Electricity Journal最新文献_第6页

Improved Transient Performance of a DFIG-Based Wind-Power System Using the Combined Control of Active Crowbars 利用主动撬棍组合控制改进dfig风力发电系统暂态性能

Electricity Journal Pub Date : 2023-11-14 DOI: 10.3390/electricity4040019

Muhammad Arif Sharafat Ali

{"title":"Improved Transient Performance of a DFIG-Based Wind-Power System Using the Combined Control of Active Crowbars","authors":"Muhammad Arif Sharafat Ali","doi":"10.3390/electricity4040019","DOIUrl":"https://doi.org/10.3390/electricity4040019","url":null,"abstract":"A significant electromotive force is induced in the rotor circuit of a doubly fed induction generator (DFIG) due to its high vulnerability to grid faults. Therefore, the system performance must be increased with appropriate control actions that can successfully offset such abnormalities in order to provide consistent and stable operations during grid disturbances. In this regard, this paper presents a solution based on a combination of an energy storage-based crowbar and a rotor-side crowbar that makes the effective transient current and voltage suppression for wind-driven DFIG possible. The core of the solution is its ability to restrict the transient rotor and stator overcurrents and DC-link overvoltages within their prescribed limits, thereby protecting the DFIG and power converters and improving the system’s ability to ride through faults. Further, the capacity of an energy storage device for transient suppression is estimated. The results confirmed that the proposed approach not only kept the transient rotor and stator currents within ±50% of their respective rated values in severe system faults but also limited the DC-link voltage variations under ±15% of its rated value, achieving transient control objectives precisely and maintaining a stable grid connection during the faults.","PeriodicalId":35642,"journal":{"name":"Electricity Journal","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-11-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134901207","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Impact of Communication System Characteristics on Electric Vehicle Grid Integration: A Large-Scale Practical Assessment of the UK’s Cellular Network for the Internet of Energy 通信系统特性对电动汽车电网整合的影响:对英国用于能源互联网的蜂窝网络的大规模实际评估

Electricity Journal Pub Date : 2023-11-03 DOI: 10.3390/electricity4040018

Mehdi Zeinali, Nuh Erdogan, Islam Safak Bayram, John S. Thompson

{"title":"Impact of Communication System Characteristics on Electric Vehicle Grid Integration: A Large-Scale Practical Assessment of the UK’s Cellular Network for the Internet of Energy","authors":"Mehdi Zeinali, Nuh Erdogan, Islam Safak Bayram, John S. Thompson","doi":"10.3390/electricity4040018","DOIUrl":"https://doi.org/10.3390/electricity4040018","url":null,"abstract":"The ever-increasing number of plug-in electric vehicles (PEVs) requires appropriate electric vehicle grid integration (EVGI) for charging coordination to maintain grid stability and enhance PEV user convenience. As such, the widespread adoption of electric mobility can be successful. EVGI is facilitated through charging stations and empowers PEV users to manage their charging demand by using smart charging solutions. This makes PEV grids assets that provide flexibility to the power grid. The Internet of Things (IoT) feature can make smooth EVGI possible through a supporting communication infrastructure. In this regard, the selection of an appropriate communication protocol is essential for the successful implementation of EVGI. This study assesses the efficacy of the UK’s 4G network with TCP and 4G UDP protocols for potential EVGI operations. For this, an EVGI emulation test bed is developed, featuring three charging parking lots with the capacity to accommodate up to 64 PEVs. The network’s performance is assessed in terms of data packet loss (e.g., the data-exchange capability between EVGI entities) and latency metrics. The findings reveal that while 4G TCP often outperforms 4G UDP, both achieve latencies of less than 1 s with confidence intervals of 90% or greater for single PEV cases. However, it is observed that the high penetration of PEVs introduces a pronounced latency due to queuing delays in the network including routers and the base station servers, highlighting the challenges associated with maintaining efficient EVGI coordination, which in turn affects the efficient use of grid assets.","PeriodicalId":35642,"journal":{"name":"Electricity Journal","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-11-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135868210","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Industry 4.0 in the electric sector: Findings from a systematic review of the literature 电力行业的工业 4.0：文献系统性审查结果

