Abstract

This article explores the application of Standard ZET-algorithm for gaps filling in Synchronized Phasor Measurement data assets received from Wide Area Measurement Systems. In spite of Synchronized Phasor Measurement data assets apparent advantages, they have gaps affecting the accuracy of solving power engineering tasks. Authors analysed the reasons of gap occurrence in data assets, provided experiments with voltage and current data assets and collected the key points about application of Standard ZET-algorithm.

Highlights

  • Synchronized Phasor Measurement (SPM) data assets received from Wide Area Measurement Systems (WAMS) are in widespread use for solving technological tasks in power systems [1]

  • SPM data assets have unquestionable advantages: a) obtained from one node, they allow calculating the voltage of neighbouring nodes by load current values of a line, increased power system observability; b) they give an opportunity to control the phase imbalance, as the signal, when equipment tend to accident-caused failure [2]; c) high discreteness of regime parameters provides the possibility to analyse electromechanical transients for centralized and local automatics according to type of stability [3]

  • The reasons of gap occurrence in SPM data assets In order to understand the nature of gaps, we analyzed the collecting process of SPM data assets received from WAMS (Figure 1)

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Summary

Introduction

Synchronized Phasor Measurement (SPM) data assets received from Wide Area Measurement Systems (WAMS) are in widespread use for solving technological tasks in power systems [1]. These tasks cover the operational dispatch management and automatic emergency control: a) improving accuracy of power system state estimation [2]; b) on-line identifying a point of power system emergency separation into parts and their synchronization; c) monitoring margin of power system stability; d) choosing volume of action adjustments for emergency response.

Published under licence by IOP Publishing Ltd
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