基于CDEGS的110kV变电站接地网优化研究  

Study of 110kV Substation Grounding Network Optimization Based on CDEGS

作　　者：邓长征[1,2] 赵自威 邱立[1,2] 傅天奕 谢海龙[1,2] 曹新阳 Deng changzheng Zhao Ziwei Qiu Li Fu Tianyi Xie Hailong Cao Xinyang(College of Electrical Engineering ＆ Renewable Energy, 2. Hubei Provincial Collaborative Innovation Center for Yichang 443002, China 3. Wuhan Branch, China Electric China Three Gorges Univ. ,Yichang 443002,China New Energy Microgrid, China Three Gorges Univ. , Power Research Institute, Wuhan 430074, China)

机构地区：[1]三峡大学电气与新能源学院,湖北宜昌443002 [2]三峡大学新能源微电网协同创新中心,湖北宜昌443002 [3]中国电力科学研究院(武汉),武汉430074

出　　处：《三峡大学学报（自然科学版）》2017年第5期79-83,共5页Journal of China Three Gorges University：Natural Sciences

基　　金：国家自然科学基金(51507092)

摘　　要：接地网性能的好坏直接关系到变电站二次设备与运维检修人员的安全,合理的设计接地网至关重要.湖北某地区由于电网网架结构薄弱,规划新建若干座变电站,本文结合该地区110kV变电站典型工程现场情况,运用专业接地计算仿真软件CDEGS对变电站接地网的接地电阻、地电位升、接触电压、跨步电压进行计算分析.对水平地网的均压优化、局部换土、增设垂直接地极、扩大接地网面积等方案的技术性和经济性进行综合评估,选取最合理的接地网优化方案,为本变电站站接地网工程提供参考.The performance of grounding network is directly related to the safety of substation secondary e- quipment and the operation or maintenance staff, so it is extremely significant to design grounding network reasonably. Due to the power grid structure is weak in a region of Hubei province, several new substations are planned for construction. In this paper, combining with typical 110 kV substation project site in the re- gion, the professional grounding calculation simulation software CDEGS is applied to calculate and analyze the grounding resistance, ground potential rise, step voltage and touch voltage. The technicality and economy of balancing the voltage of horizontal grounding network , replacing part of the soil, increasing the number of deep well vertical grounding electrodes, expanding grounding network area and other options are comprehen- sively evaluated to select the most reasonable grounding network optimization scheme, so as to provide a ref- erence basis for the project.

关 键 词：CDEGS 110KV变电站 接地网优化 接地电阻 

分 类 号：TM862.3[电气工程—高电压与绝缘技术]