考虑电气耦合与电网无功强度的调相机经济优化配置研究  

Study on economical optimal allocation of synchronous condenser considering electrical coupling and grid reactive power strength

作　　者：陈尚鹏 包广清[1,2] CHEN Shang-peng;BAO Guang-qing(College of Electrical and Information Engineering,Lanzhou University of Technology,Lanzhou 730050,China;School of Electrical Engineering and Information,Southwest Petroleum University,Chengdu 610500,China)

机构地区：[1]兰州理工大学电气工程与信息工程学院,甘肃兰州730050 [2]西南石油大学电气信息学院,四川成都610500

出　　处：《兰州理工大学学报》2025年第1期83-91,共9页Journal of Lanzhou University of Technology

基　　金：国家自然科学基金(51967012);甘肃省重点研发计划(20YF8GA055)。

摘　　要：新能源发电设备无功弱支撑性往往难以满足电网近区短路故障稳定运行需求,常配置同步调相机等补偿装置以提高电网电压强度.针对新能源电力系统故障时调相机的配置优化问题,将电气距离纳入常规电压评价指标,提出考虑节点耦合的选址指标,对该指标排序以筛选出调相机的拟接入位置;其次以新能源多场站短路比和等年值作为定容指标,选取满足电网无功强度时配置成本最小方案作为调相机较优配置方案;最后建立仿真案例,分析结果表明,该方法得出的同步调相机配置点在三相短路故障时,在保证电网电压强度的同时显著提升了配置方案的经济性,方法有效性得以验证.The weak reactive power support of new energy power generation equipment is often difficult to meet the stable operation requirements of short-circuit faults in the near area of the power grid.Compensation devices such as synchronous condensers are often configured to improve the voltage intensity of the power grid.Aiming at the configuration optimization problem of the synchronous condenser when the new energy power system fails,the electrical distance is incorporated into the conventional voltage evaluation index,and the location index considering the node coupling is proposed.The index is sorted to screen out the proposed access location of the synchronous condenser.Secondly,taking the short circuit ratio and annual value of new energy multi-station as the constant capacity index,the scheme of minimum configuration cost when meeting the reactive power intensity of the power grid is selected as the optimal configuration scheme of the condenser.Finally,a simulation case is established.The analysis results show that the synchronous condenser configuration point obtained by this method can significantly improve the economy of the configuration scheme while ensuring the voltage intensity of the power grid when the three-phase short-circuit fault occurs,and the effectiveness of the method is verified.

关 键 词：无功补偿 调相机配置 电气距离 新能源多场站短路比 选址定容 

分 类 号：TM342[电气工程—电机]