Based on the traditional protection system, a constitution scheme of station domain protection system is proposed. The protection logic signal and the switch status signal output by the existing interval protection device are uploaded to the station domain host through the GOOSE network in accordance with the IEC61850 standard, and then the station domain host quickly and accurately identifies the internal fault according to the protection action signal of each protection device. Finally, issue the trip command to the intelligent terminal through the GOOSE network to clear the fault. The protection mode has good adaptability to the existing intelligent substation standards, and also meets the requirements of on-site operation and maintenance personnel. It can also complete the natural degeneration to the existing protection system under extreme conditions such as station host failure or communication system interruption.
{"title":"Research on Constitution Scheme of Station Domain Protection System","authors":"Liqiang Sun, Xinming Jin, Haibin Chen, Jing Liu, C. Tan, Haiyun Yang, Binbin Zhang","doi":"10.1109/CIEEC.2018.8745775","DOIUrl":"https://doi.org/10.1109/CIEEC.2018.8745775","url":null,"abstract":"Based on the traditional protection system, a constitution scheme of station domain protection system is proposed. The protection logic signal and the switch status signal output by the existing interval protection device are uploaded to the station domain host through the GOOSE network in accordance with the IEC61850 standard, and then the station domain host quickly and accurately identifies the internal fault according to the protection action signal of each protection device. Finally, issue the trip command to the intelligent terminal through the GOOSE network to clear the fault. The protection mode has good adaptability to the existing intelligent substation standards, and also meets the requirements of on-site operation and maintenance personnel. It can also complete the natural degeneration to the existing protection system under extreme conditions such as station host failure or communication system interruption.","PeriodicalId":329285,"journal":{"name":"2018 IEEE 2nd International Electrical and Energy Conference (CIEEC)","volume":"17 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116520290","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 : 2018-11-01DOI: 10.1109/CIEEC.2018.8745835
Chao Yao, Xiaojun Wang, Chengjie Bi, Yizhi Zhang, Cheng Jin
Low-frequency oscillation (LFO) occurs in electrification railway system from time to time, which can lead to traction blockades in electric multiple unit (EMU) depots. When the impedance between the traction network and locomotives in the electrical coupling system does not match, the stability of the electrical coupling system will deteriorate and LFO will occur. There have been some suppression methods from the train side. However, the control strategy and parameters of the electric train is usually complicated and confidential, so these methods from the train side are generally complicated and not entirely practical. Nevertheless, based on impedance matching criterion, the paper proposes an approach to suppress LFO in the traction network of high-speed railway, utilizing Thyristor Controlled Series Compensation (TCSC) in the traction network side. And the effectiveness is verified with MATLAB/Simulink simulations.
{"title":"An Approach to Suppress Low-frequency Oscillation in Electrification Railway Based on TCSC Impedance Control","authors":"Chao Yao, Xiaojun Wang, Chengjie Bi, Yizhi Zhang, Cheng Jin","doi":"10.1109/CIEEC.2018.8745835","DOIUrl":"https://doi.org/10.1109/CIEEC.2018.8745835","url":null,"abstract":"Low-frequency oscillation (LFO) occurs in electrification railway system from time to time, which can lead to traction blockades in electric multiple unit (EMU) depots. When the impedance between the traction network and locomotives in the electrical coupling system does not match, the stability of the electrical coupling system will deteriorate and LFO will occur. There have been some suppression methods from the train side. However, the control strategy and parameters of the electric train is usually complicated and confidential, so these methods from the train side are generally complicated and not entirely practical. Nevertheless, based on impedance matching criterion, the paper proposes an approach to suppress LFO in the traction network of high-speed railway, utilizing Thyristor Controlled Series Compensation (TCSC) in the traction network side. And the effectiveness is verified with MATLAB/Simulink simulations.","PeriodicalId":329285,"journal":{"name":"2018 IEEE 2nd International Electrical and Energy Conference (CIEEC)","volume":"2018 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127582264","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 : 2018-11-01DOI: 10.1109/CIEEC.2018.8745724
Chao Gao, Yang Liu, Song Gao, Bin Cao, Daiming Yang, Liming Wang
The pollution flashover of insulators is the most serious accidents to the safe operation of power grid. Leakage current, as one of parameters for evaluating the pollution degree of insulators, which could be continuous online monitored, have a certain correspondence with some typical discharge phenomena. The on-line monitoring devices of the leakage currents have been installed in many places in Jiangsu Power Grid and a lot of leakage current data have been accumulated, which could be used to effectively evaluate the pollution degree of insulators. In this paper, based on the monitoring data of the leakage current of the actual operating line, the factors affecting the leakage current of the insulator surface, such as seasons, festivals, contamination, rainfalls and temperature difference are analyzed, which might provide references for the pollution warning system.
