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A NEW APPROACH OF REACTIVE LOSS ALLOCATION IN DEREGULATED POWER SYSTEM

Sk Mafizul Islam, Mehebub Alam, Sk Mohammad Yasin

Restructured or deregulated power system has thrown a challenge to the participants in economical as well as technical basis due to non-linear nature and complexity associated with the power flow within transmission network . Although real power is considered as the main traded commodity in electricity market , reactive power plays a crucial role in power system stability and security. Losses for each participants would be different according to their network utilization .So a fair and accurate loss allocation method is essential to have correct charges for each participants. Appropriate reactive power management is essential for system security and effective real power transfer and thus it is to be investigated. This paper presents a new methodology of reactive loss allocation among generators and loads for each transmission line. This proposed method is based on orthogonal current projection concept and (generators) loads buses (produce)consume more reactive power are penalized to improve system stability .As for illustration a sample 4-bus cyclic transmission systems have been studied to test the effectiveness and viability of the proposed method compared to others .