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Fault generation system based on analog quantity

A technology for fault occurrence and simulation, which is applied in the direction of measuring electricity, measuring devices, measuring electrical variables, etc. It can solve the problems of low efficiency and incompleteness of fault simulation, and achieve the effect of saving test space and cost, convenient operation and flexible operation.

Inactive Publication Date: 2010-08-11
SHANGHAI STEP ELECTRIC +1
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  • Description
  • Claims
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Problems solved by technology

[0003] The technical problem to be solved by the present invention is to overcome the defects of low efficiency and incomplete fault simulation in the existing development and debugging process, and provide an analog-based fault occurrence system that is efficient and can truly verify all protection functions

Method used

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  • Fault generation system based on analog quantity
  • Fault generation system based on analog quantity
  • Fault generation system based on analog quantity

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Embodiment Construction

[0017] The preferred embodiments of the present invention are given below in conjunction with the accompanying drawings to describe the technical solution of the present invention in detail.

[0018] like figure 1 and figure 2 As shown, the present invention proposes a general and effective fault occurrence system based on various input and output analog quantities. The system can generate phase loss, three-phase unbalance, overvoltage, etc. through D / A output according to user settings. , overcurrent, input undervoltage, output open circuit, grounding and other faults. In addition, the system can also convert the waveform image files recorded by the oscilloscope into waveform data, and generate waveforms consistent with the images, which is convenient for reproducing real on-site conditions. The system of the present invention includes the following parts electrically connected in sequence: a fault generator module, a D / A output module, a communication module, a man-machine...

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Abstract

The invention discloses a fault generation system based on analog quantity, which can simulate fault generation through digital-analog conversion output based on the set of a user. The fault generation system at least comprises a fault generator module, a digital-analog conversion output module, a communication module and a man-machine interface module, wherein the fault generator module, the digital-analog conversion output module, the communication module and the man-machine interface module are sequentially and electrically connected. The system is safe, has high efficiency, can generate faults of phase failure, three unbalanced phases, overvoltage, overcurrent, input undervoltage, output open circuit, grounding and the like through digital-analog conversion output based on the set of the user, also convert a waveform picture file recorded by an oscilloscope to waveform data, and generate a waveform which is consistent with an image, thereby being convenient to reappear the real field condition.

Description

technical field [0001] The invention relates to a debugging technology, in particular to a fault generation system based on analog quantities. Background technique [0002] In the process of developing and debugging devices such as frequency converters, the non-default link is the fault protection of the input and output sides. In most cases, the fault protection modules of such devices are manually verified before commissioning at high voltage. Whether it is correct, and this type of method is not efficient, and it is easy to make it impossible to fully and truly verify all protection functions. Therefore, if there is a set that can effectively simulate these faults and can be directly connected to the frequency converter, the frequency converter can be debugged and developed with half the effort. Based on this background, this patent proposes such a frequency converter debugging technology and a fault occurrence system . In addition, this system can also be used for othe...

Claims

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Application Information

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IPC IPC(8): G01R31/00
Inventor 李兴鹤宋吉波吴芸马艳玲邢辉李唯为
Owner SHANGHAI STEP ELECTRIC
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