地铁地下变电站主变压器室温度控制仿真研究
王浩1甘露2徐琳3杨浩然3
Simulation Research on Temperature Control of Metro Underground Substation Main Transformer Room
WANG Hao1GAN Lu2XU Lin3YANG Haoran3
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作者信息:1.山东电力工程咨询院有限公司，250013，济南
2.山东国电投能源营销有限公司，250002，济南
3.山东建筑大学热能工程学院，250101，济南
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Affiliation:1.Shandong Electric Power Engineering Consulting Institution Co., Ltd., 250013, Jinan, China
2.State Power Investment Corporation Shandong Energy Marketing Co., Ltd., 250002, Jinan, China
3.School of Thermal Engineering, Shandong Jianzhu University, 250101, Jinan, China
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关键词:
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Key words:
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DOI:10.16037/j.1007-869x.2024.07.040
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中图分类号/CLCN:U231.8
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栏目/Col:研究报告
摘要:
［目的］在地下变电站内的变压器工作时会产生巨大的热量。若热量不能及时被排出，将会产生主变压器超温等问题，甚至会发生设备故障或火灾事故。因此，需对地铁变电站主变压器室的温度控制进行研究。［方法］以济南轨道交通3号线110kV地下变电站(齐川站)为例，通过理论分析和数值模拟，考虑机械排风量、变压器放热量及室外环境温度的影响，对主变压器室内的温度控制进行研究；分析8种不同通风工况下，主变压器室内的温度演变规律。［结果及结论］以理论计算值设置机械排风量，可以有效排除变压器产生的热量，且理论计算风量偏保守。现有设计风机可有效排除变压器产生的热量，最大可排除变压器3倍发热量。在室外环境温度为40℃的不利情况下，现有设计风机仍可有效排除变压器产生的热量，实现温度控制目标。
Abstracts:
［Objective］ Huge heat is generated during underground substation transformer operation. Failure to promptly dissipate this heat can lead to problems such as transformer overheating, equipment malfunctions, and even fire accidents. Therefore, it is necessary to study the temperature control of transformer rooms in metro substations. ［Method］ Taking the 110 kV underground substation (Qichuan Station) of Jinan Rail Transit Line 3 as example, considering the influence of mechanical exhaust air volume, transformer heat dissipation, and outdoor ambient temperature, theoretical analysis and numerical simulation are conducted to study the temperature control in the transformer room. The temperature evolution law in the main transformer room under 8 different ventilation conditions is analyzed. ［Result & Conclusion］ Setting the mechanical exhaust air volume based on theoretical calculations can effectively dissipate the heat generated by the transformer, and the theoretically calculated air volume tends to be conservative. The existing design fans can effectively discharge the heat generated by the transformer, with a maximum capacity to dissipate three times the generated heat. Even under adverse conditions with an outdoor ambient temperature of 40 ℃, the existing design fans can still effectively dissipate the heat generated by the transformer, achieving the temperature control objectives.
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