Pub Date : 2016-10-01DOI: 10.1109/APPEEC.2016.7779686
Yanhong Wang, N. Tai, Wentao Huang, Shuo Liang
To make full use of the battery storage, this paper proposes a rolling coordination control scheme of the wind-storage hybrid system based on the ultra-short term wind forecast. The whole aim is to alleviate the wind power fluctuation and to compensate the forecast error simultaneously. The scheme starts with optimizing the filter coefficient (FC) applied for wind power smoothing with particle swarm optimization (PSO) algorithm. The ultra-short wind power forecast and the battery state of charge (SOC) are employed to generate the optimization model. Further amendment of the forecast error is performed based on the optimal smoothed wind power. A coordination control scheme with active energy feedback to rectify battery output power is put forward. The simulation results indicate that the proposed method is capable of mitigating wind power fluctuation. Meanwhile the performance of the hybrid system in tracking the forecast power is enhanced. Besides, by means of pre-charge and pre-discharge, the SOC of the battery can be well dynamically regulated, which promotes its long term in-service capability.
{"title":"Rolling coordination control of the wind-storage hybrid system based on the ultra-short term wind forecast","authors":"Yanhong Wang, N. Tai, Wentao Huang, Shuo Liang","doi":"10.1109/APPEEC.2016.7779686","DOIUrl":"https://doi.org/10.1109/APPEEC.2016.7779686","url":null,"abstract":"To make full use of the battery storage, this paper proposes a rolling coordination control scheme of the wind-storage hybrid system based on the ultra-short term wind forecast. The whole aim is to alleviate the wind power fluctuation and to compensate the forecast error simultaneously. The scheme starts with optimizing the filter coefficient (FC) applied for wind power smoothing with particle swarm optimization (PSO) algorithm. The ultra-short wind power forecast and the battery state of charge (SOC) are employed to generate the optimization model. Further amendment of the forecast error is performed based on the optimal smoothed wind power. A coordination control scheme with active energy feedback to rectify battery output power is put forward. The simulation results indicate that the proposed method is capable of mitigating wind power fluctuation. Meanwhile the performance of the hybrid system in tracking the forecast power is enhanced. Besides, by means of pre-charge and pre-discharge, the SOC of the battery can be well dynamically regulated, which promotes its long term in-service capability.","PeriodicalId":117485,"journal":{"name":"2016 IEEE PES Asia-Pacific Power and Energy Engineering Conference (APPEEC)","volume":"37 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125683224","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 : 2016-10-01DOI: 10.1109/APPEEC.2016.7779679
Haoran Zhao, Qiuwei Wu, Shaojun Huang, Zhaoxi Liu
This paper investigates the efficacy of Demand Frequency Reserve (DFR) in Nordic power system. Heat pump, due to its switching flexibility, less disturbing impacts to customers and promising future in application, is used to represent DFR in the study. Thermodynamics of the heat pump unit is modelled to investigate the dynamic behaviour of DFR. Two DFR control logics, designed according to different appliance features, are implemented into the heat pump model. In this study, DFR acts as both disturbance and normal operation reserves to fulfill the requirement of frequency reserve by Danish Transmission System Operator (TSO). Accordingly, two case scenarios are designed for the contingency and normal operation, respectively. The simulation models are implemented in RTDS, by means of which the Hardware In the Loop (HIL) test of the developed frequency response device (SmartBox) is carried out.
