摘要
为了校核±1 100 kV换流站阀厅金具的起晕状态,以某±800 kV换流站阀厅工程图和某±1 100 kV换流站阀厅初始设计方案为基础,建立阀厅3D全模型;通过瞬时电位加载法求得阀厅模型的整体电场分布,并采用子模型法对局部电场进行精确求解;根据计算结果,结合Peek公式及现有的试验数据,对管形和球形金具进行起晕校核,并对最容易起晕的金具进行优化设计。计算结果表明,本阀厅内的金具在电晕控制方面,具有一定的安全裕度;换流变D侧C相下部套管均球形压装置,最容易起晕,建议改为双环均压装置。研究成果可为在建的±1 100 kV输电工程提供指导意见。
To check corona inception state of the fittings in ±1 100 kV UHVDC converter station valve hall,a 3D model of the fittings is built on the basis of the engineering drawing of a ±800 kV converter station valve hall and the initial design of a ± 1 100 kV converter station valve hall. The whole electric field distribution is obtained by using the instantaneous potential loading method of electrostatic field, and the submodeling method is employed to achieve precision solution of local electric field. According to the obtained result, the corona state of tube and spherical fittings are checked by means of peek formulation and the experimental data,and the corona-sensitive fittings are optimized. The calculated results indicate that the fittings in this valve hall have certain safety margin,and the spherical equalizing fittings for the bushing below phase C on the D side of converter transformer is most possible to induce corona,so it is suggested to change the fittings into double-ring type.
作者
常林晶
徐光辉
徐健涛
宋铁创
张琪
金硕
杜志叶
杜鹏飞
CHANG Linjing;XU Guanghui;XU Jiantao;SONG Tiechuang;ZHANG Qi;JIN Shuo;DU Zhiye;DU Pengfei(Pinggao Group Co.,Ltd.,Henan Pingdingshan 467000,China;School of Electrical Engineering,Wuhan University, Wuhan 430072,China;College of Electrical Engineering &New Energy, Three Gorges University,Hubei Yichang 443002,China)
出处
《高压电器》
CAS
CSCD
北大核心
2018年第6期87-92,100,共7页
High Voltage Apparatus
基金
国家电网公司科技项目资助项目(SGNXJX00YJJS1400105)~~
关键词
特高压
阀厅
电场计算
起晕校核
金具优化
UHVDC
valve hall
electric field calculation
corona inception checking
optimization of fittings
