Pub Date : 2019-07-01DOI: 10.1109/ICEAST.2019.8802531
Thanadol Tiengthong, Chanidaphar Sanguanpuak, Khamphoui Southisombat, S. Promwong
Partial discharge localization in power transformer is very important. A suitable evaluation method is one of the most critical part in order to find the exactly location of partial discharge. In this paper, an ultra-high frequency partial discharge localization is introduced. Weighted centroid method is one of a suitable method to evaluate the localization in partial discharge localization as well as other wireless localization system. There are many limitation of place to install the antenna in power transformer. The proper antenna placing is very important issue because improper location will affect the accuracy of partial discharge localization. The experiment of partial discharge measurement is carried out on a power transformer model from tesla power company. The purposed method used weighted centroid with received signal strength to evaluation the partial discharge in power transformer. The results show average value of received signal strength at each measurement position and the distance error of partial discharge location with weighted centroid method. The benefits of this method is useful to evaluate the partial discharge in power transformer.
{"title":"Evaluation of Partial Discharge Localization in Power Transformer with Weighted Centroid Method","authors":"Thanadol Tiengthong, Chanidaphar Sanguanpuak, Khamphoui Southisombat, S. Promwong","doi":"10.1109/ICEAST.2019.8802531","DOIUrl":"https://doi.org/10.1109/ICEAST.2019.8802531","url":null,"abstract":"Partial discharge localization in power transformer is very important. A suitable evaluation method is one of the most critical part in order to find the exactly location of partial discharge. In this paper, an ultra-high frequency partial discharge localization is introduced. Weighted centroid method is one of a suitable method to evaluate the localization in partial discharge localization as well as other wireless localization system. There are many limitation of place to install the antenna in power transformer. The proper antenna placing is very important issue because improper location will affect the accuracy of partial discharge localization. The experiment of partial discharge measurement is carried out on a power transformer model from tesla power company. The purposed method used weighted centroid with received signal strength to evaluation the partial discharge in power transformer. The results show average value of received signal strength at each measurement position and the distance error of partial discharge location with weighted centroid method. The benefits of this method is useful to evaluate the partial discharge in power transformer.","PeriodicalId":188498,"journal":{"name":"2019 5th International Conference on Engineering, Applied Sciences and Technology (ICEAST)","volume":"65 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126832875","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 : 2019-07-01DOI: 10.1109/ICEAST.2019.8802585
Thongterm Chunsangnetr, S. Chivapreecha
The propose of this paper is to improve the performance of Passive Bistatic Radar. The process of developed model has three steps. Firstly, the integration of the designed Passive Bistatic Radar algorithm such as coherent receiver USRP B-210, Least Mean Square (LMS) adaptive filter for noise cancellation, cross correlation for comparing similarity of two series signals and the result display on time scope for range and velocity of the targets. Secondly, the test on the overall system with the simulation targets in real time environment. Thirdly, the evaluation on the result of simulation for the range and velocity of the targets. The result of this experiment is more stable because of better synchronization receiver, noise cancellation in designed LMS which is close to the LMS simulink block, range and velocity from cross correlation for comparing similarity of the signals appear correctly. Conclusion, the simulations show that the proposed algorithms improve the performance of Passive Bistatic Radar.
