Pub Date : 2017-05-17DOI: 10.1109/EPE.2017.7967271
S. Czapp, Seweryn Szultka, A. Tomaszewski
Evaluation of current-carrying capacity of power cables and selection of cross-sectional area of their conductors are mainly performed in accordance with requirements of EN, IEC or IEEE standards. However, these standards do not provide all methods of cables installation and location which occur in practice. Thus, in some cases, performance of advanced modeling of various thermal phenomena, affecting power cables current-carrying capacity, is necessary. This paper presents the impact of solar radiation, wind direction and power cable line geographical direction on current-carrying capacity of power cables. The advanced computational fluid dynamics (CFD) simulations have been employed to calculate this capacity. Results of simulations and calculations indicate that the above mentioned factors cannot be omitted during selection of power cables to be installed in free air. The result presented in this paper can be treated as supplementary information to the requirements included in international standards.
{"title":"CFD-based evaluation of current-carrying capacity of power cables installed in free air","authors":"S. Czapp, Seweryn Szultka, A. Tomaszewski","doi":"10.1109/EPE.2017.7967271","DOIUrl":"https://doi.org/10.1109/EPE.2017.7967271","url":null,"abstract":"Evaluation of current-carrying capacity of power cables and selection of cross-sectional area of their conductors are mainly performed in accordance with requirements of EN, IEC or IEEE standards. However, these standards do not provide all methods of cables installation and location which occur in practice. Thus, in some cases, performance of advanced modeling of various thermal phenomena, affecting power cables current-carrying capacity, is necessary. This paper presents the impact of solar radiation, wind direction and power cable line geographical direction on current-carrying capacity of power cables. The advanced computational fluid dynamics (CFD) simulations have been employed to calculate this capacity. Results of simulations and calculations indicate that the above mentioned factors cannot be omitted during selection of power cables to be installed in free air. The result presented in this paper can be treated as supplementary information to the requirements included in international standards.","PeriodicalId":201464,"journal":{"name":"2017 18th International Scientific Conference on Electric Power Engineering (EPE)","volume":"22 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-05-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121170904","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 : 2017-05-17DOI: 10.1109/EPE.2017.7967237
O. Kudrjavtsev, T. Vaimann, A. Kilk, A. Kallaste
This paper describes the design and prototyping process of outer rotor permanent magnet generator meant for the use in small scale wind turbines. The initial design of the machine is presented. Main issues and phenomena, affecting the generator design, such as cogging torque and its reduction possibilities, selection and demagnetization risk assessment of permanent magnets, machine losses and thermal analysis is described. Test results of constructed prototype generator and final parameters are also presented. Necessity of further study is pointed out.
{"title":"Design and prototyping of outer rotor permanent magnet generator for small scale wind turbines","authors":"O. Kudrjavtsev, T. Vaimann, A. Kilk, A. Kallaste","doi":"10.1109/EPE.2017.7967237","DOIUrl":"https://doi.org/10.1109/EPE.2017.7967237","url":null,"abstract":"This paper describes the design and prototyping process of outer rotor permanent magnet generator meant for the use in small scale wind turbines. The initial design of the machine is presented. Main issues and phenomena, affecting the generator design, such as cogging torque and its reduction possibilities, selection and demagnetization risk assessment of permanent magnets, machine losses and thermal analysis is described. Test results of constructed prototype generator and final parameters are also presented. Necessity of further study is pointed out.","PeriodicalId":201464,"journal":{"name":"2017 18th International Scientific Conference on Electric Power Engineering (EPE)","volume":"2015 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-05-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128047409","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 : 2017-05-17DOI: 10.1109/EPE.2017.7967234
M. Pająk
Technical systems which operate in the power industry are the critical systems of strategic importance. In case of such systems the task consisting in the avoidance of the failure occurrence has an extraordinary significance. The failure occurrence is interpreted as the transition of the system technical state from the area of the ability states to the area of the inability states. Therefore, the identification of the system technical state and determination their ability and inability states areas are the fundamental elements of the rational control of the power industry systems operation and maintenance. The technical state of the system is described by momentary values of its cardinal features. Simultaneously, in case of the complex system where the elements are connected by many multidimensional relationships, it is not obvious to qualify the technical state of a system as the ability state or the inability one. What is more, only the approximated momentary and boundary values of the system features are known. Thus, in the paper, the fuzzy space of the technical states of the system is introduced. In the space the technical state is expressed in a form of the multidimensional fuzzy set and the areas of the ability and inability states are transformed into the fuzzy subspaces. The proposed approach make possible to describe the considered operation and maintenance problem in the analytical manner. Thanks to it, the ability of the system to fulfil its operation tasks can be calculated and analysed. In the end of the paper, the industrial implementation of the proposed method is described. During the carried out research the OP-650k-040 steam boiler was examined. As a results of the studies the adequacy of the method in case of the power industry complex systems was proved.
