VBR model electromagnetic transient simulation method and system of synchronous motor

Abstract

The invention relates to a VBR model electromagnetic transient simulation method and a system of a synchronous motor. The method comprises the following steps: acquiring original parameters of the synchronous motor; arranging three controlled current sources on a simulation platform to serve as stator windings of the synchronous motor; setting the initial value of the state variable of the stator winding as 0 and taking the initial value as the state variable of the current n moment; obtaining a function relationship between the electron current and the rotor flux linkage; calculating a coefficient of a state variable and a stator three-phase voltage; obtaining excitation voltage; obtaining theta (n + 1) and omega (n + 1) according to the function relationship, the coefficient of the state variable, the stator three-phase voltage and the excitation voltage, and according to a rotor motion equation of a traditional VBR model and the state variable at the current n moment; enabling n to be equal to n + 1, and updating the state variable at the current n moment to be the state variable at the n + 1 moment; and skipping to the step of acquiring the function relationship between the electron current and the rotor flux linkage until n = n + T. According to the invention, the precision and efficiency of the VBR model electromagnetic transient simulation of the synchronous motor can be ensured at the same time.

Description

technical field [0001] The invention relates to the field of electromagnetic transient simulation of a synchronous motor, in particular to a VBR model electromagnetic transient simulation method and system of a synchronous motor. Background technique [0002] The synchronous generator is the main power supply equipment of the power system. Whether the power system is in a stable operation or a transient process, the operation of the generator includes the mutual conversion between thermal energy, mechanical energy, electric field energy and magnetic field energy. At the same time, the synchronous generator is also a rotating element, and the rotating operating state of the generators in the system jointly determines the operating state of the system. Therefore, for the system transient simulation process, it is necessary to establish a dynamic mathematical model of the synchronous generator. [0003] In order to realize the full electromagnetic transient simulation of the p...

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Problems solved by technology

[0021] The purpose of the present invention is to provide a VBR model electromagnetic transient simulation method and system of a synchronous motor, which can solve the problem that the accuracy and efficiency of the VBR model electromagnetic transient simulation of a synchronous motor are difficult to balance

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