Abstract:
Wind power as a rule does not contribute to voltage in grids. Also, wind power very
often is a source of voltage fluctuations and flicker. Furthermore, care must be taken
to upkeep availability of networks more or less dependent on wind power by
preventing the voltage from collapsing in conjunction with faults occurring in the
grid.
The operation of wind turbines has an impact on the power quality of the connected
grid. Depending on the grid configuration and the type of wind turbine used,
different power quality problems may arise. All wind turbines have an uneven power
production following the natural variations of the wind. If the wind turbine is
operating at fixed-speed, the tower shadow and wind speed gradients will result in
fluctuating power. The power fluctuations caused by the turbine may cause flicker
disturbances.
In order to evaluate the significance of flicker, measurements and subsequent flicker
calculations must be performed. In the case of variable-speed wind turbines, one
drawback is the injection of harmonic currents into the grid. Depending on the type
of inverter used, different orders of harmonics are produced.
The objective of the research is to analyze the problem of voltage and current
harmonics, transient behaviour, power fluctuation and reactive power consumption
of Puttalam wind power generators.
This study will conduct a detail study and to identify the power quality issues due to
integration of wind plants to Puttalam GSS.
