摘要
合理地设计光伏电站接地网,是保证光伏电站安全、稳定、可靠运行的一个重要措施。理想的接地网应具有接地电阻值低、综合造价低、使用寿命长、热稳定性好、接地电阻值稳定等优点。本文详细介绍了接地电阻值的计算方法,以及当接地电阻值不满足技术要求时所采取的降阻措施,并通过实例计算某光伏电站未采用降阻措施时接地电阻值和采用两种不同的降阻措施后接地电阻值变化,并比较了其经济性。
Reasonable design of the grounding grid for photovoltaic power plants is an important measure to ensure the safe,stable,and reliable operation of photovoltaic power plants.An ideal grounding grid should have advantages such as low grounding resistance value,low comprehensive cost,long service life,good thermal stability,and stable grounding resistance value.This article provides a detailed introduction to the calculation method of grounding resistance value,as well as the resistance reduction measures taken when the grounding resistance value does not meet the technical requirements.Through an example,the grounding resistance value of a photovoltaic power station without resistance reduction measures and the changes in grounding resistance value after using two different resistance reduction measures are calculated,and their economic benefits are compared.
作者
牛强
周婉萍
赵振兴
杨玉鹏
NIU Qiang;ZHOU Wanping;ZHAO Zhenxing;YANG Yupeng(Longyuan(Beijing)Solar Engineering Technology Co.,Ltd.,100036,China)
出处
《风力发电》
2023年第6期61-64,共4页
Wind Power
关键词
接地方式
接地装置
接地电阻值
降阻措施
grounding method
grounding device
grounding resistance value
resistance reduction measures
