Consensus-based Distributed Approach to Lossy Economic Power Dispatch of Distributed Energy Resources

Hao Xing, Pingliang Zeng*, Yuting Mou, Qiuwei Wu

*Corresponding author for this work

Research output: Contribution to journalJournal articleResearchpeer-review

Abstract

Economic dispatch problem (EDP) of distributed energy resources (DERs) is the key to achieve balanced coordination and economic operation of renewable energy and conventional generation, which is of vital significance to smart grids. This paper mainly investigates the EDP of DERs with transmission losses. We formulate the lossy EDP as an optimization problem, of which the objective is to minimize the aggregated production cost under physical constraints. It is a great challenge to solve the lossy EDP in a distributed fashion, as the nonconvexity of the transmission loss formula has posed extra difficulties. This paper proposes a consensus‐based distributed lambda iteration algorithm to solve the lossy EDP, and a damping mechanism is designed to overcome the oscillatory problem that conventional lambda iterations often suffer. The proposed algorithm is further improved, in order to tackle the prohibited operating zones of generators. Exhaustive simulations are presented to illustrate the proposed algorithm.
Original languageEnglish
Article numbere12041
JournalInternational Transactions on Electrical Energy Systems
Volume29
Issue number7
Number of pages17
ISSN1430-144X
DOIs
Publication statusPublished - 2019

Bibliographical note

Special Issue: Shaping Future Power Systems with High Penetration Renewable Generation

Keywords

  • Distributed algorithm
  • Economic dispatch
  • Smart grid
  • Transmission losses
  • Prohibited operating zones

Cite this

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title = "Consensus-based Distributed Approach to Lossy Economic Power Dispatch of Distributed Energy Resources",
abstract = "Economic dispatch problem (EDP) of distributed energy resources (DERs) is the key to achieve balanced coordination and economic operation of renewable energy and conventional generation, which is of vital significance to smart grids. This paper mainly investigates the EDP of DERs with transmission losses. We formulate the lossy EDP as an optimization problem, of which the objective is to minimize the aggregated production cost under physical constraints. It is a great challenge to solve the lossy EDP in a distributed fashion, as the nonconvexity of the transmission loss formula has posed extra difficulties. This paper proposes a consensus‐based distributed lambda iteration algorithm to solve the lossy EDP, and a damping mechanism is designed to overcome the oscillatory problem that conventional lambda iterations often suffer. The proposed algorithm is further improved, in order to tackle the prohibited operating zones of generators. Exhaustive simulations are presented to illustrate the proposed algorithm.",
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author = "Hao Xing and Pingliang Zeng and Yuting Mou and Qiuwei Wu",
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journal = "International Transactions on Electrical Energy Systems",
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Consensus-based Distributed Approach to Lossy Economic Power Dispatch of Distributed Energy Resources. / Xing, Hao ; Zeng, Pingliang; Mou, Yuting; Wu, Qiuwei.

In: International Transactions on Electrical Energy Systems, Vol. 29, No. 7, e12041, 2019.

Research output: Contribution to journalJournal articleResearchpeer-review

TY - JOUR

T1 - Consensus-based Distributed Approach to Lossy Economic Power Dispatch of Distributed Energy Resources

AU - Xing, Hao

AU - Zeng, Pingliang

AU - Mou, Yuting

AU - Wu, Qiuwei

N1 - Special Issue: Shaping Future Power Systems with High Penetration Renewable Generation

PY - 2019

Y1 - 2019

N2 - Economic dispatch problem (EDP) of distributed energy resources (DERs) is the key to achieve balanced coordination and economic operation of renewable energy and conventional generation, which is of vital significance to smart grids. This paper mainly investigates the EDP of DERs with transmission losses. We formulate the lossy EDP as an optimization problem, of which the objective is to minimize the aggregated production cost under physical constraints. It is a great challenge to solve the lossy EDP in a distributed fashion, as the nonconvexity of the transmission loss formula has posed extra difficulties. This paper proposes a consensus‐based distributed lambda iteration algorithm to solve the lossy EDP, and a damping mechanism is designed to overcome the oscillatory problem that conventional lambda iterations often suffer. The proposed algorithm is further improved, in order to tackle the prohibited operating zones of generators. Exhaustive simulations are presented to illustrate the proposed algorithm.

AB - Economic dispatch problem (EDP) of distributed energy resources (DERs) is the key to achieve balanced coordination and economic operation of renewable energy and conventional generation, which is of vital significance to smart grids. This paper mainly investigates the EDP of DERs with transmission losses. We formulate the lossy EDP as an optimization problem, of which the objective is to minimize the aggregated production cost under physical constraints. It is a great challenge to solve the lossy EDP in a distributed fashion, as the nonconvexity of the transmission loss formula has posed extra difficulties. This paper proposes a consensus‐based distributed lambda iteration algorithm to solve the lossy EDP, and a damping mechanism is designed to overcome the oscillatory problem that conventional lambda iterations often suffer. The proposed algorithm is further improved, in order to tackle the prohibited operating zones of generators. Exhaustive simulations are presented to illustrate the proposed algorithm.

KW - Distributed algorithm

KW - Economic dispatch

KW - Smart grid

KW - Transmission losses

KW - Prohibited operating zones

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DO - 10.1002/2050-7038.12041

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SN - 1430-144X

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