{"title":"Modeling and Simulation in Passive Bistatic Radar for Detecting Target Range and Velocity Application to USRP B-210 SDR","authors":"Thongterm Chunsangnetr, S. Chivapreecha","doi":"10.1109/ICEAST.2019.8802585","DOIUrl":"https://doi.org/10.1109/ICEAST.2019.8802585","url":null,"abstract":"The propose of this paper is to improve the performance of Passive Bistatic Radar. The process of developed model has three steps. Firstly, the integration of the designed Passive Bistatic Radar algorithm such as coherent receiver USRP B-210, Least Mean Square (LMS) adaptive filter for noise cancellation, cross correlation for comparing similarity of two series signals and the result display on time scope for range and velocity of the targets. Secondly, the test on the overall system with the simulation targets in real time environment. Thirdly, the evaluation on the result of simulation for the range and velocity of the targets. The result of this experiment is more stable because of better synchronization receiver, noise cancellation in designed LMS which is close to the LMS simulink block, range and velocity from cross correlation for comparing similarity of the signals appear correctly. Conclusion, the simulations show that the proposed algorithms improve the performance of Passive Bistatic Radar.","PeriodicalId":188498,"journal":{"name":"2019 5th International Conference on Engineering, Applied Sciences and Technology (ICEAST)","volume":"9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121770047","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 : 2019-07-01DOI: 10.1109/ICEAST.2019.8802605
C. Vongchumyen, Sarayuth Torthitithum, Jirachaya Khamsopa, P. Watanachaturaporn
Home appliances-controlled platform with HomeKit application is a platform that allows users to control general appliances via HomeKit, which is an application from Apple on any device running iOS10 or later. The platform is the communication medium between application and appliances. The appliances do not need to be manufactured by Apple since they are expensive and have to put an effort in case the customer want to buy it. The platform is capable of receiving and transferring data to a HomeKit application for data processing, then transmits signal back to control the operation of the appliances. Within the platform, there is a section that acts as a communication server for the HomeKit application which is like a direct Apple server. In addition to receiving and sending data from the HomeKit application, the platform also has an automatic control that is controlled by the reading sensor contained in each platform comparing the threshold values, user defined. Each platform has different sensors based on their operations and can control only one type of appliance because each type of control uses different signal, the control must be unique, matching the type of appliances and the form of command in different manufacturers.
{"title":"Home Appliances-Controlled Platform with HomeKit Application","authors":"C. Vongchumyen, Sarayuth Torthitithum, Jirachaya Khamsopa, P. Watanachaturaporn","doi":"10.1109/ICEAST.2019.8802605","DOIUrl":"https://doi.org/10.1109/ICEAST.2019.8802605","url":null,"abstract":"Home appliances-controlled platform with HomeKit application is a platform that allows users to control general appliances via HomeKit, which is an application from Apple on any device running iOS10 or later. The platform is the communication medium between application and appliances. The appliances do not need to be manufactured by Apple since they are expensive and have to put an effort in case the customer want to buy it. The platform is capable of receiving and transferring data to a HomeKit application for data processing, then transmits signal back to control the operation of the appliances. Within the platform, there is a section that acts as a communication server for the HomeKit application which is like a direct Apple server. In addition to receiving and sending data from the HomeKit application, the platform also has an automatic control that is controlled by the reading sensor contained in each platform comparing the threshold values, user defined. Each platform has different sensors based on their operations and can control only one type of appliance because each type of control uses different signal, the control must be unique, matching the type of appliances and the form of command in different manufacturers.","PeriodicalId":188498,"journal":{"name":"2019 5th International Conference on Engineering, Applied Sciences and Technology (ICEAST)","volume":"12 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133554209","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 : 2019-07-01DOI: 10.1109/ICEAST.2019.8802583
Athasart Narkthewan, Noppadol Maneerat
Diabetic retinopathy (DR) is leading to cause of blood clot stimulating the formation of abnormal new blood vessels. hemorrhage and protein secretion from blood vessels to retinal tissue. The retinal damage causes the loss of sight thus the localization of Optic Disc is necessary for analysis of the abnormal retinal image. However, the data located at the Optic Disc image are similar to Hard Exudates in the retinal image. Therefore, the aim of the present study is to detect Optic Disc using the technique of background removal. The principle of image processing is also applied for the retinal image. The image data from Fundus camera are recorded in RGB color model separated into 3 channels: red, green and blue channel. The data of all channels are evaluated by the preprocessing algorithm to make a more clear appearance of Optic Disc. Subsequently, the preprocessing image is analyzed by iterative background removal using entropy evaluation of the image data. Finally., the variance analysis of data intensity is performed in both the horizontal and vertical axis to determine the localization and size of Optic Disc. The result shows that the accuracy of localization and size of Optic Disc is approximately 98%. It indicates that this method is useful for retinal image analysis of diabetic retinopathy.
