Pub Date : 2014-12-01DOI: 10.1109/PECON.2014.7062462
M. Mirzaei, J. Jasni, H. Hizam, N. Wahab, S. Mohamed
This paper presented a hybrid method to find the optimal size of the distributed generation by considering different type of renewable sources in the distribution power system. The proposed method is based on the combination of two methods like the sensitivity analysis and continues power factor method. The simulated method is done on the Matlab environment by applying in the 16-bus distribution system. The result illustrated the accurate and reliable size of the different types of the distributed generation in a power system.
{"title":"An analytical method for optimal sizing of different types of DG in a power distribution system","authors":"M. Mirzaei, J. Jasni, H. Hizam, N. Wahab, S. Mohamed","doi":"10.1109/PECON.2014.7062462","DOIUrl":"https://doi.org/10.1109/PECON.2014.7062462","url":null,"abstract":"This paper presented a hybrid method to find the optimal size of the distributed generation by considering different type of renewable sources in the distribution power system. The proposed method is based on the combination of two methods like the sensitivity analysis and continues power factor method. The simulated method is done on the Matlab environment by applying in the 16-bus distribution system. The result illustrated the accurate and reliable size of the different types of the distributed generation in a power system.","PeriodicalId":126366,"journal":{"name":"2014 IEEE International Conference on Power and Energy (PECon)","volume":"26 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129361207","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 : 2014-12-01DOI: 10.1109/PECON.2014.7062405
J. K. Wong, H. Illias, H. Mokhlis, A. Bakar
Cable terminations are known as the weak point of cross-linked polyethylene (XLPE) power cables. Therefore, power companies are constantly seeking new ways to create more effective cable termination designs. In order to improve cable termination design, it is required to understand the nature of weak points at the cable end. Partial discharge measurement is a non-destructive measurement method, which can be used to access insulation quality. Therefore, this work investigates partial discharge severity of unterminated cable ends under various conditions to observe the strongest factor that degrades the insulation quality at the cable end. Factors which determine good cable termination design may also be attained from the measurement results of this work.
{"title":"Investigation of partial discharge severity at XLPE cable without termination","authors":"J. K. Wong, H. Illias, H. Mokhlis, A. Bakar","doi":"10.1109/PECON.2014.7062405","DOIUrl":"https://doi.org/10.1109/PECON.2014.7062405","url":null,"abstract":"Cable terminations are known as the weak point of cross-linked polyethylene (XLPE) power cables. Therefore, power companies are constantly seeking new ways to create more effective cable termination designs. In order to improve cable termination design, it is required to understand the nature of weak points at the cable end. Partial discharge measurement is a non-destructive measurement method, which can be used to access insulation quality. Therefore, this work investigates partial discharge severity of unterminated cable ends under various conditions to observe the strongest factor that degrades the insulation quality at the cable end. Factors which determine good cable termination design may also be attained from the measurement results of this work.","PeriodicalId":126366,"journal":{"name":"2014 IEEE International Conference on Power and Energy (PECon)","volume":"62 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126266361","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 : 2014-12-01DOI: 10.1109/PECON.2014.7062457
Y. Maouche, L. Louze, M. Oumaamar, A. Khezzar
This paper discusses the analysis of the effect of the permeance function harmonics induced by dynamic air-gap eccentricity in squirrel cage induction machines and explains the mechanism of generation of the harmonic components in the stator current spectrum. An analytical expressions of the motor inductance have been derived using the decomposition into Fourier series of both winding function approach (WFA) and the permeance function. Experimental results have been presented to validate the analytical and simulation results.
{"title":"Analytical model of dynamic air-gap eccentricity in three-phase squirrel cage induction motor","authors":"Y. Maouche, L. Louze, M. Oumaamar, A. Khezzar","doi":"10.1109/PECON.2014.7062457","DOIUrl":"https://doi.org/10.1109/PECON.2014.7062457","url":null,"abstract":"This paper discusses the analysis of the effect of the permeance function harmonics induced by dynamic air-gap eccentricity in squirrel cage induction machines and explains the mechanism of generation of the harmonic components in the stator current spectrum. An analytical expressions of the motor inductance have been derived using the decomposition into Fourier series of both winding function approach (WFA) and the permeance function. Experimental results have been presented to validate the analytical and simulation results.","PeriodicalId":126366,"journal":{"name":"2014 IEEE International Conference on Power and Energy (PECon)","volume":"5 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132332937","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 : 2014-12-01DOI: 10.1109/PECON.2014.7062424
M. A. Abd Rahman, M. Izadi, M. A. Ab. Kadir
This paper presented the simulation results on electric field performances of medium voltage polymer type insulator while its mechanical conditions were reviewed. The purpose of this study is to investigate the electric field behaviour of 33kV polymer type insulator under different weather conditions by mean humidity and pollution. In addition, outdoor service environments of the insulator were reviewed as they are realized to have worldwide issues on degradation of polymeric material. Using 2D simulation, the electric field was found higher nearer to the end fittings whereby increased up to 38.89% under humidity and pollution. Also, the electric field behaviour along the cross section of weathersheds increased up to 661.59% under humidity and 547.30% under pollution. Meanwhile the weak points along the insulator were identified according to the magnitude of electric field strength. This research also verified the sharp edges and the thickness of the material of insulator as one of the factors that affect electric field strength.
