Global Energy Interconnection最新文献_第9页

Construction and application of knowledge graph for grid dispatch fault handling based on pre-trained model 基于预训练模型的电网调度故障处理知识图的构建与应用

Global Energy Interconnection Pub Date : 2023-08-01 DOI: 10.1016/j.gloei.2023.08.009

Zhixiang Ji , Xiaohui Wang , Jie Zhang , Di Wu

{"title":"Construction and application of knowledge graph for grid dispatch fault handling based on pre-trained model","authors":"Zhixiang Ji , Xiaohui Wang , Jie Zhang , Di Wu","doi":"10.1016/j.gloei.2023.08.009","DOIUrl":"10.1016/j.gloei.2023.08.009","url":null,"abstract":"<div><p>With the construction of new power systems, the power grid has become extremely large, with an increasing proportion of new energy and AC/DC hybrid connections. The dynamic characteristics and fault patterns of the power grid are complex; additionally, power grid control is difficult, operation risks are high, and the task of fault handling is arduous. Traditional power-grid fault handling relies primarily on human experience. The difference in and lack of knowledge reserve of control personnel restrict the accuracy and timeliness of fault handling. Therefore, this mode of operation is no longer suitable for the requirements of new systems. Based on the multi-source heterogeneous data of power grid dispatch, this paper proposes a joint entity–relationship extraction method for power-grid dispatch fault processing based on a pre-trained model, constructs a knowledge graph of power-grid dispatch fault processing and designs, and develops a fault-processing auxiliary decision-making system based on the knowledge graph. It was applied to study a provincial dispatch control center, and it effectively improved the accident processing ability and intelligent level of accident management and control of the power grid.</p></div>","PeriodicalId":36174,"journal":{"name":"Global Energy Interconnection","volume":"6 4","pages":"Pages 493-504"},"PeriodicalIF":0.0,"publicationDate":"2023-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45804647","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

Daily rolling estimation of carbon emission cost of coal-fired units considering long-cycle interactive operation simulation of carbon-electricity market 考虑碳电市场长周期交互运行模拟的燃煤机组碳排放成本日滚动估算

Global Energy Interconnection Pub Date : 2023-08-01 DOI: 10.1016/j.gloei.2023.08.007

Mingjie Ma , Lili Hao , Zhengfeng Wang , Zi Yang , Chen Xu , Guangzong Wang , Xueping Pan , Jun Li

{"title":"Daily rolling estimation of carbon emission cost of coal-fired units considering long-cycle interactive operation simulation of carbon-electricity market","authors":"Mingjie Ma , Lili Hao , Zhengfeng Wang , Zi Yang , Chen Xu , Guangzong Wang , Xueping Pan , Jun Li","doi":"10.1016/j.gloei.2023.08.007","DOIUrl":"10.1016/j.gloei.2023.08.007","url":null,"abstract":"<div><p>The high overlap of participants in the carbon emissions trading and electricity markets couples the operations of the two markets. The carbon emission cost (CEC) of coal-fired units becomes part of the power generation cost through market coupling. The accuracy of CEC calculation affects the clearing capacity of coal-fired units in the electric power market. Study of carbon–electricity market interaction and CEC calculations is still in its initial stages. This study analyzes the impact of carbon emissions trading and compliance on the operation of the electric power market and defines the cost transmission mode between the carbon emissions trading and electric power markets. A long-period interactive operation simulation mechanism for the carbon–electricity market is established, and operation and trading models of the carbon emissions trading market and electric power market are established. A daily rolling estimation method for the CEC of coal- fired units is proposed, along with the CEC per unit electric quantity of the coal-fired units. The feasibility and effectiveness of the proposed method are verified through an example simulation, and the factors influencing the CEC are analyzed.</p></div>","PeriodicalId":36174,"journal":{"name":"Global Energy Interconnection","volume":"6 4","pages":"Pages 467-484"},"PeriodicalIF":0.0,"publicationDate":"2023-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42068960","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

Data-driven source-load robust optimal scheduling of integrated energy production unit including hydrogen energy coupling 数据驱动的含氢能耦合综合发电机组源负荷鲁棒优化调度

Global Energy Interconnection Pub Date : 2023-08-01 DOI: 10.1016/j.gloei.2023.08.001

