Improvement of power system stability using static voltage stabilizer
01 Jan 1979-Electrical Engineering in Japan (Wiley Subscription Services, Inc., A Wiley Company)-Vol. 99, Iss: 3, pp 55-65
TL;DR: In this article, the effects of the static voltage stabilizer on the stability of a bulk power transmission line were investigated, and the optimum value of controlled voltage to suppress the power swing was also derived.
Abstract: The effects of the static voltage stabilizer on the stability of a bulk power transmission line were investigated. Two types of stabilizer are considered. One is a saturable-reactor type and the other is a thyristor-controlled reactor type. Control method and transient behavior are discussed in the case of a thyristor-controlled reactor type. By this analysis it can be determined whether the power system can be represented by fundamental components only, neglecting the harmonic components. The optimum value of controlled voltage to suppress the power swing is also derived. The effects of the static voltage stabilizer in comparison with those of series capacitor compensation are also examined. It was concluded that the voltage control via voltage stabilizer is effective to improve stability, especially in heavy load conditions.
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TL;DR: In this article, a detailed model of a single-machine infinite-bus system with Static Var Compensator for low-frequency oscillation studies is developed, using this model a new method of designing additional controller known as SVC stabilizer to suppress the lowfrequency oscillations of the system is presented.
Abstract: In this paper a detailed model of a single-machine infinite-bus system with Static Var Compensator for low-frequency oscillation studies is developed. Using this model a new method of designing additional controller known as SVC stabilizer to suppress the low-frequency oscillations of the system is presented. The design procedure, besides exactly assigning the two poles corresponding to the mechanical modes of the system to the specified location uses the extra design freedom available in the stabilizer parameters to shift all the other unassigned poles of the system to a stable region. This guarantees stability of the closed-loop system during the design stage itself.
2 citations
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TL;DR: In this paper, a proposal for compensation of long ac transmission lines entirely by shunt devices designated as reactance controllers is presented, and the fundamental design of the reactance controller as a transmission line shunt compensating device is established.
Abstract: A proposal is presented for compensation of long ac transmission lines entirely by shunt devices designated as reactance controllers. Fundamental design of the reactance controller as a transmission line shunt compensating device is established. Application of reactance controllers to transmission lines is described as well as a theoretical approach for the Transmission Planner to evaluate controlled shunt reactance compensation for future and existing transmission schemes.
9 citations