| 摘要: |
| 变压器差动保护电流相位调整通常采用Y→△变换 ,在单相故障时灵敏度低于相间短路与三相短路灵敏度。分析了各种电流相位调整方法在单相接地时的灵敏度 ,证明△→Y变换在单相接地时灵敏度最高 |
| 关键词: 相位调整 单相接地 差动保护 |
| DOI：10.7667/j.issn.1674-3415.2003.01.008 |
| 分类号:TM764;TP182 |
| 基金项目: |
|
| A distributed power system fault diagnosis system based on recorded fault data |
|
DU Yi 1 ZHANG Pei chao 1 YU Wei yong 1 NIE Yu ben 2
|
| Abstract: |
| This paper proposes a progressive fault diagnosis expert system based on recorded fault data.It is composed of two parts:substation system diagnoses the fault reason and fault phase,then upload the brief report to the mater station system which integrates several substation reports,diagnoses the fault deeply and gives an analysis of the operation of protection system and related equipment.The system gains fault information by the recorded fault waves?SOE and protector events,adopts the CLIPS based fault diagnosis expert system engine,so it can diagnose the fault accurately and quickly and relieve the burden of operators. |
| Key words: power system,fault diagnosis,distributed system,expert system |