{"title":"Research on the relationship between leakage current of on-site insulators and environmental factors","authors":"Chao Gao, Yang Liu, Song Gao, Bin Cao, Daiming Yang, Liming Wang","doi":"10.1109/CIEEC.2018.8745724","DOIUrl":"https://doi.org/10.1109/CIEEC.2018.8745724","url":null,"abstract":"The pollution flashover of insulators is the most serious accidents to the safe operation of power grid. Leakage current, as one of parameters for evaluating the pollution degree of insulators, which could be continuous online monitored, have a certain correspondence with some typical discharge phenomena. The on-line monitoring devices of the leakage currents have been installed in many places in Jiangsu Power Grid and a lot of leakage current data have been accumulated, which could be used to effectively evaluate the pollution degree of insulators. In this paper, based on the monitoring data of the leakage current of the actual operating line, the factors affecting the leakage current of the insulator surface, such as seasons, festivals, contamination, rainfalls and temperature difference are analyzed, which might provide references for the pollution warning system.","PeriodicalId":329285,"journal":{"name":"2018 IEEE 2nd International Electrical and Energy Conference (CIEEC)","volume":"37 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133161414","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 : 2018-11-01DOI: 10.1109/CIEEC.2018.8745747
Tianzheng Wang, Tao Jin, Zhumao Lu, Chao Zhang, Guoqiang Liu, Xinzhe Zhao, Cailian Li
Noise barrier with acoustic metamaterial has application prospect in power transformer noise reduction due to its low frequency noise reduction advantages. The acoustic diffraction along the edges of the noise barrier decreases the overall noise reduction obviously. An active noise control (ANC) method combined with noise barrier is proposed to counteract the diffracting sound waves near the edges of the noise barrier. The noise barrier is composed of the Hilbert fractal acoustic metamaterial (HFAMM) units with good sound insulation characteristics at low frequencies. The transmission loss (TL) of the HFAMM unit is higher than 20dB at the main frequencies of the transformer noise theoretically. The experiment system including the acoustic metamaterial noise barrier and the ANC system is established. The sound pressure level with ANC on the specified points in the target area is more than 10dB lower than that without ANC in the experiment. The results prove that the new method is effective for improving noise reduction performance of the noise barriers.
{"title":"Research on Active Noise Control Method Compensating for Acoustic Metamaterial Noise Barrier in Transformer Noise Reduction","authors":"Tianzheng Wang, Tao Jin, Zhumao Lu, Chao Zhang, Guoqiang Liu, Xinzhe Zhao, Cailian Li","doi":"10.1109/CIEEC.2018.8745747","DOIUrl":"https://doi.org/10.1109/CIEEC.2018.8745747","url":null,"abstract":"Noise barrier with acoustic metamaterial has application prospect in power transformer noise reduction due to its low frequency noise reduction advantages. The acoustic diffraction along the edges of the noise barrier decreases the overall noise reduction obviously. An active noise control (ANC) method combined with noise barrier is proposed to counteract the diffracting sound waves near the edges of the noise barrier. The noise barrier is composed of the Hilbert fractal acoustic metamaterial (HFAMM) units with good sound insulation characteristics at low frequencies. The transmission loss (TL) of the HFAMM unit is higher than 20dB at the main frequencies of the transformer noise theoretically. The experiment system including the acoustic metamaterial noise barrier and the ANC system is established. The sound pressure level with ANC on the specified points in the target area is more than 10dB lower than that without ANC in the experiment. The results prove that the new method is effective for improving noise reduction performance of the noise barriers.","PeriodicalId":329285,"journal":{"name":"2018 IEEE 2nd International Electrical and Energy Conference (CIEEC)","volume":"12 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134483717","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 : 2018-11-01DOI: 10.1109/CIEEC.2018.8745725
Xuan Wang, Dan Wu, Menghang Wei, Jiafei Li, Hailong Wang, Qingguang Li
Static Synchronous Series Compensator (SSSC) has great significance for improving the stability of the power grid and enhancing the transmission capability. Recently its usage has been more practical and economical by using multilevel and especially cascaded H-Bridge topologies. The modulation and control strategy based on SSSC based on cascaded H-bridge is represented in this paper firstly. However, the biggest problem of cascaded H-bridge is unbalanced capacitor voltage. Thus, an integrated capacitor voltage balancing control strategy is discussed in order to maintain capacitor voltage balance and stability. The simulation results for the capacitor voltage balance control strategy proposed in this paper verified that the ability of this method to balance the DC bus voltages.
