Energy Conversion and Economics最新文献

Combined use of long short-term memory neural network and quantum computation for hierarchical forecasting of locational marginal prices

Energy Conversion and Economics Pub Date : 2025-02-17 DOI: 10.1049/enc2.70004

Xin Huang, Guozhong Liu, Jiajia Huan, Shuxin Luo, Jing Qiu, Feiyan Qin, Yunxia Xu

{"title":"Combined use of long short-term memory neural network and quantum computation for hierarchical forecasting of locational marginal prices","authors":"Xin Huang, Guozhong Liu, Jiajia Huan, Shuxin Luo, Jing Qiu, Feiyan Qin, Yunxia Xu","doi":"10.1049/enc2.70004","DOIUrl":"https://doi.org/10.1049/enc2.70004","url":null,"abstract":"Accurate locational marginal price forecasting (LMPF) is crucial for the efficient allocation of resources. Nevertheless, the sudden changes in LMP make it inadequate for many existing long short-term memory (LSTM) network-based prediction models to achieve the required accuracy for practical applications. This study adopts a hierarchical method of three layers based on double quantum-inspired grey wolf optimisation (QGWO) to improve the LSTM model (HD-QGWO-LSTM) for a one-step LMPF. The top layer completes the data processing. The middle layer is a QGWO-optimised support vector machine (SVM) for classifing whether LMPs are price spikes. The bottom laver is a double QGWO-improved LSTM (QGWO-LSTM) model for a real LMPF, where one QGWO-LSTM is for the spike LMPF and the other is for the non-spike LMPF. To address the issue of excessively long training times during the design of the LSTM network structure and parameter selection, a QGWO algorithm is proposed and used to optimise four LSTM parameters. The simulation results on the New England electricity market show that the HD-QGWO-LSTM method achieves similar prediction accuracy to other four LSTM-based methods. The results also validate that the QGWO algorithm significantly reduces time consumption while ensuring optimisation effectiveness when optimising SVM and LSTM.","PeriodicalId":100467,"journal":{"name":"Energy Conversion and Economics","volume":"6 1","pages":"51-63"},"PeriodicalIF":0.0,"publicationDate":"2025-02-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1049/enc2.70004","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143513713","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

A Stackelberg game-based model for low-carbon scheduling of commercial building loads considering lifecycle unit carbon-emission factors

Energy Conversion and Economics Pub Date : 2025-02-16 DOI: 10.1049/enc2.70000

Qifeng Huang, Zhong Zhuang, Meimei Duan, Shihai Yang, Ju Sheng, Yixuan Huang

{"title":"A Stackelberg game-based model for low-carbon scheduling of commercial building loads considering lifecycle unit carbon-emission factors","authors":"Qifeng Huang, Zhong Zhuang, Meimei Duan, Shihai Yang, Ju Sheng, Yixuan Huang","doi":"10.1049/enc2.70000","DOIUrl":"https://doi.org/10.1049/enc2.70000","url":null,"abstract":"The accelerated growth of smart cities and the intensifying impact of climate change have introduced new demands for low-carbon commercial buildings. The majority of existing low-carbon scheduling methods for commercial buildings focus on operational carbon emissions embedded in consumed electricity from the electricity network without a lifecycle perspective, resulting in the underestimation of the carbon emissions of consumed electricity. This article proposes a Stackelberg game model for low-carbon scheduling of commercial building loads. In this model, the lifecycle unit carbon-emission factors are calculated and then transferred to commercial buildings employing the carbon-emission flow method. Subsequently, a low-carbon scheduling model considering the carbon transaction, demand response, and thermal comfort is established for commercial building loads. Finally, the Stackelberg game model is implemented to determine the interaction between commercial buildings and the electricity network. The case study indicates that approximately 23% of indirect carbon emissions from electricity used in commercial buildings originate from the extraction, construction, transportation, demolition, and recycling stage, while approximately 77% occur during the operation stage.","PeriodicalId":100467,"journal":{"name":"Energy Conversion and Economics","volume":"6 1","pages":"26-40"},"PeriodicalIF":0.0,"publicationDate":"2025-02-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1049/enc2.70000","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143513695","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Characterising the resilience of electro–hydrogen coupled system via convex hull estimation

