胡晓斌,张捷,薛桅.变电站电缆通道多参量采集和预警技术研究[J].电测与仪表,2023,60(10):161-165. Hu Xiaobin,Zhang Jie,Xue Wei.Research on multi parameter acquisition and early warning technology of substation cable channel[J].Electrical Measurement & Instrumentation,2023,60(10):161-165.
变电站电缆通道多参量采集和预警技术研究
Research on multi parameter acquisition and early warning technology of substation cable channel
In view of the increasing number of cable channels in substation and the large number of cables distributed, the fault of a certain line will bring great security risks.In this paper, a design scheme of multi parameter acquisition and early warning system for cable channel in substation is proposed, focusing on the temperature field and current carrying capacity of power cable.Through the finite element analysis software, the geometric model of 10kV single core cable four circuit standard laying cable trench is established, and the steady-state ampacity is calculated by secant method.The temperature field and current carrying capacity under different working conditions are analyzed by simulation.The results show that for on-line cable temperature monitoring, only the cable with the highest temperature is needed to be monitored, and if the cable laying density is too high, the current carrying capacity of the cable will decrease.The research provides some reference for the development of multi parameter acquisition and early warning technology of substation cable channel in China.
