High voltage frequency converter power unit remote fault diagnosis system

A technology of fault diagnosis system and high-voltage inverter, which is applied in the direction of instruments, measuring electric variables, measuring devices, etc., to achieve the effects of ensuring communication, saving time and cost, and improving resource utilization

Active Publication Date: 2016-12-07
广源动力(武汉)科技股份有限公司
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Problems solved by technology

[0004] Aiming at the defects and deficiencies of the existing technology, the present invention provides a remote fault diagnosis system for the power unit of the high-voltage fr

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  • High voltage frequency converter power unit remote fault diagnosis system
  • High voltage frequency converter power unit remote fault diagnosis system
  • High voltage frequency converter power unit remote fault diagnosis system

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[0036] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention. In addition, the technical features involved in the various embodiments of the present invention described below can be combined with each other as long as they do not constitute a conflict with each other.

[0037] like figure 2 As shown, the present invention provides a remote fault diagnosis system for a power unit of a high-voltage frequency converter, which is applied to the remote diagnosis of a faulty power unit of a chain-type high-voltage frequency converter, including an on-site acquisition system 2, a data transmission system 3 and a background diagnosis system 4 ,in:

[0038] The on-si...

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Abstract

The invention belongs to the technical field of power electronic diagnosis and discloses a high voltage frequency converter power unit remote fault diagnosis method. The system comprises a field acquisition system for sending collected test data to a background diagnosis system and receiving the fault information of a failed system obtained by a background diagnosis system according to the test data diagnosis, a data transmission system used for realizing the data exchange between the field acquisition system and the background diagnosis system, the background diagnosis system for carrying out processing and diagnosis according to the test data and then obtaining the fault information of the failed system, and sending the fault information to the field acquisition system, wherein the failed system is a failed power unit in the chain structure high voltage inverter. According to the system, the remote diagnosis can be realized, the background diagnosis system can be fully used, a field problem is rapidly analyzed and on-site equipment maintenance is guided, the time and cost of the equipment maintenance are saved, the sharing of resources is realized, and the utilization rate of the resources is improved.

Description

technical field [0001] The invention belongs to the technical field of power electronics diagnosis, and more specifically relates to a remote fault diagnosis system for a power unit of a high-voltage frequency converter. Background technique [0002] Unit cascade type high-voltage inverter, such as figure 1 As shown, the three-phase output voltages U, V, and W are respectively obtained by superimposing the output voltages of multiple internal low-voltage power units Unit 1 to Unit N in series; since the potentials of the power units of the high-voltage inverter after series connection are accumulated to form a high potential, Ordinary testing equipment cannot achieve safe electrical isolation, and engineers cannot test and monitor its operation online, which brings a lot of inconvenience to the on-site testing of equipment. Therefore, the existing technology adopts the method of performing online test on each power unit separately, which mainly includes a single power unit ...

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Application Information

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IPC IPC(8): G01R31/00
CPCG01R31/00
Inventor 高目芳陈芳华龚洛弘夏超傅波宗捷
Owner 广源动力(武汉)科技股份有限公司
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