SVC sliding mode control method based on integration adaptive backstepping

A technology of self-adaptive inversion and control method, applied in AC network voltage adjustment, reactive power adjustment/elimination/compensation, flexible AC transmission system, etc.

Inactive Publication Date: 2017-10-10
李昊昊 +2
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

[0005] The technical problem to be solved by the present invention is to overcome the defects of the prior art, provide a kind of SVC sliding mode control method based on integral self-adaptive inversion, and solve the stability control problem of the power system equipped with SVC

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  • SVC sliding mode control method based on integration adaptive backstepping
  • SVC sliding mode control method based on integration adaptive backstepping
  • SVC sliding mode control method based on integration adaptive backstepping

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Embodiment Construction

[0073] The present invention will be further described below. The following examples are only used to illustrate the technical solution of the present invention more clearly, but not to limit the protection scope of the present invention.

[0074] The present invention provides an SVC sliding mode control method based on integral self-adaptive inversion, which solves the problem of stable control of the power system equipped with SVC, comprising the following steps: performing mathematical description on the power system equipped with SVC; designing a controller based on the integral inversion method , first design the tracking error of the state variable, and add the integral term to the error term, and consider the uncertainty of the system parameters at the same time, and use the adaptive law to deal with it; and add the Terminal sliding mode surface in the last step to obtain the SVC integral self-adaptive inversion stability The controller completes the SVC sliding mode c...

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Abstract

The invention discloses a SVC sliding mode control method based on integration adaptive backstepping; the control method comprises the following steps: building a SVC equipment single-machine infinite bus system dynamic mathematics model, designing a controller according to an integration adaptive backstepping method, firstly designing a state variable tracking error, adding an integration item into the error item, simultaneously considering system parameter nondeterminacy, building a Liapunov function, online adaptively processing the uncertain parameters, finally adding a Terminal slide mode surface, obtaining a SVC integration adaptive backstepping stable controller, and finishing SVC sliding mode control based on integration adaptive backstepping. The method uses the adaptive integration method to eliminate errors, adds the Terminal slide mode control, so the system has stronger robustness on interference and system perturbation; the method can fast damp power concussions, can keep the machine end voltage, and can improve the power system transient stability.

Description

technical field [0001] The invention relates to an SVC sliding mode control method based on integral self-adaptive inversion and belongs to the technical field of SVC power system control. Background technique [0002] SVC (Static Var Compensator) is widely used in modern power systems to balance reactive power and improve power system stability. With the rapid development of the national economy, the structure of the modern power system is becoming more and more complex, with the characteristics of UHV, long-distance, large-capacity and cross-regional interconnection, making the stable operation of the system more susceptible to interference from various natural and human factors. damaged. SVC is currently a widely used method to solve this problem. After the SVC device is connected to the reactive load access point, it can effectively suppress the impact of reactive load, filter out high-order harmonics, balance the three-phase power grid, and stabilize the power grid. T...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J3/16H02J3/18
CPCH02J3/16H02J3/18H02J2203/20Y02E40/10Y02E40/30
Inventor 李昊昊徐子安强龙龙
Owner 李昊昊
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