Pub Date : 1900-01-01DOI: 10.1109/IPEC.2005.206986
Xu Yan, Wang Zeng-ping, Liu Qing
In order to calculate the inductance of transformer simulation model, this paper presents a new calculation method based on transformer magnetic circuit. This method calculates the mutual inductance and leakage inductance respectively. When calculating the leakage inductance, the effect of vertical leakage flux and horizontal leakage flux have been considered, which makes the calculating result are more correct. In order to prove the validity of this method, the data of simulation test and dynamic analog test have been compared. The results have proved that the method of magnetic circuit calculation is accurate
{"title":"Research on the method of inductance calculation in power transformer simulation model","authors":"Xu Yan, Wang Zeng-ping, Liu Qing","doi":"10.1109/IPEC.2005.206986","DOIUrl":"https://doi.org/10.1109/IPEC.2005.206986","url":null,"abstract":"In order to calculate the inductance of transformer simulation model, this paper presents a new calculation method based on transformer magnetic circuit. This method calculates the mutual inductance and leakage inductance respectively. When calculating the leakage inductance, the effect of vertical leakage flux and horizontal leakage flux have been considered, which makes the calculating result are more correct. In order to prove the validity of this method, the data of simulation test and dynamic analog test have been compared. The results have proved that the method of magnetic circuit calculation is accurate","PeriodicalId":164802,"journal":{"name":"2005 International Power Engineering Conference","volume":"41 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124234911","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 : 1900-01-01DOI: 10.1109/IPEC.2005.207051
Lidan Zhou, M.M. Khan, G. Yao, F. Ji, D. Xie, Cheng Chen, J. Shu
Current control loops is the key element in the control structure of active power filter systems. Among linear control techniques, deadbeat control has widely been accepted as a feasible current control technique as far the DSP implementation of APF is concerned. This control technique that uses high gains on the errors measured at one sample is very sensitive to any error or noise in the measurements, which is always there in electrical systems. Especially, the periodic noise in parallel implementation of an inverter or APF demands a higher order filter at the current transducer output, which affects the system dynamic response. Recently few papers have reported the results about the use of resetting integrators as filter in some electronic applications. This paper is an attempt to show possible application of resetting integrator as filter to current control for APF, where linear control methods have better frequency characteristics and current response than general deadbeat control. Simulation and experiment verify that these filters can be adopted to improve the performances of a current loop in APF
{"title":"On using resetting integrator in current control loop for active power filter","authors":"Lidan Zhou, M.M. Khan, G. Yao, F. Ji, D. Xie, Cheng Chen, J. Shu","doi":"10.1109/IPEC.2005.207051","DOIUrl":"https://doi.org/10.1109/IPEC.2005.207051","url":null,"abstract":"Current control loops is the key element in the control structure of active power filter systems. Among linear control techniques, deadbeat control has widely been accepted as a feasible current control technique as far the DSP implementation of APF is concerned. This control technique that uses high gains on the errors measured at one sample is very sensitive to any error or noise in the measurements, which is always there in electrical systems. Especially, the periodic noise in parallel implementation of an inverter or APF demands a higher order filter at the current transducer output, which affects the system dynamic response. Recently few papers have reported the results about the use of resetting integrators as filter in some electronic applications. This paper is an attempt to show possible application of resetting integrator as filter to current control for APF, where linear control methods have better frequency characteristics and current response than general deadbeat control. Simulation and experiment verify that these filters can be adopted to improve the performances of a current loop in APF","PeriodicalId":164802,"journal":{"name":"2005 International Power Engineering Conference","volume":"13 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114790791","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 : 1900-01-01DOI: 10.1109/IPEC.2005.206882
P. Chawande, S. Soman, P. Apte, S. Pandit
Current transformers form an integral part of protective systems. Ideal current transformers (CTs) are expected to reproduce the primary current faithfully on the secondary side. Often, during fault conditions an important component of current is exponentially decaying DC offset current. Under such conditions the CT saturates, and hence it cannot reproduce the primary current faithfully. This paper deals with experimental methods for determining CT performance under saturation. A laboratory setup has been developed to observe CT response under steady state and fault conditions. Thus, it is now possible to experimentally evaluate the CT performance under fault conditions
