A PMU Based Islanding Detection Scheme Immune to Additive Instrumentation Channel Errors

TL;DR

This paper introduces a new PMU-based islanding detection method using CUSPAD that is robust against instrumentation errors, outperforming traditional angle difference techniques in accuracy.

Contribution

A novel islanding detection scheme employing CUSPAD that is immune to additive instrumentation channel errors, enhancing detection reliability.

Findings

CUSPAD outperforms traditional methods under instrumentation errors

Robustness validated on 18-bus and IEEE 118-bus systems

Superior accuracy with wind energy penetration levels

Abstract

Traditional synchrophasor measurement-based islanding detection techniques have primarily relied on voltage angle measurements and/or their derivatives for successfully detecting islands. However, relatively high instrumentation channel errors associated with phasor measurement unit (PMU) data, can significantly degrade islanding detection accuracies. In this paper, a new islanding detection scheme employing cumulative sum of change in voltage phase angle difference (CUSPAD) is proposed, which is immune to additive instrumentation channel errors in the PMU measurements. The robustness of the proposed islanding detection algorithm is established through application to an 18-bus test system and the IEEE 118-bus system having different wind energy penetration levels. Comparative analysis of the accuracies of the proposed approach (CUSPAD) and the conventional angle difference (AD) approach prove the former's superior performance when additive instrumentation channel errors are present.