特高压换流变压器对称性涌流的生成及其对大差保护的影响

发布时间：2018-03-03 12:00

本文选题：特高压换流变压器　切入点：对称性涌流　出处：《电力系统自动化》2017年05期 　论文类型：期刊论文

【摘要】：借鉴和应涌流分析方法,分析特高压一组换流变压器空投时对称性涌流的产生机理和变化特点。基于工程实际参数建立详尽的特高压直流输电的仿真模型,对特高压换流站内一组换流变压器空投产生对称性涌流现象进行了仿真分析。阐明二次谐波制动判据失去闭锁能力造成特高压换流变压器大差保护误动的机理,为提升特高压换流站大差保护的动作可靠性提供分析手段。
[Abstract]:Using the method of inrush analysis for reference, this paper analyzes the generation mechanism and variation characteristics of symmetric inrush current during airdrop of UHV converter transformers. Based on the actual engineering parameters, a detailed simulation model of UHV HVDC transmission is established. The phenomenon of symmetrical inrush produced by air drop of a group of converter transformers in an UHV converter station is simulated and analyzed. The mechanism of the misoperation of large differential protection of UHV converter transformer caused by the loss of locking capacity of the second harmonic braking criterion is expounded. To improve the operation reliability of UHV converter station differential protection.
【作者单位】：三峡大学电气与新能源学院;强电磁工程与新技术国家重点实验室(华中科技大学);三峡电能有限公司;
【基金】：国家自然科学基金资助项目(51607106)~~
【分类号】：TM721.1;TM41

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