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2008 Third International Conference on Electric Utility Deregulation and Restructuring and Power Technologies最新文献

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Policies for promotion of renewable energy sources for restructured power sector 改革后电力行业可再生能源推广政策
2008 Third International Conference on Electric Utility Deregulation and Restructuring and Power Technologies Pub Date : 2008-04-06 DOI: 10.1109/DRPT.2008.4625204
Randhir Singh, Y. Sood
{"title":"Policies for promotion of renewable energy sources for restructured power sector","authors":"Randhir Singh, Y. Sood","doi":"10.1109/DRPT.2008.4625204","DOIUrl":"https://doi.org/10.1109/DRPT.2008.4625204","url":null,"abstract":"Global electricity demand is expected to increase considerably during the next decade at the same time environmental pollution is also increasing with the development of conventional energy source. Every country intends to meet the additional demand of energy in part by renewable energy sources (RES). To meet the global energy demand various support schemes and policies for promotion of renewable energy sources in restructured power sector are discussed in this paper. These Support policies for renewable energies encourage the economic viability of electrical power generation from renewable energy sources. These policies reduce one or more key barriers in the development path of renewable energy. The paper takes a closer look at the regulatory policies for the promotion of electricity generation from renewable energy sources, which are currently at the center of global discussion.","PeriodicalId":240420,"journal":{"name":"2008 Third International Conference on Electric Utility Deregulation and Restructuring and Power Technologies","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-04-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128192273","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: 17
Energy analysis of power system low frequency oscillation of resonance mechanism 电力系统低频振荡的能量共振机理分析
2008 Third International Conference on Electric Utility Deregulation and Restructuring and Power Technologies Pub Date : 2008-04-06 DOI: 10.1109/DRPT.2008.4523581
Xin Jianbo, Han Zhiyong, Wu Guoping, H. Renmu, X. Yanhui
{"title":"Energy analysis of power system low frequency oscillation of resonance mechanism","authors":"Xin Jianbo, Han Zhiyong, Wu Guoping, H. Renmu, X. Yanhui","doi":"10.1109/DRPT.2008.4523581","DOIUrl":"https://doi.org/10.1109/DRPT.2008.4523581","url":null,"abstract":"Some power oscillations occurring in the actual power system, which are not induced by negative damping mechanism, has been explained well using this resonance mechanism of power system low frequency oscillation. The resonance mechanism in power system is explained from the energy point of view in this paper. The rotor energy functions of two-machine system and multi-machine system were deduced, and then the low frequency oscillation resonance mechanism of two-machine system was established. The energy characteristics of low frequency oscillation of resonance mechanism in two- machine system were analyzed through the simulations in Matlab. Finally, Southern Power Grid of Hebei province was taken as a multi-machine case. Its electromechanical oscillation modes were obtained using Small Signal Analysis Tool (SSAT), the relative rotor speed and generator power angle were obtained from the Power System Simulator/Engineering (PSS/E) simulation results and the energy of generator rotor was calculated using deduced energy function of multi-machine system. Its result causes the physical process of power oscillation to be clearer, and is helpful to well understand the power system low frequency oscillation of resonance mechanism.","PeriodicalId":240420,"journal":{"name":"2008 Third International Conference on Electric Utility Deregulation and Restructuring and Power Technologies","volume":"98 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-04-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128592134","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: 5
Modeling of transformer windings under VFTO using the lumped element equivalent circuit approach 用集总元件等效电路方法对VFTO下的变压器绕组进行建模
2008 Third International Conference on Electric Utility Deregulation and Restructuring and Power Technologies Pub Date : 2008-04-06 DOI: 10.1109/DRPT.2008.4523573
Guishu Liang, Meng Yao, Huaying Dong, Changhu Ji
