Pub Date : 2016-05-01DOI: 10.1109/ICPS.2016.7490242
V. Salehi
This research provides detailed calculations of Equal Energy Lines, EELs, of Arc-flash categories defined by IEEE Std. 1584 for the application of Protection Device Coordination. The Personal Protective Equipment, PPE categories are illustrated as curves in Time-Current Coordination, TCC, plots in order to set and coordinate over-current devices such as fuses, breakers and relays. This would help a protection design engineer to consider an appropriate PPE level for any bus/equipment in a sophisticated power system. Also the developed tool will provide a sensitivity of the PPE category level based on the short circuit current or arcing current range. Therefore, the SC current intervals will be recognized to maintain a specific PPE level based on using both EELs and the device tripping time curves. In addition, a new method is also applied to the NFPA 70E using its look-up table for applicable PPE categories in AC and DC systems.
{"title":"Integrating arc-flash PPE categories in Protection Device Coordination based on IEEE Std. 1584 and NFPA 70E","authors":"V. Salehi","doi":"10.1109/ICPS.2016.7490242","DOIUrl":"https://doi.org/10.1109/ICPS.2016.7490242","url":null,"abstract":"This research provides detailed calculations of Equal Energy Lines, EELs, of Arc-flash categories defined by IEEE Std. 1584 for the application of Protection Device Coordination. The Personal Protective Equipment, PPE categories are illustrated as curves in Time-Current Coordination, TCC, plots in order to set and coordinate over-current devices such as fuses, breakers and relays. This would help a protection design engineer to consider an appropriate PPE level for any bus/equipment in a sophisticated power system. Also the developed tool will provide a sensitivity of the PPE category level based on the short circuit current or arcing current range. Therefore, the SC current intervals will be recognized to maintain a specific PPE level based on using both EELs and the device tripping time curves. In addition, a new method is also applied to the NFPA 70E using its look-up table for applicable PPE categories in AC and DC systems.","PeriodicalId":266558,"journal":{"name":"2016 IEEE/IAS 52nd Industrial and Commercial Power Systems Technical Conference (I&CPS)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2016-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114293880","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 : 2016-05-01DOI: 10.1109/ICPS.2016.7490220
F. Ferreira, A. D. de Almeida
Electric motors or power drive systems convert nearly half of the worldwide electric energy into mechanical energy, ultimately used in the final application or process. Overall motor driven system optimization is the key approach to effectively achieve the highest system efficiency levels for a given investment. Looking individually to each component may not lead to the most cost-effective option in terms of investment. In this 2-part paper, an overview on the motor driven system optimization is presented, looking at the most relevant related standards, commercial technologies and energy consumption reduction strategies. A collection of practical examples is also presented. In Part 1, an overview on international standards associated and high-efficiency technologies for power drive systems is presented. In Part 2, the energy savings potential associated with the output power reduction and regeneration is addressed.
{"title":"Overview on energy saving opportunities in electric motor driven systems - Part 2: Regeneration and output power reduction","authors":"F. Ferreira, A. D. de Almeida","doi":"10.1109/ICPS.2016.7490220","DOIUrl":"https://doi.org/10.1109/ICPS.2016.7490220","url":null,"abstract":"Electric motors or power drive systems convert nearly half of the worldwide electric energy into mechanical energy, ultimately used in the final application or process. Overall motor driven system optimization is the key approach to effectively achieve the highest system efficiency levels for a given investment. Looking individually to each component may not lead to the most cost-effective option in terms of investment. In this 2-part paper, an overview on the motor driven system optimization is presented, looking at the most relevant related standards, commercial technologies and energy consumption reduction strategies. A collection of practical examples is also presented. In Part 1, an overview on international standards associated and high-efficiency technologies for power drive systems is presented. In Part 2, the energy savings potential associated with the output power reduction and regeneration is addressed.","PeriodicalId":266558,"journal":{"name":"2016 IEEE/IAS 52nd Industrial and Commercial Power Systems Technical Conference (I&CPS)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2016-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115751587","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 : 2016-05-01DOI: 10.1109/ICPS.2016.7490259
S. Saleh, R. Meng, J. Meng
This paper develops and experimentally tests the performance of a digital interconnection protection for grid-connected wind energy conversion systems (WECSs). The developed protection is constructed by two frequency frames to process voltages and currents measured at the point-of-common-coupling (PCC). The first frequency frame is set to process the d - q-axis components of the instantaneous 3Φ apparent powers (sd and sq) determined at PCC. This processing of sd and sq aims to extract their high frequency sub-band contents in order to detect the islanding condition. The second frequency frame is set to extract the high frequency contents (magnitudes and phases) present in the 3Φ currents flowing through PCC. These high frequency contents provide signature information for detecting faults occurring on either side of PCC. The multi-frame digital interconnection protection is implemented for performance evaluation on two different WECSs operated in grid-connection. Performance results show accurate and reliable detection and identification of the islanding condition and faults occurring on either side of PCC. In addition, performance results show that the multi-frame digital interconnection protection has minor sensitivity to the type, structure, ratings, and levels of power delivery to the host grid.
