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Input quantization finite-time fault-tolerant anti-jamming control method for multi-machine power system

An electromechanical system, finite time technology, applied in the field of input quantification finite time fault-tolerant anti-interference control of multi-machine power system, can solve the problems of system uncertainty, system instability, jitter, etc., to ensure safety and improve control efficiency Effect

Active Publication Date: 2022-07-12
NANJING NORMAL UNIVERSITY
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Problems solved by technology

Combined with quantized control technology, the finite-time FTC input signal is transformed into a discrete set of constants, but this may lead to a special class of system uncertainty and may make the system unstable or jittery

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  • Input quantization finite-time fault-tolerant anti-jamming control method for multi-machine power system
  • Input quantization finite-time fault-tolerant anti-jamming control method for multi-machine power system
  • Input quantization finite-time fault-tolerant anti-jamming control method for multi-machine power system

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Embodiment Construction

[0060] The technical solutions of the present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.

[0061] An input quantized nonlinear system fault-tolerant adaptive control method of the present invention includes the following contents:

[0062] 1. Mathematical model of multi-machine power system;

[0063] The control problem of multi-machine power is a valuable research topic. Generator G in the area 1 and G 2 and G 3 and G 4 The electrical connections are close, and the dynamic behavior is similar after disturbance, so we can equate each area as a generator, such as figure 2 shown. When designing the controller, the following assumptions are made: the generator adopts the hidden pole machine, and the model adopts the classical second-order model; the generator adopts the transient reactance to make the transient potential E 1 and E 2 constant; input mechanical power P m1 and P m2 Constant; considerin...

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Abstract

The invention discloses an input quantized finite-time fault-tolerant anti-interference control (FTC) method of a multi-machine power system, comprising the following contents: Step 1. Based on the mathematical model of the multi-machine power system, a more general method with quantized input is established. step 2, propose a hysteresis quantizer to quantize the input signal to reduce jitter; step 3, design and stability analysis of the adaptive controller. The effectiveness of the control method proposed in the present invention is verified by simulation research on a two-region four-machine power system with thyristor-controlled series capacitance compensation technology (TCSC). Compared with the prior art, the present invention proposes a new adaptive control scheme by introducing a new quantitative control scheme and a novel fault-tolerant control method for uncertain actuator faults. And the adaptive controller designed by the present invention can ensure the limited time global stability of the closed-loop system.

Description

technical field [0001] The invention relates to an automatic control method, in particular to an input quantization finite-time fault-tolerant anti-interference control method of a multi-machine power system. Background technique [0002] The input quantization finite-time fault-tolerant control of the multi-machine power system is a control technology that can automatically eliminate the influence of the fault on the power system under the condition that the input is quantized, and restore to a reasonable performance index in a limited time. The traditional power system stabilizers are designed based on the linear model of the power system, but in order to preserve the nonlinear characteristics of the power system, the nonlinear control of the power system has received attention. The finite-time control problem of nonlinear systems has received extensive attention. Literature "H.Du,J.Zhai,M.Z.Q.Chen,and W.Zhu.Robustness analysis of a continuous higher-order finite-time con...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02J3/00
CPCH02J3/00H02J2203/20
Inventor 刘文慧金璇刘国宝齐晓静孟波
Owner NANJING NORMAL UNIVERSITY
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