2008 Third International Conference on Electric Utility Deregulation and Restructuring and Power Technologies最新文献_第3页

A comprehensive pole control unit design for HVDC converter station 高压直流换流站综合杆控单元设计

2008 Third International Conference on Electric Utility Deregulation and Restructuring and Power Technologies Pub Date : 2008-04-06 DOI: 10.1109/DRPT.2008.4523702

Yue Yuan, Liang She, Hang Zhang, Xiaoming Yu, Jia Sun

引用次数: 4

A practicable algorithm for active power economic dispatch 一种实用的有功电力经济调度算法

2008 Third International Conference on Electric Utility Deregulation and Restructuring and Power Technologies Pub Date : 2008-04-06 DOI: 10.1109/DRPT.2008.4523525

Xingquan Ji, Zhipeng Liu, F. Wen

引用次数: 0

Dynamic multi-stage transmission network expansion planning 动态多级输电网扩容规划

2008 Third International Conference on Electric Utility Deregulation and Restructuring and Power Technologies Pub Date : 2008-04-06 DOI: 10.1109/DRPT.2008.4523483

Qiuxia Yu, Jianbo Guo, X. Duan

引用次数: 8

A voltage quality detection method 一种电压质量检测方法

2008 Third International Conference on Electric Utility Deregulation and Restructuring and Power Technologies Pub Date : 2008-04-06 DOI: 10.1109/DRPT.2008.4523806

Zhe Chen, M. Wei

引用次数: 8

Study of information model for wide-area backup protection agent in substation based on IEC61850 基于IEC61850的变电站广域后备保护剂信息模型研究

2008 Third International Conference on Electric Utility Deregulation and Restructuring and Power Technologies Pub Date : 2008-04-06 DOI: 10.1109/DRPT.2008.4523778

Xiaoyang Tong, Xiaoru Wang, Lijie Ding

{"title":"Study of information model for wide-area backup protection agent in substation based on IEC61850","authors":"Xiaoyang Tong, Xiaoru Wang, Lijie Ding","doi":"10.1109/DRPT.2008.4523778","DOIUrl":"https://doi.org/10.1109/DRPT.2008.4523778","url":null,"abstract":"Agent-based wide-area backup protection (WABP) systems have been studied to improve the security of power system in recent years. IEC61850 has become an approved international communication standard for substation automation system. In order to make WABP device conform to the developing of substation automation system, the information model of wide-area backup protection based on IEC61850 is proposed in the paper. According to a kind of WABP algorithm, a decentralized and distributed architecture of WABP multi- agent system is given, in which the negotiation between protection agents is peer-to-peer manner. The WABP agent residing in protection IED (Intelligent Electronic Device) is regarded as a special logical node. The collaboration relations and information flows between WABP agent and conventional logical nodes are analyzed. The functions of WABP IED can be divided to three layers: interface layer, advanced process layer and basic computing layer. The remote message transferring principle for WABP agent in different substations is studied. The negotiation messages, which include staged distance protection actions, synchronous current signals and the fault judgments for transmission line, are organized with GOOSE or SAV. HDP or TCP is adopted to transmit the messages among the substations according to the types of messages. The communication agent in communication manager machine is responsible for forwarding remote messages from/to WABP IED. The information model for WABP agent has been designed and validated in EPOCHS platform. The work may provide a reference for the developing of wide-area protection device.","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":"116586622","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: 7

A new solution to generators start-up sequence during power system restoration 电力系统恢复过程中发电机启动顺序的一种新解决方案

2008 Third International Conference on Electric Utility Deregulation and Restructuring and Power Technologies Pub Date : 2008-04-06 DOI: 10.1109/DRPT.2008.4523894

Qiang Liu, Libao Shi, Ming Zhou, Gengyin Li, Y. Ni

引用次数: 17

Sampling frequency self-adapting software algorithm in protection relay measure and control system 继电保护测控系统中采样频率自适应软件算法

