A Decentralized Optimal Operation of AC/DC Hybrid Distribution Grids

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Abstract
In an AC/DC hybrid distribution grid (AC/DC HDG), different AC distribution grids are connected through a voltage source converter (VSC) based DC grid to operate the entire system in a secure and economic manner. This paper presents a decentralized optimal operation approach for running AC/DC HDG which can either work individually or collaborate with each other. Using the analytical target cascading (ATC) approach, a three-level hierarchy consisting of DC grids, VSC stations and AC grids, is formulated to decompose the operation problem of AC/DC HDG. The obtained subproblems for these grid levels, as well as the interactions between them, are modeled and solved with a nested solution process. The simulation results show the effectiveness of the proposed decentralized approach.
Funding Information
  • China National High Technology Research Development Program (863 Program) (2015AA050102)

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