Pub Date : 2020-12-07DOI: 10.1109/PECon48942.2020.9314604
Ayaka Nakamura, Faramrz Alsharif, A. Umemura, R. Takahashi, J. Tamura, A. Sakahara, Fumihito Tosaka, R. Nakamoto
The penetration level of renewable energies, for example, wind power and solar power, into the existing grid has been increasing significantly, which has impact on the power system stability during transient period. Especially, the power system with large scale wind farm (WF) may not be stabilized during transient period due to a disconnection of WF caused by a network fault. In this paper, a new cooperative PID Fuzzy Logic Control (FLC) based Virtual Synchronous Generator (VSG) control method by High Voltage Direct Current (HVDC) line and the battery is proposed. The presented strategy consists of the active and reactive power controls to support the stability of the power system with large scale wind farm during transient period. To confirm the effectiveness of this proposed strategy, simulation analyses are performed on PSCAD/EMTDC.
{"title":"Stabilization of Power System including Wind Farm by Cooperative Operation Between HVDC Interconnection Line and Battery","authors":"Ayaka Nakamura, Faramrz Alsharif, A. Umemura, R. Takahashi, J. Tamura, A. Sakahara, Fumihito Tosaka, R. Nakamoto","doi":"10.1109/PECon48942.2020.9314604","DOIUrl":"https://doi.org/10.1109/PECon48942.2020.9314604","url":null,"abstract":"The penetration level of renewable energies, for example, wind power and solar power, into the existing grid has been increasing significantly, which has impact on the power system stability during transient period. Especially, the power system with large scale wind farm (WF) may not be stabilized during transient period due to a disconnection of WF caused by a network fault. In this paper, a new cooperative PID Fuzzy Logic Control (FLC) based Virtual Synchronous Generator (VSG) control method by High Voltage Direct Current (HVDC) line and the battery is proposed. The presented strategy consists of the active and reactive power controls to support the stability of the power system with large scale wind farm during transient period. To confirm the effectiveness of this proposed strategy, simulation analyses are performed on PSCAD/EMTDC.","PeriodicalId":6768,"journal":{"name":"2020 IEEE International Conference on Power and Energy (PECon)","volume":"77 1","pages":"60-65"},"PeriodicalIF":0.0,"publicationDate":"2020-12-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83860692","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 : 2020-12-07DOI: 10.1109/PECon48942.2020.9314472
Tajuddin Nur, K. O. Bachri, Ilyas Mansur, M. Siregar
The effects of the shaping of magnet edge combining with dummy slots in stator core are studied in this paper. A permanent magnet generator is one of the electrical machine types greatly implemented in engineering and science applications. The permanent magnet generator performance refers to normal and tangential flux density and cogging torque. They can be forecasted depend on the quality and quantity of the distribution of the flux magnetic air gap. The most critical issue for the applications in the permanent magnet generator that needs to be contemplated is the value of cogging torque. The cogging torque is produced by the magnetic flux force from the magnet in the rotor core to the slot opening in the stator core. It is due to both the density of normal flux and the density of tangential flux in the air gap. Since many factors in a very stage influenced to produce the cogging torque, includes structure, material, and imperfection in manufacturing, hence the cogging torque in a permanent magnet generator is one of the difficult tasks to be reduced, especially for integral slot numbers. This work focused on the probe of magnet structure on the permanent magnet generator performance. In the study, a permanent magnet generator of 24 slot/ 30 pole has been chosen. By applying the finite element analysis of FEMM, it has been found that the tangential flux density can be reduced effectively. As an outcome, the cogging torque of the permanent magnet generator becomes decline, leads to the performance of the machine can be increased. The cogging torque of the permanent magnet generator with combining the shape of the magnet edge and dummy slot in the core of the stator can be brought down to 99.35 % contrasted with the initial structure..
