Pub Date : 2022-12-13DOI: 10.1109/MEPCON55441.2022.10021747
S. A. Mohammed, L. Nasrat, A. Shaheen
Silicone polymers inherently have good electrical insulating qualities. It is non-conductive due to its chemical nature and when combined with suitable fillers and additives it is used to produce rubber for a variety of electrical insulation applications. Inorganic fillers have attracted wide attention to improve the electrical properties of polymer insulating materials. In order to improve the electrical performance of polymeric silicone rubber insulators used in high-voltage transmission lines, micron- and nano-sized inorganic fillers have been added to the silicone rubber matrix. To improve the electrical properties of silicone rubber, an aluminum oxide (Al2O3) filler was added. In this paper, silicone rubber (SIR) composite samples were prepared by mixing nano-Al2O3 with content of 1, 3, 5 and 7 wt%. The dielectric strength of the compounds is tested under various conditions such as dry, wet, humid low salinity and wet high salinity conditions. The optimum concentration of Al2O3 nano-filler that could improve the dielectric strength of SIR was estimated using Hybrid Gray Wolf and Cuckoo Search Optimization Algorithm (GWCSOA) technology. The results indicate that the electrical performance of the nanocomposites increases with increasing filler concentration.
{"title":"Improvement of Nanodieleetrics for Power Cables","authors":"S. A. Mohammed, L. Nasrat, A. Shaheen","doi":"10.1109/MEPCON55441.2022.10021747","DOIUrl":"https://doi.org/10.1109/MEPCON55441.2022.10021747","url":null,"abstract":"Silicone polymers inherently have good electrical insulating qualities. It is non-conductive due to its chemical nature and when combined with suitable fillers and additives it is used to produce rubber for a variety of electrical insulation applications. Inorganic fillers have attracted wide attention to improve the electrical properties of polymer insulating materials. In order to improve the electrical performance of polymeric silicone rubber insulators used in high-voltage transmission lines, micron- and nano-sized inorganic fillers have been added to the silicone rubber matrix. To improve the electrical properties of silicone rubber, an aluminum oxide (Al2O3) filler was added. In this paper, silicone rubber (SIR) composite samples were prepared by mixing nano-Al2O3 with content of 1, 3, 5 and 7 wt%. The dielectric strength of the compounds is tested under various conditions such as dry, wet, humid low salinity and wet high salinity conditions. The optimum concentration of Al2O3 nano-filler that could improve the dielectric strength of SIR was estimated using Hybrid Gray Wolf and Cuckoo Search Optimization Algorithm (GWCSOA) technology. The results indicate that the electrical performance of the nanocomposites increases with increasing filler concentration.","PeriodicalId":174878,"journal":{"name":"2022 23rd International Middle East Power Systems Conference (MEPCON)","volume":"10 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-12-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126610476","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 : 2022-12-13DOI: 10.1109/MEPCON55441.2022.10021709
Eman A. Awad, E. Badran
This paper investigates the effect of using transient recovery voltage (TRV)responsive VCB model in renewable energy systems of different transmission nature. The VCB model takes into account TRVreigniting operational feature. In this study, theVCB model is subjected to a diverse study for its use in renewable energy systems of different nature. At first, the VCB model is used to de-energized a series of wind turbines at an offshore wind farm connected to the onshore with a submarine cable. Then, the VCB is integrated at a hybrid microgrid powered by PV, wind turbines and hydro generation systems with a transmission system consisting only of overhead lines. A tool in the Alternating transient program (A$T$P/EM$T$P) software is represented using the Model language to simulate the VCB model. ATP/EMTP is used to simulate the tested systems. The results conclude that the represented VCB model is recommended for the switching studies as its sensible to TRV reigniting operational featurerenewable energy resources transmission systems
{"title":"Reigniting Model of VCB for Renewable Energy ResourcesTransmission Systems","authors":"Eman A. Awad, E. Badran","doi":"10.1109/MEPCON55441.2022.10021709","DOIUrl":"https://doi.org/10.1109/MEPCON55441.2022.10021709","url":null,"abstract":"This paper investigates the effect of using transient recovery voltage (TRV)responsive VCB model in renewable energy systems of different transmission nature. The VCB model takes into account TRVreigniting operational feature. In this study, theVCB model is subjected to a diverse study for its use in renewable energy systems of different nature. At first, the VCB model is used to de-energized a series of wind turbines at an offshore wind farm connected to the onshore with a submarine cable. Then, the VCB is integrated at a hybrid microgrid powered by PV, wind turbines and hydro generation systems with a transmission system consisting only of overhead lines. A tool in the Alternating transient program (A$T$P/EM$T$P) software is represented using the Model language to simulate the VCB model. ATP/EMTP is used to simulate the tested systems. The results conclude that the represented VCB model is recommended for the switching studies as its sensible to TRV reigniting operational featurerenewable energy resources transmission systems","PeriodicalId":174878,"journal":{"name":"2022 23rd International Middle East Power Systems Conference (MEPCON)","volume":"22 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-12-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126824295","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 : 2022-12-13DOI: 10.1109/MEPCON55441.2022.10021704
