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This contribution to the Panel on "Intelligent Techniques Applied to Transmission Systems" the FACTS technology, its principle power electronics controllers, state of the art and planning issues.
An improved nonlinear control strategy is proposed in this paper. The main improvement made by the authors to the traditional nonlinear control which is based on the differential geometric theory is that an appropriate output function is selected to introduce a nonlinear transformation. Although, such transformation can only partially linearize the nonlinear system, it does provide a way to realize...
In emerging electric power systems, increased transactions often lead to situations where system no longer remains in the secure operating region. The flexible AC transmission system (FACTS) controllers can play an important role in the power system security enhancement. However, due to high capital investment, it is necessary to locate these controllers optimally in the power system. In this paper,...
In the last decade, various nonlinear control techniques have been applied in FACTS controller design. The performance of nonlinear controllers is influenced by the parameter uncertainty and external disturbance. This paper mainly discusses a novel approach of robust variable structure control (VSC) based series FACTS controller design for damping local mode power system oscillations. The VSC-based...
This paper develops an optimal procedure for optimal control co-ordination of controllers of power system stabilizers (PSSs) and FACTS devices for improving small- disturbance stability, particularly the stability of inter-area modes, in multi-machine power systems. The control coordination problem is formulated as a constrained optimization by which the objective function formed from selected eigenvalues...
This paper discusses the use of trajectory sensitivity analysis (TSA) in assessing the effects of a thyristor controlled series compensator (TCSC) on the stability condition of a power system. TSA has been used to find suitable controller parameters for the effective use of the TCSC in improving stability margin. The TCSC is modeled by a variable capacitor, the value of which changes with the firing...
This paper deals with congestion problem in the bilateral dominated electricity markets using redispatch method through a regulation market. In the bilateral market, the interest is to maintain the desired transactions between contracting parties. To solve the arising congestion in this market model, the rescheduled transactions are forced to be as close to the scheduled transactions as possible....
This present bibliography paper includes the journal and conference papers published on FACTS during the year 2005 which were not available at the time of preparation of the bibliography on flexible AC transmission systems for the year 2004-2005, published in three papers in the Proceedings of 2006 IEEE PES General Meeting. The year 2006 papers as available until October 2006 are included.
In this paper, multi-objective particle swarm optimization (MOPSO) algorithm is used to find the optimal location of thyristor controlled series compensator (TCSC) and its parameter in order to increase total transfer capability (TTC), reduce total transmission losses and reduce voltage deviation. This multi-objective optimization problem is solved by using the MOPSO with sigma method and encouraging...
In this paper, power system multi input-multi output identification methods that are useful for simultaneous coordinated design of power system stabilizer and thyristor controlled series capacitors controller are presented. The output error and the auto regressive exogenous input structures are used separately to identify the multi input-multi output transfer function of a power system. Different...
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