考虑新能源接入的配电网两阶段有功无功协调降损方法  

A Two-Stage Active and Reactive Power Coordinated Loss Reduction Method for Distribution Networks Integrated with New Energy

作　　者：张艳丽 王争冕 薛成 仇继扬 李小腾 周倩 ZHANG Yanli;WANG Zhengmian;XUE Cheng;QIU Jiyang;LI Xiaoteng;ZHOU Qian(State Grid Shaanxi Electric Power Research Institute,Xi’an 710054,Shannxi,China;Xi’an University of Technology,Xi’an 710048,Shannxi,China;State Grid Shaanxi Electric Power Company,Xi’an 710048,Shaanxi,China)

机构地区：[1]国网陕西省电力有限公司电力科学研究院,陕西西安710054 [2]西安理工大学,陕西西安710048 [3]国网陕西省电力有限公司,陕西西安710048

出　　处：《电网与清洁能源》2023年第12期121-129,共9页Power System and Clean Energy

基　　金：国家自然科学基金项目(52009106);国网陕西省电力有限公司科技项目(5226KY220012)。

摘　　要：随着新能源的大规模并网,因其具有的波动性和不确定性,给配电网的降损工作带来新挑战。提出基于二阶锥规划的配电网日前日内两阶段有功无功协调降损方法。利用二阶锥规划对潮流模型进行松弛,并对非线性离散设备进行线性化,使该问题成为一个非凸的混合整数规划问题;考虑配电网有功无功的强耦合性,在日前阶段通过有功无功协调配合降低配电网的网损,并利用日前阶段慢响应设备的优化结果以及日内短时间尺度的新能源出力预测,对配电网系统进行日内阶段的滚动无功降损优化,保证系统安全运行的同时也满足了经济性需求;通过在改进的IEEE 33节点系统上进行仿真计算,验证所提方法的可行性。With the large-scale grid integration of new energy sources in the power grid,the volatility and uncertainty of new energy sources bring new challenges to the loss reduction work of distribution networks.Therefore,this paper proposes a two-stage active-reactive coordination loss reduction method based on second-order cone planning within the day-ahead day of the distribution network.First,the tidal model is relaxed using second-order cone programming and the nonlinear discrete devices are linearized,making it a nonconvex mixedinteger programming issue.Second,considering the strong coupling of active and reactive power in the distribution network,the network loss of the distribution network is reduced by active and reactive power coordination in the day-ahead stage.And using the optimization results of slow-response devices in the day-ahead phase and the new energy output prediction in the short time scale in the day-ahead phase,the rolling reactive power loss reduction optimization of the distribution network system in the day-ahead phase is carried out to ensure the safe operation of the system while also meeting the economic requirements.Finally,the feasibility of the proposed method is verified by performing simulation calculations on the modified IEEE 33-node system.

关 键 词：主动配电网 日前日内优化 有功无功协调 二阶锥规划 

分 类 号：TM761[电气工程—电力系统及自动化]