Pub Date : 2023-04-24DOI: 10.1109/SMAGRIMET58412.2023.10128690
G. Frigo, Federica Costa
Renewable energy sources are typically operated in DC. Their interconnection to the AC grid relies on dedicated inverters that pose several challenges in terms of lower inertia and poorer power quality. In order to avoid these challenges, low-voltage DC grids may represent a promising solution for small grid portions with controlled power flows. To fill the standardization gaps, the paper discusses the suitable definition of DC power in distorted conditions and evaluates the possible measurement errors due to real-world disturbances.
{"title":"DC Power Metering in Low-Voltage Microgrids: Definitional and Methodological Issues","authors":"G. Frigo, Federica Costa","doi":"10.1109/SMAGRIMET58412.2023.10128690","DOIUrl":"https://doi.org/10.1109/SMAGRIMET58412.2023.10128690","url":null,"abstract":"Renewable energy sources are typically operated in DC. Their interconnection to the AC grid relies on dedicated inverters that pose several challenges in terms of lower inertia and poorer power quality. In order to avoid these challenges, low-voltage DC grids may represent a promising solution for small grid portions with controlled power flows. To fill the standardization gaps, the paper discusses the suitable definition of DC power in distorted conditions and evaluates the possible measurement errors due to real-world disturbances.","PeriodicalId":286515,"journal":{"name":"2023 4th International Conference on Smart Grid Metrology (SMAGRIMET)","volume":"98 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-04-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115793905","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}
Pub Date : 2023-04-24DOI: 10.1109/SMAGRIMET58412.2023.10128664
Igor Štambuk, J. Konjevod, R. Malarić
Low-cost metrology paradigm implies investigation of possible applications of low-cost measurement devices in order to achieve satisfactorily precision of relevant measurement quantities. This is especially important in the underdeveloped countries where it is needed to advance their metrology capabilities in order to ensure satisfactorily standards for industry requirements. Thus, we investigated the performances of low-cost sampling devices for the purpose of high-precision electrical power measurement in relevant national metrology institutes or measurement laboratories.
{"title":"Investigation of the low-cost sampling devices for the purpose of high-precision electric power measurement","authors":"Igor Štambuk, J. Konjevod, R. Malarić","doi":"10.1109/SMAGRIMET58412.2023.10128664","DOIUrl":"https://doi.org/10.1109/SMAGRIMET58412.2023.10128664","url":null,"abstract":"Low-cost metrology paradigm implies investigation of possible applications of low-cost measurement devices in order to achieve satisfactorily precision of relevant measurement quantities. This is especially important in the underdeveloped countries where it is needed to advance their metrology capabilities in order to ensure satisfactorily standards for industry requirements. Thus, we investigated the performances of low-cost sampling devices for the purpose of high-precision electrical power measurement in relevant national metrology institutes or measurement laboratories.","PeriodicalId":286515,"journal":{"name":"2023 4th International Conference on Smart Grid Metrology (SMAGRIMET)","volume":"57 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-04-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124661622","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}
Pub Date : 2023-04-24DOI: 10.1109/SMAGRIMET58412.2023.10128687
M. Čuljak, J. Havelka, H. Pandžić
Active involvement of residential consumers in smart home initiatives is a key for realization of the smart grid. In this framework, the active customers are subject to demand response programs used to efficiently reduce the amount and timing of electricity consumption. The main requirements for residential demand response programs are acquiring real-time electricity consumption data and load profiles of residential appliances. Development of communication technologies and smart load monitoring applications has simplified the access to this information. This paper investigates and describes the design of a developed data acquisition and monitoring system for demand response implementation in the residential sector. Our smart monitoring system integrates a number of residential electric appliances to study their daily energy consumption profiles and, in the future, forecasts their potential demand response capacity. We describe the design of a LabView application for acquiring, logging, processing and visualizing data derived from the Demand Response Laboratory (DR Lab) at the University of Zagreb Faculty of Electrical Engineering and Computing (UNIZG-FER). The monitoring system is implemented in a way that enables an-cillary service provisioning and participation in demand response programs.
