ABBOTT LABORATORIES

• Engineer for electrical system upgrade at Abbott’s corporate headquarters and research labs in North Chicago, IL. Project involved adding 13.8 kV switchgear to the 138 kv-13.8 kV substation, which allowed for operating with a closed 13.8 kV bus tie serving the pharmaceutical complex. The Project also included changing out the main power transformers and increasing their capacity to 40 MVA each.

• Engineering design for new 4.16 kV switchgear for non-essential loads at client’s Puerto Rico manufacturing facilities. Work included the transferring of non-essential loads from three existing 4.16 kV cubicles to the new switchgear, and developing a relaying scheme for load shedding.

• Engineering, design and preparation of specifications for a 34.5-12 kV substation allowing secondary paralleling of two independent utility feeders. This application required a critical supply if power with bumpless transfer and isolation in the event either utility feeder is lost. LDP worked closely with the utility when preparing the specifications for the switchgear and protective relaying.

AMOCO OIL COMPANY

• Preparation of plans and specifications for installation of static excitation equipment to replace rotating exciters on four 12.5 MVA generators at refinery in Whiting, IN. The project also included the installation of new synchronizing equipment on plant electrical buses to correct deficiencies in existing synchronizing schemes, and to provide uniformity in relaying between the 13.8 kV in-house generation and the 138 kV utility inter-tie.

• Preparation of a power system technical manual for the Whiting refinery. Updated original design drawings; prepared system descriptions; and checked relaying, load shedding and synchronization circuits for 80 MW of steam electric generation in two plants with ten power boilers and nine steam turbine generators. Extensive refinery electrical distribution system improvements were included.

• Design of electrical power and controls associated with the installation of a 10,000 hp compressor at the Whiting Refinery. Work included routing 13.8 kV feeders, modification to existing switchgear and development of protective relay settings for the area network impacted by this large motor.

AMERICAN ELECTRIC POWER

• LDP was retained to assist Columbus Southern Power’s (CSP) engineering staff on various public and other projects that require relocation of existing CSP transmission line facilities. Assignments completed included Hilliard-Rome Road 69 kV Wood Pole Project, Dellinger Road 69 kV Wood Pole Project and Powell Road 138 kV Double Circuit Steel Pole Project.  LDP project responsibilities include field review and finalization of route; design criteria preparation; sag, tension and ruling span calculations; sag and structure template preparation; steel pole loading calculations and foundations designs; structure spotting; CAD and manual drafting; preparation of work order documents, line construction specifications, bills of material, and crossing permit drawings.

• Provided the civil and structural engineering and design for the Ohio Power Company’s Dennison Substation. This 34.5/4.16 kV substation serves Dennison University.

AMERENCIPS

• LDP was selected to perform right-of-way acquisition and related services on various 69 kV transmission line projects in the Eastern District, as identified by the client. Responsibilities included courthouse tax record and property owner title research, construction notification, transmission line easement negotiations, letter notifications, taking computations, comparable sales research and reports, post damage construction settlements, and anchor easement acquisitions.

• An additional assignment consisted of data identification and collection for input to a client developed in-house easement database. The database is used for facilities management, and computer generated mailings such as pre-construction and pre-maintenance owner notifications.

CHICAGO TRANSIT AUTHORITY (CTA)

LDP has been active in the design of a series of traction power projects for the CTA system since the early 1960's involving a total of 77 rectifier units in 31 substations. The designs have included new substations for line extensions, replacement rectifiers for both rotary and mercury arc units, new substations for yard and service improvements, rebuilding of line segments and, most recently, replacement of the first three solid state rectifiers placed in transit service at the Princeton Substation as part of a previous 1961 LDP project.

