摘要
Abstract
In the context of the rapid expansion of PV power station scale,fire accidents caused by rodent infestation in PV cable trays pose a serious threat to the safe and stable operation of PV power stations.This paper provides an in-depth analysis of the causes and hazards of rodent infestation in PV cable trays,and innovatively proposes installing a blocking wall every 30 m on the PV cable trays,combined with the use of discs and barbed wires.It analyzes the cable failure rate caused by rodent infestation in PV cable trays under different schemes,tests the fire spread time under different schemes through experiments,and finally introduces the construction key points and maintenance requirements for different schemes.The research results show that:1)When using the blocking wall scheme,barbed wire scheme,and disc scheme individually,the cable failure rate caused by rodent infestation in PV cable trays after 12 months is 25.4%,32.7%,and 33.5%,respectively.However,after adopting the combined scheme of"blocking wall+barbed wire+disc",the cable failure rate caused by rodent infestation in PV cable trays decreased from 63.8%in January to 5.0%in December,a decrease of 92.2%.It can be seen that the combined scheme can complement each other's strengths and achieve better results.2)Without blocking walls,the fire can spread to the entire PV cable tray within 12 min.However,after installing a blocking wall every 30 m or so,the fire takes 60 min to spread to a distance of 100 m,with the overall spread speed reduced by more than 80%.3)By adopting a synergistic approach of physical barriers(blocking walls)and anti-climbing measures(barbed wires,discs),it is possible to prevent rodents from entering PV cable trays from the root.4)In practical applications,strictly following the construction key points and carrying out regular maintenance work can ensure that protective measures remain effective over the long term,providing strong guarantees for the safe and stable operation of PV power stations.关键词
光伏电站/光伏电缆桥架/鼠患/封堵墙/倒刺/圆盘/防火Key words
PV power stations/PV cable tray/rodent infestation/sealing wall/barbed wire/disc/fire prevention分类
信息技术与安全科学
