2010 9th International Conference on Environment and Electrical Engineering最新文献

Proper setting of underfrequency load shedding relays in industrial plants 工业厂房低频减载继电器的合理设置

2010 9th International Conference on Environment and Electrical Engineering Pub Date : 2010-05-16 DOI: 10.1109/EEEIC.2010.5489970

B. Khaki, Shahram Montaser Kouhsari

引用次数: 5

Electrical behaviour of conducting silicon rubber under short high current stress 导电硅橡胶在短时大电流应力下的电学行为

2010 9th International Conference on Environment and Electrical Engineering Pub Date : 2010-05-16 DOI: 10.1109/EEEIC.2010.5490032

A. Napierala

引用次数: 1

Characterization of magnetic field at distribution substations 配电变电站磁场特性

2010 9th International Conference on Environment and Electrical Engineering Pub Date : 2010-05-16 DOI: 10.1109/EEEIC.2010.5489920

I. Said, H. Hussain, V. Dave

引用次数: 8

Impact of new unit installations on power system reliability and ancillary services requirements 新装置对电力系统可靠性和辅助服务要求的影响

2010 9th International Conference on Environment and Electrical Engineering Pub Date : 2010-05-16 DOI: 10.1109/EEEIC.2010.5489977

O. Novak, Tomáš Strnad, P. Horáčk, J. Fantík

{"title":"Impact of new unit installations on power system reliability and ancillary services requirements","authors":"O. Novak, Tomáš Strnad, P. Horáčk, J. Fantík","doi":"10.1109/EEEIC.2010.5489977","DOIUrl":"https://doi.org/10.1109/EEEIC.2010.5489977","url":null,"abstract":"Installing new power generation unit always effects operation and performance of a power system including balance between load and generation. Consequently, demand for power reserves the power balancing authority has to acquire for keeping the power system in the equilibrium is changing. Restructuring power system in terms of shutting down old generation units, installing new ones or changing operational characteristics of the existing units will result in different needs for the amount and dynamics of power reserves in the respective categories. The paper studies the situation when the portfolio of power generation units is planned to be changed, new units are going to be installed and some old ones shut down. The effect on power system reliability and change in demand for ancillary services (AS) which are needed to meet the reliability standards is analyzed. Power system reliability is expressed in terms of reliability indices as used by the Czech TSO. Two scenarios of future development of power unit portfolio differ in number and capacity of new units. Finally the impact of new units on AS reservation cost is shown and discussed.","PeriodicalId":197298,"journal":{"name":"2010 9th International Conference on Environment and Electrical Engineering","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-05-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122640034","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

On the use of voltage stability index to prevent undesirable distance relay operation during voltage instability 利用电压稳定指标防止电压不稳定时继电器误动作

2010 9th International Conference on Environment and Electrical Engineering Pub Date : 2010-05-16 DOI: 10.1109/EEEIC.2010.5489947

Ahmad Farid Bin Abidin, A. Mohamed

引用次数: 6

Design of a PV/wind hybrid system for telecommunication load in Borneo region 婆罗洲地区电信负荷光伏/风力混合系统的设计

2010 9th International Conference on Environment and Electrical Engineering Pub Date : 2010-05-16 DOI: 10.1109/EEEIC.2010.5490433

D. Chia, B. Yong, R. Rajkumar, V. Ramachandaramurthy

引用次数: 7

Identification of critical aging segments and hotspots of power transmission lines 输电线路关键老化段和热点的识别

2010 9th International Conference on Environment and Electrical Engineering Pub Date : 2010-05-16 DOI: 10.1109/EEEIC.2010.5489965

J. Heckenbergerova, P. Musílek, M. I. Bhuiyan, D. Koval, E. Pelikán

{"title":"Identification of critical aging segments and hotspots of power transmission lines","authors":"J. Heckenbergerova, P. Musílek, M. I. Bhuiyan, D. Koval, E. Pelikán","doi":"10.1109/EEEIC.2010.5489965","DOIUrl":"https://doi.org/10.1109/EEEIC.2010.5489965","url":null,"abstract":"Localization of hotspots and critical aging segments of transmission lines is important for operation and asset management of power transmission systems. Conductors can lose their tensile strength due to the adverse effects of conductor aging caused by annealing. Although the loss of conductor strength is gradual, it accumulates over time and increases the probability of outages and blackouts. Therefore, it is important to keep track of conductor temperatures over time and in space, in order to identify segments of power transmission network that may require more close attention, repairs, or reinforcements. This paper describes and illustrates a new methodology for localization of hotspots and identification of critical aging segments of power transmission lines. The methodology uses load information and weather conditions derived from historical weather reanalysis to derive a time series of spatially resolved map of conductor temperatures. The temperature map is then used to estimate loss of conductor tensile strength for each span of the transmission line. The process is illustrated for a sample transmission line, using assumed load current and historical weather information spanning a period of five years. The simulation results show that the proposed approach provides information vital for transmission network operating procedures and transmission asset management.","PeriodicalId":197298,"journal":{"name":"2010 9th International Conference on Environment and Electrical Engineering","volume":"33 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-05-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123390259","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

Spectrum of the beam wandering noise 波束徘徊噪声的频谱

2010 9th International Conference on Environment and Electrical Engineering Pub Date : 2010-05-16 DOI: 10.1109/EEEIC.2010.5489917

J. Diblík

引用次数: 2

LMI-based robust wide-area time-delay damping control of SSSC-type FACTS device for stability enhancement of power system 基于lmi的sssc型FACTS鲁棒广域时延阻尼控制，增强电力系统稳定性

2010 9th International Conference on Environment and Electrical Engineering Pub Date : 2010-05-16 DOI: 10.1109/EEEIC.2010.5489929

Yong Li, C. Rehtanz, Dechang Yang, U. Häger, Fang Liu, L. Luo, Jiazhu Xu

{"title":"LMI-based robust wide-area time-delay damping control of SSSC-type FACTS device for stability enhancement of power system","authors":"Yong Li, C. Rehtanz, Dechang Yang, U. Häger, Fang Liu, L. Luo, Jiazhu Xu","doi":"10.1109/EEEIC.2010.5489929","DOIUrl":"https://doi.org/10.1109/EEEIC.2010.5489929","url":null,"abstract":"This paper presents a linear matrix inequality (LMI) method for the design of the wide-area time-delay damping (WATDD) controller of static synchronous series compensator (SSSC)-type flexible ac transmission system (FACTS) device to enhance the power stability of the interconnected power systems. Firstly, in order to reveal the single-input multi-output (SIMO) characteristic of the open-loop power system with SSSC-type FACTS device, the prediction error estimation (PEE) algorithm based system identification method is applied to fit a special SIMO linear model. Then, based on the robust control theory and LMI method, the identified linear model is formulated as the standard control problem with the time-delay of the input signals of the WATDD controller, and combined with the designed state observer for the input state variables of the WATDD controller, the control parameters are optimized by the LMI iterate solution algorithm. Finally, the nonlinear simulation on the typical 2-area 4-machine system installed with SSSC-type WATDD controller is performed to verify the LMI-based design method and the proposed SSSC-type WATDD controller.","PeriodicalId":197298,"journal":{"name":"2010 9th International Conference on Environment and Electrical Engineering","volume":"95 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-05-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121670335","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

Comparison of weighted-least-squares power system state estimation in polar and rectangular coordinate systems 极坐标与直角坐标系下加权最小二乘电力系统状态估计的比较

2010 9th International Conference on Environment and Electrical Engineering Pub Date : 2010-05-16 DOI: 10.1109/EEEIC.2010.5489955

T. Okoń, K. Wilkosz

引用次数: 12