±800 kV換流站空心平波電抗器溫升控制措施研究
王楠，劉成柱
（北京電力設備總廠有限公司，北京 102401）
摘 要：為改善干式空心電抗器各包封層的熱點溫升分布情況，對已運行的電抗器實測熱點溫升分布進行調研，歸納出一套用于電抗器設計的熱點溫升散熱系數，通過建模仿真、真型電抗器試驗進行驗證，并將設計溫升、仿真溫升、試驗溫升進行對比分析，確定了仿真溫升和試驗溫升的擬合度。基于散熱系數對電抗器溫升的預判能力，提出通過優化各層電阻分布、改善各層通風散熱條件等方式改善溫升分布均勻性，保證了電抗器的安全穩定運行。
關鍵詞：±800 kV 特高壓直流輸電；平波電抗器；熱點溫升；散熱系數
中圖分類號：TM478 文獻標識碼：B 文章編號：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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