Because of its unbalanced direct current resistance the four-helical structure of low voltage leads used by traditional power transformers resulted in circumfluence inside the transformer which increased loss and reduced efficiency .

电力变压器传统的低压引线四螺旋结构由于 直流电阻 不 平衡的原因，导致变压器内部产生环流从而增加了变压器损耗，降低了效率。

To ensure reliable no-action of differential protection on external short-circuit fault the increasing of unbalanced current should be taken into account in maximal unbalanced current calculation which is caused by only restraining the ratio error of current transformer .

为保证差动保护区外短路故障时可靠不动作，在计算最大 不平衡电流时应考虑仅限制电流互感器变比误差导致不 平衡 电流增大因素。

Computation Method for Unbalanced Heavy Current Circuit Electrical Parameters

不 平衡大 电流线路电参数的计算方法

The misoperation of transformer differential protection caused by transient unbalanced current resulted from saturation of CT is still a difficult technical problem .

外部短路时，由于电流互感器（CT）饱和所引起的暂态 不 平衡 电流造成的变压器差动保护误动作，一直是变压器差动保护中的一大技术难题。

The basic principle of the track circuit and the generating mechanism of the unbalanced traction current on the track circuit are also introduced and analyzed .

介绍和分析了轨道电路的基本原理及 不 平衡牵引 回流在轨道上的产生机理。

Traditional percentage restraint differential protections may result in malfunction and non-operation owing to unbalanced current of external faults and efflux currents of internal faults .

对于传统比率制动式电流差动保护，在外部短路时电流互感器深度饱和误差造成的 不 平衡 电流，及当内部短路时可能存在的流出电流，均可能引起差动保护误动或拒动。

The Ideal Compensative Current of SVC Reactive power compensation for unbalanced current

静止无功补偿装置的理想补偿 电流

The harmonic current detecting method based on d-q coordinate transformation is not influenced by voltage and can be applied to unbalanced load current .

基于d-q坐标变换的谐波电流检测方法不受电压影响，并能应用于负荷 电流 不对称的情况。

In the mean time the malfunction of protection caused by the oscillation of the power system during the broadening time of post-accelerating protection can also be prevented by checking whether the zero-sequence or negative-sequence current is heavier than the maximal unbalanced output current when the circuitry works well .

此外，根据零序或负序 电流是否大于线路无故障运行时最大 不 平衡输出，防止此后在后加速保护展宽的时间内因系统振荡而引起的保护误动。

The Deduction and Analysis of the Protection Formula of the Neutral Unbalanced Current in Double-star Connection

双星形中性点 不 平衡 电流保护的公式推导与分析

When the unbalanced traction current is larger than a certain limit the conductive interference can be received by the receiver of the track circuit which can cause the misoperation of the track circuit and affect the safety of the train operation .

当 不 平衡牵引 电流超过一定的限值时，产生的传导性骚扰会被轨道电路接收端接收，从而引起轨道电路误动，影响行车安全。

Shunt capacitor unbalanced current protection fails to identify the faulted phase and three-phase balanced failures and causes misoperation when failures exist in two or three phases simultaneously .

不 平衡 电流保护不能够识别故障相、不能够对三相平衡故障保护以及在多相同时发生故障时会发生误操作。

The DC additional magnetic features can make the BCH-2 model differential relay to avoid reliably from the exciting surge produced by non-cycle component of transient unbalanced current under external short-circuit and put-in of idle transformer in order to prevent the protective device from maloperation .

直流助磁特性能使BCH-2型差动继电器可靠地躲过外部短路时暂态 不 平衡 电流的非周期分量及变压器空载投入时的励磁涌流，从而有效避免保护装置的误动作。

Research on unbalanced reactive current compensation method

不 平衡 电流无功补偿方法的研究

The Matlab simulation results show that the advantage-method combination of symmetrical component method and ip-iq law has high precision and reliability in unbalanced current detection .

Matlab仿真结果表明，结合对称分量法和ip-iq法优点的 不 平衡检测算法精度高、可靠性强。满足对矿热炉短网谐波、 无 功和负 序 电流检测的要求。

Unbalanced Current Generated in Differential Protection of Main Transformer and Its Countermeasure

主变差动保护 不 平衡 电流产生及应对措施

Conductor transposition is necessary to reduce unbalanced current in long transmission lines .

为降低长输电线路的 电流 不 平衡度，需要进行导线换位。

Effects of Rotor Eccentricity on Unbalanced Current of Salient-pole Synchronous Generator Main Protection

转子偏心对凸极同步发电机主保护 不 平衡 电流的影响

The ip-iq method is easily combined with symmetrical component method to analysis the problem of the unbalanced current detection . Furthermore we design filter-link to resolve the problem amplitude fluctuation of the short-net .

ip-iq法容易与对称分量法结合，共同分析 不 平衡 电流问题。然后，设计波动滤除环节，解决短网电流存在的电流幅值波动问题。

This paper describes measurement and analysis technique for a conductive interference on an electrified railway and provides the testing method of noise source in an electrical locomotive and of unbalanced current in a track circuit .

提供准确地测试和分析传导性干扰的技术、电力机车干扰源及轨道电路 不 平衡 电流的方法。

Back in 2004 I warned that the US had imperceptibly come to rely on East Asian capital to stabilise its unbalanced current and fiscal accounts .

还是在2004年时，我曾经警告，美国已在不知不觉中，开始依赖东亚资金稳定其 失衡 的 经常帐户和财政账户。

The innovation of the model is to use two linear current excitations to simulate the unbalanced traction current and set different material parameters for the rails to simulate the imbalance of the impedance and the leakage conductance .

该模型的创新之处在于，采用两个同向线电流激励以模拟轨道上的 不 平衡牵引 回流注入，对两根轨条设置不同的材料参数以模拟阻抗不平衡和泄露导纳不平衡。

And the conductive interference caused by the unbalanced traction current is the main interference source of track circuit .

其中由 不 平衡牵引 回流引起的传导性干扰是轨道电路的主要干扰源。

Measurement for Unbalanced Current of Series Capacitor Compensation Equipment

浅析串联补偿电容装置 不 平衡 电流的测试

The measuring frequency is used for eliminating unbalanced current of negative sequence extracting fault components and measuring impedance . The algorithm provides relaying device with accurate information so that the performance of relaying device can be improved .

由算法测得的瞬时频率可以用来消除负序 不 平衡 电流、准确地提取故障分量和测量距离阻抗值，使继电保护装置能获得准确的参数信息，以便进一步提高当前保护装置的动作性能。

Partial discharge and monitoring of dissolving gas in oil for transformer dielectric loss factor and capacitance and three-phase unbalanced current for capacity type equipments monitoring of resistance current for metal oxide lightning arrester are mainly introduced .

主要介绍局部放电和油中溶解气体监测；对电容式设备，主要介绍介质损耗因数、电容量及三相 不 平衡 电流监测；

Discussion on the Cause of Generation and Restraint Measures for Unbalanced Current in Differential Relay Protection

浅谈变压器差动保护中 不 平衡 电流的产生原因和克服方法

This model which can be applied to three-phase unbalanced distribution system has the capacity of capturing unbalanced current in the system .

该模型具有捕获系统中的 不 平衡 电流的能力，可以适用于配电网三相不平衡的情况。