SFR and ELM based power grid transient state frequency characteristic prediction method
A technology of frequency characteristics and power grid transients, applied to electrical components, circuit devices, AC network circuits, etc., can solve problems such as reduced calculation accuracy, achieve the effect of improving accuracy and reliability, and reducing risks
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[0025] The technical solution of the present invention will be further described below in conjunction with the accompanying drawings.
[0026] figure 1 It is a framework diagram of an online prediction model for power grid transient frequency characteristics proposed by the present invention. The main factors that determine the frequency response characteristics of the system after being disturbed in the power grid are the inertia, damping and speed regulation characteristics of the system composed of generator sets and loads. In the present invention, the SFR model is established based on this; while the grid structure, voltage and reactive power dynamic characteristics, etc. It also has a slight impact on the system frequency situation, and the present invention establishes an ELM-based error correction model based on this. Disturbance event description, power system topology / parameters, state data and other information are used as the input of the SFR model; the measuremen...
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