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| Load test analysis of power supply line in traction substation |
| LUO Tong, LIU Weihao |
| Heyuan Power Supply Bureau, Guangdong Power Grid Co., Ltd, Heyuan, Guangdong 517000 |
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Abstract Transformers in traction substations mainly use V/V type, V/X type and Scott type wiring methods. The power and power angle of the line on the power supply side are different due to the different wiring methods of the traction transformer, which causes certain difficulties in the interval load test of the new traction power supply line. Therefore, this article analyzes the load test methods of traction power supply lines under different traction transformer wiring modes to provide a basis for judging the polarity of current transformer or voltage transformer loops. Applying the analysis methods and conclusions of this article to carry out a load test on multiple traction power supply lines verifies the accuracy of the analysis and conclusions of this article.
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Received: 06 December 2021
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2022, Vol. 23 
