7th Iran Wind Energy Conference (IWEC2021)最新文献_第4页

Fault Location Identification in Meshed AC Microgrids Using Interharmonic Injection 基于间谐波注入的网状交流微电网故障定位识别

7th Iran Wind Energy Conference (IWEC2021) Pub Date : 2021-05-17 DOI: 10.1109/IWEC52400.2021.9467007

Alireza Forouzesh, M. Golsorkhi, M. Savaghebi, M. Baharizadeh

{"title":"Fault Location Identification in Meshed AC Microgrids Using Interharmonic Injection","authors":"Alireza Forouzesh, M. Golsorkhi, M. Savaghebi, M. Baharizadeh","doi":"10.1109/IWEC52400.2021.9467007","DOIUrl":"https://doi.org/10.1109/IWEC52400.2021.9467007","url":null,"abstract":"This paper presents a support vector machine (SVM)-based fault detection algorithm for islanded meshed microgrids (MGs). Considering the low level of fault current in islanded MGs, the fault detection is carried out based on the magnitude of the voltage rather than the current. Accordingly, the rms voltages of the DERs are assigned as the feature vector for fault detection SVM. Upon the occurrence of a fault, the fault location is identified by means of an interharmonic injection scheme. To identify the faulty zone, the DER which is electrically closest to the fault injects interharmonic currents into the grid and the zone with highest current is considered as the faulty zone. Then, a second DER located in the same zone inject interharmonic currents at different frequencies. The resulting interharmonic voltages are measured by each DER to form a feature vector. A multi class SVM uses this feature vector to identify the faulty line within that zone. The proposed algorithm is tested on a nine bus meshed MG. Test results show that the proposed method is capable of accurate detection of fault location even with high fault impedances.","PeriodicalId":281528,"journal":{"name":"7th Iran Wind Energy Conference (IWEC2021)","volume":"122 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-05-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114332887","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

A Numerical Study of INVELOX Wind Turbine Considering the Inlet Shape Design 考虑进气道形状设计的INVELOX风力机数值研究

7th Iran Wind Energy Conference (IWEC2021) Pub Date : 2021-05-17 DOI: 10.1109/IWEC52400.2021.9466962

Seyednavid Shayestehnezhad, Soroush Kargar, A. L. Nichkoohi

引用次数: 0

Transient Analysis of LCC based HVDC Offshore Wind Farms using DIgSILENT PowerFactory 基于DIgSILENT PowerFactory的LCC型高压直流海上风电场暂态分析

7th Iran Wind Energy Conference (IWEC2021) Pub Date : 2021-05-17 DOI: 10.1109/IWEC52400.2021.9467031

R. Hiremath, T. Moger

引用次数: 2

Imbalance Power Sharing Improvement in Autonomous Microgrids Consisting of Grid-Feeding and Grid-Supporting Inverters 由馈网逆变器和并网逆变器组成的自治微电网的不平衡电力共享改进

7th Iran Wind Energy Conference (IWEC2021) Pub Date : 2021-05-17 DOI: 10.1109/IWEC52400.2021.9466976

M. Karimi, S. A. Taher, Z. D. Arani, J. Guerrero

{"title":"Imbalance Power Sharing Improvement in Autonomous Microgrids Consisting of Grid-Feeding and Grid-Supporting Inverters","authors":"M. Karimi, S. A. Taher, Z. D. Arani, J. Guerrero","doi":"10.1109/IWEC52400.2021.9466976","DOIUrl":"https://doi.org/10.1109/IWEC52400.2021.9466976","url":null,"abstract":"Imbalance power sharing problem in autonomous AC microgrids (MGs) is usually addressed by inverter-interfaced distributed generation units (IIDGs) with reliable DC power supply operating in voltage control mode (VCM); while IIDGs with unpredictable DC source (i.e. solar, wind, etc.) are rarely considered as a potential origin of contribution. This paper introduces an imbalance power sharing role for such units considering that they are usually generating intermittent, unreliable, and erratic power. To cope with the problem, negative virtual impedance and voltage unbalanced factor (VUF) concepts are used and applied to an autonomous inverter- interfaced MG, including two grid-supporting battery energy storage systems (BESSs) and a grid-feeding photovoltaic (PV) system. Specifically, a proportion of negative-sequence output current is added to the control structure of grid-feeding PV system which is obtained from the product of output current and VUF transformed into the synchronous reference frame with negative fundamental frequency. This strategy enables us to use the remaining capacity of a PV system for imbalance power compensation. Moreover, proper reactive power sharing between grid-supporting BESSs is achieved using virtual impedance strategy. Simulation studies conducted in MATLAB/SIMULINK software verify the excellent performance of the proposed approach in improving imbalance power sharing amongst IIDGs. Furthermore, the VUF values at IIDG outputs are kept less than the maximum allowable amount of 3%.","PeriodicalId":281528,"journal":{"name":"7th Iran Wind Energy Conference (IWEC2021)","volume":"16 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-05-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127743591","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

An Efficient Trombe Wall with Building Integrated Wind Turbine 建筑集成风力涡轮机的高效trobe墙

7th Iran Wind Energy Conference (IWEC2021) Pub Date : 2021-05-17 DOI: 10.1109/IWEC52400.2021.9466994

S. Y. Kandemir, E. Açıkkalp

引用次数: 0

Analysis of Wind Generator Contribution on load Frequency Control Considering Control Signals Delays 考虑控制信号时滞的风力发电机对负荷频率控制的贡献分析

