2016 Electric Power Quality and Supply Reliability (PQ)最新文献_第4页

Communication architecture for monitoring of HVDC system based on IEC 61850 基于IEC 61850的高压直流系统监控通信体系结构

2016 Electric Power Quality and Supply Reliability (PQ) Pub Date : 2016-08-01 DOI: 10.1109/PQ.2016.7724123

Bizzat Hussain Zaidi, S. Hong, Daehyun Kwon

引用次数: 2

GA-based optimal droop control approach to improve voltage regulation and equal power sharing for islanded DC microgrids 基于遗传算法的孤岛直流微电网电压调节和均分的最优下垂控制方法

2016 Electric Power Quality and Supply Reliability (PQ) Pub Date : 2016-08-01 DOI: 10.1109/PQ.2016.7724104

A. Basati, M. Menhaj, A. Fakharian

引用次数: 12

Vacuum breaker simulation for switching overvoltage study 真空断路器开关过电压仿真研究

2016 Electric Power Quality and Supply Reliability (PQ) Pub Date : 2016-08-01 DOI: 10.1109/PQ.2016.7724126

D. Ivanchenko, Nikita G. Novozhylov

引用次数: 3

Influence of 380 kV AC systems on the maintenance conditions of the HVDC system in a hybrid AC/DC overhead line 380kv交流系统对交直流混合架空线直流系统维护条件的影响

2016 Electric Power Quality and Supply Reliability (PQ) Pub Date : 2016-08-01 DOI: 10.1109/PQ.2016.7724121

I. Konotop, A. Novitskiy, D. Westermann

引用次数: 0

Hybrid power active filter - effectiveness of passive filter on the reduction of voltage and current distortion 混合电力有源滤波器-无源滤波器对降低电压和电流畸变的有效性

2016 Electric Power Quality and Supply Reliability (PQ) Pub Date : 2016-08-01 DOI: 10.1109/PQ.2016.7724095

C. Mboving, Z. Hanzelka

引用次数: 6

New method for calculation of the harmonics in the residual earth fault current in isolated and compensated networks 提出了一种计算隔离补偿电网接地残流谐波的新方法

2016 Electric Power Quality and Supply Reliability (PQ) Pub Date : 2016-08-01 DOI: 10.1109/PQ.2016.7724132

U. Schmidt, K. Frowein, G. Druml, P. Schegner

{"title":"New method for calculation of the harmonics in the residual earth fault current in isolated and compensated networks","authors":"U. Schmidt, K. Frowein, G. Druml, P. Schegner","doi":"10.1109/PQ.2016.7724132","DOIUrl":"https://doi.org/10.1109/PQ.2016.7724132","url":null,"abstract":"In European distribution networks the resonant-ground system dominates. The advantages of the resonance neutral earthing are based mainly on the very low single-pole fault current, the residual earth fault current IRES. The growing use of both, cables and power electronics, increases the residual earth fault current IRES. In the case of a single-pole earth fault, harmonic components in residual earth fault current IRES can reach values, which can violate the limits defined by standards. Up to now, the estimation of the residual earth fault current IRES is usually done with measurements in the field by solid grounding of one phase at the bus bar in the substation. However, these measurements do not correspond to the real fault conditions. Ground faults occur anywhere in the network with relatively high fault resistances. In this paper a new method is presented to enable an accurate estimation of the residual earth fault current IRES during the earth fault by using the harmonics measurement of the voltages during the healthy state of the network, the network configuration and the expected impedance at the fault location. The results of the new method were verified in real field tests and will be also presented in this paper.","PeriodicalId":6470,"journal":{"name":"2016 Electric Power Quality and Supply Reliability (PQ)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2016-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84966131","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

Stability enhancement by VSC-HVDC with a supplementary frequency control strategy in case of system splits 在系统分裂情况下，VSC-HVDC通过补充频率控制策略增强稳定性

2016 Electric Power Quality and Supply Reliability (PQ) Pub Date : 2016-08-01 DOI: 10.1109/PQ.2016.7724105

Janek Massmann, A. Roehder, Bernhard Fuchs, A. Schnettler

引用次数: 1

MV cable temperature characteristics in dependence of load current, ambient environment and temperature. determination of the critical environment 中压电缆的温度特性与负载电流、环境和温度的关系。关键环境的确定

