Abstract
The high voltage direct hanging energy storage system can effectively solve the problems of fluctuation and intermittence caused by environmental factors, and improve the ability of power system to absorb new energy. By controlling the energy storage, the new energy station has certain inertia and damping characteristics, so that the new energy power station can be connected to the grid friendlier. Starting from the time scale division method of inertial response control, this paper studies the energy demand of inertial response of large-scale new energy power station in different time scales, and gives the inertial response control strategy under different time scales. The model of high voltage direct hanging energy storage system is established, and the inertia response characteristics control technology is verified.
Highlights
Energy is an important factor to maintain human survival and development
The rotary inertia and system damping of the power system are relatively reduced, and they are more vulnerable to voltage fluctuations, power fluctuations and system failures
This paper focuses on the grid connection technology of new energy power station based on high voltage direct hanging energy storage system [5], and puts forward the key technology of inertial response control for energy storage to enhance the active support capacity of new energy power station, so that the new energy power station can actively support the stability of grid voltage and frequency, and promote the development of friendly access technology of new energy sources
Summary
Energy is an important factor to maintain human survival and development. The increasing population and the development of social economy need a lot of energy as the driving force. It is considered to improve the energy storage technology and apply it to the new energy grid connected device, so as to reduce the power fluctuation of the power generation system and have the ability of frequency modulation [3] It can effectively solve the problems of fluctuation and intermittence of new energy power generation caused by environmental factors, and improve the ability of power system to absorb new energy. Some advanced control strategies for the inverter interface need further research and development to improve the inertia response and damping characteristics of the grid connected new energy power station, and escort the safe and stable operation of the large power grid. This paper focuses on the grid connection technology of new energy power station based on high voltage direct hanging energy storage system [5], and puts forward the key technology of inertial response control for energy storage to enhance the active support capacity of new energy power station, so that the new energy power station can actively support the stability of grid voltage and frequency, and promote the development of friendly access technology of new energy sources
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