光伏电站复合接地体电阻稳定性及适应性研究  

Stability and Adaptability of Composite Grounding Body Resistance in Photovoltaic Power Station

作　　者：朱青云 韩宏伟 ZHU Qingyun;HAN Hongwei(Qinghai Products Quality Supervision and Inspection Institute, Xining 810008, China;Qinghai Renewable Energy Research Institution, Xining 810003, China)

机构地区：[1]青海省产品质量监督检验所,西宁810008 [2]青海可再生能源研究所,西宁810003

出　　处：《重庆理工大学学报（自然科学）》2021年第9期262-268,共7页Journal of Chongqing University of Technology：Natural Science

基　　金：国家市场监督管理总局科技计划项目(2017QK124)。

摘　　要：光伏电站接地系统是维护站内电力设备及运行安全可靠的重要基础设施,接地体电阻及稳定性对接地体系统研究设计具有重要意义。通过对青藏高原地区温、湿度和光伏电站接地体电阻的检测,研究了温、湿度的年度变化及其对接地体电阻的影响规律,分析了单体、复合组网接地体的高原适应性和稳定性。实验结果表明:环境温度、湿度、土层结构和接地体类型对接地体电阻具有显著影响;与单体接地体相比,复合组网接地体的设计显著降低接地体电阻并提高其稳定性。该结果对青藏高原地区光伏接地体降阻促稳性设计及研究具有实际意义和作用。The grounding system of photovoltaic power station is an important infrastructure to maintain the safety and reliability of power equipment and operation.The resistance and its stability of grounding body are of great significance to the research and design of grounding body system.In this paper,the stability and adaptability of grounding resistance of the photovoltaic power station are analyzed and studied experimentally.Through the temperature and humidity detection in Qinghai Tibet Plateau,as well as the resistance detection of grounding body,the annual variation of temperature and humidity and the influence of soil structure and temperature and humidity on the stability of grounding resistance are analyzed.The experimental results show that the environmental temperature and humidity,the structure of the grounding soil layer and the composite grounding body have a significant impact on the grounding body resistance.The design of the composite network grounding body can significantly reduce the grounding body resistance and improve the stability of the grounding body resistance.The results have practical significance and effect for the design and research of resistance reduction and stability promotion of photovoltaic grounding body in special environment.

关 键 词：光伏电站接地系统 接地体电阻 复合组网接地体 环境温湿度 

分 类 号：TK-9[动力工程及工程热物理]