{"title":"Experimental evaluation of current transformer performance under saturation","authors":"P. Chawande, S. Soman, P. Apte, S. Pandit","doi":"10.1109/IPEC.2005.206882","DOIUrl":"https://doi.org/10.1109/IPEC.2005.206882","url":null,"abstract":"Current transformers form an integral part of protective systems. Ideal current transformers (CTs) are expected to reproduce the primary current faithfully on the secondary side. Often, during fault conditions an important component of current is exponentially decaying DC offset current. Under such conditions the CT saturates, and hence it cannot reproduce the primary current faithfully. This paper deals with experimental methods for determining CT performance under saturation. A laboratory setup has been developed to observe CT response under steady state and fault conditions. Thus, it is now possible to experimentally evaluate the CT performance under fault conditions","PeriodicalId":164802,"journal":{"name":"2005 International Power Engineering Conference","volume":"87 11 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126296280","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 : 1900-01-01DOI: 10.1109/IPEC.2005.206982
Ming-yu Yang, Yong-li Zhu
This paper presents the study of adaptive distance protection using multi-agent technology. The proposed distance protection system is realized with a layered and distributed structure based on multi-agent technology, and it is capable of performing beyond the traditional function. Intelligent algorithms based on data collected locally or shared with other devices can be processed, and adaptive protection function can be achieved. Simulations are used to illustrate the proposed methods to distance protection function. Preliminary results show that the adaptive distance protection is capable of improving performance of traditional protection system
{"title":"Study on adaptive distance protection using multi-agent technology","authors":"Ming-yu Yang, Yong-li Zhu","doi":"10.1109/IPEC.2005.206982","DOIUrl":"https://doi.org/10.1109/IPEC.2005.206982","url":null,"abstract":"This paper presents the study of adaptive distance protection using multi-agent technology. The proposed distance protection system is realized with a layered and distributed structure based on multi-agent technology, and it is capable of performing beyond the traditional function. Intelligent algorithms based on data collected locally or shared with other devices can be processed, and adaptive protection function can be achieved. Simulations are used to illustrate the proposed methods to distance protection function. Preliminary results show that the adaptive distance protection is capable of improving performance of traditional protection system","PeriodicalId":164802,"journal":{"name":"2005 International Power Engineering Conference","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126361951","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 : 1900-01-01DOI: 10.1109/IPEC.2005.206902
Suwarno
This paper describes the experimental results on the discharges in air, liquid and solid insulating materials. The electrode used for producing discharges was needle plane system. Under AC voltage discharges in air in the form of corona was developed. Discharge in liquid insulating material was produced in silicone oil with viscosity of 1000 cs. The discharge associated with the streamer in the oil. For solid insulating material, discharge associated with electrical treeing was investigated in low density polyethylene (LDPE). The discharges were measured using a personal-based discharge measurement system which able to measure the magnitude, frequency and the phase of discharge occurrence. The phase-resolved analysis of the discharges revealed that for corona, discharges were concentrated around the peak of applied voltage at negative half cycle. For silicone oil similar results were obtained while for electrical treeing in LDPE, the discharges were spread before the zero cross of the applied voltage up to the peak at both positive and negative half cycles. The discharge magnitude for all sources seemly strongly depends on the instantaneous of the applied voltage. The phase-resolved analysis indicated that for corona only several discharges took place in every half cycle which is concentrated around the peak of applied voltage. This similar trend was observed for discharges in oil. This indicated that the PD occurrence in air and oil are strongly affected by the applied voltage. However, for electrical treeing it was observed that the discharge occurrence was strongly affected by the time derivative of the applied voltage (dv/dt). This was clarified under triangular and rectangular voltages application
