500kV有载和无载调压变压器并列运行问题的探讨.pdf

第28卷第3期
广东电力
2015年3月
GUANGDONG ELECTRIC POWER
Mar.2015
doi:10.3969/ ]. Issn.1007-290X.2015.03.009
500kV有载和无载调压変压器
并列运行问题的探讨
席云华1,林立波2,朱熙樵3,邱涌
(1.广州电力设计院,广东广州510610:2,广州供电局有限公司,广东广州510620:3.中南电力设计院,湖北武汉43071)
摘要:2012年广州电网一座500kV变电站由于其有载调压主变压器W相故障被迫退运,为保证对用户的安全
可靠供电,拟采用现有一组无载调压主变压器替换故障变压器。根据变电站变压器技术参数,对余下正常的
台有载调压主变压器与拟采用的无载调压主变压器并列运行问题进行分析,给出了不同参数、型式的2台变压
器并列运行的条件和最终推荐运行的匹配档位;对两种不同档位组合下2台变压器的负荷分配进行计算,结果
表明2台变压器并列运行是可行的
关键词:有载调压主变压器;无载调压主变压器;并列运行;循环功率;过励磁
中图分类号:TM423
文献标志码:B
文章编号:1007-290X(2015)03-(0035-04
Discussion on Parallel Operation of 500 kv On-load and No-load Tap
Changing Transformers
XI Yunhua! LIN Libo?, ZHU Xiqiao, QIU Yong
(1. Guangzhou Elcctric Power Design Institute, Guangzhou, Guangdong 510610, China; 2. Guangzhou Power Supply Bu
reau Co, Ltd, Guangzhou, Guangdong 510620, China; 3. Central Southern China Electric Power Design Institute, W
han, Hubei 430071, China)
Abstract: In 2012, one 500 kv substation of Guangzhou power grid was forced to withdraw for reason of W phase failure of
its on-load tap changing main transformer. In order to ensure safe and reliable power supply to customers, it was planning to
use a set of no-load tap changing main transformers to replace faulted transformers According to technical parameters of
the transformer, this paper analyzes parallel operation of the rest of normal on-load tap changing main transformer and the
load tap changing transt
proposed. In addition, conditi
ing tap positions finally
Mended f
parallel operation of the two transformers of different parameters and types were proposed. Load distribution of the two
transformers with combination modes of two different tap positions was calculated and the result proves feasibility of parallel
operation of these two transformers
Key words: on-load tap changing main transformer; no-load tap changing main transformer; parallel operation; circulating
power; over excitation
2012年9月7日13时45分,广州某500kV运。因3号有载主变运行时间已超过20年,且设
变电站3号有载调压主变压器(以下简称“有载主备状态不佳,为避免故障重复发生,提高设备安全
变”)W相设备内部故障,爆炸起火,设备被迫停水平,广州供电局有限公司决定对3号有载主变三
相本体进行整体更换。其中W相报废,其余两相
作为备用。为保证对用户的安全可靠供电,拟采用
收稿日期:2014-11-21
某制造厂生产的、现尚未安装的1台500kV无载