{"title":"Study the Combining Magnet Edge Shaping and Dummy Slot on the Performance of PMG for Wind Power Applications","authors":"Tajuddin Nur, K. O. Bachri, Ilyas Mansur, M. Siregar","doi":"10.1109/PECon48942.2020.9314472","DOIUrl":"https://doi.org/10.1109/PECon48942.2020.9314472","url":null,"abstract":"The effects of the shaping of magnet edge combining with dummy slots in stator core are studied in this paper. A permanent magnet generator is one of the electrical machine types greatly implemented in engineering and science applications. The permanent magnet generator performance refers to normal and tangential flux density and cogging torque. They can be forecasted depend on the quality and quantity of the distribution of the flux magnetic air gap. The most critical issue for the applications in the permanent magnet generator that needs to be contemplated is the value of cogging torque. The cogging torque is produced by the magnetic flux force from the magnet in the rotor core to the slot opening in the stator core. It is due to both the density of normal flux and the density of tangential flux in the air gap. Since many factors in a very stage influenced to produce the cogging torque, includes structure, material, and imperfection in manufacturing, hence the cogging torque in a permanent magnet generator is one of the difficult tasks to be reduced, especially for integral slot numbers. This work focused on the probe of magnet structure on the permanent magnet generator performance. In the study, a permanent magnet generator of 24 slot/ 30 pole has been chosen. By applying the finite element analysis of FEMM, it has been found that the tangential flux density can be reduced effectively. As an outcome, the cogging torque of the permanent magnet generator becomes decline, leads to the performance of the machine can be increased. The cogging torque of the permanent magnet generator with combining the shape of the magnet edge and dummy slot in the core of the stator can be brought down to 99.35 % contrasted with the initial structure..","PeriodicalId":6768,"journal":{"name":"2020 IEEE International Conference on Power and Energy (PECon)","volume":"10 1","pages":"229-234"},"PeriodicalIF":0.0,"publicationDate":"2020-12-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89123289","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 : 2020-12-07DOI: 10.1109/PECon48942.2020.9314412
H. Illias, Nabilah Syuhada Ishak, H. Mokhlis, Md. Zahir Hossain
A prototype of smart hybrid renewable energy harvesting from water flow and storage system with Internet of Things (IoT)-based energy monitoring system was developed. The energy harvested from the water flow was stored in an energy storage system and could be utilized for low-voltage applications. The possible maximum energy that can be harvested from this prototype is around 100Wh per day. The IoT-based energy monitoring system was used to monitor the amount of energy harvested and utilized in real time mode and remotely. The energy harvesting part was evaluated under different parameters to identify the conditions that can yield the possible maximum energy harvested. It was found that the distance between the energy harvester and the source of water flow, the rate of water flow, the orientation of the harvester sensors and the number of sensors strongly influence the amount of energy harvested.
{"title":"IoT-based Hybrid Renewable Energy Harvesting System from Water Flow","authors":"H. Illias, Nabilah Syuhada Ishak, H. Mokhlis, Md. Zahir Hossain","doi":"10.1109/PECon48942.2020.9314412","DOIUrl":"https://doi.org/10.1109/PECon48942.2020.9314412","url":null,"abstract":"A prototype of smart hybrid renewable energy harvesting from water flow and storage system with Internet of Things (IoT)-based energy monitoring system was developed. The energy harvested from the water flow was stored in an energy storage system and could be utilized for low-voltage applications. The possible maximum energy that can be harvested from this prototype is around 100Wh per day. The IoT-based energy monitoring system was used to monitor the amount of energy harvested and utilized in real time mode and remotely. The energy harvesting part was evaluated under different parameters to identify the conditions that can yield the possible maximum energy harvested. It was found that the distance between the energy harvester and the source of water flow, the rate of water flow, the orientation of the harvester sensors and the number of sensors strongly influence the amount of energy harvested.","PeriodicalId":6768,"journal":{"name":"2020 IEEE International Conference on Power and Energy (PECon)","volume":"209 1","pages":"204-208"},"PeriodicalIF":0.0,"publicationDate":"2020-12-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78163971","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 : 2020-12-07DOI: 10.1109/PECon48942.2020.9314441
Mustafa Abo alwez, J. Jasni, M. A. Mohd Radzi, N. Azis
The use of solar energy to generate electricity has had a significant increase in recent years, and it is considered a modern energy source, as its market price is decreasing and is in constant development. However, other countries suffer from a huge shortage of electric power generation. Iraq generates half of its electricity demand, and it only supplies 12 hours of electricity a day for one area to meet this demand. This study discusses the sizing of a PV system to cover the shortage of electricity for one residential quarter which contains 20 houses. Moreover, the initial cost of installing the PV system is calculated to cover the shortage of electricity. Specifically, the study covers a residential quarter in Samawah.
