Pub Date : 2022-03-07DOI: 10.1109/ICPEA53519.2022.9744665
Ramin Nourollahi, Saman Mazaheri-Khamaneh, B. Mohammadi-ivatloo, K. Zare, A. Anvari‐Moghaddam, Z. Abdul-Malek
Various energy consumers, such as large energy consumers (LEC), are targeted to procure the demanded energy from various power markets such as the pool market and different energy resources, including renewable energy resources (RES), and conventional energy resources optimize the traded energy. In this article, a novel decision-making framework is proposed to schedule the LEC. The proposed technique in this article is based on the second-order stochastic dominance (SSD) to investigate the uncertainty in the total operation cost of the LEC. It is assumed that the market price, pool price, electricity load, and the power output of renewable energy sources (RES), including PV and WT, are uncertain parameters. In the proposed SSD-constrained stochastic programming, demand response programming (DRP) is provided to decrease the operation cost of the LEC. A case study is used to illustrate the effectiveness and efficiency of the novel SSD approach. According to the simulation results, the operation cost of LEC is remarkably decreased from $62,960 to $59,550 in the risk-neutral case (without including risk factor) and SSD case (worst case) with considering DRP, respectively.
{"title":"Two-stage Optimal Risk Management of Large Electricity Consumer Using Second-order Stochastic Dominance","authors":"Ramin Nourollahi, Saman Mazaheri-Khamaneh, B. Mohammadi-ivatloo, K. Zare, A. Anvari‐Moghaddam, Z. Abdul-Malek","doi":"10.1109/ICPEA53519.2022.9744665","DOIUrl":"https://doi.org/10.1109/ICPEA53519.2022.9744665","url":null,"abstract":"Various energy consumers, such as large energy consumers (LEC), are targeted to procure the demanded energy from various power markets such as the pool market and different energy resources, including renewable energy resources (RES), and conventional energy resources optimize the traded energy. In this article, a novel decision-making framework is proposed to schedule the LEC. The proposed technique in this article is based on the second-order stochastic dominance (SSD) to investigate the uncertainty in the total operation cost of the LEC. It is assumed that the market price, pool price, electricity load, and the power output of renewable energy sources (RES), including PV and WT, are uncertain parameters. In the proposed SSD-constrained stochastic programming, demand response programming (DRP) is provided to decrease the operation cost of the LEC. A case study is used to illustrate the effectiveness and efficiency of the novel SSD approach. According to the simulation results, the operation cost of LEC is remarkably decreased from $62,960 to $59,550 in the risk-neutral case (without including risk factor) and SSD case (worst case) with considering DRP, respectively.","PeriodicalId":371063,"journal":{"name":"2022 IEEE International Conference in Power Engineering Application (ICPEA)","volume":"70 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-03-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117080704","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 : 2022-03-07DOI: 10.1109/ICPEA53519.2022.9744666
Alireza Akbari-Dibavar, K. Zare, B. Mohammadi-ivatloo, A. Anvari‐Moghaddam, Z. Abdul-Malek
Considering recent developments in photovoltaic (PV) systems, storage, and electrical vehicles, not unexpected that one day smart homes will also take part in energy markets directly. In this regard, the presented paper proposes a stochastic programming approach to manage the consumption of a smart home according to intermittent PV system production and uncertain energy prices to make the smart home available for taking part in the local day-ahead (DA) energy market. A battery storage system is integrated to make flexibility against price fluctuations. Furthermore, modeling of plug-in electric vehicles (PEV) is also provided, where the traveling pattern is modeled through scenarios. The goal is to maximize the daily profit of the smart home while the welfare of the inhabitants is satisfied by considering comfort constraints. In addition, the conditional value at risk (CVaR) risk index is considered to manage associated risk with gained profit. The obtained results show the effectiveness of the optimization framework, in which the expected daily profit of the homeowner can reach $1.72 per day in the risk-neutral condition.
