Simulation Research on Improving Low Voltage Ride through of a Wind Farm by SVC

2013 ◽  
Vol 339 ◽  
pp. 608-613 ◽  
Author(s):  
Yan Shi ◽  
Chun Xu Zhang ◽  
Guang Lei Li ◽  
Yan Cheng ◽  
Shu Min Sun
Keyword(s):  
Large Scale ◽  
Wind Farm ◽  
Fault Location ◽  
Reactive Power ◽  
Low Voltage ◽  
Negative Impact ◽  
Simulation Models ◽  
Simulation Research ◽  
Low Voltage Ride Through ◽  
The Stability

Large-scale wind farm connecting to the grid will affect the stability of the grid, therefore dynamic reactive power compensation devices need to be installed at the wind farm in order to reduce the negative impact after connecting to the grid, andimprove the low voltageridethrough capability of the grid system wind turbine. Simulation models of a wind farm and SVCare built in PSCAD. In different fault location, simulations are carried out respectively to analyze the effect of SVC on LVRT. The results show that SVC can effectively improve the LVRT capability.

Impact of static synchronous compensator on the stability of a wind farm: Case study of wind farm in Tunisia

2016 ◽  
Vol 40 (6) ◽  
pp. 555-568 ◽  
Author(s):  
Ridha Karoui ◽  
Abdelkarim Aouiti ◽  
Maha Zoghlami ◽  
Faouzi Bacha
Keyword(s):  
Wind Turbines ◽  
Wind Farm ◽  
Reactive Power ◽  
Low Voltage ◽  
Voltage Drop ◽  
Energy System ◽  
Static Synchronous Compensator ◽  
Low Voltage Ride Through ◽  
Technical Requirements ◽  
The Stability

The static synchronous compensator is one of the FACTS (Flexible Alternating Current Transmission System) device capable of maintaining the stability of wind turbines during a sudden default. Among these faults, the voltage drops at the connection bus wind turbines. For this fault case, the static synchronous compensator intervenes by injection of the reactive power to compensate the voltage drop. In this article, as application case, we study the wind farm of Bizerte (north of Tunisia). This farm is composed of fixed speed aero-generators using squirrel cage induction generators. Our study begins with modeling the wind system. Next, we describe the technical requirements for connection of a wind energy system to the grid and outfit at the voltage dips (low-voltage ride through) according to STEG (Tunisian Company of Electricity and Gas). We also present the structure of static synchronous compensator. Finally, we present the simulation results of the wind farm under low-voltage ride through with and without static synchronous compensator.

Summary and Analysis on the Low Voltage Ride through Reformation of the Wind Power Turbine

2012 ◽  
Vol 608-609 ◽  
pp. 781-784
Author(s):  
Gui Xin Hou ◽  
Qi Hui Liu ◽  
Fang Yu ◽  
Ying Li
Keyword(s):  
Power System ◽  
Wind Power ◽  
Large Scale ◽  
Wind Farm ◽  
Low Voltage ◽  
Low Voltage Ride Through ◽  
Power Turbine ◽  
Wind Power System ◽  
The Stability ◽  
Power Capability

As the increasing of the wind power capability， in order to ensure the stability of the grid while the voltage dips， the LVRT ability of the wind power turbine has become necessary. Realizing LVRT， is not only the question the built and will build wind power system are facing, but also the challenge of the will build and operating ones. Actually, many connected operating wind power system can’t meet the LVRT, this is why the large scale wind power off-grid events happened frequently, so the reformation of the wind power system LVRT is an emergency question to be solved. This paper introduced the main methods for LVRT reformation, based on this, some LVRT reform equipment was summarized for the wind turbine; and further, some reform methods were introduced for wind farm.

Comparative Study on Low Voltage Ride-Through Test Methods for Grid-Connected Photovoltaic Inverter

2014 ◽  
Vol 590 ◽  
pp. 495-499
Author(s):  
Wen Jin Wu ◽  
Jian Hui Su ◽  
Hai Ning Wang
Keyword(s):  
Large Scale ◽  
Low Voltage ◽  
Voltage Drop ◽  
Power Grid ◽  
Design For Test ◽  
Grid Voltage ◽  
Low Voltage Ride Through ◽  
Technical Requirements ◽  
Test Platform ◽  
The Stability

The large scale photovoltaic plants have more effects on the stability of regional power grid with the rapid increase of photovoltaic generation ratio in some areas. According to the grid guideline, the photovoltaic inverter is required to maintain the running status even the grid voltage drops and needs to have the capability to contribute towards the stability of power grid voltage and to support the grid voltage ride through. To test the ability of photovoltaic inverter low voltage ride through (LVRT), the test platform to simulate all kinds of fault for voltage drop needs to be set up. By the low voltage through technical requirements, this paper puts forward three kinds of design for test platform and analyzes respective work principle and characteristics, in order to provide optimization solution for the low voltage ride through test work.

Using Dynamic Reactive Power Compensation Equipments to Enhance Low Voltage Ride-Through Capability of Fixed Speed Asynchronous Wind Farms

2013 ◽  
Vol 291-294 ◽  
pp. 481-489 ◽  
Author(s):  
Yu Lin Hu ◽  
Lei Shi ◽  
Hao Ming Liu
Keyword(s):  
Wind Farm ◽  
Reactive Power ◽  
Low Voltage ◽  
Wind Farms ◽  
Reactive Power Compensation ◽  
Mass Model ◽  
Static Synchronous Compensator ◽  
Conversion Model ◽  
Low Voltage Ride Through ◽  
Wind Generators

This paper presents wind energy conversion model, drive shaft’s dual-mass model and generator’s transient mathematical model for the transient analysis of fixed speed asynchronous wind generators, and analyzes the transient characteristics of the wind generators under the condition of low voltage fault. The control principles of two dynamic reactive power compensation equipments as static var compensator (SVC) and static synchronous compensator (STATCOM) are introduced. Take a wind farm consists of fixed speed asynchronous wind generators as an example, the two compensation equipments are simulated in PowerFactory/DIgSILENT to compare the effort of them on enhancing the low voltage ride-through capability of the wind farm.