Electricity Journal Pub Date : 2023-11-01 DOI: 10.1016/j.tej.2023.107337

Wagner Luiz Botnar, Guilherme F. Frederico

{"title":"Industry 4.0 in the electric sector: Findings from a systematic review of the literature","authors":"Wagner Luiz Botnar, Guilherme F. Frederico","doi":"10.1016/j.tej.2023.107337","DOIUrl":"https://doi.org/10.1016/j.tej.2023.107337","url":null,"abstract":"<div><p><span><span>Also known as the Fourth Industrial Revolution<span>, the concept of Industry<span> 4.0 emerged in 2011 from a German government project, which stimulated the computerization of production lines in industries due to the increased demand for specific and personalized products using the growing evolution of new technologies that enabled the integration between machines in their production environment. Through a </span></span></span>systematic literature review, this study seeks to understand the concepts of Industry 4.0 in the electricity sector, considering the aspects of its planning and the expected structural benefits, both in the quality of distributed energy and, consequently, in the application of this energy for the automation of industrial productive processes and smart cities. This study found twelve main dimensions most cited by the authors, of which five constructs of Industry 4.0 in the electricity sector were formed: infrastructure, technologies, smart solutions, sustainability, and </span>energy management. Such constructs are interconnected like a gear system, on which each construct depends on the other. This study seeks to analyze the impacts, support elements, benefits, disadvantages, and the possibility of developing new procedures, products, and services that the technologies of Industry 4.0 can bring to the electrical sector and indirectly to its customers. It also aims to identify the factors that lead the top management to the right decision regarding the choice of technologies to increase efficiency and quality never previously achieved with current processes and technologies.</p></div>","PeriodicalId":35642,"journal":{"name":"Electricity Journal","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138713452","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Pricing evolution in the Colombian electricity market: Does regulation matter? 哥伦比亚电力市场的定价演变：监管重要吗？

Electricity Journal Pub Date : 2023-11-01 DOI: 10.1016/j.tej.2023.107340

Carolina María Gómez Pérez , Jorge Barrientos Marín

{"title":"Pricing evolution in the Colombian electricity market: Does regulation matter?","authors":"Carolina María Gómez Pérez , Jorge Barrientos Marín","doi":"10.1016/j.tej.2023.107340","DOIUrl":"https://doi.org/10.1016/j.tej.2023.107340","url":null,"abstract":"<div><p>Electricity pricing<span><span> ($/kWh) is a topic of widespread discussion, both for developing and developed countries, because it has begun a worrying upward trend that impacts the well-being of the entire population. Initially, it is expected to reflect the marginal costs of generation and to be affected mainly by the availability of primary resources for electricity generation and the interaction of agents in the market. However, regulations may lead to changes in this expected behavior, for Colombian case, several studies have highlighted the significant impact of the reliability charge (current capacity market in Colombia) on spot price formation, although this capacity market features remuneration independent of the energy market, and these revenues must reflect the costs associated with reliability. The present study conducts an impact evaluation on the </span>time series of the electricity spot price in Colombia to establish whether the resolution that established the reliability charge (CREG071/06) significantly affected the formation of the spot market price. The results suggest that the resolution under study increased the bid of generators in the short and long term, which was accompanied by an average increase of approximately 12% in the spot price of electricity in Colombia.</span></p></div>","PeriodicalId":35642,"journal":{"name":"Electricity Journal","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138713461","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Stronger typhoons, weaker electricity systems? A review of the impacts of extreme weather events on coastal communities and strategies for electric system resilience 更强的台风，更弱的电力系统？极端天气事件对沿海社区的影响及电力系统复原战略综述

Electricity Journal Pub Date : 2023-11-01 DOI: 10.1016/j.tej.2023.107339

Eireka Orlido Meregillano , Laurence L. Delina

{"title":"Stronger typhoons, weaker electricity systems? A review of the impacts of extreme weather events on coastal communities and strategies for electric system resilience","authors":"Eireka Orlido Meregillano , Laurence L. Delina","doi":"10.1016/j.tej.2023.107339","DOIUrl":"10.1016/j.tej.2023.107339","url":null,"abstract":"<div><p><span>Access to adequate and reliable electricity is paramount for the adaptation and resilience of typhoon-prone coastal communities, particularly in the face of intensifying challenges posed by climate change. Climate-related extreme weather events, such as typhoons and their consequent flooding and storm surges, exert significant pressure on electricity systems in these vulnerable regions, affecting every aspect from generation to transmission, distribution, and end-user utilization. Therefore, urgent action is required to fortify these communities with </span>electric systems<span> that are resilient enough to withstand such meteorological extremes. This review paper examines the far-reaching impacts of extreme weather events on electricity systems and showcases illuminating case studies that highlight innovative strategies to bolster these systems against such extremes. The review emphasizes the pivotal role<span> of meticulous energy planning, strong support from local governments, and the significance of infrastructure hardening in building resilient energy systems. Future research opportunities exist in integrating renewable energy, engaging community members, assessing climate risks, and cross-sectoral resilience.</span></span></p></div>","PeriodicalId":35642,"journal":{"name":"Electricity Journal","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138626248","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Collapse of Venezuela's electricity system: Informing revitalization efforts through energy transition opportunities 委内瑞拉电力系统的崩溃：通过能源转型机会为振兴工作提供信息

