A current i at Li produces an open circuit voltage u,at L2s dyal

《电路》（英文版）12-1 Three-phase voltages

A A--connection three-phase sources a, b, c--line ter min als

If a positive current is flowing into the(+) end of the current coil while the(+) terminal of the voltage coil is positive with respect to the unmarked end, an upscale reading is obtained

Let us add and subtract on the right side of I2 we have

一、物理表达式 二、参数表达式 三、实用表达式

电子科技大学：《高等电力系统分析》课程教学资源（课件讲稿）11 电力系统暂态稳定概述

电子科技大学：《高等电力系统分析》课程教学资源（课件讲稿）06 简单电力系统的静态稳定

the short-circuit input impedance I12=0 the short-circuit forward current gain I1V2=0 Let 1=0 he open-circuit reverse voltage gain I1=0 the open-circuit output admittance

13-6 Interconnection of two-ports 1. Series connection