| 对SEL-351A继电器方向元件的认识 |
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| 引用本文： | 沈园云.对SEL-351A继电器方向元件的认识[J].上海轻工业高等专科学校学报,2010(1):52-54. |
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| 作者姓名： | 沈园云 |
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| 作者单位： | 上海应翔建筑设计有限公司,上海200235 |
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| 摘 要： | 通过对SEL-351A的零（负）序方向元件分别在接地方向、相间故障方向及三相短路故障方向的理论分析,结合电测试数据阐述了对SEL-351A继电器方向元件的认识。
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| 关 键 词： | SEL-351A继电器 方向元件 阻抗门坎值 零序电压极化 负序电压极化 |
The Understanding of direction elements of SEL-351A relays |
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| SHEN Yuan-yun.The Understanding of direction elements of SEL-351A relays[J].Journal of Shanghai Institute of Technology(Natural Science),2010(1):52-54. |
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| Authors: | SHEN Yuan-yun |
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| Affiliation: | SHEN Yuan-yun(Shanghai Yingxiang Architectural Dedign Co.Ltd,Shanghai 200235,China) |
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| Abstract: | Combined with statistics from the electronic test,the cognition towards the direction elements of SEL-351A relays has been theoretically analyzed via their performances in zero（opposite） direction of SEL-351A in directional earth-fault,phase to phase fault and three phase short-circuit respectively. |
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| Keywords: | SEL-351A relays direction element impedance value voltage polarization in zero（opposite） direction |
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