On-line generation method of active power coordinated control strategy for multiple transmission sections in regional power grid

被引：0
|
作者：
Liu Y. [1 ]
Xia T. [1 ]
Wang Y. [1 ]
机构：
[1] Central Branch of State Grid Corporation of China, Wuhan
来源：
Dianli Zidonghua Shebei/Electric Power Automation Equipment | 2020年 / 40卷 / 07期
关键词：
Active power coordinated control; Active power security correction; Linear programming; Multiple transmission sections; Nonlinear programming; Real-time dispatching; Section active power sensitivity;
D O I：
10.16081/j.epae.202007008
中图分类号：
学科分类号：
摘要：
A nonlinear programming model based on the section active power sensitivity of DC power flow method is built to solve the active power coordinated strategy of multiple sections, which takes the power of multiple sections within the limit as its control objective and the minimum adjustment quantity as its optimal objective. In order to improve the reliability and speed of model-solving, the auxiliary variables are introduced to transfer the model into a linear programming model. The AC power flow method is used for security check to verify the validity of the strategy. The closed-loop on-line rolling calculation flowchart is designed from three aspects of calculation startup, modeling and solving, and security check. The rolling modification method of node admittance matrix and its inverse matrix suitable for various grid topology change conditions is proposed. The modification strategy of active power adjustment limit of adjustable elements is used to eliminate invalid adjustment measures. The case results verify the effectiveness of the proposed method. The calculation time of each round is within 2 min, which shows that the calculation speed of the proposed method satisfies the requirement of real-time dispatching. © 2020, Electric Power Automation Equipment Press. All right reserved.
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页码：204 / 210
页数：6
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