Automatic design for power frequency voltage withstand system

Power frequency voltage withstand system is the most effective way to test the electrical equipment. It is widely used in power system to test electrical equipment. It is designed and achieved by LabVIEW for intelligent control. The system uses virtual instrument programming LabVIEW 2015 platform to design interactive interface of human-computer. The system has the function of test type choosing, test parameter setting and real-time monitoring. It develops real-time(RT) data acquisition system, and completes the design of voltage and current signal conditioning circuit. In the meanwhile, multisim software is used to simulate the voltage and current signal conditioning circuit. Designing protection circuit of overpressure and overcurrent to improve system reliability, and the hardware control platform of electric control cabinet have been realized. Finally, through on-site debugging, it is proved that the system can complete standardized test procedure of 1000MVA coil withstand voltage test, and it can achieve the fast overvoltage, overload, and overcurrent protection. In this way, it can improve the operation efficiency and realize full use of energy.