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Generating units performances: power system requirements

Abstract

The part of generating units within the power system is more than providing power and energy. Their performance are not only measured by their energy efficiency and availability. Namely, there is a strong interaction between the generating units and the power system. The units are essential components of the system: for a given load profile the frequency variation follows directly from the behaviour of the units and their ability to adapt their power output. In the same way, the voltage at the units terminals are the key points to which the voltage profile at each node of the network is linked through the active and especially the reactive power flows. Therefore, the customer will experience the frequency and voltage variations induced by the units behaviour. Moreover, in case of adverse conditions, if the units do not operate as well as expected or trip, a portion of the system, may be the whole system, may collapse. The limitation of the performance of a unit has two kinds of consequences. Firstly, it may result in an increased amount of not supplied energy or loss of load probability: for example if the primary reserve is not sufficient, a generator tripping may lead to  More>>
Publication Date:
Aug 01, 1994
Product Type:
Technical Report
Report Number:
EDF-95-NR-00022
Reference Number:
SCA: 240100; PA: FRC-96:002079; EDB-97:007266; SN: 96001699157
Resource Relation:
Other Information: PBD: Aug 1994
Subject:
24 POWER TRANSMISSION AND DISTRIBUTION; POWER DISTRIBUTION SYSTEMS; ELECTRIC POWER; POWER GENERATION; LOAD MANAGEMENT; FREQUENCY CONTROL; VOLTAGE REGULATORS; ENERGY LOSSES
OSTI ID:
406107
Research Organizations:
Electricite de France (EDF), 92 - Clamart (France)
Country of Origin:
France
Language:
French
Other Identifying Numbers:
Other: ON: DE97716106; TRN: FR9602079
Availability:
OSTI as DE97716106
Submitting Site:
FR
Size:
20 p.
Announcement Date:

Citation Formats

Fourment, C, Girard, N, and Lefebvre, H. Generating units performances: power system requirements. France: N. p., 1994. Web.
Fourment, C, Girard, N, & Lefebvre, H. Generating units performances: power system requirements. France.
Fourment, C, Girard, N, and Lefebvre, H. 1994. "Generating units performances: power system requirements." France.
@misc{etde_406107,
title = {Generating units performances: power system requirements}
author = {Fourment, C, Girard, N, and Lefebvre, H}
abstractNote = {The part of generating units within the power system is more than providing power and energy. Their performance are not only measured by their energy efficiency and availability. Namely, there is a strong interaction between the generating units and the power system. The units are essential components of the system: for a given load profile the frequency variation follows directly from the behaviour of the units and their ability to adapt their power output. In the same way, the voltage at the units terminals are the key points to which the voltage profile at each node of the network is linked through the active and especially the reactive power flows. Therefore, the customer will experience the frequency and voltage variations induced by the units behaviour. Moreover, in case of adverse conditions, if the units do not operate as well as expected or trip, a portion of the system, may be the whole system, may collapse. The limitation of the performance of a unit has two kinds of consequences. Firstly, it may result in an increased amount of not supplied energy or loss of load probability: for example if the primary reserve is not sufficient, a generator tripping may lead to an abnormal frequency deviation, and load may have to be shed to restore the balance. Secondly, the limitation of a unit performance results in an economic over-cost for the system: for instance, if not enough `cheap` units are able to load-following, other units with higher operating costs have to be started up. We would like to stress the interest for the operators and design teams of the units on the one hand, and the operators and design teams of the system on the other hand, of dialog and information exchange, in operation but also at the conception stage, in order to find a satisfactory compromise between the system requirements and the consequences for the generating units. (authors). 11 refs., 4 figs.}
place = {France}
year = {1994}
month = {Aug}
}