• Path, so that two paths are always in series in the event of an earth fault.

    接地极必须始终单独极,因而出现接地故障时,另两极始终串联

    danci.911cha.com

  • With very high sensitivity the restricted Earth Fault Protection(REF)is widely used for generator, transformer and reactor as internal winding earth fault protection.

    零差保护具有很高灵敏度广泛应用发电机变压器电抗器等元件作为内部绕组接地故障保护

    dict.cnki.net

  • It can detect the location and transitional resistor of one point earth fault, and the transitional resistor and short current between two earthed points of two points earth fault.

    保护测定一点接地故障位置一点接地过渡电阻两点接地过渡电阻大小以及地点短路电流

    dict.cnki.net

  • Moreover, by using integer N wavelet transform, this paper analyzes earth fault on rotor of generator, and get significant results.

    此外该文利用两种小波变换发电机转子一点接地故障信号进行了分析,得出了意义结果

    dict.cnki.net

  • Fault location in a neutral ineffectively grounded system when a single-phase-to-earth fault happened is a problem unsolved in the world.

    中性点非有效接地系统中的线路单相接地故障定位一个至今国内外还没有解决难题

    dict.cnki.net

  • Audio visual alarm for engine fault, reverse power, over current, earth fault and circuit breaker status.

    警报状态指示灯,包括机组故障功率负载、接地故障制通路

    www.myjidian.com

  • The principles of using signal injection method to detect single-phase earth fault of distribution network at present are compared and analyzed.

    目前采用信号注入检测单相接地故障原理进行比较分析

    www.dictall.com

  • Short-circuit and earth fault indicator (EKL-4) is used to detect medium-voltage distribution system short-circuit and ground fault devices.

    短路接地故障指示器EKL-4用于检测中压配电系统短路接地故障装置

    www.cntrades.com

  • The structure, work principle and field application of a monitoring system for earth fault in non-solidly earthed network are presented.

    介绍小电流接地故障监测系统构成工作原理现场应用情况。

    www.dictall.com

  • It is immune from the unbalanced status of network and the values of earthed resistance. To the complicated intermittent arc-earth fault, the proposed method also works well.

    方法电网平衡情况接地电阻大小影响,复杂间歇性电弧接地故障同样有效

    dict.cnki.net

  • The earth fault protection and protective electric devices of TT and TN system and the application conditions were analyzed.

    分析了TTTN系统接地故障保护保护电器及其应用条件

    dict.cnki.net

  • By employing the DC earthed protection theory, this paper analyzes the characteristics of the converter transformer earth fault and the influence of converter commutation.

    简要介绍直流接地过流保护原理基础上,分析了流变阀侧接地故障故障特征以及流阀相过程对故障电流的影响

    www.dictall.com

  • The protection for earth fault line selection and fault point location by S injecting current in neutral isolated power system is presented.

    介绍了基于S注入法”的小电流接地系统单相接地故障选线定位保护

    dict.cnki.net

  • The transfer function algorithm for locating single phase to earth fault in power distribution networks consists in injecting high frequency signals to obtain information about the fault.

    配电网接地故障定位传递函数采用了注入高频信号获得故障信息手段。

    www.dictall.com

  • The single-phase earth fault has the highest probability in the distribution network, accounting for about 80%.

    单相接地故障配电网发生几率最高故障类型,所有故障次数的80%。

    dict.cnki.net

  • Existing earth fault protection in non solidly earthed network are not satisfactory in practical application due to the nature of weak fault current and unstable arc.

    由于故障电流微弱电弧不稳定原因,小电流接地故障检测始终没有彻底解决。

    dict.cnki.net

  • In the system of neutral indirectly grounded system, there is high probability of the single phase-to-earth fault.

    小电流接地系统中,发生单相接地故障概率很高

    dict.cnki.net

  • The second is distinguishing of single-phase-to-earth fault intelligently referring to the changes of the capacitive currents of the lines and the artificial neutral voltage.

    第二,根据线路电容电流人工中性点电压变化智能判别单相接地故障

    dict.cnki.net

  • A new method of switching on parallel medium resistance to select the fault line instantaneously when the single-phase earth fault occurs in the arc suppression coil grounded system is proposed.

    介绍了中性点不接地系统和经消弧线接地系统中普遍采用的接地选线方式原理及优缺点,提出弧线接地系统单相接地故障瞬时投入并联电阻选线方法

    www.dictall.com

  • In this paper a novel intelligent distribution equipment we developed is presented, mainly for suppressing arc in the resonant grounding distribution networks and detecting the earth fault line.

    介绍了我们研制种新型智能配电设备用于配电网中性点谐振接地系统快速故障线路选线。

    dict.cnki.net

  • Several different protection ways for earth fault are introduced and discussed from earth-fault protection, zero-sequence protection, residual current protection and other aspects.

    介绍了接地故障保护几种不同方式接地故障保护、零电流保护剩余电流保护方面进行了论述,指出只有电位联结相结合,才能完善保护作。

    www.dictall.com

  • The patent arc-suppression coil has been adopted in this system, whose control has two basic functions: controlling arc-suppression and detecting earth fault line.

    系统装置采用新型专利分裂大漏抗可控调节消弧线作为消补偿部件,控制器集成控制接地故障选线两大功能

    dict.cnki.net

  • Using transient traveling waves generated by fault to locate single-phase earth fault or short circuit fault in distribution feeders mixed with overhead lines and cables is proposed.

    该文提出利用线路故障产生实现配电架空线电缆混合线路单相接地及相间短路故障测距,分析了故障初始行模分量的态特征。

    dict.cnki.net

  • This text expatiated the principles of setting and methods of design of earth fault fire alarm system, and introduced the applications of system in some Olympic venues.

    本文阐述漏电火灾报警系统设置原则设计方法简单介绍部分奥运场馆应用情况。

    www.dictall.com

  • When an one-point or multi-point earth fault occurs, the monitor can quickly detect the serial number and polarity of the branch circuit earthed, and meantime give alarm to the operator on site.

    直流系统发生一点多点接地装置迅速检查发生接地的直流支路编号接地支路极性同时报警提示现场运行人员

    dict.cnki.net

  • This paper provides a new exciting circuit one or two points earth fault protection based on switchable sampling principle.

    提出一种新的切换采样原理励磁回路一点接地两点接地微机保护

    www.dictall.com

  • Digital transformer differential protection may falsely take effective when external single-phase earth fault occurs at star side or the line endures lightning strike on single phase.

    数字式变压器差动保护星形发生外部单相接地线路单相雷击情况下,差动保护有时会动。

    dict.cnki.net

  • Digital transformer differential protection may falsely take effective when external single-phase earth fault occurs at star side or the line endures lightning strike on single phase.

    数字式变压器差动保护星形发生外部单相接地线路单相雷击情况下,差动保护有时会动。

    dict.cnki.net

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