The Impact of Outside Electricity on the Ancillary Service of Power Grid with High-Penetration Received Electricity

doi:10.11930/j.issn.1004-9649.201707090

Abstract

Abstract: With a large number of UHV projects being put into operation in recent years, the proportion of received electricity in the receiving-end grid has increased substantially. To improve the stability and reliability of the power grid, the ancillary service is highly important to the receiving-end grid with high-penetration received electricity. Focusing on the ancillary service, this paper discusses the influence of the characteristics of outside electricity on the peak-shaving and standby capacity demand. Based on the optimized peak-shaving and standby demand, the outside electricity is equivalent to three-segment output power, and a multi-generation combined model is used to simulate the impacts of the outside electricity on local generation sources. The simulation results show that the outside thermal power has a relatively small impacts on peak-shaving and standby demand, and the hydropower has the biggest impacts on the standby demand in valley load time because of its full-capacity generation during flood season,while the outside wind power has the biggest impacts on peak-shaving duo to its reversed peak-shaving features and very high impacts on the standby demand in valley load time due to its uncertainty and high output in valley load period.

Key words: outside electricity, receiving-end grid, ancillary service, peak shaving, standby demand

CLC Number:

TM732

WANG Weiyuan, ZHAO Nan, ZHANG Jiannan, ZHU Huan, WANG Beibei, DOU Fei, NIU Wenjuan. The Impact of Outside Electricity on the Ancillary Service of Power Grid with High-Penetration Received Electricity[J]. Electric Power, 2018, 51(11): 67-73.

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URL: https://www.electricpower.com.cn/EN/10.11930/j.issn.1004-9649.201707090

https://www.electricpower.com.cn/EN/Y2018/V51/I11/67

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