Energy Conversion and Economics Pub Date : 2025-02-14 DOI: 10.1049/enc2.70002

Siyuan Chang, Gengyin Li, Tiance Zhang, Ming Zhou, Qiteng Hong, Jianxiao Wang

{"title":"Characterising the resilience of electro–hydrogen coupled system via convex hull estimation","authors":"Siyuan Chang, Gengyin Li, Tiance Zhang, Ming Zhou, Qiteng Hong, Jianxiao Wang","doi":"10.1049/enc2.70002","DOIUrl":"https://doi.org/10.1049/enc2.70002","url":null,"abstract":"Frequent outbreaks of severe natural disasters underscore the importance of power system resilience. With high efficiency and rapid response, hydrogen energy can enhance power system resilience during such incidents. Traditional post-event resilience assessment methods, which are event-triggered, focus on a single indicator, leading to an ambiguous portrayal of the power capacity of coupled systems. To address this limitation, based on a two-stage electro–hydrogen coupled model, the concept of electro–hydrogen coupled region (EHCR) is proposed to illustrate the potential relationships between resilience indicators, exploring the accurate power capacity of the coupled system to critical loads during extreme events. The convex hull estimation is employed to determine the EHCR. A max–min diagnostic model is introduced as the convergence criterion for resilience margins. An external cutting-plane algorithm is developed to interactively obtain the EHCR by progressively eliminating non-capacity regions of the current space based on the diagnostic model. The efficacy of the proposed methods is validated through case studies based on an IEEE 30-bus and Belgium 20-node coupled system under ice disaster scenarios.","PeriodicalId":100467,"journal":{"name":"Energy Conversion and Economics","volume":"6 1","pages":"13-25"},"PeriodicalIF":0.0,"publicationDate":"2025-02-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1049/enc2.70002","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143513445","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

A distributed model-free adaptive voltage control algorithm for distribution systems with extensive integration of photovoltaics

Energy Conversion and Economics Pub Date : 2025-02-14 DOI: 10.1049/enc2.70003

Baoye Tian, Zhifei Guo, Baorong Zhou, Lijuan Fan, Zhuoming Deng, Yongjie Zhang, Zuowei You, Lingxue Lin

{"title":"A distributed model-free adaptive voltage control algorithm for distribution systems with extensive integration of photovoltaics","authors":"Baoye Tian, Zhifei Guo, Baorong Zhou, Lijuan Fan, Zhuoming Deng, Yongjie Zhang, Zuowei You, Lingxue Lin","doi":"10.1049/enc2.70003","DOIUrl":"https://doi.org/10.1049/enc2.70003","url":null,"abstract":"The widespread integration of photovoltaics (PVs) presents significant challenges to the operation and control of distribution systems, particularly in maintaining voltage stability at nodes with PV connections. To address these challenges, this paper proposes a voltage control algorithm based on distributed model-free adaptive control (MFAC). The control objective is to achieve real-time reactive-power-voltage coordination under constraints including PV power output limitations, voltage safety ranges, and the communication network topology. The proposed method estimates dynamic linearization parameters that represent the voltage control characteristics of the distribution systems by utilizing real-time data from distributed PVs and enabling communication between adjacent nodes. Rather than relying on a precise network model, the algorithm achieves robust voltage control by estimating these parameters from historical and real-time sampling data, employing a data-driven approach to iteratively update control strategies. Multi-scenario simulations of a 32-bus power system demonstrated the effectiveness and robustness of the algorithm across diverse operating conditions.","PeriodicalId":100467,"journal":{"name":"Energy Conversion and Economics","volume":"6 1","pages":"41-50"},"PeriodicalIF":0.0,"publicationDate":"2025-02-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1049/enc2.70003","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143513446","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Regulation of parallel converters based AC microgrid considering non-ideal grid conditions

Energy Conversion and Economics Pub Date : 2025-02-11 DOI: 10.1049/enc2.70001

Kripa Tiwari, Bhim Singh

{"title":"Regulation of parallel converters based AC microgrid considering non-ideal grid conditions","authors":"Kripa Tiwari, Bhim Singh","doi":"10.1049/enc2.70001","DOIUrl":"https://doi.org/10.1049/enc2.70001","url":null,"abstract":"This study proposes an alternating current microgrid that integrates renewable energy sources to enhance energy sustainability. In this system, wind and solar power are initially converted to DC using DC–DC converters; subsequently, they are integrated into a common AC bus through parallel voltage source converters. The goal is to provide uninterrupted power to local loads while addressing power quality issues and efficiently managing power flow within the system. The main contribution of this study is the development of a unified power flow strategy that ensures reliable power delivery by considering peak and off-peak electricity pricing, as well as the battery state of charge for optimised grid and storage utilisation. Moreover, when the power electronics circuitry is integrated with renewable energy sources, the grid encounters power quality issues at the point of common coupling. Therefore, to mitigate power quality issues at the point of common coupling, particularly with power electronics integration, a frequency-locked loop based on an amplitude integrator, coupled with a harmonic decoupling network, is used to extract the fundamental components of the grid voltage and reduce harmonic distortion. The proposed topology and control strategies are validated through laboratory testing using a hardware prototype, with the test results demonstrating their effectiveness.","PeriodicalId":100467,"journal":{"name":"Energy Conversion and Economics","volume":"6 1","pages":"1-12"},"PeriodicalIF":0.0,"publicationDate":"2025-02-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1049/enc2.70001","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143513693","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Distributed state estimation of interconnected power systems with time-varying disturbances and random communication link failures

