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Active: 80,791

Evaluation of Proper Placement of Thyristor Control Series Compensator in Transmission Line

Evaluation of Proper Placement of Thyristor Control Series Compensator in Transmission Line

ABSTRACT

Nigeria transmission lines are characterized with high line loss as a result of large distance of travel, breaking down of some generating plant since the Nigeria grid is interconnected system, which the sole aim of the design is to enable back feeding in case of uncertainties.  The international standard for losses, that supposed to occur in transmission line range from 5% to 10%, because no matter how the line was design, losses must occur. Nigeria transmission line was characterized and it was observed that losses experienced in some lines exceeded the range of 5 % to 10%. Losses in some lines are 15%, 20% and 30% etc, it shows the terrible state of Nigeria transmission line and the losses runs in billions of naira. This results to huge economic loss to power investors. However, power consumers pay for what they did not consume. Secondly, the standard operating condition in transmission line ranges from 0.95 to 1.05 in per unit system. It was observed after characterization that Nigeria transmission line is marred with voltage violations. Therefore, there is need to mitigate the losses. Flexible Alternating Current Transmission System (FACTS) is a modem technology to control dynamic power flow and reduce line losses etc.  THyristor Control Series Compensator (TCSC) which belongs to FACTS family was adopted to mitigate the technical loss in Transmission line. But the problem is the proper placement of TCSC in the transmission network in order to achieve maximum results. There are some many methods of placing TCSC in the transmission network which include Genetic Algorithm (GA), Particle Swarm Optimization (PSO), sensitivity method and multiple sensitivity method.  These methods were examined but Multiple Sensitivity method performed better when compare with other methods.

Keywords:  Proper Placement, Thyristor Control Series Compensator (TCSC), Transmission Line

Authorship
Ugwu George, Ph.D.; and Ibekwe, Basil Esom, Ph.D.

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