Power grid simulator control system and method based on fuzzy PI and QPR

A power grid simulator and control system technology, applied in the direction of electrical components, circuit devices, AC network circuits, etc., can solve the problems of anti-interference ability and response speed, high-frequency jitter, difficult to ensure the quality of output waveforms, etc., to achieve enhanced anti-interference Effect of jamming capability and speed of response

Pending Publication Date: 2021-04-23
SHANGHAI DIANJI UNIV
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Problems solved by technology

[0008] Sliding mode variable structure control, sliding mode variable structure has strong robustness, but the sampling of the system and the determination of the sliding mode surface will restrict the control performance, and i

Method used

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  • Power grid simulator control system and method based on fuzzy PI and QPR
  • Power grid simulator control system and method based on fuzzy PI and QPR
  • Power grid simulator control system and method based on fuzzy PI and QPR

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Embodiment

[0045] like Figure 1 ~ Figure 3 As shown, a power grid simulator control system based on fuzzy PI and QPR includes a DC power module 1, an inverter module 2, a filter 3 and a load 4 connected in sequence. The DC power module 1 includes a rectifier connected to the grid output Unit 101, the rectification unit 101 is used to rectify the three-phase alternating current output from the grid output terminal into direct current, the control terminal of the inverter module 2 is connected to the output terminal of the control module 5, and the input terminal of the control module 5 is respectively connected to the filter 3 and the load 4-phase connection, the filter 3 is specifically an LC filter, the control module 5 performs voltage control based on the fuzzy PI of the voltage outer loop, and performs current control based on the current inner loop QPR, so as to modulate the output switch control signal to the inverter module;

[0046] The inverter module 2 inverts the DC power out...

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Abstract

The invention relates to a power grid simulator control system and method based on fuzzy PI and QPR. The system comprises a DC power module, an inversion module, a filter and a load which are connected in sequence. The control end of the inversion module is connected to the output end of a control module, and the input end of the control module is connected with the filter and the load. The control module performs voltage control based on the voltage outer loop fuzzy PI and performs current control based on the current inner loop QPR so as to modulate and output a switch control signal to the inversion module. The inversion module inverts the direct current output by the DC power module according to the switch control signal, and outputs to obtain an alternating current fault test waveform. Compared with the prior art, PI control parameter optimization can be autonomously performed according to the change of the system so that the system is enabled to always operate in the optimal state, output of the required waveform can be achieved, and the system and the method have the advantages of being high in anti-interference capability, high in response speed and great in stability.

Description

technical field [0001] The invention relates to the technical field of grid simulator control, in particular to a grid simulator control system and method based on fuzzy PI and QPR. Background technique [0002] During the actual operation of the power grid, there will be various faults or abnormal states in the power grid. With the gradual expansion of the power network, it is inevitable that the power grid will fail during operation, and it is random and uncontrollable. With the development of new energy power generation technology, the scale of new energy power generation grid connection is also continuously expanding. To ensure For the normal and stable operation of the power grid, the existing research proposes a grid simulator that can simulate the fault environment of the grid and detect the grid-connected adaptability of various electrical equipment. In the actual application of the grid simulator, it is necessary to control the grid simulator , the current control ...

Claims

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Application Information

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IPC IPC(8): H02M1/08H02M1/12H02J3/00
CPCH02M1/08H02M1/12H02J3/00H02J2203/20
Inventor 任怀信谢源
Owner SHANGHAI DIANJI UNIV
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