DocumentCode :
1485316
Title :
Adaptive approach to load shedding including pumped-storage units during underfrequency conditions
Author :
Huang, S.J. ; Huang, C.-C.
Author_Institution :
Dept. of Electr. Eng., Nat. Cheng Kung Univ., Tainan, Taiwan
Volume :
148
Issue :
2
fYear :
2001
fDate :
3/1/2001 12:00:00 AM
Firstpage :
165
Lastpage :
171
Abstract :
An adaptive approach is proposed for load shedding including the consideration of pumped-storage units during underfrequency conditions. Based on the idea of average or uniform frequency behaviour, a load-frequency control model is utilised in the scheme design. At this stage, Taiwan Power Company (Taipower) owns ten pumped-storage units that amount to about 13% of the total rating capacity. These units can be operated in generating mode during peak period, to reduce generation cost, or operated in pumping mode during off-peak period, to consume the surplus power. As the difference between the peak load and off-peak load of Taipower is considerable, pumped-storage units are playing a critical role in Taipower operations. Once disturbances take place in off-peak periods, pumped-storage units can be thus shed with a high priority. As they are useful in both restoring system frequency and decreasing the degree of service interruptions, these pumped-storage units have been included in the proposed load-shedding scheme design and tested through the utility data. From test results and comparisons with the existent utility shedding scheme, they have demonstrated the feasibility and practicality of the method for such applications
Keywords :
frequency control; load regulation; load shedding; pumped-storage power stations; Taipower; Taiwan Power Company; adaptive approach; generating mode; generation cost reduction; load shedding; load-frequency control model; load-shedding scheme; off-peak load; peak load; pumped-storage units; surplus power consumption; system frequency restoration; total rating capacity; underfrequency conditions; uniform frequency behaviour;
fLanguage :
English
Journal_Title :
Generation, Transmission and Distribution, IEE Proceedings-
Publisher :
iet
ISSN :
1350-2360
Type :
jour
DOI :
10.1049/ip-gtd:20010020
Filename :
920896
Link To Document :
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