{"title":"Development of a LabVIEW-Based Data Acquisition and Monitoring System for Demand Response Laboratory","authors":"M. Čuljak, J. Havelka, H. Pandžić","doi":"10.1109/SMAGRIMET58412.2023.10128687","DOIUrl":"https://doi.org/10.1109/SMAGRIMET58412.2023.10128687","url":null,"abstract":"Active involvement of residential consumers in smart home initiatives is a key for realization of the smart grid. In this framework, the active customers are subject to demand response programs used to efficiently reduce the amount and timing of electricity consumption. The main requirements for residential demand response programs are acquiring real-time electricity consumption data and load profiles of residential appliances. Development of communication technologies and smart load monitoring applications has simplified the access to this information. This paper investigates and describes the design of a developed data acquisition and monitoring system for demand response implementation in the residential sector. Our smart monitoring system integrates a number of residential electric appliances to study their daily energy consumption profiles and, in the future, forecasts their potential demand response capacity. We describe the design of a LabView application for acquiring, logging, processing and visualizing data derived from the Demand Response Laboratory (DR Lab) at the University of Zagreb Faculty of Electrical Engineering and Computing (UNIZG-FER). The monitoring system is implemented in a way that enables an-cillary service provisioning and participation in demand response programs.","PeriodicalId":286515,"journal":{"name":"2023 4th International Conference on Smart Grid Metrology (SMAGRIMET)","volume":"15 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-04-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129320951","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}
Pub Date : 2023-04-24DOI: 10.1109/SMAGRIMET58412.2023.10128663
Karla Natalli Vujević, M. Despalatović, A. Šunjerga, G. Petrovic
Synchrophasor measurement plays a critical role in improving the efficiency, reliability and security of distribution grids. The use of synchrophasors allows for advanced monitoring, control and protection of the distribution grid, providing valuable information for decision-making in real-time. In this paper, we present a simple framework based on open-source codes that can convert a typical laboratory oscilloscope to a synchrophasors logger with minimum investment and use devices commonly available in electrical engineering laboratories. We use simple algorithms to extract electrical quantities of interest and log them to a highly efficient time-series database. Post-processing and data analysis can be done for the active and reactive power of each individual harmonic and can be done by accessing the database remotely from any location connected to the internet.
{"title":"Synchrophasor Logger Based on Laboratory Oscilloscope and Raspberry Pi","authors":"Karla Natalli Vujević, M. Despalatović, A. Šunjerga, G. Petrovic","doi":"10.1109/SMAGRIMET58412.2023.10128663","DOIUrl":"https://doi.org/10.1109/SMAGRIMET58412.2023.10128663","url":null,"abstract":"Synchrophasor measurement plays a critical role in improving the efficiency, reliability and security of distribution grids. The use of synchrophasors allows for advanced monitoring, control and protection of the distribution grid, providing valuable information for decision-making in real-time. In this paper, we present a simple framework based on open-source codes that can convert a typical laboratory oscilloscope to a synchrophasors logger with minimum investment and use devices commonly available in electrical engineering laboratories. We use simple algorithms to extract electrical quantities of interest and log them to a highly efficient time-series database. Post-processing and data analysis can be done for the active and reactive power of each individual harmonic and can be done by accessing the database remotely from any location connected to the internet.","PeriodicalId":286515,"journal":{"name":"2023 4th International Conference on Smart Grid Metrology (SMAGRIMET)","volume":"136 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-04-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122164917","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}
Pub Date : 2023-04-24DOI: 10.1109/SMAGRIMET58412.2023.10128654
Federica Costa, G. Frigo
The ever-increasing installation of renewable energy sources is rapidly transforming the aspect of modern power grids, especially at distribution level where the presence of photovoltaic power plants and battery storage systems is significant. Phasor Measurement Units (PMUs) are well-known devices that are proven to be particularly effective in this context. However, it is more and more essential to assess the reliability of these measurements, especially in low-inertia and transient conditions. Therefore, this paper presents a study on the feasibility of aggregating PMU-based measurements performed in different nodes of a distribution grid. The results indicate the significance of evaluating such quantity for correct control at a local level, mainly where an extensive installation of renewables is present.
{"title":"Local Aggregation of PMU Measurements in a Low-Inertia Distribution Power System","authors":"Federica Costa, G. Frigo","doi":"10.1109/SMAGRIMET58412.2023.10128654","DOIUrl":"https://doi.org/10.1109/SMAGRIMET58412.2023.10128654","url":null,"abstract":"The ever-increasing installation of renewable energy sources is rapidly transforming the aspect of modern power grids, especially at distribution level where the presence of photovoltaic power plants and battery storage systems is significant. Phasor Measurement Units (PMUs) are well-known devices that are proven to be particularly effective in this context. However, it is more and more essential to assess the reliability of these measurements, especially in low-inertia and transient conditions. Therefore, this paper presents a study on the feasibility of aggregating PMU-based measurements performed in different nodes of a distribution grid. The results indicate the significance of evaluating such quantity for correct control at a local level, mainly where an extensive installation of renewables is present.","PeriodicalId":286515,"journal":{"name":"2023 4th International Conference on Smart Grid Metrology (SMAGRIMET)","volume":"4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-04-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117001550","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}
Pub Date : 2023-04-24DOI: 10.1109/SMAGRIMET58412.2023.10128666
Katarina Musulin, B. Filipović-Grčić, V. Milardić, Mario Jurić, Robert Teči, B. Jurišić
The transient enclosure voltage rise (TEVR) in GIS is caused by very fast overvoltages that occur inside the enclosure during the switching operation, mainly during disconnector operations. TEVR is caused by very high frequency overvoltages (the order of MHz), for which even small inductance of earthing leads can represent significant impedance. The level of TEVR strongly depends on design and length of the earthing leads. Therefore, overvoltage measurements were performed for different earthing leads configurations in 110 kV GIS and results are presented in this paper. The earthing leads configurations were first verified by simulation in the EMTP program.