Jinling Lu, Dingyue Huang, Hui Ren

{"title":"Data-driven source-load robust optimal scheduling of integrated energy production unit including hydrogen energy coupling","authors":"Jinling Lu, Dingyue Huang, Hui Ren","doi":"10.1016/j.gloei.2023.08.001","DOIUrl":"10.1016/j.gloei.2023.08.001","url":null,"abstract":"<div><p>A robust low-carbon economic optimal scheduling method that considers source-load uncertainty and hydrogen energy utilization is developed. The proposed method overcomes the challenge of source-load random fluctuations in integrated energy systems (IESs) in the operation scheduling problem of integrated energy production units (IEPUs). First, to solve the problem of inaccurate prediction of renewable energy output, an improved robust kernel density estimation method is proposed to construct a data-driven uncertainty output set of renewable energy sources statistically and build a typical scenario of load uncertainty using stochastic scenario reduction. Subsequently, to resolve the problem of insufficient utilization of hydrogen energy in existing IEPUs, a robust low-carbon economic optimal scheduling model of the source-load interaction of an IES with a hydrogen energy system is established. The system considers the further utilization of energy using hydrogen energy coupling equipment (such as hydrogen storage devices and fuel cells) and the comprehensive demand response of load-side schedulable resources. The simulation results show that the proposed robust stochastic optimization model driven by data can effectively reduce carbon dioxide emissions, improve the source-load interaction of the IES, realize the efficient use of hydrogen energy, and improve system robustness.</p></div>","PeriodicalId":36174,"journal":{"name":"Global Energy Interconnection","volume":"6 4","pages":"Pages 375-388"},"PeriodicalIF":0.0,"publicationDate":"2023-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42344421","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

Correlation knowledge extraction based on data mining for distribution network planning 基于数据挖掘的配电网规划相关知识提取

Global Energy Interconnection Pub Date : 2023-08-01 DOI: 10.1016/j.gloei.2023.08.008

Zhifang Zhu , Zihan Lin , Liping Chen , Hong Dong , Yanna Gao , Xinyi Liang , Jiahao Deng

{"title":"Correlation knowledge extraction based on data mining for distribution network planning","authors":"Zhifang Zhu , Zihan Lin , Liping Chen , Hong Dong , Yanna Gao , Xinyi Liang , Jiahao Deng","doi":"10.1016/j.gloei.2023.08.008","DOIUrl":"10.1016/j.gloei.2023.08.008","url":null,"abstract":"<div><p>Traditional distribution network planning relies on the professional knowledge of planners, especially when analyzing the correlations between the problems existing in the network and the crucial influencing factors. The inherent laws reflected by the historical data of the distribution network are ignored, which affects the objectivity of the planning scheme. In this study, to improve the efficiency and accuracy of distribution network planning, the characteristics of distribution network data were extracted using a data-mining technique, and correlation knowledge of existing problems in the network was obtained. A data-mining model based on correlation rules was established. The inputs of the model were the electrical characteristic indices screened using the gray correlation method. The Apriori algorithm was used to extract correlation knowledge from the operational data of the distribution network and obtain strong correlation rules. Degree of promotion and chi-square tests were used to verify the rationality of the strong correlation rules of the model output. In this study, the correlation relationship between heavy load or overload problems of distribution network feeders in different regions and related characteristic indices was determined, and the confidence of the correlation rules was obtained. These results can provide an effective basis for the formulation of a distribution network planning scheme.</p></div>","PeriodicalId":36174,"journal":{"name":"Global Energy Interconnection","volume":"6 4","pages":"Pages 485-492"},"PeriodicalIF":0.0,"publicationDate":"2023-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43592918","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

Research on the optimization strategy of customers’ electricity consumption based on big data 基于大数据的客户用电优化策略研究

Global Energy Interconnection Pub Date : 2023-06-01 DOI: 10.1016/j.gloei.2023.06.002

Jiangping Liu , Zong Wang , Hui Hu , Shaoxiang Xu , Jiabin Wang , Ying Liu

引用次数: 0

Design and analysis of a high loss density motor cooling system with water cold plates 水冷板高损耗密度电机冷却系统的设计与分析

Global Energy Interconnection Pub Date : 2023-06-01 DOI: 10.1016/j.gloei.2023.06.008

Xin Zhao , Haojie Cui , Yun Teng , Zhe Chen , Guangwei Liu

{"title":"Design and analysis of a high loss density motor cooling system with water cold plates","authors":"Xin Zhao , Haojie Cui , Yun Teng , Zhe Chen , Guangwei Liu","doi":"10.1016/j.gloei.2023.06.008","DOIUrl":"10.1016/j.gloei.2023.06.008","url":null,"abstract":"<div><p>Aiming at reducing the difficulty of cooling the interior of high-density motors, this study proposed the placement of a water cold plate cooling structure between the axial laminations of the motor stator. The effect of the cooling water flow, thickness of the plate, and motor loss density on the cooling effect of the water cold plate were studied. To compare the cooling performance of water cold plate and outer spiral water jacket cooling structures, a high-speed permanent magnet motor with a high loss density was used to establish two motor models with the two cooling structures. Consequently, the cooling effects of the two models were analyzed using the finite element method under the same loss density, coolant flow, and main dimensions. The results were as follows. (1) The maximum and average temperatures of the water cold plate structure were reduced by 25.5% and 30.5%, respectively, compared to that of the outer spiral water jacket motor; .(2) Compared with the outer spiral water jacket structure, the water cold plate structure can reduce the overall mass and volume of the motor. Considering a 100 kW high-speed permanent magnet motor as an example, a water cold plate cooling system was designed, and the temperature distribution is analyzed, with the result indicating that the cooling structure satisfied the cooling requirements of the high loss density motor.</p></div>","PeriodicalId":36174,"journal":{"name":"Global Energy Interconnection","volume":"6 3","pages":"Pages 343-354"},"PeriodicalIF":0.0,"publicationDate":"2023-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42755570","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

