Energija, ekonomija, ekologija最新文献

Realizacija onlajn sistema monitoringa potrošnje i kontrole kvaliteta napajanja u kompaniji Gruner Serbian doo 在 Gruner Serbian 有限公司实施在线系统，以监测消耗和控制供电质量。

Energija, ekonomija, ekologija Pub Date : 2023-12-01 DOI: 10.46793/eee22-4.53s

Simonović Bojan, Vuković Miodrag, Despotović Željko V.

{"title":"Realizacija onlajn sistema monitoringa potrošnje i kontrole kvaliteta napajanja u kompaniji Gruner Serbian doo","authors":"Simonović Bojan, Vuković Miodrag, Despotović Željko V.","doi":"10.46793/eee22-4.53s","DOIUrl":"https://doi.org/10.46793/eee22-4.53s","url":null,"abstract":"The paper presents the realization of the system for consumption monitoring and the system for power quality control in the hall 4 of the company GRUNER Serbian d.o.o. in Vlasotince, Serbia. The motivation for the establishment of the mentioned systems are machine failures within the warranty period for which the machine suppliers refuse to recognize the warranty, due to poor voltage conditions and frequent power sags within the industrial plant. Power quality problems are caused by external influences coming from the power supply network. For these reasons, a system of power etwork analysers was designed and implemented by the company Conseko d.o.o., Belgrade. This system monitors and records all relevant parameters of power quality (voltages, currents, active and reactive power, power factor, harmonic content, THD, etc.) in key parts of the hall 4 (molding, air conditioning, tool room, dining room, laboratory, etc.). In addition to this, the monitoring system provides complete insight into consumption and distribution of consumption at a given time interval, which represents an exceptional convenience for optimal distribution of internal consumption and financial calculation of power consumption of each subsystem, which directly affects to the economic profit. The Cloud subsystem is also installed in the system, so that all relevant parameters can be monitored in real time via a remote computer or through an application on a mobile phone.","PeriodicalId":236996,"journal":{"name":"Energija, ekonomija, ekologija","volume":"346 ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138991724","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

Uticaj kvaliteta uglja na ostvarenu snagu generatora termoelektrane nazivne snage 300 MW 木炭质量对 300 兆瓦热电发电机功率输出的影响

Energija, ekonomija, ekologija Pub Date : 2023-12-01 DOI: 10.46793/eee23-4.63m

Miljković Nikola, Jovanović Nikola, Jovanović Aca

引用次数: 0

Predviđanje proizvodnje termoelektrane pomoću neuralnih mreža 用神经网络预测热发电量

Energija, ekonomija, ekologija Pub Date : 2023-12-01 DOI: 10.46793/eee23-4.38k

Knežević Sonja, Žarković Mileta

引用次数: 0

Unapređivanje načina obračuna pristupa distributivnom sistemu električne energije 接入配电系统的非预付费模式

Energija, ekonomija, ekologija Pub Date : 2023-12-01 DOI: 10.46793/eee23-4.28g

Grujić Dunja, Kuzman Miloš, Djurišić Željko

{"title":"Unapređivanje načina obračuna pristupa distributivnom sistemu električne energije","authors":"Grujić Dunja, Kuzman Miloš, Djurišić Željko","doi":"10.46793/eee23-4.28g","DOIUrl":"https://doi.org/10.46793/eee23-4.28g","url":null,"abstract":"The method of calculating access to the electricity distribution system is a topic that has attracted the attention of the experts in the Republic of Serbia in recent years. This issue is more complex by the connection of an increasing number of new users to the electricity distribution system, such as prosumers or electric vehicle charging stations. Among the many challenges that the electricity distribution system operator faces in his work are finding ways to reduce electricity losses in the distribution system and the costs associated with them, as well as difficulties in system management due to the connection of new system users. Some of the challenges are the: need for the modernization of measuring infrastructure, the necessity for automation of the power grid and the need for necessary investments in the power system in order to enable the connection of new users. In this paper, proposals will be given for improving the process of collecting data from electricity meters and calculating access to the electricity distribution system. Existing legislation will also be analysed in order to enable the improvement of the regulatory framework for the purpose of implementing the proposed solutions. Examples from the reference international practice in this area shall be also presented. Additionally, data on the consumption of system users at the level of one distribution substation at the hourly and monthly level for the reference year will be considered. Based on the conducted analysis, a model will be developed for changing the process of collecting data from electricity meters and the method of calculating access to the electricity distribution system. The paper will also present the results of model testing on several relevant examples, and the impact of the model on the work of electricity distribution system operators as well as on system users and participants in the electricity market.","PeriodicalId":236996,"journal":{"name":"Energija, ekonomija, ekologija","volume":"231 ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139013865","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

Statistička analiza procene vetropotencijala na teritoriji grada Kragujevca 克拉古耶瓦茨镇境内的意外收获率统计分析

Energija, ekonomija, ekologija Pub Date : 2023-12-01 DOI: 10.46793/eee23-4.48n

Nešović Aleksandar, Komatina Nikola

引用次数: 0

Analiza magnetnog polja i privlačne sile elektromagnetnog separatora metodom konačnih elemenata 电磁分离器磁场和吸引力的有限元分析

Energija, ekonomija, ekologija Pub Date : 2023-12-01 DOI: 10.46793/eee23-4.18d

Despotović Željko V., Lekić Djordje M.