{"title":"Study of demand as frequency controlled reserve in Nordic power system","authors":"Haoran Zhao, Qiuwei Wu, Shaojun Huang, Zhaoxi Liu","doi":"10.1109/APPEEC.2016.7779679","DOIUrl":"https://doi.org/10.1109/APPEEC.2016.7779679","url":null,"abstract":"This paper investigates the efficacy of Demand Frequency Reserve (DFR) in Nordic power system. Heat pump, due to its switching flexibility, less disturbing impacts to customers and promising future in application, is used to represent DFR in the study. Thermodynamics of the heat pump unit is modelled to investigate the dynamic behaviour of DFR. Two DFR control logics, designed according to different appliance features, are implemented into the heat pump model. In this study, DFR acts as both disturbance and normal operation reserves to fulfill the requirement of frequency reserve by Danish Transmission System Operator (TSO). Accordingly, two case scenarios are designed for the contingency and normal operation, respectively. The simulation models are implemented in RTDS, by means of which the Hardware In the Loop (HIL) test of the developed frequency response device (SmartBox) is carried out.","PeriodicalId":117485,"journal":{"name":"2016 IEEE PES Asia-Pacific Power and Energy Engineering Conference (APPEEC)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130790294","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 : 2016-10-01DOI: 10.1109/APPEEC.2016.7779890
Songhao Yang, Baohui Zhang, M. Hojo, K. Yamanaka
This paper proposes a novel method for optimization of Phasor Measurement unit (PMU) placements. The method aims to reduce the number of PMUs on generators and still well represent the transient stability of power system. There are two steps in this scheme: firstly, the generators are divided into some groups depending on their performance in steady and transient state. Secondly, the representative generators are selected in each groups based on proposed selection criterion, where PMUs should be installed. The validity of the proposed method is verified in the IEEE 39 bus standard power system. Simulation results show the transient stability of power system can be represented well by proposed PMU placement scheme.
{"title":"An optimal scheme for PMU placement based on generators grouping","authors":"Songhao Yang, Baohui Zhang, M. Hojo, K. Yamanaka","doi":"10.1109/APPEEC.2016.7779890","DOIUrl":"https://doi.org/10.1109/APPEEC.2016.7779890","url":null,"abstract":"This paper proposes a novel method for optimization of Phasor Measurement unit (PMU) placements. The method aims to reduce the number of PMUs on generators and still well represent the transient stability of power system. There are two steps in this scheme: firstly, the generators are divided into some groups depending on their performance in steady and transient state. Secondly, the representative generators are selected in each groups based on proposed selection criterion, where PMUs should be installed. The validity of the proposed method is verified in the IEEE 39 bus standard power system. Simulation results show the transient stability of power system can be represented well by proposed PMU placement scheme.","PeriodicalId":117485,"journal":{"name":"2016 IEEE PES Asia-Pacific Power and Energy Engineering Conference (APPEEC)","volume":"23 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130941837","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 : 2016-10-01DOI: 10.1109/APPEEC.2016.7779815
Mengsheng Zhang, Yi Wang, Zhiguo Zhou, Zufu Li
Accurate fault location is beneficial for the stability of power distribution network. With the access of distributed energy resource, such as distributed generations, electric vehicles, controllable load and so on, traditional fault and protection device has been unable to completely adopt to the new situation of distribution network protection, which requires new technologies and devices. In this paper, a new method based on phasor measurement unit, termed PMU or synchrophasor, is proposed to locate the fault in the multi-source distribution network. The location method uses the voltage and current information of PMU on one terminal to iterating every line segment, the candidate faults and its fault distance are calculated. By means of voltage phase relationship between fault voltage and measured voltage of PMUs on two terminals to get the actual fault location and eliminate the pseudo fault locations, with the characteristic of high-precision and clock synchronization in PMU. Finally, the simulation results show that the location method has high position accuracy in the multi-source distribution network by the algorithm simulation analysis based on Matlab/Simulink platform. The method can satisfy different types of fault with simply installing PMUs only on the two terminals of the circuit. And still has high location accuracy with the influence of high DG penetration and high resistance faults.
