基于FFT频谱分析的便携式ADPSS事故判断

Analysis of Portable ADPSS Accident Judgment Based on FFT Spectrum

为提高电网继电保护设备的仿真测试的真实性,解决将闭环测试应用到现场的局限性难题,新疆电力公司同中国电科院联合开发研制一套便携式数字仿真系统(ADPSS)实时仿真装置。通过对软硬件的核心组成、装置原理及功能的介绍,通过现场仿真试验提取故障信号,利用基于快速傅里叶变换(FFT)的分析方法对试验信号和实际发生的故障信号进行频谱特性综合性分析,结果显示满足实际仿真应用和事故判断的要求,该分析成果为今后装置推广应用奠定基础。

To improve the authenticity of simulation test for relay protection equipment in power grid, and reduce the limitation of applying closed loop test to the field, a set of portable digital simulation system（ADPSS） real-time simulation device was jointly developed by Xinjiang power company and Chinese electric power research institute. In this paper, the principle and function,the core component of the hardware and software of the device were introduced. To analyze the characteristics of the signal spectrum of the test signal and actual fault signal comprehensively,based on fast Fourier transform（FFT）, the field simulation test and extract the fault signal were done. The results show that ADPSS can meet the requirements of actual simulation applications and accident judgment. This results could be the basis for future application and application of the device.