济南轨道交通１号线供电系统主变压器开关保护动作跳闸故障原因分析及改进措施
赵玉明1马磊2,3
Causes for Switch Protection Action Tripping Fault of Jinan Rail Transit Line 1 Power Supply System Main Transformer and Improvement Measures
ZHAO YumingMA Lei
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作者信息:1.济南轨道交通集团有限公司， 250001， 济南
2.西南交通大学国际教育学院， 610031， 成都
3.西南交通大学国际合作与交流处(港澳台办公室)， 610031， 成都
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Affiliation:Jinan Rail Transit Group Co., Ltd., 250001, Ji’nan, China
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关键词:
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Key words:
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DOI:10.16037/j.1007-869x.2023.07.041
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中图分类号/CLCN:U231+.8
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栏目/Col:应用技术
摘要:
目的：济南城市轨道交通供电系统是在主变电所支撑供电方式下运行的。其供电电缆较长，电缆接地电容和主变压器漏感可能匹配谐波参数，会放大供电系统内的背景谐波而引发谐振。因此，需分析供电系统的谐波污染原因及改进措施。方法：以济南轨道交通1号线供电系统主变压器开关保护动作跳闸故障为例，对谐波谐振的原理与特性进行了阐述。结果及结论：分析得到主变压器开关保护动作跳闸故障的改进措施有差动保护技术、加强变压器控制、加强设备巡视等。
Abstracts:
Objective: Jinan urban rail transit power supply system operates by main substation power supply. The power cables in the system are relatively long, cable grounding capacitance and main transformer leakage inductance may match harmonic parameters, and amplify background harmonics within the power supply system and cause resonance. Therefore, it is necessary to analyze the causes of harmonic pollution in the power supply system and propose improvement measures. Method: Taking the case of main transformer switch protection action tripping fault in Jinan Metro Line 1 power supply system, the principles and characteristics of harmonic resonance are expounded.Result & Conclusion: The improvement measures obtained from analyzing the main transformer switch protection action tripping fault include differential protection technology, transformer control reinforcement, and equipment inspection enhancement.
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