A fast optimal load shedding method for power system reliability assessment based on shadow price theory

被引:0
作者
Hou K. [1 ]
Tang P. [1 ]
Liu Z. [2 ]
Jia H. [2 ]
Yuan K. [3 ]
Sun C. [3 ]
Song Y. [3 ]
机构
[1] Key Laboratory of Smart Grid of Ministry of Education, Tianjin University, Tianjin
[2] Key Laboratory of Smart Energy and Information Technology of Tianjin Municipality, Tianjin University, Tianjin
[3] State Grid Economic and Technological Research Institute Co., Ltd., Beijing
基金
英国工程与自然科学研究理事会; 中国国家自然科学基金;
关键词
Optimal load shedding; Reliability assessment; Sensitivity analysis; Shadow price;
D O I
10.1016/j.egyr.2021.11.104
中图分类号
学科分类号
摘要
The optimal load shedding calculations of an enormous number of contingency states are the most challenging impediments for power system reliability assessment, especially in a large-scale system with multiple types of loads. To deal with that, this paper proposes a fast method that accelerates the calculation of optimal load shedding based on the shadow price. This method calculates the optimal load shedding of systems by shadow-price-based linear functions, rather than the time-consuming OPF algorithms. The hundred percentage criterion is used to look for the matching shadow price of states. Case studies are performed on the RTS-79 system. The results show that the proposed methodology can significantly simplify the solving process and reduce the calculation time. © 2021 The Author(s)
引用
收藏
页码:352 / 360
页数:8
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