Abstract
This paper studies the transient process of synchronous generator after three-phase short circuit, deduces the expression of stator current in the transient process of synchronous generator, and verifies the theoretical conclusion through simulation. After the short circuit occurs, the electromagnetic transient process is complex. In the electromagnetic transient process, the stator current and rotor current of synchronous generator appear attenuation oscillation due to direct-axis reactance, cross-axis reactance, transient reactance and sub-transient reactance. Based on the basic principle of synchronous generator, this paper analyzes the analytical expressions of stator straight axis current, stator cross axis current and total current. After that, the simulation model is built in Matlab/Simulink, and the simulation results are consistent with the theoretical analysis results. This simulation method provides convenience for analyzing the transient process of synchronous generator and has good engineering application value.
Highlights
Synchronous generator is the core equipment of modern power system
This paper studies the electromagnetic transient process of the synchronous generator [2]
The variation of terminal voltage, stator current, excitation current, power angle and rotational speed of synchronous generator need to be studied in electromagnetic transient process.A synchronous generator model is built in MATLAB/Simulink simulation environment
Summary
Synchronous generator is the core equipment of modern power system. In the event of three-phase short-circuit fault, the transient process of synchronous generator has an important influence on the safe operation and protection of synchronous generator [1]. After the large disturbance of the power system, the synchronous generator experiences the electromagnetic transient process and the electromechanical transient process. This paper studies the electromagnetic transient process of the synchronous generator [2]. The variation of terminal voltage, stator current, excitation current, power angle and rotational speed of synchronous generator need to be studied in electromagnetic transient process.A synchronous generator model is built in MATLAB/Simulink simulation environment. It is important to study the protection device of generator that studies the voltage and current change of synchronous generator in three-phase short-circuit fault
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
