Is Westernisation Cultural Degradation or Enrichment
FACTS-based reactive power compensation of wind energy conversion system
abstract
Voltage control and reactive power compensation in a distribution network with embedded wind energy conversion system (WECS) represent main concern of this paper. The WECS is of a fixed speed/constant frequency type that is equipped with an induction generator driven by an unregulated wind turbine. The problem is viewed from short term (10 seconds) and mid-term (10 minutes) time domain responses of the system to different wind speed changes. Being disturbed by a variable wind speed, the WECS injects variable active and reactive power into the distribution network exposing nearby consumers to excessive voltage changes. In the FACTS-based solution approach, the Unified Power Flow Controller (UPFC) is used at the point of the WECS network connection to help solve technical issues related to voltage support and series reactive power flow control.
INTRODUCTION
Recently, alternative solutions treating distributed generation of electrical energy have appeared as a consequence of strong ecological concerns with regard to almost all major industrial branches. Moreover, initiatives of potential investors come along with liberalization of electrical energy market. It results with an --additional impact to a need for conducting a new kind of technical analysis. Grid integration aspects of renewable sources have become increasingly important as incentives come in large numbers. From distribution network viewpoint, connection of small power plants with dispersed generation of electricity calls for urgent attention. In case of increased power ratings, dispersed power plants could be integrated in a transmission network. Dispersed generation of electricity is often a subject of polarized discussions. At one side, experienced engineers motivated by wide knowledge of complex power system operation are concerned regarding fundamental realization of massive introduction of unregulated
abstract
Voltage control and reactive power compensation in a distribution network with embedded wind energy conversion system (WECS) represent main concern of this paper. The WECS is of a fixed speed/constant frequency type that is equipped with an induction generator driven by an unregulated wind turbine. The problem is viewed from short term (10 seconds) and mid-term (10 minutes) time domain responses of the system to different wind speed changes. Being disturbed by a variable wind speed, the WECS injects variable active and reactive power into the distribution network exposing nearby consumers to excessive voltage changes. In the FACTS-based solution approach, the Unified Power Flow Controller (UPFC) is used at the point of the WECS network connection to help solve technical issues related to voltage support and series reactive power flow control.
INTRODUCTION
Recently, alternative solutions treating distributed generation of electrical energy have appeared as a consequence of strong ecological concerns with regard to almost all major industrial branches. Moreover, initiatives of potential investors come along with liberalization of electrical energy market. It results with an --additional impact to a need for conducting a new kind of technical analysis. Grid integration aspects of renewable sources have become increasingly important as incentives come in large numbers. From distribution network viewpoint, connection of small power plants with dispersed generation of electricity calls for urgent attention. In case of increased power ratings, dispersed power plants could be integrated in a transmission network. Dispersed generation of electricity is often a subject of polarized discussions. At one side, experienced engineers motivated by wide knowledge of complex power system operation are concerned regarding fundamental realization of massive introduction of unregulated