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Research on the Some Questions for Large Transformer Protection

Author: ZuoYuTao
Tutor: LiuJianFei；ZhuBingZuo
School: North China Electric Power University (Beijing)
Course: Electrical Engineering
Keywords: Differential protection Magnetizing inrush And inrush current Non-power protection Backup protection Standardized design
CLC: TM407
Type: Master's thesis
Year: 2008
Downloads: 285
Quote: 1
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Abstract


The transformer is the important equipment in the power grid , and its operational status of the safe operation of the entire power system plays a decisive role in key . Transformer protection in the practical application of the existing problems and find the response measures , is of great theoretical and practical significance . This paper first discusses the magnetizing inrush and transformer differential protection applications should inrush current misoperation , considering the safety and reliability of the transformer differential protection based on the the waveform principle of \method , run the practice shows that this method is effective ; analysis and inrush current characteristics as well as its impact on the differential protection . Secondly, the status quo for the correct operation of the low rate of non- electricity protection site analysis of the reasons for the malfunction and specific non-power protection anti-jamming measures . The paper also discusses the different voltage levels , transformer backup protection configuration scheme ; Finally, the paper combines the latest component protection of the State Grid Corporation of standardized design requirements, the voltage level of transformer protection standard design .

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CLC: > Industrial Technology > Electrotechnical > Transformers, converters and reactors > General issues > Maintenance,repair
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