Line Outage Detection and Localization via Synchrophasor Measurement

TL;DR

This paper proposes a new method for detecting and locating transmission line outages using synchrophasor measurements, leveraging high-resolution data for quick system response without prior system knowledge.

Contribution

It introduces a novel outage detection and localization approach that uses frequency and power change data from synchrophasors, eliminating the need for pre-knowledge of the system.

Findings

Effective outage detection demonstrated in simulations

Accurate localization achieved without system pre-knowledge

Method leverages high-resolution synchrophasor data

Abstract

Since transmission lines are crucial links in the power system, one line outage event may bring about interruption or even cascading failure of the power system. If a quick and accurate line outage detection and localization can be achieved, the system operator can take necessary actions in time to mitigate the negative impact. Therefore, the objective of this paper is to study a method for line outage detection and localization via synchrophasor measurements. The density of deployed phasor measurement units (PMUs) is increasing recently, which greatly improves the visibility of the power grid. Taking advantage of the high-resolution synchrophasor data, the proposed method utilizes frequency measurement for line outage detection and power change for localization. The procedure of the proposed method is given. Compared with conventional methods, it does not require the pre-knowledge on the system. Simulation study validates the effectiveness of the proposed method.