Generation

Electric Power Systems' generation project experience includes:

Fort Richardson Emergency Generation

Doyon Utilities, Anchorage, Alaska

Doyon Utilities is currently completing the design and construction of a 9 MW diesel fired power plant to serve as emergency backup generation to the Fort Richardson Army base.

The 9 MW emergency power plant consists of three Caterpillar C-175 engines capable of 3.0 MW each. The engines are housed in arctic enclosures integrated into a new substation being constructed to improve service to the Army post. The arctic enclosures are designed to provide reliable service in an economic design and are the second generation arctic enclosures utilized by Doyon on generation projects in critical facilities.

The generation plant will be an unmanned facility controlled and monitored by Doyon’s operations personnel at Fort Richardson. The project includes a complete Supervisory Control and Data Acquisition system that allows operating personnel to remotely start, stop and monitor all activities within the plant and substation from Doyon’s control center.

The engines utilize Cat EMCP 3.3 unit controllers and Woodward governors and can automatically start and synchronize to an energized 12.47 kV distribution system or restore power in the event of a service interruption by the normal power supplier. The use of the CAT ECMP controller and ancillary meters and relays allows Doyon personnel to remotely monitor all aspects of the engine and generator operation remotely and dispatch personnel to the site immediately if conditions require.

The system is designed to minimize on-site fuel storage but allow easy fuel transfer to the units in the event the facility is required to operate for extended periods of time. The project was designed by Electric Power Systems and constructed by Electric Power Constructors and Mechanical Builders.

Fort Greely Central Heat & Power Plant

Doyon Utilities, Delta Junction, Alaska

Doyon Utilities has completed the upgrade of the existing diesel fired power plant at Fort Greely, Alaska by removing three older diesel engines and replacing them with two new Caterpillar C-175 engines capable of 3.0 MW each. The emergency generation is part of a Doyon program to upgrade and modernize the electrical facilities on Fort Greely, including the construction of a new substation, over 20 miles of 24.9 kV distribution lines, several miles of 138 kV transmission lines and improvements to the fuel delivery systems and HVAC systems at the Fort Greely CHPP.

The power plant improvement project consisted of removing the existing three engines, installing two Caterpillar C-175 engines capable of 3.0 MW each, improving the plant fuel delivery system and installing a new HVAC system to support the new engines and the existing base heating boiler.

The generation plant will be a manned facility controlled and monitored by Doyon’s operations personnel at Fort Greely. Although the facility is manned, the project includes a complete Supervisory Control and Data Acquisition system that allows operating personnel to remotely start, stop and monitor all activities within the plant and substation from the plant control room.

The engines utilize Cat ECMP 3.3 unit controllers and Woodward governors and can automatically start and synchronize to an energized 24.9 kV distribution system or restore power in the event of a service interruption by the normal power supplier. The use of the CAT ECMP controller and ancillary meters and relays allows Doyon personnel to remotely monitor all aspects of the engine and generator operation remotely and respond to changes in operating conditions immediately.

The system utilizes the existing fuel storage system but included improvements to the fuel system to automate the fuel system transfer and increase its reliability.

The project was designed by Electric Power Systems and was constructed by Electric Power Constructors and Mechanical Builders.

All of the required operating permits for the construction and operation of the generation plant have been obtained by Doyon. The plant is fully operational.

Fort Raymond Power Plant

Seward Electric Services, Seward, Alaska

The Fort Raymond Power Plant project consisted the design, construction project management and commissioning of two 2.5 MW EMD diesel engines in a new power house building in Seward, Alaska. EPS provided the electrical and mechanical designs and commissioning and inspection services. EPC provide the electrical construction for the generation installation, relocation of the electrical ties, supply and installation of the electrical switchgear, governor and exciter tuning and commissioning. EPC provided the labor and materials for the build out of the generator bay including house power, lighting, and distribution. MBI provided the materials and labor for the installation of the engines, radiators, piping for the cooling and the fuel and lube oil systems, the day tanks and other ancillary equipment. EPC and EPS provided the commissioning and testing services and coordinated the plant start-up.

