Multi-machine electric power system wide-area damping control method under elastic event triggering mechanism

Abstract

The invention discloses a multi-machine electric power system wide-area damping control method under an elastic event triggering mechanism. A multi-machine electric power system is controlled by a wide-area damping control system which consists of a vector data concentrator, an event trigger, a PMU, a generator and a wide-area damping controller, wherein the control method of the wide-area dampingcontrol system comprises the steps of S1, establishing a DoS attack model for simulating real DoS attack; S2, judging whether a control signal is blocked by the DoS attack or not, wherein the wide-area damping controller performs elastic control according to the judging effect to ensure stability of the multi-machine electric power system; S3, enabling the vector data concentrator to transfer thestate signals of the multi-machine electric power system collected in each time to the event trigger to judge whether a trigger algorithm of the event trigger is satisfied or not; and S4, enabling the event trigger to respond the judgment result of the step S3 to determine whether to transfer the control signal to the wide-area damping controller or not, so that occupation of limited bandwidth resource is reduced; and by virtue of the multi-machine electric power system wide-area damping control method, safe and stable operation of the system can be ensured.

Description

technical field [0001] The invention relates to the technical field of power system controller design, in particular to a multi-machine power system wide-area damping control method under an elastic event trigger mechanism. Background technique [0002] In recent years, as the scale of the power system has become larger and larger, the interconnection between large power grids has become stronger and stronger. The interconnection of large power grids can improve the economy of system operation and has become an inevitable choice for a conservation-oriented society. Various control systems have put forward new requirements. Conventional protection and control based on local measurement information and a small amount of regional information face difficulties in solving these problems. The wide-area measurement system based on GPS technology has drawn more and more attention to wide-area control from a system perspective. The investment in building a private network is huge, s...

AI Technical Summary

Problems solved by technology

For example, spoofing attacks and denial of service attacks, etc., denial of service attacks will occupy communication channels, consume network bandwidth, and cause normal communication to be blocked; signal transmission being blocked may lead to instability of the entire power system

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