中国电机工程学报2018，Vol.38Issue(1)：309-319,后插33,12.DOI:10.13334/j.0258-8013.pcsee.170495
柔性直流电网用混合式高压直流断路器特征参数提取及应用
Characteristic Parameters Extraction and Application of the Hybrid DC Circuit Breaker in MMC-HVDC
摘要
Abstract
The characteristic parameters of the hybrid DC breaker has closely linked to the HVDC system configuration parameters in the grids constructed by half-bridge modular multi-level converter combined with hybrid DC breaker. The characteristic parameters on the one hand reflect the output level of the MMC-HVDC system, and on the other hand reflect the ability of the breaker to bear the most severe whole machine stress. Characteristic parameters extraction is the theoretical basis to realize the engineering application of hybrid DC breaker in the MMC-HVDC grid.Based on the study of application and principle and operation of the hybrid DC circuit breaker, five characteristic parameters and their mathematical correlation were extracted and analyzed.It confirms that those characteristic parameters represent the effect derived from both capacity of the grids and stresses on the breaker. In order to verify the validity of the parameter extraction and the mathematical correlation, a system-level simulation model in PSCAD/EMTDC was built. Finally, the implementation of 200kV hybrid DC breaker breaking test verified the accuracy of the simulation and mathematical analysis. The conclusion of this paper can effectively guide the design and application of the hybrid DC circuit breaker.关键词
柔性直流电网/混合式高压直流断路器/半桥子模块/参数提取/数学关系/特征参数Key words
MMC-HVDC/hybrid DC circuit breaker/parameter extraction/HB-SM/mathematical correlation/characteristic parameters分类
信息技术与安全科学引用本文复制引用
丁骁,汤广福,韩民晓,高冲,王高勇..柔性直流电网用混合式高压直流断路器特征参数提取及应用[J].中国电机工程学报,2018,38(1):309-319,后插33,12.基金项目
国家电网公司科技项目(±500kV/3000A 直流断路器关键技术研究及设备研制). Science and Technology Projects of SGCC (Research on Key Technology and Equipment of±500kV/3000A DC Circuit Breaker). （±500kV/3000A 直流断路器关键技术研究及设备研制）
