2008 Third International Conference on Electric Utility Deregulation and Restructuring and Power Technologies最新文献_第7页

Research of symmetrical voltages and phase of three-phase inverter with dual-loop control 双环控制三相逆变器电压相位对称的研究

2008 Third International Conference on Electric Utility Deregulation and Restructuring and Power Technologies Pub Date : 2008-04-06 DOI: 10.1109/DRPT.2008.4523688

Lai Xiang-dong, Qu Yan-gang, Zou Yun-ping, Chen Yao-jun, Zhong Yan-ping

{"title":"Research of symmetrical voltages and phase of three-phase inverter with dual-loop control","authors":"Lai Xiang-dong, Qu Yan-gang, Zou Yun-ping, Chen Yao-jun, Zhong Yan-ping","doi":"10.1109/DRPT.2008.4523688","DOIUrl":"https://doi.org/10.1109/DRPT.2008.4523688","url":null,"abstract":"In terms of the conventional inverter doesn't match all unbalanced loads, a topology and strategy of nature- decoupling in circuit and magnetic circuit is proposed for aeronautic and military equipment field. Each phase voltage is controlled independently by PI controller and double-loop controller with voltage and current instantaneous feedback, and phase angle by closed-loop control with PLL , which make the output voltage and phase angle track the references sine wave. Pulse width and phase angle of reference sine wave are modulated by voltage-loop and phase-loop, which ensures phase and voltage of the inverter to symmetry. At first, output unsymmetrical mechanism of a traditional inverter is analyzed in this paper; Second, its main circuit topology, construction of voltage current feedback circuits, its control principle and implementation method are discussed; then, its mathematic models are set up and analyzed; At last, simulation and experiment results of 30 kW three-phase inverter is obtained that proves this circuit design to be feasible.","PeriodicalId":240420,"journal":{"name":"2008 Third International Conference on Electric Utility Deregulation and Restructuring and Power Technologies","volume":"22 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":"125195062","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

Effect of participants’ risk attitudes on one-way option electricity transaction based on utility theory 基于效用理论的参与者风险态度对单向期权电力交易的影响

2008 Third International Conference on Electric Utility Deregulation and Restructuring and Power Technologies Pub Date : 2008-04-06 DOI: 10.1109/DRPT.2008.4523453

L. Xiaojun, H. Ngan, C. Yu, C. Chung, K. Wong, Tan Zhongfu

引用次数: 0

Control voltage of DC energy storage unit in universal power quality compensator based on ZVT-PWM 基于ZVT-PWM的通用电能质量补偿器直流储能单元电压控制

2008 Third International Conference on Electric Utility Deregulation and Restructuring and Power Technologies Pub Date : 2008-04-06 DOI: 10.1109/DRPT.2008.4523739

Zhu En-guo, Wu Guo-liang, Yang Gong-xun

引用次数: 0

A preprocessing method for effective PMU placement studies 一种有效PMU放置研究的预处理方法

2008 Third International Conference on Electric Utility Deregulation and Restructuring and Power Technologies Pub Date : 2008-04-06 DOI: 10.1109/DRPT.2008.4523897

Ming Zhou, V. Centeno, A. Phadke, Y. Hu, D. Novosel, H. Volskis

{"title":"A preprocessing method for effective PMU placement studies","authors":"Ming Zhou, V. Centeno, A. Phadke, Y. Hu, D. Novosel, H. Volskis","doi":"10.1109/DRPT.2008.4523897","DOIUrl":"https://doi.org/10.1109/DRPT.2008.4523897","url":null,"abstract":"The invention of the phaser measurement unit (PMU) in mid 1980's enabled the synchronized measurements of voltages and currents in real time that has become the foundation of today's wide-area measurement, protection, and control (WAMP AC) systems. The trend in recent years is the steady increase of PMU installations worldwide for various applications, such as those targeted for State Estimation enhancement. Several algorithms/methods for optimal PMU placement have been introduced to minimize the system cost while still achieving the full observability of a power system with a minimum number of phasor measurements. These algorithms perform an optimization process by considering all system buses. In real systems, for practical reasons, some buses may be selected for mandatory PMU installations and some others can be selected as not desirable for PMU installations. In other words, a group of buses may be identified for the optimal placement. In this paper, a virtual data elimination preprocessing method and a matrix reduction algorithm are introduced for reducing the scale of a placement study. By identifying those buses with \"known status\", the method could significantly reduce the computation efforts. The methodology has been applied to four IEEE systems and the Brazilian National Interconnected Power System. The sizes of these systems before and after the reduction are tabulated to show the effectiveness of this method in reducing the computational effort. To prove the performance guarantee for the proposed algorithm, Lagrangian Relaxation has been applied to calculate the low bound of the minimum number of PMUs necessary for full observability. The results are shown in the simulation section.","PeriodicalId":240420,"journal":{"name":"2008 Third International Conference on Electric Utility Deregulation and Restructuring and Power Technologies","volume":"13 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":"133574354","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: 49

Multi-objective planning for distributed generation in distribution network 配电网分布式发电的多目标规划

2008 Third International Conference on Electric Utility Deregulation and Restructuring and Power Technologies Pub Date : 2008-04-06 DOI: 10.1109/DRPT.2008.4523861

Xiaobo Tang, G. Tang

引用次数: 19

Optimal design of frequency regulation service contract using mechanism design theory 利用机构设计理论对调频服务合同进行优化设计