{"title":"CVaR-based Stochastic Energy Management of a Smart Home","authors":"Alireza Akbari-Dibavar, K. Zare, B. Mohammadi-ivatloo, A. Anvari‐Moghaddam, Z. Abdul-Malek","doi":"10.1109/ICPEA53519.2022.9744666","DOIUrl":"https://doi.org/10.1109/ICPEA53519.2022.9744666","url":null,"abstract":"Considering recent developments in photovoltaic (PV) systems, storage, and electrical vehicles, not unexpected that one day smart homes will also take part in energy markets directly. In this regard, the presented paper proposes a stochastic programming approach to manage the consumption of a smart home according to intermittent PV system production and uncertain energy prices to make the smart home available for taking part in the local day-ahead (DA) energy market. A battery storage system is integrated to make flexibility against price fluctuations. Furthermore, modeling of plug-in electric vehicles (PEV) is also provided, where the traveling pattern is modeled through scenarios. The goal is to maximize the daily profit of the smart home while the welfare of the inhabitants is satisfied by considering comfort constraints. In addition, the conditional value at risk (CVaR) risk index is considered to manage associated risk with gained profit. The obtained results show the effectiveness of the optimization framework, in which the expected daily profit of the homeowner can reach $1.72 per day in the risk-neutral condition.","PeriodicalId":371063,"journal":{"name":"2022 IEEE International Conference in Power Engineering Application (ICPEA)","volume":"115 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-03-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127043429","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 : 2022-03-07DOI: 10.1109/ICPEA53519.2022.9744647
Laya M.A. Al-Hilfi, S. Morris, Wong Jianhui, B. Venkatesh, Chew Kuew Wai, Chua Kein Huat
A photovoltaic system is a part of the renewable energy family. The Photovoltaic system's operating principle is based on converting sun radiation directly into electricity and therefore it needs energy storage to accumulate the excess energy generated by the system to use in times of need. The most common energy storage type used in Malaysia is batteries (BESS), a short-term storage solution with many drawbacks such as a high yearly storage cost and negative environmental impact resulting from emitting carbon dioxide during operation and recycling stages. These disadvantages have inspired studying the benefits of a new energy storage technique proposed in the market, gravity energy storage system (GESS). The gravity energy storage has been discussed in the past couple of years as the perfect alternative to batteries with advantages of high-power capacity and low environmental impact. This study considers a small grid size energy generation system of less than 10 MW using a PV system and two types of energy storage, the BESS and GESS. The study also includes a comparison between BESS and GESS systems in terms of their power generation, storage capacity, carbon footprint, and usable capacity when connected to a built PV system. The outcome of the study shows that GESS has the potential to outweigh BESS making it a more suitable energy storage option for the PV system. The BES system results in a carbon dioxide footprint of 3199- 13710 g CO2-eq per battery with an operating cost much higher than that of the GESS system and a usable capacity lesser than the GESS system due to the depth of discharge (DoD) and round-trip efficiency. Nonetheless, the BESS has the advantage in terms of installation cost, as the GESS installation can cost up to 2.97 million MYR, while BESS costs 1.25 million MYR for a similar system.
{"title":"Exploration of the Suitability of Gravity Energy Storage in Malaysian Grid Systems","authors":"Laya M.A. Al-Hilfi, S. Morris, Wong Jianhui, B. Venkatesh, Chew Kuew Wai, Chua Kein Huat","doi":"10.1109/ICPEA53519.2022.9744647","DOIUrl":"https://doi.org/10.1109/ICPEA53519.2022.9744647","url":null,"abstract":"A photovoltaic system is a part of the renewable energy family. The Photovoltaic system's operating principle is based on converting sun radiation directly into electricity and therefore it needs energy storage to accumulate the excess energy generated by the system to use in times of need. The most common energy storage type used in Malaysia is batteries (BESS), a short-term storage solution with many drawbacks such as a high yearly storage cost and negative environmental impact resulting from emitting carbon dioxide during operation and recycling stages. These disadvantages have inspired studying the benefits of a new energy storage technique proposed in the market, gravity energy storage system (GESS). The gravity energy storage has been discussed in the past couple of years as the perfect alternative to batteries with advantages of high-power capacity and low environmental impact. This study considers a small grid size energy generation system of less than 10 MW using a PV system and two types of energy storage, the BESS and GESS. The study also includes a