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| 大型发电机变压器组保护的新原理 | |
| 引用本文： | 沈芳,韩玮,沈全荣.大型发电机变压器组保护的新原理[J].华中电力,2005,18(2):30-32,35. |
| 作者姓名： | 沈芳 韩玮 沈全荣 |
| 作者单位： | 1. 华东电力设计院,上海,200063 2. 中南电力设计院,湖北,武汉,430071 3. 南京南瑞继保电气有限公司,江苏,南京,211100 |
| 摘 要： | 介绍了大型发电机变压器组装置的几项保护新原理，包括发电机工频变化量比率差动、变斜率比率差动、异步法TA饱和判别、电流比率制动匝间保护等。这些保护新原理的应用，在保证高可靠性的前提下，提高了内部故障保护的灵敏度，完善了保护方案。 |
| 关 键 词： | 发电机变压器组 比率差动 变斜率 工频变化量 异步法TA饱和判别 |
| 文章编号： | 1006-6519(2005)02-0030-03 |
New Principles of Digital Protection for Generator Transformer Unit |
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| SHEN Fang,HAN Wei,SHEN Quan-rong.New Principles of Digital Protection for Generator Transformer Unit[J].Central China Electric Power,2005,18(2):30-32,35. | |
| Authors: | SHEN Fang HAN Wei SHEN Quan-rong |
| Affiliation: | SHEN Fang1,HAN Wei2,SHEN Quan-rong3 |
| Abstract: | This article introduces the new principles of digital proctection for generator transformer unit,including deviation of power frequency (DPFC) percentage differential relay, variable slope percentage differential relay, asynchronous method of TA saturation recognition, current percentage restricted stator inter-turn relay, etc. The application of these new principles improves the sensitivity and reliability of internal fault protection, and perfects the scheme of generator transformer protection. |
| Keywords: | generator transformer unit percentage differential protection variable slope deviation of power frequency (DPFC) asynchronous method of TA saturation |
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