• The various projects are described in more detail beginning with the design of the Broadway Substation modernization. This installation consisted of one 3,000 kW mercury arc rectifier, rectifier transformer, and associated 12.5 kV ac and 600 V dc switchgear placed in an existing building.
• Design of new Princeton Substation, consisting of new building, three 2,500 kW silicon diode rectifiers, rectifier transformers, and associated 12.5 kV ac and 600 V dc switchgear. This project represented the first application of solid state rectification for rapid transit service.
• Design of new Harlem Substation and transportation office. Substation consisted of two 2,500 kW silicon diode rectifiers, rectifier transformers, and associated 12.5 kV ac and 600 V dc switchgear and appurtenances. Transportation office included yard and trainmen change facility and paymaster's office. --Design of Harding, 42nd Street, Illinois and Broadway modernizations. Installations included a total of three 1,500 kW, six 2,000 kW and two 2,500 kW silicon diode rectifiers and associated rectifier transformers, 12.5 kV ac and 600 V dc switchgear, and building modifications. Also included was the demolition of existing rotary converters.
• Design of three new traction power substations Hermitage, Milwaukee, and Western to replace existing 25 cycle converter substations feeding the CTA Rapid Transit System. Project included one existing building rehabilitation and two new buildings, nine 2,500 kW selfcooled silicon diode rectifier units, and associated rectifier transformers, 12.5 kV ac and 600 V dc switchgear and appurtenances. --Design for the City of Chicago of five new traction power substations 95th Street, 79th Street, Sacramento, Kedvale, and Edmunds for rapid transit extensions on the Kennedy and Dan Ryan Expressways. Project included five new buildings (one located in the berm of the expressway), fourteen 2,500 kW selfcooled silicon diode rectifier units and associated rectifier transformers, 12.5 kV ac and 600 V dc switchgear, and all substation appurtenances. Work also included power cable getaways from substations to third rails.
• Design of five new traction power substations Clifton, Noyes, Springfield, East Lake Street and Calvary for rapid transit improvement program. Project included four new buildings (East Lake Street was an existing building), thirteen 2,500 kW selfcooled silicon diode rectifier units; and associated rectifier transformers, 12.5 kV ac and 600 V dc switchgear and appurtenances. Work also included power cable getaways from substations to third rails.
• Design of East 63rd Street and Skokie Substation modernizations. Installation included one new 2500 kW silicon diode rectifier unit and associated rectifier transformer, 12.5 kV ac and 600 V dc switchgear at East 63rd Street. One new rectifier transformer and associated auxiliaries were added to serve existing 2,500 kW rectifiers located at both substations.
• Engineering and design of a traction power system for a 7.3 mile, double track extension of the Chicago Transit Authority's system to serve O'Hare Airport. This assignment included design of ductbanks, manholes, cable sizing, switches and substation interconnections. --Engineering and design of a traction power distribution system to support connection of the Howard and Dan Ryan rapid transit lines. Responsibility for the complete dc distribution system from the substation get-a-way manholes to trackside, along the right of way and throughout the 98th Street car storage yard and shop area. --Design of four substations to provide yard power for heating and cooling the cars prior to revenue service at the Linden, Kimball, Skokie and Racine yards and design of a replacement substation for Haymarket consisting of 13.8 kV ac switchgear, two 2,500 kW rectifiers and 600 V dc switchgear.
• Design of four new substations (18th, 35th, 47th and 59th Street) and rehabilitation of the Princeton, Harlem and Cottage Grove Substations. This work was performed as part of a CTA design/build contract for Gibson Electric Co. Each substation contains ac switchgear, dc switchgear and two 2500 kW rectifiers and rectifier transformers, with the exception of the Harlem Substation, which contains three.

CNF CONSTRUCTORS (FOR KENETECH WINDPOWER)

LDP provided detailed design and electrical system engineering for the West Texas Wind Plant under contract to CNF constructors, the site turn-key contractor. LDP’s areas of work included design of the 480V/34kV “Collection” system, the site 34/138kV substation, a 28-mile H frame 138kV transmission line and the 138kV switching station connecting to an existing Texas Utilities transmission line.

The Wind Plant consists of 115 wind turbines, each with 2-480V generators. The output from the wind turbines are brought together underground to pad-mount 480V/34kV transformers. The 42-padmount transformers are grouped in strings by interconnected 7 miles of 34kV underground cables. Each string terminates at a riser pole on one of the 34kV overhead lines. Nine miles of 34kV overhead lines collect the power from the various turbine strings and direct it to the site substation that consists of 34kV breakers, 45MVA 34/138kV transformer, circuit switcher and control building. The substation and interconnection switchyard are controlled by means of a SCADA system operating through a combined fiber optic/static wire system.

The power leaves the site and is connected to the grid via a 138kV H frame transmission line. The line is 28 miles in length with the first 8 miles in mountainous terrain starting at elevation 5500 and dropping to 3500. The line terminates at a 138kV interconnect switching station which has a circuit switcher and associated remote relaying and metering.

In addition to the challenges presented by the terrain, the overhead lines had to be designed for 1" of radial ice and 120 mph winds. Special design considerations were incorporated for raptor protection on the overhead portions of the project.

