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。
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。
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。
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。
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。
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。
A new scheme to distinguish permanent fault and instant one occurred on the EHV transmission line is proposed.
该算法能正确区分稳态下的瞬时故障与永久故障;对暂态过程尚未结束就已经消失的瞬时故障,利用自适应整定方法亦能迅速正确识别,故不必采取传统的自动重合闸方案,提高了线路重合闸的成功率。
permanent failure
永久性故障（持续性故障）
Time-domain method to identify permanent fault of transmission line with shunt reactor
带并联电抗器输电线路永久性故障的时域判别方法
For phase-to-phase fault, it trips three phases and recloses three phases (checking synchronization and no-votage); when reclosing on permanent fault, it trips three phases.
使开关相间故障跳三相，重合三相（检定同期或无压），重合于永久性故障跳三相。
The ability of a material to become permanently deformed- stretched, drawn, or hammered without failure while maintaining an appreciable load.
变成永久性变形的能力-扩展，拉伸，或锤锻后在可预估的持续负载下不出现故障的能力。
The Fault Diagnosis of the Slope of the Permanent Ship Lock for the Three Gorges--Acoustic Emission Signal Analysis and Processing Research;
长江三峡永久船闸边坡故障诊断——声发射信号分析处理研究
Resections in children do not produce a permanent physiologic handicap.
在儿童中，肝切除不致引起永久性生理障碍。
Study on the Life of the Water Hydraulic Control Valves and Malfunction Analysis;
纯水液压控制阀耐久性实验研究与故障分析
semipermanent floating oil boom
半永久性的浮动栏油栅
semipermanent electronic storage
半永久性电子式存储器
branch long-lived assets
分支机构永久性资产
His work is ephemeral.
他的作品没有永久性。
are disappearing forever.
即将永久性地消失。
a molecule that is a permanent dipole.
是永久性偶极子的分子。
nonvolatile memory [ storage ]
固定[永久性]存储器
non-perpetual licence [taxi]
非永久性质的牌照〔的士〕
existing permanent unprotected file
现有永久性非保护文件
the Permanent Normal Trade Relations)
永久性正常贸易关系
permanent normal trade relationship
永久(性)正常贸易关系