Wind Farm Reactive Power Distribution Control
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Wind farms with non-identical wind turbines face challenges in distributing reactive power efficiently, leading to potential power losses due to uneven active and reactive power generation, especially when some turbines generate little active power while required to produce significant reactive power.
Innovation Solution
A method to calculate and distribute reactive power among wind turbines based on their individual active power outputs, ensuring that turbines generating more active power also contribute proportionally more reactive power, minimizing losses and optimizing power distribution within the wind farm.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If reactive power is distributed equally among all wind turbines, then the control method is simple, but wind turbines with different rated powers or operational statuses cannot contribute proportionally, leading to inefficiency
Solution Approach 1:
The patent applies local quality by assigning different reactive power generation tasks to individual wind turbines based on their specific characteristics (rated power, operational status). Instead of uniform distribution, each turbine contributes according to its capability, creating a differentiated control strategy that optimizes overall wind farm performance while accounting for local variations in turbine performance
2Productivity
If reactive power is distributed based on rated power, then turbines contribute proportionally to their capacity, but turbines with low active power output still generate significant reactive power, causing power losses
Solution Approach 1:
The patent implements dynamics by continuously adjusting the reactive power distribution strategy based on real-time active power output of each wind turbine. The control method dynamically adapts to changing operational conditions, ensuring that reactive power generation is optimized according to current active power levels rather than static rated power values, thereby minimizing energy losses
3Reliability
If wind turbines generate significant reactive power while producing little active power, then voltage support is provided, but power losses increase due to inefficient operation
Solution Approach 1:
The patent applies parameter changes by adjusting the reactive power setpoint of each wind turbine based on its active power output parameter. When active power output is low, the reactive power requirement is reduced proportionally, preventing inefficient operation. This dynamic parameter adjustment maintains voltage support capability while avoiding excessive power losses during low-active-power periods
Data Source
AI summary
Provided is a method of feeding electric reactive power using a wind farm comprising wind turbines. The wind farm feeds a wind farm active power output and the wind farm active power output includes individual plant active power outputs each generated by one of the wind turbines. The wind farm feeds a wind farm reactive power output into the electrical supply network and the wind farm reactive power output includes individual plant reactive power outputs each generated by one of the wind turbines. The method includes determining a total wind farm reactive power output to be fed in by the wind farm and calculating, for each wind turbine, an individual plant reactive power output to be generated. The individual plant reactive power output is determined depending on the individual plant active power output and depending on the wind farm reactive power output to be fed in.