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2016 57th International Scientific Conference on Power and Electrical Engineering of Riga Technical University (RTUCON)最新文献

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Defining the equivalent inertia constant of generating unit based on electromechanical transient measurements 基于机电暂态测量的发电机组等效惯性常数的定义
2016 57th International Scientific Conference on Power and Electrical Engineering of Riga Technical University (RTUCON) Pub Date : 2016-10-01 DOI: 10.1109/RTUCON.2016.7763098
D. Bliznyuk, A. Berdin, A. Gerasimov
{"title":"Defining the equivalent inertia constant of generating unit based on electromechanical transient measurements","authors":"D. Bliznyuk, A. Berdin, A. Gerasimov","doi":"10.1109/RTUCON.2016.7763098","DOIUrl":"https://doi.org/10.1109/RTUCON.2016.7763098","url":null,"abstract":"A method for defining the inertia constant of a generating unit is proposed. It is based on a synchrophasor measurements approximation using the generator rotor swing equation. The input includes the measurements of the generator active power and rotor angle during electromechanical transients. The approach was validated by means of a mathematical simulation, experiments on the physical model and using field measurements during transients in the power system. The obtained results may be used for the simplified generating unit dynamic models application in transient analysis.","PeriodicalId":102691,"journal":{"name":"2016 57th International Scientific Conference on Power and Electrical Engineering of Riga Technical University (RTUCON)","volume":"46 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127011457","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
Robotic intelligence laboratory for overhead transmission lines assessment 架空输电线路评估机器人智能实验室
2016 57th International Scientific Conference on Power and Electrical Engineering of Riga Technical University (RTUCON) Pub Date : 2016-10-01 DOI: 10.1109/RTUCON.2016.7763123
A. Khalyasmaa, S. Dmitriev, A. Romanov
{"title":"Robotic intelligence laboratory for overhead transmission lines assessment","authors":"A. Khalyasmaa, S. Dmitriev, A. Romanov","doi":"10.1109/RTUCON.2016.7763123","DOIUrl":"https://doi.org/10.1109/RTUCON.2016.7763123","url":null,"abstract":"Overhead transmission lines integral assessment problem is considered in the paper. Failures diagnostic and analysis procedure based on artificial intelligence techniques is presented. The tool set for integral diagnostic of overhead lines and infrastructure is established. The possibility of the present tools arrangement on the base of land and air based autonomous mobile robots is offered. The concept of autonomous robotic intelligence laboratory creation for overhead power lines integral assessment comprising unmanned air vehicles, diagnostic tools set, servers for intelligent information processing and also equipment for laboratory independent operation in field conditions is offered.","PeriodicalId":102691,"journal":{"name":"2016 57th International Scientific Conference on Power and Electrical Engineering of Riga Technical University (RTUCON)","volume":"52 2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131304258","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: 8
Technical analysis of the economic viability of sea wave power stations 海浪发电站经济可行性的技术分析
2016 57th International Scientific Conference on Power and Electrical Engineering of Riga Technical University (RTUCON) Pub Date : 2016-10-01 DOI: 10.1109/RTUCON.2016.7763131
J. Beriņš
{"title":"Technical analysis of the economic viability of sea wave power stations","authors":"J. Beriņš","doi":"10.1109/RTUCON.2016.7763131","DOIUrl":"https://doi.org/10.1109/RTUCON.2016.7763131","url":null,"abstract":"This article is about one of the alternative forms of energy - the algorithm for the development of a sea wave energy converter, which is based on reflection, refraction, diffraction and interference analysis between waves and their energy transformers. This article provides information to the placement of a wave energy converter receiver, specially calculated parallel to the surface, thereby allowing obtaining wave energy step by step. It provides an insight into wave power plant optimization principles.","PeriodicalId":102691,"journal":{"name":"2016 57th International Scientific Conference on Power and Electrical Engineering of Riga Technical University (RTUCON)","volume":"59 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133656907","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
ANN-based forecasting of hydropower reservoir inflow 基于人工神经网络的水电站入库预测
2016 57th International Scientific Conference on Power and Electrical Engineering of Riga Technical University (RTUCON) Pub Date : 2016-10-01 DOI: 10.1109/RTUCON.2016.7763129
A. Sauhats, R. Petrichenko, Z. Broka, K. Baltputnis, Dmitrijs Soboļevskis