The project included investigation of field conditions. Expediting materials and construction support services to facilitate the accelerated construction schedule. Project documentation was custom developed in order to support a non-utility client in the construction of utility grade facilities. The documentation included T & D standards, T & D plan and profile drawings, power and communications single line diagrams, bills of material, cable schedules, bid packages, pre-bid meetings, bid evaluations, relay coordination and stringing tables. A Project Notebook was compiled containing all of the relevant engineering calculations including a transmission line comparative structure cost study.

A three dimensional digital terrain model was developed for 800’ corridor along the right of way utilizing photogrammetry with selected control points. Real time kinematic survey technology was used to establish accurate survey control in an area noted for its wilderness. The line was modeled utilizing PLSCAD including the optimized structure spotting feature. The entire 28 miles of line was constructed within nine months from award of the engineering contract.

In addition to the power portions of the project, LDP’s scope of work also included site routing of the control and communications circuits. This involved fiber optic static wire, ADSS fiber optic cable, as well a multi conductor overhead and underground telephone cables to each of the wind turbines, meteorological towers and communications/control centers.

COMMONWEALTH EDISON COMPANY

LDP performed its first substation design for the System Electrical Engineering Department in 1967, and since then has completed nearly 50 individual assignments. These include:

• Substation design including site grading, drainage, storm water detention facilities, access roads, building and equipment foundations, control and maintenance buildings, ducts, manholes and troughs for substations with the following voltage levels: 765 kV, 345 kV, 138 kV, 69 kV and 12.5 kV. Building design included heating, ventilation, drainage, water wells, plumbing and septic systems.

• SCADA modernization and replacement for sixteen substation locations.

• Design for installation of a SCADA to remotely monitor and control ATO and network protector equipment in twelve major customer vaults in the central downtown Chicago area. The SCADA units are interconnected via a fiber optic network.

• Investigate and design improvements for inter tie points to Non-Utility Generators (NUGS) and neighboring electric utilities.

• Design of 200,000 gallon electrical insulation oil storage tank facilities including railroad tank car unloading and transfer system, storage tank nitrogen blanketing system, thermal insulation and connections to existing facilities.

Substation projects have been performed at the following locations:

LDP has also assisted ComEd with

• Designs for distribution system expansions

• Over 200,000 effort-hours of self directed teams of engineers, technicians and designers to route and design overhead and underground 15 kV and 34.5 kV distribution lines in Edison’s Chicago, Northern and Western areas

• Investigation of the routings, obstructions, right-of-way, permit requirements and other items that could impact the routing or scheduling of the work plan

• Preparation of detailed plans and specifications for contractor bidding

• Right-of-way data for the ComEd Real Estate Department

• Permit applications for submittal to state and local authorities

• Coordination of line routings with other existing utility lines through the joint utility line locating service and staked duct runs indicating manhole locations

• Additional feeders from existing distribution substations

• Service to new locations or additional ducts to the present conduit system

• Public improvement relocations and replacement of danger poles

• Over 175,000 effort-hours of quality control, data entry and data base maintenance support to the CEGIS System-wide Geographic Information System (GIS)

• Preparation of an independent computerized GIS data base for utility systems at Chicago’s O’Hare Airport allowing the Airport Authority and Commonwealth Edison to mutually transfer active data related to both developing and existing facilities during a period of rapid change at the O’Hare Airport site.

CPC INTERNATIONAL – CORN PRODUCTS DIVISION

• Design of 12.5 kV electrical distribution system expansion for the Argo, IL plant including one additional utility tie, a new lineup of vacuum switchgear, bus tie reactors, generator neutral resistor and provisions for additional plant feeders. The project involved redistributing the utility and in-house generation feeders among the two existing buses and the new bus, as well as design of a modern synchronizing scheme and complete new electrical control console.

• Design of electrical system expansion to support conversion of the Pekin, IL Plant to an alcohol production facility. The work included installation of additional switchgear, modernization of protective relaying schemes and retirement of antiquated equipment.

THE DAYTON POWER AND LIGHT COMPANY

• LDP designed a rebuild of the 69kV tap serving the Kings Creek substation on the Logan – Kings Creek – Urbana line. The project included development of plan and profile drawings, bills of material and a construction specification.

• A second and third assignment involved re-conductoring both the 69kV and 12.5kV portions of a twelve mile line between the Gettysburg Substation to Covington Substation. The project that was designed and constructed in two phases included a survey of the route to establish existing profiles. Due to the increased conductor size on both the primary and secondary, all of the existing poles were replaced and the line was re-spanned. Plan and profile drawings were prepared, material lists were tabulated and construction specifications were developed.

