提出一种利用同步电压相量进行输电网络故障定位的新方法。
A novel fault locating method for transmission network using synchronized voltage phasor is presented.
定性地分析电力系统正常运行状态和故障后的稳态量时，电压相量图法是十分有用的工具。
The voltage vector diagram is a very useful method that can make a qualitative analysis of the steady values of power system in normal and fault conditions.
基于GPS的同步相量测量单元(PMU)实现了电力系统的功角或母线电压相角直接可测。
GPS-based synchronized phasor measurement unit (PMU) can measure the power Angle or phase Angle of bus voltage directly.
考虑到三相电压或多或少有些不平衡，提出了一种新的基于正序基波电压合成相量的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.
基于GPS的同步相量测量单元（PMU）是一种新型的高精度测量装置，能够测量母线电压相量和支路电流相量。
Phasor measurement unit(PMU)based on GPS is a new and precise measuring device, which can be used to measure bus voltage phasor and branch current phasor.
基于GPS的相量测量装置(PMU)可以直接测得节点电压相量，包括电压有效值和相角。
GPS-based phasor measurement unit (PMU) can measure the voltage phasor directly, including the effective value and phase Angle.
近几年开始装备于电力系统的基于GPS的同步相量测量单元(PMU)能够测量节点的电压相量，而且具有相当高的精度。
GPS based synchronous phasor measurement Units (PMU) which have been successfully developed and equipped in power systems in recent years can provide bus voltage phasor measurements.
该方案通过电流矢量空间角判断感应电机三相定子电流正负，推导出三相定子电压的补偿量。
This scheme utilize the current vector space Angle to judge the three stator current polarity, deduce the three stator voltage compensations.
理论分析和仿真计算表明，使用电压量的选相元件能够正确地判别各种故障类型，满足高压线路保护的需要。
Theory analysis and simulation results show that the new phase selector can determine fault types properly and be used in transmission line protective relay.
针对输电网提出了一种基于同步相量测量信息的电压稳定指标。
A voltage stability index based on synchronized phasor measurements is presented for trans - mission systems.
本实用新型公开了一种电力电子技术中电压相量关系的同步分析盘。
The utility model discloses a synchronous analysis disk of voltage phasor relationship in the technical field of power electronics.
PMU精度足够高时，直接将P MU的量测值作为状态估计的状态解，PMU所在节点的电压相量不参加状态估计。
As for the measurements with enough precision, the measurements of PMU are regarded as state results directly.
然后，采用相量法求解出正弦电压激励下各并联支路的电流；
Then, the current of the paralleled branch coils excited by sine voltage is obtained by way of phasor.
由传输线上电压及电流沿线分布之频域相量，可转换为传输线上各频率成份弦波电压及电流沿线之时域传播。
The time harmonic voltage and current wave propagation along a transmission line can readily be transferred from frequency domain voltage and current phasor distribution along the line.
本文分析了三相电压型PWM整流电路的工作原理，给出了整流电路的相量图和一系列公式。
In this paper the principle of a 3-phase voltage-typed PWM rectifying circuit is analyzed and both the vector diagram of rectifying circuit and a series of formula are also offered.
本文分析了三相电压型PWM整流电路的工作原理，给出了整流电路的相量图和一系列公式。
In this paper the principle of a 3-phase voltage-typed PWM rectifying circuit is analyzed and both the vector diagram of rectifying circuit and a series of formula are also offered.
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