Effect of Large-scale Power Electronic Equipment on Converter Transformer Protection Strategy and Countermeasure

SHEN Hongming; SONG Xuankun; YAO Yuhai; DU Na; LI Tiechen; ZOU Ge

doi:10.13296/j.1001-1609.hva.2020.03.034

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Effect of Large-scale Power Electronic Equipment on Converter Transformer Protection Strategy and Countermeasure

更新时间：2025-04-26

- Effect of Large-scale Power Electronic Equipment on Converter Transformer Protection Strategy and Countermeasure
- High VoltageApparatus Vol. 56, Issue 3, Pages: 230-233+252(2020)
- 作者机构：
  
  1. 国网经济技术研究院有限公司
  2. 国网北京市电力公司电力科学研究院
- 作者简介：
- 基金信息：
- DOI：10.13296/j.1001-1609.hva.2020.03.034
  CLC： TM721.1
- Published：2020
- 稿件说明：
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[1]申洪明,宋璇坤,姚玉海,杜娜,李铁臣,邹格.规模化电力电子装置接入对换流变保护策略的影响分析及对策研究[J].高压电器,2020,56(03):230-233+252.

SHEN Hongming, SONG Xuankun, YAO Yuhai, et al. Effect of Large-scale Power Electronic Equipment on Converter Transformer Protection Strategy and Countermeasure[J]. High voltageapparatus, 2020, 56(3): 230-233+252.
[1]申洪明,宋璇坤,姚玉海,杜娜,李铁臣,邹格.规模化电力电子装置接入对换流变保护策略的影响分析及对策研究[J].高压电器,2020,56(03):230-233+252. DOI： 10.13296/j.1001-1609.hva.2020.03.034.

SHEN Hongming, SONG Xuankun, YAO Yuhai, et al. Effect of Large-scale Power Electronic Equipment on Converter Transformer Protection Strategy and Countermeasure[J]. High voltageapparatus, 2020, 56(3): 230-233+252. DOI： 10.13296/j.1001-1609.hva.2020.03.034.

摘要

直流、新能源的大量接入

使得电网呈现出电力电子化特征。为了解决电力电子化装置大规模接入对现有换流变保护的影响问题

首先分析了现有换流变差动保护的适应性

然后研究了换流变两侧电流特征

最后提出了基于换流变两侧电流峰值构建新变压器的保护逻辑。新的保护方案在保证可靠性的基础上

同时能加快保护出口速度。基于PSCAD/EMTDC仿真结果验证了结论的正确性。

Abstract

Power electronic s dominated power system is forming gradually with the use of HVDC and new energy.In order to solve the effect of Power electronic s dominated power system on transformer protection

the adaption of converter transformer differential protection is first analyzed.Then the characteristic s of the current on both sides of the converter transformer are studied.Finally

the new protection logic of transformer based on the peak value of the current on both sides of the converter transformer is proposed.The new protection scheme can not only ensure the reliability

but also speed up the output protection.Simulation results based on PSC AD/EMTDC prove the conclusion to be correct.

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