Pub Date : 2020-10-14DOI: 10.1109/SST49455.2020.9264100
Marko Vukobratović, M. Hercog, Ivan Varga, Domagoj Vuković, Z. Klaić, D. Vranješ
The paper presents advanced computer and biologically inspired algorithms of modern meta-heuristics that can be actively used in Advanced Distribution Management Systems. By critical survey, emphasizing the advantages and identifying opportunities for improvement, the aim of this paper is to systematically and credibly show which principles the authors consider to be highly potential for application in industry. Although the actual number of papers by respected scientists is much higher and many good articles are unfairly neglected in this paper, within the space-time constraints an overview is given of those that will surely be of interest to professionals developing similar solutions. The authors hope that this article will serve as a good starting point for everyone willing to develop real advanced solutions that will improve the world of power industry.
{"title":"Survey of Methods for Advanced Distribution Management Systems","authors":"Marko Vukobratović, M. Hercog, Ivan Varga, Domagoj Vuković, Z. Klaić, D. Vranješ","doi":"10.1109/SST49455.2020.9264100","DOIUrl":"https://doi.org/10.1109/SST49455.2020.9264100","url":null,"abstract":"The paper presents advanced computer and biologically inspired algorithms of modern meta-heuristics that can be actively used in Advanced Distribution Management Systems. By critical survey, emphasizing the advantages and identifying opportunities for improvement, the aim of this paper is to systematically and credibly show which principles the authors consider to be highly potential for application in industry. Although the actual number of papers by respected scientists is much higher and many good articles are unfairly neglected in this paper, within the space-time constraints an overview is given of those that will surely be of interest to professionals developing similar solutions. The authors hope that this article will serve as a good starting point for everyone willing to develop real advanced solutions that will improve the world of power industry.","PeriodicalId":284895,"journal":{"name":"2020 International Conference on Smart Systems and Technologies (SST)","volume":"44 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-10-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124724459","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 : 2020-10-14DOI: 10.1109/sst49455.2020.9264058
{"title":"Wind energy integration in low inertia power system project special session: Smart transmission system for wide wind energy integration","authors":"","doi":"10.1109/sst49455.2020.9264058","DOIUrl":"https://doi.org/10.1109/sst49455.2020.9264058","url":null,"abstract":"","PeriodicalId":284895,"journal":{"name":"2020 International Conference on Smart Systems and Technologies (SST)","volume":"26 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-10-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115052176","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 : 2020-10-14DOI: 10.1109/SST49455.2020.9264106
D. Jukić, H. Glavaš, Željko Jeržek, Nikola Veić
Liquid Crystal Displays (LCDs) were tested by photometric means using two techniques: the usual one-point measuring technique and, more detailed, two-hundred-point technique proposed by the authors. Inspection of the LC units was conducted while test images (white, RGB and chess patterned black and white) were displayed, to analyze distribution of luminance more precisely. Results of analysis are qualitatively compared to proposed lightning level standards and recommendations to prolong the lifespan of the LCD unit is given.
{"title":"Photometric testing of a liquid crystal display","authors":"D. Jukić, H. Glavaš, Željko Jeržek, Nikola Veić","doi":"10.1109/SST49455.2020.9264106","DOIUrl":"https://doi.org/10.1109/SST49455.2020.9264106","url":null,"abstract":"Liquid Crystal Displays (LCDs) were tested by photometric means using two techniques: the usual one-point measuring technique and, more detailed, two-hundred-point technique proposed by the authors. Inspection of the LC units was conducted while test images (white, RGB and chess patterned black and white) were displayed, to analyze distribution of luminance more precisely. Results of analysis are qualitatively compared to proposed lightning level standards and recommendations to prolong the lifespan of the LCD unit is given.","PeriodicalId":284895,"journal":{"name":"2020 International Conference on Smart Systems and Technologies (SST)","volume":"3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-10-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121202503","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 : 2020-10-14DOI: 10.1109/SST49455.2020.9264129
Matej Žnidarec, D. Šljivac, Dario Dosen, Branka Nakomčić Smaragdakis
Goal of this paper is to provide performance analysis of photovoltaic based microgrid (PVMG). This is accomplished with energy management system (EMS) developed as Mixed Integer Linear Programming (MILP) problem evaluated on different case studies. Studied microgrid (MG) consists of PV system, load and battery storage system (BSS). Developed algorithm optimizes electricity flow in the MG by managing operational points of elements with the final goal of serving electricity demand at the lowest expense. Performance analysis of PVMG operation is performed for three study cases - passive consumer, prosumer and PVMG. Input data for the case studies represent 7 days of measurements of solar irradiance and ambient temperature for European humid-continental climate while load represents measurements of household electricity consumption in South-eastern Europe. Finally, sensitivity analysis of the impact of PV system array size and BSS capacity on operational profit of the PVMG operator (owner) for the scheduling horizon is carried out.
