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An improved quasi-Z-source inverter for grid-connected photovoltaic system 并网光伏系统的改进准z源逆变器
2016 China International Conference on Electricity Distribution (CICED) Pub Date : 2016-09-26 DOI: 10.1109/CICED.2016.7575993
Sun Bo, L. Wen, Lu Hailing, Xu Chengji, Zhao Cheng-bin
{"title":"An improved quasi-Z-source inverter for grid-connected photovoltaic system","authors":"Sun Bo, L. Wen, Lu Hailing, Xu Chengji, Zhao Cheng-bin","doi":"10.1109/CICED.2016.7575993","DOIUrl":"https://doi.org/10.1109/CICED.2016.7575993","url":null,"abstract":"An improved quasi-Z-source inverter for grid-connected photovoltaic system is proposed in this study. Two tapped-inductors are substituted for the inductors of quasi-Z-source inverter (qZSI) respectively. Compared with the classic topology, the proposed topology can not only arise the boost ability but also make the voltage stress be decreased. The operation principle and voltage stress of the proposed topology is analyzed theoretically and compared with that of qZSI and switched-inductor quasi-Z-source inverter (SL-qZSI). The results of simulations and experiments are shown to validate the feasibility of the proposed topology.","PeriodicalId":231527,"journal":{"name":"2016 China International Conference on Electricity Distribution (CICED)","volume":"17 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-09-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132305825","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}
引用次数: 2
Simulation and stability analysis of spring operating mechanism with clearance for high voltage circuit breakers 高压断路器带间隙弹簧操动机构仿真及稳定性分析
2016 China International Conference on Electricity Distribution (CICED) Pub Date : 2016-09-26 DOI: 10.1109/CICED.2016.7576040
Meng Fangang, Wu Shijing, H. Jicai, Xiao Yang, J. Junfeng, Li Qiaoquan, Shi Cunling
{"title":"Simulation and stability analysis of spring operating mechanism with clearance for high voltage circuit breakers","authors":"Meng Fangang, Wu Shijing, H. Jicai, Xiao Yang, J. Junfeng, Li Qiaoquan, Shi Cunling","doi":"10.1109/CICED.2016.7576040","DOIUrl":"https://doi.org/10.1109/CICED.2016.7576040","url":null,"abstract":"Spring Operating Mechanism (SOM) is a dynamic mechanical system to open and close high voltage circuit breaker in electric power controlling system. The dynamic characteristics of SOM are short operating time and high instantaneous speed in the process of working, which present strong nonlinear features. In order to save time and money for a new design and analysis of SOM, the dynamic model with clearance considering the contact and collision under ADAMS program is established. The result indicated that the existence of the clearance joints causes hysteresis and impact effects on velocity and acceleration of the mechanism compared to the mechanism without clearance.","PeriodicalId":231527,"journal":{"name":"2016 China International Conference on Electricity Distribution (CICED)","volume":"108 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-09-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116377913","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}
引用次数: 4
Study on quality fuzzy synthetic evaluation method for power transformer based on life cycle theory 基于生命周期理论的电力变压器质量模糊综合评价方法研究
2016 China International Conference on Electricity Distribution (CICED) Pub Date : 2016-09-26 DOI: 10.1109/CICED.2016.7575905
J. M. Chen, T. Bi, M. Sun
{"title":"Study on quality fuzzy synthetic evaluation method for power transformer based on life cycle theory","authors":"J. M. Chen, T. Bi, M. Sun","doi":"10.1109/CICED.2016.7575905","DOIUrl":"https://doi.org/10.1109/CICED.2016.7575905","url":null,"abstract":"Power transformer is one of the key equipment in the power grid. Its quality is directly related to the continuous and stable operation of the power system. It is difficult to evaluate the power transformer quality, because of the complex technology, longtime manufacturing cycle, and high fuzzy information. The quality fuzzy synthetic evaluation method for power transformer based on life cycle theory is proposed, which can solve the above problem. The factor set is established, which contains multi-source information and quality defects information. The multi-source information can be classified to manufacturing, manufacturing, installation, commission, and operation stage. The evaluation set is established with four ranks. The membership degree set is determined based on the fuzzy statistical method. The weighting set is calculated based on the Delphi method. At last, the method proposed is verified by the example.","PeriodicalId":231527,"journal":{"name":"2016 China International Conference on Electricity Distribution (CICED)","volume":"48 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-09-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128086531","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}
引用次数: 1
Influence factors analysis about terminal voltage of wind turbine when single phase grounding fault occurs 风电机组单相接地故障时端子电压的影响因素分析
2016 China International Conference on Electricity Distribution (CICED) Pub Date : 2016-09-26 DOI: 10.1109/CICED.2016.7576072
Yuting Wang, Chen Qi, Jiawei Yuan, Zhang Hao