{"title":"Developing and testing a digital interconnection protection for grid-connected WECSs","authors":"S. Saleh, R. Meng, J. Meng","doi":"10.1109/ICPS.2016.7490259","DOIUrl":"https://doi.org/10.1109/ICPS.2016.7490259","url":null,"abstract":"This paper develops and experimentally tests the performance of a digital interconnection protection for grid-connected wind energy conversion systems (WECSs). The developed protection is constructed by two frequency frames to process voltages and currents measured at the point-of-common-coupling (PCC). The first frequency frame is set to process the d - q-axis components of the instantaneous 3Φ apparent powers (sd and sq) determined at PCC. This processing of sd and sq aims to extract their high frequency sub-band contents in order to detect the islanding condition. The second frequency frame is set to extract the high frequency contents (magnitudes and phases) present in the 3Φ currents flowing through PCC. These high frequency contents provide signature information for detecting faults occurring on either side of PCC. The multi-frame digital interconnection protection is implemented for performance evaluation on two different WECSs operated in grid-connection. Performance results show accurate and reliable detection and identification of the islanding condition and faults occurring on either side of PCC. In addition, performance results show that the multi-frame digital interconnection protection has minor sensitivity to the type, structure, ratings, and levels of power delivery to the host grid.","PeriodicalId":266558,"journal":{"name":"2016 IEEE/IAS 52nd Industrial and Commercial Power Systems Technical Conference (I&CPS)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2016-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129857100","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 : 2016-05-01DOI: 10.1109/ICPS.2016.7490219
F. Ferreira, A. D. de Almeida
Electric motors or power drive systems convert nearly half of the worldwide electric energy into mechanical energy, ultimately used in the final application or process. Overall motor driven system optimization is the key approach to effectively achieve the highest system efficiency levels for a given investment. Looking individually to each component may not lead to the most cost-effective option in terms of investment. In this 2-part paper, an overview on the motor driven system optimization is presented, looking at the most relevant related standards, commercial technologies and energy consumption reduction strategies. A collection of practical examples is also presented. In Part 1, an overview on international standards associated and high-efficiency technologies for power drive systems is presented. In Part 2, the energy savings potential associated with the output power reduction and regeneration is addressed.
{"title":"Overview on energy saving opportunities in electric motor driven systems - Part 1: System efficiency improvement","authors":"F. Ferreira, A. D. de Almeida","doi":"10.1109/ICPS.2016.7490219","DOIUrl":"https://doi.org/10.1109/ICPS.2016.7490219","url":null,"abstract":"Electric motors or power drive systems convert nearly half of the worldwide electric energy into mechanical energy, ultimately used in the final application or process. Overall motor driven system optimization is the key approach to effectively achieve the highest system efficiency levels for a given investment. Looking individually to each component may not lead to the most cost-effective option in terms of investment. In this 2-part paper, an overview on the motor driven system optimization is presented, looking at the most relevant related standards, commercial technologies and energy consumption reduction strategies. A collection of practical examples is also presented. In Part 1, an overview on international standards associated and high-efficiency technologies for power drive systems is presented. In Part 2, the energy savings potential associated with the output power reduction and regeneration is addressed.","PeriodicalId":266558,"journal":{"name":"2016 IEEE/IAS 52nd Industrial and Commercial Power Systems Technical Conference (I&CPS)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2016-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127201203","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 : 2016-05-01DOI: 10.1109/ICPS.2016.7490245
M. Kolhe, N. P. Patidar, L. Nagar, A. Sharma
This paper analyzes four different test systems for defining coherent generators in the multi machine power systems based on the Eigen properties of the linearized model of the inter connected power system. The disruption is measured to be dispersed in the network by smearing small signal disturbance in each case. For finding the coherent areas and their tolerances in the inter-connected power system, no generator buses are allocated to each cluster of coherent generator using similar coherency recognition methods. The technique is assessed with four test schemes, and coherent generators and zones are acquired for diverse functioning points to render a more precise consortium approach, which is effective through a wide array of naturalistic functioning points of the network.