Non-intrusive temperature rise fault-identification of distribution cabinet based on tensor block-matching 基于张量块匹配的配电柜非侵入式温升故障识别

Global Energy Interconnection Pub Date : 2023-06-01 DOI: 10.1016/j.gloei.2023.06.006

Jie Tong, Yuanpeng Tan, Zhonghao Zhang, Qizhe Zhang, Wenhao Mo, Yingqiang Zhang, Zihao Qi

{"title":"Non-intrusive temperature rise fault-identification of distribution cabinet based on tensor block-matching","authors":"Jie Tong, Yuanpeng Tan, Zhonghao Zhang, Qizhe Zhang, Wenhao Mo, Yingqiang Zhang, Zihao Qi","doi":"10.1016/j.gloei.2023.06.006","DOIUrl":"10.1016/j.gloei.2023.06.006","url":null,"abstract":"<div><p>In this study, a novel non-intrusive temperature rise fault-identification method for a distribution cabinet based on tensor block-matching is proposed. Two-stage data repair is used to reconstruct the temperature-field information to support the demand for temperature rise fault-identification of non-intrusive distribution cabinets. In the coarse-repair stage, this method is based on the outside temperature information of the distribution cabinet, using tensor block-matching technology to search for an appropriate tensor block in the temperature-field tensor dictionary, filling the target space area from the outside to the inside, and realizing the reconstruction of the three-dimensional temperature field inside the distribution cabinet. In the fine-repair stage, tensor super-resolution technology is used to fill the temperature field obtained from coarse repair to realize the smoothing of the temperature-field information inside the distribution cabinet. Non-intrusive temperature rise fault-identification is realized by setting clustering rules and temperature thresholds to compare the location of the heat source with the location of the distribution cabinet components. The simulation results show that the temperature- field reconstruction error is reduced by 82.42% compared with the traditional technology, and the temperature rise fault- identification accuracy is greater than 86%, verifying the feasibility and effectiveness of the temperature-field reconstruction and temperature rise fault-identification.</p></div>","PeriodicalId":36174,"journal":{"name":"Global Energy Interconnection","volume":"6 3","pages":"Pages 324-333"},"PeriodicalIF":0.0,"publicationDate":"2023-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44402418","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

Optimal guidance strategy for flexible load based on hybrid direct load control and time of use 基于直接负载和使用时间混合控制的柔性负载最优制导策略

Global Energy Interconnection Pub Date : 2023-06-01 DOI: 10.1016/j.gloei.2023.06.004

Siyang Liu , Yuan Gao , Hejun Yang , Xinghua Xie , Yinghao Ma

引用次数: 0

Small-signal modelling and stability analysis of grid-following and grid-forming inverters dominated power system 并网逆变器主导电力系统的小信号建模与稳定性分析

Global Energy Interconnection Pub Date : 2023-06-01 DOI: 10.1016/j.gloei.2023.06.010

Yaran Li , Long Fu , Qiang Li , Wei Wang , Yubin Jia , Zhao Yang Dong

引用次数: 1

Impact of interconnections and renewable energy integration on the Philippine–Sabah Power Grid systems 互联和可再生能源整合对菲律宾-沙巴电网系统的影响

Global Energy Interconnection Pub Date : 2023-06-01 DOI: 10.1016/j.gloei.2023.06.001

Tristan G. Magallones Jr. , Jai Govind Singh

{"title":"Impact of interconnections and renewable energy integration on the Philippine–Sabah Power Grid systems","authors":"Tristan G. Magallones Jr. , Jai Govind Singh","doi":"10.1016/j.gloei.2023.06.001","DOIUrl":"10.1016/j.gloei.2023.06.001","url":null,"abstract":"<div><p>This study presents a comprehensive impact analysis of the rotor angle stability of a proposed international connection between the Philippines and Sabah, Malaysia, as part of the Association of Southeast Asian Nations (ASEAN) Power Grid. This study focuses on modeling and evaluating the dynamic performance of the interconnected system, considering the high penetration of renewable sources. Power flow, small signal stability, and transient stability analyses were conducted to assess the ability of the proposed linked power system models to withstand small and large disturbances, utilizing the Power Systems Analysis Toolbox (PSAT) software in MATLAB. All components used in the model are documented in the PSAT library. Currently, there is a lack of publicly available studies regarding the implementation of this specific system. Additionally, the study investigates the behavior of a system with a high penetration of renewable energy sources. Based on the findings, this study concludes that a system is generally stable when interconnection is realized, given its appropriate location and dynamic component parameters. Furthermore, the critical eigenvalues of the system also exhibited improvement as the renewable energy sources were augmented</p></div>","PeriodicalId":36174,"journal":{"name":"Global Energy Interconnection","volume":"6 3","pages":"Pages 253-272"},"PeriodicalIF":0.0,"publicationDate":"2023-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44957469","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