{"title":"Modeling of transformer windings under VFTO using the lumped element equivalent circuit approach","authors":"Guishu Liang, Meng Yao, Huaying Dong, Changhu Ji","doi":"10.1109/DRPT.2008.4523573","DOIUrl":"https://doi.org/10.1109/DRPT.2008.4523573","url":null,"abstract":"Pade approximation is used to reduce the orders of the original system transfer functions in establishing the lumped circuit model of the transformer windings under very fast transient overvoltage (VFTO), but it can not guarantee the stability and accuracy of the reduced system. To address this issue, the transfer functions are firstly converted to state equations. Then one of Krylov-based subspace methods, Arnoldi algorithm, is presented to reduce the orders of the state equations in this paper. Finally the lumped element circuit model of transformer windings is established via the resulting order- reduced transfer functions by network synthesis method. The simulation results have proved that the accuracy becomes better and better with increasing the model orders, which Pade-based methods fail. It also demonstrates that the proposed approach is feasible and reliable for establishing lumped element equivalent circuit of transformer windings under VFTO.","PeriodicalId":240420,"journal":{"name":"2008 Third International Conference on Electric Utility Deregulation and Restructuring and Power Technologies","volume":"48 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-04-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128978236","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
A novel PIλDμ controller and its application in UPQC DC voltage control 一种新型pi - λ dμ控制器及其在UPQC直流电压控制中的应用
2008 Third International Conference on Electric Utility Deregulation and Restructuring and Power Technologies Pub Date : 2008-04-06 DOI: 10.1109/DRPT.2008.4523709
Liang Zuquan, Shu Hongchun
{"title":"A novel PIλDμ controller and its application in UPQC DC voltage control","authors":"Liang Zuquan, Shu Hongchun","doi":"10.1109/DRPT.2008.4523709","DOIUrl":"https://doi.org/10.1109/DRPT.2008.4523709","url":null,"abstract":"UPQC is a powerful application to settle the Power Quality problem. The DC voltage being the given value is the prime of its correct and valid working. The principle and the advantage of Pi<sup>lambda</sup>D<sup>mu</sup> controller are presented in this paper. By using the software MATLAB and EMTDC/PSCAD, the Pi<sup>lambda</sup>D<sup>mu</sup> controller and the UPQC are simulated separately. The Pi<sup>lambda</sup>D<sup>mu</sup> control of the DC voltage is the utilized through the interface of the MATLAB and EMTDC/PSCAD software. Simulation results show the validity and correctness of the Pi<sup>lambda</sup>D<sup>mu</sup> controller and it is advantaged than the traditional PI control. The Pi<sup>lambda</sup>D<sup>mu</sup> controller would be widely used in Power System and other systems.","PeriodicalId":240420,"journal":{"name":"2008 Third International Conference on Electric Utility Deregulation and Restructuring and Power Technologies","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-04-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130702740","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: 8
Assessing adequate voltage stability analysis tools for networks with high wind power penetration 评估具有高风力发电渗透率的电网的适当电压稳定性分析工具
2008 Third International Conference on Electric Utility Deregulation and Restructuring and Power Technologies Pub Date : 2008-04-06 DOI: 10.1109/DRPT.2008.4523830
F. Milano
{"title":"Assessing adequate voltage stability analysis tools for networks with high wind power penetration","authors":"F. Milano","doi":"10.1109/DRPT.2008.4523830","DOIUrl":"https://doi.org/10.1109/DRPT.2008.4523830","url":null,"abstract":"This paper presents a comparison of static and dynamic continuation power flow techniques, time domain simulations and quasi-static time domain simulations for voltage stability analysis of networks with high wind power penetration. Three wind turbine models are considered, namely, constant-speed induction generator; doubly-fed induction generator; and direct- drive synchronous generator. Several simulations are solved in order to assess the behavior of wind turbine models and the reliability of voltage stability techniques. The case study is based on a 40-bus network that models an existing distribution system with one high voltage feeder.","PeriodicalId":240420,"journal":{"name":"2008 Third International Conference on Electric Utility Deregulation and Restructuring and Power Technologies","volume":"3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-04-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130469841","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: 29
Development and application of reliability analysis system for medium and high voltage distribution networks 中高压配电网可靠性分析系统的开发与应用
2008 Third International Conference on Electric Utility Deregulation and Restructuring and Power Technologies Pub Date : 2008-04-06 DOI: 10.1109/DRPT.2008.4523541
