CN114814701A - Fault simulation system of all-fiber current transformer - Google Patents
Fault simulation system of all-fiber current transformer Download PDFInfo
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- CN114814701A CN114814701A CN202111363373.1A CN202111363373A CN114814701A CN 114814701 A CN114814701 A CN 114814701A CN 202111363373 A CN202111363373 A CN 202111363373A CN 114814701 A CN114814701 A CN 114814701A
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- current transformer
- fiber current
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R35/00—Testing or calibrating of apparatus covered by the other groups of this subclass
- G01R35/02—Testing or calibrating of apparatus covered by the other groups of this subclass of auxiliary devices, e.g. of instrument transformers according to prescribed transformation ratio, phase angle, or wattage rating
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Abstract
The invention discloses a fault simulation system of an all-fiber current transformer, and belongs to the technical field of power detection. The system of the invention comprises: the optical path fault simulation loop is connected with an optical loop of the all-fiber current transformer, adjusts parameters of the optical loop and simulates working conditions of optical loop faults; and the circuit fault simulation loop is connected with the electric loop of the all-fiber current transformer, generates a voltage signal to drive the electric loop of the all-fiber current transformer, and performs working condition simulation of the electric loop fault. The system of the invention realizes the effect of simulating the change of the optical path and the circuit performance parameters of the all-fiber current transformer by adding fault simulation equipment on the optical path, the circuit and other physical structures on the basis of the principle and the structural characteristics of the all-fiber current transformer and on the basis of the primary body and the electronic unit case of the all-fiber current transformer.
Description
Technical Field
The invention relates to the technical field of power detection, in particular to a fault simulation system of an all-fiber current transformer.
Background
The all-fiber current transformer provides key equipment for measurement, control and protection for the high-voltage direct-current system, and the stability and reliability of the all-fiber current transformer directly influence the safe and reliable operation of the high-voltage converter station.
The all-fiber current transformer consists of a complex optical circuit and an electrical circuit, and the problems that the faults of the optical circuit and the electrical circuit are difficult to reproduce and the fault reason is difficult to find exist in the actual operation are solved. In the existing fault processing process, judgment is mainly carried out according to the previous fault characteristics of products with the same type, and the problems of unclear fault mechanism, difficulty in fault positioning and fault classification and the like exist.
The existing detection method for the all-fiber current transformer mainly carries out research on the angles of measurement precision, insulation, temperature rise and the like, does not deeply research the corresponding relation between an internal optical loop, an internal electric loop and a fault, and cannot effectively support the fault mechanism analysis and hidden danger investigation of the all-fiber current transformer.
Disclosure of Invention
The invention aims to realize the fault simulation of all-fiber current transformer circuits and light paths under test conditions, and provides a fault simulation system of an all-fiber current transformer, which comprises the following components:
the optical path fault simulation unit is used for simulating the optical path fault, connecting the optical circuit of the all-fiber current transformer, adjusting the parameters of the optical circuit and simulating the working condition of the optical circuit fault;
and the circuit fault simulation unit is connected with the circuit of the all-fiber current transformer, generates a voltage signal to drive the circuit of the all-fiber current transformer, and simulates the working condition of the circuit fault.
Optionally, the optical path fault simulation circuit includes:
an LED light source outputting an optical signal;
the optical coupler splits the optical signal, outputs a light intensity signal to the optical loop and monitors the characteristic parameter of the optical loop; the characteristic parameter is used for evaluating the state of the optical circuit;
the optical power meter is used for calculating a light intensity signal output by the optical coupler;
the optical attenuator continuously adjusts the loss of the optical path fault simulation loop, and simulates the change of the loss characteristic of the optical loop and the failure of the optical path;
the photoelectric converter is used for converting the light intensity signal returned by the optical loop into an analog signal;
the acquisition card is used for converting the analog signals into digital signals;
and the upper computer receives the digital signal and determines the characteristic parameters of the optical circuit according to the digital signal.
Optionally, the fiber coupler is a 90:10 fiber coupler.