{"title":"Coherency identification and oscillation damping effects of PSS in interconnected power system: A comparative analysis approach","authors":"M. Kolhe, N. P. Patidar, L. Nagar, A. Sharma","doi":"10.1109/ICPS.2016.7490245","DOIUrl":"https://doi.org/10.1109/ICPS.2016.7490245","url":null,"abstract":"This paper analyzes four different test systems for defining coherent generators in the multi machine power systems based on the Eigen properties of the linearized model of the inter connected power system. The disruption is measured to be dispersed in the network by smearing small signal disturbance in each case. For finding the coherent areas and their tolerances in the inter-connected power system, no generator buses are allocated to each cluster of coherent generator using similar coherency recognition methods. The technique is assessed with four test schemes, and coherent generators and zones are acquired for diverse functioning points to render a more precise consortium approach, which is effective through a wide array of naturalistic functioning points of the network.","PeriodicalId":266558,"journal":{"name":"2016 IEEE/IAS 52nd Industrial and Commercial Power Systems Technical Conference (I&CPS)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2016-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122466556","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 : 2016-05-01DOI: 10.1109/ICPS.2016.7490261
E. Larsen, M. Valdes, G. Fox, Ken R. Rempe, C. Walker
IEEE Standard 3004.5 provides information to help engineers select the proper low voltage circuit breaker for a particular industrial or commercial power system application. This paper is an overview of what is in this new standard and highlights the new or revised content from that contained in IEEE Standard 1015-2006 Applying Low Voltage Circuit Breakers Used in Industrial and Commercial Power Systems, otherwise known as The Blue Book.
{"title":"IEEE 3004.5 recommended practice for the application of Low-Voltage Circuit Breakers in Industrial and Commercial Power Systems","authors":"E. Larsen, M. Valdes, G. Fox, Ken R. Rempe, C. Walker","doi":"10.1109/ICPS.2016.7490261","DOIUrl":"https://doi.org/10.1109/ICPS.2016.7490261","url":null,"abstract":"IEEE Standard 3004.5 provides information to help engineers select the proper low voltage circuit breaker for a particular industrial or commercial power system application. This paper is an overview of what is in this new standard and highlights the new or revised content from that contained in IEEE Standard 1015-2006 Applying Low Voltage Circuit Breakers Used in Industrial and Commercial Power Systems, otherwise known as The Blue Book.","PeriodicalId":266558,"journal":{"name":"2016 IEEE/IAS 52nd Industrial and Commercial Power Systems Technical Conference (I&CPS)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2016-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122433702","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 : 2016-05-01DOI: 10.1109/ICPS.2016.7490230
Aleksandar Damjanovic, R. Integlia, A. Sarwat
Efficiency of the transformer is in the range of 95-99%, which means that up to 5% of the energy is wasted in the losses of the power transformer. The efficiency of power transformers is defined as the ratio between output and input power. Input power is the sum of the output power and transformer losses. Measurement of the power transformer losses under nonlinear load conditions can be done only when the load is connected, i.e in real working conditions. Connection of the instrumentation is on the input and the output terminals of the measured system. The measured system is considered as a two-port network in which the losses are dissipated. Several connections were proposed for measurements of power transformer losses under nonlinear conditions using digital instruments and different measuring methods: Difference of Input and Output of Powers, called Power In-Out Method, and Voltage and Current Difference. The topic of this article is to discuss and evaluate accuracy in measurements of the transformer losses with those methods. We are not focused on digital process, A/D conversions, etc., we are focused on algorithms and methods of measurement and their response to the instrumentation errors. Significance of assessment of measuring errors is due to the fact that the errors are propagating through calculations and produce errors in the measuring results. Analyses are done with algebra of penetration of errors used in calculations and measuring algorithms.
