1) permanent fault
永久性故障
1.
Single-phase adaptive auto-reclose technology possesses many advantages compared with traditional reclosing technology,as the important measure of avoiding permanent fault.
自适应重合闸技术作为避免重合于永久性故障的重要措施,具有很多传统重合闸技术所不具有的优势。
2.
The current situation of the research on distinguishing permanent faults from instantaneous faults in transmission lines is presented.
介绍了输电线路永久性故障判别的研究现状,现有的永久性故障判别原理有2种,即基于恢复电压和基于瞬时故障电弧特性。
3.
At present, most self-adaptive auto-reclosure schemes are dependent on the voltages sampled from the transmission lines to distinguish between the instant faults and the permanent fault, therefore have some limitation in the applications.
因目前多数自适应重合闸方案,均须采用故障相的线路侧电压进行瞬时性和永久性故障的区分,具有一定的局限性,于是提出了一种基于模电流双窗函数暂态能量比的判据。
2) permanent faults
永久性故障
1.
For transmission lines with no shunt reactor,the magnitude and the angle of the recovery voltage of fault phase under permanent faults are quite different from that under transient faults.
仿真实验验证该判据能可靠区分瞬时性故障和永久性故障,并且有较高的灵敏度。
2.
Two methods, voltage detecting method and compensated voltage detecting method, are proposed for detecting the permanent faults and transient faults of multiple line traction network.
提出了两种识别复线牵引网瞬时性与永久性故障的方法———电压识别法和补偿电压识别法。
3.
Finally the relay can identify that the line has transient faults or permanent faults by the value of secondary arc current.
具体方法是在单相重合前,保护使用贝瑞隆模型计算线路故障点两侧的电流,进而求出故障点处的潜供电流,然后根据其有无,来区分线路是永久性故障还是瞬时性故障,从而达到避免重合于永久性故障的目的。
3) permanence lightning fault
永久性雷击故障
4) threephase bolted faults
三相永久性故障
5) permanent fault log
永久性故障记录
6) permanent fault logging
永久性故障存入
补充资料：股票的永久性
股票的永久性——
永久性是指股票所载有权利的有效性是始终不变的，因为它是一种无限期的法律凭证。股票的有效期与股份有限公司的存续期间相联系，两者是并存的关系。理解股票的永久性应该注意两点：第一、购买股票虽然属于永久性投资，但从流动性特性可以看到，股票持有者可以出售股票而转让其股东身份；其二，一旦股份有限公司不再存在，其发行的股票也就分文不值。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条