Detection method of grid voltage sag for offshore wind power converter

Also Available Domains Hybrid Systems

Project Code :TEPGPS455


When the offshore wind converters are connected to the grid by high voltage direct current, the voltage sag will lead to the disconnection of wind turbines. Therefore, the research of low voltage ride through (LVRT) is increasingly important, whose premise is to detect the grid voltage amplitude quickly and accurately. Firstly, this paper briefly concludes several traditional methods of detecting voltage sag, among which dq transformation based on synchronous rotating frame (SRF) is more suitable for offshore wind power converter due to its accuracy and timeliness.

 This paper then introduces the principle of dq transformation based SRF phase locked loop (SRF-PLL) as well as its improvement scheme in detail, compares and analyzes the characteristics of delayed signal cancelation (DSC), double second-order generalized integrator (DSOGI) and adaptive notch filter (ANF). Finally, an idea of selecting and improving the traditional method of detecting voltage sag is proposed. This paper distinguishes the differences between the existing traditional detection methods and the improved dq transformations, and provides an idea for selecting and improving the detection method of grid voltage sag suitable for LVRT of offshore wind power converters.

Keywords—wind power converter; voltage sag detection method; dq transformation; phase locked loop (PLL).

NOTE: Without the concern of our team, please don't submit to the college. This Abstract varies based on student requirements.

Block Diagram


Software Configuration:

Operating System :  Windows 7/8/10

Application Software :  Matlab/Simulink

Hardware Configuration:

RAM :  8 GB

Processor :  I3 / I5(Mostly prefer)

Learning Outcomes

  • Introduction to Matlab/Simulink
  • How to start with MATLAB
  • About Matlab language
  • About tools & libraries
  • Application of Matlab/Simulink
  • About Matlab desktop
  • Features of Matlab/Simulink
  • Basics on Matlab/Simulink
  • Introduction to controllers.
  • Study of PWM techniques.
  • Project Development Skills:
    • Problem analyzing skills
    • Problem solving skills
    • Creativity and imaginary skills
    • Programming skills
    • Deployment
    • Testing skills
    • Debugging skills
    • Project presentation skills
    • Thesis writing skills

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