Online Monitoring System Of Cable Joint Temperature Based On Modern Information Technology

For a long time,the cable head overheating fault has been troubling the operation and management of power equipment.Large quantities and various types of cable head are widely distributed in the power grid,so the management is very difficult especially in poor operating environment.To solve the problem of observation limitation,hard maintenance,low degree of safety and low measurement accuracy of current cable joint temperature measurement system.This paper puts forward of CESM-6010 series cable head wireless temperature measurement system,and its system constitution,principle and application are descripted.The main work is as follows.Firstly,design embedded temperature sensor: micro-power temperature sensor chip and wireless communication chip are into the relevant electrical parts of monitoring temperature(insulation plug)through the epoxy casting process prefabricated.Make use of the space electromagnetic field and potential difference in insulating components as voltage source,temperature parameters are sent to temperature collector through the ZigBee 2.4G wireless network.Secondly,design the wireless temperature collector: The wireless temperature collector can receive,upload,manage and transmit the data of a certain number of wireless temperature sensors within certain range.The temperature signals of the relevant main circuit connection points can be given visible display or alarm,or upload the received data to other management systems via an appropriate communication interface.In the end,design cable accessories temperature background expert system.The wireless temperature collector is accompanied with RS485 communication interfaces,cable accessories online temperature monitoring information can be integrated into the power Supervisory Control And Data Acquisition(SCADA)system through the appropriate communication network and remote terminal equipment(RTU).Suitable display interface is designed in the SCADA system to monitor and analysis cable attachment the temperature information.