{"title":"Modelling of the operation and maintenance tasks of a complex power industry system in the fuzzy technical states space","authors":"M. Pająk","doi":"10.1109/EPE.2017.7967234","DOIUrl":"https://doi.org/10.1109/EPE.2017.7967234","url":null,"abstract":"Technical systems which operate in the power industry are the critical systems of strategic importance. In case of such systems the task consisting in the avoidance of the failure occurrence has an extraordinary significance. The failure occurrence is interpreted as the transition of the system technical state from the area of the ability states to the area of the inability states. Therefore, the identification of the system technical state and determination their ability and inability states areas are the fundamental elements of the rational control of the power industry systems operation and maintenance. The technical state of the system is described by momentary values of its cardinal features. Simultaneously, in case of the complex system where the elements are connected by many multidimensional relationships, it is not obvious to qualify the technical state of a system as the ability state or the inability one. What is more, only the approximated momentary and boundary values of the system features are known. Thus, in the paper, the fuzzy space of the technical states of the system is introduced. In the space the technical state is expressed in a form of the multidimensional fuzzy set and the areas of the ability and inability states are transformed into the fuzzy subspaces. The proposed approach make possible to describe the considered operation and maintenance problem in the analytical manner. Thanks to it, the ability of the system to fulfil its operation tasks can be calculated and analysed. In the end of the paper, the industrial implementation of the proposed method is described. During the carried out research the OP-650k-040 steam boiler was examined. As a results of the studies the adequacy of the method in case of the power industry complex systems was proved.","PeriodicalId":201464,"journal":{"name":"2017 18th International Scientific Conference on Electric Power Engineering (EPE)","volume":"13 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-05-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121184889","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 : 2017-05-17DOI: 10.1109/EPE.2017.7967233
Junho Yu, Inwoo Hwang, Namsoo Kim
This paper presents a dual-mode CMOS integrated DC-DC buck converter for portable application. The proposed dual-mode buck converter is designed to be controlled by PFM (pulse frequency modulation) and PWM (pulse width modulation) modes. The converter for the application of wide current range and high power efficiency is used to generate the voltage of 0.5–3.0 V with the battery source of 3.3–5.0 V which has the load current range of 30–200 mA. PFM control is applied to obtain high power efficiency when the load-current is low under 50 mA, while PWM is designed to be operated in the higher range of load-current. A ring-type VCO (voltage-controlled oscillator) is used in PFM circuit and provides a variable frequency to correspond to the output current. In PWM control circuit, the combination of sensing current and ramp signal are applied in feedback circuit of converter. The proposed dual-mode DC-DC buck converter is integrated with 0.18 μm CMOS process. Simulation result shows that the converter provides the well-regulated line and load regulations with power efficiency of 80–90%.
