Maintaining the Frequency Voltage and the Optimal Frequency Voltage with a Two-Layer Control Scheme

PROJECT TITLE :

Two-Layer Control Scheme for maintaining the Frequency Voltage and the Optimal

ABSTRACT:

In this research, a two-layer Control System is developed to optimise hybrid ac/dc microgrids' optimal economic operation. The proposed scheme consists of two layers: a lower layer that represents a continuous dynamic control model with a solution that is analogous to the iterative solution of a decentralised economic dispatch problem for ac and dc sections, and a higher layer that represents a decentralised economic dispatch problem. Power exchanges between the two parts are regulated by the upper layer, which contains primary, secondary, and tertiary coordinations in interlinking converters (ICs). Local controllers in the ac and dc sections work together to maintain economic dispatch while regulating the microgrid frequency and voltages. The tertiary IC coordination's microgrid master control will optimise power exchanges between the two portions. The difference in incremental costs of ac and dc sections is used in tertiary IC coordination to reduce the optimal solution's computation and Communication needs. Applying time-domain simulations in PSCAD/EMTDC to the optimal operation of a hybrid ac/dc microgrid verifies the efficiency of the suggested control method.

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