Abstract
As the load demand in a power system increases, power system operators struggle to maintain the power system to be operated within its acceptable limits. If no mitigation actions are taken, a power system may suffer from voltage collapse, which in turn leads to blackout. Flexible AC Transmission System (FACTS) devices can be employed to help improve the voltage profile of the power system. This paper presents the implementation of Chaotic Immune Symbiotic Organism Search (CISOS) optimization technique to solve optimal Thyristor Controlled Series Compensator (TCSC) in a power system for voltage profile improvement. Validation process are conducted on IEEE 26-bus RTS resulting in the capability of CISOS in solving the allocation problem with a better voltage profile. Comparative studies conducted with respect to Particle Swarm Optimization (PSO) and Evolutionary Programming (EP) has revealed the superiority of CISOS over PSO and EP in solving the optimal allocation problem by producing optimal solution with a better voltage profile. The results and information obtained from this study can help power system operator in terms of optimal compensation in power system as well as improving the operation of a power system.
Highlights
In power system operation, it is crucial for the voltage profile of the power system to be maintained within the acceptable level
This paper presents the implementation of Chaotic Immune Symbiotic Organisms Search (CISOS) optimization technique to solve optimal Thyristor Controlled Series Compensator (TCSC) allocation problem with the aim to improve the voltage profile of the power system
In order to test the effectiveness of the optimization technique in solving the optimal TCSC allocation problem, the optimization process is tested on IEEE 26
Summary
It is crucial for the voltage profile of the power system to be maintained within the acceptable level. As the load demand in a power system increases, power system operators struggle to keep the voltage profile within its appropriate level. If such event is not mitigated, it may later cause reduction in voltage value, which later leads to voltage collapse. In order to mitigate such event from occurring, several mitigation steps can be implemented by power system operators. On of the mitigation step which can be implemented is to install compensating devices on a power system. Many previous studies have implemented FACTS devices for power system compensation and manages to provide improvement to the power system operation. FACTS devices have been implemented to solve various power system operation problems related to voltage stability improvement, voltage profile improvement, power loss minimization as well as maximization of power transfer capability
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