Electricity Journal Pub Date : 2023-11-01 DOI: 10.1016/j.tej.2023.107351

Paulo M. De Oliveira-De Jesus

{"title":"Collapse of Venezuela's electricity system: Informing revitalization efforts through energy transition opportunities","authors":"Paulo M. De Oliveira-De Jesus","doi":"10.1016/j.tej.2023.107351","DOIUrl":"https://doi.org/10.1016/j.tej.2023.107351","url":null,"abstract":"<div><p>Venezuela’s electricity sector has been facing a deep crisis. By 2020, the electricity production plummeted to 74.5 TWh, a drastic 43% reduction with respect to the peak of 132.5 TWh registered in 2013. The reasons behind the collapse of Venezuela’s electricity sector are multifactorial and widely described in the literature. However, there is a lack of discussion on how to overcome the electricity crisis, considering the new opportunities provided by the ongoing energy transition paradigm. In this paper, a review of existing views to recover Venezuela’s electricity system is provided. Two public-available detailed plans: the Venezuelan Electricity Sector Recovery Plan (VESRP) and the National Assembly’s Country Plan Electricity (CPE) are described and analyzed in detail. It is concluded that both proposals are pragmatic attempts to restore the reliable hydrothermal model that prevailed until 1998. However, there is a lack of insight about the economic and environmental opportunities of building a decarbonized electricity matrix in account of the existence of huge renewable energy resources. Fulfilling a balance between reconstructing Venezuela’s historic electricity system and building a new decarbonized system is of major significance. Urgent humanitarian needs and the demands of Venezuelan citizens call for the restoration of electricity supplies as fast as possible, but also with a modern system that ensures a low long-run marginal cost that enables competition and ensure economic growth.</p></div>","PeriodicalId":35642,"journal":{"name":"Electricity Journal","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138713460","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Cutting through complexity: Coordinated demand response and future directions in global communication technologies 突破复杂性：协调需求响应和全球通信技术的未来方向

Electricity Journal Pub Date : 2023-11-01 DOI: 10.1016/j.tej.2023.107338

Soheil Mohseni , Alan C. Brent

{"title":"Cutting through complexity: Coordinated demand response and future directions in global communication technologies","authors":"Soheil Mohseni , Alan C. Brent","doi":"10.1016/j.tej.2023.107338","DOIUrl":"https://doi.org/10.1016/j.tej.2023.107338","url":null,"abstract":"<div><p>The global electricity market is undergoing a transformative shift, envisioning a future resembling commodity trading platforms. Enabled by mature communication technologies, this evolution empowers energy consumers worldwide to actively engage in the energy market, negotiating arrangements for adjusting energy demand during grid stress and optimizing costs. In this era of technological advancements, this vision is materializing globally. Commercial and industrial entities are playing active roles in ancillary services markets, providing crucial grid support. Efforts are expanding to engage smaller users through third-party aggregators. However, many initiatives retain opt-in structures, limiting customer engagement. A promising solution is local energy markets, integrating modest flexibility reserves globally. This empowers small-scale users to choose services aligned with their preferences. This paper delves into the essential components facilitating the transition to globally applicable, aggregator-mediated demand-side management markets. Anchored in dynamic consumer engagement and nurtured by reciprocal information flows, this shift signals a fundamental reshaping of the global energy landscape. The paper introduces a universally adaptable demand response aggregation framework for energy enterprises to systematically devise consumer-centric programs. This framework serves as a foundational structure, fostering a strategic and flexible approach to meet evolving consumer preferences in demand response initiatives worldwide.</p></div>","PeriodicalId":35642,"journal":{"name":"Electricity Journal","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S1040619023001057/pdfft?md5=eb4cea99ba55b043923156cfd9dbdcfc&pid=1-s2.0-S1040619023001057-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138713453","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

Climate change, costs, or jobs: How policymakers frame state clean energy laws 气候变化、成本或就业：决策者如何制定州清洁能源法律

