Power system technology Pub Date : 2014-10-05 DOI: 10.13335/J.1000-3673.PST.2014.10.010

Ji Feng, Cao Junzheng, C. Peng, Liu Jie

引用次数: 4

Fuzzy Theory Based Grid-Connected Power Control of Microgrid Containing Photovoltaic System 基于模糊理论的光伏微网并网功率控制

Power system technology Pub Date : 2014-09-05 DOI: 10.13335/J.1000-3673.PST.2014.09.014

Ai Qian Han Xueshan Zhao Yuanyuan Lü Tianguang

引用次数: 1

An Elliptical Fitting Algorithm Based Detection Method for Reverse Power 一种基于椭圆拟合算法的逆功率检测方法

Power system technology Pub Date : 2014-07-05 DOI: 10.13335/J.1000-3673.PST.2014.07.019

Gao Jinyan, Li Donghui

引用次数: 1

Improved Data Stream On-Line Segmentation Based Ultra Short-Term Load Forecasting 基于超短期负荷预测的改进数据流在线分割

Power system technology Pub Date : 2014-07-05 DOI: 10.13335/J.1000-3673.PST.2014.07.046

Conglan Tang, Jiping Lu, Yingzhao Xie, Zhang Lu

{"title":"Improved Data Stream On-Line Segmentation Based Ultra Short-Term Load Forecasting","authors":"Conglan Tang, Jiping Lu, Yingzhao Xie, Zhang Lu","doi":"10.13335/J.1000-3673.PST.2014.07.046","DOIUrl":"https://doi.org/10.13335/J.1000-3673.PST.2014.07.046","url":null,"abstract":"To improve both realtime performance and accuracy of ultra short-term load forecasting and to cope with the higher requirement of power grid on realtime load forecasting, based on improved data stream on-line segmentation an ultra short-term load forecasting method is proposed. Based on the time trend of load development, the realtime data stream processing is utilized in the proposed method to perform ultra short-term forecasting, then combining with the results of short-term load forecasting, which contain the whether factors and the effect of load cycle property, the realtime forecasting result at the segmentation point is corrected. The fast segmentation and forecasting ability of the proposed method avoid repeat modeling and improve the speed of forecasting; the realtime correction and handling of the segmentation point increase historical information utilization and decrease the error of segmentation point, thus the forecasting accuracy can be maintained at a better level. Actual load data is adopted to validate the effectiveness of the proposed model, and validation results show that both load forecasting accuracy and speed by the proposed model have an advantage over those by several conventional ultra short-term load forecasting algorithms, besides the forecasting error at the inflection point of load can be decreased and the proposed method can also adapt to the sudden change of the weather.","PeriodicalId":20420,"journal":{"name":"Power system technology","volume":"38 1","pages":"2014-2020"},"PeriodicalIF":0.0,"publicationDate":"2014-07-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"66320611","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

Power Betweenness Based Identification of Power Grid Critical Links 基于功率间性的电网关键链路识别

Power system technology Pub Date : 2014-07-05 DOI: 10.13335/J.1000-3673.PST.2014.07.029

W. Tao, Gao Cheng-bin, Gu Xueping, Liang Haiping

引用次数: 20

PSCAD Based Simulation and Analysis on PV Power Station 基于PSCAD的光伏电站仿真与分析

Power system technology Pub Date : 2014-07-05 DOI: 10.13335/J.1000-3673.PST.2014.07.020

Z. Hua, Xie Kai-gui

引用次数: 3

Research on Operational Characteristics and Core Simulation of the Third-Generation Nuclear Reactor AP1000 第三代核反应堆AP1000运行特性及堆芯仿真研究

Power system technology Pub Date : 2014-05-05 DOI: 10.13335/J.1000-3673.PST.2014.05.011

Wu Ping, Yang Yanchen, Chen Hao, Yi Jun, Bu Guang-quan

引用次数: 5

A Second Order Generalized Integrator Based Flexible Power Control for Single-Phase Photovoltaic Grid-Connected Inverter 基于二阶广义积分器的单相光伏并网逆变器柔性功率控制