Energy Conversion and Economics Pub Date : 2024-12-23 DOI: 10.1049/enc2.12135

Wenle Wang, Xinrui Liu, Zequn Wu, Yushuai Li, Zhiwei Guo, Qiuye Sun

{"title":"Distributed state estimation of interconnected power systems with time-varying disturbances and random communication link failures","authors":"Wenle Wang, Xinrui Liu, Zequn Wu, Yushuai Li, Zhiwei Guo, Qiuye Sun","doi":"10.1049/enc2.12135","DOIUrl":"https://doi.org/10.1049/enc2.12135","url":null,"abstract":"State estimation of multi-area interconnected power systems is crucial for reflecting system operations and guiding actuator responses. However, sensor faults, communication link failures, and external random disturbances can inevitably lead to power system failures. Therefore, designing a highly effective state estimation method capable of timely and accurate detection of sensor faults in the power grid to mitigate losses is of significant practical importance. This paper addresses the fault estimation problem in multi-area power systems with parameter uncertainties and proposes a fault-tolerant state estimator that accounts for communication link failures between network layers in each area. These communication link failures are modelled as Bernoulli-distributed variables. State estimation is achieved using information from adjacent power system areas. Sufficient conditions for the error system's <math>\u0000 <semantics>\u0000 <msub>\u0000 <mi>H</mi>\u0000 <mi>∞</mi>\u0000 </msub>\u0000 <annotation>${H}_infty $</annotation>\u0000 </semantics></math> performance are provided using Lyapunov stability theory and linear matrix inequality methods. Finally, simulations on a three-area interconnected power system validate the proposed method's effectiveness in mitigating the effects of communication link failures and random disturbances. The method accurately and rapidly estimates sensor faults and the system state, ensuring stable operation and enhancing grid reliability.","PeriodicalId":100467,"journal":{"name":"Energy Conversion and Economics","volume":"5 6","pages":"382-395"},"PeriodicalIF":0.0,"publicationDate":"2024-12-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1049/enc2.12135","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143253231","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Revenue stream tokenization with tranching of claim seniority in electricity markets

Energy Conversion and Economics Pub Date : 2024-12-20 DOI: 10.1049/enc2.12136

Almero de Villiers, Julie Byrne, Paul Cuffe

{"title":"Revenue stream tokenization with tranching of claim seniority in electricity markets","authors":"Almero de Villiers, Julie Byrne, Paul Cuffe","doi":"10.1049/enc2.12136","DOIUrl":"https://doi.org/10.1049/enc2.12136","url":null,"abstract":"This paper proposes tokenising generators' revenue streams as a novel financial instrument for electricity market risk management. The core idea is that tokenised revenue streams (RevToks) holders can directly claim a portion of a generator's energy market revenues. The novelty lies in exploring a tranched structure, creating a tiered hierarchy of RevTok claims. This approach addresses the financial challenges of non-dispatchable renewable energy generation and volatile electricity spot markets, which expose generation firms to volumetric and price risks, potentially deterring project financiers. The manuscript introduces tranching, a scheme for fractionalising energy market revenues based on RevTok seniority. Project financiers might hold senior RevToks, ensuring first claim on generator revenues, while bulk offtakers could purchase junior RevToks as a hedge against high wholesale prices. Case study market simulations indicate that these tranched revenue sharing arrangements can, in principle, help generators, financiers, and offtakers to better manage their risk exposure. The proposed system would allow RevTok holders to directly claim shares of specific generators' revenue streams, offering a new risk management tool for various electricity market participants.","PeriodicalId":100467,"journal":{"name":"Energy Conversion and Economics","volume":"5 6","pages":"358-369"},"PeriodicalIF":0.0,"publicationDate":"2024-12-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1049/enc2.12136","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143253055","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Towards carbon-free electricity: A flow-based framework for power grid carbon accounting and decarbonization