{"title":"Evaluation of power transformer loses measurements methods under nonlinear load conditions","authors":"Aleksandar Damjanovic, R. Integlia, A. Sarwat","doi":"10.1109/ICPS.2016.7490230","DOIUrl":"https://doi.org/10.1109/ICPS.2016.7490230","url":null,"abstract":"Efficiency of the transformer is in the range of 95-99%, which means that up to 5% of the energy is wasted in the losses of the power transformer. The efficiency of power transformers is defined as the ratio between output and input power. Input power is the sum of the output power and transformer losses. Measurement of the power transformer losses under nonlinear load conditions can be done only when the load is connected, i.e in real working conditions. Connection of the instrumentation is on the input and the output terminals of the measured system. The measured system is considered as a two-port network in which the losses are dissipated. Several connections were proposed for measurements of power transformer losses under nonlinear conditions using digital instruments and different measuring methods: Difference of Input and Output of Powers, called Power In-Out Method, and Voltage and Current Difference. The topic of this article is to discuss and evaluate accuracy in measurements of the transformer losses with those methods. We are not focused on digital process, A/D conversions, etc., we are focused on algorithms and methods of measurement and their response to the instrumentation errors. Significance of assessment of measuring errors is due to the fact that the errors are propagating through calculations and produce errors in the measuring results. Analyses are done with algebra of penetration of errors used in calculations and measuring algorithms.","PeriodicalId":266558,"journal":{"name":"2016 IEEE/IAS 52nd Industrial and Commercial Power Systems Technical Conference (I&CPS)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2016-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129890006","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 : 2016-05-01DOI: 10.1109/ICPS.2016.7490251
Li Wang, Shun-Chin Ke, A. Prokhorov
This paper presents the stability and power-flow control results of a multi-machine power system connected with a hybrid offshore wind farm (OWF) of 160 MW through a unified power-flow controller (UPFC). The q-d axis equivalent-circuit model is employed to establish the complete system model of the integration of the hybrid OWF, UPFC and the multi-machine power system under three-phase balanced loading conditions. Steady-state performance of the proposed UPFC on power-flow control of the studied system is evaluated. Transient simulation results under a three-phase short-circuit fault are also performed. It can be concluded from the simulation results that the proposed UPFC can achieve power-flow control and render damping to suppress oscillations of the studied multi-machine power system connected with the hybrid OWF under various operating conditions.
{"title":"Stability and power-flow control of a multi-machine power system connected with a hybrid offshore wind farm using a unified power-flow controller","authors":"Li Wang, Shun-Chin Ke, A. Prokhorov","doi":"10.1109/ICPS.2016.7490251","DOIUrl":"https://doi.org/10.1109/ICPS.2016.7490251","url":null,"abstract":"This paper presents the stability and power-flow control results of a multi-machine power system connected with a hybrid offshore wind farm (OWF) of 160 MW through a unified power-flow controller (UPFC). The q-d axis equivalent-circuit model is employed to establish the complete system model of the integration of the hybrid OWF, UPFC and the multi-machine power system under three-phase balanced loading conditions. Steady-state performance of the proposed UPFC on power-flow control of the studied system is evaluated. Transient simulation results under a three-phase short-circuit fault are also performed. It can be concluded from the simulation results that the proposed UPFC can achieve power-flow control and render damping to suppress oscillations of the studied multi-machine power system connected with the hybrid OWF under various operating conditions.","PeriodicalId":266558,"journal":{"name":"2016 IEEE/IAS 52nd Industrial and Commercial Power Systems Technical Conference (I&CPS)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2016-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133304496","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 : 2016-05-01DOI: 10.1109/ICPS.2016.7490249
Mariana C. Pulcherio, A. Renjit, M. Illindala, A. Khalsa, J. Eto
For a microgrid with a mix of distributed energy resources (DERs), major challenges on its survivability are found in the islanded condition. In particular, a sudden loss of generation or a large and fluctuating load could force the microgrid to operate near its capacity limits. Such a situation can cause a cascading collapse of the system, even when the load demand is within the DER's kW rating - as observed during several tests at the Consortium for Electric Reliability Technology Solutions (CERTS) Microgrid Test Bed. This paper analyzes the prime-mover stalling phenomena behind the system collapse. It highlights how the reserve margin of the system is lowered during transient conditions. Furthermore, two control methods are evaluated to resolve the microgrid collapse problem.