• Engineering and preparation of construction drawings for the replacement or addition of sixteen 138kV and 69kV group operated switches located throughout DP&L’s system. The switch operators and controls ranged from manual isolation or throwover switches to fully automated SCADA controlled and monitored switches.

FLORIDA CRUSHED STONE CO.

• Detailed design of an outdoor 115-69-13.8 kV low profile switchyard within the confines of an irregularly shaped site. Work performed as part of an LDP assignment to design a 165 MW capability cogeneration plant, utilizing used equipment, in Brooksville, FL. Refurbished power transformers (circa 1950) and generator isolated phase bus ducts were integrated into modern switchyard design format. Switchyard controls and relaying scheme were designed to permit operation either locally from switchyard control building or remotely from cogeneration plant via the distributed control systems (DCS) data highway.

G.D. SEARLE & COMPANY

• Engineering and design for a project to replace a single 4 kV utility feeder with two independent 34 kV feeders and to modernize the existing 4 kV internal distribution system at Searle’s R & D lab in Skokie, IL. Project included new on-site step-down substation with breakers, transformers, and new 4 kV switchgear with special relaying to allow a closed secondary tie. LDP’s scope also included modeling Searle’s expected future loads to establish the basis for sizing the new feeders and distribution system. Due to the closed tie, the protective relaying had to be closely coordinated with Commonwealth Edison, the local utility. Work was performed while Searle’s facility remained in operation.

• The new feeder system is designed for high reliability. The utility company provided two independent 34.5 kV feeders, each independently capable of serving Searle’s full load. Redundancy is also provided on Searle’s side of the delivery point with two segmented dual feed switchgears, four 34kV SF6 fused disconnects, and four 7.5 MVA 34.5-4 kV step-down transformers. Each utility arrangement requires more sophisticated protective relaying than isolated utility feeders but it provides for uninterrupted switching utility system disturbances.

• Distribution system work included replacement of all underground lead covered 4 kV cables to various buildings with EPR insulated cables. The work also entailed upgrading or replacing undersized 4 kV – 480 volt substations for the various buildings and installing new manholes and underground duct banks to connect the existing distribution system with the new 34.5 kV switchyard.

INDIANAPOLIS POWER AND LIGHT COMPANY (AES)

• LDP provided the engineering and design services required for the Southport Substation-Edgewood Substation 138 kV Transmission Line and the Edgewood Substation-South Substation; 138 kV Transmission line projects. The structures are wood and steel poles.

• LDP services included reroute and P.I. selection, anchor easement acquisition, sag/tension and ruling span calculations, structure spotting, guying and pole class calculation, steel pole specifications and foundation design, CAD drawing preparation, bills of material, permit drawings, work order preparation, line construction specifications, survey, soil borings and laboratory analysis work, and inventory and transfer of existing distribution facilities, as appropriate.

• A second assignment involved design and analysis for replacing the static wire on the existing 345/138 kV transmission loop around Indianapolis with a fiber optic communication loop.

• LDP performed an emergency rating high temperature analysis on an existing 138kV transmission line segment utilizing Autosag, LDP’s proprietary computer program that allows alternative sag analysis of existing manually drawn transmission lines. This process eliminates the need to scan the existing line’s terrain information into the computer model by using an overlay of the existing line attachment points. The study confirmed the feasibility of high temperature operation and identified the limited number of structures requiring an additional extension section.

KOPPERS INDUSTRIES, INC.

• Electrical design for interconnection of a 6 MW waste heat powered cogeneration system with the Commonwealth Edison system at the Koppers facility in Cicero, IL. LDP scope included electrical single line diagrams, protective relaying scheme, and cost estimate for the instrumentation and electrical components necessary to tie the generator to Koppers existing 4kV distribution system and two 34kV utility feeders.

MADISON GAS AND ELECTRIC COMPANY

• Detailed engineering and design for the Blount Substation Addition. The existing Blount Switchyard provided MGE’s tie between their Blount Generating Station and their transmission system. Distribution connections to customer network and radial load centers were derived from auxiliary bus connections at the generating station. The LDP designed expansion to the substation involved the addition of one new 37MVA 69-13.8kV transformer, one 69kV GCB and two new line-ups of 13.8kV switchgear enclosed in a new control building. The project also included all of the foundations, duct banks and bus ties to add a second 69-13.8kV transformer for greater reliability in the future. This substation is located in downtown Madison, WI and special attention was placed on the aesthetics associated with the control building and site finishes.

