A Bi-Level Scheduling Model of the Distribution System With a Distribution Company and Virtual Power Plants Considering Grid Flexibility

With the emergence of virtual power plants (VPPs) in distribution systems, distribution companies (DISCOs) can manage distributed generators scattered across their systems. Interactions between each DISCO and VPP are expected to be crucial for securing system reliability without increasing operation...

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Main Authors: Hyeongon Park, Woong Ko
Format: Article
Language:English
Published: IEEE 2022-01-01
Series:IEEE Access
Subjects:
Online Access:https://ieeexplore.ieee.org/document/9749098/
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author Hyeongon Park
Woong Ko
author_facet Hyeongon Park
Woong Ko
author_sort Hyeongon Park
collection DOAJ
description With the emergence of virtual power plants (VPPs) in distribution systems, distribution companies (DISCOs) can manage distributed generators scattered across their systems. Interactions between each DISCO and VPP are expected to be crucial for securing system reliability without increasing operational complexity. This article proposes a bi-level scheduling model for these interactions, considering the ramping flexibility of the distribution system. In the upper level, the DISCO minimizes the distribution system’s operational cost and the cost of procuring flexibility by varying the price of the power traded with the VPP. In the lower level, the VPP maximizes its profit by managing the amount of power it trades with the DISCO. We transform the bi-level model into a single-level problem by using Karush–Kuhn–Tucker optimality conditions and linearization techniques. We present case studies of interactions between the DISCO and VPPs, with the assumption that the DISCO can purchase active power from a wholesale market. The results demonstrate that a win–win situation for both the DISCO and VPP can be achieved by managing the power exchanged while procuring flexibility.
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spelling doaj.art-6f9a4177e17f4d33bc853b7924f593f42022-12-21T19:06:02ZengIEEEIEEE Access2169-35362022-01-0110367113672410.1109/ACCESS.2022.31646899749098A Bi-Level Scheduling Model of the Distribution System With a Distribution Company and Virtual Power Plants Considering Grid FlexibilityHyeongon Park0Woong Ko1https://orcid.org/0000-0001-7686-1809Department of Safety Engineering, Pukyong National University, Busan, South KoreaSchool of Electrical, Electronic and Control Engineering, Changwon National University, Uichang, Changwon, South KoreaWith the emergence of virtual power plants (VPPs) in distribution systems, distribution companies (DISCOs) can manage distributed generators scattered across their systems. Interactions between each DISCO and VPP are expected to be crucial for securing system reliability without increasing operational complexity. This article proposes a bi-level scheduling model for these interactions, considering the ramping flexibility of the distribution system. In the upper level, the DISCO minimizes the distribution system’s operational cost and the cost of procuring flexibility by varying the price of the power traded with the VPP. In the lower level, the VPP maximizes its profit by managing the amount of power it trades with the DISCO. We transform the bi-level model into a single-level problem by using Karush–Kuhn–Tucker optimality conditions and linearization techniques. We present case studies of interactions between the DISCO and VPPs, with the assumption that the DISCO can purchase active power from a wholesale market. The results demonstrate that a win–win situation for both the DISCO and VPP can be achieved by managing the power exchanged while procuring flexibility.https://ieeexplore.ieee.org/document/9749098/Virtual power plant (VPP)bi-level programmingflexibilitydistribution systemelectricity market
spellingShingle Hyeongon Park
Woong Ko
A Bi-Level Scheduling Model of the Distribution System With a Distribution Company and Virtual Power Plants Considering Grid Flexibility
IEEE Access
Virtual power plant (VPP)
bi-level programming
flexibility
distribution system
electricity market
title A Bi-Level Scheduling Model of the Distribution System With a Distribution Company and Virtual Power Plants Considering Grid Flexibility
title_full A Bi-Level Scheduling Model of the Distribution System With a Distribution Company and Virtual Power Plants Considering Grid Flexibility
title_fullStr A Bi-Level Scheduling Model of the Distribution System With a Distribution Company and Virtual Power Plants Considering Grid Flexibility
title_full_unstemmed A Bi-Level Scheduling Model of the Distribution System With a Distribution Company and Virtual Power Plants Considering Grid Flexibility
title_short A Bi-Level Scheduling Model of the Distribution System With a Distribution Company and Virtual Power Plants Considering Grid Flexibility
title_sort bi level scheduling model of the distribution system with a distribution company and virtual power plants considering grid flexibility
topic Virtual power plant (VPP)
bi-level programming
flexibility
distribution system
electricity market
url https://ieeexplore.ieee.org/document/9749098/
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