Pub Date : 2011-10-01DOI: 10.1109/ICEPE-ST.2011.6122941
Liqiong Sun, Li Yu, Zhiyuan Liu, Jianhua Wang, Yingsan Geng
A vacuum interrupter reaches its interruption limit once high-current anode phenomena occur. It is well-known that contact diameter, contact material, and magnetic field have a significant influence on high-current anode phenomena formation. However, an opening displacement characteristic of movable contact is another contribution for an anode spot formation. The objective of this paper is to propose an opening displacement characteristic for a vacuum interrupter to avoid a formation of high-current anode phenomena. The anode phenomena were observed by using high speed CCD camera. The vacuum interrupters were used in the experiments, which had a glass envelope and there was no stainless shield installed. The diameters of butt type contacts were 12 mm and 25 mm, respectively. The average opening velocities during 10ms after contacts separated were ranged from 1.1m/s to 2.0m/s. And arcing time was adjusted from 2ms to 10ms with a fixed velocity and peak arc current. The results showed that in an anode diagram for each vacuum interrupter, an arcing curve can be obtained, which avoids the regions of intense arc mode and anode spot mode. And this arcing curve corresponds to an opening displacement curve of vacuum interrupter. With the proposed opening displacement curve, high-current anode phenomena will not occur, which has a positive impact on the interrupting performance of the vacuum interrupter.
{"title":"An opening displacement characteristic determined by high-current anode phenomena of vacuum interrupter","authors":"Liqiong Sun, Li Yu, Zhiyuan Liu, Jianhua Wang, Yingsan Geng","doi":"10.1109/ICEPE-ST.2011.6122941","DOIUrl":"https://doi.org/10.1109/ICEPE-ST.2011.6122941","url":null,"abstract":"A vacuum interrupter reaches its interruption limit once high-current anode phenomena occur. It is well-known that contact diameter, contact material, and magnetic field have a significant influence on high-current anode phenomena formation. However, an opening displacement characteristic of movable contact is another contribution for an anode spot formation. The objective of this paper is to propose an opening displacement characteristic for a vacuum interrupter to avoid a formation of high-current anode phenomena. The anode phenomena were observed by using high speed CCD camera. The vacuum interrupters were used in the experiments, which had a glass envelope and there was no stainless shield installed. The diameters of butt type contacts were 12 mm and 25 mm, respectively. The average opening velocities during 10ms after contacts separated were ranged from 1.1m/s to 2.0m/s. And arcing time was adjusted from 2ms to 10ms with a fixed velocity and peak arc current. The results showed that in an anode diagram for each vacuum interrupter, an arcing curve can be obtained, which avoids the regions of intense arc mode and anode spot mode. And this arcing curve corresponds to an opening displacement curve of vacuum interrupter. With the proposed opening displacement curve, high-current anode phenomena will not occur, which has a positive impact on the interrupting performance of the vacuum interrupter.","PeriodicalId":379448,"journal":{"name":"2011 1st International Conference on Electric Power Equipment - Switching Technology","volume":"132 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133789982","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 : 2011-10-01DOI: 10.1109/ICEPE-ST.2011.6123019
H. Ohashi
Effective and efficient use of electrical power will become more important for coming highly electrified society. In the highly electrified society, power electronics will become essential means for processing electrical power effectively. Power semiconductor devices (power devices) are key components of power electronics as one of typical switching technologies in electrical engineering. Power device history and future advanced power devices are discussed focusing on high voltage and high current power devices.
