Pub Date : 2012-05-21DOI: 10.1109/ISGT-ASIA.2012.6303273
Jidong Wang, Meicui Qin, Guanqing Yang
The combination of space vector and one-cycle control method could make the controller structure much simple in three-phase three-wire active power filter (APF) with one-cycle control method. But in traditional methods, 6 sextants are divided at a frequency cycle in the whole range of space vector area. In this paper, the whole 6 sextants are divided in a novel method and section 1&2, section 3&4, section 5&6 can be merged respectively, and so only 3 sextants are required for the realization of space vector. As a result, the implementation of the controller is much simple. Simulation results show that the proposed method has a good compensation effect and validate the method is feasible and effective.
{"title":"Simulation of three-phase three-wire APF with modified one-cycle control based on space vector","authors":"Jidong Wang, Meicui Qin, Guanqing Yang","doi":"10.1109/ISGT-ASIA.2012.6303273","DOIUrl":"https://doi.org/10.1109/ISGT-ASIA.2012.6303273","url":null,"abstract":"The combination of space vector and one-cycle control method could make the controller structure much simple in three-phase three-wire active power filter (APF) with one-cycle control method. But in traditional methods, 6 sextants are divided at a frequency cycle in the whole range of space vector area. In this paper, the whole 6 sextants are divided in a novel method and section 1&2, section 3&4, section 5&6 can be merged respectively, and so only 3 sextants are required for the realization of space vector. As a result, the implementation of the controller is much simple. Simulation results show that the proposed method has a good compensation effect and validate the method is feasible and effective.","PeriodicalId":330758,"journal":{"name":"IEEE PES Innovative Smart Grid Technologies","volume":"29 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-05-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126823625","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 : 2012-05-21DOI: 10.1109/ISGT-ASIA.2012.6303159
Yixin Yu, Yanli Liu
A comprehensive framework for probabilistic vulnerability assessment based on two level system model is presented. The impact of both internal and external factors on power system is incorporated in this method. The probability distribution of vulnerability is used as the measure of system vulnerability. An effective method to implement the model in multi-machine power systems is developed and an illustrative example is given. The result shows that the method can give system vulnerability level in real time, evaluate the effect of system control, and assess the sensitivity to the external interference.
{"title":"Two level system model based probabilistic vulnerability assessment","authors":"Yixin Yu, Yanli Liu","doi":"10.1109/ISGT-ASIA.2012.6303159","DOIUrl":"https://doi.org/10.1109/ISGT-ASIA.2012.6303159","url":null,"abstract":"A comprehensive framework for probabilistic vulnerability assessment based on two level system model is presented. The impact of both internal and external factors on power system is incorporated in this method. The probability distribution of vulnerability is used as the measure of system vulnerability. An effective method to implement the model in multi-machine power systems is developed and an illustrative example is given. The result shows that the method can give system vulnerability level in real time, evaluate the effect of system control, and assess the sensitivity to the external interference.","PeriodicalId":330758,"journal":{"name":"IEEE PES Innovative Smart Grid Technologies","volume":"57 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-05-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126007730","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 : 2012-05-21DOI: 10.1109/ISGT-ASIA.2012.6303195
Xueting Li, Hongtao Wang
To study the potential impact of the ever-increasing wind farm on future power grid, realistic long term time series of future wind generation at individual sites as well as for the system as a whole are required. This paper proposes a method to simulate time series of hourly wind speed. An ARMA(p, q) model with transformation procedure to a stationary process is chose to simulate the hourly wind speed for it can reflect the time sequential, statistical and stochastic characteristics. Ten years of hourly wind speed data are used to collect characteristic indices such as seasonal and diurnal patterns, autocorrelation and partial autocorrelation parameters. Wind farm output data in a whole year are reconstructed with diurnal and monthly pattern features. Comparison is made between the generated and real series of wind power in an aspect of probability distribution. The result demonstrates that the method is proper.