{"title":"The capacitor voltage balancing control strategy based on hierarchical theory in Cascaded H-bridge SSSC","authors":"Xuan Wang, Dan Wu, Menghang Wei, Jiafei Li, Hailong Wang, Qingguang Li","doi":"10.1109/CIEEC.2018.8745725","DOIUrl":"https://doi.org/10.1109/CIEEC.2018.8745725","url":null,"abstract":"Static Synchronous Series Compensator (SSSC) has great significance for improving the stability of the power grid and enhancing the transmission capability. Recently its usage has been more practical and economical by using multilevel and especially cascaded H-Bridge topologies. The modulation and control strategy based on SSSC based on cascaded H-bridge is represented in this paper firstly. However, the biggest problem of cascaded H-bridge is unbalanced capacitor voltage. Thus, an integrated capacitor voltage balancing control strategy is discussed in order to maintain capacitor voltage balance and stability. The simulation results for the capacitor voltage balance control strategy proposed in this paper verified that the ability of this method to balance the DC bus voltages.","PeriodicalId":329285,"journal":{"name":"2018 IEEE 2nd International Electrical and Energy Conference (CIEEC)","volume":"9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122178905","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 : 2018-11-01DOI: 10.1109/CIEEC.2018.8745848
Hua Xie, Hao Chen, Ning Wang, Pei Zhang
More and more photovoltaic generation power has been integrated into the distribution network. Uncertainties of PV generation bring risks to system operation of the distribution network. In this paper, a new method was proposed for risk assessment of distribution network with consideration of multiple PVs’ uncertainties. Firstly, probabilistic characteristics of each PV generation was forecasted using dynamic Bayesian network(DBN). Secondly, multiple PV generation uncertainties were calculated with consideration of the probability of each operating state. And then power network severities in terms of thermal and voltage violations were calculated. Finally, the system risk indices were computed by using probability multiply severity. A practical distribution system with multiple PV generations was used as case study. The research results indicated that the proposed method was effective in evaluating system operation risk and was helpful for system operators.
{"title":"Risk Assessment Method of Distribution Network with considering Multiple Photovoltaic Generations Uncertainties","authors":"Hua Xie, Hao Chen, Ning Wang, Pei Zhang","doi":"10.1109/CIEEC.2018.8745848","DOIUrl":"https://doi.org/10.1109/CIEEC.2018.8745848","url":null,"abstract":"More and more photovoltaic generation power has been integrated into the distribution network. Uncertainties of PV generation bring risks to system operation of the distribution network. In this paper, a new method was proposed for risk assessment of distribution network with consideration of multiple PVs’ uncertainties. Firstly, probabilistic characteristics of each PV generation was forecasted using dynamic Bayesian network(DBN). Secondly, multiple PV generation uncertainties were calculated with consideration of the probability of each operating state. And then power network severities in terms of thermal and voltage violations were calculated. Finally, the system risk indices were computed by using probability multiply severity. A practical distribution system with multiple PV generations was used as case study. The research results indicated that the proposed method was effective in evaluating system operation risk and was helpful for system operators.","PeriodicalId":329285,"journal":{"name":"2018 IEEE 2nd International Electrical and Energy Conference (CIEEC)","volume":"4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131706021","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 : 2018-11-01DOI: 10.1109/CIEEC.2018.8745954
Jin Liu, Yanbo Chen, Q. Zhou, M. Lei, Binjun Yan, Xin Liu
Modern power system is becoming increasingly larger AC-DC hybrid system, and its operating mode is more and more complex. Occasional incidents may cause overload problems, voltage problems, and cascading failures. These problems may damage the system stability. Therefore, in the normal state of the system, it is important to study the state transition and its harm to the system through security analysis. Besides, adopting certain control measures to reduce the risk of the system, such as the coordination of prevention and emergency control, is of great significance to both the safety and the economy of the system. In this premise, this paper proposes a risk-based two-layer optimization model for coordination on prevention control and emergency control of quasi-steady state AC-DC system. By introducing a continuous derivable function, the non-derivable constraints in the traditional model are replaced by continuous derivable constraints. The method can greatly improve the computational efficiency of the model. According to the characteristic of the two-layer optimization model, the first layer optimization problem is solved by the golden section method, and the second layer optimization problem is solved by the active and reactive power alternating approach method. Finally, the effectiveness of the proposed method is verified with simulation example.
