±800 kV换流站空心平波电抗器温升控制措施研究
王楠，刘成柱
（北京电力设备总厂有限公司，北京 102401）
摘 要：为改善干式空心电抗器各包封层的热点温升分布情况，对已运行的电抗器实测热点温升分布进行调研，归纳出一套用于电抗器设计的热点温升散热系数，通过建模仿真、真型电抗器试验进行验证，并将设计温升、仿真温升、试验温升进行对比分析，确定了仿真温升和试验温升的拟合度。基于散热系数对电抗器温升的预判能力，提出通过优化各层电阻分布、改善各层通风散热条件等方式改善温升分布均匀性，保证了电抗器的安全稳定运行。
关键词：±800 kV 特高压直流输电；平波电抗器；热点温升；散热系数
中图分类号：TM478 文献标识码：B 文章编号：1007-3175(2017)02-0047-05
Temperature Rise Control Measure Study on Air-Core Smoothing Reactor in ±800 kV Convertor Station
WANG Nan, LIU Cheng-zhu
（Beijing Power Equipment Group Co., Ltd, Beijing 102401, China）
Abstract: In order to improve the hot-spot temperature rise distribution situation of dry-type air-core reactor each package seal layer, this paper investigated and surveyed the operational reactor measured hot-spot temperature rise distribution, summarized a set of hot-spot temperature rise dissipation coefficient for reactor design. Via modeling, simulation and actual reactor test, this paper carried out contrastive analysis for design temperature rise, simulation temperature rise, testing temperature rise to determine the degree of fitting of simulation temperature rise and testing temperature rise. Based on the pre-judgment of dissipation coefficient for the reactor temperature rise, this paper presented a way to improve the spray deposition uniformity of temperature rise by the means of optimizing each layer resistance distribution and improving each layer ventilation and heat dissipation, which guarantees the safe and stable operation of reactors.
Key words: ±800 kV ultra high voltage direct current; smoothing reactor; hot-spot temperature rise; dissipation coefficient
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