{"title":"Evaluation of control methods to prevent prime-mover stalling in a mixed source microgrid","authors":"Mariana C. Pulcherio, A. Renjit, M. Illindala, A. Khalsa, J. Eto","doi":"10.1109/ICPS.2016.7490249","DOIUrl":"https://doi.org/10.1109/ICPS.2016.7490249","url":null,"abstract":"For a microgrid with a mix of distributed energy resources (DERs), major challenges on its survivability are found in the islanded condition. In particular, a sudden loss of generation or a large and fluctuating load could force the microgrid to operate near its capacity limits. Such a situation can cause a cascading collapse of the system, even when the load demand is within the DER's kW rating - as observed during several tests at the Consortium for Electric Reliability Technology Solutions (CERTS) Microgrid Test Bed. This paper analyzes the prime-mover stalling phenomena behind the system collapse. It highlights how the reserve margin of the system is lowered during transient conditions. Furthermore, two control methods are evaluated to resolve the microgrid collapse problem.","PeriodicalId":266558,"journal":{"name":"2016 IEEE/IAS 52nd Industrial and Commercial Power Systems Technical Conference (I&CPS)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2016-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133338851","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 : 2016-05-01DOI: 10.1109/ICPS.2016.7490243
Mousalreza Faramarzi, M. Tabibzadeh, Sina Mohseni, M. Jafari
In this paper, a new automatic system has been proposed for critical conditions diagnosis of distribution insulators. In this regard, a variety of experiments have been conducted on different types of insulators under different environmental conditions. Leakage current harmonics on these experiments have been analyzed. Fast Fourier Transform (FFT) applied on leakage current waveforms and results show a strong correlation between third to fifth harmonics amplitude ratio regarding to insulators conditions. Therefore, third to fifth harmonics ratio of leakage current (R3/5) has been proposed as an indicator to diagnosis critical conditions in distribution insulators. Results demonstrate if value of index R3/5 becomes more than unit, it will be critical condition for insulator and high probability of flashover occurrence. Hence, an automatic system designed for critical conditions detection and flashover prediction using the index R3/5.
{"title":"Automatic system for detection critical conditions in overhead lines distribution insulators based on leakage current analysis","authors":"Mousalreza Faramarzi, M. Tabibzadeh, Sina Mohseni, M. Jafari","doi":"10.1109/ICPS.2016.7490243","DOIUrl":"https://doi.org/10.1109/ICPS.2016.7490243","url":null,"abstract":"In this paper, a new automatic system has been proposed for critical conditions diagnosis of distribution insulators. In this regard, a variety of experiments have been conducted on different types of insulators under different environmental conditions. Leakage current harmonics on these experiments have been analyzed. Fast Fourier Transform (FFT) applied on leakage current waveforms and results show a strong correlation between third to fifth harmonics amplitude ratio regarding to insulators conditions. Therefore, third to fifth harmonics ratio of leakage current (R3/5) has been proposed as an indicator to diagnosis critical conditions in distribution insulators. Results demonstrate if value of index R3/5 becomes more than unit, it will be critical condition for insulator and high probability of flashover occurrence. Hence, an automatic system designed for critical conditions detection and flashover prediction using the index R3/5.","PeriodicalId":266558,"journal":{"name":"2016 IEEE/IAS 52nd Industrial and Commercial Power Systems Technical Conference (I&CPS)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2016-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130400211","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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