基于电气参数加权占比的新能源场站分布式调相机容量配置研究  

Research on Distributed Condenser Capacity Configuration of New Energy Field Station Based on the Weighted Proportion of Electrical Parameters Index

作　　者：张建坡[1] 孟凡 吴林林 孙大卫 高本锋[1] ZHANG Jianpo;MENG Fan;WU Linlin;SUN Dawei;GAO Benfeng(Hebei Key Laboratory of Distributed Energy Storage and Micro-grid(North China Electric Power University),Baoding 071003,Hebei Province,China;Electric Power Research Institute of State Grid Jibei Electric Power Co.,Ltd.,Xicheng District,Beijing 100045,China)

机构地区：[1]河北省分布式与微网重点实验室(华北电力大学),河北省保定市071003 [2]国网冀北电力有限公司电力科学研究院,北京市西城区100045

出　　处：《电网技术》2024年第10期4185-4194,I0068,共32页Power System Technology

摘　　要：新能源经高压直流外送系统逆变侧换相失败会导致送端系统暂态过电压问题。作为动态电压支撑设备之一的调相机可有效提升电网电压支撑强度,在抑制暂态过电压及加快故障恢复方面得到广泛关注。针对利用分布式调相机抑制暂态过电压问题,该文首先基于新能源多场站短路比分析电网强度影响因素;然后研究调相机接入对电网参数及强度的影响,同时利用灰色关联分析法计算影响因素与电网强度关联程度,进而以此为权重,提出综合考虑各电气参数影响的调相机容量配置依据指标α;最后以α和过电压水平为约束,研究分布式调相机容量配置方案,并利用机电暂态仿真,从经济性和有效性两个方面验证调相机容量配置方案正确性。The failure of the commutation at the inverter side of the new energy through the high-voltage DC external transmission system may lead to the transient overvoltage problem of the sending end system.As one of the dynamic voltage support devices,the synchronous condenser can effectively improve the voltage support strength of the power grid,which has received widespread attentions in suppressing transient overvoltage and speeding up fault recovery.Aiming at the problem of suppressing the transient overvoltage by using distributed synchronous condensers,this paper first analyzes the influencing factors of power grid strength based on the multiple renewable energy station short circuit ratio.Then,the influence of the condenser access on the power grid parameters and intensity is studied.The gray correlation analysis is used to calculate the degree of correlation between the influencing factors and the power grid strength.Then,taking it as a weight,anαindex is proposed for the capacity allocation of the condenser that comprehensively considers the influence of each electrical parameter.Finally,taking theαindex and the overvoltage levels as constraints,the distributed synchronous condenser capacity configuration scheme is studied.The electromechanical transient simulation is used to verify the correctness of the condenser capacity configuration scheme from the two aspects of economy and effectiveness.

关 键 词：分布式调相机 短路比 灰色关联度 容量配置 

分 类 号：TM721[电气工程—电力系统及自动化]