Optionally, the circuit fault simulation circuit includes:
the analog signal generator generates a voltage signal to drive an electric circuit of the all-fiber current transformer;
and the oscilloscope displays the circuit output.
Optionally, the amplitude and frequency of the voltage signal are adjustable.
The invention also provides a fault simulation method for the all-fiber current transformer, which comprises the following steps:
connecting the optical path fault simulation loop with an optical loop of the all-fiber current transformer, adjusting parameters of the optical loop through the optical path fault simulation loop, and simulating working conditions of optical loop faults;
and connecting the circuit fault simulation loop with the electric loop of the all-fiber current transformer, and generating a voltage signal through the circuit fault simulation loop to drive the electric loop of the all-fiber current transformer so as to simulate the working condition of the electric loop fault.
The system of the invention realizes the effect of simulating the change of the optical path and the circuit performance parameters of the all-fiber current transformer by adding fault simulation equipment on the optical path, the circuit and other physical structures on the basis of the principle and the structural characteristics of the all-fiber current transformer and on the basis of the primary body and the electronic unit case of the all-fiber current transformer.
Drawings
FIG. 1 is a block diagram of the system of the present invention;
FIG. 2 is a flow chart of the method of the present invention.
Detailed Description
The exemplary embodiments of the present invention will now be described with reference to the accompanying drawings, however, the present invention may be embodied in many different forms and is not limited to the embodiments described herein, which are provided for complete and complete disclosure of the present invention and to fully convey the scope of the present invention to those skilled in the art. The terminology used in the exemplary embodiments illustrated in the accompanying drawings is not intended to be limiting of the invention. In the drawings, the same units/elements are denoted by the same reference numerals.
Unless otherwise defined, terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. Further, it will be understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the relevant art and will not be interpreted in an idealized or overly formal sense.
The invention provides a fault simulation system of an all-fiber current transformer, as shown in fig. 1, comprising:
the optical path fault simulation unit is used for simulating the optical path fault, connecting the optical circuit of the all-fiber current transformer, adjusting the parameters of the optical circuit and simulating the working condition of the optical circuit fault;
and the circuit fault simulation unit is connected with the circuit of the all-fiber current transformer, generates a voltage signal to drive the circuit of the all-fiber current transformer, and simulates the working condition of the circuit fault.
The optical path fault simulation circuit of the all-fiber current transformer is connected with the input end of the optical circuit of the all-fiber current transformer, and fault simulation can be carried out on the optical circuit of the all-fiber current transformer by changing the parameters of the optical circuit.
Wherein, light path fault simulation circuit includes:
an LED light source outputting an optical signal;
the optical coupler splits the optical signal, outputs a light intensity signal to the optical loop and monitors the characteristic parameter of the optical loop; the characteristic parameter is used for evaluating the state of the optical circuit;
the optical power meter is used for calculating a light intensity signal output by the optical coupler;
the optical attenuator continuously adjusts the loss of the optical path fault simulation loop, and simulates the change of the loss characteristic of the optical loop and the failure of the optical path;
the photoelectric converter is used for converting the light intensity signal returned by the optical loop into an analog signal;
the acquisition card is used for converting the analog signals into digital signals;
and the upper computer receives the digital signal and determines the characteristic parameters of the optical circuit according to the digital signal.
Wherein the optical fiber coupler is a 90:10 optical fiber coupler.
Wherein, circuit fault analog circuit includes:
the analog signal generator generates a voltage signal to drive an electric circuit of the all-fiber current transformer;
and the oscilloscope displays the circuit output.
Wherein, the amplitude and the frequency of the voltage signal are adjustable.
The invention also provides a fault simulation method for the all-fiber current transformer, which comprises the following steps:
connecting the optical path fault simulation loop with an optical loop of the all-fiber current transformer, adjusting parameters of the optical loop through the optical path fault simulation loop, and simulating working conditions of optical loop faults;
and connecting the circuit fault simulation loop with the electric loop of the all-fiber current transformer, and generating a voltage signal through the circuit fault simulation loop to drive the electric loop of the all-fiber current transformer so as to simulate the working condition of the electric loop fault.
