电网技术2016，Vol.40Issue(6)：1768-1773,6.DOI:10.13335/j.1000-3673.pst.2016.06.023
高压直流缓冲器的建模分析及应用
Modeling and Simulation Analysis on HVDC Snubber
摘要
Abstract
HVDC snubber is a transformer-like short-circuit current suppression device. It can suppress and interrupt short-circuit current of HVDC transmission effectively combined with HVDC circuit-breaker. In this paper, HVDC snubber model is developed by adopting nonlinear resistance and nonlinear inductance in parallel based on its nonlinear equivalent circuit. Then experiment and simulation are conducted to verify HVDC snubber performance, and results show that HVDC snubber can effectively suppress short-circuit current and reduce arcing time. Dynamic response of its non-linear equivalent circuit is also analyzed, and results show that HVDC snubber can suppress short circuit current effectively only in over-damping state. Finally, a hybrid HVDC short-circuit protection scheme is proposed, combining HVDC snubber and HVDC circuit-breaker, and its feasibility is analyzed.关键词
高压直流缓冲器/直流输电/直流断路器/故障抑制Key words
HVDC snubber/DC transmission/DC circuit-breaker/fault suppression分类
信息技术与安全科学引用本文复制引用
屈鲁,李格..高压直流缓冲器的建模分析及应用[J].电网技术,2016,40(6):1768-1773,6.基金项目
国家重点基础研究发展计划项目(973项目)(2011GB-113005-1)。 The National Basic Research Program of China (973 Program)(2011GB113005-1) （973项目）
