Enhanced Security-constrained Optimal Power Flow Considering Dynamic Thermal Rating of Transmission Lines

被引：0
作者：
Lou X. [1 ]
Wang L. [1 ]
Guo C. [1 ]
Shi Y. [1 ]
机构：
[1] College of Electrical Engineering, Zhejiang University, Hangzhou
来源：
Dianli Xitong Zidonghua/Automation of Electric Power Systems | 2019年 / 43卷 / 18期
基金：
国家重点研发计划;
关键词：
Corrective control; Dynamic thermal rating; Preventive control; Security-constrained optimal power flow (SCOPF); Transmission line;
D O I：
10.7500/AEPS20190429012
中图分类号：
学科分类号：
摘要：
Faced with the complex internal and external risks, the random failures from electric transmission and transformation equipment have become a significant factor affecting the safe operation of power grids. Aiming at the lack of flexibility or security for the existing security-constrained optimal power flow models, an enhanced security-constrained optimal power flow (ESCOPF) model is proposed. The technology of dynamic thermal rating of transmission lines is applied to ensure the safe operation of power grids after the occurrence of credible contingencies and before the intervention of corrective control. In addition, an algorithm based on Benders decomposition is proposed. It can divide the original problem into the main problem of preventive control, sub-problems of dynamic thermal rating check and corrective control feasibility check. The Benders cuts are continuously returned back to the main problem to modify the generation plan of generator units until the optimal generation plan satisfying all check sub-problems can be finally obtained. The results of case studies indicate that the ESCOPF model can fully utilize the transfer capability of lines, enlarge the safe range of operation and improve the operation economy of power grids. © 2019 Automation of Electric Power Systems Press.
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页码：26 / 34
页数：8
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