2005 International Power Engineering Conference最新文献_第2页

Energy function based controllers of superconducting generators with high response excitation 基于能量函数的高响应激励超导发电机控制器

2005 International Power Engineering Conference Pub Date : 1900-01-01 DOI: 10.1109/IPEC.2005.207036

W. Sae-Kok, A. Yokoyama, T. Nitta

引用次数: 1

Development of on-line real-time PC based frequency meter and frequency relay for monitoring, control and protection of HV/ EHV power system 基于PC的在线实时频率计和频率继电器的研制，用于高压/超高压电力系统的监测、控制和保护

2005 International Power Engineering Conference Pub Date : 1900-01-01 DOI: 10.1109/IPEC.2005.206872

T. K. Sengupta, A. Das, A. Mukhopadhya

引用次数: 2

The result analysis of the power loss 3-phase induction motor with PWM inverter supply 采用PWM逆变电源的三相异步电动机的功率损耗结果分析

2005 International Power Engineering Conference Pub Date : 1900-01-01 DOI: 10.1109/IPEC.2005.207024

C. Thammarat, S. Tadsuan, B. Suechoey, S. Bunjongjit

{"title":"The result analysis of the power loss 3-phase induction motor with PWM inverter supply","authors":"C. Thammarat, S. Tadsuan, B. Suechoey, S. Bunjongjit","doi":"10.1109/IPEC.2005.207024","DOIUrl":"https://doi.org/10.1109/IPEC.2005.207024","url":null,"abstract":"The purpose of this research is to study the power loss generating of the PWM inverter and the 1 HP 380 V 3-phase squirrel cage induction motor. The test procedure was performed by varying fundamental frequency in the range 25-50 Hz and at constant 1.5 kHz - PWM inverter switching frequency, as a source to the 3-phase 380 V squirrel cage induction motor in star connection with 5.1 N.m constant torque load. The test analysis was to record the input/output voltage/current waveforms by using YOKOGAWA DL1640 storage oscilloscope. Then, using the function FFT program was to determine the variety parameters at each harmonic from those waveforms. The total power loss and efficiency a were calculated by those parameters. The results show the input power is minimum at 25 Hz fundamental frequency and maximum at 50 Hz. But the efficiency is minimum at 25 Hz fundamental frequency and maximum at 50 Hz. The minimum motor power loss is at 35-40 Hz fundamental frequency and the maximum inverter power loss at 81-85% efficiency is around 25-50 Hz fundamental frequency. And also, this is the useful information in designed inverter process to extend the motor' life due to the overheat from power loss","PeriodicalId":164802,"journal":{"name":"2005 International Power Engineering Conference","volume":"22 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125939634","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: 16

The influence of model mismatch to power system calculation, part I: on the steady state calculation 模型失配对电力系统计算的影响，第一部分:对稳态计算的影响

2005 International Power Engineering Conference Pub Date : 1900-01-01 DOI: 10.1109/IPEC.2005.207075

Mao Anjia, Yue Jiaxi, Guo Zhizhong

{"title":"The influence of model mismatch to power system calculation, part I: on the steady state calculation","authors":"Mao Anjia, Yue Jiaxi, Guo Zhizhong","doi":"10.1109/IPEC.2005.207075","DOIUrl":"https://doi.org/10.1109/IPEC.2005.207075","url":null,"abstract":"Secure and reliable operation of power system is significant for nation's economy development and society stability. To ascertain this, analysis and calculation plays an important role. Power system calculations can be classified into three categories in time domain: for the past, for the present and for the future respectively. And the calculations for the future seem to be more significant to support power system operation and make production arrangement. However, almost all the calculations of power system are based on the mathematic models established from the physical system; and the models may have various errors and mismatch the actual system, especially for the calculations facing the future. The mismatch between calculation model and actual system influences the analysis result and the operation of power system. In this paper, the influence of two kinds of model mismatches injection mismatch and grid structure mismatch on the actual system are analyzed for power flow calculation using matrix analysis method. The results show that the calculation errors of injection parameter mismatch are approximately linear to the mismatch quantities, and the calculation errors of grid structure mismatch are closely related to the admittance of the mismatching branch and the phase-angle difference of its node voltage. Because the mismatch between calculation model and real system always exists, so this paper also suggests that we should depend more on measurements rather than calculation models in power system analysis","PeriodicalId":164802,"journal":{"name":"2005 International Power Engineering Conference","volume":"62 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126123879","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

Nonlinear robust decentralized control of multimachine power systems 多机电力系统的非线性鲁棒分散控制

2005 International Power Engineering Conference Pub Date : 1900-01-01 DOI: 10.1109/IPEC.2005.207038

Hongying Li, Youyi Wang

引用次数: 13

Historical load curve correction for short-term load forecasting 短期负荷预测的历史负荷曲线修正

2005 International Power Engineering Conference Pub Date : 1900-01-01 DOI: 10.1109/IPEC.2005.206875

Jingfei Yang, J. Stenzel

引用次数: 10

A new protection algorithm for EHV transmission line based on singularity detection of fault transient voltage 一种基于故障暂态电压奇异检测的超高压输电线路保护新算法

2005 International Power Engineering Conference Pub Date : 1900-01-01 DOI: 10.1109/IPEC.2005.206979

Ming-yu Yang, Wan-Ye Yao, Zengping Wang, Yanjun Jiao, Ju Zhang

引用次数: 2

Load forecasting based on intelligence information processing 基于智能信息处理的负荷预测

2005 International Power Engineering Conference Pub Date : 1900-01-01 DOI: 10.1109/IPEC.2005.206946

Zheng Hua, Xie Li, Zhang Li-zi

引用次数: 0

Fault analysis of advanced series compensated line using S-transform and pattern recognition approach 基于s变换和模式识别的高级串联补偿线路故障分析

2005 International Power Engineering Conference Pub Date : 1900-01-01 DOI: 10.1109/IPEC.2005.206956

P. Dash, S. Samantaray, G. Panda

引用次数: 8

Process improvement in distribution for reorganization of a state electricity board 国家电力局改组配电流程改进

2005 International Power Engineering Conference Pub Date : 1900-01-01 DOI: 10.1109/IPEC.2005.207115

R. Lahiri, P. Banerjee, S. Cgowdhury, A. Saha, S. Chowdhury

引用次数: 0