Analysis of Pump Storaged's Functions at Grid Frequency Control and Contigency Response
Volume 7, Issue 3, June 2019, Pages: 38-43
Received: Jun. 22, 2019;
Accepted: Aug. 4, 2019;
Published: Oct. 11, 2019
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Chen Tongfa, Department of Planning, State Grid Xinyuan Holding Company, Beijing, China
Wan Zhengxi, East China Tian Huangping Pump Storaged Power Company, Beijing, China
Yan Lei, Huilong Branch of State Grid Xinyuan Holding Company, Beijing, China
Wu Zheng, Department of Planning, State Grid Xinyuan Holding Company, Beijing, China
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Frequency stability is one of the crucial indicators of electric power system. Pumped storage hydro (PSH) serves to improve grid security and achieve cost effectiveness and efficiency of overall power system. Frequency regulation is one of PSH's important ancillary services offered to grid. Based on the conventional classifications of frequency regulation, ie., primary frequency regulation (PFR), secondary frequency regulation (SFR) and tertiary frequency regulation (TFR), this paper explores the interreaction process of generation and grid in detailed and proposes two more frequency regulations which are defined as initial frequency regulation (IFR) and 2.5th frequency regulation (contingency frequency regulation, CFR). Therefore the principles and characteristics of five types of frequency regulation are introduced and presented, and performance and economics of various generation units such as hydro, coal-fired, gas, gas combined-cycle and PSH that are engaged in five types of frequency regulation are compared and analyzied in this paper. Especially, the performance of PSH on CFR are illustrated in detail with successful operations of several pump-storage power plants in East China and North China grid under the circumstance of contingency. In one hand PSH's competence on CFR is advantageous compared to other generation units, in the otherhand since the PSH's compensation from frequency regulation is too minor, and more importantly, to avoid mix-up of CFR and contingency reserve which is the core competence of PSH, rhetorical assessment is not proposed on PSH's capability at CFR.
PSH, Frequency Regulation, Contingency
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Analysis of Pump Storaged's Functions at Grid Frequency Control and Contigency Response, Science Research.
Vol. 7, No. 3,
2019, pp. 38-43.
Copyright © 2019 Authors retain the copyright of this article.
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