New energy output simulation application system and simulation method thereof

The invention discloses a new energy output simulation application system and a simulation method thereof. The system comprises an AC/DC (Alternative Current/Direct Current) rectification module, a direct current voltage-stabilizing module, a DC/AC inverter, an isolating transformer, an upper-layer central controller and a bottom-layer unit controller, wherein the AC/DC rectification module and the direct current voltage-stabilizing module are used for simulating a direct current voltage supply; and the DC/AC inverter is used for simulating new energy output or independent power supply output. The method comprises the following steps that: the power curve value of the new energy is received by using the upper layer central controller, or after receiving a new energy representation index, a corresponding power curve value is obtained through calculation, and a scheduling management signal is transmitted; and the scheduling management signal is received by the bottom-layer unit controller in real time so as to realize the fixed power control, the constant voltage constant frequency control or the sag control. According to the system and the method, the upper-layer central controller is used for coordinating and managing the bottom-layer unit controller, so that the bottom-layer unit controller can power in accordance with an appointed power curve; the investment cost is low; the construction period is short; the operation is simple and flexible; and the system and the method can be widely used in experiment systems for simulating the power of distributed power supplies such as wind energy, photovoltaic energy and energy storage.