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Commissioning Tests and Analysis of UHV Transformer Protection |
Su Chenyun |
Commissioning Institute of Hunan Electric Power Transmission and Transformation Construction Co., Ltd, Changsha 410000 |
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Abstract The 1000kV transformer of UHV substation is composed of the main transformer, the regulating transformer and compensated transformer; Because of its special structure, the protection of HUV Transformer is different from conventional transformer, and the problem of TA polarity change of the tap-changing windings caused by the change of transformer tap position must be resolved. The principle and scheme of UHV Transformer protection are introduced in this paper, and the TA polarity of the 1000kV transformer protector is debugged and analyzed; the test results prove that the TA polarity of HUV Transformer protector meets the need of on-site protection.
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Published: 10 October 2013
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