A Generator Power Oscillation Damping Controller Based on Energy Storage Device

Abstract

The invention relates to a generator power oscillation damping controller based on an energy storage device, which includes two microprocessors MCU1 and MCU2, the microprocessor MCU1 is used to perform input state acquisition, and the microprocessor MCU2 is used for damping control, including The microprocessor MCU1 collects the output power of the generator, and the microprocessor MCU2 obtains the given active power regulation signal of the power regulation system of the energy storage device and outputs it. The controller uses a nonlinear proportional-integral-derivative controller to generate power adjustment instructions for suppressing generator power oscillation. The control strategy has the characteristics of simple control strategy implementation and good robustness of the controller; through the cooperative work of dual CPUs , which effectively improves the real-time performance of the controller and greatly reduces the execution cycle of complex control algorithms; it can also realize other applications of energy storage devices in power systems by modifying the control strategy. It has the characteristics of simple structure and easy engineering implementation.

Description

technical field [0001] The invention relates to the technical field of power system power oscillation damping control, in particular to a controller that uses dynamic unbalanced power compensation of an energy storage device to provide oscillation damping for the power system to suppress generator power oscillation. Background technique [0002] Under the situation of my country's west-to-east power transmission, north-south mutual supply, and national networking, the possibility of low-frequency power oscillations occurring on long-distance, heavy-duty transmission lines or connecting lines between regional power grids will greatly increase. When low-frequency power oscillation occurs in the power system, the power and power angle of the generator will continue to oscillate for a long time at a frequency of 0.2-2.5Hz, and because the rotors of the units involved in the oscillation will swing relative to each other, the power of the transmission line will be transmitted back ...

AI Technical Summary

Problems solved by technology

Therefore, although the energy storage device has a variety of power system applications, its normal operation and effective utilization are guaranteed by the corresponding outer loop controller.

However, there is no technical solution with practical significance

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