Research and Realization of Wind Farm Inertia Response and Primary Frequency Regulation Scheme

Abstract

With the substantial increase of the installed capacity of wind power, it has brought great challenges to grid stability and safety. In order to improve the grid stability and the anti-interference ability of grid frequency, wind farms urgently need to have frequency regulation function and increase frequency response speed. According to the latest technical requirements such as starting time and adjustment time of grid, this paper analyzes the current mainstream frequency regulation schemes in the market. A frequency regulation scheme combining energy management platform and frequency regulation equipment is proposed, so that the wind turbine receives instructions from the energy management platform and frequency regulation equipment at the same time, and adopts different control strategies for inertia response and primary frequency regulation to adjust the active power of the wind farm to ensure the response speed and stability during frequency regulation.The scheme has been tested for inertia response and primary frequency modulation in a wind farm in Yunnan province. In the test results, the response time of inertia response is less than 1 sec, the control deviation is within ±1% of rated capacity, the starting time of primary frequency modulation is less than 2 sec, the response time is less than 5 sec, the adjustment time is less than 8 sec, and the control deviation of primary frequency regulation is within ±1% of rated capacity. All the technical indexes meet the requirements of Yunnan Grid.

Keywords

• wind farm
• inertia response
• primary frequency regulation
• grid stability
• energy management platform