Power system technology Pub Date : 2014-04-05 DOI: 10.13335/J.1000-3673.PST.2014.04.020

Yang Yong, Li Shihua, Z. Binbin, Tao Xuehui, Zhao Fangping, Wang Zhi-bing

引用次数: 2

A Method to Evaluate Comprehensive Benefits of Hybrid Wind Power-Pumped Storage System 风电-抽水蓄能混合系统综合效益评估方法

Power system technology Pub Date : 2014-02-05 DOI: 10.13335/J.1000-3673.PST.2014.02.020

X. Bai, Cong Jing, Gao Xiaofeng, Gu Yu

{"title":"A Method to Evaluate Comprehensive Benefits of Hybrid Wind Power-Pumped Storage System","authors":"X. Bai, Cong Jing, Gao Xiaofeng, Gu Yu","doi":"10.13335/J.1000-3673.PST.2014.02.020","DOIUrl":"https://doi.org/10.13335/J.1000-3673.PST.2014.02.020","url":null,"abstract":"In allusion to restricted grid-connected capacity and high wind power curtailment when large-scale wind farm is grid-connected,in usual it is considered to improve power grid's ability of accommodating wind power by energy storage system,however how to evaluate the overall efficiency of the hybrid wind power-pumped storage system is the problem to be solved well.For this reason,the investment cost,economic benefit of pumped storage system and its operational constraints are analyzed,thus the follow-up mechanism between comprehensive benefits of hybrid wind power-pumped storage system and energy storage capacity under optimized operating condition of regional power grid is revealed,and a mathematical model to solve the comprehensive benefits is established and a method to evaluate the comprehensive benefits is proposed.Based on output curves of mutually matched thermal generation units,wind power and load characteristics of power grid and combining with the installation capacity of thermal generation units and utilizing the incidence relation between system frequency and load(or the change of power generation),the proposed method quantitatively analyzes the impacts of the change of such factors of pumped storage station as its capacity,service life,cost and revenue on comprehensive benefits and power grid's accommodation ability of wind power.Case analysis shows that proposed evaluation method is effective.","PeriodicalId":20420,"journal":{"name":"Power system technology","volume":"38 1","pages":"400-404"},"PeriodicalIF":0.0,"publicationDate":"2014-02-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"66319931","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

Analysis and Fitting of the Time-domain Waveform of the Audible Noise Caused by Single Positive Corona Source on the Conductor 导体上单个正电晕源可听噪声时域波形的分析与拟合

Power system technology Pub Date : 2014-01-01 DOI: 10.13335/J.1000-3673.PST.2014.06.019

Xuebao Li, X. Cui, T. Lu, Di Zhang

{"title":"Analysis and Fitting of the Time-domain Waveform of the Audible Noise Caused by Single Positive Corona Source on the Conductor","authors":"Xuebao Li, X. Cui, T. Lu, Di Zhang","doi":"10.13335/J.1000-3673.PST.2014.06.019","DOIUrl":"https://doi.org/10.13335/J.1000-3673.PST.2014.06.019","url":null,"abstract":"The time-domain waveform of audible noise caused by the discharge of single positive corona source is obtained by the time-domain test platform set up in the laboratory. According to the pulse characteristic of time-domain waveform of audible noise it is proposed to utilize segmented double-exponential function to fit single time-domain pulse waveform of single audible noise to obtain empirical waveform, and through the comparative research on fitting results and measured results in time-domain and frequency-domain the reasonableness of the proposed method of the fitted waveform is validated. Finally, based on the measured results of long-term audible noise in time-domain the statistical characteristics of fitting parameters of the segmented double-exponential function under different voltages and that of waveform parameters of audible noise. Experimental results show that due to the randomness of corona discharge, the pulse waveform parameters and waveform fitting parameters evidently fluctuate under the same voltage; the time interval of audible noise pulse decreased with the increase of the applied voltage, however the pulse width and its apparent duration slightly varies under different voltages.","PeriodicalId":20420,"journal":{"name":"Power system technology","volume":"38 1","pages":"1542-1548"},"PeriodicalIF":0.0,"publicationDate":"2014-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"66320122","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

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