{"title":"High voltage high current semiconductor devices and its new application-future power electronics possibilities for social infrastructure","authors":"H. Ohashi","doi":"10.1109/ICEPE-ST.2011.6123019","DOIUrl":"https://doi.org/10.1109/ICEPE-ST.2011.6123019","url":null,"abstract":"Effective and efficient use of electrical power will become more important for coming highly electrified society. In the highly electrified society, power electronics will become essential means for processing electrical power effectively. Power semiconductor devices (power devices) are key components of power electronics as one of typical switching technologies in electrical engineering. Power device history and future advanced power devices are discussed focusing on high voltage and high current power devices.","PeriodicalId":379448,"journal":{"name":"2011 1st International Conference on Electric Power Equipment - Switching Technology","volume":"35 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115885544","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 : 2011-10-01DOI: 10.1109/ICEPE-ST.2011.6122953
Yundong Cao, Shu Wang, Jing Li, Zhiming Qi
A 252kV single-break SF6 circuit breaker is taken as the investigation model in this paper and 3D numerical calculation model of traditional no-blade nozzle and novel blade nozzle are presented based on 3D N-S equations. By simulating, influences of gas flow on arc during the arc extinguishing process of the two type nozzles have been researched using finite volume method (FVM). Arc extinction performance has been judged by comparison temperature, pressure and velocity vector of blade nozzle under different opening load. And the variation regular of energy is acquired by analyzing the maximum sections energy. Research indicates that blade nozzle can control gas flow movement effectively, accelerate arc energy dissipation, and benefit for the interruption of circuit breaker.
{"title":"Research on rotary-gas high voltage SF6 circuit breaker with novel blade nozzle Part III: Arc behavior research","authors":"Yundong Cao, Shu Wang, Jing Li, Zhiming Qi","doi":"10.1109/ICEPE-ST.2011.6122953","DOIUrl":"https://doi.org/10.1109/ICEPE-ST.2011.6122953","url":null,"abstract":"A 252kV single-break SF6 circuit breaker is taken as the investigation model in this paper and 3D numerical calculation model of traditional no-blade nozzle and novel blade nozzle are presented based on 3D N-S equations. By simulating, influences of gas flow on arc during the arc extinguishing process of the two type nozzles have been researched using finite volume method (FVM). Arc extinction performance has been judged by comparison temperature, pressure and velocity vector of blade nozzle under different opening load. And the variation regular of energy is acquired by analyzing the maximum sections energy. Research indicates that blade nozzle can control gas flow movement effectively, accelerate arc energy dissipation, and benefit for the interruption of circuit breaker.","PeriodicalId":379448,"journal":{"name":"2011 1st International Conference on Electric Power Equipment - Switching Technology","volume":"33 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115277116","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 : 2011-10-01DOI: 10.1109/ICEPE-ST.2011.6122969
Y. S. Lee, H. Ahn, S. W. Park, J. H. Lee
Electrical energy transmission and distribution devices are becoming more sophisticated and diversified in design, and also higher in its capacity due to rising in electricity usage. In direct response to demands of more reliable GIS (Gas Insulated Switchgear) from customers, computer simulations such as dynamics, structural, and fluid dynamics analysis are becoming more incorporated into the design process. Among the many types of simulations in GIS are low current interruption, SLF interruption, and BTF interruption. In the simulations, a stroke profile measured under loaded condition is required, and it leads to reduction in time and cost required towards the product development. In the paper, first, the actuator and interrupter of GIS is modeled using dynamics simulation program called RecurDyn. Second, SF6 gas pressure change in the interrupting chamber is made into a sub-routine using house code. Finally, with consideration of ODP (Oil Dash Pot) and friction forces of actuator, stroke profile under actual loaded condition is calculated.