{"title":"Automatic Localization of Optic Disc in Fundus Image Using Iterative Background Removal","authors":"Athasart Narkthewan, Noppadol Maneerat","doi":"10.1109/ICEAST.2019.8802583","DOIUrl":"https://doi.org/10.1109/ICEAST.2019.8802583","url":null,"abstract":"Diabetic retinopathy (DR) is leading to cause of blood clot stimulating the formation of abnormal new blood vessels. hemorrhage and protein secretion from blood vessels to retinal tissue. The retinal damage causes the loss of sight thus the localization of Optic Disc is necessary for analysis of the abnormal retinal image. However, the data located at the Optic Disc image are similar to Hard Exudates in the retinal image. Therefore, the aim of the present study is to detect Optic Disc using the technique of background removal. The principle of image processing is also applied for the retinal image. The image data from Fundus camera are recorded in RGB color model separated into 3 channels: red, green and blue channel. The data of all channels are evaluated by the preprocessing algorithm to make a more clear appearance of Optic Disc. Subsequently, the preprocessing image is analyzed by iterative background removal using entropy evaluation of the image data. Finally., the variance analysis of data intensity is performed in both the horizontal and vertical axis to determine the localization and size of Optic Disc. The result shows that the accuracy of localization and size of Optic Disc is approximately 98%. It indicates that this method is useful for retinal image analysis of diabetic retinopathy.","PeriodicalId":188498,"journal":{"name":"2019 5th International Conference on Engineering, Applied Sciences and Technology (ICEAST)","volume":"24 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131604841","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 : 2019-07-01DOI: 10.1109/ICEAST.2019.8802552
D. Leng, S. Polmai
The inverter-based distributed generator (DG) plays a major role to solve the worldwide energy demand increasing and the environmental concern. The DG which controls by traditionally grid-connected current control confront some problems such as lacking the grid-forming ability and inertia. Therefore, the DG could not operate in standalone, and the DG's penetration rate is limited. To address these issues, the control strategy which imitates the synchronous's generator characteristic called droop control and virtual synchronous generator (VSG) are proposed recently. Seeing the potential of both control; this paper aims to investigate the dynamic performance of modified droop control and VSG. A simulation model of parallel DGs supply to a group of the load in the form of a standalone microgrid is implemented in MATLAB/Simulink. Two case studies such as power-sharing and load transient are carried out. The results have shown that VSG provides the outperform compare to the modified droop control when a large load transition is applied.
{"title":"Transient Respond Comparison Between Modified Droop Control and Virtual Synchronous Generator in Standalone Microgrid","authors":"D. Leng, S. Polmai","doi":"10.1109/ICEAST.2019.8802552","DOIUrl":"https://doi.org/10.1109/ICEAST.2019.8802552","url":null,"abstract":"The inverter-based distributed generator (DG) plays a major role to solve the worldwide energy demand increasing and the environmental concern. The DG which controls by traditionally grid-connected current control confront some problems such as lacking the grid-forming ability and inertia. Therefore, the DG could not operate in standalone, and the DG's penetration rate is limited. To address these issues, the control strategy which imitates the synchronous's generator characteristic called droop control and virtual synchronous generator (VSG) are proposed recently. Seeing the potential of both control; this paper aims to investigate the dynamic performance of modified droop control and VSG. A simulation model of parallel DGs supply to a group of the load in the form of a standalone microgrid is implemented in MATLAB/Simulink. Two case studies such as power-sharing and load transient are carried out. The results have shown that VSG provides the outperform compare to the modified droop control when a large load transition is applied.","PeriodicalId":188498,"journal":{"name":"2019 5th International Conference on Engineering, Applied Sciences and Technology (ICEAST)","volume":"31 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127482917","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 : 2019-07-01DOI: 10.1109/ICEAST.2019.8802544
Sutipong Sutipitakwong, Pornsuree Jamsri
This tool, Satsearchtory, was created to aid users and provide an opportunity for easy searching. Users are able to use this tool to specifically search for an item or product whether a product is a rare item or a regular item. This tool will provide an online tool based off search engines to bring accurate information to the user. It aims to provide accurate results with satisfaction guaranteed. Search engines keywords and phrases aren't able to provide a 100% satisfactory result. However, this tool will raise the percentage of satisfaction.