{"title":"Risk-Based Coordination Research on Prevention Control and Emergency Control of Quasi-Steady State AC-DC System","authors":"Jin Liu, Yanbo Chen, Q. Zhou, M. Lei, Binjun Yan, Xin Liu","doi":"10.1109/CIEEC.2018.8745954","DOIUrl":"https://doi.org/10.1109/CIEEC.2018.8745954","url":null,"abstract":"Modern power system is becoming increasingly larger AC-DC hybrid system, and its operating mode is more and more complex. Occasional incidents may cause overload problems, voltage problems, and cascading failures. These problems may damage the system stability. Therefore, in the normal state of the system, it is important to study the state transition and its harm to the system through security analysis. Besides, adopting certain control measures to reduce the risk of the system, such as the coordination of prevention and emergency control, is of great significance to both the safety and the economy of the system. In this premise, this paper proposes a risk-based two-layer optimization model for coordination on prevention control and emergency control of quasi-steady state AC-DC system. By introducing a continuous derivable function, the non-derivable constraints in the traditional model are replaced by continuous derivable constraints. The method can greatly improve the computational efficiency of the model. According to the characteristic of the two-layer optimization model, the first layer optimization problem is solved by the golden section method, and the second layer optimization problem is solved by the active and reactive power alternating approach method. Finally, the effectiveness of the proposed method is verified with simulation example.","PeriodicalId":329285,"journal":{"name":"2018 IEEE 2nd International Electrical and Energy Conference (CIEEC)","volume":"100 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122415216","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 : 2018-11-01DOI: 10.1109/CIEEC.2018.8745777
Xi Chen, Yongkang Zheng, Z. Jiao, Jin Qin, Daqian Shen, Q. Mo
Smart grid emphasizes identifiability, controllability, unified coordination ability, safety and stability of power grids. In the process of building smart grids, the requirements of transmission lines are mainly reflected in two aspects: state monitoring and transmission capacity of line. Realizing the monitoring of transmission line status, could timely discover hidden failure of transmission line and reduce the number of power failure, ensuring safe and stable operation of transmission lines. The excavation of the transmission capacity is reflected in timely adjustment of the current capacity to maximize the capacity of the transmission line. This paper proposed from the demand of smart grid construction, and combine the output status information of smart substation to realize the real-time status monitoring of transmission lines, and then supporting the condition maintenance of transmission lines and improving the management level of transmission assets. At the same time, through the on-line monitoring of the line temperature and the meteorological environment of the transmission line, comprehensively collect data for calculation analysis and verification to achieve the purpose of dynamic capacity-increase of the transmission line.
{"title":"Research on Real-time Condition Monitoring and Dynamic Capacity-increase of Transmission Lines","authors":"Xi Chen, Yongkang Zheng, Z. Jiao, Jin Qin, Daqian Shen, Q. Mo","doi":"10.1109/CIEEC.2018.8745777","DOIUrl":"https://doi.org/10.1109/CIEEC.2018.8745777","url":null,"abstract":"Smart grid emphasizes identifiability, controllability, unified coordination ability, safety and stability of power grids. In the process of building smart grids, the requirements of transmission lines are mainly reflected in two aspects: state monitoring and transmission capacity of line. Realizing the monitoring of transmission line status, could timely discover hidden failure of transmission line and reduce the number of power failure, ensuring safe and stable operation of transmission lines. The excavation of the transmission capacity is reflected in timely adjustment of the current capacity to maximize the capacity of the transmission line. This paper proposed from the demand of smart grid construction, and combine the output status information of smart substation to realize the real-time status monitoring of transmission lines, and then supporting the condition maintenance of transmission lines and improving the management level of transmission assets. At the same time, through the on-line monitoring of the line temperature and the meteorological environment of the transmission line, comprehensively collect data for calculation analysis and verification to achieve the purpose of dynamic capacity-increase of the transmission line.","PeriodicalId":329285,"journal":{"name":"2018 IEEE 2nd International Electrical and Energy Conference (CIEEC)","volume":"23 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121962623","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 : 2018-11-01DOI: 10.1109/CIEEC.2018.8745906
Liu Chaoqun, Wu Xiaokang, Wei Bin, G. Yan
In recent years, the development of wireless charging Electric Vehicles (EV) is becoming more and more rapid, because the new energy supply mode----wireless power charging has the advantages of high space utilization, high security, more convenience, stronger user experience. The Influence of charging on life safety, as the research hotspot of EV's wireless charging, has attracted more and more attention and research at home and abroad. The electromagnetic safety evaluation in this article not only provides a theoretical foundation for the life safety analysis of EV's wireless charging, but also is conducive to the future application development. In this study, under the condition of transmission frequency and output power of 85 kHz and 11.4 kW respectively, the models of EV coil and adult body are simulated. The results of safety range and electromagnetic intensity in different positions are obtained and contrasted with International Commission for Non-Ionizing Radiation Protection (ICNIRP) standard. In order to confirm the reliability of the simulation results, we set up the experimental prototype about EV's wireless charging and do the electromagnetic exposure measurement. Finally the electromagnetic safety evaluation of EV charging system is carried out from the perspective of molecular biological experiments.
