On-load Tap-changing Technology of Distribution Transformer

doi:10.11930/j.issn.1004-9649.201707204

Abstract

Abstract: Because of high penetration level of Distributed Generations (DGs) and rapid growth of Electric Vehicles (EVs) loads, distribution network voltage fluctuation problem becomes more and more prominent. Voltage control of distribution network is of great significance to stabilize voltage and raise voltage passing rate. The on-load tap-changing of distribution transformer is one of the means to realize voltage control of distribution network. On-load tap-changing switch is key component of distribution transformer to achieve voltage regulation. Safe and reliable operation of on-load tap-changing distribution transformer is directly influenced by its technical performance. The on-load tap-changing schemes with free maintenance or no arc and no impact switch have been put forward, but their advantages and disadvantages have not been systematic analyzed. In this paper, application situation of voltage regulation technology at home and abroad is explored. The implementation methods of distribution transformer on-load tap-changing switch technology are described and divided into three categories: mechanical, power electronics and composite. Technical implementation principle and advantages and disadvantages of different on-load tap-changing models are analyzed. Development direction and further study focus of distribution transformer on-load tap-changing technology are also clarified.

Key words: distribution network, distributed generation, voltage control, distribution transformer, on-load tap-changing technology

CLC Number:

TM761

WANG Jinli, MA Zhao, PAN Xu, WANG Li. On-load Tap-changing Technology of Distribution Transformer[J]. Electric Power, 2018, 51(5): 75-79,100.

Add to citation manager EndNote|Ris|BibTeX

URL: https://www.electricpower.com.cn/EN/10.11930/j.issn.1004-9649.201707204

https://www.electricpower.com.cn/EN/Y2018/V51/I5/75

References

[1] ?BANGASH K N, FARRAG M E A, OSMAN A H. Smart control of on load tap changer deployed in low voltage distribution network[C]//International Conference on Electric Power and Energy Conversion Systems, IEEE, 2016:1-6.
[2] ZECCHINO A, MARINELLI M, HU J, et al. Voltage control for unbalanced low voltage grids using a decoupled-phase on-load tap-changer transformer and photovoltaic inverters[C]//Power Engineering Conference, IEEE, 2015:1-6.
[3] 陈敬佳, 李晓明. 电力变压器有载调压技术的新进展[J]. 华北电力技术. 2001(10):52-54.CHEN Jingjia, LI Xiaoming. Recent development of OLTC of transformer[J]. North China Elctric Power, 2001(10):52-54.
[4] 周仁才, 钱素静, 姜春莹. 配变带在线滤油功能的有载调压系统的应用[J]. 浙江电力. 2013(5):72-74.ZHOU Rencai, QIAN Sujing, JIANG Chunying. Application of on-load voltage regulation system with online oil filtering function for distribution transformer[J] Zhejiang Electric Power, 2013(5):72-74.
[5] 肖遥, 陈球武, 慕娇娇, 等. 变压器无弧有载调压的研究[J]. 电气开关, 2014(5):52-54.XIAO Yao, CHEN Qiuwu, MU Jiaojiao, et al. Research on non-arcing on-load voltage regulation of transformers[J]. Electric Switch, 2014(5):52-54.
[6] ABE K, MATSUURA Y, KANJA S. Evaluation of voltage control system for a distribution network with middle-class PV systems connection[C]//CIGRE, 2014:1-6.
[7] 丁勇, 李再华. 德国配电网运行管理经验及其启示[J]. 南方电网技术. 2008, 2(5):47-50.DING Yong, LI Zaihua. The operation management experience of distribution networks in germany and its revelation to us[J]. Southern Power System Technology. 2008, 2(5):47-50.
[8] 赵刚, 施围. 无弧有载分接开关的研究[J]. 高电压技术, 2004, 30(4):49-51.ZHAO Gang, SHI Wei. Study on arcless on-load tap changer[J]. High Voltage Engineering, 2004, 30(4):49-51.
[9] 骆平, 刘清澄. 无弧切换的有载调压变压器[J]. 中国电力, 2003, 36(S1):21-23.LUO Ping, LIU Qingcheng. A new type of on-load tap changer without arcing[J]. Electric Power, 2003, 36(S1):21-23.
[10] 李晓明, 黄俊杰, 尹项根, 等. 平滑无冲击电力电子有载调压装置[J]. 电力系统自动化, 2003, 27(20):45-48.LI Xiaoming, HUANG Junjie, YIN Xianggen, et al. Research of smooth and non impact power electronics OLTC[J]. Autornation of Electric Power Systems, 2003, 27(20):45-48.
[11] 张德明. 有载分接开关国内现状及发展动向[J]. 变压器, 2000, 37(1):36-39.ZHANG Deming. Domestic status and development of on-load tap changer[J]. Transformer, 2000, 37(1):36-39.
[12] AINETTER J., BRAUNER G, HAUER H, 等. 可控硅辅助的分接开关"TADS"-延长变压器有载调压分接头切换装置免维护周期的新方法[C]//奥地利:1999年第15届国际供电会议论文集, 第一分册, 电网部件.
[13] 吴畏. 晶闸管有载分接开关[J]. 高压电器, 2004, 40(1):48-49, 52.WU Wei. Thyristor on-load tap changer[J]. High Voltage Apparatus, 2004, 40(1):48-49, 52.
[14] HARLOW J H, SWITCH F A. An arcless approach to step-voltage regulation[J]. IEEE Power Engineering Review, 1982, PER-2(7):47-48.
[15] SHUTTLEWORTH R, POWER A K, TIAN X, 等. 一种新颖的带有可控硅的分接开关方案[C]//英国:1997年第十四届国际供电会议论文集, 上卷.
[16] 黄俊杰, 李晓明. 电力电子有载调压装置的控制系统设计[J]. 电力自动化设备, 2003, 23(7):54-57.HUANG Junjie, LI Xiaoming. Design of automatic system for power electronics OLTC[J]. Electric Power Automation Equipment, 2003, 23(7):54-57.
[17] 王金丽, 李金元, 徐腊元. 大功率电力电子开关用于配电变压器无弧有载调压方案[J]. 电力系统自动化, 2006, 30(15):97-101.WANG Jinli, LI Jinyuan, XU Layuan. Scheme of arcless onload voltage regulation for distribution transformer using high power electronic switch[J]. Automation of Electric Power Systems, 2006, 30(15):97-101.
[18] 张德明. 浅论真空有载分接开关研发技术的要素(上)[J]. 变压器, 2014, 51(7):35-40.ZHANG Deming. Brief discussion on key factors of development technology of vaccum on-load tap-changer[J]. Transformer, 2014, 51(7):35-40.
[19] 邵志伟. 电力变压器系统损耗与散热特性研究[J]. 中国电力, 2016, 49(6):132-136.SHAO Zhiwei. Investigation on loss and heat dissipation characteristics for power transformer systems[J]. Electric Power, 2016, 49(6):132-136.
[20] 李岩军, 周春霞, 肖远清, 等. 特高压有载调压变压器差动保护特性分析[J]. 中国电力, 2014, 47(9):112-117.LI Yanjun, ZHOU Chunxia, XIAO Yuanqing, et al. Analysis of differential protection characteristic for on-load-tap-changer transformer of UHV[J]. Electric Power, 2014, 47(9):112-117.