{"title":"High performance CMOS integrated PWM/PFM dual-mode DC-DC buck converter","authors":"Junho Yu, Inwoo Hwang, Namsoo Kim","doi":"10.1109/EPE.2017.7967233","DOIUrl":"https://doi.org/10.1109/EPE.2017.7967233","url":null,"abstract":"This paper presents a dual-mode CMOS integrated DC-DC buck converter for portable application. The proposed dual-mode buck converter is designed to be controlled by PFM (pulse frequency modulation) and PWM (pulse width modulation) modes. The converter for the application of wide current range and high power efficiency is used to generate the voltage of 0.5–3.0 V with the battery source of 3.3–5.0 V which has the load current range of 30–200 mA. PFM control is applied to obtain high power efficiency when the load-current is low under 50 mA, while PWM is designed to be operated in the higher range of load-current. A ring-type VCO (voltage-controlled oscillator) is used in PFM circuit and provides a variable frequency to correspond to the output current. In PWM control circuit, the combination of sensing current and ramp signal are applied in feedback circuit of converter. The proposed dual-mode DC-DC buck converter is integrated with 0.18 μm CMOS process. Simulation result shows that the converter provides the well-regulated line and load regulations with power efficiency of 80–90%.","PeriodicalId":201464,"journal":{"name":"2017 18th International Scientific Conference on Electric Power Engineering (EPE)","volume":"123 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-05-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123759338","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 : 2017-05-17DOI: 10.1109/EPE.2017.7967337
L. Setlak, R. Kowalik
The paper presents mathematical models of the key components onboard autonomous power supply system (ASE) plane "conventional" and more electric aircraft MEA "More Electric Aircraft". The subject, and also the aim of this work is the analysis and simulation of selected components of the power system of modern aircraft (synchronous generator, integrated starter/generator, voltage regulator, as device control and regulation of the generator and power electronic rectifiers multi-pulse). Simulation tests of key components confirmed the results obtained by the analytical and based on their mathematical models. The final part of the paper presents the main conclusions of the analysis and simulation based on the mathematical models of the selected components of the ASE system in accordance with the concept of a more electric aircraft.
{"title":"Mathematical modeling and simulation of selected components on-board autonomous power supply system (ASE), in accordance with the concept of a more electric aircraft (MEA)","authors":"L. Setlak, R. Kowalik","doi":"10.1109/EPE.2017.7967337","DOIUrl":"https://doi.org/10.1109/EPE.2017.7967337","url":null,"abstract":"The paper presents mathematical models of the key components onboard autonomous power supply system (ASE) plane \"conventional\" and more electric aircraft MEA \"More Electric Aircraft\". The subject, and also the aim of this work is the analysis and simulation of selected components of the power system of modern aircraft (synchronous generator, integrated starter/generator, voltage regulator, as device control and regulation of the generator and power electronic rectifiers multi-pulse). Simulation tests of key components confirmed the results obtained by the analytical and based on their mathematical models. The final part of the paper presents the main conclusions of the analysis and simulation based on the mathematical models of the selected components of the ASE system in accordance with the concept of a more electric aircraft.","PeriodicalId":201464,"journal":{"name":"2017 18th International Scientific Conference on Electric Power Engineering (EPE)","volume":"14 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-05-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125755687","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 : 2017-05-17DOI: 10.1109/EPE.2017.7967362
R. Goňo
Paper deals with the analyses of electrical power network reliability parameters connected to maintenance. Knowledge of the component reliability parameters in power networks is necessary for the reliability computation and also for reliability-centered maintenance system. Component reliability parameters are possible to retrieve only with accurate databases of distribution companies. Such a database includes records of outages and interruptions in power networks. Maintenance influence the indicators evaluating interruptions — maintenance time in fact means unavailability. There are analyses of interruption indicators improvement, modern techniques like Live Working and Reliability Centered Maintenance in this paper.