comparison between BESS and GESS systems in terms of their power generation, storage capacity, carbon footprint, and usable capacity when connected to a built PV system. The outcome of the study shows that GESS has the potential to outweigh BESS making it a more suitable energy storage option for the PV system. The BES system results in a carbon dioxide footprint of 3199- 13710 g CO2-eq per battery with an operating cost much higher than that of the GESS system and a usable capacity lesser than the GESS system due to the depth of discharge (DoD) and round-trip efficiency. Nonetheless, the BESS has the advantage in terms of installation cost, as the GESS installation can cost up to 2.97 million MYR, while BESS costs 1.25 million MYR for a similar system.","PeriodicalId":371063,"journal":{"name":"2022 IEEE International Conference in Power Engineering Application (ICPEA)","volume":"1199 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-03-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128973404","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 : 2022-03-07DOI: 10.1109/ICPEA53519.2022.9744671
Dick Sang Hoo, K. Chua, L. Hau, K. Y. Chong, Y. Lim, X. R. Chua, Li Wang
Electrified rails with the recuperation of regenerative braking energy offer a higher energy efficiency, lower carbon footprint, and lower operation and maintenance costs as compared to that of the system without recuperation of regenerative braking energy. However, due to some technical constraints, sometimes the regenerative braking energy needs to be dissipated via resistor banks to ensure system stability. This paper aims to investigate the amount of regenerative braking energy that can be recovered under various train operating conditions such as difference station distance, train speed, track elevation, and loading conditions. A rail power supply and distribution system for Malaysia's MRT Line 2 is modeled using ETAP - eTraX software. The dynamic behavior of the trains has been included in the simulation model to improve the accuracy of the study. The operating conditions with the highest amount of regenerative braking energy have been identified in this study.
{"title":"An Investigation on Recuperation of Regenerative Braking Energy in DC Railway Electrification System","authors":"Dick Sang Hoo, K. Chua, L. Hau, K. Y. Chong, Y. Lim, X. R. Chua, Li Wang","doi":"10.1109/ICPEA53519.2022.9744671","DOIUrl":"https://doi.org/10.1109/ICPEA53519.2022.9744671","url":null,"abstract":"Electrified rails with the recuperation of regenerative braking energy offer a higher energy efficiency, lower carbon footprint, and lower operation and maintenance costs as compared to that of the system without recuperation of regenerative braking energy. However, due to some technical constraints, sometimes the regenerative braking energy needs to be dissipated via resistor banks to ensure system stability. This paper aims to investigate the amount of regenerative braking energy that can be recovered under various train operating conditions such as difference station distance, train speed, track elevation, and loading conditions. A rail power supply and distribution system for Malaysia's MRT Line 2 is modeled using ETAP - eTraX software. The dynamic behavior of the trains has been included in the simulation model to improve the accuracy of the study. The operating conditions with the highest amount of regenerative braking energy have been identified in this study.","PeriodicalId":371063,"journal":{"name":"2022 IEEE International Conference in Power Engineering Application (ICPEA)","volume":"4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-03-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130921370","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 : 2022-03-07DOI: 10.1109/ICPEA53519.2022.9744700
M. A. T. Mat Yusoh, A. F. Abidin, Faris Sutan Abd Latif Hamidi, Mohd Anuar Mohammed Ayub, M. Y. Mat Zain, Norziana Aminudin
The goal of this study is to use the Series Active Power Filter (SAPF) to mitigate voltage issues on the three-phase system in terms of voltage sag. The design and modeling of a three-phase SAPF for voltage compensation of non-linear loads are presented in this study. Simulations in MATLAB/Simulink are used to verify the performance of SAPF design using ANN controller and compared to the conventional PI controller. The concept of this technique is by inserting SAPF between the source and nonlinear load. Then, if the system has problem with voltage sag, the injection of harmonic voltages (vf) across the coupling transformer into voltage load in order to maintain the voltage load in normal condition. To maintain a clean sinusoidal voltage waveform across the nonlinear load, the injected harmonic voltages are added/subtracted to/from the source voltage. In this case, the ANN controller based on the back-propagation technique is applied to tune the appropriate parameters of controller during voltage sag issue. The result shows ANN controller is better than PI controller in term of percentage error of voltage sag and total harmonic distortion (THD).
