1.China Electric Power Research Institute (Nanjing), Nanjing 210003, China;2.National Electric Power Dispatching and Control Center, State Grid Corporation of China, Beijing 100031, China;3.State Grid Jiangsu Electric Power Co., Ltd., Nanjing 210024, China
According to the wide-frequency characteristics of electric variables in the power electronized power grid, this paper designs a multi-functional wide-frequency measurement device. Based on high-speed synchronous sampling, the device is optimized to integrate such functions as wide-frequency oscillation detection, synchrophasor measurement and wide-frequency (inter)harmonics measurement. The algorithm models of transient variables, phasors and effective values are synthetically used to improve the monitoring and detection ability of wide-frequency electric variables with different signal structures. Considering both stable and non-stable conditions, the comprehensive detection of power frequency, non-power frequency components and oscillation power in the range of 0~2 500 Hz is realized, which provides targeted data for the research of generation mechanism, propagation path, analysis and control method of wide-frequency electric variables. The multi-functional wide-frequency measurement device realized in this paper has passed the test and been applied in pilot projects.
This work is supported by State Grid Corporation of China (No. SGLNJZ00YJJS1800187).
|||WU Yanping, YAO Jianguo, CHANG Naichao, et al. Design and Implementation of Multi-functional Wide-frequency Measurement Device[J]. Automation of Electric Power Systems,2020,44(20):136-141. DOI:10.7500/AEPS20191126004|