With the rapid construction of a new-type power system based on new energy, in order to solve the problem of large voltage fluctuations and strong randomness caused by new energy access to the grid, a new energy access-oriented electric energy measurement is proposed by optimizing the software and hardware method. By using the optimized design of domestic zero-flux transformers, operational amplifiers and high-precision analog-to-digital conversion chips, the hardware solution of the metering module is constructed. A high-precision phase compensation method based on the combination of interpolation and point shifting is used to improve the synchronization of current and voltage signals. A power compensation method based on data fitting is studied to improve the accuracy of electricity metering. The effectiveness of the proposed method is verified by setting different experimental conditions. The results show that the method achieves high measurement accuracy, whici is better than the technical requirment of active power accuracy of 0.2S.
王永贵,刘柱,黄吕超,等. 基于软硬件协同优化的高精度计量方法[J]. 科学技术与工程, 2022, 22(25): 11062-11067.
Wang Yonggui, Liu Zhu, Huang Lüchao, et al. Research on High-precision Metering Method Based on Software and Hardware Collaborative Optimization[J]. Science Technology and Engineering,2022,22(25):11062-11067.