| 引用本文: | 刘阳,夏添,汪旸.区域电网内多输电断面有功协同控制策略在线生成方法[J].电力自动化设备,2020,40(7): |
| LIU Yang,XIA Tian,WANG Yang.On-line generation method of active power coordinated control strategy for multiple transmission sections in regional power grid[J].Electric Power Automation Equipment,2020,40(7): |
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| 摘要: |
| 以多个断面功率不越极限为控制目标、调整量最小为优化目标，基于直流潮流法的断面有功灵敏度建立求解多断面有功协同控制策略的非线性规划模型；为提高模型求解的可靠性和速度，引入辅助变量将该模型转化为线性规划模型；利用交流潮流法进行安全校核，以检验策略的有效性。从计算启动、建模求解及安全校核三方面设计闭环的在线滚动计算流程；提出适用于各种网络拓扑变化的节点电纳矩阵及其逆矩阵的滚动修正方法；采用可调元件有功调节限值修正策略剔除无效的调整措施。案例结果验证了所提方法的有效性；且每轮计算耗时在2 min以内，表明所提方法的计算速度满足实时调度要求。 |
| 关键词: 多输电断面 有功协同控制 实时调度 有功安全校正 非线性规划 线性规划 断面有功灵敏度 |
| DOI：10.16081/j.epae.202007008 |
| 分类号:TM73 |
| 基金项目: |
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| On-line generation method of active power coordinated control strategy for multiple transmission sections in regional power grid |
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LIU Yang, XIA Tian, WANG Yang
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Central Branch of State Grid Corporation of China, Wuhan 430077, China
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| Abstract: |
| 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. |
| Key words: multiple transmission sections active power coordinated control real-time dispatching active power security correction nonlinear programming linear programming section active power sensitivity |
