Power system computer controlled load shedding

被引:4
作者
Moya, O
机构
[1] Department of Electrical Engineering, University of Chile, Santiago
关键词
load shedding; emergency control; computer control; frequency relaying; generation deficit;
D O I
10.1016/S0378-7796(96)01053-X
中图分类号
TM [电工技术]; TN [电子技术、通信技术];
学科分类号
0808 ; 0809 ;
摘要
System conditions leading to power deficits and their identification are analyzed and the methods for load-shedding calculations are presented. Different criteria on which to base the decision-making process are discussed with the aim of defining an overall load-shedding protection scheme, based on real-time system conditions as processed by computer control centers. The basic theory to develop a new concept of load shedding is presented. Load-shedding schemes oriented to minimize the frequency transient fail compatible with limited amounts of disconnected load are sought. Real-time measurements of loads are used in a process to select, for each block of power, those feeders to be disconnected in an eventual emergency. The concept of area transient error (ATE) is introduced in order to look at the possibilities of using it as an indicator of system condition. A first load-shedding scheme applied in one area is based on the ATE. A second scheme, used as a backup, is applied throughout the system and is based on the frequency decay rate and a third crierion based only on power is presented. Tests on a sample system show the effectiveness of the proposed control strategy.
引用
收藏
页码:165 / 171
页数:7
相关论文
共 8 条
[1]   DETERMINATION OF FREQUENCY DECAY-RATES DURING PERIODS OF GENERATION DEFICIENCY [J].
BALDWIN, MS ;
SCHENKEL, HS .
IEEE TRANSACTIONS ON POWER APPARATUS AND SYSTEMS, 1976, 95 (01) :26-36
[2]   LONG-TERM DYNAMIC-RESPONSE OF POWER-SYSTEMS - ANALYSIS OF MAJOR DISTURBANCES [J].
DAVIDSON, DR ;
EWART, DN ;
KIRCHMAYER, LK .
IEEE TRANSACTIONS ON POWER APPARATUS AND SYSTEMS, 1975, PA94 (03) :819-826
[3]   OPERATING UNDER STRESS AND STRAIN [J].
FINK, LH ;
CARLSEN, K .
IEEE SPECTRUM, 1978, 15 (03) :48-53
[4]   OPTIMIZING SYSTEM PERFORMANCE THROUGH DYNAMIC LOAD SHED SCHEDULING [J].
FINLEY, LA ;
STANDISH, TR ;
PHILLIPS, RC .
IEEE TRANSACTIONS ON POWER APPARATUS AND SYSTEMS, 1985, 104 (06) :1286-1289
[5]  
SCHULZ RP, 1984, IEEE T POWER AP SYST, V103, P3471, DOI 10.1109/TPAS.1984.318350
[6]  
Tsang C. P., 1988, IEEE Computer Applications in Power, V1, P39, DOI 10.1109/67.20552
[7]  
Wilson G. L., 1978, IEEE SPECTRUM, V15, P39
[8]   IDENTIFICATION OF STRONG AND WEAK AREAS FOR EMERGENCY STATE CONTROL [J].
WINOKUR, M ;
CORY, BJ .
IEEE TRANSACTIONS ON POWER APPARATUS AND SYSTEMS, 1984, 103 (06) :1486-1492