• A second LDP designed project involved the Pflaum Substation Expansion for MGE. This substation design assignment involved the addition of a second incoming 69kV feeder, bus tie and 37MVA 69-13.8kV transformer to an existing single 69-4.16kV transformer on a radial 69kV tap. The new design will utilize two relocated 69kV OCBs and a new lineup of 13.8kV outdoor metal enclosed switchgear. The 69kV bus and breaker portions of the expanded substation will be owned by American Transmission Company and the design of the relay protection scheme as well as the physical aspects of the bus layout all had to be reviewed and approved by the new transmission company as well as MGE. Both of these projects were completed under a multi-year General Engineering Services Agreement between LDP and MGE.

MASSACHUSETTS BAY TRANSIT AUTHORITY (MBTA)

Prime consultant and chief design engineer for a multiyear contract involving complete modernization of urban rapid transit power supply network on a stepbystep basis to keep the system in operation during changeover from the MBTA's obsolete 25 Hz supplied generation (in combination with utility supply thru a 45 year old 60 to 25 Hz frequency converter) to a 100% purchase power arrangement at 60 Hz. Phaseout of the existing 25 Hz generation included rehabilitation of two existing power stations to keep deteriorated facilities in operation and installation of a 30 MW combustion turbine (25 Hz, convertible to 60 Hz) to insure reliability of the interim power supply.

• Engineering design and specifications for the purchase of equipment and construction of fifteen new silicon rectifier substations to replace twentythree existing rotary converter and mercury arc rectifier substations, and two new 13.8 kV ac switching stations to provide purchase power to the underground distribution network serving these stations. The new substations consisted of thirteen new buildings and two rehabilitated buildings and included a total of four 2,000 kW and thirtyone 3,000 kW silicon diode rectifiers, rectifier transformers, and associated 13.8 kV ac and 650 V dc switchgear and appurtenances. Phasein of the new substations required complex cutover procedures.
• Design/engineering services for modernization of Dewey Substation. Project included the installation of two 3,000 kW silicon diode rectifiers and associated switchgear to replace existing rotary converters in a sub surface substation located above rapid transit tracks. Extensive structural modifications were required to accommodate the new equipment.
• Computer modeling and analysis of traction power system with recommendations for upgrade and engineering/design services for new and modified substations, new and rerouted dc/ac cable and duct systems, including track sectionalizing, and new connections to outside electric utilities and the Authority's central cable system.
• Preparation of plans and specifications for ten construction contracts associated with the MBTA's Green Line Traction Power Upgrade Project. Responsibilities included the redesign of traction power sectionalizing systems for the Central Subway and Lechmere Branch, the installation of additional dc feeders and supplementary cable for all five Green Line branches, and the overall supervision of design efforts by subconsultants for catenary system improvements throughout the line. Numerous field surveys were made to properly, and cost effectively, integrate these modifications into the existing power distribution system.
• Engineering design and specifications for the purchase of equipment and installation of four new rectifier substations to meet the increased service requirements of the Green Line. One of these substations was designed to fit completely within the confines of an existing subway tunnel area, while two others were designed with compact equipment arrangements to permit installation on narrow sites adjacent to the transit system rightofway. Project included a total of four 2,000 kW and two 3,000 kW silicon rectifiers, rectifier transformers, and associated 13.8 kV ac and 650 V dc switchgear and appurtenances.

METROPOLITAN ATLANTA RAPID TRANSIT AUTHORITY (MARTA)

METROPOLITAN WATER RECLAMATION DISTRICT OF GREATER CHICAGO

• Engineering and design for replacement of two 12 kV underground electrical services at the Calumet Sewage Treatment Works. The project included 6,600 feet of underground duct and 20 manholes.

• Study of the entire West-Southwest Sewage Treatment Plant steam and electrical system to determine future course of action to pursue with regard to self-generation, purchase power, turbine auxiliary drives and replacement motor driven auxiliaries. The study required a complete inventory of existing equipment, providing as assessment of service condition, useful life, efficiency and capacity.

• Preparation of specifications for the purchase of electric drives and auxiliary systems to replace steam turbine drives at the West-Southwest Sewage Treatment Plant. The equipment included four 10,000 hp induction motors for blowers and four low speed (180 RPM) synchronous motors for existing sewage pumps. Following the purchase of pumps and other major electrical equipment, LDP prepared complete installation plans and specifications for all equipment including switchgear, motor control centers, panels, motor drives, cables, controls and a multiplexing supervisory interface with the existing plant control room.