{"title":"Coupled simulation of gas flow and dynamic analysis for stroke calculation in circuit breaker","authors":"Y. S. Lee, H. Ahn, S. W. Park, J. H. Lee","doi":"10.1109/ICEPE-ST.2011.6122969","DOIUrl":"https://doi.org/10.1109/ICEPE-ST.2011.6122969","url":null,"abstract":"Electrical energy transmission and distribution devices are becoming more sophisticated and diversified in design, and also higher in its capacity due to rising in electricity usage. In direct response to demands of more reliable GIS (Gas Insulated Switchgear) from customers, computer simulations such as dynamics, structural, and fluid dynamics analysis are becoming more incorporated into the design process. Among the many types of simulations in GIS are low current interruption, SLF interruption, and BTF interruption. In the simulations, a stroke profile measured under loaded condition is required, and it leads to reduction in time and cost required towards the product development. In the paper, first, the actuator and interrupter of GIS is modeled using dynamics simulation program called RecurDyn. Second, SF6 gas pressure change in the interrupting chamber is made into a sub-routine using house code. Finally, with consideration of ODP (Oil Dash Pot) and friction forces of actuator, stroke profile under actual loaded condition is calculated.","PeriodicalId":379448,"journal":{"name":"2011 1st International Conference on Electric Power Equipment - Switching Technology","volume":"387 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123263480","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 : 2011-10-01DOI: 10.1109/ICEPE-ST.2011.6123060
Yundong Cao, Renlei Liu, Shuxin Liu, Jing Li
Major obstacles to analysis and design of high performance puffer circuit breaker is insufficient appreciation of the gas flow motion in arc quenching chamber. Puffer circuit breaker model which is detachable was regarded as study object in this paper. A method called thermal flow rate detecting technique is proposed to detect the airspeed in arc quenching chamber in this paper and a hot-wire airflow sensor which has advantages of low-cost, low power consumption and rapid thermal response time is designed. Computer processing technology is used to specify the speed of fluid by establishing mathematical model based on sensing mechanism of the transducer in a constant temperature operation mode. The temperature compensation and linear compensation of transducer are achieved by way of data fusion algorithm and the designed flowmeter is made a static calibration by experiment platform at the same time which proves that application of hot-wire transducer in breaker is feasible.
{"title":"Experimental investigation on the gas flow motion of puffer circuit breaker","authors":"Yundong Cao, Renlei Liu, Shuxin Liu, Jing Li","doi":"10.1109/ICEPE-ST.2011.6123060","DOIUrl":"https://doi.org/10.1109/ICEPE-ST.2011.6123060","url":null,"abstract":"Major obstacles to analysis and design of high performance puffer circuit breaker is insufficient appreciation of the gas flow motion in arc quenching chamber. Puffer circuit breaker model which is detachable was regarded as study object in this paper. A method called thermal flow rate detecting technique is proposed to detect the airspeed in arc quenching chamber in this paper and a hot-wire airflow sensor which has advantages of low-cost, low power consumption and rapid thermal response time is designed. Computer processing technology is used to specify the speed of fluid by establishing mathematical model based on sensing mechanism of the transducer in a constant temperature operation mode. The temperature compensation and linear compensation of transducer are achieved by way of data fusion algorithm and the designed flowmeter is made a static calibration by experiment platform at the same time which proves that application of hot-wire transducer in breaker is feasible.","PeriodicalId":379448,"journal":{"name":"2011 1st International Conference on Electric Power Equipment - Switching Technology","volume":"105 3","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"113960355","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 : 2011-10-01DOI: 10.1109/ICEPE-ST.2011.6122959
Y. Guan, Weidong Liu, Junhui Wu, Wenyi Li
The transient pressure process, which determined the gas blasting in the interrupter of SF6 circuit breaker, have attracted the attention of designer and developer for long time. In this investigation, a on-load SF6 interrupter pressure measurement method was established with piezoresistive pressure transducer and insulating-tube. The pressures in the puffer cylinder, at the upstream, throat and downstream of nozzle have been measured. The difference of gas blowing characteristics between N2 and SF6 has been pointed out. The insulating-tube can effectively protect the pressure transducer from the high voltage and high temperature during on-load interrupting. It was found that the arc process can cause high frequency oscillations to superimpose upon the pressure waveforms during on-load interrupting.
