• 这些可以正序

    These columns can be sorted in ascending or descending order.

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  • 提出基于故障分量电抗方向元件

    A new directional element based on the fault component positive sequence reactance (FCPSR) is presented.

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  • 提出种电网电压分量近似计算及实现方法

    A new method for the positive sequence voltage detection is presented.

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  • 第二方法得出多重复杂故障情况下增广网络

    The second method can be used to develop a modified positive network in the case of multi- complex faults.

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  • 三相求法派克变换很密切联系,求出的是三相基波分量。

    The three phase detecting method closely connects with the Park transform and the result is the positive sequence part of the fundamental frequency.

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  • 应用瞬时对称分量变换提取电压电流故障分量空间向量

    The transformation of the instantaneous value symmetry component applied, the positive sequence space vector of fault component of the voltage and current can be derived.

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  • 这种方法需要硬件同步电路实时地计算电源电压中的基波分量

    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.

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  • 运用电报方程推导出线-地耦合传输线分量分量传输线方程。

    The zero sequence component and the positive sequence component equations of transmission lines are derived on the basis of telegraph equations.

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  • 文中还提出了低压系统中只用阻抗表达的单相短路电流简化计算公式

    In the paper, the reduced single phase short-circuit current equation expressing as positive sequence impi dance only is showed.

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  • 根据集中参数线路模型算法实测距离换算成与模型匹配测量阻抗

    The measured distance of the lump parameter circuit model can be converted to the correspondingly matching positive sequence measured impedance.

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  • 阻抗低电势阻抗采用阻抗,有效地防止外部短路造成的动作。

    It USES the positive impedance in static stability and low-voltage impedance which can effectively prevent the mal-operation in external faults.

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  • 基于对称分量理论提出了基于检测电流分量电动机保护方法

    Based on the symmetry component theory, a method of the motor protection is presented by measuring positive, negative and zero sequence current component.

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  • 典型六相输电系统中,、半零和半负故障分量系统阻抗变化影响。

    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.

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  • 三相系统中,功率积分作为计量标准,同样可以消除两方面的不利影响。

    These disadvantages could be eliminated in three-phase systems if the energy account based on the integral of the active power of the positive sequence component with the fundamental harmonic.

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  • 针对串联型交流电压调节器提出一种新的基波计算方法获取补偿电压的参考信号。

    A series ac voltage regulator based on a new fundamental positive sequence calculation method, which is utilized to generate the compensation voltage reference, is introduced in this paper.

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  • 采用浮动门槛电流制动和静稳破坏提高动作门槛值的方法,防止系统振荡误启动。

    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.

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  • 已有方法相比较方法不仅方程中,而且方程采用牛顿法修方程。

    Compared with the previous methods, the Newton-Raphson method is used not only for solving the positive equation, but also the negative and zero sequence equations.

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  • 考虑三相电压或多或少有些不平衡提出一种新的基于基波电压合成相量发电机并网条件核算法。

    Considering the imbalance of three phase voltages, a new arithmetic which verifies the generator paralleling based on the synthetic phasor of positive sequence fundamental voltage is proposed.

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  • 论述了利用瞬时无功功率理论三相不对称电流检测出三相正序有功电流并用计算出指令电流对系统进行补偿的原理。

    Based on the instantaneous reactive power theory the method correctly detects the active positive-ord current from unsymmetrical currents and applies calculated command current to compensate system.

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  • 基于高压输电线路分布参数模型,使用线路两端电压、电流正序和负分量,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.

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  • 首先运用对称分量将单相异步电动机分为正序系统系统,然后分别用矩阵分析两个系统各自的有功功率、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.

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  • 该方法首先运用对称分量线性叠加原理建立故障附加网络并且定义了故障匹配指标,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.

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  • 类型经典地层学中的类型相似,但是其内部各准层韵律为主

    The type of parasequence sets is similar to classic sequence stratigraphy, and the parasequence mainly consists of positive rhythm.

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  • 非线性电阻消谐方式下,温度系数(PTC)热敏电阻三次谐波滤波器可以较好地解决电压偏高的问题。

    Positive temperature coefficient (PTC) thermistor and triple frequency harmonic filter can reduce zero sequence voltage when a nonlinear resistance is used to prevent ferroresonance.

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  • 、负功率分量之和通常采用的“瓦特获得于是、负功率分量即可析离开来。

    Since the sum of these two power components can be obtained by the usually used "two Wattmeter method" , then the components can be Separated.

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  • 结果证明利用态型分析确定林火等级可行可靠的,具有实用价值

    The result shows that it is feasible, dependable and practical to determine the rank of forest fire using the method of normally distribured sequential analysis.

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  • 拓扑线性空间局部凸性,该空间上连续线性函实现双分解基础

    The Local biorder-convexity is a base of the biordering positive decomposition of linear functionals.

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  • 电缆具有较低均匀()工作阻抗有利于改善供电品质

    Low and even forward (backward) and zero sequence impedance improves the quality of power supply.

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  • 如果处理使用者名称密码网域启动会参考这个属性

    This property is referenced if the process is being started by using the user name, password, and domain.

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  • 第四讨论指数模型极大似然估计强相合态性进行了证明

    In Chapter 4, we discuss and prove the consistency and asymptotic normality of maximum likelihood estimate to the exponential models.

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