...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Electric power systems research >Selection of minimal tripping times for distance protection using fault trees with time dependencies
【24h】

Selection of minimal tripping times for distance protection using fault trees with time dependencies

机译：使用具有时间相关性的故障树选择最小跳闸时间以进行距离保护

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Correct coordination between protection relays is an essential requirement to maintain stability and integrity of electrical power systems. Time settings of protection relays have to be adapted to time characteristics of electrical power systems and time settings of other protections. In the paper, fault trees with time dependencies (FTTD) are used for selecting time delay settings of remote back-up distance protections. In FTTD, events and gates are characterized by time parameters, which are derived from time characteristics of protection devices and the inherent delays of protection equipment. Two case studies are presented. First, the coordination of protections for the simple transmission line composed of two identical sections is studied. Next, the transmission line that contains two sections of different lengths and transformer between them is analyzed. In both cases, formulae for time delays of protections are derived. According to calculations executed for the first case, our method gives time delays that often are significantly smaller than values suggested by generally recommended and accepted rules.
机译：保护继电器之间的正确协调是维持电力系统的稳定性和完整性的基本要求。保护继电器的时间设置必须适应电力系统的时间特性和其他保护的时间设置。在本文中，具有时间相关性的故障树（FTTD）用于选择远程备份距离保护的时间延迟设置。在FTTD中，事件和门的特征是时间参数，这些时间参数是从保护设备的时间特性和保护设备固有的延迟得出的。介绍了两个案例研究。首先，研究了由两个相同部分组成的简单传输线的保护协调。接下来，分析包含两个不同长度的部分和它们之间的变压器的传输线。在这两种情况下，都可以得出保护时间延迟的公式。根据针对第一种情况执行的计算，我们的方法所提供的时间延迟通常明显小于通常建议和接受的规则所建议的值。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号