2008 Third International Conference on Electric Utility Deregulation and Restructuring and Power Technologies Pub Date : 2008-04-06 DOI: 10.1109/DRPT.2008.4523715

Fei Wang, Zenggiang Mi, Qixun Yang

引用次数: 1

Investigation on the impact of news on volatility in load time series 新闻对负荷时间序列波动率影响的研究

2008 Third International Conference on Electric Utility Deregulation and Restructuring and Power Technologies Pub Date : 2008-04-06 DOI: 10.1109/DRPT.2008.4523629

Hao Chen, Jie Wu

{"title":"Investigation on the impact of news on volatility in load time series","authors":"Hao Chen, Jie Wu","doi":"10.1109/DRPT.2008.4523629","DOIUrl":"https://doi.org/10.1109/DRPT.2008.4523629","url":null,"abstract":"Load forecasting is of great importance in power system. With the development of the electricity market, the precision of load forecasting is paid more attention to than ever before. The investigation on characteristics of load time series is beneficial. In this paper, by employing the ARCH type models, the asymmetric characteristics of load series are discussed and an investigation on the impact of news on volatility is represented. Several interesting results are documented. The utility of the ARCH-type models with different empirical conditional distributions in describing time-varying volatility are demonstrated and the reverse leverage effect is reaffirmed by the asymmetric parameters estimation. Owing to the news impact curve (NIC) analysis, the responses in volatility of time series to the sign and the magnitude of the idiosyncratic shocks are highlighted. All the results are mutually confirmed in spite of different model specifications. The empirical results also show the satisfying forecasting ability of the models in view of some standard summery statistics. The asymmetric GARCH models may be a valid and promising method for load time series analysis.","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":"128557839","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

Islanding detection of wind farms by THD THD对风电场的孤岛探测

2008 Third International Conference on Electric Utility Deregulation and Restructuring and Power Technologies Pub Date : 2008-04-06 DOI: 10.1109/DRPT.2008.4523885

H. K. Karegar, A. Shataee

引用次数: 26

Investigation of turbine generator rotor winding inter-turn short circuit fault based on harmonic detection 基于谐波检测的汽轮发电机转子绕组匝间短路故障研究

2008 Third International Conference on Electric Utility Deregulation and Restructuring and Power Technologies Pub Date : 2008-04-06 DOI: 10.1109/DRPT.2008.4523521

Wu Yucai, Li Yonggang, Wan Shuting, L. Heming

{"title":"Investigation of turbine generator rotor winding inter-turn short circuit fault based on harmonic detection","authors":"Wu Yucai, Li Yonggang, Wan Shuting, L. Heming","doi":"10.1109/DRPT.2008.4523521","DOIUrl":"https://doi.org/10.1109/DRPT.2008.4523521","url":null,"abstract":"Firstly, the magnetic motive force distribution of the steam turbine generator excitation windings was analyzed, and the mathematic model of MMF was established. Then the change of MMF caused by rotor inter-turn short circuit was examined, and the MMF after inter-turn short circuit happens as the superposition of the normal MMF before inter-turn short circuit happens and the MMF produced by short circuit turns with opposite excitation current. As the former is completely symmetrical, only the opposite MMF produced by short turns was analyzed, and harmonic components with various orders were gained by Fourier analysis. The electromotive force induced in stator windings was got considering the air-gap eccentricity, and the theoretical deduction illustrate that the eccentricity has no influence on the induced electromotive force of the stator windings. The three-phase symmetrical currents of the stator produced a new revolving magnetic motive force, and induced harmonics in rotor windings, whose characteristic spectrum differs from that in normal conditions. The theory was validated by experiments at last and the method that employs harmonics detection to diagnose the inter-turn short circuit malfunction of the steam turbine generator was established.","PeriodicalId":240420,"journal":{"name":"2008 Third International Conference on Electric Utility Deregulation and Restructuring and Power Technologies","volume":"11 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":"126840876","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: 7