Reactive power compensation in microgrids: A centralized stochastic approach
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Abstract
Microgrids have been developing nowadays as an initiative to operate modern electric distribution systems in a more economic and efficient manner which benefited both system operator and consumers. However, system operators confront certain ordeals in microgrid operation. In this paper, a centralized reactive power compensation (CRPC) system is proposed for microgrids which aims at minimizing the total cost of reactive power compensation including power loss cost, capacitor utilization cost, and voltage deviation in the presence of renewable energy resources. Moreover, the stochastic behavior of customers in the microgrid is considered through several scenarios for demanded active and reactive power, electricity price, and the generated power of renewable energy resources. Further, sensitivity of the proposed CRPC system on the weighting coefficient definition in the objective function is investigated. In addition, the performance of the introduced CRPC system is compared with a decentralized reactive power compensation method. The effectiveness of the proposed methodology is examined using a Macauian test system.
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