引用次数: 0

Idejno rešenje zelenog PV – vodonik kompleksa na postojećoj infrastrukturi termoelektrane „Morava” 莫拉瓦（Morava）热电厂建设后基础设施上的绿色光伏-氢气综合体概念设计

Energija, ekonomija, ekologija Pub Date : 2023-12-01 DOI: 10.46793/eee22-4.10d

Dimić Mina, Djurišić Željko, Stančević Perica

引用次数: 0

Detekcija i otklanjanje uzroka nestabilnog rada sistema 探测和检测不稳定的雷达系统节点

Energija, ekonomija, ekologija Pub Date : 2023-12-01 DOI: 10.46793/eee23-4.57i

Ivanović Bojan

{"title":"Detekcija i otklanjanje uzroka nestabilnog rada sistema","authors":"Ivanović Bojan","doi":"10.46793/eee23-4.57i","DOIUrl":"https://doi.org/10.46793/eee23-4.57i","url":null,"abstract":"Small-signal stability, which is also called static stability or modal analysis, deals with system stability in case of small disturbances such as consumption and production variations on hourly and daily basis. Advantage of this type of analysis is its global character because it provides all system state matrix eigenvalues, i.e. system poles, within single system calculation. Existence of single system pole with positive real part indicates unstable system. Measure of relative participation of a particular state variable, which is correlated to particular generator, and particular system pole is provided by calculating participation factors. Sorting of participation factors for all system poles in descending order and establishing a correlation to certain state variable of particular generator provides feedback to generators that are dominant causes of existence of system poles with positive real part. The paper presents calculation of system eigenvalues and establishment of user feedback to generator causing appearance of unstable pole. The establishment of this feedback and elimination of unstable system pole by changing generator parameters is demonstrated on the example of the real distribution system of Leskovac branch with over 2500 nodes and more than 40 synchronous generators connected.","PeriodicalId":236996,"journal":{"name":"Energija, ekonomija, ekologija","volume":"229 8","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139019947","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

Cyber Physical Security of Distributed Energy Resources 分布式能源的网络物理安全

Energija, ekonomija, ekologija Pub Date : 2023-12-01 DOI: 10.46793/eee23-4.01s

Strezoski Luka, Babic Zorana, Milojicic Dejan

{"title":"Cyber Physical Security of Distributed Energy Resources","authors":"Strezoski Luka, Babic Zorana, Milojicic Dejan","doi":"10.46793/eee23-4.01s","DOIUrl":"https://doi.org/10.46793/eee23-4.01s","url":null,"abstract":"Huge amounts of data are coming from the electrical grid, through smart meters, smart inverters, and Supervisory Control and Data Acquisition (SCADA) protocols. This makes emerging power systems, and especially distribution grids, heavily dependent on real-time data from the field, as well as on the IT infrastructure for observation and control of field devices. As a consequence, emerging electrical systems are becoming fully digitized, cyber-physical systems with all the accompanying advantages and challenges. Such a power system is called a “Smart Grid”. As all cyber-physical systems, Smart Grids are heavily dependent on Information and Communication Technology (ICT) infrastructure. Therefore, they are highly vulnerable to attacks that can compromise uninterrupted data flow, such as denial of service attacks and interruptions due to natural disasters, cataclysmic events, or wars, as well as due to malicious cyber-attacks. In this paper, we summarize the state-of-the-art in the cyberphysical security of distributed energy resources (DERs). We explore pain points to which monitoring and control of DERs in emerging electrical systems are exposed due to malicious cyberattacks. We continue with analyzing the accompanying consequences to the safety and reliability of emerging Smart Grids. Finally, we present our idea of Digital Twin technology as a tool for assisting distribution system operators and grid engineers, to detect, attenuate, and prevent malicious cyberattacks in DERs.","PeriodicalId":236996,"journal":{"name":"Energija, ekonomija, ekologija","volume":"20 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139021489","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

Iskustva u izvođenju i eksploataciji fotonaponske elektrane instalisane snage 500 kW u fabrici „Gruner“ d.o.o-Vlasotince

Energija, ekonomija, ekologija Pub Date : 2022-12-01 DOI: 10.46793/eee22-4.57v

M. Vuković, Željko V. Despotović, B. Simonović

{"title":"Iskustva u izvođenju i eksploataciji fotonaponske elektrane instalisane snage 500 kW u fabrici „Gruner“ d.o.o-Vlasotince","authors":"M. Vuković, Željko V. Despotović, B. Simonović","doi":"10.46793/eee22-4.57v","DOIUrl":"https://doi.org/10.46793/eee22-4.57v","url":null,"abstract":"The main purpose of the solar photovoltaic power plant (SPVPP), with installed power of 500 kW on the roof of the factory GRUNER Serbian Ltd in Vlasotince, is to electrical supply of consumers in the factory. Considering the geometric dimensions of the roof and the daily and monthly profiles of electricity consumption in the factory, at the beginning of 2021, SPVPP was designed. In this way It is achieves parallel operation with the electricity distribution network, with the possibility of delivering surplus electrical energy. SPVPP was performed by the company CONSEKO Ltd., Belgrade in the period 15.0715.10.2021 and was put into trial operation at the end of September 2021, and the use permit of the plant for operation was issued on 30.12.2021. Since that date, SPVPP has been officially in exploitation operation. The GRUNER factory is on March 30, 2022 concluded with JP EPS, Branch \"EPS Snabdevanje\" concluded a contract for full supply of electricity for the period 01.04.2022 to 31.12.2023. The paper presents some key experiences from the construction and operation of PVPP, which could be interesting for both designers and implementers. The realization of PVPP has made a certain contribution to the promotion of renewable energy sources and the use of \"green\" energy in the territory of the Republic of Serbia.","PeriodicalId":236996,"journal":{"name":"Energija, ekonomija, ekologija","volume":"34 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126359145","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