Relation to the grid metering economic accounting, related to power generation and supply, economic interests

Power system harmonic power quality indicator is one of the important parameters, with the vigorous development of power electronics technology and wide application, more and more non-linear loads connected to the grid, the grid harmonic content  Air circuit breaker , resulting in most of the measuring instrument measurement data is not accurate, give energy metering trouble. Relation to the grid metering economic accounting, related to power generation, electricity supply,  power transformers  economic interests. Meter is a core part of energy metering and basic measuring tools, and its measurement accuracy is directly related to energy metering accuracy. Therefore, in-depth systematic study of harmonics on the power meter and power measurement of the impact is significant.