A Distributed Robust Dispatch Approach for Interconnected Systems with a High Proportion of Wind Power Penetration

Jianwen Ren, Yingqiang Xu and Shiyuan Wang
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Jianwen Ren: Department of Electrical Engineering, North China Electric Power University, Baoding 071003, China
Yingqiang Xu: Department of Electrical Engineering, North China Electric Power University, Baoding 071003, China
Shiyuan Wang: Department of Electrical Engineering, North China Electric Power University, Baoding 071003, China

Energies, 2018, vol. 11, issue 4, 1-18

Abstract: This paper proposes a distributed robust dispatch approach to solve the economic dispatch problem of the interconnected systems with a high proportion of wind power penetration. First of all, the basic principle of synchronous alternating direction method of multipliers (SADMM) is introduced to solve the economic dispatch problem of the two interconnected regions. Next, the polyhedron set of the robust optimization method is utilized to describe the wind power output. To adjust the conservativeness of the polyhedron set, an adjustment factor of robust conservativeness is introduced. Subsequently, considering the operation characteristics of the DC tie line between the interconnected regions, an economic dispatch model with a high proportion of wind power penetration is established and parallel iteration based on SADMM is used to solve the model. In each iteration, the optimized power of DC tie lines is exchanged between the regions without requiring the participation of the superior dispatch center. Finally, the validity of the proposed model is verified by the examples of the 2-area 6-node interconnected system and the interconnection of several modified New England 39-node systems. The results show that the proposed model can meet the needs of the independent dispatch of regional power grids, effectively deal with the uncertainty of wind power output, and maximize the wind power consumption under the condition of ensuring the safe operation of the interconnected systems.

Keywords: wind power consumption; economic dispatch; interconnected power system; decentralized optimization; synchronous alternating direction method of multipliers (SADMM); robust optimization (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2018
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (2)

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