{"title":"Reliability and maintenance of electrical power system: Invited lecture","authors":"R. Goňo","doi":"10.1109/EPE.2017.7967362","DOIUrl":"https://doi.org/10.1109/EPE.2017.7967362","url":null,"abstract":"Paper deals with the analyses of electrical power network reliability parameters connected to maintenance. Knowledge of the component reliability parameters in power networks is necessary for the reliability computation and also for reliability-centered maintenance system. Component reliability parameters are possible to retrieve only with accurate databases of distribution companies. Such a database includes records of outages and interruptions in power networks. Maintenance influence the indicators evaluating interruptions — maintenance time in fact means unavailability. There are analyses of interruption indicators improvement, modern techniques like Live Working and Reliability Centered Maintenance in this paper.","PeriodicalId":201464,"journal":{"name":"2017 18th International Scientific Conference on Electric Power Engineering (EPE)","volume":"29 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-05-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129620738","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 : 2017-05-17DOI: 10.1109/EPE.2017.7967230
M. Siavash, C. Pfeifer, A. Rahiminejad, B. Vahidi
In this paper, the problem of optimal power flow (OPF) is solved in a system integrated with wind farms with the aim of reducing the cost of power production and the reduction of power grid loss by applying the Grey Wolf Optimization (GWO) Algorithm. The variable nature of wind farm output is modeled using two additional cost components corresponding to the states of under estimation and over estimation, where the available power is higher and lower than the scheduled output, respectively. On one side, in the case where there is lower power regards to the planned power, a penalty is added to the cost function. On the other side, if the produced power would be more than the planned power, an additional cost would be added to the cost function because of not buying the overall power of the wind farms. A recently introduced optimization method known as Grey Wolf Optimization Algorithm is employed in this article. The problem of OPF based on proposed approach has been applied on a modified version of IEEE 30-bus test system. The results of this study are compared with the results of Genetic Algorithm (GA). The results show the superiority of the proposed method, both in the convergence speed as well as the final result comparing to other method.
{"title":"An application of grey wolf optimizer for optimal power flow of wind integrated power systems","authors":"M. Siavash, C. Pfeifer, A. Rahiminejad, B. Vahidi","doi":"10.1109/EPE.2017.7967230","DOIUrl":"https://doi.org/10.1109/EPE.2017.7967230","url":null,"abstract":"In this paper, the problem of optimal power flow (OPF) is solved in a system integrated with wind farms with the aim of reducing the cost of power production and the reduction of power grid loss by applying the Grey Wolf Optimization (GWO) Algorithm. The variable nature of wind farm output is modeled using two additional cost components corresponding to the states of under estimation and over estimation, where the available power is higher and lower than the scheduled output, respectively. On one side, in the case where there is lower power regards to the planned power, a penalty is added to the cost function. On the other side, if the produced power would be more than the planned power, an additional cost would be added to the cost function because of not buying the overall power of the wind farms. A recently introduced optimization method known as Grey Wolf Optimization Algorithm is employed in this article. The problem of OPF based on proposed approach has been applied on a modified version of IEEE 30-bus test system. The results of this study are compared with the results of Genetic Algorithm (GA). The results show the superiority of the proposed method, both in the convergence speed as well as the final result comparing to other method.","PeriodicalId":201464,"journal":{"name":"2017 18th International Scientific Conference on Electric Power Engineering (EPE)","volume":"27 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-05-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126167119","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 : 2017-05-17DOI: 10.1109/EPE.2017.7967232
S. Kokin, D. Pavlyuchenko, D. Shevtsov
The change of operating conditions by circuit breaker switchings or initiation of emergency conditions (short circuits) is accompanied with transient processes. The physical nature of a transient process is redistribution of the stored energy between inductive and capacitive network elements. In some cases, circuit breaker opening may induce high-frequency overvoltages, while circuit breaker closing may cause high inrush currents, and emergency conditions may initiate overcurrents. These have a negative influence on electrical parameters of the network and cause the accelerated equipment deterioration. Controlled switching involves serial switching of each phase according to the given algorithm at the instant of current or voltage zero crossing. Such switching allows eliminating dangerous inrush currents and overvoltages and increasing the switching life of the equipment. Controlled switching is efficient under normal operating conditions both at circuit breaker closing, and at circuit breaker opening. Controlled closing of a reactive load by a circuit breaker allows minimizing inrush currents, while controlled opening reduces the probability for restrikes and overvoltage generation. Controlled opening of short circuit currents gives a possibility to reduce time of arcing to minimal values, which provides decreasing the electrical erosion of an arc-extinguishing device and increasing the circuit breaker life time. As a result, it improves power quality parameters, increases the life time of the power equipment and enhances switching capabilities of a circuit breaker.