{"title":"SATSEARCHTORY: Search Tool That Guarantees Satisfaction in Your Searches","authors":"Sutipong Sutipitakwong, Pornsuree Jamsri","doi":"10.1109/ICEAST.2019.8802544","DOIUrl":"https://doi.org/10.1109/ICEAST.2019.8802544","url":null,"abstract":"This tool, Satsearchtory, was created to aid users and provide an opportunity for easy searching. Users are able to use this tool to specifically search for an item or product whether a product is a rare item or a regular item. This tool will provide an online tool based off search engines to bring accurate information to the user. It aims to provide accurate results with satisfaction guaranteed. Search engines keywords and phrases aren't able to provide a 100% satisfactory result. However, this tool will raise the percentage of satisfaction.","PeriodicalId":188498,"journal":{"name":"2019 5th International Conference on Engineering, Applied Sciences and Technology (ICEAST)","volume":"39 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127603101","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 : 2019-07-01DOI: 10.1109/ICEAST.2019.8802542
Ratanaubol Rubpongse, Wanglok Do, K. Eguchi
To provide high stepped-up voltages to energy harvesting systems, this paper proposes ‘$boldsymbol{K^{N}}(boldsymbol{K}=1,2,ldots)$ and ($boldsymbol{N}=1,2,ldots$) voltage gain switched-capacitor DC-DC converter’ based on parallel Fibonacci-Type converters. The suggested converter topology leads the proposed converter to generate K power of N voltage gain in every clock cycle. Moreover, the power efficiency of the proposed converter is higher than that of traditional converters when they are operated on high gain mode. Since the output capacitance of the suggested converter is smaller than that of the conventional converter, it is possible to reduce the occupation area when IC implementation of the proposed one is performed.
{"title":"The Development of $K^{N}$ Voltage Gain Switched-Capacitor DC-DC Converter Based on Parallel Fibonacci-Type Converter","authors":"Ratanaubol Rubpongse, Wanglok Do, K. Eguchi","doi":"10.1109/ICEAST.2019.8802542","DOIUrl":"https://doi.org/10.1109/ICEAST.2019.8802542","url":null,"abstract":"To provide high stepped-up voltages to energy harvesting systems, this paper proposes ‘$boldsymbol{K^{N}}(boldsymbol{K}=1,2,ldots)$ and ($boldsymbol{N}=1,2,ldots$) voltage gain switched-capacitor DC-DC converter’ based on parallel Fibonacci-Type converters. The suggested converter topology leads the proposed converter to generate K power of N voltage gain in every clock cycle. Moreover, the power efficiency of the proposed converter is higher than that of traditional converters when they are operated on high gain mode. Since the output capacitance of the suggested converter is smaller than that of the conventional converter, it is possible to reduce the occupation area when IC implementation of the proposed one is performed.","PeriodicalId":188498,"journal":{"name":"2019 5th International Conference on Engineering, Applied Sciences and Technology (ICEAST)","volume":"23 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128480443","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 : 2019-07-01DOI: 10.1109/ICEAST.2019.8802549
Apichata Thongrak, Narongchon A-mapat, P. Moungnoul, P. Anunvrapong
Mobile network Operator is implemented coexistence LTE-TDD and LTE-FDD network, this technique used to improve the system capacity. The adjacent cell interference or ACI caused by these coexisting networks, which affected to the network performance. This paper investigates the load sharing technique to optimal the capacity of coexistence LTE network. Results show 4:6 of FDD and TDD user ratio that give maximum system throughput and comparing with power allocation and guard band technique will describe in this paper.
{"title":"Load Sharing Technique for Coexistence LTE-FDD and LTE-TDD","authors":"Apichata Thongrak, Narongchon A-mapat, P. Moungnoul, P. Anunvrapong","doi":"10.1109/ICEAST.2019.8802549","DOIUrl":"https://doi.org/10.1109/ICEAST.2019.8802549","url":null,"abstract":"Mobile network Operator is implemented coexistence LTE-TDD and LTE-FDD network, this technique used to improve the system capacity. The adjacent cell interference or ACI caused by these coexisting networks, which affected to the network performance. This paper investigates the load sharing technique to optimal the capacity of coexistence LTE network. Results show 4:6 of FDD and TDD user ratio that give maximum system throughput and comparing with power allocation and guard band technique will describe in this paper.","PeriodicalId":188498,"journal":{"name":"2019 5th International Conference on Engineering, Applied Sciences and Technology (ICEAST)","volume":"62 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129101567","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 : 2019-07-01DOI: 10.1109/ICEAST.2019.8802543
N. Moonpa, Kasem Janma
This research aims to model the dynamic properties of carbon black filled rubber under dynamic loads and find the parameters of the model. The models used included the Generalized Maxwell Model (GMM) and Generalized Fractional Derivative Maxwell Model (GFDMM). The research methodology used the experimental data of the dynamic preload test properties and data using dynamic excitation at constant amplitude throughout the frequency range 0–100 Hz. Parameters for both models was then found through curve fitting using the MATLAB program. The research found that GMM provided good results throughout the frequency range between 0–100 Hz., while the GFDMM also gave as good simulation results as GMM. Increasing the model elements provided better results but the GFDMM required less elements than the GMM. It can be concluded that both models can simulate the dynamic properties of carbon black filled rubber within and beyond that frequency range depending on the number of model elements.