{"title":"Phase-resolved analysis of discharges in air, liquid and solid insulating materials","authors":"Suwarno","doi":"10.1109/IPEC.2005.206902","DOIUrl":"https://doi.org/10.1109/IPEC.2005.206902","url":null,"abstract":"This paper describes the experimental results on the discharges in air, liquid and solid insulating materials. The electrode used for producing discharges was needle plane system. Under AC voltage discharges in air in the form of corona was developed. Discharge in liquid insulating material was produced in silicone oil with viscosity of 1000 cs. The discharge associated with the streamer in the oil. For solid insulating material, discharge associated with electrical treeing was investigated in low density polyethylene (LDPE). The discharges were measured using a personal-based discharge measurement system which able to measure the magnitude, frequency and the phase of discharge occurrence. The phase-resolved analysis of the discharges revealed that for corona, discharges were concentrated around the peak of applied voltage at negative half cycle. For silicone oil similar results were obtained while for electrical treeing in LDPE, the discharges were spread before the zero cross of the applied voltage up to the peak at both positive and negative half cycles. The discharge magnitude for all sources seemly strongly depends on the instantaneous of the applied voltage. The phase-resolved analysis indicated that for corona only several discharges took place in every half cycle which is concentrated around the peak of applied voltage. This similar trend was observed for discharges in oil. This indicated that the PD occurrence in air and oil are strongly affected by the applied voltage. However, for electrical treeing it was observed that the discharge occurrence was strongly affected by the time derivative of the applied voltage (dv/dt). This was clarified under triangular and rectangular voltages application","PeriodicalId":164802,"journal":{"name":"2005 International Power Engineering Conference","volume":"10 5 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130288635","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 : 1900-01-01DOI: 10.1109/IPEC.2005.206952
Wang Zeng-ping, Liu Haofang, Xu Yan, Wang Xue
The reflection and refraction of fault-generated wave is discussed. The equations of currents measured by relay in S domain are deduced applying the Peterson principle. The energy ratio of a high frequency component to a low frequency component is mainly influenced by the fault position. Protection based on the ratio will be more adaptive if a higher frequency component is selected to be the low frequency component. Such protection also has satisfactory performance when used on series compensated lines. Discrete meyer wavelet packet decomposition technique is used to determine the energy ratio. Simulations have verified all conclusions demonstrated in this paper
{"title":"Research on wavelet packet decomposition based adaptive non unit transient current protection for EHV transmission lines","authors":"Wang Zeng-ping, Liu Haofang, Xu Yan, Wang Xue","doi":"10.1109/IPEC.2005.206952","DOIUrl":"https://doi.org/10.1109/IPEC.2005.206952","url":null,"abstract":"The reflection and refraction of fault-generated wave is discussed. The equations of currents measured by relay in S domain are deduced applying the Peterson principle. The energy ratio of a high frequency component to a low frequency component is mainly influenced by the fault position. Protection based on the ratio will be more adaptive if a higher frequency component is selected to be the low frequency component. Such protection also has satisfactory performance when used on series compensated lines. Discrete meyer wavelet packet decomposition technique is used to determine the energy ratio. Simulations have verified all conclusions demonstrated in this paper","PeriodicalId":164802,"journal":{"name":"2005 International Power Engineering Conference","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124403859","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 : 1900-01-01DOI: 10.1109/IPEC.2005.206976
M. Thong, Yeo Kok Beng, A. Sim
The Boon Lay extension line (BLE) is an extension of the existing MRT network. The line extended from the existing Boon Lay station on the western end of the east-west line comprising of 2 elevated stations located along a route of approximate 3.8 km. It is currently in the construction stage. This paper seeks to present the design considerations adopted in extending the power supply system to serve BLE. It discusses the 22 kV power supply distribution, traction network configuration, power simulations conducted and analysis of its results. It further discusses the protection systems used within the power supply systems and the design interfaces with other systems
{"title":"Design considerations of power supply systems for RTS system with Boon Lay extension line as case study","authors":"M. Thong, Yeo Kok Beng, A. Sim","doi":"10.1109/IPEC.2005.206976","DOIUrl":"https://doi.org/10.1109/IPEC.2005.206976","url":null,"abstract":"The Boon Lay extension line (BLE) is an extension of the existing MRT network. The line extended from the existing Boon Lay station on the western end of the east-west line comprising of 2 elevated stations located along a route of approximate 3.8 km. It is currently in the construction stage. This paper seeks to present the design considerations adopted in extending the power supply system to serve BLE. It discusses the 22 kV power supply distribution, traction network configuration, power simulations conducted and analysis of its results. It further discusses the protection systems used within the power supply systems and the design interfaces with other systems","PeriodicalId":164802,"journal":{"name":"2005 International Power Engineering Conference","volume":"82 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124583341","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 : 1900-01-01DOI: 10.1109/IPEC.2005.206915
