110 kV变电站电抗器室夏季通风降温技术模拟与试验研究
Simulation and experimental study on ventilation and coolingtechnology for a 110 kV substation reactor room in summer
摘要：
电抗器具有运行能耗高、散热量大等特点,电抗器室的通风降温效果直接影响变电站的安全稳定运行。本文以上海地区某110 kV变电站的电抗器室作为研究对象,在负荷最高峰条件下对该电抗器室进行了温度测试,设计了一种机械通风降温控制方案,并采用Fluent软件验证了方案可靠性。结果表明:电抗器室内温度与日负荷变化趋势大致一致,呈现正弦函数变化规律;电抗器室内温度峰值出现在每日10:00—15:00,滞后于室外环境空气温度,室内平均温度最高达到38.7 ℃;现有电抗器室通风技术方案不能满足夏季最高负荷下的散热需求。模拟分析了不同设计参数下机械通风的降温效果,并给出了最佳送风温度和排风口位置建议。
Abstract：
Reactors have the characteristics of high operation energy consumption and large heat dissipation. The ventilation and cooling effect of the reactor room directly affects the safe and stable operation of substations. In this paper, the reactor room of a 110 kV substation in Shanghai is taken as the research object, the temperature test of the reactor room is carried out under the peak load condition, a mechanical ventilation and cooling control scheme is designed, and the reliability of the scheme is verified by Fluent software. The results show that the indoor temperature of the reactor room is roughly consistent with the curve of the daily load, showing a sinusoidal function variation law. The peak indoor temperature of the reactor room occurs from 10:00 to 15:00 every day, lagging behind the outdoor ambient air temperature, and the average indoor air temperature reaches 38.7 ℃ at the maximum. The existing ventilation technical scheme for the reactor room cannot meet the heat dissipation demand under the highest load in summer. The cooling effect of mechanical ventilation under different design parameters is simulated and analysed, and the optimal air supply temperature and exhaust outlet location suggestions are given.
Keywords:reactor room; substation; ventilation and cooling; experimental test; optimal design; simulation analysis