{"title":"Research on Influence of the Electric Vehicle on Life Safety During the Wireless Charging Process","authors":"Liu Chaoqun, Wu Xiaokang, Wei Bin, G. Yan","doi":"10.1109/CIEEC.2018.8745906","DOIUrl":"https://doi.org/10.1109/CIEEC.2018.8745906","url":null,"abstract":"In recent years, the development of wireless charging Electric Vehicles (EV) is becoming more and more rapid, because the new energy supply mode----wireless power charging has the advantages of high space utilization, high security, more convenience, stronger user experience. The Influence of charging on life safety, as the research hotspot of EV's wireless charging, has attracted more and more attention and research at home and abroad. The electromagnetic safety evaluation in this article not only provides a theoretical foundation for the life safety analysis of EV's wireless charging, but also is conducive to the future application development. In this study, under the condition of transmission frequency and output power of 85 kHz and 11.4 kW respectively, the models of EV coil and adult body are simulated. The results of safety range and electromagnetic intensity in different positions are obtained and contrasted with International Commission for Non-Ionizing Radiation Protection (ICNIRP) standard. In order to confirm the reliability of the simulation results, we set up the experimental prototype about EV's wireless charging and do the electromagnetic exposure measurement. Finally the electromagnetic safety evaluation of EV charging system is carried out from the perspective of molecular biological experiments.","PeriodicalId":329285,"journal":{"name":"2018 IEEE 2nd International Electrical and Energy Conference (CIEEC)","volume":"54 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121115916","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 : 2018-11-01DOI: 10.1109/CIEEC.2018.8745916
S. Bai, Lin-cui Zeng, Liyi, Xiao-Hua Wang, M. Rong
As the key equipment for a new generation of smart substations, the data measurement of electronic instrument transformers is the only basis for the protection calculations performed by the spacer device. Therefore, the accuracy of the measurement is critical to the safe operation of the entire substation. As an entry point from actual project application, this article takes dual-AD sampling data inconsistency of output protection current in the merging unit of the electronic instrument transformer, and based on the specific configuration of the project and the alarm phenomenon, a deep research and analysis was carried out to explain the causes in inconsistency between the dual ADs and the corresponding solutions from the aspects of secondary conditioning circuit, AD sampling and merging unit data processing of the electronic instrument transformer collector. This scheme has been successfully applied in engineering practice. The problem analysis and solutions proposed in this paper provide a further reference for the reliability design of electronic instrument transformers.
{"title":"Research on Inconsistent Acquisition of Dual AD in Protection Current of Electronic Instrument Transformer","authors":"S. Bai, Lin-cui Zeng, Liyi, Xiao-Hua Wang, M. Rong","doi":"10.1109/CIEEC.2018.8745916","DOIUrl":"https://doi.org/10.1109/CIEEC.2018.8745916","url":null,"abstract":"As the key equipment for a new generation of smart substations, the data measurement of electronic instrument transformers is the only basis for the protection calculations performed by the spacer device. Therefore, the accuracy of the measurement is critical to the safe operation of the entire substation. As an entry point from actual project application, this article takes dual-AD sampling data inconsistency of output protection current in the merging unit of the electronic instrument transformer, and based on the specific configuration of the project and the alarm phenomenon, a deep research and analysis was carried out to explain the causes in inconsistency between the dual ADs and the corresponding solutions from the aspects of secondary conditioning circuit, AD sampling and merging unit data processing of the electronic instrument transformer collector. This scheme has been successfully applied in engineering practice. The problem analysis and solutions proposed in this paper provide a further reference for the reliability design of electronic instrument transformers.","PeriodicalId":329285,"journal":{"name":"2018 IEEE 2nd International Electrical and Energy Conference (CIEEC)","volume":"47 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116208289","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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