Design of the Wide-Frequency Measurement Algorithm Based on Unified Sampling

This article addresses the problem of widespread harmonic frequency in the power grid caused by extensive integration of new energy sources into the new power system, which cannot be accurately measured by existing measurement and control equipment such as PMU. The article comprehensively applies transient quantities, phasors, effective values, and other algorithm models to design a wide-frequency measurement algorithm that supports cross-platform integration and deployment. The algorithm achieves unified measurement of power frequency, non-power frequency components, and oscillating power in the range of 0~2500Hz, enhances the detection capability of measuring devices for wide-frequency electrical quantities with different signal structures, and is deployed in multiple new energy power stations.