{"title":"PV system sizing to cover the Electricity shortage in a Residential quarter in Iraq","authors":"Mustafa Abo alwez, J. Jasni, M. A. Mohd Radzi, N. Azis","doi":"10.1109/PECon48942.2020.9314441","DOIUrl":"https://doi.org/10.1109/PECon48942.2020.9314441","url":null,"abstract":"The use of solar energy to generate electricity has had a significant increase in recent years, and it is considered a modern energy source, as its market price is decreasing and is in constant development. However, other countries suffer from a huge shortage of electric power generation. Iraq generates half of its electricity demand, and it only supplies 12 hours of electricity a day for one area to meet this demand. This study discusses the sizing of a PV system to cover the shortage of electricity for one residential quarter which contains 20 houses. Moreover, the initial cost of installing the PV system is calculated to cover the shortage of electricity. Specifically, the study covers a residential quarter in Samawah.","PeriodicalId":6768,"journal":{"name":"2020 IEEE International Conference on Power and Energy (PECon)","volume":"2 1","pages":"214-218"},"PeriodicalIF":0.0,"publicationDate":"2020-12-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73800628","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 : 2020-12-07DOI: 10.1109/PECon48942.2020.9314416
Mohammed Ghazwan Al-Mufti, R. A. Ghani
Energy storage system (ESS) has gained a great deal of attention because of its very substantial benefits to the electricity producers/providers and consumers such as power factor control (PFC), peak shaving /shifting and integrating of renewable energy (RE) to the utility grid. Peak shaving reduces the consumption of power from the grid at peak times. In addition, ESS location and technology maintain a high power factor due to the reduction in the reactive power drawn from the utility grid. The aim of this study is to propose a new ESS controller based on the pricing of Enhanced Time of Use scheme (EToU). The proposed control system consists of a combined state of charge (SOC) set points and electricity price algorithm that sends a signal to enable charge and discharge. A sample model along with real commercial and industrial data collected from Kuala Lumpur City Centre (KLCC) and Malaysia Marine and Heavy Engineering (MHEE) are used to test and evaluate the proposed controller. The results of ESS simulation showed that the system performs peak shaving effectively when electricity cost has been reduced significantly.
{"title":"Control of Battery Energy Storage System for Peak Shaving using Enhanced Time of Use Scheme","authors":"Mohammed Ghazwan Al-Mufti, R. A. Ghani","doi":"10.1109/PECon48942.2020.9314416","DOIUrl":"https://doi.org/10.1109/PECon48942.2020.9314416","url":null,"abstract":"Energy storage system (ESS) has gained a great deal of attention because of its very substantial benefits to the electricity producers/providers and consumers such as power factor control (PFC), peak shaving /shifting and integrating of renewable energy (RE) to the utility grid. Peak shaving reduces the consumption of power from the grid at peak times. In addition, ESS location and technology maintain a high power factor due to the reduction in the reactive power drawn from the utility grid. The aim of this study is to propose a new ESS controller based on the pricing of Enhanced Time of Use scheme (EToU). The proposed control system consists of a combined state of charge (SOC) set points and electricity price algorithm that sends a signal to enable charge and discharge. A sample model along with real commercial and industrial data collected from Kuala Lumpur City Centre (KLCC) and Malaysia Marine and Heavy Engineering (MHEE) are used to test and evaluate the proposed controller. The results of ESS simulation showed that the system performs peak shaving effectively when electricity cost has been reduced significantly.","PeriodicalId":6768,"journal":{"name":"2020 IEEE International Conference on Power and Energy (PECon)","volume":"109 1","pages":"224-228"},"PeriodicalIF":0.0,"publicationDate":"2020-12-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74134798","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 : 2020-12-07DOI: 10.1109/PECon48942.2020.9314621
Takamasa Sato, F. Asharif, A. Umemura, R. Takahashi, J. Tamura
Renewable energy sources are a promising future power source. However, many of the renewable energy power sources such as solar and wind power are connected to the power grid through inverters. Such power sources controlled with an inverter have almost no inertia and synchronization power. Therefore, as the amount of the renewable energy power sources increases, conventional synchronous generators need to be disconnected, and thus, the inertial and synchronization powers of the system decrease. Such systems are vulnerable to network fault and can have large frequency fluctuations. In this paper, virtual inertia control and reactive power control are applied to a variable speed wind turbines with permanent magnet synchronous generator (VSWT-PMSG) based wind farm and storage battery connected to the grid. The reactive power control is activated after a ground fault accident to prevent fixed speed wind turbines with squirrel cage induction generator (FSWT-SCIG) based wind farm from becoming unstable and disconnected. Then the virtual inertia control (active power control) is activated when the system frequency fluctuations become large due to the FSWT-SCIG based wind farm disconnection. Effectiveness of the proposed method on the transient stability improvement during a grid fault is evaluated by simulation analyses on PSCAD/EMTDC.