{"title":"Measurements and Simulations of Very Fast Transients at the Connection of High Voltage Cable with Gas Insulated Metal Enclosed Switchgear","authors":"Katarina Musulin, B. Filipović-Grčić, V. Milardić, Mario Jurić, Robert Teči, B. Jurišić","doi":"10.1109/SMAGRIMET58412.2023.10128666","DOIUrl":"https://doi.org/10.1109/SMAGRIMET58412.2023.10128666","url":null,"abstract":"The transient enclosure voltage rise (TEVR) in GIS is caused by very fast overvoltages that occur inside the enclosure during the switching operation, mainly during disconnector operations. TEVR is caused by very high frequency overvoltages (the order of MHz), for which even small inductance of earthing leads can represent significant impedance. The level of TEVR strongly depends on design and length of the earthing leads. Therefore, overvoltage measurements were performed for different earthing leads configurations in 110 kV GIS and results are presented in this paper. The earthing leads configurations were first verified by simulation in the EMTP program.","PeriodicalId":286515,"journal":{"name":"2023 4th International Conference on Smart Grid Metrology (SMAGRIMET)","volume":"3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-04-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131867058","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}
Pub Date : 2023-04-24DOI: 10.1109/SMAGRIMET58412.2023.10128665
J. Balen, Marin Matijašević, Lovro Pejčić, J. Kundid, Muhammad Moazam Azeem
An emerging vehicular ad hoc network (VANET) is a network of connected vehicles which are communicating with each other and with roadside units (RSUs) exchanging useful information. As a result, road safety is increased, and complex traffic management is enabled. However, we are moving one step further and proposing the usage of vehicle resources, such as computing capabilities and data storage, for enabling vehicular clouds which can efficiently support smart transportation infrastructure. The main goal for establishing vehicular clouds is utilization of vast amounts of unused hardware resources available at vehicles for enabling and supporting smart transportation infrastructure. Vehicular clouds can enable additional distributed computing and storage resources to various groups of users, as well as introduce new use cases and applications. Recent vehicular cloud computing methods and models, as well as vehicular cloud computing architecture and services are explored in this paper. Based on the research and our work a new vehicular cloud computing architecture VANET-CC is proposed and elaborated. Furthermore, possible services for cloud computing are pointed out together with vehicle management in such clouds.
{"title":"Integrating Vehicular Clouds For Supporting Smart Transportation Infrastructure","authors":"J. Balen, Marin Matijašević, Lovro Pejčić, J. Kundid, Muhammad Moazam Azeem","doi":"10.1109/SMAGRIMET58412.2023.10128665","DOIUrl":"https://doi.org/10.1109/SMAGRIMET58412.2023.10128665","url":null,"abstract":"An emerging vehicular ad hoc network (VANET) is a network of connected vehicles which are communicating with each other and with roadside units (RSUs) exchanging useful information. As a result, road safety is increased, and complex traffic management is enabled. However, we are moving one step further and proposing the usage of vehicle resources, such as computing capabilities and data storage, for enabling vehicular clouds which can efficiently support smart transportation infrastructure. The main goal for establishing vehicular clouds is utilization of vast amounts of unused hardware resources available at vehicles for enabling and supporting smart transportation infrastructure. Vehicular clouds can enable additional distributed computing and storage resources to various groups of users, as well as introduce new use cases and applications. Recent vehicular cloud computing methods and models, as well as vehicular cloud computing architecture and services are explored in this paper. Based on the research and our work a new vehicular cloud computing architecture VANET-CC is proposed and elaborated. Furthermore, possible services for cloud computing are pointed out together with vehicle management in such clouds.","PeriodicalId":286515,"journal":{"name":"2023 4th International Conference on Smart Grid Metrology (SMAGRIMET)","volume":"64 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-04-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125606677","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}
Pub Date : 2023-04-24DOI: 10.1109/SMAGRIMET58412.2023.10128689
Adriano Dorer, Filip Razum, T. Zupan, Z. Janic, J. Konjevod
A number of factories are carrying out the ongoing process of digitalization and automatization of their numerous processes in the interest of speeding up the overall process, reducing the error rate or increasing productivity and/or quality. One of the main components of a power transformer is its core, which is made of thin stacked sheets of steel. Due to the complexity of the manufacturing process and the dimensions of sheets and the overall core, the whole stacking process needs to be precise and have relatively low tolerances. All of this dictates a relatively big number of control parameters and measurements during the core manufacturing. Therefore, it is of importance to devise the methodology and smart devices that can speed up the measurements and help in increasing the measurement quality and worker safety. This paper presents such an approach, by showing custom-built devices for that purpose, together with the accompanying software.