2016 Electric Power Quality and Supply Reliability (PQ) Pub Date : 2016-08-01 DOI: 10.1109/PQ.2016.7724090

J. Blūms, M. Budahs, J. Černovs, Ilgvars Gorņevs, V. Jurķāns

{"title":"MV cable temperature characteristics in dependence of load current, ambient environment and temperature. determination of the critical environment","authors":"J. Blūms, M. Budahs, J. Černovs, Ilgvars Gorņevs, V. Jurķāns","doi":"10.1109/PQ.2016.7724090","DOIUrl":"https://doi.org/10.1109/PQ.2016.7724090","url":null,"abstract":"The paper presents results of Latvian distribution system operator Sadales tikls AS (ST) and Riga Technical University (RTU) joint research on possibilities to increase the permissible loading level of the operating MV cables in order to improve the efficiency of the existing network assets usage and increase the supply reliability. Permissible loading level determination of the operating MV cables from the heating point of view is affected by many variable factors such as ambient environment, temperature, number and configuration of the cables etc. To estimate the temperature characteristics in dependence of load current of the operating MV cables in the real environment at different climatic and ambient environments (cable channels, ladders, soil and pipes) in the cities of Latvia a special MV cable sheath and ambient environment temperature monitoring device is designed. Sheath and ambient environment temperature monitoring of nine 10 kV and 20 kV cables at four ST 110/10-20 kV substations is carried out for a period of one year. By analyzing the acquired temperature monitoring data, dynamics of the cable sheath temperature in dependence of load current, ambient environment and temperature is determined. A mathematical model for maximum achievable MV cable sheath temperature prediction is developed.","PeriodicalId":6470,"journal":{"name":"2016 Electric Power Quality and Supply Reliability (PQ)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2016-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88185994","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

Speed control for a permanent magnet synchronous motor based on fuzzy logic with reduced perturbations on the supply network 基于模糊逻辑的永磁同步电机速度控制与电网微扰减小

2016 Electric Power Quality and Supply Reliability (PQ) Pub Date : 2016-08-01 DOI: 10.1109/PQ.2016.7724114

Emil Lazarescu, F. Frigura-Iliasa, P. Andea, M. Frigura-Iliasa

{"title":"Speed control for a permanent magnet synchronous motor based on fuzzy logic with reduced perturbations on the supply network","authors":"Emil Lazarescu, F. Frigura-Iliasa, P. Andea, M. Frigura-Iliasa","doi":"10.1109/PQ.2016.7724114","DOIUrl":"https://doi.org/10.1109/PQ.2016.7724114","url":null,"abstract":"Fuzzy logic controllers, FLCs, are elements of the artificial intelligence, and, today, they are widely use in command and control of many industrial processes. It involves the acquisition of better signal wave forms at the output and the reduction of all oscillations (in case of electric drives, we consider speed variation, torque variation, current variation for all the three phases ore more) in comparison with the classic control procedures. This paper presents two case studies of two FLCs applied for some exterior permanent magnet synchronous machines, PMSM. One fuzzy logic algorithm has 25 rules and the other has 49 rules. These FLCs are developed for less computational issues, which make them suitable for real time implementation. The permanent magnet synchronous machines are used today in state of the art drives due to their dynamic performances. It is known that PMSM has a high torque density, with reduced losses/torque rates, a high power factor and a quick torque and speed time response. All the references concerning the real time implementation are made on the digital signal processor controller board type DS1104.","PeriodicalId":6470,"journal":{"name":"2016 Electric Power Quality and Supply Reliability (PQ)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2016-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76113770","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

Nordic and baltic wind generation influence to estonian thermal power plants production 北欧和波罗的海风力发电对爱沙尼亚热电厂生产的影响

2016 Electric Power Quality and Supply Reliability (PQ) Pub Date : 2016-08-01 DOI: 10.1109/PQ.2016.7724108

Lauri Ulm, I. Palu

引用次数: 2