Consensus Based Distributed Optimal Reactive Power Control in Power Distribution Systems

High penetration level of the renewable energy resources in the power distribution network is one of the main issues of the distribution system operator due to voltage deregulation, power losses and other control problems associated with intermittency of renewable energy resources. To resolve these problems following the increasing penetration level of distributed generators (DGs), appropriate reactive power control of DGs, that can lead to the voltage profile improvement and power loss minimization, should be addressed. This chapter proposes a consensus-based distributed algorithm for the optimal reactive power control (OPRC) of DGs in the power system. Proposed algorithm is found to be effective to optimize the multi-objective function including power loss, and voltage deviation of the distribution systems. The effectiveness and scalability of the proposed algorithm have been validated by testing it on 6-bus and 162-bus distribution systems and then comparing its results with the centralized control scheme.

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