提出了一种检测基波正负序分量的新方法。
A method of detecting the fundamental positive and negative sequence components is proposed.
提出一种电网电压正序分量的近似计算及实现方法。
A new method for the positive sequence voltage detection is presented.
三相求法与派克变换有很密切的联系，求出的是三相基波正序分量。
The three phase detecting method closely connects with the Park transform and the result is the positive sequence part of the fundamental frequency.
文中用六序分量法分析了同杆双回线上零序功率方向继电器的性能。
Based on the method of six sequence fault component, this paper analyses the performance of zero sequence directional relay on double circuit line on the same pole (DLSP).
这种方法不需要硬件同步电路，能实时地计算电源电压中的基波正序分量。
The proposed method doesn't need hardware synchronization circuit and can perform the calculation of fundamental positive sequence component of the supply voltage in real time.
运用电报方程推导出三线-地耦合传输线零序分量和正序分量传输线方程。
The zero sequence component and the positive sequence component equations of transmission lines are derived on the basis of telegraph equations.
小电流接地系统发生单相接地故障时，对零序分量而言，非故障线路相当于空载。
The healthy line is unloaded for zero-sequence component when a single-phase fault occurs in a non-solid earthed network.
提出一种用零序分量做动作量，负序分量做制动量的综合序分量接地距离继电器。
An earth fault distance relay based on the combined sequence components is presented.
同时对传统正负序分量瞬时计算方法和正负序同步旋转坐标轴定向方法进行了改进。
The thesis also improved the method of the instantaneous power component computation and the synchronous coordinate orientation.
由于该方法中没有用到线路两真个零序分量，消除掉耦合线路之间零序互感对测距的影响。
Because there is no need for acquiring the zero-sequence component, this principle can eliminate the effect of zero-sequence mutual inductance between coupling lines.
该方法采用高频电压载波注入方式形成高频电流矢量，其负序分量包含了转子空间位置信息。
The method employed high-frequency voltage-signal injection to make motor form a high-frequency current-vector, of which the negative component current contained rotor space-position information.
通过提取各种故障情况下电动机电流序分量的特点，在保护单元内为电动机提供简单完全的保护；
The simple complete protection for a motor in the protection units is described based on characters of motor's sequence currents in case of different 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。
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.
算法采用分布参数线路模型，利用了双端数据和六序分量法，并考虑了对不准确线路参数识别的问题。
The algorithm adopts the line' s model of distributing parameter, uses two-end data and six-order component and considers the problem to identifying inaccurate parameter.
基于对运行电流的各相序分量的分析，以微机构成监测保护装置，该装置功能强、成本低、可靠性高。
The monitor and protection device is made up of microprocessor and features stronger function, low cost and higher reliability.
电弧炉是一种严重的不对称冲击负载，它将产生大量的负序分量而污染电网，所以需要对其进行平衡化补偿。
Arc furnace is a typical unbalanced impact load. It pours a great deal of negative sequence component to power system, so measures shou ld be taken to compensate the arc furnace load.
文中提出一种新型的、高精度的故障分量——综合负序矢量的概念 ，并给出综合三相负序分量的实时算法。
The concept of a new- style and high- precision fault component, synthetic negative sequence vector SNSV is proposed in the paper.
当交流系统发生三相不对称故障时，忽略直流系统负序分量的准稳态模型将给交直流混合系统的仿真带来较大的误差。
The QSS (Quasi Steady State) model of converter which neglects the negative impedance of DC system will bring some errors when unbalanced fault occurs in AC system.
该文基于三磁柱变压器及三磁柱电感的动态方程建立了带三磁柱电感及三磁柱变压器的三相逆变器瞬时零序分量模型。
In this paper, the instantaneous model of zero-sequence circulating current between parallel three-phase inverters with three-pole reactors and three-pole transformers is established.
基于高压输电线路的分布参数模型，使用线路两端电压、电流的正序和负序分量，对高压输电线路两点异相故障提出了一种新的测距算法。
Based on the distributed parameter model for transmission line, a new fault location method for short circuit fault of two points on different phases of the power transmission line is presented.
分析表明，即使系统不存在零序回路，DVR都会在补偿控制中向系统注入微小的零序分量，该零序分量会对无零序回路系统侧电压造成不良影响。
It shows that DVR will inject small zero sequence component into the power system during compensation control even if there is no zero sequence circuit. This will influence the voltage on system side.
为此，提出了新的控制策略，该控制策略通过检测并消除指令中的零序分量，以破坏无零序电流回路系统的零序电压正反馈条件，消除DVR注入零序电压的不良影响。
So a new control strategy is proposed to detect and suppress the influence of zero sequence component injected by DVR. Simulation results show that the proposed strategy is co…
建立了基于模分量大小和三相及零序电流大小的模糊数学模型，能快速准确的识别振荡中发生的不对称故障。
Establish the fuzzy set based on modulus component, three phases and residual current, which can distinguishing unbalance faults from power swing rapidly and reliably.
对称分量法及其序网联接技术是电力系统故障处理的传统方法。
Symmetrical components method and its sequence network connection technique are conventional way on fault analysis of power system.
该方案包括了横差保护、故障分量负序功率方向保护和不完全纵差保护的综合应用。
The scheme includes the transverse differential protection, the directional relay action on negative sequence power of fault component and the incomplete differential protection.
提出了基于故障分量正序电抗的方向元件。
A new directional element based on the fault component positive sequence reactance (FCPSR) is presented.
该方法首先运用对称分量法和线性叠加原理建立故障后的附加正序网络并且定义了故障点的匹配指标，进而基于该指标运用遍历搜索方法寻找故障点位置。
Based on symmetrical component method and linear superposition principle, the additional positive sequence network after fault is established and the matching index on fault point is defined.
在典型的六相输电系统中，半正序、半零序和半负序故障分量不受系统阻抗变化的影响。
In typical six-phase transmission system, half positive sequence, half zero sequence and half negative sequence fault components are independent of the variance of system impedance.
首先运用对称分量法将单相异步电动机分为正序系统和负序系统，然后分别用矩阵分析了这两个系统中各自的有功功率、无功功率和视在功率。
Using the method of symmetric components and matrix, this paper analyses instantaneous power and the operation parameters concerning one-phase asynchronous motor in dynamic state.
根据对称分量法，推导了两种软件计算零序电流的方法。
Two methods to calculate the zero sequence current are deduced based on the symmetrical component method.
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