Glossary by "F"
The maximum or minimum voltage, current, frequency, or real or reactive power flow through a facility that does not violate the applicable equipment rating of any equipment comprising the facility.
Fast area regulationSee: Fast frequency regulationSource: ESA Technical Working Group
Fast frequency regulation
A fast version of area regulation. Ideally fast frequency response resources can respond robustly to the ACE signal, thus output changes every few seconds.Source: ESA Technical Working Group
An event or condition occurring on an electric system such as a short circuit, a broken wire, or an intermittent connection.
When an excessive amount of current flows in an uncontrolled manner through the electrical system.Source: U.S. Department of Energy (DOE)
Federal Energy Management ProgramAcronym(s): FEMP
U.S. Department of Energy - Office of Energy Efficiency and Renewable Energy - Federal Energy Management Program (U.S. DOE-FEMP) The program assists federal government agencies to reduce energy use and cost, increase energy efficiency, use renewable energy, and conserve water. FEMP’s three primary areas of concentration are project financing, technical assistance, and planning, reporting, and evaluation.Source: ESA Technical Working Group
Federal Energy Regulatory CommissionAcronym(s): FERC
FERC is an independent agency regulating the interstate transmission of electricity, natural gas and oil, and responsible for maintaining system reliability, ensuring electricity is transmitted in an unbiased manner, and establishing the price of ancillary services necessary for reliable system operation.
An electrical wire/circuit which “feeds” energy to the next lower level of distribution. A feeder may be an underground or an overhead wire.Source: ESA Technical Working Group
That portion of the Demand that a power supplier is obligated to provide except when system reliability is threatened or during emergency conditions.
Firm transmission service
The highest quality (priority) service offered to customers under a filed rate schedule that anticipates no planned interruption.
A cost or expense incurred without regard to whether or how much a respective service, facility or equipment is used (i.e., unlike variable costs; fixed costs are incurred irrespective of how much the service, facility or equipment is used).Source: ESA Technical Working Group
An electrical discharge through air around or over the surface of insulation, between objects of different potential, caused by placing a voltage across the air space that results in the ionization of the air space.
Robust responses to changing needs and opportunities that are enabled by use of a device or technique that is adaptable, versatile and, in some cases, transportable.Source: ESA Technical Working Group
Flexible alternating current (ac) transmission systemAcronym(s): FACTS
FACTS enables control of power flow on ac transmission lines and to optimize utilization of existing transmission facilities by allowing operation at or near equipment’s thermal operating limits without sacrificing reliability. Core FACTS technologies are thyristors though FACTS also incorporates sophisticated controls, communication and monitoring devices and computer algorithms.Source: ESA Technical Working Group
Generating capacity whose output can be varied as needed. Flexible generation is said to be dispatchable.Source: ESA Technical Working Group
For electrochemical batteries; recharging during which batteries are connected to a constant-voltage supply that maintains the cell in fully charged condition.Source: ESA Technical Working Group
Florida Reliability Coordinating CouncilAcronym(s): FRCC
A not-for-profit corporation in the state of Florida whose mission is to ensure that the bulk power system in Peninsular Florida is reliable, adequate and secure. The FRCC serves as a regional entities with delegated authority from the North American Electric Reliability Corporation (NERC) for the purpose of proposing and enforcing reliability standards within the FRCC Region. See also regional entities.
The amount of area required for the storage system.Source: ESA Technical Working Group
1. The removal from service availability of a generating unit, transmission line, or other facility for emergency reasons. 2. The condition in which the equipment is unavailable due to unanticipated failure.
A value, usually expressed in megawatts per 0.1 Hertz (MW/0.1 Hz), associated with a balancing authority area (BAA) that approximates the BAA
A change in Interconnection frequency.
The difference between the actual and scheduled frequency.
(Equipment) The ability of a system or elements of the system to react or respond to a change in system frequency. (System) The sum of the change in demand, plus the change in generation, divided by the change in frequency, expressed in megawatts per 0.1 Hertz (MW/0.1 Hz).