Day-Ahead Optimal Scheduling of Integrated Energy System Considering Suppression of Tie Line Peak-Valley Difference and Photovoltaic Accommodation

doi:10.11930/j.issn.1004-9649.201806094

Abstract

Abstract: Connection of numerous photovoltaic generations in the integrated energy station has led to a big peak-valley difference in the public power grid, which has adverse effects on the safe operation of the public power grid. Based on the demand of public power grid and energy station scheduling, this paper proposes a day-ahead optimization scheduling method of integrated energy station, which can suppress the peak-valley difference of the tie line and fully absorb the photovoltaic power. Firstly, based on the optimal scheduling result of the load base value, a method is proposed to determine the tie line power expectation value. And then, a day-ahead optimization scheduling model of integrated energy station is put forward considering the tie line peak-valley difference and photovoltaic accommodation, which takes the lowest total cost as the objective and sets the tie-line transmission power constraint according to the tie-line power expectation value. The simulation results of an example have verified the feasibility and effectiveness of the proposed method, which can better absorb photovoltaic power while ensuring the safe operation of the public power grid.

Key words: integrated energy station, load base value, tie line power expectation, peak-valley difference, photovoltaic accommodation

CLC Number:

TM73

LIU Chang, LI Hao, SUN Longbiao, LI Jiaxin, ZHANG Xiaohui, WU Bangxu, TANG Wei, WEI Yaran. Day-Ahead Optimal Scheduling of Integrated Energy System Considering Suppression of Tie Line Peak-Valley Difference and Photovoltaic Accommodation[J]. Electric Power, 2018, 51(8): 70-76.

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URL: https://www.electricpower.com.cn/EN/10.11930/j.issn.1004-9649.201806094

https://www.electricpower.com.cn/EN/Y2018/V51/I8/70

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