Two-stage Optimization of Medium- and Long-term Electricity Security Check Based on Security-constrained Unit Commitment

被引：0
|
作者：
Li L. [1 ,2 ]
Wang Z. [3 ]
Wang G. [3 ]
Zhou W. [3 ]
Yang L. [1 ,2 ]
机构：
[1] NARI Group Corporation, State Grid Electric Power Research Institute, Nanjing
[2] State Key Laboratory of Smart Grid Protection and Control, Nanjing
[3] State Grid Jiangsu Electric Power Co., Ltd., Nanjing
来源：
Dianli Xitong Zidonghua/Automation of Electric Power Systems | 2020年 / 44卷 / 13期
基金：
国家重点研发计划;
关键词：
Electricity contract; Electricity market; Security check; Security correction; Security-constrained unit commitment;
D O I：
10.7500/AEPS20190313005
中图分类号：
学科分类号：
摘要：
A two-stage optimization method for medium- and long-term electricity security check based on security-constrained unit commitment (SCUC) is proposed to quantify and evaluate the security risks that the medium- and long-term electricity plan and trading contract may bring to the operation of power grid, and to solve the problems of locating and adjustment of the restrictive factors in the implementation of the electric quantity contract. In the first stage, the electricity constraints of the power plant are strictly analyzed. In order to minimize the over-limit of section power flow, the optimization model of electricity security check is established to obtain the optimal plan of unit commitment scheme. In the second stage, the power grid operation constraints are considered and the optimization model of electricity correction is established to eliminate the over-limit of the section by adjusting the plan of unit commitment. By coordinating the two-stage optimal dispatch of electricity balance and power grid security, the conclusion of feasibility for electricity contract can be acquired, or the orientation of causes and adjustment schemes can be obtained when it is not feasible. The effectiveness and practicability of the method are verified by the analysis of the practical systems. © 2020 Automation of Electric Power Systems Press.
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收藏
页码：166 / 171
页数：5
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