Study of the transient current differential protection based on correlation analysis

Q1 Engineering

电网技术 Pub Date : 2002-10-06 DOI:10.1109/TDC.2002.1177583

Li Yan, Cheng De-shu, Yuan Rong-xiang, Yin Xiang-Geri, Zhang Zhe

引用次数: 5

Abstract

In this paper, the principle of the current correlation differential protection based on the correlation integration is analyzed first. The advantages of the correlation differential criterion are proved and the disadvantages are also pointed out. Aiming to the disadvantages of the correlation criterion, an improved scheme was proposed in the paper. The power system models of different structures using ATP program are built to simulate these criterion completely. Simulation studies show that the improved scheme not only preserves the advantages of correlation criterion, but also increases many new virtues such as better sensitivity and reliability, simple to understand, easy to give out setting values. Studies also show that the improved scheme is more reliable and very suitable for the protection of EHV/UHV transmission lines.

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基于相关分析的暂态电流差动保护研究

本文首先分析了基于相关积分的电流相关差动保护的原理。证明了相关微分判据的优点，同时也指出了其缺点。针对相关准则存在的不足，提出了一种改进方案。利用ATP程序建立了不同结构的电力系统模型，对这些准则进行了全面的仿真。仿真研究表明，改进后的方案不仅保留了相关准则的优点，而且增加了灵敏度和可靠性好、易于理解、设定值容易给出等优点。研究还表明，改进后的方案更加可靠，非常适合于对超高压/特高压输电线路的保护。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

电网技术 Engineering-Mechanical Engineering

CiteScore

7.30

自引率

0.00%

发文量

13735

期刊介绍： "Power System Technology" (monthly) was founded in 1957. It is a comprehensive academic journal in the field of energy and power, supervised and sponsored by the State Grid Corporation of China. It is published by the Power System Technology Magazine Co., Ltd. of the China Electric Power Research Institute. It is publicly distributed at home and abroad and is included in 12 famous domestic and foreign literature databases such as the Engineering Index (EI) and the National Chinese Core Journals. The purpose of "Power System Technology" is to serve the national innovation-driven development strategy, promote scientific and technological progress in my country's energy and power fields, and promote the application of new technologies and new products. "Power System Technology" has adhered to the publishing characteristics of combining "theoretical innovation with applied practice" for many years, and the scope of manuscript selection covers the fields of power generation, transmission, distribution, and electricity consumption.