Humpback Creek Power Plant Fire Rebuild

Cordova Electric Cooperative, Cordova, Alaska

Humpback Creek is a remote plant connected electrically to the Cordova Electric Cooperative system. The plant has over 100’ of head, and three units, with a plant capacity of over 1 MW. The plant had a fire in late 2005, with significant damage resulting from the heat, flames, and smoke. Engineered Solutions Group, Inc. (ESG) was hired by the owner to design, procure, and reconstruct the plant. The project scope included electrical design and construction, general building construction, hydraulic system design and construction, and control/communications design and construction. ESG personnel performed all of the work on the project. The design was completed and a conformed set of drawings provided to the owner. The construction was bid and performed under a separate construction contract based on the conformed set of drawings. The owner is pleased with the work, and ESG is in negotiations for additional work at the forebay with the owner following the completion of the power plant rebuild.

Main Generator Relay Upgrades

Alyeska Pipeline Service Company, Valdez, Alaska

In order to more reliably operate the power production facility at the Valdez Marine Facility, Alyeska Pipeline Service Company (APSC) decided to upgrade and install new microprocessor-based protective relays in the three main turbine generators at the Valdez Marine Terminal power plant. Electric Power Systems (EPS) acted as the design resource and Electric Power Constructors (EPC) as the contractor to perform the installation. EPS performed the overall project and construction management, as well as all of the electrical design. EPC personnel performed the installation tasks working with Alyeska personnel. The relays have been in operation since 2003 without any outages associated with the installation.

Snake River Power Plant

Nome Joint Utility System, Nome, Alaska

The Snake River Power Plant project consisted of feasibility studies, site selection, conceptual design, final design, construction, construction management and testing services and final acceptance testing for the 30 MW diesel power plant located in Nome, Alaska. The project consists of the design and installation of a 30 MW plant (12 MW installed) to serve the community of Nome, Alaska. The project includes site design, building design (25,000 sq. ft. facility), utility interconnections, SCADA/automation design, protective relaying design, switchgear design, construction and installation, coordination studies, fuel tank and fuel delivery systems design and installation and project commissioning and testing.

The project is located at a remote site on the Seward Peninsula, in Nome Alaska. Nome has no road connection to the rest of Alaska, and is served only during the summer by barge. The plant, when commissioned, will serve as the primary power source for the communities, and the surrounding area.

During the course of the project, where the Board did not receive bids that were responsive, either from a cost or capabilities perspective, they have turned to the ESG Companies to assist in the construction. Subcontract portions that have been performed by ESG Companies, include the electrical rough in (subgrade conduit), medium voltage switchgear installation, power transformer installation, all medium voltage plant work (480V through 15kV class equipment), PLC control/ SCADA installation and electrical system startup and commissioning.

Unalaska Power Plant

City of Unalaska, Unalaska, Alaska

The Unalaska Power Plant project consisted of feasibility studies, site selection, conceptual design, final design, construction and testing services and final acceptance testing for the 22 MW diesel power plant located in Unalaska, Alaska. The project consists of the design and installation of a 22 MW plant to serve the City and processors located in Unalaska, Alaska. EPS was an integral partner with the City from the conceptual design stage throughout the project, including start-up, quality control and commissioning services for the switchgear, distribution interconnection, cutover from old plant, engineer controls and plant start-up. The project is located at a remote site on the Aleutian Islands, in Unalaska, Alaska.

Kodiak Generator Replacement

Kodiak Electric Association, Kodiak, Alaska

Kodiak is an island community that is electrically isolated from any other system. The community runs predominantly on diesel and hydropower. The diesel plant, which provides the majority of the peaking and emergency energy for the community, consists of four large diesel machines. During a four month period, two of the engines experienced catastrophic failure. The project consisted of completing a design for the selection and installation of two new units, including mechanical, electrical, and civil. Following completion of the design and acceptance by the Owner, the construction phase of the project commenced with Power Builders personnel performing the civil/structural portions, the mechanical portions being contracted to CRL Services, and EPC doing the majority of the electrical installation, in conjunction with KEA personnel.

Kapaai Power Station System Studies

Kauai Island Utility Cooperative, Kauai, HI

EPS conducted a review of system disturbances on the Kauai system in an effort to improve system reliability and response of the system to transmission faults and generator trips. EPS developed a model of the KPS turbine which replicated the undesirable response to these disturbances. EPS recommended a change to the unit control system and worked with KIUC to implement the change and provide an updated model to KIUC. The change has dramatically improved the system stability and has resulted in increased reliability to KIUC customers.