Method on Hierarchical Coordinated Optimization of Electrical Energy Storage and Thermoelectric Power for Accommodation of Curtailed Wind Power

doi:10.11930/j.issn.1004-9649.202002130

Abstract

Abstract: Large scale combined heat and power (CHP) units exist in Northern China, but their peak regulation capacities are limited due to the heating demand in winter. This results in the wind power curtailment problem in winter. Adding energy and thermal storage devices is regarded as an important method to improve peak regulation capacities of CHP units. This paper studies the coordinated optimization method of CHP units, energy and thermal storage under the ancillary service market environment. To maximize the thermal storage benefit and peak load regulation benefit of electrical energy storage and CHP units respectively, this paper builds a hierarchical coordinated optimization model that considers wind power accommodation maximization, heating demand constraint and the operating constraints of CHP units, electrical and thermal energy storage. Through the simulation testing, the proposal can coordinate the operation between the electrical energy storage device and thermal storage device, and take full advantage of multi-day adjustment ability of thermal storage device, so as to increase the system operating benefits in power market and reduce wind power curtailment. These research results have reference value for solving wind power curtailment problem in winter under current power market environment in Northern China.

Key words: CHP, energy storage, thermal storage, peak regulation, multi-day, wind power curtailment

YANG Yulong, LI Pai, HUANG Yuehui, WANG Guilin, ZHOU Yigang. Method on Hierarchical Coordinated Optimization of Electrical Energy Storage and Thermoelectric Power for Accommodation of Curtailed Wind Power[J]. Electric Power, 2020, 53(12): 127-135.

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URL: https://www.electricpower.com.cn/EN/10.11930/j.issn.1004-9649.202002130

https://www.electricpower.com.cn/EN/Y2020/V53/I12/127

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