Electricity Journal最新文献_第8页

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":"36 9","pages":"Article 107351"},"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":"36 9","pages":"Article 107338"},"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":"36 9","pages":"Article 107350"},"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":"84 1","pages":"0"},"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

Unlocking market secrets: Revealing wholesale electricity market price dynamics with a novel application of spectrum analysis 解开市场秘密：用频谱分析的新应用揭示批发电力市场价格动态

Electricity Journal Pub Date : 2023-10-01 DOI: 10.1016/j.tej.2023.107330

Martin J. Maticka , Thair S. Mahmoud

引用次数: 0

Does economic growth spark efficiency? Unveiling the Electricity Kuznets Curve (ELKC) in ASEAN-5 nations 经济增长能提高效率吗?揭示东盟五国电力库兹涅茨曲线(ELKC)

Electricity Journal Pub Date : 2023-10-01 DOI: 10.1016/j.tej.2023.107333

Khalid M. Kisswani , Mahelet G. Fikru

{"title":"Does economic growth spark efficiency? Unveiling the Electricity Kuznets Curve (ELKC) in ASEAN-5 nations","authors":"Khalid M. Kisswani , Mahelet G. Fikru","doi":"10.1016/j.tej.2023.107333","DOIUrl":"https://doi.org/10.1016/j.tej.2023.107333","url":null,"abstract":"<div><p>We contribute to the conventional Environmental Kuznets Curve<span><span> literature by modeling the relationship between income and electric power consumption<span> among five Asian economies (ASEAN-5): Indonesia, Malaysia, the Philippines, Singapore, and Thailand. Economic growth together with rapid urbanization contributes to increases in electricity use. Still, it is not clearly understood whether and to what extent improvements in technology could ultimately allow a more efficient use of power. We test whether electricity consumption follows an inverted U-shape curve (Electricity Kuznets Curve, ELKC) using the unrestricted error correction model fitted on historical data for each country. The long-run results indicate that the ELKC hypothesis is detected in Indonesia, the Philippines, and Singapore. Our results suggest that if these countries continue to follow the ELKC trajectory, further increases in income could facilitate energy-efficiency innovations to prevent a monotonic relationship between growth and electric power use. The finding implies that there is room for policies to incentivize </span></span>energy efficiency measures in multiple sectors.</span></p></div>","PeriodicalId":35642,"journal":{"name":"Electricity Journal","volume":"36 8","pages":"Article 107333"},"PeriodicalIF":0.0,"publicationDate":"2023-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136697393","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

The costs of “crony capitalism” in regional transmission grid expansion 区域输电网扩张中的“裙带资本主义”成本

Electricity Journal Pub Date : 2023-10-01 DOI: 10.1016/j.tej.2023.107335

Jim Rossi

{"title":"The costs of “crony capitalism” in regional transmission grid expansion","authors":"Jim Rossi","doi":"10.1016/j.tej.2023.107335","DOIUrl":"https://doi.org/10.1016/j.tej.2023.107335","url":null,"abstract":"<div><p>There is an urgent need to expand regional transmission lines for reliability and clean energy, while also ensuring that new infrastructure investments are cost effective. However, several states have enacted – and some continue to consider – laws that grant incumbent monopoly<span> utilities a right-of-first-refusal (ROFR) to build new electric power transmission<span> lines. Transmission ROFR laws, such as those enacted by several Midwestern states, allow regional grid<span> planners to select new transmission line projects without running competitive solicitations. While incumbent utilities have continued to lobby state legislatures to adopt transmission ROFR laws, the best evidence available shows that ROFR laws are harmful to customer welfare. Customers affected by ROFR laws do not realize the cost savings and other benefits of competition in transmission line selection, including superior cost containment and innovative grid modernization solutions. In addition, uncertainty about the legality of transmission ROFR laws–what the Iowa Supreme Court has called “crony capitalism”--does not promote a stable investment environment for new transmission infrastructure. Instead of enacting and continuing to endorse transmission ROFRs, states would better promote cost-effective grid modernization by encouraging competitive bidding selection processes for new regional transmission lines. Cost-effective transmission planning requires regulators to balance a broad range of factors in permitting and cost recovery for projects. State regulators commonly use such approaches to evaluate the purchase of power generation from competitive sources. Regional transmission line projects could benefit from similar safeguards to protect customers.</span></span></span></p></div>","PeriodicalId":35642,"journal":{"name":"Electricity Journal","volume":"36 8","pages":"Article 107335"},"PeriodicalIF":0.0,"publicationDate":"2023-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138436756","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