{"title":"Performance of Series Active Power Filter (SAPF) Using ANN Controller for Eliminate Disturbance of Voltage Sag","authors":"M. A. T. Mat Yusoh, A. F. Abidin, Faris Sutan Abd Latif Hamidi, Mohd Anuar Mohammed Ayub, M. Y. Mat Zain, Norziana Aminudin","doi":"10.1109/ICPEA53519.2022.9744700","DOIUrl":"https://doi.org/10.1109/ICPEA53519.2022.9744700","url":null,"abstract":"The goal of this study is to use the Series Active Power Filter (SAPF) to mitigate voltage issues on the three-phase system in terms of voltage sag. The design and modeling of a three-phase SAPF for voltage compensation of non-linear loads are presented in this study. Simulations in MATLAB/Simulink are used to verify the performance of SAPF design using ANN controller and compared to the conventional PI controller. The concept of this technique is by inserting SAPF between the source and nonlinear load. Then, if the system has problem with voltage sag, the injection of harmonic voltages (vf) across the coupling transformer into voltage load in order to maintain the voltage load in normal condition. To maintain a clean sinusoidal voltage waveform across the nonlinear load, the injected harmonic voltages are added/subtracted to/from the source voltage. In this case, the ANN controller based on the back-propagation technique is applied to tune the appropriate parameters of controller during voltage sag issue. The result shows ANN controller is better than PI controller in term of percentage error of voltage sag and total harmonic distortion (THD).","PeriodicalId":371063,"journal":{"name":"2022 IEEE International Conference in Power Engineering Application (ICPEA)","volume":"89 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-03-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128590771","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 : 2022-03-07DOI: 10.1109/ICPEA53519.2022.9744697
Sean Monemi, Travon Dent, Antonio Nunez
As the possibility for power system interruption increases, whether from fault or cyberattack, research into methods for maintaining the stability of power systems has become imperative for utility companies and their consumers. This paper contributes to that research by exploring the implementation of protection relays in a model of IEEE 14-Bus power grid system using a Real Time Digital Simulator (RTDS). The IEEE 14-Bus power grid will be built and tested using SEL-311L power protection relays. Different scenarios are studied during our testing procedure and all the simulation will be done in real time using the RTDS system.
{"title":"A Model of System Protection in IEEE 14-bus Power Grid","authors":"Sean Monemi, Travon Dent, Antonio Nunez","doi":"10.1109/ICPEA53519.2022.9744697","DOIUrl":"https://doi.org/10.1109/ICPEA53519.2022.9744697","url":null,"abstract":"As the possibility for power system interruption increases, whether from fault or cyberattack, research into methods for maintaining the stability of power systems has become imperative for utility companies and their consumers. This paper contributes to that research by exploring the implementation of protection relays in a model of IEEE 14-Bus power grid system using a Real Time Digital Simulator (RTDS). The IEEE 14-Bus power grid will be built and tested using SEL-311L power protection relays. Different scenarios are studied during our testing procedure and all the simulation will be done in real time using the RTDS system.","PeriodicalId":371063,"journal":{"name":"2022 IEEE International Conference in Power Engineering Application (ICPEA)","volume":"74 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-03-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125917137","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 : 2022-03-07DOI: 10.1109/ICPEA53519.2022.9744639
Sophea Elmmydya Damian, L. A. Wong
A method to obtain the optimal placement and sizing of battery energy storage system (BESS) to reduce the voltage fluctuation and total active power losses in the distribution system was suggested in this paper. Harris' Hawks Optimization (HHO) algorithm was used to perform the optimization process. Three different cases with different objective functions were involved in determining BESS optimal placement and sizing. The effects of installing different number of BESS in the distribution system for the purposes of voltage regulation and power losses reduction were investigated in this work. The efficiency of the HHO has been verified by comparing it with the Whale Optimization Algorithm (WOA). The results showed that HHO has excellent results in terms of achieving BESS’ optimal placement and size for all cases. When BESS are placed at multiple buses, preferable results can be obtained.