{"title":"Influence of air humidity and contamination on electrical field of polymer insulator","authors":"M. A. Abd Rahman, M. Izadi, M. A. Ab. Kadir","doi":"10.1109/PECON.2014.7062424","DOIUrl":"https://doi.org/10.1109/PECON.2014.7062424","url":null,"abstract":"This paper presented the simulation results on electric field performances of medium voltage polymer type insulator while its mechanical conditions were reviewed. The purpose of this study is to investigate the electric field behaviour of 33kV polymer type insulator under different weather conditions by mean humidity and pollution. In addition, outdoor service environments of the insulator were reviewed as they are realized to have worldwide issues on degradation of polymeric material. Using 2D simulation, the electric field was found higher nearer to the end fittings whereby increased up to 38.89% under humidity and pollution. Also, the electric field behaviour along the cross section of weathersheds increased up to 661.59% under humidity and 547.30% under pollution. Meanwhile the weak points along the insulator were identified according to the magnitude of electric field strength. This research also verified the sharp edges and the thickness of the material of insulator as one of the factors that affect electric field strength.","PeriodicalId":126366,"journal":{"name":"2014 IEEE International Conference on Power and Energy (PECon)","volume":"13 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134367921","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 : 2014-12-01DOI: 10.1109/PECON.2014.7062421
A. Oteafy, J. Chiasson
This work presents a standstill (offline) parameter identification method for synchronous machines with dual field excitation on the d and q axes of the rotor. Such machines have applications as turbogenerators and synchronous motors. One machine with an equivalent model is the divided winding rotor synchronous generator, which is a round rotor machine that was proposed by Soper and Fagg. A methodology that utilizes elimination theory is used to develop the nonlinear parameter identification technique. Simulation results show the success of the method in finding the electric parameters of the machine using a few seconds of low voltage test signals applied to its stator terminals.
{"title":"A standstill parameter identification technique for the divided winding rotor synchronous generator","authors":"A. Oteafy, J. Chiasson","doi":"10.1109/PECON.2014.7062421","DOIUrl":"https://doi.org/10.1109/PECON.2014.7062421","url":null,"abstract":"This work presents a standstill (offline) parameter identification method for synchronous machines with dual field excitation on the d and q axes of the rotor. Such machines have applications as turbogenerators and synchronous motors. One machine with an equivalent model is the divided winding rotor synchronous generator, which is a round rotor machine that was proposed by Soper and Fagg. A methodology that utilizes elimination theory is used to develop the nonlinear parameter identification technique. Simulation results show the success of the method in finding the electric parameters of the machine using a few seconds of low voltage test signals applied to its stator terminals.","PeriodicalId":126366,"journal":{"name":"2014 IEEE International Conference on Power and Energy (PECon)","volume":"5 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130814686","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 : 2014-12-01DOI: 10.1109/PECON.2014.7062409
S. A. Gafoor, S. K. Yadav, Pasunoori Prashanth, T. Vamshi Krishna
This paper presents a Wavelet based alienation technique to detect and classify various faults on transmission line. The proposed scheme analyses the absolute values of three phase current signals over a half cycle to obtain detail coefficients. These detail coefficients of half a cycle are compared with those of previous half cycle to compute alienation coefficients which are further utilized to detect and classify the faults. The proposed technique was able to discriminate non-fault transients such as capacitance, inductance and load switching, from fault transients. The increase in the sensitivity of protection scheme, due to utilization of wavelet based detail decomposition, has been established by case studies. The proposed algorithm is tested for different locations and various types of faults. The algorithm is proved to be successful in detecting and classifying various types of faults in a half cycle.
