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Fault detection device for frequency modulation test platform power module of new energy unit

A frequency modulation technology for power modules and units, which is applied in the direction of output power conversion devices, measuring devices, and testing of machine/structural components. It can solve the problem of low accuracy and efficiency of fault detection, failure to detect faults in power modules, and integration of fault detection devices. In order to achieve the effect of improving accuracy and efficiency, portability, compatibility and practicability

Active Publication Date: 2021-02-02
YUNNAN POWER GRID CO LTD ELECTRIC POWER RES INST
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

To solve the problem that the existing power module fault detection device has low integration, cannot detect multiple power modules at the same time, has low accuracy and efficiency of fault detection, and cannot perform fault detection on power modules in a high-voltage environment

Method used

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  • Fault detection device for frequency modulation test platform power module of new energy unit
  • Fault detection device for frequency modulation test platform power module of new energy unit
  • Fault detection device for frequency modulation test platform power module of new energy unit

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Embodiment Construction

[0051] The embodiments will be described in detail hereinafter, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, the same numerals in different drawings refer to the same or similar elements unless otherwise indicated. The implementations described in the following examples do not represent all implementations consistent with this application. These are merely examples of systems and methods consistent with aspects of the present application as recited in the claims.

[0052] The frequency modulation test platform for new energy units is a device developed based on IGBT devices and PWM modulation technology, which can simulate the frequency fluctuation characteristics of the power grid to carry out frequency modulation tests for new energy units. In the normal test, when the frequency modulation test platform of the new energy unit is empty, that is, the fan is shut down, and it is not connecte...

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Abstract

The invention provides a fault detection device for a frequency modulation test platform power module of a new energy unit, and the device comprises an input and output module and a data processing module, and the input and output module and the data processing module are in bidirectional communication connection. The input and output module comprises an optical fiber analog quantity conversion unit, an analog quantity acquisition unit and an analog quantity output unit; and the data processing module comprises a display unit, a calculation unit and a data storage unit. The fault detection device of the power module is integrated, and is convenient to carry. The fault detection device can detect a plurality of power modules at the same time, calculation is carried out through the data processing module, and the power module fault detection accuracy and efficiency are improved. Fault detection can be carried out on the power module in a low-voltage environment and a high-voltage environment, so that the compatibility and the practicability of the power module fault detection device are improved.

Description

technical field [0001] The invention belongs to the detection field of a new energy unit frequency modulation test platform, and in particular relates to a fault detection device for a power module of a new energy unit frequency modulation test platform. Background technique [0002] The frequency modulation test platform for new energy units is a device that can simulate the frequency fluctuation characteristics of the power grid to conduct frequency modulation tests on new energy units. The new energy unit frequency modulation test platform mainly includes a power module composed of IGBT devices. When the new energy unit frequency modulation test platform is performing a low-voltage test, that is, the fan is shut down, and when it is not connected to the new energy unit frequency modulation test platform, the power module works as an inverter module. When the new energy unit frequency modulation test platform is performing high-voltage testing, that is, the fan is connect...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R31/00G01R19/165G01M99/00G06F17/14H02J3/38H02J3/48H02M7/00
CPCG01R31/00G01R19/165G01M99/00H02M7/00H02J3/381H02J3/48G06F17/142H02J2300/28Y02E10/76
Inventor 何廷一李胜男吴水军
Owner YUNNAN POWER GRID CO LTD ELECTRIC POWER RES INST
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