Phase compensation principle-based design method for energy storage damping controller

Abstract

The invention relates to a phase compensation principle-based design method for an energy storage damping controller. A parallel-form energy storage device is controlled by the real-time monitoring information of a tie line, and power oscillation on the tie line is suppressed. According to the method, the current and voltage information of nodes at the two ends of the tie line is provided by the conventional wide area measurement system / energy management system (WAMS / EMS), and is synthesized into a feedback control signal of the energy storage damping controller, and an output power instruction value of the energy storage device is directly formed through a measurement amplification link, a blocking link and a phase shift link. A frequency converter of the energy storage device generates specified active power through a given power value, and injects the specified active power into a power grid, so that the power oscillation on the tie line is suppressed. Parameters of the controller are set on the basis of a phase compensation principle by fully utilizing the real-time monitoring information of the tie line; the controller is simple and reliable in structure; and the tie line power oscillation suppression efficiency of the energy storage device can be improved.

Description

technical field [0001] The invention relates to the technical field of power system stability control, in particular to an application technology of an energy storage device in power system power oscillation suppression. Background technique [0002] The 38th Research Committee of the International Large Power Grid Conference once organized a special working group (Task Force 38.01.07) to study the low-frequency oscillation problem of the power grid. Power system stabilizer (PSS); secondly, the parameter setting of the additional controller of the existing high-voltage direct current transmission (HVDC) and static var compensator (SVC) in the system should be studied, so that it can provide additional damping effect; then consider using FACTS such as TCSC The device provides smooth damping control; finally consider adding a new device to the system entirely for damping oscillations. [0003] Since power oscillations on tie-lines usually involve a large number of generator s...

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Problems solved by technology

[0006] The technical problem to be solved by the present invention is to provide a simple and effective design method for an energy storage damping controller used to suppress the power oscillation of the tie line of the interconnected power system, so as to solve the problem of power oscillation on the important tie line of the interconnected power system

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