《电路》（英文版）7-6 Phasor relationships for、and R:

8-1 Nodal, mesh and loop analysis Nodal analysis:

The phasor diagram is a name given to a sketch in the complex plane of the phasor voltages and currents throughout a specific circuit

sinusoidal voltage: V =V29 A sinusoidal current: I= We define the complex powerS=vi=V∠9,I∠-9 =V∠,-=V∠=+ jVI sin=P+j P=VIcos 9 --active(average) power

《电力系统自动化》课程教学资源（理论课程资料）自动并列_频差调节的方法_发电厂同期并网调试过程中应注意的问题

《电力系统自动化》课程教学资源（理论课程资料）自动并列_数字型并列装置的组成_大型发电厂同期系统设计方案

Let us now define resonance. In a two-terminal electrical network containing at least one inductor and one capacitor, resonance is the condition which exists when the input impedance of the network is purely resistive

《电力系统自动化》课程教学资源（理论课程资料）自动并列_准同期自动并列装置的实现原理_一种新型微机自动准同期装置

《电力系统自动化》课程教学资源（理论课程资料）自动并列_准同期自动并列的分析_浅谈发电机的同期并列

Find the resonant frequency arallel resonance