• Detailed engineering and design of a hydroelectric power plant modernization at the Lockport Dam. This project involved replacement of all switchgear, a new 15 MVA substation interconnecting to two 34.5 kV utility lines, and new protective relaying of the two generators and utility inter-tie. The project also included the addition of a distributed control system allowing full operation of the hydroelectric plant and flood control gates from a remote central control room thirty miles from the site.

MIAMI VALLEY (OHIO) REGIONAL TRANSIT AUTHORITY

LDP was selected to provide design services to modernize the Trolley Bus Power Supply.  This included the preparation of trolley bus system analysis, conceptual design, and development of construction plans and specifications. Project included seven new traction power substations, expansion of one existing substation, modernization of garage dc switchgear, and distribution system upgrading. Installations included a total of four 1,500 kW and six 750 kW silicon diode rectifiers with associated rectifier transformers and switchgear.

The Scope of Work also entailed design of a complete trolley bus power supervisory control and data acquisition (SCADA) system from which the dispatcher can monitor and remotely control the both the ac and dc breakers at each of the eight substations as well as the traction power within the bus garage. The SCADA systems utilizes a series of leased lines to interconnect the master terminal with the remote terminal units.

MORGAN GUARANTY TRUST COMPANY

• Engineering and detailed design for several projects to upgrade electric supply to critical computer operations at the Morgan owned 60 Wall Street building in New York City. Primary disconnect switches were added to existing 13.8 kV feeders to establish a clear electrical interface between Morgan and the local utility, Consolidated Edison. Previously the interface was not clear, which created operation and equipment safety problems. LDP’s scope included coordination with the utility and performance of short circuit analysis and other interconnection related evaluations. Additional capability was also added to Morgan’s existing auto-transfer UPS bypass switch system.

NIAGARA MOHAWK POWER CORPORATION

• The initial assignment under an Open Services Agreement involved staff support for NMPC’s Western Region. The work consisted of assistance in estimating, planning and data entry associated with the preparation of the five-year transmission and substation portions of the capital budget.

NAPERVILLE PUBLIC UTILITIES

• Design of the 34.5 – 13.8kV Washington Street Electric Substation. The design of this substation included indoor 13.8 and 34.5 kV SF6 metal-clad switchgear. The transformers were located in an architecturally treated enclosed area so that they are not visible from the street. The site is located in a particularly sensitive area along the gateway to the historical downtown and adjacent to the City’s Riverwalk along the scenic DuPage River.

NORTHERN INDIANA COMMUTER TRANSPORTATION DISTRICT

Prime consultant for preliminary engineering phase of project to modernize passenger operations on the CSSSB Railroad, including purchasing of new rolling stock, trackwork improvements, refurbishing maintenance facilities, upgrading passenger terminal facilities and replacement of the 1,500 V dc traction power supply system. Responsibilities included coordinating the work efforts of project subconsultants and providing engineering and design services for the traction power system. This work involved load and voltage studies of the existing power supply and distribution system for current and future ridership with recommended modifications thereto; preparing specifications for purchasing new traction power equipment consisting of nine 2,000 kW, 1,500 V dc rectifiers, one 4,000 kW, 1,500 V dc rectifier, ten rectifier transformers, associated ac and dc switchgear, and supervisory (SCADA) system.

LDP acted as traction power consultant to provide final engineering, design and specifications for installation of the new traction power equipment and supervisory control system described above in six existing and one new substation building, including installation of new traction power feeder cables along 26 miles of rightofway. At the six existing substations, LDP provided engineering services to assist the local electric utility in redesigning and isolating the incoming 34.5 kV feeders from the utility ac distribution substations which had previously been jointly operated.

The overall project included specifying and graphic design for a new supervisory and control system to replace the existing Train Control Board. The Train Dispatcher can operate and monitor the conditions at all of the substations from the CRT based master control station located at the railroad's main yard in Michigan City , In.

Consultant for the preparation of specifications to purchase traction power equipment for the rehabilitation of the three additional substations between Michigan City and South Bend, In. This final phase of the project included engineering, design and preparation of plans and specifications for the installation of the equipment and modifications to the incoming 34.5 kV substation feeders. Project included the installation of three 2,000 kW silicon diode rectifiers, rectifier transformers and associated dc switchgear.

NORTHERN INDIANA PUBLIC SERVICE COMPANY

• Design of new 12.5 kV electric distribution system for the City of Gary, IN. The project included a complete new underground duct system for the entire downtown area including new manholes, cable and switchgear vaults. The new system replaced an obsolete 13.8 kV-480 V loop system, and involved removal of PCB contaminated transformers and abandonment or demolition of transformer vaults.

