同步发电机稳态运行方程中参数的概念解析

Concept Analysis for Parameters in the Steady-state Equation of Synchronous Generator

同步发电机稳态方程在"电机学"和"电力系统分析"课程中分别从电路和空间坐标系的角度出发进行建模,但在教学中很少有联系对比分析。首先,从同步发电机稳态电势的两种不同表达方法入手,分析了其基于派克(Park)变换空间域和等效电路时间域所反应物理量实质上的一致性;再具体结合教材中的一道经典习题,主要就容易引起学生疑惑和混淆的各个参数的概念进行深入解析和对比,建立起两门课程关于此部分内容之间的桥梁。为学生在学习过程中加深对相关物理概念的理解和融会贯通提供了新的参考途径。

At present,the steady-state equation of a synchronous generator is modeled from the perspectives of electric circuit and spatial coordinate system in the courses of Electrical Machine and Power System Analysis,respectively.However,there is few comparative analysis in the teaching practice.In this paper,based on two different expression methods of the synchronous generator’s steady-state electric potential,the consistency of the reflected physical quantity is analyzed based on the spatial domain of Park transformation and the time domain of equivalent electric circuit.With the combination of a classic exercise from the textbook,the concepts of parameters which will easily confuse students are analyzed and compared,and the connections between the two courses on this part of knowledge are set up.The result in this paper provides a new way for students to understand and master the relevant physical concepts in the learning process.