电力系统保护与控制2011，Vol.39Issue(16)：107-113,7.
采样值差动保护安全性及灵敏度的研究
Research on security and sensitivity of sampled-value differential protection
杨恒坤 1邓祥力 2王传启 3崔建铁 2尹项根3
作者信息
- 1. 东方电子集团有限公司,山东烟台264000
- 2. 华中科技大学电力安全与高效湖北省重点实验室,湖北武汉430074
- 3. 东方电子股份有限公司,山东烟台264000
- 折叠
摘要
Abstract
This paper studies the security and sensitivity of sampled-value differential protection algorithm (SDPA) for detecting transformer internal fault with mode restraint current. Under the most rigorous fault conditions for phase value differential relay, it analyzes and compares the security and sensitivity of detecting transformer internal fault for both traditional phase value differential protection algorithm (TDPA) and SDPAt and selects the reasonable R and S values for SDPA in the end. The angle of input signal meeting the action criteria in half power frequency cycle ranges from 90 to 121 . It is proved by a simplified simulation that the values have fine sensitivity and security for such operation condition of transformer as energizing, turn-to-tum faults, and out-zone faults. The S value determined can not only ensure safety but also ensure protective turn-to-tum fault sensitivity in the course of transformer energization.关键词
采样值差动保护/相量值差动保护/比率制动特性/励磁涌流/安全性/灵敏度Key words
sampled-value differential protection/ phase value differential protection) percentage restraint characteristic/ inrush currents security/ sensitivity分类
信息技术与安全科学引用本文复制引用
杨恒坤,邓祥力,王传启,崔建铁,尹项根..采样值差动保护安全性及灵敏度的研究[J].电力系统保护与控制,2011,39(16):107-113,7.
