2008 Third International Conference on Electric Utility Deregulation and Restructuring and Power Technologies最新文献_第8页

State estimation model and algorithm including PMU 包括PMU在内的状态估计模型和算法

2008 Third International Conference on Electric Utility Deregulation and Restructuring and Power Technologies Pub Date : 2008-04-06 DOI: 10.1109/DRPT.2008.4523571

Fang Chen, Xueshan Han, Z. Pan, Li Han

{"title":"State estimation model and algorithm including PMU","authors":"Fang Chen, Xueshan Han, Z. Pan, Li Han","doi":"10.1109/DRPT.2008.4523571","DOIUrl":"https://doi.org/10.1109/DRPT.2008.4523571","url":null,"abstract":"Because of the extensive application of phaser measurement unit (PMU) in the power system, traditional power system state estimation has been undergoing an essential change. In this paper, the traditional state estimator is assumed to be functioning normally in the absence of PMU data. Then under given the placement of PMU in the power system, this paper wants to explore the substantial contribution of PMU to power system state estimation. First, it discusses the difference between PMU measurement and SCADA measurement to explain the effect of PMU on traditional power system state estimation. Then, supposing the right value obtained from PMU, it extracts the simpleness of traditional power system state estimation with SCADA data only, and proposes the reduced power system state estimation model which is same as traditional ones. Following, it presents resultant change in handling the problems of the observability, bad data recognition, and estimation accuracy, as well as the solution algorithm of the power system state estimation on line. It is shown that PMU data provides the direct measurement of state which can significantly simplify the traditional state estimator and dose not require any change of the existing state estimator. Simulation result for the IEEE 13 bus system verifies the validity of the study.","PeriodicalId":240420,"journal":{"name":"2008 Third International Conference on Electric Utility Deregulation and Restructuring and Power Technologies","volume":"101 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":"115828685","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: 44

Market share forecast of electricity in city residents’ energy consumption based on Markov theory 基于马尔可夫理论的城市居民能源消费中电力市场份额预测

2008 Third International Conference on Electric Utility Deregulation and Restructuring and Power Technologies Pub Date : 2008-04-06 DOI: 10.1109/DRPT.2008.4523417

Hui Zhou, Yi Wang, Wei Wang, Yuan Zhao

引用次数: 3

A novel controller design for STATCOM based on the concept of area center of inertia 一种基于面积惯性中心概念的STATCOM控制器设计

2008 Third International Conference on Electric Utility Deregulation and Restructuring and Power Technologies Pub Date : 2008-04-06 DOI: 10.1109/DRPT.2008.4523604

Lin Zhu, Z. Cai, Y. Ni, Z. Lan, D. Gan

引用次数: 3

An electromagnetic transient model and control strategy for the voltage source converter based HVDC transmission 基于电压源变换器的高压直流输电电磁暂态模型及控制策略

2008 Third International Conference on Electric Utility Deregulation and Restructuring and Power Technologies Pub Date : 2008-04-06 DOI: 10.1109/DRPT.2008.4523742

Cheng Huang-fu, G. Tang, J. Ruan, Yan Wang

引用次数: 3

Design of the electricity market monitoring system 电力市场监控系统的设计

2008 Third International Conference on Electric Utility Deregulation and Restructuring and Power Technologies Pub Date : 2008-04-06 DOI: 10.1109/DRPT.2008.4523386

C. Gao, E. Bompard, R. Napoli, J. Zhou

{"title":"Design of the electricity market monitoring system","authors":"C. Gao, E. Bompard, R. Napoli, J. Zhou","doi":"10.1109/DRPT.2008.4523386","DOIUrl":"https://doi.org/10.1109/DRPT.2008.4523386","url":null,"abstract":"Due to the extreme importance of the power system, the operation of the electricity market has drawn much concern. The introduction of the electricity market aims to improve the efficiency, but meanwhile has brought many new problems, which cannot be found in the traditional monopoly system. Especially, in the economy aspect, power system has to face market risk other than the physical security problem. To find proper measures for market realization and adjustment, the authority should examine them carefully before their implementation. An electricity market monitoring system, which on one hand provides the references for market participants making strategic decisions and on the other hand is able to evaluate the impacts of specific measures or market context variation, is presented in this paper to help the regulator make decisions on market policy and the market participants foresee the market evolution. The monitoring system consists of two units, one is the market simulator, which detailed models the interaction between the market players by game theory and multi-agent system; the other is price forecast, which interprets the market evolution by mathematical or artificial intelligence approaches to foresee the prices. The two units cooperatively build a monitoring system for predicting the future market scenarios in different respects. Results of the numerical examples applying the preliminary monitoring system are presented and illustrated.","PeriodicalId":240420,"journal":{"name":"2008 Third International Conference on Electric Utility Deregulation and Restructuring and Power Technologies","volume":"124 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":"116380081","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: 9