{"title":"Cooperative Virtual Inertia and Reactive Power Control of PMSG Wind Generator and Battery for Improving Transient Stability of Power System","authors":"Takamasa Sato, F. Asharif, A. Umemura, R. Takahashi, J. Tamura","doi":"10.1109/PECon48942.2020.9314621","DOIUrl":"https://doi.org/10.1109/PECon48942.2020.9314621","url":null,"abstract":"Renewable energy sources are a promising future power source. However, many of the renewable energy power sources such as solar and wind power are connected to the power grid through inverters. Such power sources controlled with an inverter have almost no inertia and synchronization power. Therefore, as the amount of the renewable energy power sources increases, conventional synchronous generators need to be disconnected, and thus, the inertial and synchronization powers of the system decrease. Such systems are vulnerable to network fault and can have large frequency fluctuations. In this paper, virtual inertia control and reactive power control are applied to a variable speed wind turbines with permanent magnet synchronous generator (VSWT-PMSG) based wind farm and storage battery connected to the grid. The reactive power control is activated after a ground fault accident to prevent fixed speed wind turbines with squirrel cage induction generator (FSWT-SCIG) based wind farm from becoming unstable and disconnected. Then the virtual inertia control (active power control) is activated when the system frequency fluctuations become large due to the FSWT-SCIG based wind farm disconnection. Effectiveness of the proposed method on the transient stability improvement during a grid fault is evaluated by simulation analyses on PSCAD/EMTDC.","PeriodicalId":6768,"journal":{"name":"2020 IEEE International Conference on Power and Energy (PECon)","volume":"9 1","pages":"101-106"},"PeriodicalIF":0.0,"publicationDate":"2020-12-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82060396","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 : 2020-12-07DOI: 10.1109/PECon48942.2020.9314492
Mohd. Zaki bin Daud, Lee Kar Kuan
The critical loads in every vital economic sectors such as manufacturing, communication, and healthcare sector are mostly sensitive to the power disturbances. Thus, a stable, reliant and continuous power supply is highly required to maintain the equipment works in its maximum efficiency. In this study, an uninterruptible power supply (UPS) using double conversion technique is presented. UPS system acts as a backup power supply and protects the sensitive equipment from power disturbances and interruption. The simulation of designing converters such as rectifier, boost converter and inverter are presented by using computer-aided design software MATLAB. All simulation results show the UPS system able to provide continuous power supply with acceptable power quality to the critical loads.