{"title":"Research on fault location based on PMU for multi-source distribution network","authors":"Mengsheng Zhang, Yi Wang, Zhiguo Zhou, Zufu Li","doi":"10.1109/APPEEC.2016.7779815","DOIUrl":"https://doi.org/10.1109/APPEEC.2016.7779815","url":null,"abstract":"Accurate fault location is beneficial for the stability of power distribution network. With the access of distributed energy resource, such as distributed generations, electric vehicles, controllable load and so on, traditional fault and protection device has been unable to completely adopt to the new situation of distribution network protection, which requires new technologies and devices. In this paper, a new method based on phasor measurement unit, termed PMU or synchrophasor, is proposed to locate the fault in the multi-source distribution network. The location method uses the voltage and current information of PMU on one terminal to iterating every line segment, the candidate faults and its fault distance are calculated. By means of voltage phase relationship between fault voltage and measured voltage of PMUs on two terminals to get the actual fault location and eliminate the pseudo fault locations, with the characteristic of high-precision and clock synchronization in PMU. Finally, the simulation results show that the location method has high position accuracy in the multi-source distribution network by the algorithm simulation analysis based on Matlab/Simulink platform. The method can satisfy different types of fault with simply installing PMUs only on the two terminals of the circuit. And still has high location accuracy with the influence of high DG penetration and high resistance faults.","PeriodicalId":117485,"journal":{"name":"2016 IEEE PES Asia-Pacific Power and Energy Engineering Conference (APPEEC)","volume":"22 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130415017","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 : 2016-10-01DOI: 10.1109/APPEEC.2016.7779700
Oleg Valgaev, F. Kupzog
Buildings, acting as flexible loads have been often proposed to mitigate the volatility of the renewable energy sources. However, an accurate building power demand forecast is indispensable to effectively manage the load flexibility. In this publication, we make an initial proposition for a universal short term load forecasting model for buildings, based on K-nearest neighbors approach. The proposed model is parametrized automatically, and provides a forecast using only historic building load measurements as an input. Therefore, it does not require any manual setup and we apply it on a large sample of simulated mixed-usage buildings of different size. Thereby, model accuracy is shown to be superior to the forecast obtained using individual load profiles created for each building.
{"title":"Building power demand forecasting using K-nearest neighbors model - initial approach","authors":"Oleg Valgaev, F. Kupzog","doi":"10.1109/APPEEC.2016.7779700","DOIUrl":"https://doi.org/10.1109/APPEEC.2016.7779700","url":null,"abstract":"Buildings, acting as flexible loads have been often proposed to mitigate the volatility of the renewable energy sources. However, an accurate building power demand forecast is indispensable to effectively manage the load flexibility. In this publication, we make an initial proposition for a universal short term load forecasting model for buildings, based on K-nearest neighbors approach. The proposed model is parametrized automatically, and provides a forecast using only historic building load measurements as an input. Therefore, it does not require any manual setup and we apply it on a large sample of simulated mixed-usage buildings of different size. Thereby, model accuracy is shown to be superior to the forecast obtained using individual load profiles created for each building.","PeriodicalId":117485,"journal":{"name":"2016 IEEE PES Asia-Pacific Power and Energy Engineering Conference (APPEEC)","volume":"26 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127857683","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 : 2016-10-01DOI: 10.1109/APPEEC.2016.7779566
Jiangtao Li, M. Zheng, Hui Cao, Zheng Zhao, Yue Gu, Tao Li, Z. Li, Yi Sun, Yuhao Liu, S. Ai, Lin Wang
With the expansion of the grid scale, short-circuit current is increasing, the safety of grid is seriously impacted by the short-circuit current. Therefore, a new technique of energy-saving transformer possessing variable impedance is proposed. This transformer combines the advantages of the high impedance transformer and fault current limiter, it can reduce the impact of short-circuit current and also take the economy into account. The principle of variable impedance transformer was introduced, PSCAD simulation software was used to analyze the current limiting capacity and the distribution of overvoltage of transformer. Researches indicated that variable impedance transformer could improve the ability to withstand short circuit current impulse through the adjustment of the impedance, short circuit current could be reduced by 40.2%, and the overvoltage could be restrained by novel suppression measure.