Electricity Journal Pub Date : 2023-11-01 DOI: 10.1016/j.tej.2023.107350

John H. Armstrong

{"title":"Climate change, costs, or jobs: How policymakers frame state clean energy laws","authors":"John H. Armstrong","doi":"10.1016/j.tej.2023.107350","DOIUrl":"https://doi.org/10.1016/j.tej.2023.107350","url":null,"abstract":"<div><p><span>Renewable portfolio standard (RPS) laws are among the most important climate change policies, requiring a minimum percentage of electricity from clean energy sources. From 2015–2022 in the U.S., eleven states enacted 100 % RPS laws and seven others strengthened their targets. This study examines the issue framing behind these recent RPS laws, which reflects and affects the political context surrounding the policies, people's views, and support among stakeholders. Through coding of policy documents, the study evaluates how policymakers have framed the policies, differences in framing between states with 100 % and non-100 % RPS targets, and variation in framing connected with political party and partisan votes. Surprisingly, given recommendations in the literature to downplay climate issues and emphasize economics, lawmakers predominantly framed 100 % clean </span>energy laws based on climate change. Policymakers that adopted non-100 % RPS laws utilized less climate framing and garnered more Republican Party legislator votes. The results indicate a distinction in framing between more modest and ambitious climate policies, raising a question about the applicability of recommendations urging minimization of climate messaging to transformative climate and clean energy policy efforts. Depending on political conditions, climate framing may be effective for ambitious energy approaches.</p></div>","PeriodicalId":35642,"journal":{"name":"Electricity Journal","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138713459","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Energy Conversion Optimization Method in Nano-Grids Using Variable Supply Voltage Adjustment Strategy Based on a Novel Inverse Maximum Power Point Tracking Technique (iMPPT) 基于新型逆最大功率点跟踪技术(iMPPT)的可变电源电压调整纳米电网能量转换优化方法

Electricity Journal Pub Date : 2023-10-10 DOI: 10.3390/electricity4040017

Lucian Nicolae Pintilie, Horia Cornel Hedeșiu, Călin Gheorghe Rusu, Petre Dorel Teodosescu, Călin Ignat Mărginean, Sorin Ionuț Salcu, Vasile Mihai Suciu, Norbert Csaba Szekely, Alexandru Mădălin Păcuraru

{"title":"Energy Conversion Optimization Method in Nano-Grids Using Variable Supply Voltage Adjustment Strategy Based on a Novel Inverse Maximum Power Point Tracking Technique (iMPPT)","authors":"Lucian Nicolae Pintilie, Horia Cornel Hedeșiu, Călin Gheorghe Rusu, Petre Dorel Teodosescu, Călin Ignat Mărginean, Sorin Ionuț Salcu, Vasile Mihai Suciu, Norbert Csaba Szekely, Alexandru Mădălin Păcuraru","doi":"10.3390/electricity4040017","DOIUrl":"https://doi.org/10.3390/electricity4040017","url":null,"abstract":"This paper introduces a novel power supply voltage adjustment strategy that can determine the optimum voltage value based on the amount of absorbed power. The novel automatic voltage adjustment technique was called inverse maximum power point tracking (iMPPT). The proposed control strategy consists of a modified maximum power point tracking (MPPT) algorithm (more precisely the P&O method). In this case, the modified MPPT technique establishes the minimum value of the input absorbed power of a consumer load served by a switched-mode power supply (SMPS). The iMPPT adjusts the input power by modifying the input voltage of the main power supply. The served loads are connected to the variable power supply via an interfacing power electronics converter that performs the automatic voltage regulation function (AVR). The optimal value of the input voltage level can be achieved when the input power of the automatic voltage regulation converter is at a minimum. In that case, the energy conversion efficiency ratio is at a maximum, and the overall losses related to the front-end power stage are at a minimum. The proposed technique can also be considered a Maximum Efficiency Tracking (MET) method. By performing the inverse operation of a maximum power point tracking algorithm on the input demanded power of a switched mode power supply (SMPS), the optimum input voltage level can be determined when the maximum energy conversion ratio (related to a given load level) is achieved. The novel proposed iMPPT method can improve the energy conversion ratio from 85% up to approximately 10% in the case of an output power level of 800 W served by a synchronous buck converter at the input voltage level of 350 V. The total amount of recovered power in this situation can be approximately 100 W.","PeriodicalId":35642,"journal":{"name":"Electricity Journal","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-10-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136358078","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Corrigendum to: “Electrification of mountainous rural areas and development: A case study of Eastern Pamirs” [Electr. J. 36 (2023) 107307] 更正：“山区农村地区的电气化与发展：东帕米尔的案例研究”[Electr.J.36（2023）107307]

Electricity Journal Pub Date : 2023-10-01 DOI: 10.1016/j.tej.2023.107320

Elkhan Richard Sadik-Zada , Andrea Gatto , Nasiba Sodatshoeva

引用次数: 0