Open AccessVBR electromagnetic transient fast simulation model of synchronous machine based on time scale transformation
Author(s) -
ShuJun Yao,
Peng Zhan,
Shuo Zhang,
WanHua Guo
Publication year - 2019
Publication title -
the journal of engineering
Language(s) - English
Resource type - Journals
ISSN - 2051-3305
DOI - 10.1049/joe.2018.8870
Subject(s) - transient (computer programming) , rotation (mathematics) , computer science , reactance , transformation (genetics) , control theory (sociology) , electric power system , permanent magnet synchronous generator , power (physics) , coordinate system , voltage , physics , electrical engineering , engineering , biochemistry , chemistry , control (management) , quantum mechanics , artificial intelligence , gene , operating system
In a large‐scale power system, electromagnetic transient simulation is facing the contradiction between simulation speed and simulation accuracy, so the electromagnetic transient models of the components in the power system have been continually being improved. The synchronous generator is an important part of the power system, and the Voltage Behind Reactance (VBR) model of the synchronous machine is deduced and improved on the basis of the classical model. The method of Single‐phase rotation transformation is based on the idea of a rotating coordinate system, and the frequency of the signal can be reduced by the rotation transformation. Moreover, the simulation step length of the electromagnetic transient is related to the frequency of the change of the electric quantity. The lower the change frequency is, the larger the simulation step can be. Here, according to the theory of single‐phase rotation transformation, the VBR model of synchronous generator based on time scale transform is deduced, which can simulate in the case of large steps without the loss of the precision, and thereby which the speed of electromagnetic transient simulation of power system will be effectively improved.