{"title":"ANN-based forecasting of hydropower reservoir inflow","authors":"A. Sauhats, R. Petrichenko, Z. Broka, K. Baltputnis, Dmitrijs Soboļevskis","doi":"10.1109/RTUCON.2016.7763129","DOIUrl":"https://doi.org/10.1109/RTUCON.2016.7763129","url":null,"abstract":"Reservoir inflow forecasting with artificial neural networks is presented in this paper. Different types of ANN input data were considered such as temperature, precipitation and historical water inflow. Performance of the hourly inflow forecasts was assessed based on a case study of a specific hydropower reservoir in Latvia. The results showed that all the approaches had similar prediction errors implying that for optimal hydropower scheduling uncertainties need to be modelled which is also proposed in this study through generation of several forecast realisations in addition to point predictions.","PeriodicalId":102691,"journal":{"name":"2016 57th International Scientific Conference on Power and Electrical Engineering of Riga Technical University (RTUCON)","volume":"30 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131295354","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: 17
Probabilistic reduction of generation in adequacy calculation 充分性计算中发电量的概率约简
2016 57th International Scientific Conference on Power and Electrical Engineering of Riga Technical University (RTUCON) Pub Date : 2016-10-01 DOI: 10.1109/RTUCON.2016.7763147
V. Oboskalov, Anatoly Mahnitko, J. Gerhards, D. Ignatiev
{"title":"Probabilistic reduction of generation in adequacy calculation","authors":"V. Oboskalov, Anatoly Mahnitko, J. Gerhards, D. Ignatiev","doi":"10.1109/RTUCON.2016.7763147","DOIUrl":"https://doi.org/10.1109/RTUCON.2016.7763147","url":null,"abstract":"Problems of a generation system reduction in calculations of a power system (PS) adequacy are considered. The attention is mostly focused on mathematical models, based on the binominal and Poisson distributions, Poisson failure flows and characteristic functions of random variables. The reduction procedures result in the disturbance of integer number of units in operation. It was shown that it is appropriate to carry out rounding-off and following correction of probabilistic indices using the criteria of capacities at hand and expected values of generation tripped equality. As a result of models comparison the preference is made for models, based on the binominal and Poisson distributions. In the case of huge PS units diversification the combined distribution is assumed to be used, emphasizing units with the highest capacity and equivalent the rest, in order to perform adjusted calculations by means of computer.","PeriodicalId":102691,"journal":{"name":"2016 57th International Scientific Conference on Power and Electrical Engineering of Riga Technical University (RTUCON)","volume":"15 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125102228","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
The application of stochastic differential equation models in the assessment of the economic feasibility of wind energy projects in Latvia 随机微分方程模型在拉脱维亚风能项目经济可行性评估中的应用
2016 57th International Scientific Conference on Power and Electrical Engineering of Riga Technical University (RTUCON) Pub Date : 2016-10-01 DOI: 10.1109/RTUCON.2016.7763108
D. Bezrukovs, A. Sauhatas
{"title":"The application of stochastic differential equation models in the assessment of the economic feasibility of wind energy projects in Latvia","authors":"D. Bezrukovs, A. Sauhatas","doi":"10.1109/RTUCON.2016.7763108","DOIUrl":"https://doi.org/10.1109/RTUCON.2016.7763108","url":null,"abstract":"The paper uses daily historical data on electricity prices in the Latvian segment of Nord Pool power market in combination with wind speed measurements conducted in the north-western part of the country in order to perform revenue forecast for a wind power generator park and access the economic feasibility of such projects in Latvia. The forecast of revenues is based on two stochastic differential equation models calibrated on the historical data of wind speed and electricity prices. Pre-testing procedures suggest that mean reverting Vasicek model can be used for wind speed modelling, while electricity price development is better described by a mean reverting model with jump diffusion. Monte Carlo simulation approach is used to generate the distribution of forecasted revenues and estimate project returns taking into consideration the cost structure and technical characteristics of an existing wind power plant in Latvia. The results of the study show that, given the historical market prices of electricity, wind energy potential on the north-western part of Latvia is insufficient to justify the construction of wind energy farms in the region for the considered wind generator type. In the absence of state support, a prudent approach to the selection of wind generator types should be chosen.","PeriodicalId":102691,"journal":{"name":"2016 57th International Scientific Conference on Power and Electrical Engineering of Riga Technical University (RTUCON)","volume":"65 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124252102","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: 2
Influence of VFD parameters on voltage stresses in low voltage windings 变频器参数对低压绕组电压应力的影响
2016 57th International Scientific Conference on Power and Electrical Engineering of Riga Technical University (RTUCON) Pub Date : 2016-10-01 DOI: 10.1109/RTUCON.2016.7763153
V. Bolgova, A. Leonov, D. Charkov