{"title":"Uninterruptible Power Supply (UPS) Using Double Conversion Technique","authors":"Mohd. Zaki bin Daud, Lee Kar Kuan","doi":"10.1109/PECon48942.2020.9314492","DOIUrl":"https://doi.org/10.1109/PECon48942.2020.9314492","url":null,"abstract":"The critical loads in every vital economic sectors such as manufacturing, communication, and healthcare sector are mostly sensitive to the power disturbances. Thus, a stable, reliant and continuous power supply is highly required to maintain the equipment works in its maximum efficiency. In this study, an uninterruptible power supply (UPS) using double conversion technique is presented. UPS system acts as a backup power supply and protects the sensitive equipment from power disturbances and interruption. The simulation of designing converters such as rectifier, boost converter and inverter are presented by using computer-aided design software MATLAB. All simulation results show the UPS system able to provide continuous power supply with acceptable power quality to the critical loads.","PeriodicalId":6768,"journal":{"name":"2020 IEEE International Conference on Power and Energy (PECon)","volume":"28 1","pages":"159-164"},"PeriodicalIF":0.0,"publicationDate":"2020-12-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87899095","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 : 2020-12-07DOI: 10.1109/PECon48942.2020.9314405
A. H. Tan, Chin Leei Cham, Esther Hee Ying Lim
This paper considers the effects of manufacturing factors on glove quality. Four factors are considered, namely the curing temperature profile, temperature of latex, percentage of calcium nitrate and the oven temperature after coagulant dip. The glove quality is measured based on the weight of the gloves, tensile strength after ageing, number of gloves with pinholes and finger thickness. The analysis is carried out using Wilcoxon signed rank tests where the significance of each factor on the glove quality can be determined. The glove quality is subsequently predicted using neural networks. It is shown that the weight of the gloves can be predicted quite well using a simple neural network structure. However, the other quality measures cannot be predicted equally well. More complicated input-output relationships are likely to exist for these. The results from this work are important for aiding decisions on process changes in glove manufacturing.
{"title":"Analysis and Prediction of Glove Quality Based on Manufacturing Factors","authors":"A. H. Tan, Chin Leei Cham, Esther Hee Ying Lim","doi":"10.1109/PECon48942.2020.9314405","DOIUrl":"https://doi.org/10.1109/PECon48942.2020.9314405","url":null,"abstract":"This paper considers the effects of manufacturing factors on glove quality. Four factors are considered, namely the curing temperature profile, temperature of latex, percentage of calcium nitrate and the oven temperature after coagulant dip. The glove quality is measured based on the weight of the gloves, tensile strength after ageing, number of gloves with pinholes and finger thickness. The analysis is carried out using Wilcoxon signed rank tests where the significance of each factor on the glove quality can be determined. The glove quality is subsequently predicted using neural networks. It is shown that the weight of the gloves can be predicted quite well using a simple neural network structure. However, the other quality measures cannot be predicted equally well. More complicated input-output relationships are likely to exist for these. The results from this work are important for aiding decisions on process changes in glove manufacturing.","PeriodicalId":6768,"journal":{"name":"2020 IEEE International Conference on Power and Energy (PECon)","volume":"18 1","pages":"420-425"},"PeriodicalIF":0.0,"publicationDate":"2020-12-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84583211","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 : 2020-12-07DOI: 10.1109/PECon48942.2020.9314300
S. M. Sanzad Lumen, R. Kannan, N. Yahaya
Due to the advantages of DC microgrid and with the advancement of power electronics, DC microgrid is getting immense attention in the field of research. Protection and hereafter the protective devices for the microgrid application are two vital areas that need to be explored and developed further. However, developing appropriate protective devices like DC circuit breaker (DCCB) possesses a lot of challenges. The main challenge is to interrupt a current which does not have a natural zero crossing like AC current has. Different types of DC circuit breaker topologies such as Mechanical, Solid state, Hybrid, Z-source and some modified versions of these topologies have been proposed in the literature. In this paper, different types of DCCB topologies will be discussed and their advantages and limitations will be thoroughly investigated with a special focus to solid state based topologies.