{"title":"Smart Devices Applicable in Transformer Core Manufacturing","authors":"Adriano Dorer, Filip Razum, T. Zupan, Z. Janic, J. Konjevod","doi":"10.1109/SMAGRIMET58412.2023.10128689","DOIUrl":"https://doi.org/10.1109/SMAGRIMET58412.2023.10128689","url":null,"abstract":"A number of factories are carrying out the ongoing process of digitalization and automatization of their numerous processes in the interest of speeding up the overall process, reducing the error rate or increasing productivity and/or quality. One of the main components of a power transformer is its core, which is made of thin stacked sheets of steel. Due to the complexity of the manufacturing process and the dimensions of sheets and the overall core, the whole stacking process needs to be precise and have relatively low tolerances. All of this dictates a relatively big number of control parameters and measurements during the core manufacturing. Therefore, it is of importance to devise the methodology and smart devices that can speed up the measurements and help in increasing the measurement quality and worker safety. This paper presents such an approach, by showing custom-built devices for that purpose, together with the accompanying software.","PeriodicalId":286515,"journal":{"name":"2023 4th International Conference on Smart Grid Metrology (SMAGRIMET)","volume":"21 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-04-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125276928","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}
Pub Date : 2023-04-24DOI: 10.1109/SMAGRIMET58412.2023.10128658
Mario Filipasic, M. Dadić
This paper presents an optimized shielded magnetic field probe in printed circuit board (PCB) technology, with improved sensitivity in the frequency band up to 3 GHz. The probe is simulated using finite element method (FEM) and is optimized using particle swarm optimization (PSO). The PSO algorithm finds the best fitting value for the probe dimensions with a condition on maximum sensitivity in the analyzed frequency band. A simulation and measurement setup for determining probe sensitivity with a microstrip line is presented. The proposed probe sensitivity is compared to a conventional probe. The measured results show an average sensitivity increase of 7 dB compared to the conventional probe.
{"title":"A Shielded PCB Probe Optimized for Magnetic Near Field Measurements below 3 GHz","authors":"Mario Filipasic, M. Dadić","doi":"10.1109/SMAGRIMET58412.2023.10128658","DOIUrl":"https://doi.org/10.1109/SMAGRIMET58412.2023.10128658","url":null,"abstract":"This paper presents an optimized shielded magnetic field probe in printed circuit board (PCB) technology, with improved sensitivity in the frequency band up to 3 GHz. The probe is simulated using finite element method (FEM) and is optimized using particle swarm optimization (PSO). The PSO algorithm finds the best fitting value for the probe dimensions with a condition on maximum sensitivity in the analyzed frequency band. A simulation and measurement setup for determining probe sensitivity with a microstrip line is presented. The proposed probe sensitivity is compared to a conventional probe. The measured results show an average sensitivity increase of 7 dB compared to the conventional probe.","PeriodicalId":286515,"journal":{"name":"2023 4th International Conference on Smart Grid Metrology (SMAGRIMET)","volume":"31 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-04-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123799998","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}
Pub Date : 2023-04-24DOI: 10.1109/SMAGRIMET58412.2023.10128659
K. Malaric, B. Šaravanja, T. Pušić
In our paper the microwave radiation protective suit with silver threads as a conductive material is described. The suit is made from material made by Cateks d.d. according to our design. Materials was tested for shielding effectiveness on frequencies from 1 GHz to 6 GHz.
{"title":"Microwave Radiation Protective Suit with Silver Threads","authors":"K. Malaric, B. Šaravanja, T. Pušić","doi":"10.1109/SMAGRIMET58412.2023.10128659","DOIUrl":"https://doi.org/10.1109/SMAGRIMET58412.2023.10128659","url":null,"abstract":"In our paper the microwave radiation protective suit with silver threads as a conductive material is described. The suit is made from material made by Cateks d.d. according to our design. Materials was tested for shielding effectiveness on frequencies from 1 GHz to 6 GHz.","PeriodicalId":286515,"journal":{"name":"2023 4th International Conference on Smart Grid Metrology (SMAGRIMET)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-04-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130569546","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}
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