{"title":"Interrupter pressure measurement of a 252 kV SF6 circuit breaker","authors":"Y. Guan, Weidong Liu, Junhui Wu, Wenyi Li","doi":"10.1109/ICEPE-ST.2011.6122959","DOIUrl":"https://doi.org/10.1109/ICEPE-ST.2011.6122959","url":null,"abstract":"The transient pressure process, which determined the gas blasting in the interrupter of SF6 circuit breaker, have attracted the attention of designer and developer for long time. In this investigation, a on-load SF6 interrupter pressure measurement method was established with piezoresistive pressure transducer and insulating-tube. The pressures in the puffer cylinder, at the upstream, throat and downstream of nozzle have been measured. The difference of gas blowing characteristics between N2 and SF6 has been pointed out. The insulating-tube can effectively protect the pressure transducer from the high voltage and high temperature during on-load interrupting. It was found that the arc process can cause high frequency oscillations to superimpose upon the pressure waveforms during on-load interrupting.","PeriodicalId":379448,"journal":{"name":"2011 1st International Conference on Electric Power Equipment - Switching Technology","volume":"57 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114067944","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 : 2011-10-01DOI: 10.1109/ICEPE-ST.2011.6123026
Pengfei Zhang, Guoguang Zhang, Yengsan Geng, Yi Zhang, Jie Wu, Boyu Yang
In the process of arc splitting in low voltage switching devices, the flow field in arc chamber plays an important role. In order to accelerate the arc quenching, one of the most common methods is to enhance the gas flow through adding gas material in arc chamber currently. Meanwhile, in the recent research, it has been found that improving the flow field through optimum structural design of arc chamber is another effective way, especially in the recent market trend that the low voltage switching devices are getting more and more small size. In this paper, with the CFD software of Fluent, the model of arc chamber which is from a type of auto transfer switch equipment and the magneto-hydrodynamic model of the arc were established. The distribution of the flow field in arc chamber during arc igniting was calculated. On the basis of analyzing the flow field, an optimum arc chamber was proposed. In the meantime, experimental investigations on the former and the optimum arc chambers were carried out under the same conditions. The arc current and arc voltage were measured. The arc motion process and back commutation phenomenon captured with the high-speed camera were observed. The results show that the interruption performance of the optimum arc chamber is improved prominently.
{"title":"The optimum structural design of low-voltage arc chamber based on simulation and analysis of flow field","authors":"Pengfei Zhang, Guoguang Zhang, Yengsan Geng, Yi Zhang, Jie Wu, Boyu Yang","doi":"10.1109/ICEPE-ST.2011.6123026","DOIUrl":"https://doi.org/10.1109/ICEPE-ST.2011.6123026","url":null,"abstract":"In the process of arc splitting in low voltage switching devices, the flow field in arc chamber plays an important role. In order to accelerate the arc quenching, one of the most common methods is to enhance the gas flow through adding gas material in arc chamber currently. Meanwhile, in the recent research, it has been found that improving the flow field through optimum structural design of arc chamber is another effective way, especially in the recent market trend that the low voltage switching devices are getting more and more small size. In this paper, with the CFD software of Fluent, the model of arc chamber which is from a type of auto transfer switch equipment and the magneto-hydrodynamic model of the arc were established. The distribution of the flow field in arc chamber during arc igniting was calculated. On the basis of analyzing the flow field, an optimum arc chamber was proposed. In the meantime, experimental investigations on the former and the optimum arc chambers were carried out under the same conditions. The arc current and arc voltage were measured. The arc motion process and back commutation phenomenon captured with the high-speed camera were observed. The results show that the interruption performance of the optimum arc chamber is improved prominently.","PeriodicalId":379448,"journal":{"name":"2011 1st International Conference on Electric Power Equipment - Switching Technology","volume":"51 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126176108","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 : 2011-10-01DOI: 10.1109/ICEPE-ST.2011.6123010
G. Marquezin, Lin Yi, Zhenxia Deng, P. Robin-Jouan, Jafeth Rodríguez
The development of modern simulation tools in all the physics and the important increase of the computer capabilities allow engineers to use numerical simulation tools for high voltage circuit-breaker developments. First dimensioning and optimization are possible and lead to a reduction of the tests. With appropriate hypothesis, today commercial softwares are perfectly relevant, typically for the dielectric, thermal and mechanical calculations. The electromagnetic, fluid and breaking process simulations are more complex since precise phenomena have to be considered and can be partially defined. Particular criteria can be used to predict the success or failure of the real test. To be more and more fitted to tests, these tools are still being developed and particular validation steps are required. The paper presents some details about these tools and their applications.