Hongyun Zhang, Pengxiang Bi, X. Zhong, Qing Jin
{"title":"Development and application of reliability analysis system for medium and high voltage distribution networks","authors":"Hongyun Zhang, Pengxiang Bi, X. Zhong, Qing Jin","doi":"10.1109/DRPT.2008.4523541","DOIUrl":"https://doi.org/10.1109/DRPT.2008.4523541","url":null,"abstract":"In order to identify the bottleneck weaknesses of a distribution network so as to improve service reliability of the network by effective upgrading, we developed the power flow calculation based reliability analysis software for high-voltage distribution networks and the fault pervasion algorithm based reliability analysis system for medium-voltage distribution networks. Taking into account multiple factors, including line failure rate, repair time, isolation operation time and switching operation time, the system software can calculate the reliability indices and static security indices of node, feeder and system, and analyze the effect of reliability parameter variation, the influence of component reliability, the sensitivity to component reliability, and the bottleneck weaknesses of distribution networks. Actual application of the systems in calculation and analysis of power flow and reliability of Xi'an and other three regional medium and high voltage distribution networks manifested the bottleneck weaknesses of the networks, and found out various existing problems in reliability management. After effective measures are taken, good social and economic benefits were achieved.","PeriodicalId":240420,"journal":{"name":"2008 Third International Conference on Electric Utility Deregulation and Restructuring and Power Technologies","volume":"23 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-04-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131708321","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
Nonlinear PID controller of H-bridge cascade SSSC top level control h桥串级SSSC顶层控制的非线性PID控制器
2008 Third International Conference on Electric Utility Deregulation and Restructuring and Power Technologies Pub Date : 2008-04-06 DOI: 10.1109/DRPT.2008.4523703
Zhao Yang, Xiao Xiangning, Xudong Jia
{"title":"Nonlinear PID controller of H-bridge cascade SSSC top level control","authors":"Zhao Yang, Xiao Xiangning, Xudong Jia","doi":"10.1109/DRPT.2008.4523703","DOIUrl":"https://doi.org/10.1109/DRPT.2008.4523703","url":null,"abstract":"As a series FACTS device based on Voltage Source Converter (VSC), Static Series Synchronous Compensators (SSSC) can optimize power flow and improve power system stability by controlling the line impedance rapidly. According to the three levels control structure of SSSC proposed in this paper, when SSSC middle level control operates at constant impedance mode, it has characteristic of controllable impedance as viewed from the top level. In this paper, the output of SSSC is equivalent to controllable impedance and then affine nonlinear equation of the single machine infinite bus (SMIB) power system including a SSSC can be obtained without the compound coordinate transformation approach which is proposed by other documentation and the feedback exact linearization method can be used directly to obtain the SSSC top level nonlinear controller. For avoiding solving the partial differential equation, the direct method is used to realize the exact linearization simply and conveniently. For overcome the shortcoming of low robustness of exact feedback linearization approach due to uncertainty of parameters and model of controlled system, the nonlinear PID control is used to design the SSSC top level controller. Finally the paper applies Real Time Digital Simulator (RTDS) to validate the feasibility of the proposed modeling and control approach in damping out power system oscillations.","PeriodicalId":240420,"journal":{"name":"2008 Third International Conference on Electric Utility Deregulation and Restructuring and Power Technologies","volume":"49 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-04-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128814263","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: 8
Power line communication de-noising study based on chaotic spread spectrum and wavelet 基于混沌扩频和小波的电力线通信降噪研究
2008 Third International Conference on Electric Utility Deregulation and Restructuring and Power Technologies Pub Date : 2008-04-06 DOI: 10.1109/DRPT.2008.4523727
Ju Wang, Shao-sheng Fan
