Optimal scheduling of pumped storage hydropower plants with multi-type of units in day-ahead electricity market considering water head effects

Pumped-storage hydropower plant (PSHP) is a type of valuable energy storage system and a flexible resource to the modern power system with increasing renewable energy integration. As independent market participants, a PSHP can participate in both the energy market and frequency regulation market to...

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Main Authors: Minjian Cao, Zechun Hu, Jilin Cai
Format: Article
Language:English
Published: Frontiers Media S.A. 2023-11-01
Series:Frontiers in Energy Research
Subjects:
Online Access:https://www.frontiersin.org/articles/10.3389/fenrg.2023.1326068/full
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author Minjian Cao
Zechun Hu
Jilin Cai
author_facet Minjian Cao
Zechun Hu
Jilin Cai
author_sort Minjian Cao
collection DOAJ
description Pumped-storage hydropower plant (PSHP) is a type of valuable energy storage system and a flexible resource to the modern power system with increasing renewable energy integration. As independent market participants, a PSHP can participate in both the energy market and frequency regulation market to maximize its revenue and contribution to the secure and economic operation of the power system. In some PSHPs, both fixed-speed and variable-speed units are installed to improve the flexibility, especially when operating in the pumping mode. However, it’s difficult to deal with the nonlinear relationships among power, flow, and water head in pumping and generating modes. This paper proposes iterative solution methods for scheduling the PSHP by considering the relationship between power and flow at different water heads for different types of units. The scheduling problem is established as a scenario-based optimization formulation by considering PSHP’s participation in both the energy market and frequency regulation market. In each iteration, the optimal dispatch model is formulated as a Mixed Integer Linear Programming (MILP) problem. Case studies are performed and simulation results validate the effectiveness of the model and the iterative solution methods.
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spelling doaj.art-f30d73b6bc514a83a49cfe2a335182992023-11-23T15:17:04ZengFrontiers Media S.A.Frontiers in Energy Research2296-598X2023-11-011110.3389/fenrg.2023.13260681326068Optimal scheduling of pumped storage hydropower plants with multi-type of units in day-ahead electricity market considering water head effectsMinjian Cao0Zechun Hu1Jilin Cai2Department of Electrical Engineering, Tsinghua University, Beijing, ChinaDepartment of Electrical Engineering, Tsinghua University, Beijing, ChinaCollege of Electrical Engineering and Control Science, Nanjing Tech University, Nanjing, ChinaPumped-storage hydropower plant (PSHP) is a type of valuable energy storage system and a flexible resource to the modern power system with increasing renewable energy integration. As independent market participants, a PSHP can participate in both the energy market and frequency regulation market to maximize its revenue and contribution to the secure and economic operation of the power system. In some PSHPs, both fixed-speed and variable-speed units are installed to improve the flexibility, especially when operating in the pumping mode. However, it’s difficult to deal with the nonlinear relationships among power, flow, and water head in pumping and generating modes. This paper proposes iterative solution methods for scheduling the PSHP by considering the relationship between power and flow at different water heads for different types of units. The scheduling problem is established as a scenario-based optimization formulation by considering PSHP’s participation in both the energy market and frequency regulation market. In each iteration, the optimal dispatch model is formulated as a Mixed Integer Linear Programming (MILP) problem. Case studies are performed and simulation results validate the effectiveness of the model and the iterative solution methods.https://www.frontiersin.org/articles/10.3389/fenrg.2023.1326068/fullpumped-storage hydropower plantwater head effectsscenario-based optimizationfixed-speed unitsvariable-speed units
spellingShingle Minjian Cao
Zechun Hu
Jilin Cai
Optimal scheduling of pumped storage hydropower plants with multi-type of units in day-ahead electricity market considering water head effects
Frontiers in Energy Research
pumped-storage hydropower plant
water head effects
scenario-based optimization
fixed-speed units
variable-speed units
title Optimal scheduling of pumped storage hydropower plants with multi-type of units in day-ahead electricity market considering water head effects
title_full Optimal scheduling of pumped storage hydropower plants with multi-type of units in day-ahead electricity market considering water head effects
title_fullStr Optimal scheduling of pumped storage hydropower plants with multi-type of units in day-ahead electricity market considering water head effects
title_full_unstemmed Optimal scheduling of pumped storage hydropower plants with multi-type of units in day-ahead electricity market considering water head effects
title_short Optimal scheduling of pumped storage hydropower plants with multi-type of units in day-ahead electricity market considering water head effects
title_sort optimal scheduling of pumped storage hydropower plants with multi type of units in day ahead electricity market considering water head effects
topic pumped-storage hydropower plant
water head effects
scenario-based optimization
fixed-speed units
variable-speed units
url https://www.frontiersin.org/articles/10.3389/fenrg.2023.1326068/full
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AT zechunhu optimalschedulingofpumpedstoragehydropowerplantswithmultitypeofunitsindayaheadelectricitymarketconsideringwaterheadeffects
AT jilincai optimalschedulingofpumpedstoragehydropowerplantswithmultitypeofunitsindayaheadelectricitymarketconsideringwaterheadeffects