{"title":"Contribution of the numerical simulation tools in the high voltage circuit-breaker conception","authors":"G. Marquezin, Lin Yi, Zhenxia Deng, P. Robin-Jouan, Jafeth Rodríguez","doi":"10.1109/ICEPE-ST.2011.6123010","DOIUrl":"https://doi.org/10.1109/ICEPE-ST.2011.6123010","url":null,"abstract":"The development of modern simulation tools in all the physics and the important increase of the computer capabilities allow engineers to use numerical simulation tools for high voltage circuit-breaker developments. First dimensioning and optimization are possible and lead to a reduction of the tests. With appropriate hypothesis, today commercial softwares are perfectly relevant, typically for the dielectric, thermal and mechanical calculations. The electromagnetic, fluid and breaking process simulations are more complex since precise phenomena have to be considered and can be partially defined. Particular criteria can be used to predict the success or failure of the real test. To be more and more fitted to tests, these tools are still being developed and particular validation steps are required. The paper presents some details about these tools and their applications.","PeriodicalId":379448,"journal":{"name":"2011 1st International Conference on Electric Power Equipment - Switching Technology","volume":"22 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125730861","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 : 2011-10-01DOI: 10.1109/ICEPE-ST.2011.6122992
Li Shuxin, Cao Yundong, Hou Chunguang, L. Xiaoming, Li Jing
For improving reliable operation of switchgear in power system, an approach for on-line monitoring the insulation characteristic and bus-bar temperature rising of the switchgear is proposed in this paper. Through comparing several existing temperature measurement methods for monitoring temperature rising elevation at bus-bas, a new design of temperature monitoring method is proposed. It adopts quick-magnetic saturated current transformer, temperature sensor and infrared transmission to solve the problem of high voltage isolation. For switchgear insulation characteristic monitoring, using the micro-controller unit (MCU) and hardware design, an on-line dielectric loss angle and leakage current measuring method with low cost and high accuracy is implemented. Sensor and signal conditioning circuit design are adopted to ensure the accuracy of leakage current measurement. The frequency voltage signal is extracted by connecting voltage-dividing capacitor on capacitive device terminal and absolute method of measurement and zero-crossing comparison measurement is adapted to measure dielectric loss angle whose principle and calculation approach are presented in this paper. The leakage current and dielectric loss angle can be regarded as criterion to assess switchgear insulation characteristic. Because the monitoring system works in several electromagnetic interference environments, some hardware and software electromagnetic immunity measures are discussed. At last, the system runs in real system and the result shows the on-line monitoring system is stable and reliable which can be provide reference for on-line monitoring system design of switchgear.
