DOI:10.35833/MPCE.2020.000918 |
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ADMM-based Distributed Active and Reactive Power Control for Regional AC Power Grid with Wind Farms |
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Page view: 153
Net amount: 413 |
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Author:
Pengda Wang1,Qiuwei Wu1,Sheng Huang1,Canbing Li2,Bin Zhou3
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Author Affiliation:
1.the Center for Electric Power and Energy (CEE), Department of Electrical Engineering, Technical University of Denmark (DTU), Kgs. Lyngby 2800, Denmark;2.the School of Electronic Information and Electrical Engineering, Shanghai Jiao Tong University, Shanghai 200240, China;3.the College of Electrical and Information Engineering, Hunan University, Changsha 410082, China
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Foundation: |
The work was supported in part by Technical University of Denmark (DTU) and in part by China Scholarship Council (No. 201806130202). |
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Abstract: |
A distributed active and reactive power control (DARPC) strategy based on the alternating direction method of multipliers (ADMM) is proposed for regional AC transmission system (TS) with wind farms (WFs). The proposed DARPC strategy optimizes the power distribution among the WFs to minimize the power losses of the AC TS while tracking the active power reference from the transmission system operator (TSO), and minimizes the voltage deviation of the buses inside the WF from the rated voltage as well as the power losses of the WF collection system. The optimal power flow (OPF) of the TS is relaxed by using the semidefinite programming (SDP) relaxation while the branch flow model is used to model the WF collection system. In the DARPC strategy, the large-scale strongly-coupled optimization problem is decomposed by using the ADMM, which is solved in the regional TS controller and WF controllers in parallel without loss of the global optimality. The boundary information is exchanged between the regional TS controller and WF controllers. Compared with the conventional OPF method of the TS with WFs, the optimality and accuracy of the system operation can be improved. Moreover, the proposed strategy efficiently reduces the computation burden of the TS controller and eliminates the need of a central controller. The protection of the information privacy can be enhanced. A modified IEEE 9-bus system with two WFs consisting of 64 wind turbines (WTs) is used to validate the proposed DARPC strategy. |
Keywords: |
Alternating direction method of multipliers (ADMM) ; distributed active and reactive power control (DARPC) ; optimal power flow (OPF) ; semidefinite programming (SDP) ; wind farm |
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Received:December 29, 2020
Online Time:2022/05/12 |
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