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2015•International Journal of Engineering Practical ResearchRequires access

The Research Method of Prevention Transformer Differential Protection Misoperation Caused by the Sympathetic Inrush

Jingbin Yang, Dalong Fu, Youwen Tian, Yuwei Li

Open publisher page 8 citations

Abstract

Differential protection has been the main protection of transformer for a long time. The key and difficult problem is how to prevent the differential protection misoperation caused by inrush current. In recent years, there has been a lot of sympathetic inrush accidents caused by misoperation of transformer differential protection, affecting the safe and stable operation of power system. This paper established the simulation model of inrush current and, analysis of sympathetic inrush mechanism. At the same time, the fundamental reasons of differential protection misoperation caused by the sympathetic inrush were found out. And relevant methods and measures of preventing the sympathetic inrush misoperation in the transformer differential protection are put forward.

About this research paper

What this paper is about

Differential protection has been the main protection of transformer for a long time. The key and difficult problem is how to prevent the differential protection misoperation caused by inrush current. In recent years, there has been a lot of sympathetic inrush accidents caused by misoperation of transformer differential protection, affecting the safe and stable operation of power system. This paper established the simulation model of inrush current and, analysis of sympathetic inrush mechanism. At the same time, the fundamental reasons of differential protection misoperation caused by the sympathetic inrush were found out. And relevant methods and measures of preventing the sympathetic inrush misoperation in the transformer differential protection are put forward.

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OpenAlex reports 8 citations for this work. Citation counts describe recorded attention and do not establish research quality.

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Available abstract

Differential protection has been the main protection of transformer for a long time. The key and difficult problem is how to prevent the differential protection misoperation caused by inrush current. In recent years, there has been a lot of sympathetic inrush accidents caused by misoperation of transformer differential protection, affecting the safe and stable operation of power system. This paper established the simulation model of inrush current and, analysis of sympathetic inrush mechanism. At the same time, the fundamental reasons of differential protection misoperation caused by the sympathetic inrush were found out. And relevant methods and measures of preventing the sympathetic inrush misoperation in the transformer differential protection are put forward.

Key concepts: Inrush current, Differential protection, Transformer, Differential (mechanical device), Current transformer, Control theory (sociology), Computer science, Engineering

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