The phase difference often needs to be measured between two signals with the same frequency in power system, such as power voltage and power current signals.
在电力系统中常常需要对两个同频率信号(如工频电压和工频电流)之间的相位关系进行准确的测量。
The intelligent power voltage regulator based on PLC control technology was designed.
设计了基于PLC控制技术的智能控制电力调压器。
The paper discusses the technique of increasing surface power voltage class from 380v to 660v.
本文就地面供电电压等级由380v提高到660v电压技术问题进行探讨。
The restrictive effect of auxiliary power voltage and the safety measures of under-excitation operation are also included.
对厂用电电压的限制问题及进相运行的安全措施也作了讨论。
The main flux of asynchronous motor varies with the power voltage and the para-meter of excited inductance becomes a variable.
电源电压变化时，异步电动机主磁通随之变化，与之相应的激磁电感参数将是一个变数。
The cause of the improper trip of 4 pole circuit breaker was analyzed. A subsidiary power voltage is applied to solve the problem.
分析了4极断路器非正常跳闸的原因，提出采用施加外接辅助电源电压的解决措施。
The power voltage stabilizing circuit is connected with the main control cell, and the power voltage stabilizing circuit provides stable power to the main control cell.
电源稳压电路与主控制单元相连，并为主控制单元提供稳定的电源；
The cause of the improper trip of 4 pole circuit breaker was analyzed. A subsidiary power voltage is applied to solve the problem. It is proved in practice that this measure is feasible and effective.
分析了4极断路器非正常跳闸的原因，提出采用施加外接辅助电源电压的解决措施。
The results show that much techno-economic benefits can be obtained by using new control strategy of reactive power-voltage and extending the utilization of FACTS controller in distribution network.
论文的研究结果表明，在配电网中，采用新的无功电压控制策略和应用FACTS控制器可以获取很好的技术经济效益。
The real-time discrimination of the main-bus reactive power-voltage static characteristics is an important content for the optimized caculation of the global reactive power-voltage.
母线无功——电压静态特性实时辨识是进行无功电压全局优化计算的一项重要内容。
After illustrating the operation theory of six pulse converter, author gives the calculating method of UHVDC transmission parameters such as operating power, voltage, current and tap changer range.
在此基础上确定了溪洛渡—株洲特高压直流输电工程换流变压器的额定功率、电压、电流和分接头的变化范围等参数。
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。
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。
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