Abstruct -This paper describes what automatic generation control (AGC) might be expected to do, and what may not be possible or expedient for it to do. The purposes and objectives of AGC are limited by physical elements involved in the process and, hence, the relevant characteristics of these elements are described. For reasons given in this paper, it is desired that AGC act slowly and deliberately over tens of seconds or a few minutes. From a perspective of utility operations, there is no particular economic or control purpose served by speeding up the AGC action.By this Task Force paper, the System Control Subcommittee is providing a resource to the power engineering community to help guide research into topics related to AGC.
Thls paper I s one o f a series presented on behalf o f the System Operations Subcomittee w l t h the i n t e n t o f focusing industry a t t e n t l o n on current problems faced by e l e c t r l c u t i l l t l e s I n the operation o f the bulk power supply system. Five short note reports are presented dealing w i t h various cost aspects associated w t t h Automatic Generation Control (AGC), Inadvertent energy and tlme e r r o r . The f i r s t r e p o r t provides a general overvlew o f some o f t h e AGC operatlng costs t o consider. Q u a n t i f i c a t i o n o f some o f these operatlng costs I s o u t l i n e d i n t h e second report. Report number three deals w l t h ' t h e 'reserve l l a b l l l t y ' and the ' r a t e t o c o n t r o l ' costs when purchasing AGC c a p a b l l l t y . I n r e p o r t four, economlc Implications o f inadvertent energy are consldered. I n t h e f i n a l report. t h e cost impact o f time e r r o r and tlme e r r o r c o r r e c t l o n are presented.
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