{"title":"Optimal Energy Storage Placement and Sizing in Distribution System","authors":"Sophea Elmmydya Damian, L. A. Wong","doi":"10.1109/ICPEA53519.2022.9744639","DOIUrl":"https://doi.org/10.1109/ICPEA53519.2022.9744639","url":null,"abstract":"A method to obtain the optimal placement and sizing of battery energy storage system (BESS) to reduce the voltage fluctuation and total active power losses in the distribution system was suggested in this paper. Harris' Hawks Optimization (HHO) algorithm was used to perform the optimization process. Three different cases with different objective functions were involved in determining BESS optimal placement and sizing. The effects of installing different number of BESS in the distribution system for the purposes of voltage regulation and power losses reduction were investigated in this work. The efficiency of the HHO has been verified by comparing it with the Whale Optimization Algorithm (WOA). The results showed that HHO has excellent results in terms of achieving BESS’ optimal placement and size for all cases. When BESS are placed at multiple buses, preferable results can be obtained.","PeriodicalId":371063,"journal":{"name":"2022 IEEE International Conference in Power Engineering Application (ICPEA)","volume":"2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-03-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122976121","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 : 2022-03-07DOI: 10.1109/ICPEA53519.2022.9744651
Jariyani Burhanudin, A. S. Abu Hasim, A. M. Ishak, Syed Mohd Fairuz, S. Dardin, A. A. Azid, J. Burhanudin
Matrix converter applications in the power electronics field eliminate the common practice of reactive power storage in the system. Due to its universal converter applicability, the Single Phase Matrix Converter (SPMC) is among the most widely used matrix converter configurations. Operating as a universal converter means that the SPMC can be used as a frequency changer, an inverter, a rectifier, and a chopper. The SPMC topology consists of four bidirectional switches that allow reverse blocking and bidirectional current flow. This paper presents the implementation of SPMC as an AC/AC converter with passive load conditions. The output of SPMC is synthesized using the Sinusoidal Pulse Width Modulation (SPWM) technique to calculate the switch duty ratio. The modelling and simulation of SPMC are carried out using MATLAB/Simulink software, and the results are discussed. Further testing was conducted with the input generated from a point absorber wave energy converter simulated in ANSYS to validate the ability of the SPMC as an AC/AC converter model.
{"title":"Simulation of AC/ AC Converter using Single Phase Matrix Converter for Wave Energy Converter","authors":"Jariyani Burhanudin, A. S. Abu Hasim, A. M. Ishak, Syed Mohd Fairuz, S. Dardin, A. A. Azid, J. Burhanudin","doi":"10.1109/ICPEA53519.2022.9744651","DOIUrl":"https://doi.org/10.1109/ICPEA53519.2022.9744651","url":null,"abstract":"Matrix converter applications in the power electronics field eliminate the common practice of reactive power storage in the system. Due to its universal converter applicability, the Single Phase Matrix Converter (SPMC) is among the most widely used matrix converter configurations. Operating as a universal converter means that the SPMC can be used as a frequency changer, an inverter, a rectifier, and a chopper. The SPMC topology consists of four bidirectional switches that allow reverse blocking and bidirectional current flow. This paper presents the implementation of SPMC as an AC/AC converter with passive load conditions. The output of SPMC is synthesized using the Sinusoidal Pulse Width Modulation (SPWM) technique to calculate the switch duty ratio. The modelling and simulation of SPMC are carried out using MATLAB/Simulink software, and the results are discussed. Further testing was conducted with the input generated from a point absorber wave energy converter simulated in ANSYS to validate the ability of the SPMC as an AC/AC converter model.","PeriodicalId":371063,"journal":{"name":"2022 IEEE International Conference in Power Engineering Application (ICPEA)","volume":"48 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-03-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121652213","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 : 2022-03-07DOI: 10.1109/ICPEA53519.2022.9744661
M. H. Roslan, N. Azis, J. Jasni, M. A. Ab. Kadir, M. Yousof
This paper presents partial discharge (PD) modeling within a spherical cavity in solid insulation through the Finite Element Method (FEM) by using Ansys Maxwell. The model consists of an insulation material of 2 mm thickness and 5 mm radius which contain a spherical cavity with a diameter of 1.4 mm at the center. The model was used to study the influence of the PD physical processes parameter which are the PD inception field, PD extinction field, and statistical time lag due to electron generation rate on PD magnitude in terms of the PD's first discharge. The PD inception field was varied while other parameters are fixed to identify the influence on PD magnitude. The same method was implied on the PD extinction field and statistical time lag. Based on the results, the PD magnitude of the first discharge depends on the PD inception field and statistical time lag but it is slightly less dependent on the PD extinction voltage unless its value is higher than 1 kV/mm.