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.

Study of Reactive Power Compensation for Improvement of Low-Voltage-Ride-Through Capability of Wind Farm

2013 ◽  
Vol 724-725 ◽  
pp. 619-622 ◽  
Author(s):  
Chia Yu Hsu ◽  
Ta Hsiu Tseng ◽  
Pei Hwa Huang
Keyword(s):  
Wind Farm ◽  
Reactive Power ◽  
Low Voltage ◽  
Wind Farms ◽  
Static Synchronous Compensator ◽  
Low Voltage Ride Through ◽  
Induction Generators ◽  
Turbine Generators ◽  
Set Up ◽  
Doubly Fed

The main purpose of this paper is to study the enhancement of the Low-Voltage-Ride-Through (LVRT) capability of the wind farm with the installment of the Static Synchronous Compensator (STATCOM) and the Static Var Compensator (SVC). With more penetration of wind energy from on-shore and off-shore wind farms, utilities have been starting to set up the regulation requiring the wind turbine generators to remain connected to the grid when a fault takes place in the system which is referred to as Low-Voltage-Ride-Through (LVRT). A wind farm composed with doubly fed induction generators is used as the study system. Both the STATCOM and the SVC are utilized as the devices for enhancing the LVRT capability of the wind farm. The results are demonstrated for comparing the performance of the two devices in the improvement of voltage dynamic characteristics of the study system.

scholarly journals Improved Low Voltage Ride Through Capability of Wind Farm using STATCOM

2021 ◽  
Author(s):  
Miad Mohaghegh Montazeri
Keyword(s):  
Wind Turbine ◽  
Wind Farm ◽  
Reactive Power ◽  
Low Voltage ◽  
Steady State Condition ◽  
Low Voltage Ride Through ◽  
Induction Generators ◽  
Turbine Generators ◽  
Wind Turbine Generators ◽  
Doubly Fed

Using power electronic converters with reduced capacity in doubly-fed induction generator (DFIG) based wind turbines make them vulnerable to over-current during grid disturbances. This thesis aims to analyze the behaviour of doubly-fed induction generators based wind farm for various timing schemes of crowbar deactivation and resumption of rotor side converter (RSC) in the case of grid fault. Also, usage of a static synchronous compensator (STATCOM) for the purpose of stabilizing the grid voltage after a three-phase fault is studied in this these. Moreover, finding minimum capacity of STATCOM which ensures low-voltage ride through (LVRT) of wind farm is studied. Finally, coordination of reactive power from wind turbine generators and STATCOM in steady-state condition is performed. All the results in this thesis show that STATCOM improves low voltage ride through (LVRT) capability of wind farm and assists for an uninterrupted operation of wind turbine generators during grid faults.

scholarly journals Improved Low Voltage Ride Through Capability of Wind Farm using STATCOM

2021 ◽  
Author(s):  
Miad Mohaghegh Montazeri
Keyword(s):  
Wind Turbine ◽  
Wind Farm ◽  
Reactive Power ◽  
Low Voltage ◽  
Steady State Condition ◽  
Low Voltage Ride Through ◽  
Induction Generators ◽  
Turbine Generators ◽  
Wind Turbine Generators ◽  
Doubly Fed

Using power electronic converters with reduced capacity in doubly-fed induction generator (DFIG) based wind turbines make them vulnerable to over-current during grid disturbances. This thesis aims to analyze the behaviour of doubly-fed induction generators based wind farm for various timing schemes of crowbar deactivation and resumption of rotor side converter (RSC) in the case of grid fault. Also, usage of a static synchronous compensator (STATCOM) for the purpose of stabilizing the grid voltage after a three-phase fault is studied in this these. Moreover, finding minimum capacity of STATCOM which ensures low-voltage ride through (LVRT) of wind farm is studied. Finally, coordination of reactive power from wind turbine generators and STATCOM in steady-state condition is performed. All the results in this thesis show that STATCOM improves low voltage ride through (LVRT) capability of wind farm and assists for an uninterrupted operation of wind turbine generators during grid faults.

Dynamic Modeling and Simulation of Doubly-Fed VSCF Wind Generator Based on PSCAD/EMTDC

2012 ◽  
Vol 608-609 ◽  
pp. 748-754
Author(s):  
Kang Yi Li ◽  
Chao Lu ◽  
Xiao Zhen Zhang ◽  
Miao Yu
Keyword(s):  
Large Scale ◽  
Wind Farm ◽  
Reactive Power ◽  
Low Voltage ◽  
Short Circuit ◽  
Implementation Process ◽  
Maximum Point ◽  
Wind Generator ◽  
Farm Model ◽  
Doubly Fed

In order to build an aggregated wind farm model to research on the effect large scale wind power has on the transient performance of the power system, firstly, it is necessary to build an effective WTGs model. Based on the electro-magnetic transient simulation platform PSCAD/EMTDC, this paper built models of all the parts of Doubly-fed type VSCF wind generator, including wind model, wind turbine model, rotation system model, detailed converters model, and emphatically expounded the implementation process of the control strategy based on the stator flux vector oriented principle. Then through the change of wind speed and setting three-phase short-circuit fault on the net side, the model is verified on the decoupling control of active and reactive power for maximum point power tracking (MPPT) and the ability of low voltage ride-through.

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