研究基于多传感器融合的光伏电站集电线故障检测,提升光伏电站安全性.采用多传感器融合方法通过比较光伏电站集电线局放信号到达传感器时间差,实现光伏电站集电线局部放电信号采集;采用能量阈值法去除采集局部放电信号中的白噪声,提取出有价值光伏电站集电线局部放电脉冲信号;利用多源信息融合技术融合有价值光伏电站集电线局部放电脉冲信号,利用融合后信号计算光伏电站集电线停电损失,确定线路是否发生故障.实验表明:该方法数据融合性能较好,可实现光伏电站集电线故障检测,有助于提升光伏电站安全性.
Research on fault detection of collector lines in photovoltaic power plants based on multi-sensor fusion to improve the safety of photovoltaic power plants.Multi sensor fusion method is adopted to collect partial discharge signal of collector wire of photovoltaic power station by comparing the time difference of partial discharge signal arriving at the sensor;The white noise in the collected partial discharge signal is removed by the energy threshold method,and the valuable partial discharge pulse signal of the collector line of the photovoltaic power station is extracted;Use the multi-source information fusion technology to fuse the partial discharge pulse signal of the collector line of the valuable photovoltaic power station,use the fused signal to calculate the outage loss of the collector line of the photovoltaic power station,and determine whether the line has failed.The experiment shows that this method has good data fusion performance and can achieve fault detection of collector lines in photovoltaic power plants,which helps to improve the safety of photovoltaic power plants.