Mahmoud A. Badwey, N. Abbasy, G. Eldallal
Wireless power transfer (WPT) is a technique that permits the power to transfer wirelessly through time-changing magnetic or electric fields that represent a transfer media. WPT could be assorted into two main categories; capacitive power transfer (CPT) and inductive power transfer (IPT). Combining the inductive and the capacitive topologies has been resulted in a third topology known as hybrid wireless power transfer (HWPT). HWPT possesses the ability to transfer high amounts of power over large vertical gaps and over different horizontal misalignments with high efficiency. This paper extends the results of a 10 $mathbf{kW}$ HWPT system, newly developed by the same authors. The magnetic and the electric fields' distributions are both presented and studied. These results represent a key parameter in determining the safety exposure limit of both fields on the nearby humans. The obtained fields' values play an important role in selecting the proper shields to avoid fields' leakage to the surroundings. The $3mathrm{D}$ structure of the proposed model and the resultant fields are also simulated using Maxwell-3D simulation tool. The results of the proposed model prove an enhancement in the field distribution among the transmitter and the receiver with a minimum leakage to the surrounding as a result of using two different types of shields. Moreover, the system preserves its coupling fields for misalignment distances exceeding 500 mm in all directions. The developed HPWT system proves better performance under different misalignment conditions than the published IPT and the CPT systems separately
{"title":"Extended Results for a Developed 10 kW LC-Compensated Hybrid Wireless Power Transfer System","authors":"Mahmoud A. Badwey, N. Abbasy, G. Eldallal","doi":"10.1109/MEPCON55441.2022.10021704","DOIUrl":"https://doi.org/10.1109/MEPCON55441.2022.10021704","url":null,"abstract":"Wireless power transfer (WPT) is a technique that permits the power to transfer wirelessly through time-changing magnetic or electric fields that represent a transfer media. WPT could be assorted into two main categories; capacitive power transfer (CPT) and inductive power transfer (IPT). Combining the inductive and the capacitive topologies has been resulted in a third topology known as hybrid wireless power transfer (HWPT). HWPT possesses the ability to transfer high amounts of power over large vertical gaps and over different horizontal misalignments with high efficiency. This paper extends the results of a 10 $mathbf{kW}$ HWPT system, newly developed by the same authors. The magnetic and the electric fields' distributions are both presented and studied. These results represent a key parameter in determining the safety exposure limit of both fields on the nearby humans. The obtained fields' values play an important role in selecting the proper shields to avoid fields' leakage to the surroundings. The $3mathrm{D}$ structure of the proposed model and the resultant fields are also simulated using Maxwell-3D simulation tool. The results of the proposed model prove an enhancement in the field distribution among the transmitter and the receiver with a minimum leakage to the surrounding as a result of using two different types of shields. Moreover, the system preserves its coupling fields for misalignment distances exceeding 500 mm in all directions. The developed HPWT system proves better performance under different misalignment conditions than the published IPT and the CPT systems separately","PeriodicalId":174878,"journal":{"name":"2022 23rd International Middle East Power Systems Conference (MEPCON)","volume":"28 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-12-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126946825","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 : 2022-12-13DOI: 10.1109/MEPCON55441.2022.10021790
M. A. Kabeel, M. M. Eladany, A. A. ElDesouky
The increased deployment of renewable energy sources (RES) as distributed generation (DG) in power grids brings a challenge to the protection scheme. Due to different penetration levels of RES during a day, the fault currents at the same point of the microgrid (MG) vary significantly. Since, the MG presents two different levels of fault current according to grid-tied mode or islanded mode. Consequently, the conventional overcurrent coordination protection schemes must be developed. This paper proposes an improved centralized protection strategy for AC MG with bulky DG penetration. The proposed strategy depends on communication-based overcurrent relays with a centralized unit using an artificial neural network (ANN) with symmetrical components as feature extraction. The proposed algorithm provides fast fault detection and fault location. The evaluation of the proposed strategy is validated on IEEE 9-bus system using Matlab/Simulink software. The system is examined under different operating conditions of MG and different fault types at different fault resistance and achieved remarkable results.
