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Large destabilization real-time simulation system based on nonlinear robust power system stabilizer

A power system, real-time simulation technology, applied in general control systems, motor generator testing, control/regulation systems, etc., can solve problems such as large differences and inability to truly reflect NR-PSS performance

Active Publication Date: 2008-02-06
TSINGHUA UNIV
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Problems solved by technology

However, due to the limitation of on-site unit equipment and system operation safety conditions, the performance of NR-PSS can only be tested under the condition of small disturbances in the system; although the dynamic model experiment can simulate the conditions of large disturbances in the system, due to the parameters of the unit And the structure of the dynamic model experiment system is quite different from the actual operating system on site, so it cannot truly reflect the performance of NR-PSS in all aspects when large disturbances occur in the actual operating system

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  • Large destabilization real-time simulation system based on nonlinear robust power system stabilizer
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  • Large destabilization real-time simulation system based on nonlinear robust power system stabilizer

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Embodiment Construction

[0054] The basic idea of ​​NR-PSS is to establish a robust nonlinear dynamic model of power system excitation control, using the feedback linearization method to obtain an accurate linearization model of the system, and then applying the linear H ∞ The control theory designs its robust control law, and finally returns to the designed nonlinear feedback law to obtain the NR-PSS control law of the i-th generator in the original system as

[0055] V fiNR - PSS = E qi - T d 0 i ′ i qi [ E qi ′ i · qi + ( x qi ...

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Abstract

The present invention discloses a large perturbation real-time simulation system that is based on non-linear robust electricity system stabilizer and pertains to the experimental technique of stability of electric power system. The present invention is characterized in that: the stimulation system consists of a power amplifier, a non-linear robust electricity system stabilizer NR-PSS and an electricity system real-time stimulator RTDS that are connected in series. The composite signals of the excitation control and controllable silicon sent to the RTDS generator is generated by NR-PSS. These contains the control signals of AVR and assistant excitation control signal that takes the influence of large perturbation signals into consideration, thus, the problems of large difference in field experiment when using dynamic stimulation large perturbation experiment and dynamic stimulation experiment due to generator terminal parameters. The present invention can reflect the performances of the NP-PSS in century operation system in large perturbation.

Description

technical field [0001] This paper belongs to the field of power system stability control technology and simulation experiment method. Background technique [0002] Various performances of the nonlinear power system stabilizer (NR-PSS) device can be verified through dynamic model experiments and field tests. However, due to the limitation of on-site unit equipment and system operation safety conditions, the performance of NR-PSS can only be tested under the condition of small disturbances in the system; although the dynamic model experiment can simulate the conditions of large disturbances in the system, due to the parameters of the unit The structure of the dynamic model experiment system is quite different from the actual operating system on site, so it cannot truly reflect the performance of NR-PSS in all aspects when large disturbances occur in the actual operating system. The above-mentioned limitations can be overcome by using RTDS large disturbance simulation experime...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02P9/14G05B13/04G01R31/34
Inventor 卢强郑少明于同伟劳国强梅生伟
Owner TSINGHUA UNIV
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