{"title":"Power line communication de-noising study based on chaotic spread spectrum and wavelet","authors":"Ju Wang, Shao-sheng Fan","doi":"10.1109/DRPT.2008.4523727","DOIUrl":"https://doi.org/10.1109/DRPT.2008.4523727","url":null,"abstract":"Communication using power line as a medium of signal transmission offers a convenient and inexpensive solution for multimedia signal transmission and control applications. This paper aims to present a de-noising scheme which is a combination between chaotic spread spectrum sequence system and the wavelet transform in power line communications (PLC). The proposed communication scheme is based on two key ideas. The first concept consists of the use of the spread-spectrum based on chaotic sequence in order to minimize interference caused by the power line and to secure the transmission information. The second idea consists of the use of discrete wavelet transform to reduce the noise from a chaotic sequence. Signal-to-noise (SNR) and root mean squared error (RMSE) are made. Analyses of bit error rate (BER) illustrate the superior communication performance of the proposed PLC de-noising scheme based on chaotic spread spectrum and wavelet.","PeriodicalId":240420,"journal":{"name":"2008 Third International Conference on Electric Utility Deregulation and Restructuring and Power Technologies","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-04-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123183785","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
A novel static voltage stability index based on equilibrium solution region of branch power flow 一种新的基于支路潮流平衡解域的静态电压稳定指标
2008 Third International Conference on Electric Utility Deregulation and Restructuring and Power Technologies Pub Date : 2008-04-06 DOI: 10.1109/DRPT.2008.4523517
Liu Baozhu, Liu Bolong
{"title":"A novel static voltage stability index based on equilibrium solution region of branch power flow","authors":"Liu Baozhu, Liu Bolong","doi":"10.1109/DRPT.2008.4523517","DOIUrl":"https://doi.org/10.1109/DRPT.2008.4523517","url":null,"abstract":"This paper proposes a novel online real-time assessment method based on equilibrium solution region of branch power flow. This method demonstrates the use of line stability index in order to determine the voltage stability limits in a power system. Line voltage stability indices presented in the literatures are reviewed and discussed. The shortcomings of these methods are pointed out in the face of special operation mode. A new index is deduced based on the feasible solution region of branch equations. The equations of active power and reactive power via node voltage of the branch are listed to form the equilibrium solution region. The similarities and differences between the flow direction of active power and reactive power are analyzed to determine the incidence of them to equilibrium solution. The examples show that the new index has the advantage of low computation burden, and can supply an effective analysis tool for real time on-line assessment of voltage stability in power systems.","PeriodicalId":240420,"journal":{"name":"2008 Third International Conference on Electric Utility Deregulation and Restructuring and Power Technologies","volume":"8 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-04-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126352834","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: 13
Selection of HVDC models for stability studies 稳定性研究中高压直流模型的选择
2008 Third International Conference on Electric Utility Deregulation and Restructuring and Power Technologies Pub Date : 2008-04-06 DOI: 10.1109/DRPT.2008.4523723
X. Mao, Yao Zhang, Feng Ye, Xiao-long Chen
{"title":"Selection of HVDC models for stability studies","authors":"X. Mao, Yao Zhang, Feng Ye, Xiao-long Chen","doi":"10.1109/DRPT.2008.4523723","DOIUrl":"https://doi.org/10.1109/DRPT.2008.4523723","url":null,"abstract":"Representation of high voltage direct current (HVDC) transmission links in power system stability studies requires special attention. A detailed model, while very precise, requires considerable time for modeling and calculation. Simplified models, on the other hand, do not always provide sufficiently accurate results. In this paper, simplified and detailed HVDC simulation models are described and compared. The dc system modeled is the plusmn500-kV, 3000-MW 12-pulse bipolar link between Gaopo rectifier station in Guizhou province and Zhaoqing inverter station in Guangdong province, China. NETOMAC, a powerful and flexible software package, is employed for modeling and calculations. Simulation cases based on the China Southern Power Grid data are presented and analyzed. Appropriate model selection is discussed.","PeriodicalId":240420,"journal":{"name":"2008 Third International Conference on Electric Utility Deregulation and Restructuring and Power Technologies","volume":"28 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-04-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126357373","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
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