Research on Algebraic Loop of Synchronous Generator Simulation Based on Simulink

doi:10.16182/j.issn1004731x.joss.20-0805

Abstract

Abstract:

The problem of algebraic loop is common in Simulink simulation. The existence of algebraic loop will reduce the speed and accuracy of simulation, and even lead to errors in simulation results. Taking the simulation of synchronous generator as an example, the problem of algebraic loop and its elimination method in Simulink simulation are discussed. Starting from the analysis of the basic equations of synchronous generator, the cause of algebraic loop in simulation is discussed, the influence of the algebraic loop on the system simulation is pointed out, using disassembly method and transformation method, focusing on eliminating the algebraic loop, the system simulation results after eliminating the algebraic loop by using several methods are compared and analyzed, from the aspects of simulation time and simulation accuracy. The results show that the simulation speed of the system is obviously improved after the algebraic loop is eliminated, and the transformation method has a significant advantage over the disassembly method in the dynamic simulation accuracy of the system.

Key words: algebraic loop, disassembly method, transformation method, synchronous generator system simulation

CLC Number:

TM743

Shuang Wang, Zhaohui Gao, Siyu Chen, Xiao Tang, Zhan Xi. Research on Algebraic Loop of Synchronous Generator Simulation Based on Simulink[J]. Journal of System Simulation, 2022, 34(3): 482-489.

Figures/Tables 8

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消除方法	模型	平均耗时/s
未使用	初始模型	18.096 0
拆解法	使用Unit Delay模块	2.321 3
	使用Memory模块	2.574 2
	使用一阶惯性环节	2.513 2
变换法	方程变换法	2.396 4