{"title":"DC Circuit Breaker: A Comprehensive Review of Solid State Topologies","authors":"S. M. Sanzad Lumen, R. Kannan, N. Yahaya","doi":"10.1109/PECon48942.2020.9314300","DOIUrl":"https://doi.org/10.1109/PECon48942.2020.9314300","url":null,"abstract":"Due to the advantages of DC microgrid and with the advancement of power electronics, DC microgrid is getting immense attention in the field of research. Protection and hereafter the protective devices for the microgrid application are two vital areas that need to be explored and developed further. However, developing appropriate protective devices like DC circuit breaker (DCCB) possesses a lot of challenges. The main challenge is to interrupt a current which does not have a natural zero crossing like AC current has. Different types of DC circuit breaker topologies such as Mechanical, Solid state, Hybrid, Z-source and some modified versions of these topologies have been proposed in the literature. In this paper, different types of DCCB topologies will be discussed and their advantages and limitations will be thoroughly investigated with a special focus to solid state based topologies.","PeriodicalId":6768,"journal":{"name":"2020 IEEE International Conference on Power and Energy (PECon)","volume":"38 1","pages":"1-6"},"PeriodicalIF":0.0,"publicationDate":"2020-12-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81221965","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 : 2020-12-07DOI: 10.1109/PECon48942.2020.9314527
P. Le, Duong Minh Bui, C. Ngo, Chau Duy Huynh, T. Nguyen, Thanh Dung Nguyen
In distribution networks, either nominal bus-voltage values or voltage values calculated right after some pre-determined cycles are mostly used as reference voltages for power-flow and fault-current analysis. The use of nominal bus-voltage values could lead to inaccurate calculations of power flows and fault currents in the distribution network (DN), which can result in the protection mis-coordination. Moreover, the analysis of power flows and fault currents is continuously repeated by the updated bus-voltage values, which could be not necessary and complicated to settings of overcurrent relays (OCRs). Therefore, this paper will propose a novel statistical data-filtering method to determine confidence intervals of bus voltages in a distribution network for effectively self-adjusting pickup and tripping thresholds of overcurrent relays without periodic calculations of fault parameters. In case of not having any change in DN topologies, selection of the best confidence intervals of bus voltages can minimize the repeated calculations of power flows as well as fault currents, meanwhile ensure the reliable operation of OC relays in the distribution network. In addition, the proposed data-filtering method of bus voltages is also compared to other methods, e.g. Kalman filter-KF, Density-Based Spatial Clustering of Applications with Noise-DBSCAN, Discrete Wavelet Transform-DWT, and Singular Spectrum Analysis-SSA. Simulation results of a protection system of 22kV DN are presented to validate the effective setting of pickup and tripping thresholds of overcurrent relays through the most confidence intervals of bus voltages determined.
{"title":"Effectively Determine Confidence Intervals of Bus Voltages Served for Setting Overcurrent Relays in Distribution Networks","authors":"P. Le, Duong Minh Bui, C. Ngo, Chau Duy Huynh, T. Nguyen, Thanh Dung Nguyen","doi":"10.1109/PECon48942.2020.9314527","DOIUrl":"https://doi.org/10.1109/PECon48942.2020.9314527","url":null,"abstract":"In distribution networks, either nominal bus-voltage values or voltage values calculated right after some pre-determined cycles are mostly used as reference voltages for power-flow and fault-current analysis. The use of nominal bus-voltage values could lead to inaccurate calculations of power flows and fault currents in the distribution network (DN), which can result in the protection mis-coordination. Moreover, the analysis of power flows and fault currents is continuously repeated by the updated bus-voltage values, which could be not necessary and complicated to settings of overcurrent relays (OCRs). Therefore, this paper will propose a novel statistical data-filtering method to determine confidence intervals of bus voltages in a distribution network for effectively self-adjusting pickup and tripping thresholds of overcurrent relays without periodic calculations of fault parameters. In case of not having any change in DN topologies, selection of the best confidence intervals of bus voltages can minimize the repeated calculations of power flows as well as fault currents, meanwhile ensure the reliable operation of OC relays in the distribution network. In addition, the proposed data-filtering method of bus voltages is also compared to other methods, e.g. Kalman filter-KF, Density-Based Spatial Clustering of Applications with Noise-DBSCAN, Discrete Wavelet Transform-DWT, and Singular Spectrum Analysis-SSA. Simulation results of a protection system of 22kV DN are presented to validate the effective setting of pickup and tripping thresholds of overcurrent relays through the most confidence intervals of bus voltages determined.","PeriodicalId":6768,"journal":{"name":"2020 IEEE International Conference on Power and Energy (PECon)","volume":"10 1","pages":"131-136"},"PeriodicalIF":0.0,"publicationDate":"2020-12-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79896956","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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