Lintao Ye;Krishna Chaitanya Kosaraju;Vijay Gupta;Rodrigo D. Trevizan;Raymond H. Byrne;Babu R. Chalamala
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Decentralized Reactive Power Control in Distribution Grids With Unknown Reactance Matrix
We consider the problem of decentralized control of reactive power provided by distributed energy resources for voltage support in the distribution grid. We assume that the reactance matrix of the grid is unknown and potentially time-varying. We present a decentralized adaptive controller in which the reactive power at each inverter is set using a potentially heterogeneous droop curve and analyze the stability and the steady-state error of the resulting system. The effectiveness of the controller is validated in simulations using a modified version of the IEEE 13-bus and a 8500-node test system.
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