{"title":"Current limiting ability and overvoltage analysis of variable impedance transformer","authors":"Jiangtao Li, M. Zheng, Hui Cao, Zheng Zhao, Yue Gu, Tao Li, Z. Li, Yi Sun, Yuhao Liu, S. Ai, Lin Wang","doi":"10.1109/APPEEC.2016.7779566","DOIUrl":"https://doi.org/10.1109/APPEEC.2016.7779566","url":null,"abstract":"With the expansion of the grid scale, short-circuit current is increasing, the safety of grid is seriously impacted by the short-circuit current. Therefore, a new technique of energy-saving transformer possessing variable impedance is proposed. This transformer combines the advantages of the high impedance transformer and fault current limiter, it can reduce the impact of short-circuit current and also take the economy into account. The principle of variable impedance transformer was introduced, PSCAD simulation software was used to analyze the current limiting capacity and the distribution of overvoltage of transformer. Researches indicated that variable impedance transformer could improve the ability to withstand short circuit current impulse through the adjustment of the impedance, short circuit current could be reduced by 40.2%, and the overvoltage could be restrained by novel suppression measure.","PeriodicalId":117485,"journal":{"name":"2016 IEEE PES Asia-Pacific Power and Energy Engineering Conference (APPEEC)","volume":"125 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131723970","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 : 2016-10-01DOI: 10.1109/APPEEC.2016.7779776
Yiming Zheng, Wenhao Wang, W. He, Hao-jun Liu, Xiang Sun, J. Zhan, Guoping Zou
So as to adapt to the condition-based maintenance of power equipment and to overcome the disadvantages and deficiencies of traditional condition evaluation model in data acquisition approaches, component classifications, performance indicators and scoring model, a comprehensive condition evaluation model (CCEM) was proposed in this paper based on multi-source information. Combined with the offline test, online detection, online monitoring, inspection and operating environment, equipment criteria, undesirable service condition (USC) and family defects were reclassified in this model. Practice example verified that the proposed model can describe the power transformer state more comprehensively and immediately. The evaluation results provide scientific guidance for front-line operation and maintenance staffs to develop equipment maintenance strategy, and also practical basis for the condition evaluation of other power equipment.
{"title":"Multi-source information based comprehensive condition evaluation model for power transformer","authors":"Yiming Zheng, Wenhao Wang, W. He, Hao-jun Liu, Xiang Sun, J. Zhan, Guoping Zou","doi":"10.1109/APPEEC.2016.7779776","DOIUrl":"https://doi.org/10.1109/APPEEC.2016.7779776","url":null,"abstract":"So as to adapt to the condition-based maintenance of power equipment and to overcome the disadvantages and deficiencies of traditional condition evaluation model in data acquisition approaches, component classifications, performance indicators and scoring model, a comprehensive condition evaluation model (CCEM) was proposed in this paper based on multi-source information. Combined with the offline test, online detection, online monitoring, inspection and operating environment, equipment criteria, undesirable service condition (USC) and family defects were reclassified in this model. Practice example verified that the proposed model can describe the power transformer state more comprehensively and immediately. The evaluation results provide scientific guidance for front-line operation and maintenance staffs to develop equipment maintenance strategy, and also practical basis for the condition evaluation of other power equipment.","PeriodicalId":117485,"journal":{"name":"2016 IEEE PES Asia-Pacific Power and Energy Engineering Conference (APPEEC)","volume":"96 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129175156","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}
Due to the modularity, scalability and low loss compared with the traditional VSC converter, MMC based converter has raised a research hotspot in the field of direct-current transmission and direct-current distribution. Different from the direct-current transmission, the voltage level for direct-current distribution is relative low, resulting in a relative low level of the output waveforms. So the stair-case modulation, which may introduce numerous harmonic in low level, is not applicable to the direct-current distribution. To resolve this problem, we propose an improved carrier phase-shifted SPWM (ICPS-SPWM) in this paper, which is easier for digital implementation and has a better harmonic performance compared with traditional one. Besides, based on the improved carrier phase-shifted SPWM (ICPS-SPWM), a unified modulation is proposed, which can switch between ICPS-SPWM and space-vector PWM modulation (SVPWM) for multilevel easily and flexibly. In the end, simulation based on Matlab is presented to validate the effectiveness of the proposed modulation strategy.