{"title":"Features of controlled switching under normal and emergency operating conditions in medium voltage networks","authors":"S. Kokin, D. Pavlyuchenko, D. Shevtsov","doi":"10.1109/EPE.2017.7967232","DOIUrl":"https://doi.org/10.1109/EPE.2017.7967232","url":null,"abstract":"The change of operating conditions by circuit breaker switchings or initiation of emergency conditions (short circuits) is accompanied with transient processes. The physical nature of a transient process is redistribution of the stored energy between inductive and capacitive network elements. In some cases, circuit breaker opening may induce high-frequency overvoltages, while circuit breaker closing may cause high inrush currents, and emergency conditions may initiate overcurrents. These have a negative influence on electrical parameters of the network and cause the accelerated equipment deterioration. Controlled switching involves serial switching of each phase according to the given algorithm at the instant of current or voltage zero crossing. Such switching allows eliminating dangerous inrush currents and overvoltages and increasing the switching life of the equipment. Controlled switching is efficient under normal operating conditions both at circuit breaker closing, and at circuit breaker opening. Controlled closing of a reactive load by a circuit breaker allows minimizing inrush currents, while controlled opening reduces the probability for restrikes and overvoltage generation. Controlled opening of short circuit currents gives a possibility to reduce time of arcing to minimal values, which provides decreasing the electrical erosion of an arc-extinguishing device and increasing the circuit breaker life time. As a result, it improves power quality parameters, increases the life time of the power equipment and enhances switching capabilities of a circuit breaker.","PeriodicalId":201464,"journal":{"name":"2017 18th International Scientific Conference on Electric Power Engineering (EPE)","volume":"4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-05-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117267314","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 : 2017-05-17DOI: 10.1109/EPE.2017.7967267
V. Šály, M. Perný, J. Packa, F. Janiček, M. Váry, M. Mikolasek, J. Huran
Interest in amorphous silicon and carbon alloys is always actual mainly due to their particular advantages in comparison to conventional crystalline materials. The amorphous silicon carbide may be used in a number of micro-mechanical and micro-electronics applications and also for photovoltaic energy conversion devices. Boron doped thin layers of amorphous silicon carbide, presented in this paper, were prepared due to the optimization process for preparation of heterojunction solar cell. DC and AC measurement and subsequent evaluation were carried out in order to comprehensively assess the electrical transport processes in the prepared structures.
{"title":"AC and DC response of heterojunction a-SiC/c-Si for PV application","authors":"V. Šály, M. Perný, J. Packa, F. Janiček, M. Váry, M. Mikolasek, J. Huran","doi":"10.1109/EPE.2017.7967267","DOIUrl":"https://doi.org/10.1109/EPE.2017.7967267","url":null,"abstract":"Interest in amorphous silicon and carbon alloys is always actual mainly due to their particular advantages in comparison to conventional crystalline materials. The amorphous silicon carbide may be used in a number of micro-mechanical and micro-electronics applications and also for photovoltaic energy conversion devices. Boron doped thin layers of amorphous silicon carbide, presented in this paper, were prepared due to the optimization process for preparation of heterojunction solar cell. DC and AC measurement and subsequent evaluation were carried out in order to comprehensively assess the electrical transport processes in the prepared structures.","PeriodicalId":201464,"journal":{"name":"2017 18th International Scientific Conference on Electric Power Engineering (EPE)","volume":"12 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-05-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115867460","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 : 2017-05-17DOI: 10.1109/EPE.2017.7967228
A. Gawlak
The paper discusses the impact of microgeneration on the energy quality in a low-voltage (LV) network. Expressions are formulated for obtaining voltage deviations and fluctuations caused by microgeneration sources. Simulations are carried out to predict the impact of microgeneration on voltage drops in nodes of low-voltage lines.
{"title":"Impact of microgeneration in a low-voltage network on the quality parameters of electrical energy","authors":"A. Gawlak","doi":"10.1109/EPE.2017.7967228","DOIUrl":"https://doi.org/10.1109/EPE.2017.7967228","url":null,"abstract":"The paper discusses the impact of microgeneration on the energy quality in a low-voltage (LV) network. Expressions are formulated for obtaining voltage deviations and fluctuations caused by microgeneration sources. Simulations are carried out to predict the impact of microgeneration on voltage drops in nodes of low-voltage lines.","PeriodicalId":201464,"journal":{"name":"2017 18th International Scientific Conference on Electric Power Engineering (EPE)","volume":"160 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-05-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126740214","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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