The zero sequence current transformer is open-close type.
本型零序电流互感器为开合式。
The zero sequence current transformer is full enclosed type.
本型零序电流互感器为全封闭式。
The zero-sequence current protection is an important means of power system ground protection.
零序电流保护是一种重要的接地保护方法。
Two methods to calculate the zero sequence current are deduced based on the symmetrical component method.
根据对称分量法，推导了两种软件计算零序电流的方法。
Larger system voltage unbalance degree causes larger capacitor voltage pulsation and negative sequence current.
不对称度的增加将进一步增大电容电压的脉动和负序电流的大小。
General conclusions are extracted and the difference of zero sequence current distribution from classical theory is found.
最后总结出一般性的结论，其中关于零序电流的分布与经典理论有较大的区别。
The properties and selection of the zero-phase sequence current transformer core and tripper for GFCI are in detail described.
详细叙述了漏电开关零序电流互感器及其铁芯，脱扣器的工作特性、材料选用。
This paper analyzes the phase selection theories of sequence current, the current break variable and the compensation voltage.
分析了反映序电流、电流突变量和补偿电压的选相原理，提出了当电压互感器断线时为防止误动应闭锁补偿电压选相。
A novel principle of negative-sequence current compensation based adaptive zero-sequence over-voltage protection is therefore proposed.
该文提出一种新的基于负序电流补偿的自适应零序过电压保护原理。
It can be combined with a set of transformer main protection by combining negative-phase sequence current sudden-change starting element.
它也可与负序电流突变量起动元件配合，构成一套变压器主保护。
The major function and features of the calculating program for Settings of zero sequence current protection of Hubei power system were described.
介绍了湖北电网零序电流保护整定计算程序的主要功能和特点。
The extracted fault characteristics of transient zero sequence current is looked as condition attributes and the multiple of signal enhancement is.
将提取的暂态零序电流故障特征作为条件属性，信号增强倍数作为决策属性，构成一个决策系统。
Harmonics, reactive power, voltage flicker and negative-sequence current of power grids can affect the power quality and harm the power equipment badly.
电网中存在谐波、无功、电压闪变及负序电流等问题，严重影响电能质量，危害电力设备。
This paper also proposed a new fault locating method based on either the active component increment or the amplitude increment of zero-sequence current.
提出了零序电流有功增量和零序电流幅值增量作为判据的故障点定位方法。
Generalized integrator was used to realize static error free tracking control of positive and negative sequence current under two-phase static coordinate.
并采用广义积分器原理实现对三相电流在两相静止坐标下的控制，实现了正负序电流的无静差跟踪控制。
Based on the symmetry component theory, a method of the motor protection is presented by measuring positive, negative and zero sequence current component.
基于对称分量法理论，提出了基于检测正序、负序、零序电流分量的电动机保护方法。
Measures, such as the floating of threshold, braking by positive sequence current, driving up the threshold during power swing, etc are suggested to prevent th.
采用浮动门槛、正序电流制动和静稳破坏后提高动作门槛值的方法，来防止系统振荡时误启动。
Experimental results prove the proposed control method can compensate the harmonic, negative sequence and zero sequence current components in the three phase four wire.
实验结果表明，该装置可对三相四线制系统中的谐波、负序、零序等电流分量进行补偿。
Active power filter can compensate current components which include distortion and negative sequence current components when it is used in unbalanced three-phase circuit.
电力有源滤波器能动态补偿不对称三相电路的畸变电流、负序电流分量。
The zero-sequence angle-frequency characteristic of the lines are studied based on it and the characteristics of transient zero-sequence current in different frequency ba.
根据这一特点，对小电流接地系统中线路的零序参数相频特性进行研究，得出系统发生单相接地故障时不同频带上暂态零序电流特性。
This control principle can improve the control of power quality and effectively compensate the harmonic currents at load side, reactive power and negative sequence current.
该控制方法能改善系统电能质量的调节，有效地补偿负荷侧谐波电流、无功功率和负序电流。
The SVC can not only compensates the reactive power, but also dish the negative sequence current produced by the unbalance loads, which mostly depend on the control scheme.
静止无功补偿器(SVC)在补偿负荷无功的同时，还具备补偿三相负荷不平衡的能力，其关键在于SVC所采取的控制策略。
Over current protection, negative current protection, zero sequence current protection, over time of start protection and low voltage protection is configured in the device.
本装置配有过流保护、负序电流保护、零序电路保护、起动时间过长保护、低电压保护。
The fault phase selectors, including the phase current difference suddenly-change and the sequence current, may misoperate in some cross country faults and conversion faults.
研究表明相电流差突变量、稳态电流序分量等选相元件在发生某些跨线及转换性故障时会误选相。
This is particularly the case for the third harmonic, which causes a sharp increase in the zero sequence current, and therefore increases the current in the neutral conductor.
尤其是第三个谐波，这将导致零序电流急剧增加，从而增加了中性线的电流。
The zero sequence current transformer is full enclosed type. The secondary windings and iron core are insulated by epoxy resin. The middle hole is used for cable going through.
本型零序电流互感器为全封闭式。二次绕组及铁芯均浇注在聚脂树脂内。中间窗孔供三相电缆穿过。
The unbalanced degrees of current in primary winding under different load conditions are discussed, which are based on the general expressions of negative phase sequence current.
结合负序电流的通用表达式，讨论了在不同负荷条件下的原边电流不平衡度。
It is showed that this transformer has the advantages of boosting, rejecting the negative sequence current, increasing the output capacity and raising the capacity utilization ratio.
结果表明，该变压器具有增压、抑制负序电流、增大输出容量和提高容量利用率等优点。
The characteristics of arc furnace are low voltage, big current and nonlinear load. Much negative sequence current is produced during running. As a result, the power net is unstable.
电弧炉具有低电压、大电流而且负荷非线性的特点，在其运行过程中产生大量的负序电流，导致电网不稳定。
Zero-sequence current criterion, negative sequence current criterion and phase current variation can be used to improve the performance of breaker failure protection for ACF sub-bank.
针对单纯采用相电流判据的不足之处，本文提出增加零序电流、负序电流及电流变化量判据，以有效地避免保护误动或者拒动。
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