Frequency Control of Power System by Output Frequency Band Control of Wind Farm by Variable Speed Wind Generators

2015 ◽  
Vol 135 (6) ◽  
pp. 351-361 ◽  
Author(s):  
Kenta Koiwa ◽  
Hiromi Sato ◽  
Atsushi Umemura ◽  
Rion Takahashi ◽  
Junji Tamura
Keyword(s):  
Power System ◽  
Frequency Band ◽  
Wind Farm ◽  
Frequency Control ◽  
Variable Speed ◽  
Output Frequency ◽  
Wind Generators

scholarly journals Analysis of the Implementation of the Primary and/or Inertial Frequency Control in Variable Speed Wind Turbines in an Isolated Power System with High Renewable Penetration. Case Study: El Hierro Power System

Electronics ◽  
2020 ◽  
Vol 9 (6) ◽  
pp. 901 ◽  
Author(s):  
Guillermo Martínez-Lucas ◽  
José Ignacio Sarasúa ◽  
Juan Ignacio Pérez-Díaz ◽  
Sergio Martínez ◽  
Danny Ochoa
Keyword(s):  
Wind Speed ◽  
Power Systems ◽  
Power System ◽  
Wind Turbines ◽  
Wind Farm ◽  
Frequency Control ◽  
Frequency Regulation ◽  
Variable Speed ◽  
El Hierro

With high levels of wind energy penetration, the frequency response of isolated power systems is more likely to be affected in the event of a sudden frequency disturbance or fluctuating wind conditions. In order to minimize excessive frequency deviations, several techniques and control strategies involving Variable Speed Wind Turbines (VSWTs) have been investigated in isolated power systems. In this paper, the main benefits and disadvantages of introducing VSWTs—both their inertial contribution and primary frequency regulation—in an exclusively renewable isolated power system have been analyzed. Special attention has been paid to the influence of the delays of control signals in the wind farm when VSWTs provide primary regulation as well as to the wind power reserve value which is needed. To achieve this objective, a methodology has been proposed and applied to a case study: El Hierro power system. A mathematical dynamic model of the isolated power system, including exclusively renewable technologies, has been described. Representative generation schedules and wind speed signals have been fixed according to the observed system. Finally, in order to obtain conclusions, realistic system events such as fluctuations in wind speed and the outage of the generation unit with the higher assigned power in the power system have been simulated.

scholarly journals Frequency control of power system including PV and wind farms by using output frequency band control of HVDC interconnection line

2019 ◽  
Vol 2019 (18) ◽  
pp. 4879-4883 ◽  
Author(s):  
Kimiko Tada ◽  
Takamasa Sato ◽  
Atsushi Umemura ◽  
Rion Takahashi ◽  
Junji Tamura ◽  
...  
Keyword(s):  
Power System ◽  
Frequency Band ◽  
Frequency Control ◽  
Wind Farms ◽  
Output Frequency

scholarly journals Analysis And Synthesis Of Model Reference Controller For Variable Speed Wind Generators Inertial Support

2015 ◽  
Vol 66 (1) ◽  
pp. 3-10 ◽  
Author(s):  
Elvisa Bećirović ◽  
Jakub Osmić ◽  
Mirza Kušljugić ◽  
Nedjeljko Perić
Keyword(s):  
Wind Speed ◽  
Power System ◽  
Electrical Power ◽  
Variable Speed ◽  
Electrical Power System ◽  
Model Reference ◽  
Wind Generators ◽  
Analysis And Synthesis ◽  
Reheat Steam ◽  
Inertial Response

Abstract Model Reference Controller (MRC) for contribution of Variable Speed Wind Generators (VSWG) in inertial response of Electrical Power System (EPS) is presented and analyzed in this paper. MRC is synthesized based on a model of Generating Unit With non-Reheat Steam Turbine (GUNRST) thus enabling VSWG to emulate GUNRST response during the initial stage of dynamic frequency response ie inertial phase. Very important property of conventional steam generating units is that its contribution to inertial phase response is independent from the initial generating power. By using MRC in VSWG it is accomplished that in most common wind speed region (3-12 m/s) VSWG inertial support is almost independent from wind speed. Since in most EPSs VSWG replaces conventional steam generators, application of MRC algorithm provides that the characteristics of EPS in terms of inertial response are preserved, regardless of the growing trend of introducing VSWG. Evaluation analysis of the proposed MRC is performed on modified nine bus power system when VSWG with MRC is connected to one of the power system buses.

Study on Loss Reduction of Large Scale Wind Power Concentrated Integration on Power System

2013 ◽  
Vol 380-384 ◽  
pp. 3051-3056 ◽  
Author(s):  
Xiao Dan Wu ◽  
Wen Ying Liu
Keyword(s):  
Power System ◽  
Wind Power ◽  
Power Loss ◽  
Large Scale ◽  
Wind Farm ◽  
Reactive Power ◽  
Low Voltage ◽  
Main Step ◽  
Loss Reduction ◽  
Wind Generators

In this paper, starting from the active network loss formulas and wind characteristics, it is pointed out the reactive power loss and reactive flow is the major impact of wind power integration on power system loss. The reactive power loss formulas of box-type transformer, main step-up transformer, wind farm collector line and connecting grid line are analyzed. Next the reactive power loss of transformer and transmission line is described in detail. Then put forward the loss reduction measures that installing SVC on the low voltage side of the main step-up transformer and making the doubly-fed wind generators send out some reactive power at an allowed power factor. Use the case of Gansu Qiaodong wind farm to verify the effectiveness of the proposed measures.

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