{"title":"Stochastic time series reconstruction of future wind farm output","authors":"Xueting Li, Hongtao Wang","doi":"10.1109/ISGT-ASIA.2012.6303195","DOIUrl":"https://doi.org/10.1109/ISGT-ASIA.2012.6303195","url":null,"abstract":"To study the potential impact of the ever-increasing wind farm on future power grid, realistic long term time series of future wind generation at individual sites as well as for the system as a whole are required. This paper proposes a method to simulate time series of hourly wind speed. An ARMA(p, q) model with transformation procedure to a stationary process is chose to simulate the hourly wind speed for it can reflect the time sequential, statistical and stochastic characteristics. Ten years of hourly wind speed data are used to collect characteristic indices such as seasonal and diurnal patterns, autocorrelation and partial autocorrelation parameters. Wind farm output data in a whole year are reconstructed with diurnal and monthly pattern features. Comparison is made between the generated and real series of wind power in an aspect of probability distribution. The result demonstrates that the method is proper.","PeriodicalId":330758,"journal":{"name":"IEEE PES Innovative Smart Grid Technologies","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-05-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125426947","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 : 2012-05-21DOI: 10.1109/ISGT-ASIA.2012.6303198
L. Li, X. Ge, Y. B. Zhang
At present, the business model for E-mobility services has become a core issue. A sound business model should be able to guarantee the sustainable development of E-mobility services and effectively promote the rapid development of electric vehicle (EV) industry. The optimization of overall benefits for the whole industry chain should be the prime principle in the design of business model. A set of metrics for evaluating the overall benefits for the whole EV industry chain are presented, together with a model to realize the evaluation. Based on the evaluation, the advantages and disadvantages of each type of E-mobility services are compared and identified. Aiming at maximizing the overall benefits for the whole EV industry chain, a business model for E-mobility services in China is proposed with consideration of actual national conditions, which would be an effective reference for the next-step construction and operation of E-mobility services network in China.
{"title":"A business model for E-mobility services in China with consideration of the optimization of overall benefits for the whole industry chain","authors":"L. Li, X. Ge, Y. B. Zhang","doi":"10.1109/ISGT-ASIA.2012.6303198","DOIUrl":"https://doi.org/10.1109/ISGT-ASIA.2012.6303198","url":null,"abstract":"At present, the business model for E-mobility services has become a core issue. A sound business model should be able to guarantee the sustainable development of E-mobility services and effectively promote the rapid development of electric vehicle (EV) industry. The optimization of overall benefits for the whole industry chain should be the prime principle in the design of business model. A set of metrics for evaluating the overall benefits for the whole EV industry chain are presented, together with a model to realize the evaluation. Based on the evaluation, the advantages and disadvantages of each type of E-mobility services are compared and identified. Aiming at maximizing the overall benefits for the whole EV industry chain, a business model for E-mobility services in China is proposed with consideration of actual national conditions, which would be an effective reference for the next-step construction and operation of E-mobility services network in China.","PeriodicalId":330758,"journal":{"name":"IEEE PES Innovative Smart Grid Technologies","volume":"45 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-05-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117339714","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 : 2012-05-21DOI: 10.1109/ISGT-ASIA.2012.6303224
Junwei Liu, Ming Zhou, Xue-yan Mao, Qiubing Wu
In aspect of capacity, wind power generation and traditional power generation is inner connected. The capacity credit is a convenient and effective way to compare these two different types of power generation. Capacity credit of wind power (CCOWF) is presented in this paper, as well as a calculation method of CCOWF based on probabilistic production simulation (PPS), this method is based on sequence operation theory (SOT) and considers both the probabilistic of load and power generation. Considering the loss of load expectation (LOLE) is unchanged with the accessing of wind power and shutting some gas-guzzling thermal power down. The corresponding software is programmed, and the diagrammatic method is developed to calculate and the CCOWF of IEEE-RTS79 test system. In the end, the application of CCOWF in aspect of calculating the ability of peak load regulation and the capacity of spinning reserve is short presented.