Application of improved genetic algorithm combining sensitivity analysis to reactive power optimization for power system 结合灵敏度分析的改进遗传算法在电力系统无功优化中的应用

2008 Third International Conference on Electric Utility Deregulation and Restructuring and Power Technologies Pub Date : 2008-04-06 DOI: 10.1109/DRPT.2008.4523515

Yanping Chen, Yao Zhang, Ying Wei

{"title":"Application of improved genetic algorithm combining sensitivity analysis to reactive power optimization for power system","authors":"Yanping Chen, Yao Zhang, Ying Wei","doi":"10.1109/DRPT.2008.4523515","DOIUrl":"https://doi.org/10.1109/DRPT.2008.4523515","url":null,"abstract":"Applying SGA to practical large scale power networks reactive power optimization still existing problems like large searching space and time consuming. This paper advanced an improved genetic algorithm combining sensitivity analysis (IGACSA). The new algorithm combined sensitivity analysis to generate initial generation of individuals in stead the way of SGA. The crossover and mutation operation of SGA were improved in the IGACSA, the improved crossover operation in possession of the ability of fast local adjustment, the improved mutation operation combined sensitivity analysis to generate new individuals. Furthermore, IGACSA used sensitivity analysis to mini-adjust the result of IGA. In order to use IGACSA to fix on the capacity of new installed reactive power compensation equipments, two simple steps were adopted to suit for practical power system. In the end, applying the IGACSA to reactive power optimization for Shaoguan power network in Guangdong Province proved the algorithm proposed can cut down calculating time and achieve better results.","PeriodicalId":240420,"journal":{"name":"2008 Third International Conference on Electric Utility Deregulation and Restructuring and Power Technologies","volume":"159 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":"124460793","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

Study of brushless doubly-fed control for VSCF wind power generation system connected to grid 并网VSCF风力发电系统无刷双馈控制研究

2008 Third International Conference on Electric Utility Deregulation and Restructuring and Power Technologies Pub Date : 2008-04-06 DOI: 10.1109/DRPT.2008.4523823

Wang Qi, Cheng Xiao-hu, Fei Wan-min, Ji Yan-chao

{"title":"Study of brushless doubly-fed control for VSCF wind power generation system connected to grid","authors":"Wang Qi, Cheng Xiao-hu, Fei Wan-min, Ji Yan-chao","doi":"10.1109/DRPT.2008.4523823","DOIUrl":"https://doi.org/10.1109/DRPT.2008.4523823","url":null,"abstract":"A whole model for brushless doubly-fed wind generation system is presented and the model in includes wind turbine, gear-box and brushless doubly-fed machine (BDFM). Starting from d-q model of rotor under reference coordinate, a mathematical model of BDFM based on synchronous coordinates is researched. For the power system, a new model adapting to analyze the power system is gained by neglecting the electromagnetic transient change. According to the characteristics of BDFM and adopting flux linkage oriented vector transformation control technology, a new type of control for brushless doubly-fed VSCF wind power generation system connected to grid is developed. The doubly-fed control is adopted in this system, and the voltage compensate is avoiding for the PWM current-tracing control is used in the inner ring. By means of controlling the control winding of wind turbine this control system the AC excitation is implemented, and then the decoupling control of active and reactive power is realized, eventually the generating operation mode with high efficiency that can capture maximal wind energy is come true. Simulation results verify the availability and validity of the proposed control strategy.","PeriodicalId":240420,"journal":{"name":"2008 Third International Conference on Electric Utility Deregulation and Restructuring and Power Technologies","volume":"24 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":"125955477","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: 15