7th Iran Wind Energy Conference (IWEC2021) Pub Date : 2021-05-17 DOI: 10.1109/IWEC52400.2021.9466980

S. K. Haghighian, H. Yeh, Tohid Rahimi

{"title":"Analysis of Wind Generator Contribution on load Frequency Control Considering Control Signals Delays","authors":"S. K. Haghighian, H. Yeh, Tohid Rahimi","doi":"10.1109/IWEC52400.2021.9466980","DOIUrl":"https://doi.org/10.1109/IWEC52400.2021.9466980","url":null,"abstract":"Among the renewable sources, wind turbines can store considerable kinetic energy in their mechanical structure. As the penetration of these turbines increases in modern grids, the stored kinetic energy will be significant. When frequency drops due to different disturbances, these wind turbine units can also discharge some amount of their kinetic energy to grid to improve the frequency profile. Wind turbine generators can be operated at a deloading power point with a reduced power level instead of maximum power point. Deloading operation provide a reserve power capacity for wind generator. Thus, the wind generators can have contribution in frequency control when an active power mismatch between generation and demand appear. In this case, some percentage of the maximum capturable power is prevented from being injected to the grid. In fact, the part of the available energy of the wind turbine is blocked which increases the speed of the turbine shaft. In this situation, to optimize the frequency of the grid, the control coefficients of this wind turbine should be adjusted in such a way that the operation of the turbine would be coordinated with the other power sources. To improve the frequency oscillation this paper has employed a method to optimize the controller parameters of power sources using Teaching–Learning-Based Optimization (TLBO) algorithm. The frequency of the case study with and without contribution of the wind unit in frequency regulating condition is tested using MATLAB/Simulink.","PeriodicalId":281528,"journal":{"name":"7th Iran Wind Energy Conference (IWEC2021)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-05-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130989879","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

DC Microgrid Voltage Stability through Inertia Enhancement Using a Bidirectional DC-DC Converter 利用双向DC-DC变换器惯性增强直流微电网电压稳定性

7th Iran Wind Energy Conference (IWEC2021) Pub Date : 2021-05-17 DOI: 10.1109/IWEC52400.2021.9467032

Shokoofeh Bagheri, H. M. Cheshmehbeigi

引用次数: 7

Comparison of Monte Carlo Simulation and Genetic Algorithm in Optimal Wind Farm Layout Design in Manjil Site Based on Jensen Model 基于Jensen模型的蒙特卡罗模拟与遗传算法在满吉尔风电场布局优化设计中的比较

7th Iran Wind Energy Conference (IWEC2021) Pub Date : 2021-05-17 DOI: 10.1109/IWEC52400.2021.9466981

M. Javadi, Hossein Ghomashi, M. Taherinezhad, Mahtab Nazarahari, R. Ghasemiasl

引用次数: 2

Investigating the Impact of Wind Farms Energy Yields on Reduction of Power Plants Natural Gas Consumptions and CO2 Emissions: A Practical Case Study in Iran 调查风力发电场发电量对减少发电厂天然气消耗和二氧化碳排放的影响:伊朗的实际案例研究

7th Iran Wind Energy Conference (IWEC2021) Pub Date : 2021-05-17 DOI: 10.1109/IWEC52400.2021.9466982

M. Khatibi

{"title":"Investigating the Impact of Wind Farms Energy Yields on Reduction of Power Plants Natural Gas Consumptions and CO2 Emissions: A Practical Case Study in Iran","authors":"M. Khatibi","doi":"10.1109/IWEC52400.2021.9466982","DOIUrl":"https://doi.org/10.1109/IWEC52400.2021.9466982","url":null,"abstract":"The use of renewable-based resources, such as wind energy, for generating electrical energy has been growing in recent years due to several reasons including free and infinite resources as well as their considerable impact on the reduction of fossil fuels consumptions and CO2 emissions. It is the purpose of this paper to investigate the effect of grid-connected large-scale wind farms in a region in Iran, on the reduction of natural gas consumptions in heat-cycle power plants and their related CO2 emissions as a practical case study. The wind farms under study comprise about 51% of the total grid connected capacity of wind generation in Iran. First, the total energy yielded by the considered wind farms are extracted for a two-year period from April 2019 to March 2021 based on a detailed practical data and then, the impact of this renewable-based energy generation is studied on the reduction of natural gas consumption in a real gas-cycle power plant due to its practical fuel intake data. The financial revenue of savings in the natural gas intake is also estimated based on the two-year average international price of natural gas. Finally, the reduction of CO2 emission is calculated as the result of reduction in the natural gas consumption of the considered gas-cycle power plant. The results of this practical case study well demonstrate the effective role of wind farms energy generation on the reduction of fossil fuels consumption in heat-cycle power plants and thus, the significant reduction of CO2 emissions as one of the most crucial aspects of decarbonization plans.","PeriodicalId":281528,"journal":{"name":"7th Iran Wind Energy Conference (IWEC2021)","volume":"133 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-05-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126289604","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

Impacts of Contributing Distribution Network Operator (DNO) and Distributed Generation Unit Operator (DGO) in Benefit Maximizing 贡献配电网运营商(DNO)和分布式发电机组运营商(DGO)在效益最大化中的影响

7th Iran Wind Energy Conference (IWEC2021) Pub Date : 2021-05-17 DOI: 10.1109/IWEC52400.2021.9466991

Rana Rostami, H. Hosseinnia

引用次数: 1