Transient stability control using time domain simulations in optimal load distribution

Subject Areas : Electronics Engineering

Mehdi Motahari ¹ , Afshin Lashkarara ² , Seyed Ali Nabavi niaki ³

1 - Islamic Azad University, Dezful Branch, Dezful, Iran
2 - Islamic Azad University, Dezful Branch, Dezful, Iran
3 - University of Toronto, Toronto, Canada

Received: 2021-05-05 Accepted : 2021-05-05 Published : 2018-10-23

Keywords:

Abstract :

This paper presents a new method for achieving transient stability control to solve the optimal load distribution problem by considering the transient stability constraint (TSCOPF). The novelty of this research includes the use of the equivalent single machine (SIME) method to implement and improve the two important and main parts of the TSCOPF problem. Part 1: SIME is used to analyze the transient stability of the power system. Part 2: SIME equates a multi-machine system to a single machine connected to an infinite bus (OMIB). The instability angle obtained from the equivalent OMIB angular path is used to construct the transient stability constraint. In this method, the transient stability constraint is included by SIME in each iteration of the TSCOPF method to accurately determine the dynamic behavior of the power system. Differential equations representing the dynamic behavior of system machines are decomposed into algebraic equations according to the trapezoidal rule. The proposed load distribution model is tested and analyzed on the IEEE 9-bus system (WECC).