{"title":"Performance evaluation of simple PV microgrid energy management system","authors":"Matej Žnidarec, D. Šljivac, Dario Dosen, Branka Nakomčić Smaragdakis","doi":"10.1109/SST49455.2020.9264129","DOIUrl":"https://doi.org/10.1109/SST49455.2020.9264129","url":null,"abstract":"Goal of this paper is to provide performance analysis of photovoltaic based microgrid (PVMG). This is accomplished with energy management system (EMS) developed as Mixed Integer Linear Programming (MILP) problem evaluated on different case studies. Studied microgrid (MG) consists of PV system, load and battery storage system (BSS). Developed algorithm optimizes electricity flow in the MG by managing operational points of elements with the final goal of serving electricity demand at the lowest expense. Performance analysis of PVMG operation is performed for three study cases - passive consumer, prosumer and PVMG. Input data for the case studies represent 7 days of measurements of solar irradiance and ambient temperature for European humid-continental climate while load represents measurements of household electricity consumption in South-eastern Europe. Finally, sensitivity analysis of the impact of PV system array size and BSS capacity on operational profit of the PVMG operator (owner) for the scheduling horizon is carried out.","PeriodicalId":284895,"journal":{"name":"2020 International Conference on Smart Systems and Technologies (SST)","volume":"108 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-10-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126374932","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 : 2020-10-14DOI: 10.1109/SST49455.2020.9264082
Božidar Horvatović, R. Noskov, K. Fekete, Ana Androjić
In this paper operation of the microgrid with the wind power plant is simulated using PowerWorld Simulator. Microgrid with installed photovoltaic power plants (PV), biogas power plants (BPP), and wind power plants (WPP) is considered. Energy storage is not considered in this paper. Hourly operation of the microgrid during one day is simulated through different scenarios: parallel operation with the electricity grid, islanded operation of the microgrid, and voltage control with the WPP. Results are presented and discussed at the end of the paper.
{"title":"Operation of the Microgrid with Wind Power Plant: A Case Study","authors":"Božidar Horvatović, R. Noskov, K. Fekete, Ana Androjić","doi":"10.1109/SST49455.2020.9264082","DOIUrl":"https://doi.org/10.1109/SST49455.2020.9264082","url":null,"abstract":"In this paper operation of the microgrid with the wind power plant is simulated using PowerWorld Simulator. Microgrid with installed photovoltaic power plants (PV), biogas power plants (BPP), and wind power plants (WPP) is considered. Energy storage is not considered in this paper. Hourly operation of the microgrid during one day is simulated through different scenarios: parallel operation with the electricity grid, islanded operation of the microgrid, and voltage control with the WPP. Results are presented and discussed at the end of the paper.","PeriodicalId":284895,"journal":{"name":"2020 International Conference on Smart Systems and Technologies (SST)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-10-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130168944","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 : 2020-10-14DOI: 10.1109/SST49455.2020.9264034
Michal Kvet, K. Matiaško
Database management is currently an inevitable part of information technology. It requires data to be obtained in a fast, reliable, and consistent manner. Indexes are defined as an optional structure to improve Select statement performance. On the other hand, they cause additional demands, if data are changed, whereas such change must be reflected in the index, as well. This paper aims to discuss the auto-indexing methods provided by DBS Oracle, highlighting their limitations. We propose own techniques to remove the impact of peaks caused by adding new queries to the system, to which no suitable index is present. It is based on the block data analysis in the pointer layer.
