电网频率 meaning in Chinese
line frequency
Examples
- Based on orthogonal transform , a new method of tracking power grids frequency has been provided
摘要基于正交变换，提出了一种新的电网频率跟踪方法。 - Because the fundamental frequency of power system is not invariable , it needs to be tracked and measured
由于电网的基波频率并非始终不变的，因此需要对实际的电网频率进行跟踪检测。 - The main contents are as follows : 1 . analyze and calculate the influence on network frequency and power flows on tie line when 660mw generator unit trips out from hbpn
主要工作如下： ( 1 )分析并计算河北南网在发生660mw机组掉闸时，对电网频率和联络线潮流等方面造成的影响。 - Therefore , the paper mainly discusses the pluses and minuses of the multifarious frequency estimation algorithms , and develops an adaptive method of evaluation on dft for power system frequency , which is based on the equal - angle sampling principle
因此，本文着重论述了历史上各种频率测量算法的优缺点，并在自适应调整采样率的等角度采样原则的基础上，提出了一种基于dft的电网频率测量的自适应估计算法。 - The widely applications of nonlinear instruments have produced many high order harmonics , they are flowing into the power network and greatly influence the quality of electric power . and the frequency is n ' t constant but changed around 50hz
电网中非线性设备的使用日益增多，所产生的高次谐波电流大量注入电力线路中，使得电网电压、电流波形发生畸变，同时电网频率并不是固定不变的，而是在50hz附近波动。