{"title":"Calculation of wind-farm capacity credit based on probabilistic production simulation and its application","authors":"Junwei Liu, Ming Zhou, Xue-yan Mao, Qiubing Wu","doi":"10.1109/ISGT-ASIA.2012.6303224","DOIUrl":"https://doi.org/10.1109/ISGT-ASIA.2012.6303224","url":null,"abstract":"In aspect of capacity, wind power generation and traditional power generation is inner connected. The capacity credit is a convenient and effective way to compare these two different types of power generation. Capacity credit of wind power (CCOWF) is presented in this paper, as well as a calculation method of CCOWF based on probabilistic production simulation (PPS), this method is based on sequence operation theory (SOT) and considers both the probabilistic of load and power generation. Considering the loss of load expectation (LOLE) is unchanged with the accessing of wind power and shutting some gas-guzzling thermal power down. The corresponding software is programmed, and the diagrammatic method is developed to calculate and the CCOWF of IEEE-RTS79 test system. In the end, the application of CCOWF in aspect of calculating the ability of peak load regulation and the capacity of spinning reserve is short presented.","PeriodicalId":330758,"journal":{"name":"IEEE PES Innovative Smart Grid Technologies","volume":"3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-05-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127573592","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 : 2012-05-21DOI: 10.1109/ISGT-ASIA.2012.6303353
Shaobo Geng, Qingqing Ding, Bei Cai, Zhipeng Xing
Excessive mining of coal has given rise to the issues of safety and energy consumption in coal mine, and the crux lies in power network largely. In this paper, a set of monitoring system for power network in coal mine is present. Based on the demands of network operation, deep analysis is taken for the objectives of monitoring system: safety for workers underground, reliability of power network and A class equipment, power conservation. After that, system architecture and technical details are addressed and their pros and cons are discussed. This unified monitoring system rather than the conventional ones in which only a single monitoring object is concerned, integrates both equipment and workers into the monitoring schema, while the power network monitoring still be the core. Operated and tested in the laboratory, this monitoring system proved to be accurate, robust and easy to operate.
{"title":"Research on multi-objective monitoring system of power network in coal mine","authors":"Shaobo Geng, Qingqing Ding, Bei Cai, Zhipeng Xing","doi":"10.1109/ISGT-ASIA.2012.6303353","DOIUrl":"https://doi.org/10.1109/ISGT-ASIA.2012.6303353","url":null,"abstract":"Excessive mining of coal has given rise to the issues of safety and energy consumption in coal mine, and the crux lies in power network largely. In this paper, a set of monitoring system for power network in coal mine is present. Based on the demands of network operation, deep analysis is taken for the objectives of monitoring system: safety for workers underground, reliability of power network and A class equipment, power conservation. After that, system architecture and technical details are addressed and their pros and cons are discussed. This unified monitoring system rather than the conventional ones in which only a single monitoring object is concerned, integrates both equipment and workers into the monitoring schema, while the power network monitoring still be the core. Operated and tested in the laboratory, this monitoring system proved to be accurate, robust and easy to operate.","PeriodicalId":330758,"journal":{"name":"IEEE PES Innovative Smart Grid Technologies","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-05-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130644959","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}
In China, wind power industry has undergone great development in the last few years, while several cascading faults happened in 2011, reveal that terminal voltage of wind turbine generator (WTG) should be monitored and controlled. Furthermore WTGs and static var compensators/generators (SVC/SVGs) need to be coordinated to provide voltage service for the whole network. In this paper, a network model based coordinated automatic voltage control (AVC) strategy for wind farm (WF) is proposed: three control modes out of eight control zones are defined and implemented to accomplish three control objectives. A test AVC system is built to prove the proposed characteristics, and on-site applications in WFs are ongoing now.