Effect of steam pressure fluctuation in turbine steam pipe on stability of power system 汽轮机蒸汽管内蒸汽压力波动对电力系统稳定性的影响

2008 Third International Conference on Electric Utility Deregulation and Restructuring and Power Technologies Pub Date : 2008-04-06 DOI: 10.1109/DRPT.2008.4523576

Han Zhiyong, H. Renmu, X. Yanhui

{"title":"Effect of steam pressure fluctuation in turbine steam pipe on stability of power system","authors":"Han Zhiyong, H. Renmu, X. Yanhui","doi":"10.1109/DRPT.2008.4523576","DOIUrl":"https://doi.org/10.1109/DRPT.2008.4523576","url":null,"abstract":"Low frequency oscillation is one of the most important dynamic stability problems in power system, which has great effects on the security and stability of power system. In recent years, low frequency oscillation phenomenon occurred for many times in China. A new fact is introduced which may lead to low frequency power oscillation of power system. In a power plant experiment, it was found that the quick operation of governing system would cause the pressure oscillation in turbine steam inlet pipeline. The frequency of pressure oscillation depends heavily on the structure and size of steam inlet pipeline. It is found that the frequency of the steam pressure continuous fluctuation is in the range of 0.1~10 Hz, which cover the frequency of power system low frequency oscillation. The interaction between the steam pressure and the power system may be occurred. On the basis of single machine infinite bus model, the process of quick operation of steam turbine governing valve and the effect of steam pressure fluctuation in turbine steam pipe on power system dynamic stability was researched through the simulation. The simulation results indicate that the quick operation of steam turbine governing valve may lead to power system low frequency oscillation, if the natural frequency of pressure fluctuation caused by governing valve quick operation is equal or close to the power system natural oscillation frequency. The conclusion can provide reference to research into the causes of power system low frequency oscillations.","PeriodicalId":240420,"journal":{"name":"2008 Third International Conference on Electric Utility Deregulation and Restructuring and Power Technologies","volume":"18 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":"124760339","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

Main electrical scheme’s reliability evaluation for ChuXiong ±800kV rectifier station based on advanced four state component model 基于先进四态分量模型的楚雄±800kV整流站主电气方案可靠性评价

2008 Third International Conference on Electric Utility Deregulation and Restructuring and Power Technologies Pub Date : 2008-04-06 DOI: 10.1109/DRPT.2008.4523448

Shu Hong-chun, Hu Ze-jiang, Zhang Jing-fang, Hu Cui

{"title":"Main electrical scheme’s reliability evaluation for ChuXiong ±800kV rectifier station based on advanced four state component model","authors":"Shu Hong-chun, Hu Ze-jiang, Zhang Jing-fang, Hu Cui","doi":"10.1109/DRPT.2008.4523448","DOIUrl":"https://doi.org/10.1109/DRPT.2008.4523448","url":null,"abstract":"The classical four-state component model haven't accord to practical situation because the equipment repairing technique based on condition of component developed quickly, and this paper put forwarded an advanced four state component model. That model redefined abnormal state and maintainable state, combined repair state based on condition of component and schedule repair state to repair state and then confirmed the conversion relationship and the parameter to each state. This paper put forwarded combining components and dividing subzone method to simplify the main electrical scheme to be a simple directional network, applied advanced four state component model in that network to calculate the subzone's reliability parameter. Applied the least path searching method to search the least path matrix for the network and predigested the method by matrix multiplication, enumerated each fault state of that network by analytical method, worked out the reliability index of that network by VC++. And the reliability index of network is the reliability index of main electrical scheme in ChuXiong plusmn800 kV rectifier station. At last this paper analyzed the result of main electrical scheme's reliability and it proved the method's validity which used in this paper.","PeriodicalId":240420,"journal":{"name":"2008 Third International Conference on Electric Utility Deregulation and Restructuring and Power Technologies","volume":"52 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":"124827048","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 phase selector based on mathematical morphology for double circuit transmission lines 基于数学形态学的双回路传输线选相器

2008 Third International Conference on Electric Utility Deregulation and Restructuring and Power Technologies Pub Date : 2008-04-06 DOI: 10.1109/DRPT.2008.4523799

Z. Lu, W. H. Tang, T. Ji, L. Jiang, Q.H. Wu

引用次数: 7