摘要
变电站接地网系统改造升级过程中,新建接地网对原接地网会产生一定的阻性耦合影响,导致接地系统性能下降,严重威胁电力系统的稳定运行。根据实际工程所提供的数据,基于矩量法以及CDEGS和power station 2种仿真软件对变电站新建接地网与原接地网之间的阻性耦合影响进行研究分析,并根据安全限值标准进一步讨论该变电站接地网系统的优化方案。仿真结果表明,随着新建接地网与原接地网之间水平距离的变化,其阻性耦合的影响也会发生相应的改变,并可通过增设垂直接地体以及网孔数量进一步优化变电站接地网系统,以达到电力系统的稳定运行。
In the process of transforming and upgrading the substation grounding network system,the new grounding network has a certain resistance coupling effect on the original grounding network,resulting in a serious decline in the performance of the grounding system,which seriously threatens the stable operation of the power system.According to the data provided by the actual project,based on the method of moments and two simulation software,CDEGS and power station,the impact of the resistive coupling between the new grounding network and the original grounding network of the substation is studied and analyzed,and the optimization of the grounding network system of the substation is further discussed according to the safety limit value standard.Simulation results show that with the change of horizontal distance between the new grounding network and the original grounding network,the impact of resistive coupling will change accordingly,and can be further optimized through the addition of vertical grounding body as well as the number of mesh holes in the substation grounding network system in order to achieve stable operation of the power system.
作者
王乐天
刘振
宋萌清
郑轩
李闯
姚新岳
郭东波
马成廉
WANG Letian;LIU Zhen;SONG Mengqing;ZHENG Xuan;LI Chuang;YAO Xinyue;GUO Dongbo;MA Chenglian(Shandong Electric Power Engineering Consulting Institute Co.,Ltd.,Jinan 250013,Shandong,China;Key Laboratory of Modern Power System Simulation and Control&Renewable Energy Technology,Ministry of Education(Northeast Electric Power University),Jilin 132012,Jilin,China;School of Information and Control Engineering,Jilin Institute of Chemical Technology,Jilin 132022,Jilin,China)
出处
《电网与清洁能源》
CSCD
北大核心
2023年第9期32-39,46,共9页
Power System and Clean Energy
基金
国家重点研发计划项目(2019YFB1505404)
山东电力工程咨询院有限公司科技项目(37-K2022-061)
吉林省教育厅科学技术研究项目(JJKH20230117KJ)。
