A decentralized dispatch approach on AC/DC hybrid power systems with wind power

This paper focuses on the day-ahead active power dispatch for interconnected power systems with wind power integration via HVDC tie-line. Considering the complex operating characteristics of HVDC tie-line, a decentralized dispatch model based on analytical target cascading (ATC) technique is proposed. The day-ahead power dispatch is divided into the master problem of the upper-level coordination dispatch and the subproblem of the lower-level regional dispatch. The upper-level dispatch center is responsible for coordinating the HVDC tie-line power flow between the interconnected areas, and the lower-level dispatch centers solve the security-constrained unit commitment (SCUC) problem of each area independently. Through the decomposition and coordination mechanisms, the economy of the entire interconnected system is achieved. A 12-bus two area system interconnected via HVDC tie-line is utilized to verify the effectiveness of the proposed model.