Unlocking inter-regional flexibility for the HVDC-connected two-area system with a multistage model

In recent years, the deployment of high-voltage direct current (HVDC) tie-lines in power grids has become a prevalent solution in some countries to transmit renewable energy from remote locations to load centers. However, the variability and uncertainty associated with renewable energy generation po...

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Main Authors: Nan Wei, Luomeng Zhang, Siwei Liu, Hongxing Ye
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.2023.1323919/full
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author Nan Wei
Luomeng Zhang
Siwei Liu
Hongxing Ye
author_facet Nan Wei
Luomeng Zhang
Siwei Liu
Hongxing Ye
author_sort Nan Wei
collection DOAJ
description In recent years, the deployment of high-voltage direct current (HVDC) tie-lines in power grids has become a prevalent solution in some countries to transmit renewable energy from remote locations to load centers. However, the variability and uncertainty associated with renewable energy generation pose challenges to effectively utilizing this technology. This work proposes a novel multistage planning-operation model, aiming to unlock the potential flexibility in the HVDC transmission system and increase the renewable penetration. By incorporating flexibility, which is essential for accommodating the uncertainty in renewable generation, our model optimally shares the inter-regional flexibility between the sending- and receiving-end grids. One of the key features of our proposed model is its robustness and non-anticipativity, meaning it can account for different levels of uncertainty and make decisions that are suitable for multiple scenarios. This work develops two solution approaches to solve this challenging multistage model with variable uncertainty sets. We validate the proposed approach through a case study conducted on a real-world inter-regional grid. The numerical results demonstrate that our approach effectively unlocks more inter-regional flexibility and assists in increasing the renewable hosting capacity.
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spelling doaj.art-162ef1a8df4946d48e7f330d8a9ad68f2023-11-30T08:08:52ZengFrontiers Media S.A.Frontiers in Energy Research2296-598X2023-11-011110.3389/fenrg.2023.13239191323919Unlocking inter-regional flexibility for the HVDC-connected two-area system with a multistage modelNan Wei0Luomeng Zhang1Siwei Liu2Hongxing Ye3State Grid Economic and Tech. Research Institute Co., Ltd., Beijing, ChinaXi’an Jiaotong University, Xi’an, Shaanxi, ChinaState Grid Economic and Tech. Research Institute Co., Ltd., Beijing, ChinaXi’an Jiaotong University, Xi’an, Shaanxi, ChinaIn recent years, the deployment of high-voltage direct current (HVDC) tie-lines in power grids has become a prevalent solution in some countries to transmit renewable energy from remote locations to load centers. However, the variability and uncertainty associated with renewable energy generation pose challenges to effectively utilizing this technology. This work proposes a novel multistage planning-operation model, aiming to unlock the potential flexibility in the HVDC transmission system and increase the renewable penetration. By incorporating flexibility, which is essential for accommodating the uncertainty in renewable generation, our model optimally shares the inter-regional flexibility between the sending- and receiving-end grids. One of the key features of our proposed model is its robustness and non-anticipativity, meaning it can account for different levels of uncertainty and make decisions that are suitable for multiple scenarios. This work develops two solution approaches to solve this challenging multistage model with variable uncertainty sets. We validate the proposed approach through a case study conducted on a real-world inter-regional grid. The numerical results demonstrate that our approach effectively unlocks more inter-regional flexibility and assists in increasing the renewable hosting capacity.https://www.frontiersin.org/articles/10.3389/fenrg.2023.1323919/fullHVDC transmissionrenewable energyuncertaintysurrogate affine approximationimplicit decision method
spellingShingle Nan Wei
Luomeng Zhang
Siwei Liu
Hongxing Ye
Unlocking inter-regional flexibility for the HVDC-connected two-area system with a multistage model
Frontiers in Energy Research
HVDC transmission
renewable energy
uncertainty
surrogate affine approximation
implicit decision method
title Unlocking inter-regional flexibility for the HVDC-connected two-area system with a multistage model
title_full Unlocking inter-regional flexibility for the HVDC-connected two-area system with a multistage model
title_fullStr Unlocking inter-regional flexibility for the HVDC-connected two-area system with a multistage model
title_full_unstemmed Unlocking inter-regional flexibility for the HVDC-connected two-area system with a multistage model
title_short Unlocking inter-regional flexibility for the HVDC-connected two-area system with a multistage model
title_sort unlocking inter regional flexibility for the hvdc connected two area system with a multistage model
topic HVDC transmission
renewable energy
uncertainty
surrogate affine approximation
implicit decision method
url https://www.frontiersin.org/articles/10.3389/fenrg.2023.1323919/full
work_keys_str_mv AT nanwei unlockinginterregionalflexibilityforthehvdcconnectedtwoareasystemwithamultistagemodel
AT luomengzhang unlockinginterregionalflexibilityforthehvdcconnectedtwoareasystemwithamultistagemodel
AT siweiliu unlockinginterregionalflexibilityforthehvdcconnectedtwoareasystemwithamultistagemodel
AT hongxingye unlockinginterregionalflexibilityforthehvdcconnectedtwoareasystemwithamultistagemodel