Article

Enhanced Security-Constrained OPF With FACTS Devices

IEEE Transactions on Power Systems (impact factor: 2.68). 09/2005; DOI:10.1109/TPWRS.2005.852125 pp.1597 - 1605
Source: IEEE Xplore

ABSTRACT The features of the new electricity market with the presence of many different operators lead to a new interest in the congestion management. The changes to the market-clearing point schedules required by the presence of bottlenecks in the electric grid can be strongly reduced if flexible ac transmission system (FACTS) devices are suitably installed in the transmission system with the aim of redistributing real and reactive power flows. Their optimal setting and operation mode can be determined by the use of customized security-constrained optimal power flow (SCOPF) programs. This paper deals with the use of FACTS devices as control variables in a compact and reduced SCOPF formulation, focusing on the definition of their control regions and on a new procedure implemented to find a global solution without sticking on local minima. The application of the new SCOPF procedure to a real system is also presented.

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    Conference Proceeding: Minimizing Balancing Market Congestion Re-dispatch Costs by Optimal Placements of FACTS Devices
    M. Zeraatzade, I. Kockar, Yong-Hua song
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    ABSTRACT: The paper proposes a method to help evaluate how optimal placement of FACTS devices, and in particular thyristor controlled phase shifter transformers, can reduce costs associated with congestion re-dispatch in a balancing market. Balancing market exists in markets in which most of the trading is done via decentralized bilateral contracts. In these markets only final adjustments necessary to ensure secure system operation is carried out at a centralized balancing market. Each market player can participate in the balancing market by submitting offers and bids to increase and decrease its initially submitted active generation output. The proposed technique is based on mixed integer linear programming, so that a power system network is represented by a simplified DC power flow. Market participants' offers and bids are also represented by linear models. Results show that applications of FACTS devices can significantly reduce costs of congestion re-dispatch.
    Power Tech, 2007 IEEE Lausanne; 08/2007
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Keywords

compact
 
congestion management
 
different operators lead
 
electric grid
 
FACTS
 
FACTS devices
 
features
 
flexible ac transmission system
 
global solution
 
market-clearing point schedules
 
new electricity market
 
new procedure
 
new SCOPF procedure
 
paper deals
 
reactive power flows
 
redistributing real
 
SCOPF
 
SCOPF formulation
 
transmission system