集装箱式大容量直流融冰装置的设计及过热分析  

Design and overheat analysis of container-type large capacity DC de-icer

作　　者：潘国洪[1] PAN Guohong(China Southern Power Grid Extra High Voltage Company,Guangzhou 510000)

机构地区：[1]中国南方电网超高压输电公司,广州510000

出　　处：《电气技术》2022年第11期88-91,98,共5页Electrical Engineering

摘　　要：对于大容量直流融冰系统,其整流阀及控制保护柜普遍固定安装于阀厅建筑内。为了节省占地面积、缩短建设周期,本文对大容量整流器及其控制保护柜、阀冷在集装箱内的布置进行研究,提出集装箱式融冰装置阀组设计、温控及防水、防火及阻燃、抗震、运维便利性等方面的具体设计方案。整流变和集装箱在零功率试验时出现过热问题,谐波是导致整流变过热的根本原因,涡流是导致集装箱局部过热的根本原因。针对整流变过热提出加厚磁屏蔽、重新绕制网侧绕组并增加单独调压绕组的改进措施,针对集装箱局部过热提出更换无磁不锈钢材料、阻断闭合磁路的改进措施。结果表明,该集装箱式大容量直流融冰装置的设计完全可行,这为已建成换流站的优化升级奠定了理论基础。For large capacity DC de-icing system,the rectifier and control cabinet are built in a valve hall generally.In order to save the occupied area and the construction period,this paper has a study for the rectifier and control cabinet,valve cooling system layout in the container.This paper proposes a design ofr converter,temperature control,waterproof,flame retardant,anti-seismic,operation and maintenance convenience for the container-type DC de-icer.The converter transformer and container have overheat faults during zero power test.Harmonic is the root cause for converter transformer overheat,and eddy current is the root cause for container overheat.Measures like thickening magnetic shield,rewinding the line side winding and adding a voltage regulating winding for converter transformer,replacement of non-magnetic stainless steel material and cut closed magnetic circuit for container are given to solve the overheat faults.It is found that the design of container-type large capacity DC de-icer is completely feasible,which lays a theoretical foundation for the operation converter station optimization and upgrading.

关 键 词：集装箱式 大容量 直流融冰装置 过热 谐波 涡流 

分 类 号：TM752[电气工程—电力系统及自动化]