The system of the invention realizes the effect of simulating the change of the optical path and the circuit performance parameters of the all-fiber current transformer by adding fault simulation equipment on the optical path, the circuit and other physical structures on the basis of the principle and the structural characteristics of the all-fiber current transformer and on the basis of the primary body and the electronic unit case of the all-fiber current transformer.
As will be appreciated by one skilled in the art, embodiments of the present invention may be provided as a method, system, or computer program product. Accordingly, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present invention may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein. The scheme in the embodiment of the invention can be realized by adopting various computer languages, such as object-oriented programming language Java and transliterated scripting language JavaScript.
The present invention is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the invention. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
While preferred embodiments of the present invention have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. Therefore, it is intended that the appended claims be interpreted as including preferred embodiments and all such alterations and modifications as fall within the scope of the invention.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.
Claims (6)
1. A fault simulation system for an all-fiber current transformer, the system comprising:
the optical path fault simulation loop is connected with an optical loop of the all-fiber current transformer, adjusts parameters of the optical loop and simulates working conditions of optical loop faults;
and the circuit fault simulation loop is connected with the electric loop of the all-fiber current transformer, generates a voltage signal to drive the electric loop of the all-fiber current transformer, and simulates the working condition of the electric loop fault.
2. The system of claim 1, the optical path fault simulation loop, comprising:
an LED light source outputting a light signal;
the optical coupler splits the optical signal, outputs a light intensity signal to the optical loop and monitors the characteristic parameter of the optical loop; the characteristic parameter is used for evaluating the state of the optical circuit;
the optical power meter is used for calculating a light intensity signal output by the optical coupler;
the optical attenuator continuously adjusts the loss of the optical path fault simulation loop, and simulates the change of the loss characteristic of the optical loop and the failure of the optical path;
the photoelectric converter is used for converting the light intensity signal returned by the optical loop into an analog signal;
the acquisition card is used for converting the analog signals into digital signals;
and the upper computer receives the digital signal and determines the characteristic parameters of the optical circuit according to the digital signal.
3. The system of claim 2, the fiber optic coupler being a 90:10 fiber optic coupler.
4. The system of claim 1, the circuit fault simulation loop, comprising:
the analog signal generator generates a voltage signal to drive an electric circuit of the all-fiber current transformer;
and the oscilloscope displays the circuit output.
5. The system of claim 4, the voltage signal being adjustable in amplitude and frequency.
6. A method of fault simulation of an all-fiber current transformer using the system of any of claims 1-5, the method comprising:
connecting the optical path fault simulation loop with an optical loop of the all-fiber current transformer, adjusting parameters of the optical loop through the optical path fault simulation loop, and simulating working conditions of optical loop faults;
and connecting the circuit fault simulation loop with the electric loop of the all-fiber current transformer, and generating a voltage signal through the circuit fault simulation loop to drive the electric loop of the all-fiber current transformer so as to simulate the working condition of the electric loop fault.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111363373.1A CN114814701A (en) | 2021-11-17 | 2021-11-17 | Fault simulation system of all-fiber current transformer |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111363373.1A CN114814701A (en) | 2021-11-17 | 2021-11-17 | Fault simulation system of all-fiber current transformer |
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| Publication Number | Publication Date |
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| CN114814701A true CN114814701A (en) | 2022-07-29 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202111363373.1A Pending CN114814701A (en) | 2021-11-17 | 2021-11-17 | Fault simulation system of all-fiber current transformer |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115902755A (en) * | 2023-02-23 | 2023-04-04 | 国网江西省电力有限公司电力科学研究院 | Alarm parameter testing method for all-fiber current transformer |
-
2021
- 2021-11-17 CN CN202111363373.1A patent/CN114814701A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115902755A (en) * | 2023-02-23 | 2023-04-04 | 国网江西省电力有限公司电力科学研究院 | Alarm parameter testing method for all-fiber current transformer |
| CN115902755B (en) * | 2023-02-23 | 2023-08-15 | 国网江西省电力有限公司电力科学研究院 | Alarm parameter testing method for all-fiber current transformer |
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