Energy Conversion and Economics Pub Date : 2024-12-12 DOI: 10.1049/enc2.12134

Xin Chen, Hungpo Chao, Wenbo Shi, Na Li

{"title":"Towards carbon-free electricity: A flow-based framework for power grid carbon accounting and decarbonization","authors":"Xin Chen, Hungpo Chao, Wenbo Shi, Na Li","doi":"10.1049/enc2.12134","DOIUrl":"https://doi.org/10.1049/enc2.12134","url":null,"abstract":"This study introduces a comprehensive framework aimed at advancing research and policy development in the realm of decarbonization within electric power systems. The framework focuses on three key aspects—carbon accounting, carbon-aware decision making, and carbon-electricity market design—and proposes solutions to existing problems. In contrast to traditional pool-based emission models, this framework proposes a novel flow-based emission model that incorporates the underlying physical power grid and power flows. Thus, the framework allows accurate carbon accounting at both the temporal and spatial scales, thereby facilitating informed decision-making to achieve grid decarbonization goals. The framework is built on a flow-based carbon accounting methodology and utilizes the carbon-aware optimal power flow technique as a theoretical foundation for decarbonization decision-making. Additionally, this study explores the potential design of carbon-electricity markets and pricing mechanisms to incentivize decentralized decarbonization actions. Critical issues of data availability, infrastructure development, fairness and equity considerations are also discussed.","PeriodicalId":100467,"journal":{"name":"Energy Conversion and Economics","volume":"5 6","pages":"396-418"},"PeriodicalIF":0.0,"publicationDate":"2024-12-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1049/enc2.12134","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143252507","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Modelling icing growth on overhead transmission lines: Current advances and future directions

Energy Conversion and Economics Pub Date : 2024-12-03 DOI: 10.1049/enc2.12131

Hui Hou, Yan Wang, Xiaolu Bai, Jianshuang Lv, Rongjian Cui, Lin Zhang, Shilong Li, Zhengmao Li

{"title":"Modelling icing growth on overhead transmission lines: Current advances and future directions","authors":"Hui Hou, Yan Wang, Xiaolu Bai, Jianshuang Lv, Rongjian Cui, Lin Zhang, Shilong Li, Zhengmao Li","doi":"10.1049/enc2.12131","DOIUrl":"https://doi.org/10.1049/enc2.12131","url":null,"abstract":"The increasing impact of climate change raises concerns regarding the vulnerability of overhead transmission lines to ice disasters. To address this issue, this study reviews icing growth modelling in two categories: physical-driven models (PDMs) and data-driven models (DDMs), covering current advances and future directions. First, PDMs are summarised, focusing on the thermodynamic and fluid mechanics mechanisms. Existing PDMs are compared based on principles, analysing their advantages, disadvantages, and challenges faced. Second, the summarisation of DDMs involves four aspects: data preparation, algorithm selection, model training, and model evaluation. In data preparation, techniques such as preprocessing methods are reviewed to handle multisource data. In algorithm selection, various modelling algorithms are compared and analysed, from basic to deep learning approaches. In model training, processes are summarised to enhance practical applicability, including data partitioning, hyperparameter adjustment, generalisation capability, and model interpretability. In model evaluation, the predictive capabilities are analysed, covering both regression and classification tasks. Subsequently, based on the analyses, a comparison of PDMs and DDMs across various aspects is presented. Finally, future directions in icing growth modelling are outlined. The aim is to enhance icing assessment by understanding the underlying mechanism in attempt to reduce vulnerability and ensure reliability against adverse weather conditions.","PeriodicalId":100467,"journal":{"name":"Energy Conversion and Economics","volume":"5 6","pages":"343-357"},"PeriodicalIF":0.0,"publicationDate":"2024-12-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1049/enc2.12131","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143248327","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Multi-level interval rolling warning method for distributed photovoltaic fluctuation events

Energy Conversion and Economics Pub Date : 2024-11-26 DOI: 10.1049/enc2.12133

Yumin Zhang, Yunrui Qi, Pingfeng Ye, Zhengmao Li, Jiajia Yang, Xingquan Ji

{"title":"Multi-level interval rolling warning method for distributed photovoltaic fluctuation events","authors":"Yumin Zhang, Yunrui Qi, Pingfeng Ye, Zhengmao Li, Jiajia Yang, Xingquan Ji","doi":"10.1049/enc2.12133","DOIUrl":"https://doi.org/10.1049/enc2.12133","url":null,"abstract":"The power fluctuation of distributed photovoltaic (PV) systems significantly impacts the balance of the power system, leading to risks like PV curtailment and load shedding. This paper proposes a multi-level rolling warning method for distributed PV power fluctuation (DPPF) based on interval analysis, aiming to establish a framework for proactively mitigating the potential adverse effects of fluctuations in distributed PV systems. Firstly, the power control mechanism to deal with DPPF is clarified, and warning levels are defined to determine the range of fluctuations that can be controlled by different power control measures. Secondly, based on the probability density of DPPF, the probabilities of each warning level are obtained by integrating the probability densities within each warning range. Finally, the differences in the forecasting accuracy of PV power fluctuations at different time scales are analysed, and the rolling warning of DPPF is achieved by periodically updating PV power output to adjust the warning results. Simulation results demonstrate that the proposed method identifies the thresholds for each warning range and provides warnings for different system operating conditions and PV power fluctuation events, confirming its effectiveness and applicability.","PeriodicalId":100467,"journal":{"name":"Energy Conversion and Economics","volume":"5 6","pages":"370-381"},"PeriodicalIF":0.0,"publicationDate":"2024-11-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1049/enc2.12133","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143253409","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0