A method of synchronized data acquisition for power system transient signal

Abstract

This paper presents the methods for power system transient signal data acquisition, it includes two key technologies, the first is high-precision GPS-based remote synchronization for data acquisition, and the second is high-speed sampling and storage technologies. For the first problem, a single variable linear regression model is established for the GPS PPS signal and a UCT on-line estimation algorithm is developed to generate accurate and steady PPS (pulse per second). The sampling pulse which is synchronized with the corrected second pulse is generated simultaneously. For the second problem, a high-speed data acquisition system with a two level circulating storage scheme specialized for transient signal recording is developed in this paper.