一种新的高压线路保护稳定破坏检测元件

LIU Kai; LI Xiaobin; SUONAN Jiale; ZHENG Xiaohui; DUAN Jiandong; PAN Zhongmei

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一种新的高压线路保护稳定破坏检测元件

更新时间：2025-08-13

- 一种新的高压线路保护稳定破坏检测元件
- Automation of Electric Power Systems Vol. 33, Issue 19, Pages: 56-60(2009)
- 作者机构：
  
  1. 西安交通大学电气工程学院,陕西省,西安市,710049
  2. 烟台东方电子信息产业股份有限公司,山东省,烟台市,264001
  3. 四川理工学院自动化与电子信息学院,四川省,自贡市,643000
  4. 西安理工大学自动化学院,陕西省,西安市,710048
- 作者简介：
- 基金信息：
- DOI：
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- Published：2009
- 稿件说明：
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LIU Kai, LI Xiaobin, SUONAN Jiale, et al. [J]. Automation of electric power systems, 2009, 33(19): 56-60.
DOI：

LIU Kai, LI Xiaobin, SUONAN Jiale, et al. [J]. Automation of electric power systems, 2009, 33(19): 56-60. DOI：

摘要

提出了一种新的线路保护稳定破坏检测元件。利用保护安装处的电压、电流和线路阻抗参数，计算出线路对侧母线处的电压。根据保护安装处的电压和计算的线路对侧母线电压之间的相角差，来判断系统是否失去稳定。该元件反映线路两侧电源之间的电势角差，能够准确判断系统是否失稳，及时闭锁距离保护。该元件较直观，实现简单，可以与振荡周期自适应。动模数据仿真验证了新原理的有效性。

Abstract

A novel power system instability detecting element for high voltage line protection relay is presented. Through the voltage and current at location of the protective relay and the line impedance parameter， the voltage of another terminal of the line can be calculated.The power system stability can be judged from the phasor angle difference between sampled voltage and the calculated voltage so as to lock distance protection on time.The instability detecting element proposed in the paper may satisfy such a characteristic. This instability detecting element is also self-adaptive to the swing period， which needs not to add setting item to the relay， and can be easily implemented.

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