Dynamic model of static synchronous compensator in Single-Machine Infinite-Bus power system

Subject Areas : Journal of Simulation and Analysis of Novel Technologies in Mechanical Engineering

S.  Zanjani ¹ (University Blvd. Najafabad, Isfahan Iran. Post Code: 8514143131)

Received: 2023-01-13 Accepted : 2023-02-25 Published : 2023-03-01

Keywords: modelling, static synchronous compensator, Shunt device,

Abstract :

Electric loads such as electric arc furnaces, and heavy industrial plants can produce or absorb reactive power. Due to the instantaneous change of loads, the reactive power balance is essential in a power system. Static synchronous compensator (STATCOM) is usually used to control the reactive power. By controlling the reactive power absorbed or injected into the power system, it makes the voltage at the point of connection to the grid. This compensator is used in two stable operating modes, inductive (lag) and capacitive (leading), to improve the performance of the power system. In this paper, a single-machine power system with shunt compensator is considered and the aim is to determine the relationship between voltage and current between the compensator and the transmission line. An approximate model is considered for the compensator, where the compensator current plays the main role. Then, using the analysis of algebraic equations, the voltage in the compensating bus was determined. Finally, the simulation results show the behavior of the compensator for different modes.

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