柔性直流输电网的故障保护原理研究

发布时间：2018-04-22 22:25

本文选题：柔性直流输电网 + 故障保护　；参考：《高电压技术》2017年01期

【摘要】：为了进行柔性直流输电网的故障保护原理的研究,首先描述了实现柔性直流输电网故障保护的主要困难,然后提出了就地检测故障就地保护的柔性直流输电网故障保护策略,采用混合型直流断路器作为直流断路器的一般性模型,构建了一个四端直流输电网测试系统。基于该测试系统,详细比较了由继电保护系统主导的常规故障处理策略与就地检测故障就地保护策略的性能差别;同时,全范围扫描分析了就地检测故障就地保护策略的选择性。测试结果表明,所提出的就地检测故障就地保护策略在选择性、快速性和经济性上具有很大的优势。
[Abstract]:In order to study the fault protection principle of the flexible DC transmission network, the main difficulty of the fault protection for the flexible DC transmission network is described first. Then the fault protection strategy of the flexible DC transmission network is put forward. The Hybrid DC circuit breaker is used as the general model of the DC circuit breaker, and the construction of the fault protection is constructed. A four terminal DC transmission network test system is introduced. Based on the test system, the performance difference between the conventional fault processing strategy and the local detection fault location protection strategy is compared in detail. At the same time, the selection of the local detection fault on the ground protection strategy is analyzed by the full scope scan. The test results show that the proposed method is proposed. The in-situ detection and failure local protection strategy has great advantages in selectivity, rapidity and economy.

【作者单位】：浙江大学电气工程学院;
【分类号】：TM721.1

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