中国电机工程学报2017，Vol.37Issue(12)：3429-3436,8.DOI:10.13334/j.0258-8013.pcsee.161806
一种快速评估多馈入直流系统换相失败风险的方法
A Fast Assessment Method for Evaluating Commutation Failure Risk of Multi-infeed HVDC Systems
摘要
Abstract
Quickly and accurately assessing the risk of commutation failure in multi-infeed (high voltage direct current,HVDC)systems when faults occurring at the receivingend AC system,have great significance to ensure the safe and stable operation of large power grids.Inspired by the definition of multi-infeed interaction factor (MIIF),the concept of ACDC voltage coupling factor (ADVCF) was proposed.Based onthe node impedance matrix,a simple calculation formula of ADVCF was derived.The calculation formula of the critical AC-DC voltage coupling factor (CADVCF) was derived by the minimum extinction angle criteria.A method based on CADVCF to fast evaluate commutation failure risk of multiinfeed HVDC system was proposed:when a three-phase shortcircuit fault is occurring at an receiving-end system AC bus,if the ADVCF between one DC system and the AC bus is larger than the CADVCF between them,commutation failure will occur in the DC system.The simulation results of the actual large-scale system prove the speediness and accuracy of the proposed assessment method.关键词
多馈入直流输电系统/换相失败/多馈入交互作用因子/交直流系统电压耦合作用因子/临界交直流系统电压耦合作用因子Key words
multi-infeed HVDC transmission system/commutation failure/multi-infeed interaction factor/AC-DC voltage coupling factor/critical AC-DC voltage coupling factor分类
信息技术与安全科学引用本文复制引用
邵瑶,汤涌..一种快速评估多馈入直流系统换相失败风险的方法[J].中国电机工程学报,2017,37(12):3429-3436,8.基金项目
国家电网公司科技项目(XT71-16-047).Key Technology Project of State Grid Corporation of China(XT71-16-047). （XT71-16-047）