A new era for rural electric cooperatives: New clean energy investments, supported by federal incentives, will reduce rates, emissions, and reliance on outside power 农村电力合作社的新时代:新的清洁能源投资，在联邦激励措施的支持下，将降低利率、排放和对外部电力的依赖

Electricity Journal Pub Date : 2023-10-01 DOI: 10.1016/j.tej.2023.107334

Nikit Abhyankar , Umed Paliwal , Michael O’Boyle , Michelle Solomon , Jeremy Fisher , Amol Phadke

{"title":"A new era for rural electric cooperatives: New clean energy investments, supported by federal incentives, will reduce rates, emissions, and reliance on outside power","authors":"Nikit Abhyankar , Umed Paliwal , Michael O’Boyle , Michelle Solomon , Jeremy Fisher , Amol Phadke","doi":"10.1016/j.tej.2023.107334","DOIUrl":"https://doi.org/10.1016/j.tej.2023.107334","url":null,"abstract":"<div><p>This paper shows a least cost electricity generation portfolio for some of the largest rural electric cooperative utilities in the US. Due to the recent dramatic declines in renewable energy and battery storage costs, along with incentives under the federal Inflation Reduction Act (IRA) and excellent quality of renewable resource potential, we find that new investments in clean energy are significantly more cost-effective for most cooperative utilities than operating their existing coal and gas fired power plants. The study shows that rapid renewable energy (RE) deployment offers the rural cooperatives an opportunity to reduce their wholesale electricity costs by 10–20% compared with 2021 levels, while retiring their entire coal capacity by 2032. Most utilities could reduce their CO<sub>2</sub> emissions by 80–90% relative to the 2021 levels, while also meeting load requirements at all hours, ensuring power supply reliability. While significant financing would be needed for such a transition to clean energy, we find that nearly half of the investments can be offset by the IRA tax credits. With bold and timely execution, cooperatives can reinvent their generation mix to provide affordable, reliable, and clean electricity that benefits rural communities.</p></div>","PeriodicalId":35642,"journal":{"name":"Electricity Journal","volume":"36 8","pages":"Article 107334"},"PeriodicalIF":0.0,"publicationDate":"2023-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S104061902300101X/pdfft?md5=12807fc2b256ad8e9cf6db6d7c56ff9b&pid=1-s2.0-S104061902300101X-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134656366","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

Energy storage for the provision of a secondary frequency control service: Evidence in the Colombian market 用于提供二次频率控制服务的储能：哥伦比亚市场的证据

Electricity Journal Pub Date : 2023-10-01 DOI: 10.1016/j.tej.2023.107329

Alejandro Gutiérrez Gómez , Ramón Alberto León Candela , John Garcia Rendon

{"title":"Energy storage for the provision of a secondary frequency control service: Evidence in the Colombian market","authors":"Alejandro Gutiérrez Gómez , Ramón Alberto León Candela , John Garcia Rendon","doi":"10.1016/j.tej.2023.107329","DOIUrl":"https://doi.org/10.1016/j.tej.2023.107329","url":null,"abstract":"<div><p>In this article, we evaluate three alternatives for incorporating storage systems in the secondary frequency control service in the Colombian energy market. The first method is to maintain the current auction mechanism linked to the energy offer but including BESS in competition with established generators. The second is to implement mid-term auctions for services providing both generators and Battery Energy Storage Systems, while the third alternative suggests the adoption of long-term auctions with BESS remuneration based on the rate of return methodology. These long-term auctions operate in conjunction with the well-established framework for service provision, utilising generation assets. Based on our results, the latter two alternatives exhibit superior efficiency. Compared to the current scheme, these alternatives have the advantages of: improved efficiency in price forming, minimum impact on the energy market, and decreased service costs. Whereas the annual remuneration under the current mechanism amounts to USD 105 million, alternatives achieve savings from around 7% (only for 50 MW of reserve provision with BESS) to 50% (100% BESS service provision), related to current service costs. This means annual savings of up to USD 62 million. In any of these systems, the operation efficiency is increased, since battery energy storage systems are devices with faster response times to frequency changes.</p></div>","PeriodicalId":35642,"journal":{"name":"Electricity Journal","volume":"36 8","pages":"Article 107329"},"PeriodicalIF":0.0,"publicationDate":"2023-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"50183352","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