{"title":"Influence factors analysis about terminal voltage of wind turbine when single phase grounding fault occurs","authors":"Yuting Wang, Chen Qi, Jiawei Yuan, Zhang Hao","doi":"10.1109/CICED.2016.7576072","DOIUrl":"https://doi.org/10.1109/CICED.2016.7576072","url":null,"abstract":"The stator of the doubly fed induction generator is directly connected to the power grid, which is very sensitive to the disturbance of power grid. Wind turbine will take off the network when grid voltage drops because of single-phase fault. It will seriously impact on safe operation of power grid. This paper introduces the requirement of low voltage ride through performance of wind turbine and the effect of power grid fault on the operation of wind turbine generator. Based on the fault component analysis method, the influence factors of the single phase voltage sag of the system are analyzed. The simulation model is built on the PSCAD/EMTDC and the analysis results are verified by simulation.","PeriodicalId":231527,"journal":{"name":"2016 China International Conference on Electricity Distribution (CICED)","volume":"56 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-09-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130524955","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}
引用次数: 0
Analysis of incorrect operation of 220 kV line protection power converse and its improving measures 220kv线路保护逆变误操作分析及改进措施
2016 China International Conference on Electricity Distribution (CICED) Pub Date : 2016-09-26 DOI: 10.1109/CICED.2016.7576018
Luo Bin-bin, Xiao Qiong, Wang Chang-xiang
{"title":"Analysis of incorrect operation of 220 kV line protection power converse and its improving measures","authors":"Luo Bin-bin, Xiao Qiong, Wang Chang-xiang","doi":"10.1109/CICED.2016.7576018","DOIUrl":"https://doi.org/10.1109/CICED.2016.7576018","url":null,"abstract":"This paper analysis a mal-operation event of power converse protection. By deeply analyzing the link between time and mal-operation of power converse protection from theoretical analysis and protective logic, it sums up behaviors of 220 kV line protection tripping behavior under power converse situation, concludes that the reason for mal-operation is power converse protective logic can not adapt to the fault fast removal of the operating conditions. This article presents three measures to these problems. The application results prove the effectiveness of these methods.","PeriodicalId":231527,"journal":{"name":"2016 China International Conference on Electricity Distribution (CICED)","volume":"9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-09-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123961547","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}
引用次数: 0
Analysis of the measuring points selection of power transformer winding deformation though vibration test 电力变压器绕组振动变形测点选择分析
2016 China International Conference on Electricity Distribution (CICED) Pub Date : 2016-09-26 DOI: 10.1109/CICED.2016.7576349
Xue-bin Li, Xu Huang, Zhiqiang Zhou, Yi-song Zhao, Yanwen Chen, Xuebin Song
{"title":"Analysis of the measuring points selection of power transformer winding deformation though vibration test","authors":"Xue-bin Li, Xu Huang, Zhiqiang Zhou, Yi-song Zhao, Yanwen Chen, Xuebin Song","doi":"10.1109/CICED.2016.7576349","DOIUrl":"https://doi.org/10.1109/CICED.2016.7576349","url":null,"abstract":"In order to solve the uncertainty problem of the vibration measuring point selection of the winding deformation by vibration method. The test platform is set based on the vibration mechanism of transformer. Through a S11-M-500kVA/35kV test transformer, a series of tests on the normal and fabricated fault winding are made to obtain research dates. The difference between the data was quantified by the Euclidean distance and the 100HZ amplitude variation rate. Calculated the 1/6, 1/3 and 1/2 measure points of Euclidean distance are 0.013347, 0.003901 and 0.002584; and amplitude change rates in 100Hz are 68%, 23% and 13%. The analysis results of different winding test data show that the two characteristic quantities used in this paper can be used for the detection of winding deformation., and 1/6 point is better for Winding deformation detection by vibration analysis.","PeriodicalId":231527,"journal":{"name":"2016 China International Conference on Electricity Distribution (CICED)","volume":"19 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-09-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115267796","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}
引用次数: 2
Strategies and properties of local control for distributed generation 分布式发电的局部控制策略及特性
2016 China International Conference on Electricity Distribution (CICED) Pub Date : 2016-09-26 DOI: 10.1109/CICED.2016.7576215
Wei Haokun, L. Jian, Zhang Shiqiang, Lin Yifan
{"title":"Strategies and properties of local control for distributed generation","authors":"Wei Haokun, L. Jian, Zhang Shiqiang, Lin Yifan","doi":"10.1109/CICED.2016.7576215","DOIUrl":"https://doi.org/10.1109/CICED.2016.7576215","url":null,"abstract":"In this paper, a local voltage control algorithm of Distributed Generation (DG) as on-grid inverter was proposed, and its strategies and properties were discussed. It is argued that the maximum voltage appears at the accessing point and thus it is feasible to apply local control of DG. Multi-round local control strategy based on regular time interval is also proposed. Within each round, the voltage is adjusted via controlling the active power and reactive power of DG with respective to the range of voltage limits. Furthermore, a series of damping factor is introduced to increase the stability of the control system. To verify the proposed algorithm, numerical tests are conducted on a case of IEEE 33-Bus DN. The results suggest that a reasonable damping factor will increase the performance of the local control system.","PeriodicalId":231527,"journal":{"name":"2016 China International Conference on Electricity Distribution (CICED)","volume":"9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-09-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116926253","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}
