电能质量监测装置校验信号实现新方法

提出基于相似度原理异构等效的电能质量监测装置校验信号实现的新方法,通过将监测装置采样信号序列与标准源输出信号序列进行时序平移相似度计算,分析校验信号同步方法和构成;研究异构校验信号输出实现,给出监测装置整点采样和随机采样时异构校验信号输出实现方法。开发了电能质量监测装置校验信号实现软件系统,对监测装置精度进行校准验证,校验结果表明运用此方法能彻底解决标准源输出信号序列与监测装置采样序列无法同步、相邻校准信号之间存在相互干扰等问题,有效的提高了对装置精度检验的准确度和可靠性,对提高电网和用户电能质量监测水平,以及电能质量监测装置技术提升和产业发展起到了积极的促进作用。

A New Method of Calibration Signal Implementation for Power Quality Monitoring Devices

A new method of calibration signal implementation for power quality monitoring devices based on heterogeneous equivalence of similarity theory is proposed in the paper. Timing-shift similarity calculation between the sampling signal sequence of the monitoring device and the output signal sequence of standard source is carried out, to analyze calibration signal synchronization method and its composition. Output method of heterogeneous calibration signal in the case of the whole point sampling and random sampling of the monitoring device is studied. In addition, the calibration software about power quality monitoring devices is developed to measure accuracy of the devices, and the calibration results show that the questions of asynchronous between the sampling signal of the monitoring device and the output signal of standard source, and mutual interference between adjacent calibration signals are completely solved. This greatly improves the accuracy and reliability of detecting the monitoring device, improves the level of monitoring grid and user power quality, and has played a positive role in upgrading and promoting the technology and industrial development of power quality monitoring devices.