{"title":"A Centralized Protection Scheme for Microgrids with Artificial Neural Network-Based on Fault Detection and Location","authors":"M. A. Kabeel, M. M. Eladany, A. A. ElDesouky","doi":"10.1109/MEPCON55441.2022.10021790","DOIUrl":"https://doi.org/10.1109/MEPCON55441.2022.10021790","url":null,"abstract":"The increased deployment of renewable energy sources (RES) as distributed generation (DG) in power grids brings a challenge to the protection scheme. Due to different penetration levels of RES during a day, the fault currents at the same point of the microgrid (MG) vary significantly. Since, the MG presents two different levels of fault current according to grid-tied mode or islanded mode. Consequently, the conventional overcurrent coordination protection schemes must be developed. This paper proposes an improved centralized protection strategy for AC MG with bulky DG penetration. The proposed strategy depends on communication-based overcurrent relays with a centralized unit using an artificial neural network (ANN) with symmetrical components as feature extraction. The proposed algorithm provides fast fault detection and fault location. The evaluation of the proposed strategy is validated on IEEE 9-bus system using Matlab/Simulink software. The system is examined under different operating conditions of MG and different fault types at different fault resistance and achieved remarkable results.","PeriodicalId":174878,"journal":{"name":"2022 23rd International Middle East Power Systems Conference (MEPCON)","volume":"72 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-12-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114456326","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 : 2022-12-13DOI: 10.1109/MEPCON55441.2022.10021692
Ghada Abdulnasser, Abdelfatah Ali, M. Shaaban, Essam E. M. Mohamed
Confronted with climate change, environmental pollution, and energy crisis, energy hubs (EH) are promising multi-carrier systems that could lead to a flexible, reliable, and clean operation. EH could be conceptualized as an aggregator for energy generation resources, storage, and coupling networks that aim to satisfy electrical, thermal, and cooling demands. This study investigates the optimal day-ahead scheduling of a multi-carrier EH system that incorporates renewable energy sources (RES), large-scale compressed air energy storage (CAES), battery energy storage (BESS), plug-in electric vehicle (PEV), and thermal energy storage (TES). The proposed model is a stochastic multi-objective framework that minimizes the operation cost and the emission generated. The effectiveness of the proposed stochastic framework for optimal day-ahead scheduling has been shown based on simulation findings and results.
