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咸日常,高鸿鹏,孙晓维,等. 基于雷电耐受能力的配电变压器选型策略[J]. 科学技术与工程, 2021, 21(24): 10270-10274.
Xian Richang,Gao Hongpeng,Sun Xiaowei,et al.Distribution Transformer Selection Strategy Based on Lightning Tolerance Ability[J].Science Technology and Engineering,2021,21(24):10270-10274.
基于雷电耐受能力的配电变压器选型策略
Distribution Transformer Selection Strategy Based on Lightning Tolerance Ability
投稿时间:2020-12-24  修订日期:2021-05-25
DOI:
中文关键词:  配电变压器  型式  等效模型  耐雷水平  ATP-EMTP  选型策略
英文关键词:distribution transformer  types  equivalent model  lightning withstand level  ATP-EMTP  type selection strategy
基金项目:国家自然科学基金项目(51907109)
              
作者单位
咸日常 山东理工大学电气与电子工程学院
高鸿鹏 山东理工大学电气与电子工程学院
孙晓维 山东七星电气科技发展有限公司
王在明 山东理工大学电气与电子工程学院
张冰倩 山东理工大学电气与电子工程学院
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中文摘要:
      配电变压器的绝缘配置水平低于配电线路,在遭受雷电侵害时极易造成绝缘击穿事故,在设备选型时通常仅从容量需求角度出发,并未考虑型式差异的影响。本文基于不同接线组别与容量的配电变压器结构参数,采用ATP-EMTP (electromagnetic transients program, version alternative transients program) 软件建立了相应的雷击宽频等效模型,分析型式差异对其雷电耐受能力的影响,研究基于雷电耐受能力的配电变压器选型策略。结果表明,型式和容量差异对配电变压器雷电耐受能力具有一定影响,小容量配电变压器雷击过电压幅值相对较高,接线组别为Dyn-11型的配电变压器雷电耐受能力总体优于Yyn-0型,在设备选型时应统筹考虑。
英文摘要:
      The accidents of insulation breakdown can be easily happened when suffered by lightning if the insulation level of distribution transformer is lower than that of distribution lines. However, the distribution transformers selection is generally based on the capacity requirements without considering the difference of transformers’ types. In this paper, the equivalent model of lightning broadband is established by ATP-EMTP (electromagnetic transients program, version alternative transients program), considering the different wiring groups and capacities of distribution transformers. The impact of the types of distribution transformers on its lightning tolerance level is analyzed. Finally, the type selection strategies based on the lightning tolerance level is proposed. The results show that the impact of the difference of types and capacities on the lightning tolerance of distribution transformers is remarkable. The lightning overvoltage magnitude of small capacity distribution transformers is relatively high and the lightning tolerance of distribution transformers with the type of Dyn-11 is better than that of Yyn-0. Hence, the capacities and the type groups should be considered comprehensively when selecting distribution transformers.
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