考虑静态电压稳定性的含风电场电力系统两阶段无功优化配置  

Two Stage Optimal Reactive Power Allocation of Power Systemwith Wind Farm Considering Static Voltage Stability

作　　者：朱维骏 杜振东 翁华 郁丹 刘晓芳 Zhu Weijun;Du Zhendong;Weng Hua;Yu Dan;Liu Xiaofang(Zhejiang Huayun Electric Power Engineering Design Consulting Co., Ltd., Hangzhou Zhejiang 310006, China)

机构地区：[1]浙江华云电力工程设计咨询有限公司,浙江杭州310006

出　　处：《电气自动化》2021年第6期53-57,60,共6页Electrical Automation

基　　金：浙江华云电力工程设计咨询有限公司科技项目(2019C01D01P04)资助

摘　　要：为了在大规模风电并网的情况下提高系统静态电压稳定性和减小电压越限及网损,提出了考虑静态电压稳定性以及多场景的两阶段无功优化配置方法。第一阶段利用L指标灵敏度确定无功补偿的候选节点,第二阶段在此基础上利用线性交流潮流,将问题转化为混合整数线性规划问题,以电压越限、网损和经济性指标等综合最小化为目标,同时考虑多种风电不确定性场景,优化得到无功补偿装置的安装容量以及实时投切情况。IEEE 39节点系统的仿真结果验证了所提无功优化配置方法可显著提升系统静态电压稳定性,并大幅减小电压越限以及有功、无功网损。同时无功补偿装置的投入可减小发电机组的无功出力,有利于提高发电侧功率因数。In order to improve the static voltage stability and reduce the voltage overrun and grid loss in the case of large-scale wind power integration,a two-stage reactive power optimization allocation method considering static voltage stability and multiple scenarios was proposed.In the first stage,the sensitivity of L index was used to determine the candidate nodes of reactive power compensation;in the second stage,based on the linear AC power flow,the problem was transformed into a mixed integer linear programming problem,which takes the comprehensive minimization of voltage overrun,network loss and economic indicators as the objective,and considers various wind power uncertainty scenarios to optimize the installation capacity of reactive power compensation device and real-time switching.The simulation results of IEEE 39 nodal system verify that the proposed reactive power optimization allocation method can significantly improve the static voltage stability of the system,and greatly reduce the voltage overrun,active and reactive power network losses.At the same time,the input of reactive power compensation device can reduce the reactive power output of the generator set,beneficially improving the power factor at the generation side.

关 键 词：静态电压稳定性 无功配置 混合整数规划 电压越限 风电不确定性 

分 类 号：TM727.2[电气工程—电力系统及自动化]