{"title":"Development of on-line monitoring system of switchgear","authors":"Li Shuxin, Cao Yundong, Hou Chunguang, L. Xiaoming, Li Jing","doi":"10.1109/ICEPE-ST.2011.6122992","DOIUrl":"https://doi.org/10.1109/ICEPE-ST.2011.6122992","url":null,"abstract":"For improving reliable operation of switchgear in power system, an approach for on-line monitoring the insulation characteristic and bus-bar temperature rising of the switchgear is proposed in this paper. Through comparing several existing temperature measurement methods for monitoring temperature rising elevation at bus-bas, a new design of temperature monitoring method is proposed. It adopts quick-magnetic saturated current transformer, temperature sensor and infrared transmission to solve the problem of high voltage isolation. For switchgear insulation characteristic monitoring, using the micro-controller unit (MCU) and hardware design, an on-line dielectric loss angle and leakage current measuring method with low cost and high accuracy is implemented. Sensor and signal conditioning circuit design are adopted to ensure the accuracy of leakage current measurement. The frequency voltage signal is extracted by connecting voltage-dividing capacitor on capacitive device terminal and absolute method of measurement and zero-crossing comparison measurement is adapted to measure dielectric loss angle whose principle and calculation approach are presented in this paper. The leakage current and dielectric loss angle can be regarded as criterion to assess switchgear insulation characteristic. Because the monitoring system works in several electromagnetic interference environments, some hardware and software electromagnetic immunity measures are discussed. At last, the system runs in real system and the result shows the on-line monitoring system is stable and reliable which can be provide reference for on-line monitoring system design of switchgear.","PeriodicalId":379448,"journal":{"name":"2011 1st International Conference on Electric Power Equipment - Switching Technology","volume":"45 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129718651","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 : 2011-10-01DOI: 10.1109/ICEPE-ST.2011.6123023
Zhou Huigao, Yang Xiaohui, Xu Fan
With the growth of capacity of high voltage direct current (HVDC) transmission lines, the ratings of thyristor valves, which are one of the most critical equipments, are getting higher and higher. Verification of performance of thyristor valves particularly designed for HVDC project plays an important role in the handover of products between the manufacturer and the client [1]. Conventional test facilities based on philosophy of direct test cannot meet the requirements for modern thyristor valves. New test facilities with high ratings are necessarily built based on philosophy of synthetic test. Over the conventional direct test circuit, the later is an economical and feasible solution with less financial investment and higher test capability. However, the equivalency between the synthetic test and the direct test should be analyzed technically in order to make sure that the condition of verification test in a synthetic test circuit should satisfy the actual operation condition of thyristor valves existing in a real HVDC project, just as in a direct test circuit. Equivalency analysis is focused in this paper, covering the scope of thyristor valves' steady state, and transient state. On the basis of the results achieved, a synthetic test circuit of 6500A/50kV for operational tests of thyristor valves used for up to ±800kV HVDC project has newly been set up and already put into service in xi'an high voltage apparatus research institute (XIHARI), China. Some of the results have been adopted also by a new national standard of China.
{"title":"Equivalency of synthetic test circuit used for operational tests of thyristor valves for HVDC","authors":"Zhou Huigao, Yang Xiaohui, Xu Fan","doi":"10.1109/ICEPE-ST.2011.6123023","DOIUrl":"https://doi.org/10.1109/ICEPE-ST.2011.6123023","url":null,"abstract":"With the growth of capacity of high voltage direct current (HVDC) transmission lines, the ratings of thyristor valves, which are one of the most critical equipments, are getting higher and higher. Verification of performance of thyristor valves particularly designed for HVDC project plays an important role in the handover of products between the manufacturer and the client [1]. Conventional test facilities based on philosophy of direct test cannot meet the requirements for modern thyristor valves. New test facilities with high ratings are necessarily built based on philosophy of synthetic test. Over the conventional direct test circuit, the later is an economical and feasible solution with less financial investment and higher test capability. However, the equivalency between the synthetic test and the direct test should be analyzed technically in order to make sure that the condition of verification test in a synthetic test circuit should satisfy the actual operation condition of thyristor valves existing in a real HVDC project, just as in a direct test circuit. Equivalency analysis is focused in this paper, covering the scope of thyristor valves' steady state, and transient state. On the basis of the results achieved, a synthetic test circuit of 6500A/50kV for operational tests of thyristor valves used for up to ±800kV HVDC project has newly been set up and already put into service in xi'an high voltage apparatus research institute (XIHARI), China. Some of the results have been adopted also by a new national standard of China.","PeriodicalId":379448,"journal":{"name":"2011 1st International Conference on Electric Power Equipment - Switching Technology","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129451299","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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