基于改进过压限制器和ACDTS的混联半波长系统故障保护策略OA北大核心CSTPCD
Fault protection strategy for hybrid half-wavelength system based on improved overvoltage limiter and ACDTS
交直流混联半波长输电系统的暂态特性与常规的混联系统存在着很大差异.当混联系统半波长沿线发生不对称故障时,直流系统会受到沿线工频过电压和过电流的冲击.文章详细分析了混联系统半波长沿线故障的传播过程,研究了故障传播耦合机理.针对直流侧过电压问题,提出了在直流母线侧加装改进过压限制器,增设辅助限压通道,分级抑制直流侧过电压,并降低单个通道的电流值,提高了系统保护的限压水平;另一方面,对于直流侧过电流问题,提出了在换流站接口端并联接入双向晶闸管,实现交流…查看全部>>
The transient characteristic of AC/DC hybrid half-wavelength transmission system is quite different from conventional hybrid system.When an asymmetric fault occurs along the half-wavelength line of the hybrid system,the DC system will be impacted by power frequency overvoltage and overcurrent along the line.This paper analyzes the propagation process of faults along the half-wavelength line of the hybrid system in detail,and studies the mech-anism of fault p…查看全部>>
王华昕;黄兆;王杰;邓祥力
上海电力大学电气工程学院,上海 200090上海电力大学电气工程学院,上海 200090上海电力大学电气工程学院,上海 200090上海电力大学电气工程学院,上海 200090
动力与电气工程
混联半波长系统交流故障直流系统改进过压限制器双向晶闸管
hybrid half-wavelength systemAC faultDC systemimproved over-voltage limiterdouble thyristor
《电测与仪表》 2024 (5)
44-51,8
国家自然科学基金资助项目(51777119)国家自然青年基金资助项目(51307104)
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