{"title":"An improved CPS-SPWM and unified modulation strategy for multilevel converter","authors":"Haitao Zhang, Yongqing Meng, Xiuli Wang, Yuntao Zou, Xiong Wu, Chunyang Liu, Qian Zhou, Weiping Zhu","doi":"10.1109/APPEEC.2016.7779705","DOIUrl":"https://doi.org/10.1109/APPEEC.2016.7779705","url":null,"abstract":"Due to the modularity, scalability and low loss compared with the traditional VSC converter, MMC based converter has raised a research hotspot in the field of direct-current transmission and direct-current distribution. Different from the direct-current transmission, the voltage level for direct-current distribution is relative low, resulting in a relative low level of the output waveforms. So the stair-case modulation, which may introduce numerous harmonic in low level, is not applicable to the direct-current distribution. To resolve this problem, we propose an improved carrier phase-shifted SPWM (ICPS-SPWM) in this paper, which is easier for digital implementation and has a better harmonic performance compared with traditional one. Besides, based on the improved carrier phase-shifted SPWM (ICPS-SPWM), a unified modulation is proposed, which can switch between ICPS-SPWM and space-vector PWM modulation (SVPWM) for multilevel easily and flexibly. In the end, simulation based on Matlab is presented to validate the effectiveness of the proposed modulation strategy.","PeriodicalId":117485,"journal":{"name":"2016 IEEE PES Asia-Pacific Power and Energy Engineering Conference (APPEEC)","volume":"111 6 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128870930","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 : 2016-10-01DOI: 10.1109/APPEEC.2016.7779907
He Shien, Lu Liang, Li Jin, Dong Xinzhou, S. Shenxing, Wang Bin
In the light of the operation of Jiuquan wind power base in recent years, the new relaying protection methods for enhancing the accommodation and transmission of large scale wind power are proposed from the system perspective, including the criterion of flow fluctuation based on the statistical analysis, the flow transfer recognition based on the local information, the adaptive overload protection, the fusion of the protection relay and the emergency control. On the basis of theoretical investigation and simulation, a protection device is developed and the correctness of the new methods is tested.
{"title":"Research on the system protection for enhancing the accommodation and transmission of large scale Wind Power","authors":"He Shien, Lu Liang, Li Jin, Dong Xinzhou, S. Shenxing, Wang Bin","doi":"10.1109/APPEEC.2016.7779907","DOIUrl":"https://doi.org/10.1109/APPEEC.2016.7779907","url":null,"abstract":"In the light of the operation of Jiuquan wind power base in recent years, the new relaying protection methods for enhancing the accommodation and transmission of large scale wind power are proposed from the system perspective, including the criterion of flow fluctuation based on the statistical analysis, the flow transfer recognition based on the local information, the adaptive overload protection, the fusion of the protection relay and the emergency control. On the basis of theoretical investigation and simulation, a protection device is developed and the correctness of the new methods is tested.","PeriodicalId":117485,"journal":{"name":"2016 IEEE PES Asia-Pacific Power and Energy Engineering Conference (APPEEC)","volume":"38 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125478041","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 : 2016-10-01DOI: 10.1109/APPEEC.2016.7779931
Zheng Shao, Liancheng Wang, H. Zhang
The fault mechanism of small current grounding system for single-line-to-ground (SLG) faults and the functions of big data techniques are discussed. A new fault line selecting method for SLG faults based on big data theory is proposed. The method resolves the problem of detecting fault lines by making use of a mass of data from the grid which consists of both electrical and non-electrical quantities. Some unstructured data is preprocessed to feature information of faults, and data mining techniques are used to learn the complex nonlinear mapping relation between data and fault lines. Whenever a new grounding fault occurs, the mapping relation can be used to select the fault line. The small current grounding system is modeled by simulation software PSCAD and data is analyzed by a software package MATLAB and SPSS Modeler, and the result shows that this method works effectively and improves the accuracy of fault line selection.
{"title":"A fault line selection method for small current grounding system based on big data","authors":"Zheng Shao, Liancheng Wang, H. Zhang","doi":"10.1109/APPEEC.2016.7779931","DOIUrl":"https://doi.org/10.1109/APPEEC.2016.7779931","url":null,"abstract":"The fault mechanism of small current grounding system for single-line-to-ground (SLG) faults and the functions of big data techniques are discussed. A new fault line selecting method for SLG faults based on big data theory is proposed. The method resolves the problem of detecting fault lines by making use of a mass of data from the grid which consists of both electrical and non-electrical quantities. Some unstructured data is preprocessed to feature information of faults, and data mining techniques are used to learn the complex nonlinear mapping relation between data and fault lines. Whenever a new grounding fault occurs, the mapping relation can be used to select the fault line. The small current grounding system is modeled by simulation software PSCAD and data is analyzed by a software package MATLAB and SPSS Modeler, and the result shows that this method works effectively and improves the accuracy of fault line selection.","PeriodicalId":117485,"journal":{"name":"2016 IEEE PES Asia-Pacific Power and Energy Engineering Conference (APPEEC)","volume":"47 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123167453","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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