2012 3rd IEEE International Symposium on Power Electronics for Distributed Generation Systems (PEDG)最新文献_第9页

Assessing the power quality behaviour of high photovoltaic (PV) penetration levels inside the distribution network 评估配电网内高光伏(PV)渗透水平的电能质量行为

2012 3rd IEEE International Symposium on Power Electronics for Distributed Generation Systems (PEDG) Pub Date : 2012-06-25 DOI: 10.1109/PEDG.2012.6254080

M. Patsalides, G. Georghiou, A. Stavrou, V. Efthimiou

{"title":"Assessing the power quality behaviour of high photovoltaic (PV) penetration levels inside the distribution network","authors":"M. Patsalides, G. Georghiou, A. Stavrou, V. Efthimiou","doi":"10.1109/PEDG.2012.6254080","DOIUrl":"https://doi.org/10.1109/PEDG.2012.6254080","url":null,"abstract":"In recent years, increasing concerns about climate change and the liberalisation of energy market have provided the necessary impetus for a revolutionary restructuring of the electricity network at every level, namely production, transmission and distribution. Increased electricity production from renewable energy sources (RES) coupled with energy efficiency lie at the heart of the ambitious targets set by Europe in the quest to curb greenhouse gas emissions and to reach energy sustainability. Therefore the security and stability of the power system should be considered carefully to identify possible impacts due to uncontrolled deployment of RES. This paper focuses on the study of varying concentrations of photovoltaic (PV) systems on a proposed electricity grid in an attempt to assess the power quality response of the power system. The study has been performed using a detailed PV system model. The model is initially validated using data from the output of PV systems and then this is used for the study of varying PV penetrations on common distribution system topologies. The results are compared to international power quality standards.","PeriodicalId":146438,"journal":{"name":"2012 3rd IEEE International Symposium on Power Electronics for Distributed Generation Systems (PEDG)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2012-06-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131000129","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

Digital implementation of one cycle control in back to back converters 背靠背变换器单周期控制的数字实现

2012 3rd IEEE International Symposium on Power Electronics for Distributed Generation Systems (PEDG) Pub Date : 2012-06-25 DOI: 10.1109/PEDG.2012.6254024

G. Petrone, M. Vitelli, G. Spagnuolo

引用次数: 2

Impact of distributed generation penetration on grid current harmonics considering non-linear loads 考虑非线性负荷的分布式电源穿深对电网电流谐波的影响

2012 3rd IEEE International Symposium on Power Electronics for Distributed Generation Systems (PEDG) Pub Date : 2012-06-25 DOI: 10.1109/PEDG.2012.6254065

V. Khadkikar, R. Varma, R. Seethapathy, Ambrish Chandra, Hatem H. Zeineldin

{"title":"Impact of distributed generation penetration on grid current harmonics considering non-linear loads","authors":"V. Khadkikar, R. Varma, R. Seethapathy, Ambrish Chandra, Hatem H. Zeineldin","doi":"10.1109/PEDG.2012.6254065","DOIUrl":"https://doi.org/10.1109/PEDG.2012.6254065","url":null,"abstract":"In this paper, the impact of large-scale penetration of distributed generation (DG) system in the presence of non-linear loads is addressed. The effect of different DG penetration levels on the grid side current harmonics is examined. It is found that current harmonics generated by downstream non-linear loads with a TDD (total demand distortion) that is compliant with IEEE Standards can lead to significantly high THD (total harmonic distortion) values at the grid side under certain loading scenarios. These low magnitude highly distorted currents may cause protection circuitry and grid-synchronizing circuitry malfunctioning, and may even cause a resonance condition with power factor correction capacitor on the network. This paper further presents a control application of Photovoltaic (PV) solar plant based DG inverter o mitigate the above harmonics problem. The increased harmonic level issue and the application of PV solar plant to mitigate such problem have been demonstrated both by MATLAB/ SIMULINK simulation studies and laboratory experimental results.","PeriodicalId":146438,"journal":{"name":"2012 3rd IEEE International Symposium on Power Electronics for Distributed Generation Systems (PEDG)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2012-06-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121192335","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: 35

Accurate estimation of grid voltage parameters using singular value decomposition technique 利用奇异值分解技术对电网电压参数进行精确估计

2012 3rd IEEE International Symposium on Power Electronics for Distributed Generation Systems (PEDG) Pub Date : 2012-06-25 DOI: 10.1109/PEDG.2012.6254092

M. S. Reza, M. Ciobotaru, V. Agelidis

{"title":"Accurate estimation of grid voltage parameters using singular value decomposition technique","authors":"M. S. Reza, M. Ciobotaru, V. Agelidis","doi":"10.1109/PEDG.2012.6254092","DOIUrl":"https://doi.org/10.1109/PEDG.2012.6254092","url":null,"abstract":"This paper presents the comparison of results between the singular value decomposition (SVD) and the least square (LS) techniques and also proposes the application of the SVD technique for extracting the parameters of the grid voltage waveform. With a small size window, the proposed SVD technique can extract amplitudes and phase angles of all the frequency components present in the Prony modelled grid voltage waveform more accurately than the LS technique. Moreover, the proposed technique has the ability to estimate the grid voltage parameters accurately from the singular matrix, where the LS technique fails. The SVD technique is applied on the Vandermonde matrix formed by the known damping factors and frequencies of the Prony modelled grid voltage waveform in order to estimate the amplitudes and phase angles. Moreover, an algorithm, which avoids the rooting of higher order polynomial, is presented to estimate the unknown harmonic frequencies from the harmonically distorted grid voltage waveform, where the fundamental frequency is estimated from a predicted fundamental frequency variation zone. Synthetically generated grid voltage waveforms are used in MATLAB to depict the superior performance of the proposed SVD technique over the LS technique.","PeriodicalId":146438,"journal":{"name":"2012 3rd IEEE International Symposium on Power Electronics for Distributed Generation Systems (PEDG)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2012-06-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115858624","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: 6

