Description: 介绍了交流励磁变速恒频双馈风力发电机组的工作原理,从双馈发电机的数学模型出发,采用矢量控制技术,在
Matlab /Simulink环境下建立了系统模型,进行了发电机有功无功独立调节的仿真研究。研究结果表明变速恒频双馈风力发电
机组具有良好的动态特性,并为风力发电系统的进一步应用研究提供了可靠的理论依据.-Introduced the AC-excited doubly-fed VSCF wind turbine working principle, from the doubly-fed generator mathematical model, the use of vector control technology, in the Matlab/Simulink environment to establish a system model for the generator active and reactive power independently Simulation of regulation. The results show that the doubly-fed VSCF wind turbine has a good dynamic characteristics and wind power generation system for further applied research to provide a reliable theoretical basis. Platform: |
Size: 502784 |
Author:朱珠 |
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Description: 为满足在电网发生故障时风电机组需保持与电网连接并向系统不间断供电的要求,提出
了双馈风力发电机的动态模型、变流器模型、变流器保护及电网模型,以研究双馈风力发电机的暂
态特性.以1·5MW SUT-1500双馈风力发电机为原型,由一个无穷大电源等效电网模型,变流器模
型采用定子磁链的定向电流矢量控制方法,利用PSCAD软件对双馈电机的暂态特性进行仿真.仿
真结果表明,矢量控制能够实现双馈电机的有功、无功解耦,并可改善系统的低压穿越能力.
-To meet the power failure to keep their wind turbine grid-connected uninterruptible power supply to the system requirements, proposed doubly-fed wind turbine dynamic models of converter model, inverter protection and network model to Study of double-fed wind generator transient characteristics. to 1.5 MW SUT-1500 double-fed wind turbine prototypes, by an infinite power grid equivalent model of converter model uses the stator flux orientation of current vector control methods, using PSCAD software to double-fed motor simulation of transient characteristics. The simulation results show that vector control can be achieved double-fed motor active and reactive decoupling, and can improve the system through the capacity of low-voltage. Platform: |
Size: 619520 |
Author:mengxianghua |
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Description: Abstract— This paper introduces an advanced monitoring and diagnosis system for the detection of incipient electrical faults in
doubly fed induction generators used in wind turbines. In this application, the rotor is supplied by a static converter for the control of active and reactive power flows from the generator to the electrical grid. A new diagnostic method based on the frequency analysis of the rotor modulating signals is proposed.Simulation and experimental results confirm that a convenient frequency analysis of these signals and a simple interpretation lead to an effective diagnostic procedure.The proposed system is suitable to be easily embedded in the power-converter digital control system at very low cost. Platform: |
Size: 1705984 |
Author:lakhdar |
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Description: The paper gives an overview regarding power
electronics control of wind energy. The development of
modern power electronics has been briefly reviewed.
The applications of power electronics including control
in various kinds of wind turbine generation systems and
offshore wind farms are also illustrated, showing that
the wind turbine behavior/performance is significantly
improved by using power electronics. They are able to
act as a contributor to the frequency and voltage control
by means of active and reactive power control.
Finally, a status of the wind turbine market is given
and some future trends are highlighted. Wind energy
will be an important power sources in the future power
system.
Platform: |
Size: 1431552 |
Author:dida |
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Description: 含DG的配网无功优化计算研究，包括风力发电和光伏电池微型燃气轮机和燃料电池-Distribution network with DG' s reactive power optimization studies, including micro-wind turbines and photovoltaic cells and fuel cells Platform: |
Size: 9216 |
Author:吕清洁 |
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Description: 改进基本DE算法 电力系统无功优化 风电场 ，对比例因子和缩放因子进行改进，重叠改进，应用与含风电场无功优化。-Improvement of basic DE algorithm to optimize reactive power wind farm, the scale factor and scaling factor to improve, overlapping improvements, applications, and with the wind farm reactive power optimization. Platform: |
Size: 607232 |
Author:Max |
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Description: This paper presents three strategies for reactive power control in wind farms with STATCOM. First, the
STATCOM system and its applications in electric power systems and wind farms are shown. Second, the modeling done of the
wind farm, the STATCOM and the network are presented. Finally, control strategies for reactive power delivered by the park
to the network when required are shown. The result of the implementation of each control strategy is shown by simulation. Platform: |
Size: 776192 |
Author:alok |
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Description: Injection of the wind power into an electric grid
affects the power quality. The performance of the wind turbine
and thereby power quality are determined on the basis of measurements
and the norms followed according to the guideline
specified in International Electro-technical Commission standard,
IEC-61400. The influence of the wind turbine in the grid
system concerning the power quality measurements are-the active
power, reactive power, variation of voltage, flicker, harmonics,
and electrical behavior of switching operation and these are
measured according to national/international guidelines. Platform: |
Size: 589824 |
Author:mahesh |
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Description: On the Causes of Circulating Currents in PWM
Drives With Open-End Winding AC Machines
Phase-Shifting-Transformer-Fed Multimodular
Matrix Converter Operated by a
New Modulation Strategy
An All-DC Offshore Wind Farm With
Series-Connected Turbines: An Alternative to the
Classical Parallel AC Model?
Reactive Power Control of Permanent-Magnet
Synchronous Wind Generator With Matrix Converter Platform: |
Size: 7259136 |
Author:sina |
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Description: 基于矢量解耦控制策略，建立了适用于电力系统暂态
稳定分析的直驱式风力发电机组机电暂态模型。为模型做了
2点合理假设：有功功率和无功功率在暂态过程中完全解耦；
测量的电气量准确，和实际的电气量完全相等。基于这些条
件，从实际的物理装置出发，对直驱式风电机组的电磁暂态
模型进行简化。考虑了变频器直流电压的动态过程和低电压
穿越的运行特性。仿真结果表明，该模型和电磁暂态模型动
态响应曲线一致，结果准确、可靠，可以用于分析大规模直
驱式风电场接入对电力系统安全稳定性的影响-Based on vector decoupling control strategy is suitable for power system transient is established
Stability analysis of direct drive wind turbine electromechanical transient model. For the model to do
2 some reasonable assumption: active power and reactive power in the transient process of the decoupling completely
The accurate measurement of electric parameters, and fully equal to the actual electric parameters. On the basis of these article
, starting from the actual physical device, electromagnetic transient of direct drive wind turbines
To simplify the model. Considering the dynamic process of dc voltage and the frequency converter low voltage
Through the operation of the features. The simulation results show that the model and the electromagnetic transient model
Transient response curve is consistent, accurate, reliable and can be used for analysis of large-scale straight
The displacement type wind farm access impact on the stability of power system security
Platform: |
Size: 969728 |
Author:孟侠 |
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Description: 介绍了有关并网风电场无功控制与电压稳定研究-Introduced the related grid-connected wind farm reactive power control and voltage stability research Platform: |
Size: 704512 |
Author:理直气壮 |
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Description: 详细介绍了计及无功裕度的双馈风电场无功电压协调控制-Details of the coordination and control of reactive voltage and reactive power meter margin doubly-fed wind farm Platform: |
Size: 705536 |
Author:理直气壮 |
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Description: This paper describes the modelling and control system of a direct-drive PMSG wind turbine for effective
active and reactive power generation control and voltage control at the grid connection point. Platform: |
Size: 915456 |
Author:monir10
|
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