VSC-HVDC控制保护系统的设计与实验研究  

Design and Experimental Study of Control and Protection System for VSC-HVDC

作　　者：牟哲[1] 同向前[1] 孙伟 

机构地区：[1]西安理工大学自动化与信息工程学院,陕西省西安市710048 [2]西安西电电力系统有限公司,陕西省西安市710065

出　　处：《智能电网》2017年第4期334-341,共8页Smart Grid

摘　　要：控制保护系统是整个柔性直流输电系统的核心。从工程应用角度开发一套VSC-HVDC的控制与保护系统,控制上采用系统级控制与换流器级控制相结合的两层结构,保护上以"分类、分层、分级"为体系设计柔性保护与驱动脉冲控制结合的复合型保护方案。建立一套背靠背柔性直流输电系统实验样机,在并网输电工况下完成实验样机的性能检验,结果表明:样机的控制保护系统达到了预期的设计目标和效果。Control and protection system is the key part of the whole voltage source converter based high voltage direct current （VSC-HVDC） system. The control and protection system of VSC-HVDC is developed from the view of engineering application. In the control system the two-level hierarchical control structure with a system-level and a inverter-level is designed, and in the protection system a complex protection program with a combination of flexible protection and pulse blockade is designed based on ＂sorted, stratified, hierarchical＂ protective system. A prototype of VSC-HVDC system with back to back structure is developed, and the performance test is accomplished under the grid connected condition. The experimental results show that the prototype control and protection system meets the design objectives and expected results.

关 键 词：柔性直流输电 控制保护系统 柔性保护 脉冲封锁 特性实验 

分 类 号：TM721.1[电气工程—电力系统及自动化]