scholarly journals Investigations of grid-connected wind power system : low voltage ride through and power quality issues

2011 ◽  
Author(s):  
Shao Zhang
Keyword(s):  
Power System ◽  
Wind Power ◽  
Power Quality ◽  
Low Voltage ◽  
Low Voltage Ride Through ◽  
Wind Power System ◽  
Quality Issues

Study of Improving Low Voltage Ride - Through Capability of Doubly - Fed Induction Generator by Using DVR

2014 ◽  
Vol 607 ◽  
pp. 531-535
Author(s):  
Chen Jian ◽  
Ren Yong Feng ◽  
Hu Hong Bin
Keyword(s):  
Power System ◽  
Wind Power ◽  
Low Voltage ◽  
Dynamic Voltage Restorer ◽  
Grid Voltage ◽  
Low Voltage Ride Through ◽  
Voltage Drops ◽  
Dynamic Voltage ◽  
Wind Power System ◽  
Doubly Fed

with the increasing proportion of wind power in whole power system ,the influence between wind power system and grid become more and more seriously ,so it is great important to research how to keep the connection between the wind power system and grid when grid voltage drops .The paper presents a new method to realize the low voltage ride - through (LVRT) of DFIG by using dynamic voltage restorer (DVR). Once the grid voltage drops,DVR will be put into use and produce compensation voltage to keep the stator side voltage steady .And it also can stop operation after the fault resolution.The paper builds a simulation model of DFIG and gives simulation results on PSCAD/EMTDC platform .

Overview of the Low Voltage Ride-Through Technology for Direct-Drive Permanent Magnetic Wind Power System

2011 ◽  
Vol 383-390 ◽  
pp. 424-429
Author(s):  
Xin Zhang Huo ◽  
Xiang Ning Xiao
Keyword(s):  
Adverse Effect ◽  
Power System ◽  
Wind Turbine ◽  
Wind Power ◽  
Low Voltage ◽  
Direct Drive ◽  
Low Voltage Ride Through ◽  
Control Objective ◽  
On Line ◽  
Wind Power System

In recent years, the proportion of the wind power in the grid is increasing rapidly. In addition, the penetration of wind power in grid has been rising. It will lead adverse effect to grid, if the wind turbine off-grid during the fault of network. Wind power technology-leading countries have issued the quantitative standards of fault through which requires on-line operation .In this paper, the influence of wind turbines off-grid on the grid and turbines during the fault of grid is analyzed firstly. Meanwhile, the control objective of the low voltage ride through (LVRT) is proposed. Several types of LVRT technology for the Permanent Magnetic wind Power System are summarized and evaluated respectively. Finally, the developing direction of this technology is drawn from the above discussion.

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