A new MPPT method for PV array system under partially shaded conditions 部分遮阳条件下光伏阵列系统的一种新的MPPT方法

2012 3rd IEEE International Symposium on Power Electronics for Distributed Generation Systems (PEDG) Pub Date : 2012-06-25 DOI: 10.1109/PEDG.2012.6254039

K. S. Parlak, H. Can

引用次数: 21

Numerical study of transient stability criteria for an inverter-based distributed generator 基于逆变器的分布式发电机暂态稳定准则的数值研究

2012 3rd IEEE International Symposium on Power Electronics for Distributed Generation Systems (PEDG) Pub Date : 2012-06-25 DOI: 10.1109/PEDG.2012.6254102

Y. Omagari, T. Funaki

引用次数: 6

Harmonic impacts of inverter-based distributed generations in low voltage distribution network 基于逆变器的分布式电源对低压配电网的谐波影响

2012 3rd IEEE International Symposium on Power Electronics for Distributed Generation Systems (PEDG) Pub Date : 2012-06-25 DOI: 10.1109/PEDG.2012.6254066

X. Zhou, Jiangang Liang, Wenshan Zhou, Xinmin Jin, Yibin Tong, R. Cai

引用次数: 6

All-electric wave energy converter connected in array with common DC-link for improved power quality 全电波能转换器与普通直流链路阵列连接，以提高电能质量

2012 3rd IEEE International Symposium on Power Electronics for Distributed Generation Systems (PEDG) Pub Date : 2012-06-25 DOI: 10.1109/PEDG.2012.6254038

J. Sjolte, G. Tjensvoll, M. Molinas

引用次数: 8

A new control strategy for megawatt scale multilevel photovoltaic inverters under partial shading 部分遮阳条件下兆瓦级多电平光伏逆变器控制新策略

2012 3rd IEEE International Symposium on Power Electronics for Distributed Generation Systems (PEDG) Pub Date : 2012-06-25 DOI: 10.1109/PEDG.2012.6254023

S. Essakiappan, H. Krishnamoorthy, P. Enjeti, R. Balog, S. Ahmed

{"title":"A new control strategy for megawatt scale multilevel photovoltaic inverters under partial shading","authors":"S. Essakiappan, H. Krishnamoorthy, P. Enjeti, R. Balog, S. Ahmed","doi":"10.1109/PEDG.2012.6254023","DOIUrl":"https://doi.org/10.1109/PEDG.2012.6254023","url":null,"abstract":"In this paper, a new control strategy for megawatt scale multilevel photovoltaic (PV) inverters under partial shading is proposed. In the proposed system, the photovoltaic arrays are divided into zones and each zone is connected to DC to AC inverter. The DC to AC inverters of multiple zones are connected in series to form the required medium voltage and transfer power to the grid. In such a system where all zones are uniformly illuminated, the output voltage vectors of all the inverters are of equal magnitude and in phase with each other. However, under partial shading, the output voltage magnitude and phase angles of individual DC to AC inverters need to be adjusted in such a way that the available real power is transferred to the grid and the power factor of the overall system is as close to unity as possible. A control strategy is developed to operate the series connected multilevel inverter configuration under partial shading, by continuously monitoring the real and reactive powers supplied by each inverter. The developed strategy does not require a central controller and/or communications between the various DC to AC inverter blocks. The proposed control strategy is simulated for a 6.6 kV, three phase utility scale PV system rated at 5 MW.","PeriodicalId":146438,"journal":{"name":"2012 3rd IEEE International Symposium on Power Electronics for Distributed Generation Systems (PEDG)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2012-06-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127344228","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: 9

A composite passive damping method of the LLCL-filter based grid-tied inverter 基于llcl滤波器的并网逆变器复合无源阻尼方法

2012 3rd IEEE International Symposium on Power Electronics for Distributed Generation Systems (PEDG) Pub Date : 2012-06-25 DOI: 10.1109/PEDG.2012.6254087

Weimin Wu, Min Huang, Yunjie Sun, Xiongfei Wang, F. Blaabjerg

{"title":"A composite passive damping method of the LLCL-filter based grid-tied inverter","authors":"Weimin Wu, Min Huang, Yunjie Sun, Xiongfei Wang, F. Blaabjerg","doi":"10.1109/PEDG.2012.6254087","DOIUrl":"https://doi.org/10.1109/PEDG.2012.6254087","url":null,"abstract":"This paper investigates the maximum and the minimum gain of the proportional resonant based grid current controller for a grid-tied inverter with a passive damped high-order power filter. It is found that the choice of the controller gain is limited to the local maximum amplitude determined by Q-factor around the characteristic frequency of the filter and grid impedance. To obtain the Q-factor of a high-order system, an equivalent circuit analysis method is proposed and illustrated through several classical passive damped LCL- and LLCL-filters. It is shown that both the RC parallel damper that is in parallel with the capacitor of the LCL-filter or with the Lf-Cf resonant circuit of the LLCL-filter, and the RL series damper in series with the grid-side inductor have their own application limits. Thus, a composite passive damped LLCL-filter for the grid-tied inverter is proposed, which can effectively suppress the possible resonance in case that the grid impedance varies in a wide range. Simulation results are good agreement with the theoretical analysis.","PeriodicalId":146438,"journal":{"name":"2012 3rd IEEE International Symposium on Power Electronics for Distributed Generation Systems (PEDG)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2012-06-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128595989","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: 26