The Research Of Wireless Temperature Measurement Technology For10kV High Voltage Switchgear

The High Voltage Switchgear, as an important equipment of the safety operation for the electric power system, its internal conductive joint overheating could cause the damage of the electrical equipment, and even fire or more serious power supply accident. Therefore, the implementation of the HVS on-line monitoring has been an important research subject for the power system electrical equipments1safety operation.The author accesses to a large number of relevant literature to understand the existing switchgear contact temperature measurement method, through all aspects of the comprehensive comparison, this paper put forward a design for online temperature monitoring that based onATmegal6microcontroller to realize ceontrol, using the bluetooth module to realize the wireless communication and adopting single wire digital thermometer DS18B20to measure temperature.The system is divided into two parts of the high-voltage side and low-voltage side, the circuit of low-voltage side completes a6-way contact temperature acquisition by DS18B20digital temperature sensor, and uses the CT transformer high-voltage electrical technology to work out the problem of power supply for high-voltage side circuit, the circuit of low-voltage side accomplishes temperature data processing, Low-voltage side will receive the temperature signal for demodulation and frame processing time-share solution, with over-temperature alarm and real-time display function, with high-temperature alarm and over-temperature trip function, for online monitoring purposes. Data is transmitted by means of Bluetooth communication between them.Finally, the paper studies HVS contact temperature online monitoring system with accurate measurement data, high reliability, good insulation properties, the system can adapt to the requirements well, it can be widely used in the temperature measurement of10kV switch assemblies.