1. Current status of power quality of new energy power plants
At present, the main new energy power plants in China are mainly wind farms and photovoltaic power plants. Because of the randomness and intermittency of wind and solar energy, the output power of generator sets fluctuates, which is easy to cause problems such as unqualified grid connected power factor, voltage deviation, voltage fluctuation and flicker. In addition, large-scale wind farms or photovoltaic power plants connected to the power grid will have a negative impact on the safe and stable operation of the power system and power quality. Grid connection will consume a certain amount of reactive power and have a negative impact on the voltage quality of the system, as well as harmonics.
2. Solutions
The optimal selection of reactive power compensation for new energy power plants can effectively improve the success rate of grid connection, not only meet the power factor, voltage fluctuation and flicker requirements of wind power or photovoltaic access systems, but also reduce the impact of system disturbance on power generation equipment.
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