{"title":"Transmission line protection scheme using Wavelet based alienation coefficients","authors":"S. A. Gafoor, S. K. Yadav, Pasunoori Prashanth, T. Vamshi Krishna","doi":"10.1109/PECON.2014.7062409","DOIUrl":"https://doi.org/10.1109/PECON.2014.7062409","url":null,"abstract":"This paper presents a Wavelet based alienation technique to detect and classify various faults on transmission line. The proposed scheme analyses the absolute values of three phase current signals over a half cycle to obtain detail coefficients. These detail coefficients of half a cycle are compared with those of previous half cycle to compute alienation coefficients which are further utilized to detect and classify the faults. The proposed technique was able to discriminate non-fault transients such as capacitance, inductance and load switching, from fault transients. The increase in the sensitivity of protection scheme, due to utilization of wavelet based detail decomposition, has been established by case studies. The proposed algorithm is tested for different locations and various types of faults. The algorithm is proved to be successful in detecting and classifying various types of faults in a half cycle.","PeriodicalId":126366,"journal":{"name":"2014 IEEE International Conference on Power and Energy (PECon)","volume":"17 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133713267","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 : 2014-12-01DOI: 10.1109/PECON.2014.7062425
S. Y. Teo, H. Illias, N. Mokhtar, H. Mokhlis, A. Bakar
Porcelain insulator has been slowly replaced by composite insulator in power grid nowadays. However, flashover fault still occurs on this insulator type. Under certain conditions, partial discharges may occur on the insulator and lead to a complete flashover. The flashover can cause the breakdown and damage the whole power system. Therefore, this paper reports on the flashover voltage of 11kV composite insulator under different conditions. They are pollution methods, insulator surface condition, water content, operating orientations and the ambient temperature. It was found that the flashover voltage can be improved by using 0° operating orientation angle of the insulator, at lower temperature, dry condition, less insulator surface roughness and no pollution on the insulator. Therefore, a better understanding of flashover voltage under different pollution conditions may be attained from this work.
{"title":"Flashover voltage of insulator string under various conditions","authors":"S. Y. Teo, H. Illias, N. Mokhtar, H. Mokhlis, A. Bakar","doi":"10.1109/PECON.2014.7062425","DOIUrl":"https://doi.org/10.1109/PECON.2014.7062425","url":null,"abstract":"Porcelain insulator has been slowly replaced by composite insulator in power grid nowadays. However, flashover fault still occurs on this insulator type. Under certain conditions, partial discharges may occur on the insulator and lead to a complete flashover. The flashover can cause the breakdown and damage the whole power system. Therefore, this paper reports on the flashover voltage of 11kV composite insulator under different conditions. They are pollution methods, insulator surface condition, water content, operating orientations and the ambient temperature. It was found that the flashover voltage can be improved by using 0° operating orientation angle of the insulator, at lower temperature, dry condition, less insulator surface roughness and no pollution on the insulator. Therefore, a better understanding of flashover voltage under different pollution conditions may be attained from this work.","PeriodicalId":126366,"journal":{"name":"2014 IEEE International Conference on Power and Energy (PECon)","volume":"17 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125972465","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 : 2014-12-01DOI: 10.1109/PECON.2014.7062476
M. Maghami, H. Hizam, C. Gomes
Energy and Environment are two important issues in this decade. Using the clean energy such as solar energy generation is growing around word, but with low efficiency. Many parameters from the environment affect the solar photovoltaic panel such as shadow, air pollution and dust. In some experimental setup, there is a small layer that accumulates on top of the photovoltaic (PV). In order to evaluate the effect of dust on Photovoltaic, using two Fix Flat Photovoltaic (FFP) was installed at the Universiti Putra Malaysia. One array is the “Clean array” that was cleaned regularly and other is the “Dusty array” that was not cleaned during this research. Data was collected at interval each of 30mins from 1st April to 5th December 2013 for both arrays. Power output and Energy yield for both PV arrays are considered. Findings from this research shows that overly power and energy decrease due to the dust, which accumulates on the surface. The contribution this work with other research was done is we are evaluate the power loss in tropical climate which force with many rainy days.
