[1]张 维,丁青青,胡 刚,等.基于ATP-EMTP仿真分析的配电变压器雷电过电压防护方案研究[J].电瓷避雷器,2020,(02):86-92.[doi:10.16188/j.isa.1003-8337.2020.02.014]
 ZHANG Wei,DING Qingqing,HU Gang,et al.Research on Lightning Overvoltage Protection Schemes of Distribution Transformer Based on ATP-EMTP Simulation Analysis[J].,2020,(02):86-92.[doi:10.16188/j.isa.1003-8337.2020.02.014]
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基于ATP-EMTP仿真分析的配电变压器雷电过电压防护方案研究()
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《电瓷避雷器》[ISSN:1006-6977/CN:61-1281/TN]

卷:
期数:
2020年02期
页码:
86-92
栏目:
避雷器
出版日期:
2020-04-25

文章信息/Info

Title:
Research on Lightning Overvoltage Protection Schemes of Distribution Transformer Based on ATP-EMTP Simulation Analysis
作者:
张 维1 丁青青1 胡 刚2 乔中华2 马孝强2
(1.清华大学电力系统及发电设备控制和仿真国家重点实验室,北京 100084; 2.国家电网河南省电力公司三门峡供电公司,河南 三门峡 472000)
Author(s):
ZHANG Wei1 DING Qingqing1 HU Gang2 QIAO Zhonghua2 MA Xiaoqiang2
(1.Tsinghua University, State Key Laboratory of Control and Simulation of Power System and Generation Equipments, Beijing 100084, China; 2.State Grid Henan Electric Power Company, Sanmenxia Electric Power Company, Sanmenxia 472000, China)
关键词:
配电变压器 雷电过电压防护 ATP-EMTP仿真
Keywords:
distribution transformer lightning overvoltage protection ATP-EMTP simulation
DOI:
10.16188/j.isa.1003-8337.2020.02.014
摘要:
配电变压器是重要的电力转换设备,其安全可靠运行影响着配电网的供电质量。雷击造成的感应过电压是造成配电变压器故障的主要原因之一,目前我国大部分地区只重视在配电变压器高压侧安装避雷器,但这并不能起到有效的防护作用。本文建立了配电变压器的模型,在ATP-EMTP中对雷电感应过电压侵入配电变压器进行仿真,得到高压绕组中性点和低压绕组是防护的薄弱点,并对低压侧加装避雷器、改善接地电阻、高压侧加装电感这3种防护措施进行仿真分析和效果评估。结果显示:在低压侧加装避雷器可以较大提升配电变压器的雷电防护能力,辅以改善接地电阻和加装电感能够进一步提升防护效果,本文最后对防护方案的整体经济效益进行简要分析,对配电变压器的雷电方案防护设计具有指导意义。
Abstract:
Distribution transformer is an important power conversion equipment, the safe and stable operation of which ensures the power supply of distribution network. And lightning induced overvoltage(LIOV)is one of the main causes of transformer insulation fault. At present, most areas in China only pay attention to install the lightning arrester on the high voltage side of distribution transformer, which however, will not provide effective protection. The author establishes the model of distribution transformer and simulates the case that LIOV invades distribution transformer in ATP-EMTP. The simulation result shows that the neutral point of high voltage winding, and the low voltage winding are the weak points of protection. And therefore, three protective measures are proposed and simulated:(a)installing lightning arrester in the low voltage side of transformer,(b)reducing grounding resistance and(c)installing inductors in the high voltage side of transformer. The simulation result shows that the lightning protection capability of distribution transformer can be greatly enhanced by the first proposed measure and can be further improved by the other two proposed measures. Finally, the overall economic benefit of the protection scheme is briefly analyzed. The analysis results in this paper are of guiding significance to the lightning protection design of the distribution transformer.

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备注/Memo

备注/Memo:
收稿日期:2018-07-09作者简介:张维(1993—),男,硕士,研究方向为变压器建模和配电网雷电防护等。
更新日期/Last Update: 2020-04-25