{"title":"Network model based coordinated automatic voltage control strategy for wind farm","authors":"Yifeng Liu, Qinglai Guo, Hongbin Sun, Rui Chen, Bin Wang, Boming Zhang","doi":"10.1109/ISGT-ASIA.2012.6303110","DOIUrl":"https://doi.org/10.1109/ISGT-ASIA.2012.6303110","url":null,"abstract":"In China, wind power industry has undergone great development in the last few years, while several cascading faults happened in 2011, reveal that terminal voltage of wind turbine generator (WTG) should be monitored and controlled. Furthermore WTGs and static var compensators/generators (SVC/SVGs) need to be coordinated to provide voltage service for the whole network. In this paper, a network model based coordinated automatic voltage control (AVC) strategy for wind farm (WF) is proposed: three control modes out of eight control zones are defined and implemented to accomplish three control objectives. A test AVC system is built to prove the proposed characteristics, and on-site applications in WFs are ongoing now.","PeriodicalId":330758,"journal":{"name":"IEEE PES Innovative Smart Grid Technologies","volume":"35 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-05-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131175481","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 : 2012-05-21DOI: 10.1109/ISGT-ASIA.2012.6303208
Xiaoling Jin, Yibin Zhang, Xue Wang
Based on the condition of power grid, the choice of strong and smart grid in China is analyzed. The concept and objective of strong and smart grid are proposed. Smart Grid is a long-term and comprehensive systemic project, its coordinated development issues has been analyzed from four main sides, in order to ensure the efficient, orderly and coordinated development, and to realize the comprehensive benefit of smart grid. First is coordination of physical power grid and smart technology application. The influence of smart grid on physical power grid development is analyzed from power grid efficiency and load performance, etc. The appropriate principle of smart technology application is analyzed based on the topological structure and operation demand. Second is coordinated development among generation, transmission, distribution, consumption and dispatching system. The corresponding and coordinated development issues between grid and power plant, transmission network and distribution network, customer and power grid, dispatching with other segments, communication and information with other segments are investigated. Third is coordination of technology upgrading and management revolution. Concerning grid planning, construction, operation, maintenance, and electricity marketing, the optimization suggestion of management pattern are proposed, to get technology and management promote mutually. Last is coordination of smart grid and emerging industry.
{"title":"Strategy and coordinated development of strong and smart grid","authors":"Xiaoling Jin, Yibin Zhang, Xue Wang","doi":"10.1109/ISGT-ASIA.2012.6303208","DOIUrl":"https://doi.org/10.1109/ISGT-ASIA.2012.6303208","url":null,"abstract":"Based on the condition of power grid, the choice of strong and smart grid in China is analyzed. The concept and objective of strong and smart grid are proposed. Smart Grid is a long-term and comprehensive systemic project, its coordinated development issues has been analyzed from four main sides, in order to ensure the efficient, orderly and coordinated development, and to realize the comprehensive benefit of smart grid. First is coordination of physical power grid and smart technology application. The influence of smart grid on physical power grid development is analyzed from power grid efficiency and load performance, etc. The appropriate principle of smart technology application is analyzed based on the topological structure and operation demand. Second is coordinated development among generation, transmission, distribution, consumption and dispatching system. The corresponding and coordinated development issues between grid and power plant, transmission network and distribution network, customer and power grid, dispatching with other segments, communication and information with other segments are investigated. Third is coordination of technology upgrading and management revolution. Concerning grid planning, construction, operation, maintenance, and electricity marketing, the optimization suggestion of management pattern are proposed, to get technology and management promote mutually. Last is coordination of smart grid and emerging industry.","PeriodicalId":330758,"journal":{"name":"IEEE PES Innovative Smart Grid Technologies","volume":"69 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-05-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131557082","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}
For large-scale photovoltaic power station connected to medium-voltage grid, it is not proper to evaluate its power quality by traditional limitation in China. In this paper, it proposes testing technology and research in order to evaluate the power quality for large-scale photovoltaic power station according to latest photovoltaic standards. The tests will focus on flicker, harmonics, inter-harmonics and high frequency components. For voltage flicker under either continuous operation or switching operation, it gives one method which simulates the voltage fluctuation imposed by photovoltaic power station and calculates flicker emission on a fictitious grid, thereby avoiding the direct influence of the real voltage fluctuation of the grid at the measurement point on flicker. For current harmonics, interharmonics and high frequency components over continuous operation, it specifies the individual current components as sub grouped values in accordance with IEC 61000-4-7][1]. For the purpose of including the effect of voltage fluctuations during actual measurement, the choice of sub grouping method is applied.
