Technology beginning with E

Smart Grid Technology
Click one of the letters above to go to the page of all terms beginning with that letter.
Economic Dispatch

The allocation of demand to individual generating units on line to effect the most economical production of electricity.

Electric Vehicle Charging Station

An electric vehicle charging station that uses communications technology to enable it to intelligently integrate two-way power flow enabling electric vehicle batteries to become a useful utility asset.

Electrical Energy

The generation or use of electric power by a device over a period of time, expressed in kilowatthours (kWh), megawatthours (MWh), or gigawatthours (GWh).

Electricity Storage Technologies

Technologies that can store electricity to be used at a later time. These devices require a mechanism to convert alternating current (AC) electricity into another form for storage, and then back to AC electricity. Common forms of electricity storage include batteries, flywheels, and pumped hydro. Electricity storage can provide backup power, peaking power, and ancillary services, and can store excess electricity produced by renewable energy resources when available.

Electronic Security Perimeter

The logical border surrounding a network to which Critical Cyber Assets are connected and for which access is controlled.

Element

Any electrical device with terminals that may be connected to other electrical devices such as a generator, transformer, circuit breaker, bus section, or transmission line. An element may be comprised of one or more components.

Emergency Or Bes Emergency

Any abnormal system condition that requires automatic or immediate manual action to prevent or limit the failure of transmission facilities or generation supply that could adversely affect the reliability of the Bulk Electric System.

Emergency Rating

The rating as defined by the equipment owner that specifies the level of electrical loading or output, usually expressed in megawatts (MW) or Mvar or other appropriate units, that a system, facility, or element can support, produce, or withstand for a finite period. The rating assumes acceptable loss of equipment life or other physical or safety limitations for the equipment involved.

Energy Emergency

A condition when a Load-Serving Entity has exhausted all other options and can no longer provide its customers' expected energy requirements.

Energy Management Device

A device in the customer's premise, including hardware and software, designed to control the operation of other energy devices according to customer preferences and objectives such as reducing energy costs, or maintaining comfort or convenience. Controlled devices could include, but are not limited to, thermostats, lighting, and smart appliances. Among other control inputs, an energy management device can accept energy pricing signals from a utility or third party energy services provider.

Energy Revenue

Revenue generated through the competitive energy market by buying power at low prices and selling at high prices.

Enhanced Fault Detection Technology

Enhanced fault detection technology enables higher precision and greater discrimination of fault location and type with coordinated measurement among multiple devices. For distribution applications, this technology can detect and isolate faults without full-power re-closing, reducing the frequency of through-fault currents. For transmission applications, this technology will employ high speed communications between multiple elements (e.g., stations) to protect entire regions.

Enhanced Fault Protection

Enhanced fault protection requires higher precision and greater discrimination of fault location and type with coordinated measurement among multiple devices. For distribution applications, these systems will detect and isolate faults without full-power re-closing, reducing the frequency of through-fault currents. Using high resolution sensors and fault signatures, these systems can better detect high impedance faults.

Equipment Condition Monitor

A monitoring device that automatically measures and communicates equipment characteristics that are related to the "health" and maintenance of the equipment. These characteristics can include, but are not limited to temperature, dissolved gas, and loading. These devices can automatically generate alarm signals if conditions exceed preset thresholds.

Equipment Health Sensor

Monitoring devices that automatically measure and communicate equipment characteristics that are related to the 'health' and maintenance of the equipment. These characteristics can include, but are not limited to temperature, dissolved gas, and loading. These devices can also automatically generate alarm signals if the equipment characteristics reach critical or dangerous levels.

Equipment Rating

The maximum and minimum voltage, current, frequency, real and reactive power flows on individual equipment under steady state, short-circuit and transient conditions, as permitted or assigned by the equipment owner.

Event Analysis

Tools that synthesize and analyze historical, synchronized power system parameters for the purpose of helping grid operators and engineers understand the nature of a disturbance or event.