In order to improve the accuracy and speed of simulation, a piecewise linear (PWL) network simulation method based on FPGA is proposed. Through RT-LAB hardware in the loop simulation platform and supporting FPGA development tools, a simulation system based on FPGA is established. The nonlinear element is modeled by PWL approximation method. The system matrix method that accurately supports the characteristics of any PWL element is applied, so that the realtime simulation system can fit the real operating state of the system, and has very good simulation accuracy and simulation results. In order to verify the effectiveness of the system, an energy storage grid connected test system is established by using the PWL network system based on FPGA. The experiment proves the effectiveness of the PWL network simulation based on FPGA.
KEYWORDS: Solar energy, Control systems, Internet, Fusion energy, Wind energy, Data acquisition, Information and communication technologies, Data storage, Telecommunications, Photovoltaics
With the proposal of China's "two carbon" strategy, it is very important to promote the development of new energy represented by wind power and photovoltaic in order to achieve this goal. However, due to the intermittent and fluctuating characteristics of distributed renewable energy such as wind energy and solar energy, its large-scale grid connection would have a great impact on the safe and stable operation of the power system. Virtual power plant could integrate all kinds of distributed energy, its organizational structure was more suitable for distributed power grid connection, and then reduced the impact of the randomness and volatility of distributed generation on the operation and scheduling of the main network, which met the development requirements of active response of active distribution network. This thesis summarizes the concept, development status, operation control key technology and typical application of virtual power plant, and introduces in detail the application examples of demonstration project of virtual power plant in northern Hebei Province. Finally, the prospect of virtual power plant is put forward.
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