{"title":"Testing technology and research on power quality for large-scale photovoltaic power station connected to the grid","authors":"Songming Zhu, Junjun Zhang, Xiaodi Qin, Chen-guang Niu","doi":"10.1109/ISGT-ASIA.2012.6303298","DOIUrl":"https://doi.org/10.1109/ISGT-ASIA.2012.6303298","url":null,"abstract":"For large-scale photovoltaic power station connected to medium-voltage grid, it is not proper to evaluate its power quality by traditional limitation in China. In this paper, it proposes testing technology and research in order to evaluate the power quality for large-scale photovoltaic power station according to latest photovoltaic standards. The tests will focus on flicker, harmonics, inter-harmonics and high frequency components. For voltage flicker under either continuous operation or switching operation, it gives one method which simulates the voltage fluctuation imposed by photovoltaic power station and calculates flicker emission on a fictitious grid, thereby avoiding the direct influence of the real voltage fluctuation of the grid at the measurement point on flicker. For current harmonics, interharmonics and high frequency components over continuous operation, it specifies the individual current components as sub grouped values in accordance with IEC 61000-4-7][1]. For the purpose of including the effect of voltage fluctuations during actual measurement, the choice of sub grouping method is applied.","PeriodicalId":330758,"journal":{"name":"IEEE PES Innovative Smart Grid Technologies","volume":"23 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-05-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133107044","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 : 2012-05-21DOI: 10.1109/ISGT-ASIA.2012.6303388
Hua Ouyang, Jialin Wang
A method of power system transient signal analysis based on improved Prony algorithm and neural network is used here to improve the accuracy of analysis of the transient signal with harmonic and inter-harmonic. The model of the Prony algorithm has the excellent characteristic of exactly describing transient signal and directly acquiring the frequency of signal. The frequency components of the signal were estimated assumably using Prony algorithm to confirm the amount of nerve cells and the beginning parameter of neural network firstly. Next, each frequency was treated as weight to be adjusted to estimate frequency values and amplitudes of the base wave, harmonics and inter-harmonics. Matlab simulation results demonstrated that the algorithm achieved high accuracy and rapid convergence.
{"title":"Power system transient signal analysis based on Prony algorithm and neural network","authors":"Hua Ouyang, Jialin Wang","doi":"10.1109/ISGT-ASIA.2012.6303388","DOIUrl":"https://doi.org/10.1109/ISGT-ASIA.2012.6303388","url":null,"abstract":"A method of power system transient signal analysis based on improved Prony algorithm and neural network is used here to improve the accuracy of analysis of the transient signal with harmonic and inter-harmonic. The model of the Prony algorithm has the excellent characteristic of exactly describing transient signal and directly acquiring the frequency of signal. The frequency components of the signal were estimated assumably using Prony algorithm to confirm the amount of nerve cells and the beginning parameter of neural network firstly. Next, each frequency was treated as weight to be adjusted to estimate frequency values and amplitudes of the base wave, harmonics and inter-harmonics. Matlab simulation results demonstrated that the algorithm achieved high accuracy and rapid convergence.","PeriodicalId":330758,"journal":{"name":"IEEE PES Innovative Smart Grid Technologies","volume":"70 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-05-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133178133","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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