• Conversion of Gary’s outlying overhead system for 4 kV to 12.5 kV was included as an adjunct to the downtown underground project. To provide continuity of service during the conversion, critical planning and staging of the overall project was required with design and construction completed in three basic phases.

O'HARE AIRPORT/DIVINE BROS. ELECTRIC CO.

LDP investigated the causes for the detection of dc traction voltage on the 480 V ac heating circuits on the People Mover at O'Hare Airport in Chicago. The system utilizes heat tracing along the right of way to melt snow and ice which forms on the negative rail and positive guideway as well as on the pathway over which the rubber tired vehicles travel. These heater circuits employ a dc voltage detection circuit to protect equipment and personnel from the possibility of coming into contact with the traction power voltage. The alarm circuits were activating during the summer months when the heater circuits were out of service.

LDP determined that the alarms were being activated by induced voltages and recommended the addition of discharge circuits to dissipate the induced voltage before it could reach a level to activate the alarm circuit.

PEABODY, MA (CITY OF)

• LDP performed an economic and technical evaluation of the reliability and cost for interconnection of the municipal system with the area power pool. The analysis included expansion of Peabody’s 115 kV utility interconnection with the New England Power Pool (NEPOOL). The follow-on design by LDP consisted of two new 115 kV-23 kV substations with three high voltage tie lines, circuit switches, 23 kV low profile structure, and transmission lines including switching stations, metering, control and system-wide protective relaying.

• Later, 23 kV circuit breakers were added for additional transmission capability in the previously designed substations. This project also required the addition of associated bus differential relay scheme at two switching stations and replacement of existing oil circuit breakers at one 23 kV switching station.

• As part of a recent LDP project for the addition of a 35 MW combustion turbine generator (LM 5000) project at the Waters River Substation, the substation was expanded to include a 13.8-115 kV step-up transformer, 115 kV circuit switchers and bus work to permit interconnection of the turbine unit to either of the two transmission lines serving the substation.

PHELPS DODGE CORPORATION

• Engineering, design and equipment purchase for 46 kV-230 kV step-up substation to interconnect the Phelps Dodge copper production complex in Morenci, AZ with the Arizona Electric Power Cooperative transmission system. The Phelps Dodge system was previously isolated from the area utility. LDP designed and specified the complete relaying and control system, and detailed the substation structures and cabling.

• Engineering, planning, design, purchasing, and resident engineering during construction of an extensive 46 kV transmission system associated with an expansion of the Morenci complex. Transmission system interconnected a new LDP designed 60 MW power plant with new concentrator and mine facilities and existing smelter and power plant. Transmission system included new 46 kV substations, as well as new breakers, switchgear and feeders for expansion of an existing substation.

• Development of a site utility model to determine load flow, short circuit duties and relay settings for the 230kV, 46kV and 13.8kV portions of a 270 MVA mine power system. Studies were performed to assess the future processing and load growth capability to support a total of 500MVA load. Recommendations included the addition of an independent 345 kV inter-tie, additional 345 – 230 kV and 230 – 46kV transformation capacity.

• Design for replacement of 2 - 230kV circuit switchers with SF6 circuit breakers to achieve acceptable levels of short circuit interrupting duty for the incoming 100 MVA transformers

• Design of 46 kV mine power system for three independent major mine expansion projects including the addition of ten new substations, two switching stations along with both new lines and capacity improvements to existing lines for a total connected capability of 400MVA.

PHILADELPHIA, CITY OF - DEPT. OF PUBLIC PROPERTY

Complete traction power system design for the high speed line commuter link between Philadelphia International Airport and 30th Street Station. The Project included one new substation and seven miles of double track catenary with new catenary support structures and wirework. Initial system operation utilized 11 kV, 25 Hertz power with future operational capability at 25 kV, 60 Hertz. Most of the system consisted of constant tension, simple catenary, with certain sections of fixed wire design.

RIVERBAY CORP. (CO-OP, THE BRONX)

• Engineering and design to upgrade existing electric utility feeders at Coop City, the largest housing project in New York City. LDP scope includes addition of protective relaying and other feeder improvements to allow an existing 6.3 MW on-site steam turbine generator to operate in parallel with the local utility, Consolidated Edison, rather than in an isolated mode. LDP also performed an evaluation of the feasibility to increase the interconnection capacity for additional on-site generation. Total on-site load is 28 MW.

• As part of ongoing engineering services to upgrade on-site power distribution facilities, LDP investigated spurious tripping of main power feeder and ring bus breakers in central power plant.

