Energy storage frequency modulation system charging and discharging response time test method, system and equipment

Abstract

The invention discloses an energy storage frequency modulation system charging and discharging response time test method, system and equipment, and the method comprises the steps: enabling a resistorto be connected in series to the automatic gain control signal receiving loop of an energy storage frequency modulation system, initializing an automatic gain control signal, enabling the power instruction value to be P1, and enabling the output power of the energy storage frequency modulation system to be 0; adjusting the power instruction value P1 + Pn / P1-Pn, adjusting the power instruction value to P1 again after a certain time interval, calculating the time when the output power of the energy storage frequency modulation system is increased from 0 to 90% Pn, and taking the time as the discharging / charging response time of the energy storage frequency modulation system. The resistor is connected in series in the signal receiving loop of the energy storage frequency modulation system, and the automatic gain control signal is converted into the voltage signal of the resistor so that the time when the energy storage frequency modulation system receives the automatic gain control signaland the moment when the automatic gain control signal changes can be accurately acquired, and the charging or discharging response time of the energy storage frequency modulation system can be calculated.

Description

technical field [0001] The invention relates to the technical field of charge and discharge response time of an energy storage frequency modulation system, in particular to a method, system and equipment for testing the charge and discharge response time of an energy storage frequency modulation system. Background technique [0002] At present, with the rapid development of renewable energy and large-scale access to the power grid, as well as the continuous improvement of power quality requirements on the user side, the power grid has higher and higher requirements for frequency regulation capabilities on the power side. Due to the hysteresis of traditional energy sources (especially thermal power) in responding to frequency modulation signals, the frequency modulation speed is slow and cannot meet the new frequency modulation demand. The energy storage system, especially the electrochemical energy storage system, has become a new high-efficiency frequency modulation method ...

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Problems solved by technology

[0006] The invention provides a method, system and equipment for testing the charge and discharge response time of an energy storage frequency modulation system, which are used to solve the problem of ignoring the reception and processing of the energy storage frequency modulation system in the prior art when measuring the charge and discharge response time of the energy storage frequency modulation system A technical problem with the timing of the signal leading to inaccurate measurements

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