{"title":"Optimal stochastic day-ahead scheduling of multi-carrier energy hub integrated with plug-in electric vehicles","authors":"Ghada Abdulnasser, Abdelfatah Ali, M. Shaaban, Essam E. M. Mohamed","doi":"10.1109/MEPCON55441.2022.10021692","DOIUrl":"https://doi.org/10.1109/MEPCON55441.2022.10021692","url":null,"abstract":"Confronted with climate change, environmental pollution, and energy crisis, energy hubs (EH) are promising multi-carrier systems that could lead to a flexible, reliable, and clean operation. EH could be conceptualized as an aggregator for energy generation resources, storage, and coupling networks that aim to satisfy electrical, thermal, and cooling demands. This study investigates the optimal day-ahead scheduling of a multi-carrier EH system that incorporates renewable energy sources (RES), large-scale compressed air energy storage (CAES), battery energy storage (BESS), plug-in electric vehicle (PEV), and thermal energy storage (TES). The proposed model is a stochastic multi-objective framework that minimizes the operation cost and the emission generated. The effectiveness of the proposed stochastic framework for optimal day-ahead scheduling has been shown based on simulation findings and results.","PeriodicalId":174878,"journal":{"name":"2022 23rd International Middle East Power Systems Conference (MEPCON)","volume":"11 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-12-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129836444","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 : 2022-12-13DOI: 10.1109/MEPCON55441.2022.10041865
Jun-Hyeok Han, Il-Song Kim
The unified modeling of the TLB (Three Level Boost) converter and its design of the double loop controller are presented in this paper. Since the TLB converter has two capacitors and one inductor, the state space modeling has 3 state variables in the previous research and publications. Also, the TLB converter has two operational modes depending on duty ratio boundary of 0.5. Due to this, complex calculations are required for controller design. A simple state averaging equations using 2 state variables are presented in this paper, unlike the previous studies which used 3 state variables. The analysis has been conducted for continuous conduction mode (CCM) in two different modes of TLB converter and concluded that the transfer functions of each mode are identical to both modes. The controller has been designed for the double loop control system using unified model. The MATLAB and PSIM simulation have been performed to verify the effectiveness of the proposed controller design. The suggested method is simple and easy to apply to real system applications.
{"title":"The Controller Design of Three-Level Boost Converter using Unified Modeling Approach","authors":"Jun-Hyeok Han, Il-Song Kim","doi":"10.1109/MEPCON55441.2022.10041865","DOIUrl":"https://doi.org/10.1109/MEPCON55441.2022.10041865","url":null,"abstract":"The unified modeling of the TLB (Three Level Boost) converter and its design of the double loop controller are presented in this paper. Since the TLB converter has two capacitors and one inductor, the state space modeling has 3 state variables in the previous research and publications. Also, the TLB converter has two operational modes depending on duty ratio boundary of 0.5. Due to this, complex calculations are required for controller design. A simple state averaging equations using 2 state variables are presented in this paper, unlike the previous studies which used 3 state variables. The analysis has been conducted for continuous conduction mode (CCM) in two different modes of TLB converter and concluded that the transfer functions of each mode are identical to both modes. The controller has been designed for the double loop control system using unified model. The MATLAB and PSIM simulation have been performed to verify the effectiveness of the proposed controller design. The suggested method is simple and easy to apply to real system applications.","PeriodicalId":174878,"journal":{"name":"2022 23rd International Middle East Power Systems Conference (MEPCON)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-12-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128692351","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 : 2022-12-13DOI: 10.1109/MEPCON55441.2022.10021808
Abdelrahman A. Othman, Hamdy Shatla, M. Hamdy
This paper represents a comparative study of autotuned proportional-integral-derivative (PID) controller based on different sliding mode control (SMC) schemes for the DC motor speed control such as traditional SMC, fuzzy SMC (Fuzzy-SMC), fuzzy terminal SMC (Fuzzy-TSMC) and fuzzy fast terminal SMC (Fuzzy-FTSMC) schemes to treat uncertainties existing in the DC motor model in practical validation. The DC motor have little change in its parameters, in addition, surrounding conditions vary from one time to another, this makes a very difficult to choose an appropriate controller, so that the researchers resort to using an adaptive controller to control the DC motor to improve the performance and increase the stability against the uncertainties. The auto tuned PID controller automatically compensates for variations in system dynamics by adjusting the controller characteristics so that the overall system performance remains the same, or rather maintained at optimum level. The experimental results were obtained to verify the applicability and effectiveness of the proposed control scheme against external disturbance and model uncertainties with a comparative study.
