Evaluation Method and Promotion Measures for Energy Supply Flexibility of Distribution System Containing Clean Energy in Rural Areas

doi:10.3969/j.issn.1000-7229.2019.08.002

Abstract

Abstract: In view of the problem that the existing evaluation methods for distribution network flexibility cannot reflect the demand of rural distribution network for heat load in the heating season, this paper proposes a method for evaluating the flexibility of rural distribution system containing clean energy and gives some improving measures. Firstly, the structure of rural distribution system containing clean energy is established, and the equipment model of household decentralized electric heating supply subsystem is constructed. Secondly, according to the feasibility of uncertain time-series load band, the basic idea of power supply flexibility evaluation for distribution system is proposed. Thirdly, on the basis of establishing uncertain region, day-ahead dispatching model of regional distribution network is constructed, solution method based on genetic algorithm is proposed, and the calculation method of flexibility index is proposed. The measures to improve the flexibility of rural distribution system containing clean energy are analyzed. Finally, the evaluation method and improving measures proposed in this paper are verified by analysis of an example.

Key words: flexibility evaluation, uncertainty region, rural distribution network, heating demand

CLC Number:

TM 315

XIONG Ning, ZHANG Min, ZHU Wenguang, GE Shaoyun, ZHONG Shiyuan, SHU Jiao, XU Zhengyang. Evaluation Method and Promotion Measures for Energy Supply Flexibility of Distribution System Containing Clean Energy in Rural Areas[J]. Electric Power Construction, 2019, 40(8): 12-18.

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