{"title":"Analysis of current trends in relational database indexing","authors":"Michal Kvet, K. Matiaško","doi":"10.1109/SST49455.2020.9264034","DOIUrl":"https://doi.org/10.1109/SST49455.2020.9264034","url":null,"abstract":"Database management is currently an inevitable part of information technology. It requires data to be obtained in a fast, reliable, and consistent manner. Indexes are defined as an optional structure to improve Select statement performance. On the other hand, they cause additional demands, if data are changed, whereas such change must be reflected in the index, as well. This paper aims to discuss the auto-indexing methods provided by DBS Oracle, highlighting their limitations. We propose own techniques to remove the impact of peaks caused by adding new queries to the system, to which no suitable index is present. It is based on the block data analysis in the pointer layer.","PeriodicalId":284895,"journal":{"name":"2020 International Conference on Smart Systems and Technologies (SST)","volume":"105 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-10-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121366822","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 : 2020-10-14DOI: 10.1109/SST49455.2020.9264091
Jelena Vlaovic, J. Balen, K. Grgic, D. Zagar, V. Galić, D. Šimić
The process of photosynthesis implies the transformation of light into chemical energy in photosynthetic organisms. One of the procedures of utilizing the light reaching the plant leaf for chemical energy production is via the chlorophyll (CF) molecules that enable biochemical processes. Chlorophyll fluorescence measurement technique is used to assess the photosynthetic performance of plants and the main principle is based on light energy distribution. Although the plant physiological status is monitored and influenced with agricultural practices like crop rotation and fertilization, various deviations might happen in the agro-ecosphere. Fluorescence transient is monitored through different parameters like maximum fluorescence and different states of dark-adapted fluorescence are measured. Fluorescence is commonly measured using fluorometers like Pocket plant efficiency analyzer (PEA) and Handy PEA. Novel solutions include satellite observations and IoT solutions. Cost-efficient solutions based on a single sensor node provide less accuracy, while sensor networks acquire results comparable to reference data. This short review presents an overview of available sensors, methods and algorithms for measurements of chlorophyll fluorescence and identifies open issues and research directions for the future work.
{"title":"An Overview of Chlorophyll Fluorescence Measurement Process, Meters and Methods","authors":"Jelena Vlaovic, J. Balen, K. Grgic, D. Zagar, V. Galić, D. Šimić","doi":"10.1109/SST49455.2020.9264091","DOIUrl":"https://doi.org/10.1109/SST49455.2020.9264091","url":null,"abstract":"The process of photosynthesis implies the transformation of light into chemical energy in photosynthetic organisms. One of the procedures of utilizing the light reaching the plant leaf for chemical energy production is via the chlorophyll (CF) molecules that enable biochemical processes. Chlorophyll fluorescence measurement technique is used to assess the photosynthetic performance of plants and the main principle is based on light energy distribution. Although the plant physiological status is monitored and influenced with agricultural practices like crop rotation and fertilization, various deviations might happen in the agro-ecosphere. Fluorescence transient is monitored through different parameters like maximum fluorescence and different states of dark-adapted fluorescence are measured. Fluorescence is commonly measured using fluorometers like Pocket plant efficiency analyzer (PEA) and Handy PEA. Novel solutions include satellite observations and IoT solutions. Cost-efficient solutions based on a single sensor node provide less accuracy, while sensor networks acquire results comparable to reference data. This short review presents an overview of available sensors, methods and algorithms for measurements of chlorophyll fluorescence and identifies open issues and research directions for the future work.","PeriodicalId":284895,"journal":{"name":"2020 International Conference on Smart Systems and Technologies (SST)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-10-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134228838","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 : 2020-10-14DOI: 10.1109/sst49455.2020.9264270
{"title":"Smart Systems Modelling and Education","authors":"","doi":"10.1109/sst49455.2020.9264270","DOIUrl":"https://doi.org/10.1109/sst49455.2020.9264270","url":null,"abstract":"","PeriodicalId":284895,"journal":{"name":"2020 International Conference on Smart Systems and Technologies (SST)","volume":"8 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-10-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133775939","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 : 2020-10-14DOI: 10.1109/SST49455.2020.9263701
C. Pradhan, T. Gjengedal
This paper proposes an adaptive Jaya optimization algorithm (AJOA) scheme for optimizing the cascade PI-PD controller gains in Automatic Generation Control (AGC) of the power system to further enhance the load frequency control (LFC) performance. Jaya algorithm is a more recent and powerful heuristic search process. In spite of this, the original Jaya algorithm (OJA) may degrade its search performance by reason of the absence of algorithm-specific parameters. A maiden effort has been applied to consider an algorithm-specific variable (i.e., weight parameter) in the OJA for augmenting its search process towards the optimal result. The search performance of AJOA based on different unconstrained benchmark problems realized to be more appropriate than Particle swarm optimization (PSO), Gravity search algorithm (GSA), Ant lion optimization (ALO), and the original Jaya algorithm. Illustration of convergence characteristics of the above-mentioned algorithms, the AJOA is quite faster in contributing to the optimal solution and leading to a reduction in computational burden. In addition, the investigations reveal that AJOA with PI-PD cascaded controller suppressing the dynamics of the frequency oscillations in an interconnected two-area power system during the system events such as variations in parameters and load perturbations.
