2010 International Conference on Power System Technology最新文献_第8页

An optimal energy storage capacity calculation method for 100MW wind farm 100MW风电场最优储能容量计算方法

2010 International Conference on Power System Technology Pub Date : 2010-12-13 DOI: 10.1109/POWERCON.2010.5666426

Liang Liang, Jianlin Li, Hui Dong

引用次数: 21

Puffer characteristic calculation of a circuit breaker using fluorocarbon gas mixtures 使用氟碳混合气体的断路器的羽化特性计算

2010 International Conference on Power System Technology Pub Date : 2010-12-13 DOI: 10.1109/POWERCON.2010.5666527

Kang Li, Weijun Xing, Guoqiang Zhang, Wenhao Niu, Xin Wang, Yingying Wang

{"title":"Puffer characteristic calculation of a circuit breaker using fluorocarbon gas mixtures","authors":"Kang Li, Weijun Xing, Guoqiang Zhang, Wenhao Niu, Xin Wang, Yingying Wang","doi":"10.1109/POWERCON.2010.5666527","DOIUrl":"https://doi.org/10.1109/POWERCON.2010.5666527","url":null,"abstract":"Because of its high dielectric strength, good partial discharge capability, low global warming potential (GWP), none ozone depletion potential (ODP) and nontoxicity, fluorocarbon gas is possible substitute for SF6, and can be used hopefully in electrical equipment, such as circuit breaker. In this paper, we calculate the pressure characteristic of circuit breaker using gas mixture containing fluorocarbon gas as arc quenching gas based-on the first law of thermodynamics and the law of hydrokinetics. The pressure characteristic curves of the gas chamber and the gas mass flow pass the nozzle are obtained through computation. In addition, the influences of mixtures ratio and nozzle throat diameter to the pressure and gas mass flow rate are achieved. It shows that the bigger ratio of fluorocarbon is corresponding to the bigger chamber pressure and relative bigger mass flow as to the same structural factor with no energy input; while considering the arc energy bigger ratio corresponding to smaller chamber pressure. And the nozzle throat diameter has a large impact on the pressure and gas mass flow rate. Besides, we also compared the gas pressure and gas mass flow rate of mixture gas with that of SF6 gas. These results provide a helpful reference for the design of the new type circuit breaker.","PeriodicalId":169553,"journal":{"name":"2010 International Conference on Power System Technology","volume":"38 6","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-12-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131746499","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

Fuzzy comprehensive evaluation for insulation diagnosis of high voltage cable 高压电缆绝缘诊断的模糊综合评判

2010 International Conference on Power System Technology Pub Date : 2010-12-13 DOI: 10.1109/POWERCON.2010.5666093

Jiantao Sun, Guangfan Li, K. Gao, Bo Li, Jinzhong Li, L. Lan

引用次数: 3

A study on steady characters of inverter interfaced distributed generation in three phase symmetrical system 三相对称系统逆变器接口分布式电源稳态特性研究

2010 International Conference on Power System Technology Pub Date : 2010-12-13 DOI: 10.1109/POWERCON.2010.5666669

Q. Jin, Yong-Li Li

{"title":"A study on steady characters of inverter interfaced distributed generation in three phase symmetrical system","authors":"Q. Jin, Yong-Li Li","doi":"10.1109/POWERCON.2010.5666669","DOIUrl":"https://doi.org/10.1109/POWERCON.2010.5666669","url":null,"abstract":"Recently inverters are all-pervading used as the connective instrument of distributed generations and distributed power system. When inverter interfaced distributed generations are connected to the distribution system, it may bring some new problems on load flow and fault characteristic and protection. The analysis on steady characters of PQ control mode and VF control mode inverter interfaced distributed generation is done when the system is three phase symmetrical. Generally speaking there are limits on power and current in control system for the security of distributed generations and power electronic devices in inverter, so the analysis is more complex. The mathematical analysis on three phase symmetrical system is done and restriction equations are described whether three phase symmetrical fault occurs or not. For the solution of the equation groups expresses the steady state of the system, so the solution of the equation groups is one and only. Then the restriction equation groups are solved. The solution in different areas shows the reason of steady non-linear character of inverter interfaced distributed generations and the simulation shows the conclusion correct. The steady characteristic curves of PQ control mode and VF control mode inverter interfaced distributed generation about voltage and current and power are got from the function of voltage and current and power at the same time. PQ control mode and VF control mode inverter interfaced distributed generation behave similarly but not identically when three phase symmetrical fault occurs in three phase symmetrical system. The disadvantageous influence on protection is analysed by the way.","PeriodicalId":169553,"journal":{"name":"2010 International Conference on Power System Technology","volume":"36 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-12-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127587988","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: 6