SADELMI (ASEA BROWN BOVERI)

• Engineering and design services for two 66 kV substations for waste water treatment facilities in Egypt. Scope of services included preparation of general arrangement plans, three line diagrams and control schematics, interconnection diagrams, cable schedules and bulk material take-off for cables, conduits, cable trays and structures. Design included the 66 kV bus work and electrical inter-ties along with fault current and relay coordination studies.

S & C ELECTRIC COMPANY

• Engineer and specify the installation of more than 80 “SCADAMATE” 34kV switches associated with a turnkey project for a Midwestern utility. LDP’s work included field investigation, preparation of work orders, development of material lists, as well as, providing coordination and support to the contractor installing the switches.

• Engineering and design support for multiple substation improvement and relay upgrade projects for three Southeastern utility systems. Projects have included addition of line and transformer positions to existing substations, capacitor banks at both transmission and distribution voltage levels, SCADA implementation, rebuilding complete substations, breaker change-outs, transfer trip schemes with associated communications ties and adding electronic protective relay packages to substations ranging in voltage from 12.5, 24, 34, 44 and 115 kV.

• Detailed engineering and design for two transmission line projects in the southeastern portion of the US. Both projects involved rebuilding 100kV lines within their existing right of way. One line, a 16-mile double circuit line, utilized a combination of new tubular steel poles, light duty steel poles, and new lattice towers along with reutilization of selected lattice towers. The second line consisted of rebuilding a single, circuit 6 mile, H-frame Transco tap with light duty steel poles. Both lines were modeled and analyzed in PLS CAD.

UNITED STATES NAVY (GREAT LAKES NAVAL TRAINING CENTER)

• Design of new 34 kV primary and 4 kV secondary distribution system in Forrestal Village at the training center in North Chicago, IL. Also, a survey of overall training center distribution system with recommendations for modifications and improvements, as well as the design for replacement switchgear at the power plant was performed.

VETERANS ADMINISTRATION

• Electrical engineering for distribution system at the Lakeside Medical Center in Chicago, IL. Surveyed the primary and secondary electrical distribution systems, updated electrical single line diagrams, develop relay coordination curves, and identified system deficiencies or areas of non-compliance with National Electric Codes. The study, which required extensive field verification of existing conditions, presented recommendations, which enhanced both the safety and reliability of the critical and non-critical electrical services.

• Electrical distribution engineering for the Medical Center in North Chicago, IL. Survey of the primary, secondary and critical electrical services to determine existing conditions and required improvements. The study recommended replacement of primary feeders and switchgear with new cable and equipment having adequate rating for present and anticipated loads at the facility. Also surveyed and made recommendations on methods for improving system power factor, and performed engineering and design for replacement of street lighting system for the entire complex.

WASHINGTON METROPOLITAN AREA TRANSIT AUTHORITY

LDP was contracted to develop the detailed design for the traction power and emergency trip portions of the Green Line extension project. This expansion included eight new 6,000 kW traction power substations and seven tie stations. The project, which was completed in two separate phases, included preparation of plans and equipment furnish/install specification, and review of all contractor submittals. Each of the mainline substations and tie stations is designed for complete unattended remote operation via a supervisory control and data acquisition (SCADA) system. The substations and tie station located within the Greenbelt Yard and Shop area were interconnected to the yard control tower via a series of fiber optic links for complete remote control and monitoring of the traction power system up to the interconnection to the mainline.

WISCONSIN ELECTRIC POWER COMPANY

• The initial design assignment under a multi-year General Engineering Services Agreement with WE involved the installation of eleven (11) capacitor banks at ten (10) different substations located in the southern portion of the utility’s system. In addition to the capacitor banks, the installations also included the addition of new outdoor breakers, breaker control panels and connection to the SCADA system at nine locations. At the two other locations, the capacitor banks were served from existing metal-clad switchgear. The capacitor banks were placed at the distribution voltage level and included substations with 34.5kV, 26.4kV and 24.9kV secondary voltages.

WISCONSIN TISSUE MILLS

• Feasibility study for a new 138 kV substation to serve a paper mill in Menasha, WI. LDP scope included development of a recommended substation single line diagram for the present electrical loads and identification of additional equipment or modifications necessary to serve a 25 MVA expansion of the system. Scope also included cost estimates for major substation equipment, cable, underground duct, foundations, installation and site work, as well as an analysis of cost of service at 138 kV and 4 kV from competing electric utilities.

Laramore, Douglass and Popham Consulting Engineers

c LDP Group, 2003

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