基于kmeans聚类的主变压器室复合通风运行优化节能研究  

Energy Optimization of Hybrid Ventilation Operation in Main Transformer Room Based on Kmeans Clustering

作　　者：肖波 郑月松 王晓玉 王文峰 张萍[2] 孟华[2] 阮应君[2] Xiao Bo;Zheng Yuesong;Wang Xiaoyu;Wang Wenfeng;Zhang Ping;Meng Hua;Ruan Yingjun(State Grid Henan Economic Research Institute,Henan,510000;School of mechanical engineering,Tongji University,Shanghai,201804)

机构地区：[1]国网河南省电力公司经济技术研究院,郑州510000 [2]同济大学机械与能源工程学院,上海201804

出　　处：《制冷与空调（四川）》2024年第6期743-752,共10页Refrigeration and Air Conditioning

基　　金：国网河南省电力公司科技计划(5217L023000A)。

摘　　要：针对郑州市110kV全户内变电站主变压器室的既有通风方式进行运行优化节能研究。基于前期自然通风与机械通风优化设计的研究,提出一种复合通风系统的温度梯度优化运行策略。通过CFD模拟确定满足主变室安全温度所要求的自然通风与机械通风交互运行的启停温度及间隔时长。采用kmeans聚类对郑州市5~10月室外干球温度进行聚类,并采用频率统计折算法对簇的重心位置进行调整,优化温度梯度典型日的确定方法,用于复合通风系统的节能分析。结果表明,所提运行策略可使机械通风全年运行时长从2400h减少至362.7h,节能率约为84.9%,也比基于室外干球温度的通风策略节能约47.1%。本研究具有区域推广价值,对变电站通风系统的安全节能运行具有借鉴意义。This work focuses on the optimization of ventilation operation mode to save energy in the existing ventilation of the main transformer room at the 110kV indoor substation in Zhengzhou city.Based on the optimized layout of hybrid ventilation in our previous study,an operation optimization strategy of temperature gradient for a hybrid ventilation system is proposed.CFD simulation was used to determine the start-stop temperature and interval duration of natural and mechanical ventilation to meet the required safe working temperature of the main transformer room.Kmeans clustering was utilized to group the outdoor dry-bulb temperature from May to October in Zhengzhou.Combined with frequency analysis,the centroids of the clusters were adjusted to optimize the typical days.The energy-saving analysis indicated that with the optimized operation strategy,the annual operating time of mechanical ventilation is reduced from 2400h to 362.7h,achieving an energy-saving rate of approximately 84.9%.And a rate of 47.1%around compared to ventilation strategies based on outdoor dry bulb temperature.The operation strategy is expected to have reference for the safe and energy-saving operation of substation ventilation systems with regional versatile value.

关 键 词：kmeans聚类 110kV全户内变电站 主变压器室 复合通风运行策略 节能分析 

分 类 号：TU119[建筑科学—建筑理论]