{"title":"A Comparative Study of Auto-tuned PID Controller based on Different SMC Schemes for a DC Motor Speed Control: Practical Validation","authors":"Abdelrahman A. Othman, Hamdy Shatla, M. Hamdy","doi":"10.1109/MEPCON55441.2022.10021808","DOIUrl":"https://doi.org/10.1109/MEPCON55441.2022.10021808","url":null,"abstract":"This paper represents a comparative study of autotuned proportional-integral-derivative (PID) controller based on different sliding mode control (SMC) schemes for the DC motor speed control such as traditional SMC, fuzzy SMC (Fuzzy-SMC), fuzzy terminal SMC (Fuzzy-TSMC) and fuzzy fast terminal SMC (Fuzzy-FTSMC) schemes to treat uncertainties existing in the DC motor model in practical validation. The DC motor have little change in its parameters, in addition, surrounding conditions vary from one time to another, this makes a very difficult to choose an appropriate controller, so that the researchers resort to using an adaptive controller to control the DC motor to improve the performance and increase the stability against the uncertainties. The auto tuned PID controller automatically compensates for variations in system dynamics by adjusting the controller characteristics so that the overall system performance remains the same, or rather maintained at optimum level. The experimental results were obtained to verify the applicability and effectiveness of the proposed control scheme against external disturbance and model uncertainties with a comparative study.","PeriodicalId":174878,"journal":{"name":"2022 23rd International Middle East Power Systems Conference (MEPCON)","volume":"6 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-12-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128523536","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 : 2022-12-13DOI: 10.1109/MEPCON55441.2022.10021740
M. A. Khettat, K. Hamiche, R. Morvany, C. Annoepel, A. Omara
This paper presents a simplified sensorless scalar control algorithm of a permanent magnet synchronous motor (PMSM) for cost-effective automotive applications. Such a simple and low-cost control algorithm could be used in an engine-cooling fan (ECF) system to provide a competitive solution to the automotive market. Although field-oriented control (FOC) algorithm has higher performance, the computational burden results in higher-priced microcontrollers with higher specifications. Consequently, some design constraints should be considered in order to achieve reasonable motor control system performance at a lower cost. The proposed control algorithm computes the motor position based on the phase and dc-link voltages. Furthermore, the expected motor position is calculated using the reference motor speed, the amplitude of the voltage vector applied, and the battery current. The difference between the calculated and expected motor positions is then used to compute the precise rotor position. The appropriate voltage vector is then applied to the motor terminals using space vector pulse width modulation (SVPWM). Both simulation and experimental results are presented to validate the performance of the proposed control algorithm.
{"title":"Low-Cost Sensorless Scalar Control of a Brushless Motor for Automotive Fan System Application","authors":"M. A. Khettat, K. Hamiche, R. Morvany, C. Annoepel, A. Omara","doi":"10.1109/MEPCON55441.2022.10021740","DOIUrl":"https://doi.org/10.1109/MEPCON55441.2022.10021740","url":null,"abstract":"This paper presents a simplified sensorless scalar control algorithm of a permanent magnet synchronous motor (PMSM) for cost-effective automotive applications. Such a simple and low-cost control algorithm could be used in an engine-cooling fan (ECF) system to provide a competitive solution to the automotive market. Although field-oriented control (FOC) algorithm has higher performance, the computational burden results in higher-priced microcontrollers with higher specifications. Consequently, some design constraints should be considered in order to achieve reasonable motor control system performance at a lower cost. The proposed control algorithm computes the motor position based on the phase and dc-link voltages. Furthermore, the expected motor position is calculated using the reference motor speed, the amplitude of the voltage vector applied, and the battery current. The difference between the calculated and expected motor positions is then used to compute the precise rotor position. The appropriate voltage vector is then applied to the motor terminals using space vector pulse width modulation (SVPWM). Both simulation and experimental results are presented to validate the performance of the proposed control algorithm.","PeriodicalId":174878,"journal":{"name":"2022 23rd International Middle East Power Systems Conference (MEPCON)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-12-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130564636","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 : 2022-12-13DOI: 10.1109/MEPCON55441.2022.10021716
A. Taha, Ahdab Elmorshdy, A. Emam, M. Samy
This research aims to calculate the optimal dimension between adjacent EHV lines in Egyptian grid. The paper presents three EHV power lines. The primary two lines have an identical dimension with a potential of 220 kV, a double circuit, and two bundles while the secondary line is single circuit of five hundred kilo voltages and three bundles. The magnetic field at the datum level for the presented lines is calculated by utilizing the current simulation technique (CST). Three different optimization techniques are utilized to acquire the optimum dimension between the presented power lines; these are the Harmony Search Technique (HST), the Particulate Swarm Optimization (PSO), and the Firefly Technique (FT). Varying the sequence of every line and the spacing between them influences the final field values of the presented lines. The consequences show that the harmony search technique is the best comparing the other techniques.
