Coordinated Dispatch Method of Heat and Power Systems Considering Peaking Ancillary Services

doi:10.11930/j.issn.1004-9649.201904071

Abstract

Abstract: China's northern regions are rich in wind resources, but the wind curtailment becomes a critical problem during the heating season due to the output characteristics of combined heat and power units. The central heating system covers a large area, and has a huge pipeline volume and a strong heat storage capacity and thermal inertia. If the central heating system can be dispatched reasonably, the peak regulation of the power system can be significantly improved, and the wind power consumption can be promoted. In order to improve the peak regulation capacity of power grids, the peaking ancillary service market has been launched in various areas in China to stimulate renovation and flexibility of the thermal power units and to expand their output regions. This paper makes a study of the coordinated dispatch method of heat and power systems considering peaking ancillary services, and constructs heating system models to characterize their dynamic characteristics, in which the ancillary services are considered in the objective function. Simulation tests are conducted through a provincial-level system, which demonstrate the rationality of the proposed model, The economic benefits of the model are calculated in promoting wind power consumption.

Key words: peaking ancillary services, combined heat and power dispatch, wind power utilization, heating system, combined heat and power unit

CLC Number:

TM73

LIN Chenhui, WU Wenchuan, WANG Bin, SUN Yong. Coordinated Dispatch Method of Heat and Power Systems Considering Peaking Ancillary Services[J]. Electric Power, 2019, 52(6): 45-53.

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URL: https://www.electricpower.com.cn/EN/10.11930/j.issn.1004-9649.201904071

https://www.electricpower.com.cn/EN/Y2019/V52/I6/45

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