特高压直流输电系统接地极引线双端不平衡保护
发布时间：2018-09-12 17:22
【摘要】：在目前工程中现有的接地极线不平衡保护和接地极线差动保护原理基础上分析并提出接地极引线双端不平衡保护。所提的双端不平衡保护原理,具有保护线路全长,识别引线断线和金属接地故障并能够计算出故障位置,不受过渡电阻的影响,以及定值整定简单等优点。采用EMTDC/PSCAD仿真验证了理论分析的正确性,最后采用实时数字仿真器(RTDS)仿真验证了所提保护动作策略的可行性。
[Abstract]:On the basis of the existing earth pole line unbalanced protection and ground pole line differential protection principle in current engineering, the double end unbalanced protection of the ground pole lead wire is analyzed and put forward. The proposed two-terminal unbalanced protection principle has the advantages of full length of protection line, identification of lead break and metal ground fault, calculation of fault location, no influence of transition resistance, and simple setting of value. The correctness of the theoretical analysis is verified by EMTDC/PSCAD simulation. Finally, the feasibility of the proposed protection action strategy is verified by the real-time digital simulator (RTDS) simulation.
【作者单位】： 南京南瑞继保电气有限公司;南瑞集团公司(国网电力科学研究院);
【分类号】：TM721.1;TM862
[Abstract]:On the basis of the existing earth pole line unbalanced protection and ground pole line differential protection principle in current engineering, the double end unbalanced protection of the ground pole lead wire is analyzed and put forward. The proposed two-terminal unbalanced protection principle has the advantages of full length of protection line, identification of lead break and metal ground fault, calculation of fault location, no influence of transition resistance, and simple setting of value. The correctness of the theoretical analysis is verified by EMTDC/PSCAD simulation. Finally, the feasibility of the proposed protection action strategy is verified by the real-time digital simulator (RTDS) simulation.
【作者单位】： 南京南瑞继保电气有限公司;南瑞集团公司(国网电力科学研究院);
【分类号】：TM721.1;TM862
【参考文献】
相关期刊论文 前10条
1 姚其新;黎恒p，
本文编号：2239708
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