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Adaptive PI controller to voltage regulation in power systems: STATCOM as a case study.

Mohammad Reza Tavana¹, Mohammad-Hassan Khooban¹, Taher Niknam¹

¹Department of Electrical Engineering, Shiraz University of Technology, Iran.

ISA Transactions

|November 30, 2016

Summary

A new robust adaptive fuzzy control strategy enhances power system stability and voltage regulation for STATCOM devices. This method optimizes controller parameters, outperforming conventional approaches in simulations.

Keywords:

General Type-2 Fuzzy Logic Control Online intelligent control Static synchronous compensator (STATCOM)Teaching Learning Based Optimization (TLBO)Voltage regulation

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Area of Science:

Electrical Engineering
Control Systems
Artificial Intelligence

Background:

Static synchronous compensators (STATCOM) are crucial for power system quality and reliability.
STATCOMs manage dynamic disturbances, transient stability, power oscillation damping, and voltage regulation.
Existing control strategies for STATCOMs face challenges with system uncertainties and dynamic changes.

Purpose of the Study:

To propose a robust adaptive Proportional-Integral (PI) based optimal fuzzy control strategy for STATCOMs in distribution systems.
To enhance STATCOM performance in voltage regulation and dynamic disturbance handling.
To ensure robustness and stability against power system uncertainties.

Main Methods:

A novel General Type-II Fuzzy Logic (GT2FL) controller is combined with the Teaching Learning Based Optimization (TLBO) Algorithm.
The TLBO algorithm is used to optimally tune the parameters of the PI controller and the membership functions of the GT2FL.
The proposed controller is named online-TLBO General Type-2 Fuzzy PI (OGT2FPI).

Main Results:

The OGT2FPI controller demonstrated superior performance compared to conventional PI and Optimal Fuzzy PI (OFPI) controllers.
Simulation results validated the effectiveness of the proposed intelligent control strategy.
The controller ensured robustness and stability under various power system conditions.

Conclusions:

The proposed OGT2FPI controller offers an effective and robust solution for STATCOM control in distribution systems.
This intelligent strategy significantly improves power system stability and voltage regulation.
The integration of GT2FL and TLBO provides a promising direction for advanced power system control applications.