Software and Hardware System of Monitoring High-Voltage Electric Equipment Based on the Analysis of Partial Discharge Characteristics

The reliability of the high-voltage electrical equipment insulation can significantly affect the equipment lifetime, taking into account the operating conditions and the stability of the power system. Insulation degradation can occur gradually and continuously even during normal operation. Thus, maintenance work must be carried out in a timely manner in order to prevent the threat of equipment damage and limitation of the supply of electrical and thermal energy to the consumers, for example, due to the violation of the electrical equipment insulation characteristics, which often leads to short circuits and accidents in the power system. Currently, monitoring systems used in the operation of power equipment are aimed at early detection of damages. At digital substations of a new generation using SF6 equipment, the partial discharge method is one of the main ones for solving this problem.) Insulation degradation may occur gradually and continuously even during normal use. Therefore, maintenance work must be carried out in a timely manner to prevent equipment failure. To register and analyze the statistical parameters of partial discharges, a hardware-software system (HSS) based on the National Instruments Compact RIO (NI Compact RIO) equipment and the LabVIEW graphical programming system is proposed. HSS can be used to diagnostic the state of power transformers and autotransformers.