Super-capacitor configuration method adaptive to pulse load power fluctuation stabilization

Abstract

The invention relates to a super-capacitor configuration method adaptive to pulse load power fluctuation stabilization. The super-capacitor configuration method includes firstly acquiring industrial production pulse load data, and analyzing the characteristics of the pulse load to obtain typical daily pulse load impact sample data; secondly, determining relevant optimization goals and constraints of the pulse load stabilization; subjecting typical daily pulse load data frequency domain signals after time-frequency conversion to critical frequency search to obtain the critical frequency of the maximum impact limit; finally, considering the optimization goals and the constraints to determine the rated power, the rated capacity and the initial load capacity of an energy storage system of a super-capacitor. By configuring energy storage to alleviate the impact of the pulse load of the industrial production on the power grid, theoretical basis can be provided for the energy storage configuration of the super-capacitor of the pulse load.

Description

technical field [0001] The invention relates to the field of supercapacitor energy storage configuration, in particular to a supercapacitor configuration method adapted to smooth pulse-type load power fluctuations. Background technique [0002] With the continuous expansion of my country's industrial production scale, large-capacity and fluctuating loads have emerged one after another, which puts forward higher requirements for the bearing capacity and stability of the power grid. Due to its own characteristics, the microgrid has small system inertia, insufficient damping, and does not have the anti-disturbance ability of the large power grid. At the moment when the energy demand changes, the distributed power supply cannot meet the demand, so the microgrid needs to rely on energy storage devices (ESS, Energy Storage System) to achieve energy balance. Energy storage is especially important for microgrids with shock loads. [0003] At present, the research on impact load at...

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Problems solved by technology

The research on energy storage configuration focuses on wind and solar hybrid systems, and proposes an estimation algorithm for wind farm energy storage capacity for short-term power grid dispatching, and evaluates the economics and saturation-based capacity allocation of energy storage systems for peak load and valley filling. There are still relatively few studies on energy storage capacity allocation under shock load scenarios, such as the capacity allocation method of energy storage devices based on control theory.

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