{"title":"Impact of dust on solar energy generation based on actual performance","authors":"M. Maghami, H. Hizam, C. Gomes","doi":"10.1109/PECON.2014.7062476","DOIUrl":"https://doi.org/10.1109/PECON.2014.7062476","url":null,"abstract":"Energy and Environment are two important issues in this decade. Using the clean energy such as solar energy generation is growing around word, but with low efficiency. Many parameters from the environment affect the solar photovoltaic panel such as shadow, air pollution and dust. In some experimental setup, there is a small layer that accumulates on top of the photovoltaic (PV). In order to evaluate the effect of dust on Photovoltaic, using two Fix Flat Photovoltaic (FFP) was installed at the Universiti Putra Malaysia. One array is the “Clean array” that was cleaned regularly and other is the “Dusty array” that was not cleaned during this research. Data was collected at interval each of 30mins from 1st April to 5th December 2013 for both arrays. Power output and Energy yield for both PV arrays are considered. Findings from this research shows that overly power and energy decrease due to the dust, which accumulates on the surface. The contribution this work with other research was done is we are evaluate the power loss in tropical climate which force with many rainy days.","PeriodicalId":126366,"journal":{"name":"2014 IEEE International Conference on Power and Energy (PECon)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130501942","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 : 2014-12-01DOI: 10.1109/PECON.2014.7062447
M. Al-Absi, U. Baroudi, K. Al-Soufi, S. Zummo
Flashover of insulators in transmission and distribution electric power systems causes a reduction of the system reliability and costly outages for the power company and their customers. In this paper, we present a system in which a wireless sensor network is used for continuous wirelessly monitoring contamination in high voltage insulators. The new system consists of different sensor nodes (e.g. humidity, temperature and dust) mounted on a dummy insulator that has to be placed close to high voltage substation or transmission line tower. The proposed approach is based on the Equivalent Salt Deposit Density (ESDD) severity method in order to check the pollution level on the insulator and to correlate with flashover voltage levels of the insulator string. In this approach, the photons measurement level (i.e. light intensity) is adopted as an indicator to the accumulated pollution level on the insulators. Extensive lab tests were carried out using different pollutants. ESDD measurements have been collected for all the pollution tests performed in the lab and a relationship between these values and the light intensity values has been established to correctly model the contamination level. Using, the established relationship between EESD and light intensity shall enable the power system control unit to accurately predict the flashover and accordingly schedule its crew to visit the site and clean these insulators.
{"title":"Flashover monitoring system using wireless sensor network","authors":"M. Al-Absi, U. Baroudi, K. Al-Soufi, S. Zummo","doi":"10.1109/PECON.2014.7062447","DOIUrl":"https://doi.org/10.1109/PECON.2014.7062447","url":null,"abstract":"Flashover of insulators in transmission and distribution electric power systems causes a reduction of the system reliability and costly outages for the power company and their customers. In this paper, we present a system in which a wireless sensor network is used for continuous wirelessly monitoring contamination in high voltage insulators. The new system consists of different sensor nodes (e.g. humidity, temperature and dust) mounted on a dummy insulator that has to be placed close to high voltage substation or transmission line tower. The proposed approach is based on the Equivalent Salt Deposit Density (ESDD) severity method in order to check the pollution level on the insulator and to correlate with flashover voltage levels of the insulator string. In this approach, the photons measurement level (i.e. light intensity) is adopted as an indicator to the accumulated pollution level on the insulators. Extensive lab tests were carried out using different pollutants. ESDD measurements have been collected for all the pollution tests performed in the lab and a relationship between these values and the light intensity values has been established to correctly model the contamination level. Using, the established relationship between EESD and light intensity shall enable the power system control unit to accurately predict the flashover and accordingly schedule its crew to visit the site and clean these insulators.","PeriodicalId":126366,"journal":{"name":"2014 IEEE International Conference on Power and Energy (PECon)","volume":"70 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115102922","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 : 2014-12-01DOI: 10.1109/PECON.2014.7062450
M.H.M. Sidek, W. Z. W. Hasan, M. A. Kadir, S. Shafie, M. Radzi, S. Ahmad, M. Marhaban
The overall objective of this study is to design and develop a portable dual-axis solar tracking system that focuses on portable and mobility purpose. This paper discusses the design, electronic control system and the algorithm based on the astronomical equation. The tracking system utilizes the GPS module and a digital compass sensor for determining the location and the heading feedback of the system respectively. Moreover, the microcontroller based tracking system is embedded with a PID controller for which will increase the PV positioning accuracy based from the feedback signal of the absolute encoder. Furthermore, this paper also analyses and compares the performance between the fixed-tilted PV panel and the developed portable solar tracking system.
{"title":"GPS based portable dual-axis solar tracking system using astronomical equation","authors":"M.H.M. Sidek, W. Z. W. Hasan, M. A. Kadir, S. Shafie, M. Radzi, S. Ahmad, M. Marhaban","doi":"10.1109/PECON.2014.7062450","DOIUrl":"https://doi.org/10.1109/PECON.2014.7062450","url":null,"abstract":"The overall objective of this study is to design and develop a portable dual-axis solar tracking system that focuses on portable and mobility purpose. This paper discusses the design, electronic control system and the algorithm based on the astronomical equation. The tracking system utilizes the GPS module and a digital compass sensor for determining the location and the heading feedback of the system respectively. Moreover, the microcontroller based tracking system is embedded with a PID controller for which will increase the PV positioning accuracy based from the feedback signal of the absolute encoder. Furthermore, this paper also analyses and compares the performance between the fixed-tilted PV panel and the developed portable solar tracking system.","PeriodicalId":126366,"journal":{"name":"2014 IEEE International Conference on Power and Energy (PECon)","volume":"71 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131276809","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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