{"title":"Adaptive Jaya Algorithm for Optimized PI-PD Cascade Controller of Load Frequency Control in Interconnected Two-Area Power System","authors":"C. Pradhan, T. Gjengedal","doi":"10.1109/SST49455.2020.9263701","DOIUrl":"https://doi.org/10.1109/SST49455.2020.9263701","url":null,"abstract":"This paper proposes an adaptive Jaya optimization algorithm (AJOA) scheme for optimizing the cascade PI-PD controller gains in Automatic Generation Control (AGC) of the power system to further enhance the load frequency control (LFC) performance. Jaya algorithm is a more recent and powerful heuristic search process. In spite of this, the original Jaya algorithm (OJA) may degrade its search performance by reason of the absence of algorithm-specific parameters. A maiden effort has been applied to consider an algorithm-specific variable (i.e., weight parameter) in the OJA for augmenting its search process towards the optimal result. The search performance of AJOA based on different unconstrained benchmark problems realized to be more appropriate than Particle swarm optimization (PSO), Gravity search algorithm (GSA), Ant lion optimization (ALO), and the original Jaya algorithm. Illustration of convergence characteristics of the above-mentioned algorithms, the AJOA is quite faster in contributing to the optimal solution and leading to a reduction in computational burden. In addition, the investigations reveal that AJOA with PI-PD cascaded controller suppressing the dynamics of the frequency oscillations in an interconnected two-area power system during the system events such as variations in parameters and load perturbations.","PeriodicalId":284895,"journal":{"name":"2020 International Conference on Smart Systems and Technologies (SST)","volume":"43 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-10-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130312355","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 : 2020-10-14DOI: 10.1109/SST49455.2020.9264128
Andrej Brandis, D. Pelin, D. Topić, Matej Žnidarec
A smart-scaled photovoltaic and fuel cell didactic equipment is presented as a practical higher education tools for learning about these Alternative Energy Sources. This didactic equipment is used at the Faculty of Electrical Engineering, Computer Science and Information Technology Osijek (FERIT), Croatia as a part of a curriculum in the course Applied Power Electronics. The didactic equipment is described, and selected laboratory exercise experiments are presented. A few topic examples, with which the students are dealing at the exercises are given. Furthermore, student's knowledge evaluation has been done in the terms of conducted knowledge tests before and after performed laboratory exercises. Finally, the result of the student's survey is presented.
{"title":"Smart-scaled RES Equipment as a Practical Tool for Teaching Students","authors":"Andrej Brandis, D. Pelin, D. Topić, Matej Žnidarec","doi":"10.1109/SST49455.2020.9264128","DOIUrl":"https://doi.org/10.1109/SST49455.2020.9264128","url":null,"abstract":"A smart-scaled photovoltaic and fuel cell didactic equipment is presented as a practical higher education tools for learning about these Alternative Energy Sources. This didactic equipment is used at the Faculty of Electrical Engineering, Computer Science and Information Technology Osijek (FERIT), Croatia as a part of a curriculum in the course Applied Power Electronics. The didactic equipment is described, and selected laboratory exercise experiments are presented. A few topic examples, with which the students are dealing at the exercises are given. Furthermore, student's knowledge evaluation has been done in the terms of conducted knowledge tests before and after performed laboratory exercises. Finally, the result of the student's survey is presented.","PeriodicalId":284895,"journal":{"name":"2020 International Conference on Smart Systems and Technologies (SST)","volume":"21 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-10-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115472632","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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