Impact of Plug-In Hybrid Electric Vehicles on distribution systems 插电式混合动力电动汽车对配电系统的影响

2010 International Conference on Power System Technology Pub Date : 2010-12-13 DOI: 10.1109/POWERCON.2010.5666121

Sheng Lin, Zhengyou He, T. Zang, Q. Qian

引用次数: 37

Dynamic responses analysis and disaster prevention of transmission line under strong wind 强风作用下输电线路动力响应分析与防灾

2010 International Conference on Power System Technology Pub Date : 2010-12-13 DOI: 10.1109/POWERCON.2010.5666417

Jing-bo Yang, Fengli Yang, Qinghua Li, D. Fu, Zifu Zhang

{"title":"Dynamic responses analysis and disaster prevention of transmission line under strong wind","authors":"Jing-bo Yang, Fengli Yang, Qinghua Li, D. Fu, Zifu Zhang","doi":"10.1109/POWERCON.2010.5666417","DOIUrl":"https://doi.org/10.1109/POWERCON.2010.5666417","url":null,"abstract":"Dynamic analysis of a typical transmission line section under strong wind was carried out. Firstly, according to the design conditions of the typical transmission line section, a three dimensional finite element analysis model of cup tower-stay frame tower-conductor-ground wire-insulator system was established in ANSYS. The initial tension force of the conductors was applied by the cooling method. Before the wind-induced vibration analysis, the form-finding analysis of conductors under self weight was carried out. Secondly, time history of the impulsive wind velocity was generated by spectral representation method. Time history of the impulsive wind velocity can be obtained by Fourier transformation in MATLAB program. The average wind pressure is applied to the tower line system by static method, and the impulsive wind pressure is applied by transient dynamic method. Thirdly, for the wind load case of design velocity, the wind-induced responses of the typical transmission line section were analyzed. Effect of the structural damping was considered by Rayleigh damping coefficients. Nonlinear transient analysis was employed for the wind-induced dynamic analysis of transmission line system. Under different wind velocities and directions, some wind-induced responses were obtained, which includes the tension forces of the conductors and the ground wires, axial forces of the towers, and the tension forces of the stray frame tower. Lastly, based on the analyzed results, the prewarning wind velocity for the typical transmission line section was determined. Some strengthen suggestions for the tower design in the strong wind zone was presented.","PeriodicalId":169553,"journal":{"name":"2010 International Conference on Power System Technology","volume":"1970 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-12-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128037704","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

Reliability analysis of distribution networks 配电网可靠性分析

2010 International Conference on Power System Technology Pub Date : 2010-12-13 DOI: 10.1109/POWERCON.2010.5666066

O. Shavuka, K. Awodele, S. Chowdhury, S. Chowdhury

引用次数: 18

Studies on series compensation of UHV transmission line 特高压输电线路串联补偿的研究

2010 International Conference on Power System Technology Pub Date : 2010-12-13 DOI: 10.1109/POWERCON.2010.5666576

Qisheng Liu, Jiawen Yu, He Chen, Y. Qin

引用次数: 6

A smart power system cascading failure accident prediction model based on probability analysis 基于概率分析的智能电力系统级联故障事故预测模型

2010 International Conference on Power System Technology Pub Date : 2010-12-13 DOI: 10.1109/POWERCON.2010.5666720

Yun Wang, Bo Wang, Ming Liang

引用次数: 2

Review on frequency control of power systems with wind power penetration 风电侵彻电力系统频率控制研究进展

2010 International Conference on Power System Technology Pub Date : 2010-12-13 DOI: 10.1109/POWERCON.2010.5666151

Yuanzhan Sun, Zhao-sui Zhang, Guo-jie Li, Jin Lin

引用次数: 179