Hai Jiang, Hankang Wang
In this paper, we describe a kind of Markov chain based anomaly detection in the new intrusion detection system called zone-based intrusion detection system (ZBIDS) for the wireless ad hoc distribution power communication networks (WAH-DPCNs). According to the simulation results, it can be seen that Markov chain based anomaly detection engine of ZBIDS has the very good intrusion detection capability
{"title":"Markov chain based anomaly detection for wireless ad hoc distribution power communication networks","authors":"Hai Jiang, Hankang Wang","doi":"10.1109/IPEC.2005.206915","DOIUrl":"https://doi.org/10.1109/IPEC.2005.206915","url":null,"abstract":"In this paper, we describe a kind of Markov chain based anomaly detection in the new intrusion detection system called zone-based intrusion detection system (ZBIDS) for the wireless ad hoc distribution power communication networks (WAH-DPCNs). According to the simulation results, it can be seen that Markov chain based anomaly detection engine of ZBIDS has the very good intrusion detection capability","PeriodicalId":164802,"journal":{"name":"2005 International Power Engineering Conference","volume":"23 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122017471","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 : 1900-01-01DOI: 10.1109/IPEC.2005.206880
Xu Yan, Liu Qing, W. Fei, Zhang Kunbo
Based on analyzing the status and existing questions of voltage and reactive power integrated control for substations, this paper presents a new voltage and reactive power control system based on fuzzy logic and dynamic borderline applying fuzzy control theory. Simulation tests and practical running have proved that this approach can reduce the adjust times of transformer tap and capacitor effectively and improve the control function
{"title":"Research on substation reactive power control with the fuzzy logic method","authors":"Xu Yan, Liu Qing, W. Fei, Zhang Kunbo","doi":"10.1109/IPEC.2005.206880","DOIUrl":"https://doi.org/10.1109/IPEC.2005.206880","url":null,"abstract":"Based on analyzing the status and existing questions of voltage and reactive power integrated control for substations, this paper presents a new voltage and reactive power control system based on fuzzy logic and dynamic borderline applying fuzzy control theory. Simulation tests and practical running have proved that this approach can reduce the adjust times of transformer tap and capacitor effectively and improve the control function","PeriodicalId":164802,"journal":{"name":"2005 International Power Engineering Conference","volume":"6 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123948352","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 : 1900-01-01DOI: 10.1109/IPEC.2005.207078
P. Ruilin, W. Yue, Wang Zhaoan, H. Ronny
In order to improve the quality of surface and subsurface of steel plate, hot plate leveler and cold plate leveler are arranged after main roll mill. This paper mainly present the design, control and technology for main drive roller of cold plate leveler (CPL), which has great function to satisfy complex and precise technology for steel production. A special 9 single-roller control strategy is indicated in the paper, realized by calculating computer model and monitoring data including general sequence control (GSC), general function control (GFC), leveling gap control (LGC), leveling roll entry (LRY), leveling roller exit (LRX), leveling single roller (LSR), leveling adjustment mode (LAM), bend-roller 4*4(B44), leveling exterior control (LEC). Every drive roller of 9 rollers are separately calculated and implemented by setting and feedback value of torque between steel plate and roller. In the last section of this paper, some experiment results are showed
{"title":"Synchronous speed control strategy for cold plate leveler","authors":"P. Ruilin, W. Yue, Wang Zhaoan, H. Ronny","doi":"10.1109/IPEC.2005.207078","DOIUrl":"https://doi.org/10.1109/IPEC.2005.207078","url":null,"abstract":"In order to improve the quality of surface and subsurface of steel plate, hot plate leveler and cold plate leveler are arranged after main roll mill. This paper mainly present the design, control and technology for main drive roller of cold plate leveler (CPL), which has great function to satisfy complex and precise technology for steel production. A special 9 single-roller control strategy is indicated in the paper, realized by calculating computer model and monitoring data including general sequence control (GSC), general function control (GFC), leveling gap control (LGC), leveling roll entry (LRY), leveling roller exit (LRX), leveling single roller (LSR), leveling adjustment mode (LAM), bend-roller 4*4(B44), leveling exterior control (LEC). Every drive roller of 9 rollers are separately calculated and implemented by setting and feedback value of torque between steel plate and roller. In the last section of this paper, some experiment results are showed","PeriodicalId":164802,"journal":{"name":"2005 International Power Engineering Conference","volume":"27 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125047152","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}
京公网安备 11010802042870号
京ICP备2023020795号-1
扫码关注我们
求助内容：
应助结果提醒方式：