Abstract
As electric power industries are moving towards restructuring of the power system, several challenges and key issues are arising such as congestion, pricing, operation, and management. Violation of line loading and/or bus voltage limits of the power system due to various transactions at any time is known as congestion. Congestion in the system may cause uneconomical operation and/or blackouts, an outage of the interconnected system and disturbance in the systems. In the emerging competitive electricity markets, congestion management plays an important role in the operation of economical, secure and stable operation of the power system. In this paper, several important works of literature proposed for congestion management are critically analyzed. Various optimization algorithms developed to alleviate congestion are also discussed in detail. The key issues and challenges are highlighted.
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