2008 Third International Conference on Electric Utility Deregulation and Restructuring and Power Technologies Pub Date : 2008-04-06 DOI: 10.1109/DRPT.2008.4523429

Guogang Liu, Y. Liu, F. Wen, Z. Jing, Yao Zhang, Jian Fu

引用次数: 0

Electric energy measurement based on the effective absorbed power under non-sinusoidal conditions 基于非正弦条件下有效吸收功率的电能测量

2008 Third International Conference on Electric Utility Deregulation and Restructuring and Power Technologies Pub Date : 2008-04-06 DOI: 10.1109/DRPT.2008.4523752

L.X. Zhou, Z. Yin, X.N. Xiao, Y.W. Zhu, Z.Q. Wang

{"title":"Electric energy measurement based on the effective absorbed power under non-sinusoidal conditions","authors":"L.X. Zhou, Z. Yin, X.N. Xiao, Y.W. Zhu, Z.Q. Wang","doi":"10.1109/DRPT.2008.4523752","DOIUrl":"https://doi.org/10.1109/DRPT.2008.4523752","url":null,"abstract":"Along with the rapid development of power electronic technology, the application of non-liner load becomes more and more with the capacity becomes larger and larger. Massive harmonics are poured into the power grid, leading to the distortion of the system voltage and current. Meanwhile, the nonliner loads usually own complex characteristics such as power inrushing, three phase imbalance, harmonics, inter-harmonics, and so on, which directly affect the correctness and validity of energy measuring. Therefore, the energy metering instrument which designs based on the sine power theory or the traditional non-sinusoidal power theory can not reflect the real energy that the loads absorb form the system. The correct definition and measurement of power under distortion condition become a matter of common concern both to the power supply system and the customers. In this paper, IEEE Std. 1459-2000 is studied and a novel energy measuring method based on the effective absorbed power is put forward. Beginning with the analysis of energy transmission and the line-loss, the total energy of the system is quantified. The shortcomings of the traditional power theory and the corresponding algorithm in analyzing the energy measurement are studied comprehensively. In view of the background harmonic, the energy measuring methods are studied from the line-loss and effective absorbed power. The analysis results indicate that the method proposed in this paper can correctly reflect the power consumption of the surge loads and the exchange energy.","PeriodicalId":240420,"journal":{"name":"2008 Third International Conference on Electric Utility Deregulation and Restructuring and Power Technologies","volume":"25 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":"132165422","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

A simulation tool for calculating energy prices in competitive electricity markets 在竞争性电力市场中计算能源价格的模拟工具

2008 Third International Conference on Electric Utility Deregulation and Restructuring and Power Technologies Pub Date : 2008-04-06 DOI: 10.1109/DRPT.2008.4523371

Xiaokang Xu, D. Lane, M. Edmonds

引用次数: 4

Analyzing the effect of electric power industry reforms in Korea 分析韩国电力产业改革的效果

2008 Third International Conference on Electric Utility Deregulation and Restructuring and Power Technologies Pub Date : 2008-04-06 DOI: 10.1109/DRPT.2008.4523401

Y. Yoon, Sun-kyo Kim, Ho-chul Lee, Jong-keun Park

{"title":"Analyzing the effect of electric power industry reforms in Korea","authors":"Y. Yoon, Sun-kyo Kim, Ho-chul Lee, Jong-keun Park","doi":"10.1109/DRPT.2008.4523401","DOIUrl":"https://doi.org/10.1109/DRPT.2008.4523401","url":null,"abstract":"In this paper we introduce a general framework for evaluating the effect of first stage of electric power industry reforms in Korea by measuring and comparing the performance of electric power industry before and after the initiation of reforms. Understanding the effect of the first stage of reform can provide some valuable guidelines to how to implement the reforms. Keep in mind that the CBP market in Korea created through the implementation of the first stage of reforms is quite different from the usual sense of markets being implemented in US and other restructured regions. The proposed framework is constructed by first breaking the industry into essential functions that need to be carried out through value-chain analysis. Then, focusing on the generation business area, the specific functions and the sub-functions are defined and put into the form suitable for applying so-called performance-benchmarking technique. Once the specific functions are defined, then the efficiency measures are computed per each function using one of many effective methods. After evaluating the performance of industry through efficiency measures using the performance-benchmarking technique within the proposed framework, the externalities are considered such that the factors which affect the performance but have little to do with industry reforms are reasoned out thus forming a logical counterfactual. The comparison of industry performance between the actual outcome and the logical counterfactual leads to the proper evaluation. An illustrative example is presented in that the general framework introduced in this paper is then used to measure the efficiency of generation companies and/or generation units carrying out their respective functions from 1995 to 2006 and calculates the performance of electric power industry in Korea associated with these efficiency measures.","PeriodicalId":240420,"journal":{"name":"2008 Third International Conference on Electric Utility Deregulation and Restructuring and Power Technologies","volume":"30 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":"132743155","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

Application of photo-electrochemical hydrogen production for autonomous solar based electricity supply 光电化学制氢在自主太阳能供电中的应用

2008 Third International Conference on Electric Utility Deregulation and Restructuring and Power Technologies Pub Date : 2008-04-06 DOI: 10.1109/DRPT.2008.4523826

J. Wingens, G. Krost, D. Ostermann, U. Damm, J. Hess

引用次数: 6