油浸式变压器冷却系统节能运行控制策略研究
高荣贵1,冯智倩1,余鹏1,赵蓉1,秦鑫1,王珊珊2
1 太原供电公司,山西 太原 030012;2 国网电力科学研究院,湖北 武汉 430074
摘 要:针对现有冷却器控制方式的不足,基于热电类比理论建立了变压器热路模型,结合环境温度及冷却方式变化时模型参数的不同求取方法,制定了高效节能的冷却器运行策略。在准确计算变压器热点温度的基础上,借助高可靠性、高精度的光纤温度传感器来获得变压器端部油温,并结合冷却器节能运行控制策略,有效避免了冷却器冷却能力过剩现象,保证了变压器安全、稳定、经济运行。
关键词:油浸式变压器;热电类比法;节能环保;热点温度;冷却系统
中图分类号:TM411 文献标识码:A 文章编号:1007-3175(2014)08-0034-04
Study on Energy Saving Operation Control Strategy of Oil-Immersed Transformer Cooling System
GAO Rong-gui1, FENG Zhi-qian1, YU Peng1, ZHAO Rong1, QIN Xin1, WANG Shan-shan2
1 Taiyuan Power Supply Company, Taiyuan 030012, China;
2 State Grid Electric Power Research Institute, Wuhan 430074, China
Abstract: Aiming at insufficiency of the existing cooler control method, this paper built up a transformer thermal route model based on the thermoelectricity analogy method. Combined with different obtaining method in changes of environment temperature and cooling means, highly effective energy saving cooler operation strategy was made. On the basis of correct transformer thermal point temperature calculation, the fiber temperature sensor with high reliability and high accuracy could obtain transformer’s end part oil temperature value. Combined with cooler energy saving operation strategy, the system has effectively avoided cooler’s cooling capacity surplus situation, to have ensured transformer in safe, stable and economic operation.
Key words: oil-immersed transformer; thermoelectricity analogy method; energy saving and environmental protection; thermal point temperature; cooling system
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