引用次数: 2
A grey correlation and topsis based evaluation method on main electric connection of new generation smart substation 新一代智能变电站主接线的灰色关联和topsis评价方法
2016 China International Conference on Electricity Distribution (CICED) Pub Date : 2016-09-26 DOI: 10.1109/CICED.2016.7576135
Xu Yan, Liu Yuankun, G. SongLin
{"title":"A grey correlation and topsis based evaluation method on main electric connection of new generation smart substation","authors":"Xu Yan, Liu Yuankun, G. SongLin","doi":"10.1109/CICED.2016.7576135","DOIUrl":"https://doi.org/10.1109/CICED.2016.7576135","url":null,"abstract":"With the construction of new generation smart substation, traditional main electric connection of substation also need to be impoved, evaluation work should change accordingly. To evaluate the main electric connection of new generation smart substation, a method based on a Grey Correlation and Topsis is proposed. By overcoming shortcomings that traditional Topsis method cannot reflect the situational changes of data sequence, This method systematically combine the Topsis and grey correlation constructing a new kind of relative degree index as a standard of evaluating. The reliability and the advancement of the method is verified in the relevant case.","PeriodicalId":231527,"journal":{"name":"2016 China International Conference on Electricity Distribution (CICED)","volume":"29 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-09-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129634602","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}
引用次数: 0
Reliability analysis method for microgrid with intermittent distributed generations 间歇性分布式发电微电网可靠性分析方法
2016 China International Conference on Electricity Distribution (CICED) Pub Date : 2016-09-26 DOI: 10.1109/CICED.2016.7576140
Sun Guocheng, Zhao Jingtao, Z. Xiaoyan, Liu Cheng, Zhang Yusen, Kong Xiangyu, Lv Xinpeng
{"title":"Reliability analysis method for microgrid with intermittent distributed generations","authors":"Sun Guocheng, Zhao Jingtao, Z. Xiaoyan, Liu Cheng, Zhang Yusen, Kong Xiangyu, Lv Xinpeng","doi":"10.1109/CICED.2016.7576140","DOIUrl":"https://doi.org/10.1109/CICED.2016.7576140","url":null,"abstract":"The paper concerns on the reliability analysis method for microgrid with the intermittent distributed generations (DGs) and their power supply failure. Some types of DGs, such as photovoltaic and wind turbine, have the characteristic of intermittent and uncontrollable, which leads to unstable power output. It is worth to analyze and quantify the microgrid influence of DGs on the power supply reliability. In the paper, taking wind turbine as example, a multi-states power output model for intermittent DGs was provided with Markov chain. And then, a microgrid reliability analysis method, considering the influences of DGs intermittent and power supply failure, was proposed. The probability distribution of loads and power supplies are used, and a quantitative reliability indicator was given in the method, which could well reflect the microgrid reliability on various random factors. At last, an actual microgrid in Nanjing City was used to verify the feasibility and effectiveness of the proposed method.","PeriodicalId":231527,"journal":{"name":"2016 China International Conference on Electricity Distribution (CICED)","volume":"233 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-09-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121412021","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}
引用次数: 11
Grid-connected PV system modeling and control based on the variable step size of MPPT algorithm 基于变步长MPPT算法的并网光伏系统建模与控制
2016 China International Conference on Electricity Distribution (CICED) Pub Date : 2016-09-26 DOI: 10.1109/CICED.2016.7576382
L. Cuiping, Zhu Junwu, L. Junhui, Yao Zhizhong
{"title":"Grid-connected PV system modeling and control based on the variable step size of MPPT algorithm","authors":"L. Cuiping, Zhu Junwu, L. Junhui, Yao Zhizhong","doi":"10.1109/CICED.2016.7576382","DOIUrl":"https://doi.org/10.1109/CICED.2016.7576382","url":null,"abstract":"Based on two kinds of maximum power point tracking (MPPT), this paper proposed an improved variable step size incremental conductance algorithm which combined with constant voltage tracking. The operating point of PV array is located near the maximum power point (MPP) rapidly by using the fixed voltage method, and the PV array is controlled to run at the MPP quickly and accurately adopting different disturbance step. Grid-connected inverter adopts the double closed-loop control strategy of based on feed-forward decoupling to realize the decoupling control of active and reactive power. In PSCAD/EMTDC, the model of grid-connected photovoltaic system (GCPS) has been implemented and verified the effectiveness of the improved MPPT algorithm.","PeriodicalId":231527,"journal":{"name":"2016 China International Conference on Electricity Distribution (CICED)","volume":"21 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-09-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131634151","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}
引用次数: 3
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