摘要
研究的主要目的是通过对750 kV避雷器参数的优化来降低设备绝缘水平或使设备留有更大的绝缘裕度。针对典型750 kV敞开式变电站的接线方式,采用仿真计算和对现有避雷器通流容量校核的方法,得到了4种避雷器参数配置时设备节点上的绕击侵入波过电压、动作负荷、配置简化前后的绝缘裕度和避雷器吸收能量,以及优化参数和简化配置后的校验结果。研究得到:在变电站内避雷器可全部采用Y20W-600/1380进行绝缘优化,该配置可保证避雷器的自身安全性,同时降低变电站内设备的过电压,提高设备绝缘保护裕度,并且可去掉高压并联电抗器处的一组避雷器,简化了避雷器设置,也提高了变电站内设备的绝缘保护裕度。
Through the optimization of 750 kV surge arrester data, the insulation level of equipment can be reduced or have more insulation margin. In the light of typical wiring mode of 750 kV AIS substation, simulation, calculation diverting capacity check of current surge arrester are used to obtain shielding failure invaded wave over-voltage of equipment node, operation load of surge arrester, insulation margin before and after disposition simplifica- tion, absorbed energy of surge arrester, and calibration result of equipment with optimal data ＆ simplified disposition under 4 kinds of arrester data dispositions. It is concluded that Y20W-600/1380 surge arrester can be adopted to optimize insulation in substation, and a group of arrester on HV shunt reactor can be removed to simplify arrestor disposition, and improve insulation protection margin of substation equipment.
出处
《高电压技术》
EI
CAS
CSCD
北大核心
2009年第12期3143-3148,共6页
High Voltage Engineering
基金
陕西省电力公司科技项目(2008-04)~~
关键词
750
KV
敞开式
绝缘水平
保护裕度
避雷器
参数优化
配置
通流容量
750kV
AIS
insulation level
protection margin
surge attester
data optimization
disposition
diverting capacity
