直流电源智能故障模拟与检测系统的研究

Research on intelligent fault simulation and test system of DC power

针对电力系统直流电源告警参数及常见故障,研制了基于集中控制方式的直流电源智能故障模拟与检测系统。提出了系统各种故障模拟参数的测试依据,介绍了多功能直流接地故障模拟单元的电路拓扑图及功能,阐述了充电故障模拟与检测单元的测试硬件结构及器件选取方法。根据检测实验流程,编制了上位机控制软件程序,介绍了软件通讯握手协议及检测流程图。应用该系统完成了河北南部电网直流绝缘监测装置及充电装置的入网测试,证实了系统的实用性和可靠性。

Focus on power system DC power supply alarm parameters and common failures, the intelligent fault simulation and test system of DC power based on the centralized control mode was developed. The test basis of fault simulation parameters of system was put forward. The circuit topology and function of multi-function DC grounding fault simulation unit were introduced. The charge fault simulation and selection method test hardware structure and components of testing unit were discussed. According to the test process, the PC control software program was made. The communication handshake protocol and test software flow chart were introduced. The system was applied to complete the test experiment of southern Hebei power grid net DC insulation monitoring device and charge equipment, confirming the practicability and reliability of the system.