Development of On-line Monitoring Equipment of Medium Voltage Switchgear
会议名称：《2007 8th International Conference on Electronic Measurement & Instruments（ICEMI’2007）》
会议日期：2007年
学科分类：0810[工学-信息与通信工程] 080801[工学-电机与电器] 0808[工学-电气工程] 08[工学] 080401[工学-精密仪器及机械] 0804[工学-仪器科学与技术] 080402[工学-测试计量技术及仪器] 0835[工学-软件工程] 081002[工学-信号与信息处理]
关 键 词：Switchgear on-line monitor dual-CPU sensor restraint of EMI
摘 要：In this paper, a set of on-line monitoring equipment of medium voltage switchgear is introduced, the structure of dual-CPU is adopted, on-line monitoring of the temperature of bus-bar with self-made infrared temperature sensor, on-line monitoring of the temperature rise of CT/PT with thermocouple of T type, on-line monitoring of leakage current of insulator bushing to reflect its characteristic of insulation, monitoring the arc fault in switchgear with self-made arc sensor, real-time on-line monitoring of multi-parameters comes true. Two sets of power are used to supply the circuits insulated respectively, and the measure of restraint of EMI in PCB design is implemented and so on, the equipment can work normally in the switchgear where the electro magnetic interference is serious.