{"title":"The Influence of the Partial Discharge Physical Processes Parameter on Partial Discharge Magnitude of Spherical Cavity","authors":"M. H. Roslan, N. Azis, J. Jasni, M. A. Ab. Kadir, M. Yousof","doi":"10.1109/ICPEA53519.2022.9744661","DOIUrl":"https://doi.org/10.1109/ICPEA53519.2022.9744661","url":null,"abstract":"This paper presents partial discharge (PD) modeling within a spherical cavity in solid insulation through the Finite Element Method (FEM) by using Ansys Maxwell. The model consists of an insulation material of 2 mm thickness and 5 mm radius which contain a spherical cavity with a diameter of 1.4 mm at the center. The model was used to study the influence of the PD physical processes parameter which are the PD inception field, PD extinction field, and statistical time lag due to electron generation rate on PD magnitude in terms of the PD's first discharge. The PD inception field was varied while other parameters are fixed to identify the influence on PD magnitude. The same method was implied on the PD extinction field and statistical time lag. Based on the results, the PD magnitude of the first discharge depends on the PD inception field and statistical time lag but it is slightly less dependent on the PD extinction voltage unless its value is higher than 1 kV/mm.","PeriodicalId":371063,"journal":{"name":"2022 IEEE International Conference in Power Engineering Application (ICPEA)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-03-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125959901","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 : 2022-03-07DOI: 10.1109/ICPEA53519.2022.9744646
Azin Taufik, D. Johari, M.S. Azaman, F. A. Haris, M. P. Yahaya, N. Abdullah, N. Hatta, Z. A. Baharudin, M. Ismail
This paper presents lightning observation around tall structures in Kuala Lumpur. As one of the fastest growing cities in the Southeast Asia, the growth in the number of skyscrapers may influence lightning activity in the area since tall structures are known to initiate lightning. This study aims to investigate lightning events around tall structures in Kuala Lumpur by analyzing data recorded by the lightning location system (LLS). In the study, the behaviour of the ground flashes were investigated and hotspots that coincided with tall structures in the area were identified. LLS data for the year 2020 were obtained from TNB Research (TNBR) and a total of 112,946 data were analyzed. Detailed investigation within 30 km radius from Kuala Lumpur showed that most of the lightning events consisted of negative flashes (92.4%) while positive flashes only contributed 7.6%. Despite the small percentage, positive flashes produced higher geometric mean and median peak current values of 30.8 kA and 31 kA, respectively. Negative flashes, on the other hand, produced lower geometric mean and median values of 23.7 kA and 23 kA, respectively. From our dataset, the highest peak current was recorded by a negative return stroke with a value of 302 kA while a positive return stroke recorded a value of 169 kA. A heatmap generated using QGis showed that indeed there were high lightning activities around the tall structures in Kuala Lumpur. The trend of the peak currents was also seen to be increasing with structure height. The increase in the number of lightning strokes around taller structures suggests their influence on the activity of lightning around the surrounding area. Due to this, proper consideration has to be taken when designing lightning protection systems for structures with greater heights.
本文介绍了吉隆坡高层建筑周围的闪电观测。作为东南亚发展最快的城市之一，摩天大楼数量的增长可能会影响该地区的闪电活动，因为众所周知，高层建筑会引发闪电。本研究旨在通过分析闪电定位系统(LLS)记录的数据来调查吉隆坡高层建筑周围的闪电事件。在这项研究中，研究人员调查了地面闪光的行为，并确定了该地区与高层建筑相吻合的热点。2020年的LLS数据来自TNB Research (TNBR)，共分析了112,946份数据。在距吉隆坡30公里半径范围内的详细调查显示，大多数闪电事件由负闪组成(92.4%)，而正闪仅占7.6%。尽管比例很小，但正闪产生的几何平均和中位数峰值电流分别为30.8 kA和31 kA。另一方面，负闪产生较低的几何平均值和中位数，分别为23.7 kA和23 kA。从我们的数据集来看，最高峰值电流是由负回程记录的，其值为302 kA，而正回程记录的值为169 kA。使用QGis生成的热图显示，吉隆坡的高层建筑周围确实有高闪电活动。峰值电流的变化趋势也随结构高度的增加而增加。高层建筑周围雷击次数的增加表明它们对周围地区闪电活动的影响。因此，在设计较高高度结构的防雷系统时，必须适当考虑。
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