STATCOM controllers based on fuzzy PI approach

Abstract

<span>The electricity companies enforced some legislation on the electricity consumption contracts because the electricity network cannot bear the increasing demands of consumers. Therefore, a new controlling system is required to improve the frequent variations of the power system operating point (OP). Consequently, the flexible AC transmission systems (FACTS) controllers should be able to integrate with recent OP. Coordination of FACTS controller is more sophisticated due to various OP and uncertainties parametric in cooperation with the non linearity of power system (PS). Static Synchronous Compensator (STATCOM) plays very important role like the stability support of large and small transient-disturbance in PS. Therefore, the aim of this research is presents fuzzy logic (FL) with the PI controller (a novel controller) its ability to improve the performance of the power system along with the capability of switch irregular and rough actual world data. This new controlling system may be suitable for a wide range of applications especially the models which deal with huge and complicated data analysis. This new controller system carries out the adjustments of the voltage on DC capacitor under transient and steady-state conditions.</span>

Mitigating power quality disturbances in smart grid using FACTS

“…Figure 1 shows an illustrative diagram of the STATCOM. STATCOM is a controlled reactive power source, where a set of a voltage source converter (VSC) and dc capacitors is shunt connected to medium voltage transmission lines, close to central loads [22]. The function is to provide a swift reactive power compensation that inherently supports the terminal voltage and mitigates PQ disturbances such as voltage fluctuation, sag, swell, and harmonics.…”

“…pulse-width modulation (PWM) technique is used as a switches driver to develop a switched sinusoidal voltage waveform from a dc voltage. Integrated gate bipolar transistors (IGBTs) are typically used as switching elements since they have small and lower switching losses [22]. Figure 1 shows an illustrative diagram of the STATCOM.…”