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- In this paper, the cause of HVDC commutation failure is analyzed and the influence factors and sensitivity are introduced. 摘要通过对直流输电系统换相失败产生的机理分析，介绍了各种影响因素及其灵敏度。
- Commutation failures are one of the common faults in HVDC systems. 换相失败是直流系统的最常见故障之一。
- A multi-infeed HVDC system model including AC/DC parallel lines was established, and the relation between its mutual admittance and converter commutation failure was analyzed. 建立了2条交、直流并联的多馈入高压直流输电系统模型，并对此模型的直流输电线的耦合导纳和换相失败关系进行详细的理论分析研究。
- A multi-infeed HVDC system model including AC/DC parallel lines was established,and the relation between its mutual admittance and converter commutation failure was analyzed. 建立了2条交、直流并联的多馈入高压直流输电系统模型,并对此模型的直流输电线的耦合导纳和换相失败关系进行详细的理论分析研究。
- CHEN Shuyong,LI Xinnian,YU Jun,et al.A method based on the sin-cos components detection mitigates commutation failure in HVDC[J].Proceedings of the CSEE,2005,25(14):1-6. [14]陈树勇;李新年;余军;等.;基于正余弦分量检测的高压直流换相失败预防方法[J]
- The extinction angle of the DC converter,which is usually used to study the commutation failure of the DC inverter,is an important parameter in the DC transmittal system. 直流换流器熄弧角是直流输电系统的重要电气量,常被用于判断直流输电系统逆变器的换相失败。
- Through the test and analysis, the new topic of preventing incorrect action of protection in HVAC power network caused by commutation failure in DC converter station was discussed, and the effective countermeasures were put forward. 通过分析和试验,引出了超高压交直流电网并联运行时,如何防范直流换流站换流失败引起高压交流电网中继电保护不正确动作的新课题,并进行了探讨,提出了有效的防范措施。
- This paper compares the commutation failure different results caused by AC system fault and missing pulse in the condition of prediction extinguish angle in ABB HVDC control and protection system. 比较了在ABB直流控制保护系统中采用预测型关断角的前提下,由于交流系统故障和丢失脉冲所引起换相失败的不同后果。
- Chen Shuyong,LiXinnian.Yu Jun,et al.A method based on the sin-cos components detection mitigates commutation failure in HVDC[J].Proceedings of the CSEE,2005,25(14):1-6(in Chinese). [14]陈树勇;李新年;余军;等.;基于正余弦分量检测的高压直流换相失败预防方法[J]
- On the basis of the introduction of commutation failure principle,analysis of commutation failure in Three Gorges-Guangdong HVDC system Echeng station is made according to the transient fault record. 在简要介绍换相失败基本原理的基础上,根据现场的暂态故障录波图,对三广直流鹅城换流站发生换相失败的原因进行了详细分析。
- consequential commutation failure 连续换向失败
- He tried to put a bold face on his failure. 他对自己的失败装出一副满不在乎的样子。
- The cake we made was somewhat of a failure. 我们做的蛋糕不大成功。
- In AC/DC parallel systems, commutation failures result in much power flow being transferred to the parallel AC transmission corridor, and short time commutation failures don't cause system instable. 在交直流并联系统中，换相失败会使得送端系统大量功率涌向并联交流通道，由于换相失败时间比较短，一般不会造成系统失稳；
- Research on Commutation Failure in HVDC Connected to Weak AC System 联于弱交流系统的HVDC换相失败研究
- Criteria for Commutation Failure in HVDC Transmission System 高压直流输电系统换相失败的判断标准
- Commutation Failure Factors Analysis In HVDC Transmission System 直流输电系统中逆变器换相失败的因素分析
- He was bewailing his failure in the examination. 他为考试不及格而悲伤。
- She was constantly spurred on by a fear of failure. 对失败的恐惧不断地激励着她。
- He was stripped down for his failure in the exam. 他考试不及格受到严厉责骂。
