POWER SYSTEMS

Power System Studies is an integral ECF service offered to assist clients in the assessment of infrastructure planning and operation. With an experienced professional staff, ECF is able to provide knowledgeable, in-depth analyses of complex local and regional issues related to the electrical grid and its technical requirements.

The design and function of the electric transmission system in this country is being transformed into a much broader concept of use and access. As Smart Grid understanding and deployments continue, with Smart devices playing a larger role in safe and reliable operation, ECF is prepared and able to respond. As these changes take place, timely planning and thoughtful system assessment will play a key role in managing the transition. It will also help to maintain the high standard of reliability expected from the electrical system. In order to maintain exceptional reliability and improve access to competitive power sources, decision-makers must have accurate information about how best to operate and upgrade the regional transmission and distribution networks. ECF expertise can help accomplish this objective.

ECF performs transmission and distribution system planning analyses and system impact studies for a variety of customers including large investor-owned utilities, merchant power plant developers and independent system operators.

 

Examples of Power System Studies experience includes:

• Generation System Impact Studies
• System Expansion Studies
• System Modeling and Analysis
• Power Systems Studies and Fuse Coordination
• Transmission System Operating Studies
• 115 kV Capacitor Bank Switching Studies

With a comprehensive history of experience in this industry, the growing need for proven expertise in the field, and a thorough understanding of the complexities in the utility industry, ECF is an established partner in this field. ECF specializes in system planning work in the areas of steady state, stability and transient switching analyses.   

Other study expertise offered includes:

• Power Systems Computer Modeling
• Power Flow & Stability Studies
• Short-Circuit Fault Analyses
• Motor Start Analyses 
• Detailed Loss Analyses
• Reactive Compensation Analysis
• Harmonics Analyses
• Generation & Emergency Generation Analyses
• Power Management System Studies
• Evaluation of Power Supply Alternatives
• Transmission Line Protection & Coordination
• Substation Bus & Transformer Protection
• Generation Plant Internal/Intertie Protection & Coordination
• Field Surveys of Electrical Facilities
• Insulation Coordination
• Grounding Analyses
• Switching Surge Studies
• EMF Analyses & Measurements
• Cable Sizing
• Voltage Drop Studies

ECF personnel are competent and knowledgeable users of PSS/E, PSLF, ASPEN, and ATP software analysis tools for system planning studies.
 

Project Highlights

 

Develop a conceptual design for several interconnection options and performed a lifecycle cost analysis which includes all initial and future capital expenditures, plus all appropriate operating costs required to develop and maintain an operational facility.

Transmission System Study  - Anza

Prepared a Specification for a Prefabricated Distribution Relay Vault and reviewed associated drawings prepared by FPL. This was a permanent prefab relay vault that will be a similar size to the building previously developed by FPL for its Roberts/Magnolia Transmission Substations, but for the distribution station. Additionally, ECF put together a spreadsheet for use when ordering the building to support the specification by defining who would be providing what items, including how they will be delivered.

Distribution Relay Vault Design  - FPL
St. Lucie Power Plant, Florida  - FPL, FL

Managed structural/conditional assessment and design, where necessary, to bring the switchyard steel structures and foundations at the coastal nuclear power plant to code. Current code requirements include, among other criteria, a top wind speed of 150 mph and consideration of corrosion rates.

Developed several modifications to HES Power System to accommodate a new 138 kV interconnection between Florida Power & Light Co. (FPL) and HES Networks. Final recommendation was a new intertie by looping the FPL Davis to Florida City #2 138 kV Line and HES Lucy 138 kV Line at the new HES Redland Distribution Substation site.

Interconnection Study  - HES
Falls Park & Churchtown: Settings/Modeling for configuration settings & fault study  - NYSEG

ASPEN modelling of the system in order to provide coordination studies, configuration settings, and settings basis for GE & SEL protection relays. Developed HMI interfaces & data maps between HMI equipment, RTAC, IED relays, meters, etc. Developed communications and modem & Ethernet setups as well. Performed field FAT tests and designed the FAT procedures.

Relay Coordination Study and modelling, including generator facilities and 132kV and 33kV transmission lines. Reaffirm generator protection & dynamic load modeling.

Bahamas Power & Light - BPL

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