Two-Stage Optimal Scheduling of Highway Self-Consistent Energy System in Western China

Yujiang Ye, Ruifeng Shi (), Yuqin Gao, Xiaolei Ma and Di Wang
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Yujiang Ye: School of Control and Computer Engineering, North China Electric Power University, Beijing 102206, China
Ruifeng Shi: School of Control and Computer Engineering, North China Electric Power University, Beijing 102206, China
Yuqin Gao: School of Control and Computer Engineering, North China Electric Power University, Beijing 102206, China
Xiaolei Ma: College of Transportation Science and Engineering, Beihang University, Beijing 100191, China
Di Wang: Power China Guizhou Electric Power Engineering Co., Ltd., Guiyang 550081, China

Energies, 2023, vol. 16, issue 5, 1-18

Abstract: Under the background of “carbon peaking and carbon neutrality goals” in China, the Highway Self-Consistent Energy System (HSCES) with renewable energy as the main body has become a key research object. To study the operational status of the HSCES in a specific region and realize the economically optimal operation of the HSCES, an HSCES model in a low-load, abundant-renewable-energy and no-grid scenario is established, and a two-stage optimal scheduling method for the HSCES is proposed. Moreover, in the day-ahead stage, uncertainty optimization scenarios are generated by Latin hypercube sampling, and a definition of the self-consistent coefficient is proposed, which is used as one of the constraints to establish a day-ahead economic optimal scheduling model. Through the case comparison analysis, the validity of the day-ahead scheduling model is confirmed and the optimal day-ahead scheduling plan is attained. Furthermore, in the intra-day stage, an intra-day rolling optimization method is proposed, which can effectively track the day-ahead scheduling plan and reduce the impact of forecast errors and energy fluctuations by coordinating the unit output within the HSCES system. It is verified that the HSCES can operate economically and safely in Western China, and self-consistently, without grid support.

Keywords: Highway Self-Consistent Energy System; island microgrid; Latin hypercube sampling; self-consistent coefficient; optimal scheduling strategy (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2023
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