In complex power consumption environments

asymmetric loads have become an important factor affecting the power measurement accuracy of three-phase four-wire system. This paper studies the genesis mechanism of measurement errors under asymmetric load conditions

analyzes the key impact links of the measurement systems of three-phase four-wire system in current imbalance

zero-sequence current interference and other scenarios

proposes an optimization method based on model correction and algorithm compensation

designs a simulation verification model under typical load conditions

and discusses the real-time performance and accuracy of the error compensation mechanism. The research results can provide technical support for smart meter design and power metering in an asymmetric load environment.