{"title":"Influence of VFD parameters on voltage stresses in low voltage windings","authors":"V. Bolgova, A. Leonov, D. Charkov","doi":"10.1109/RTUCON.2016.7763153","DOIUrl":"https://doi.org/10.1109/RTUCON.2016.7763153","url":null,"abstract":"Currently the frequency control is widely used to provide high level of induction motors efficiency. Studies show that typical for the variable frequency drive (VFD) severe electro-thermal stresses influencing on the windings insulation negatively affect the windings reliability. The need to thoroughly study the impact of influencing factors and to develop possible ways to minimize this impact stipulates the relevance of conducted research. In this paper the influence of the VFD parameters on the level of voltage stresses affecting the insulation of low-voltage induction motor windings is studied. The study of nature and magnitude of electrical stresses was carried out by building a simulation model in the graphical programming environment Matlab Simulink. The modelling results are presented and the main findings are discussed in this paper.","PeriodicalId":102691,"journal":{"name":"2016 57th International Scientific Conference on Power and Electrical Engineering of Riga Technical University (RTUCON)","volume":"32 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116606791","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: 4
Experimental study of the influence of single-phase short-circuits of power cable lines 110 and 220 kV on the operation of communications systems and automation 110和220 kV电力电缆单相短路对通信系统运行和自动化影响的实验研究
2016 57th International Scientific Conference on Power and Electrical Engineering of Riga Technical University (RTUCON) Pub Date : 2016-10-01 DOI: 10.1109/RTUCON.2016.7763120
V. M. Barinov, D. Kiesewetter
{"title":"Experimental study of the influence of single-phase short-circuits of power cable lines 110 and 220 kV on the operation of communications systems and automation","authors":"V. M. Barinov, D. Kiesewetter","doi":"10.1109/RTUCON.2016.7763120","DOIUrl":"https://doi.org/10.1109/RTUCON.2016.7763120","url":null,"abstract":"The results of experimental measurements of currents and voltages in the elements of cable power lines and communication lines at occurrence of single-phase short-circuit of power cable lines 110 and 220 kV are present. The effect of the short circuits on the operation of the communication cable lines that are laid in the same trench with power cables is evaluated. Explanations to the emerging effects and recommendations for practical use of the results obtained in design, operation and repair of cable lines are given.","PeriodicalId":102691,"journal":{"name":"2016 57th International Scientific Conference on Power and Electrical Engineering of Riga Technical University (RTUCON)","volume":"63 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127443131","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
Low-pass filter design of a current-source 1-ph grid-connected PV inverter 电流源1-ph并网光伏逆变器的低通滤波器设计
2016 57th International Scientific Conference on Power and Electrical Engineering of Riga Technical University (RTUCON) Pub Date : 2016-10-01 DOI: 10.1109/RTUCON.2016.7763111
G. Ertasgin, D. Whaley, W. Soong, N. Ertugrul
{"title":"Low-pass filter design of a current-source 1-ph grid-connected PV inverter","authors":"G. Ertasgin, D. Whaley, W. Soong, N. Ertugrul","doi":"10.1109/RTUCON.2016.7763111","DOIUrl":"https://doi.org/10.1109/RTUCON.2016.7763111","url":null,"abstract":"This paper addresses one of the critical sections of the current-source inverter, the output filter. Firstly, the background of low-pass output line filters for voltage-source inverters (VSI) and current-source inverters (CSI) are provided. Important factors such as filter resonance and damping are explained. Then four different damped CL filter circuits are discussed and the performance of the filter with a grid-connected CSI inverter is analysed. The filter normalisations for the design process are also provided. Finally, the selection of the filter parameters is examined.","PeriodicalId":102691,"journal":{"name":"2016 57th International Scientific Conference on Power and Electrical Engineering of Riga Technical University (RTUCON)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130673125","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
Impact of electric vehicle charging on the urban distribution network 电动汽车充电对城市配电网的影响
2016 57th International Scientific Conference on Power and Electrical Engineering of Riga Technical University (RTUCON) Pub Date : 2016-10-01 DOI: 10.1109/RTUCON.2016.7763134
L. Gračkova, I. Oleinikova
{"title":"Impact of electric vehicle charging on the urban distribution network","authors":"L. Gračkova, I. Oleinikova","doi":"10.1109/RTUCON.2016.7763134","DOIUrl":"https://doi.org/10.1109/RTUCON.2016.7763134","url":null,"abstract":"The case study examines the possibility of creating a park of slow and fast charging stations in the urban area of high population density. The criteria for placement of the charging stations park and their number, determined for the three transformer substations based on their utilization have been established. The studies were conducted using a Simiilink virtual model. The analysis indicated that the creation of the park service stations, as an additional load on the transformer substations does not cause an overload in the electrical network and does not affect the quality of electricity.","PeriodicalId":102691,"journal":{"name":"2016 57th International Scientific Conference on Power and Electrical Engineering of Riga Technical University (RTUCON)","volume":"10 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129039521","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
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