{"title":"Viscoelastic Modelling and Parameter Identification of Elastomer under Dynamic Excitation","authors":"N. Moonpa, Kasem Janma","doi":"10.1109/ICEAST.2019.8802543","DOIUrl":"https://doi.org/10.1109/ICEAST.2019.8802543","url":null,"abstract":"This research aims to model the dynamic properties of carbon black filled rubber under dynamic loads and find the parameters of the model. The models used included the Generalized Maxwell Model (GMM) and Generalized Fractional Derivative Maxwell Model (GFDMM). The research methodology used the experimental data of the dynamic preload test properties and data using dynamic excitation at constant amplitude throughout the frequency range 0–100 Hz. Parameters for both models was then found through curve fitting using the MATLAB program. The research found that GMM provided good results throughout the frequency range between 0–100 Hz., while the GFDMM also gave as good simulation results as GMM. Increasing the model elements provided better results but the GFDMM required less elements than the GMM. It can be concluded that both models can simulate the dynamic properties of carbon black filled rubber within and beyond that frequency range depending on the number of model elements.","PeriodicalId":188498,"journal":{"name":"2019 5th International Conference on Engineering, Applied Sciences and Technology (ICEAST)","volume":"89 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116889953","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 : 2019-07-01DOI: 10.1109/ICEAST.2019.8802582
P. Nimsanong, N. Boonsaner, N. Pattanadech
Insulation resistance and polarization index tests have been conducted in utility companies as one of the major tools for evaluating the integrity of stator winding insulation of medium voltage motor. Unfortunately, the information obtained from the measurement results are the combination of the electrical problem and polarization problem in the insulation system not separated from each other. This paper presents a new approach so-called charge difference analysis (QDA) and charge ratio analysis (QRA) to identify the problem in stator winding insulation occurred from conduction mechanism or/and polarization mechanism. Moreover, proposed parameters which are QD, QG and QR have been conducted on field motors in the following case studies: the first group (A) consists of two motors of which one is new motor and the other one is severely aged motor, the second group (B) consists of two motors of which one is lightly loaded motor and the other one is thermally aged motor, and the third group (C) consists of a single motor, on which PDC measurements have been carried out after maintenance in 2014 and 2016 respectively. From experiments, it was found that proposed parameters are able to provide useful information about the condition of stator insulation, i.e. contamination or/and degradation.
{"title":"Condition Assessment of MV Motor Based on Charge Difference and Charge Ratio Analysis","authors":"P. Nimsanong, N. Boonsaner, N. Pattanadech","doi":"10.1109/ICEAST.2019.8802582","DOIUrl":"https://doi.org/10.1109/ICEAST.2019.8802582","url":null,"abstract":"Insulation resistance and polarization index tests have been conducted in utility companies as one of the major tools for evaluating the integrity of stator winding insulation of medium voltage motor. Unfortunately, the information obtained from the measurement results are the combination of the electrical problem and polarization problem in the insulation system not separated from each other. This paper presents a new approach so-called charge difference analysis (QDA) and charge ratio analysis (QRA) to identify the problem in stator winding insulation occurred from conduction mechanism or/and polarization mechanism. Moreover, proposed parameters which are QD, QG and QR have been conducted on field motors in the following case studies: the first group (A) consists of two motors of which one is new motor and the other one is severely aged motor, the second group (B) consists of two motors of which one is lightly loaded motor and the other one is thermally aged motor, and the third group (C) consists of a single motor, on which PDC measurements have been carried out after maintenance in 2014 and 2016 respectively. From experiments, it was found that proposed parameters are able to provide useful information about the condition of stator insulation, i.e. contamination or/and degradation.","PeriodicalId":188498,"journal":{"name":"2019 5th International Conference on Engineering, Applied Sciences and Technology (ICEAST)","volume":"18 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126865450","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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