{"title":"Optimum Spacing at Precise Magnetic field Among Power Lines in Egyptian Utility Applying Efficient Optimization Techniques","authors":"A. Taha, Ahdab Elmorshdy, A. Emam, M. Samy","doi":"10.1109/MEPCON55441.2022.10021716","DOIUrl":"https://doi.org/10.1109/MEPCON55441.2022.10021716","url":null,"abstract":"This research aims to calculate the optimal dimension between adjacent EHV lines in Egyptian grid. The paper presents three EHV power lines. The primary two lines have an identical dimension with a potential of 220 kV, a double circuit, and two bundles while the secondary line is single circuit of five hundred kilo voltages and three bundles. The magnetic field at the datum level for the presented lines is calculated by utilizing the current simulation technique (CST). Three different optimization techniques are utilized to acquire the optimum dimension between the presented power lines; these are the Harmony Search Technique (HST), the Particulate Swarm Optimization (PSO), and the Firefly Technique (FT). Varying the sequence of every line and the spacing between them influences the final field values of the presented lines. The consequences show that the harmony search technique is the best comparing the other techniques.","PeriodicalId":174878,"journal":{"name":"2022 23rd International Middle East Power Systems Conference (MEPCON)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-12-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130116692","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 : 2022-12-13DOI: 10.1109/MEPCON55441.2022.10021761
M. Darwish, Mohamed H. A. Hassan, N. Abdel-Gawad, D. Mansour
The condition assessment of power transformers by evaluating the state of their insulating system is of great importance according to the electrical utilities. Since, as early as the insulation deterioration is detected, the probability of a sudden system outage is significantly reduced. Regarding that, there are several methods through which the transformer condition can be determined. Recently, the utilization of optical spectroscopy techniques in condition monitoring based on oil quality analysis has attracted attention in many research papers. Therefore, the contribution of this paper is to check the reliability of estimating the transformer's Health index (HI) percentage based on the optical spectroscopy techniques. So, pure mineral oil samples were thermally aged in the laboratory for various ageing durations. Then, all of them were examined by ultraviolet-visible (UV-Vis) spectroscopy for determining the dissolved decay products (DDP) in each sample. After that, the HI percentages were estimated for the transformers simulated by these aged samples according to their DDP values. In the final analysis, this optical method has proven its potential in being a superior alternative to conventional techniques in estimating the transformer's HI percentage.
{"title":"A New Method for Estimating Transformer Health Index Based on Ultraviolet-Visible Spectroscopy","authors":"M. Darwish, Mohamed H. A. Hassan, N. Abdel-Gawad, D. Mansour","doi":"10.1109/MEPCON55441.2022.10021761","DOIUrl":"https://doi.org/10.1109/MEPCON55441.2022.10021761","url":null,"abstract":"The condition assessment of power transformers by evaluating the state of their insulating system is of great importance according to the electrical utilities. Since, as early as the insulation deterioration is detected, the probability of a sudden system outage is significantly reduced. Regarding that, there are several methods through which the transformer condition can be determined. Recently, the utilization of optical spectroscopy techniques in condition monitoring based on oil quality analysis has attracted attention in many research papers. Therefore, the contribution of this paper is to check the reliability of estimating the transformer's Health index (HI) percentage based on the optical spectroscopy techniques. So, pure mineral oil samples were thermally aged in the laboratory for various ageing durations. Then, all of them were examined by ultraviolet-visible (UV-Vis) spectroscopy for determining the dissolved decay products (DDP) in each sample. After that, the HI percentages were estimated for the transformers simulated by these aged samples according to their DDP values. In the final analysis, this optical method has proven its potential in being a superior alternative to conventional techniques in estimating the transformer's HI percentage.","PeriodicalId":174878,"journal":{"name":"2022 23rd International Middle East Power Systems Conference (MEPCON)","volume":"45 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-12-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123937984","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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