CN117590212A - User demarcation load switch testing method and device - Google Patents
User demarcation load switch testing method and device Download PDFInfo
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- CN117590212A CN117590212A CN202311469917.1A CN202311469917A CN117590212A CN 117590212 A CN117590212 A CN 117590212A CN 202311469917 A CN202311469917 A CN 202311469917A CN 117590212 A CN117590212 A CN 117590212A
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- 238000012360 testing method Methods 0.000 title claims abstract description 35
- 238000001514 detection method Methods 0.000 claims abstract description 38
- 239000004973 liquid crystal related substance Substances 0.000 claims abstract description 17
- 238000000034 method Methods 0.000 claims abstract description 4
- 230000005284 excitation Effects 0.000 claims description 5
- 238000007689 inspection Methods 0.000 abstract description 3
- 238000010586 diagram Methods 0.000 description 15
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000012544 monitoring process Methods 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/327—Testing of circuit interrupters, switches or circuit-breakers
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Abstract
The invention discloses a method and a device for testing a user demarcation load switch, relates to the technical field of power distribution automation, and solves the problems that a special testing tool for the user demarcation switch is lacking in the prior art, so that the user demarcation switch cannot be effectively tested before being installed, the user demarcation switch in operation cannot be subjected to fixed inspection, and further a user is out of order due to faults. According to the invention, various working conditions when the user demarcation switch operates are preset in the set control module, and then the output voltage and current are controlled to the user demarcation load switch controller through the preset various working conditions, after the action condition is met, a tripping signal is output to the user demarcation switch for tripping action, the control module receives the tripping action signal through the switching value input module, judges whether the detection result is correct or not, and displays the result on the liquid crystal display module. Therefore, the invention can efficiently test the equipment before the user demarcation switch is installed and check the user demarcation switch in operation.
Description
Technical Field
The invention relates to the technical field of power distribution automation, in particular to a user demarcation load switch testing method and device.
Background
Feeder automation is an integrated system for remote real-time monitoring, coordination and control of equipment on a distribution line, and is one of the main monitoring systems of distribution automation. Its main functions include: under normal conditions, the state of the switch and the current and voltage of a feeder line are monitored in real time, so that remote switching-on and switching-off operation of the switch is realized; when the power grid fails, a fault record is obtained rapidly, the section where the fault is located is judged and cut off automatically in the shortest time possible, and the power supply to the non-fault section is recovered, so that the power failure range and the power failure time influenced by the fault are reduced greatly.
Installing a user demarcation switch at a user title demarcation point is an effective means of preventing user failure to exit. At present, a special testing tool for a user demarcation switch is lacking, so that the user demarcation switch cannot be effectively tested before being installed, and the user demarcation switch in operation cannot be subjected to fixed inspection, so that a user fails to go out.
In view of this, a user demarcation load switch test method and apparatus are needed.
Disclosure of Invention
Aiming at the problems that a special testing tool for a user demarcation switch is lacking in the prior art, so that the user demarcation switch cannot be effectively tested before being installed, and the user demarcation switch in operation cannot be subjected to fixed inspection, and further a user is out of order, the invention provides a user demarcation load switch testing method and device. The specific technical scheme is as follows:
the user demarcation load switch testing device comprises a power management module, a current output module, a voltage output module, a switching value input module, a control module, a liquid crystal display module and a keyboard module;
the control module is respectively connected with the power management module, the current output module, the voltage output module, the switching value input module, the liquid crystal display module and the keyboard module, and the power management module is also connected with the current output module, the voltage output module and the switching value input module;
the control module is used for outputting voltage and current by the voltage output module and the current output module, the switching value input module is used for receiving a tripping action signal so as to judge whether a detection result is correct, and the liquid crystal display module is used for displaying the detection result; the keyboard module is used for typing in detection items set by a tester.
Preferably, the power management module comprises an alternating current input interface and two direct current output interfaces, wherein rated voltage of the alternating current input interface is 220V, one of the two direct current output interfaces is 24V, and the other is 220V.
Preferably, the voltage output module is used for outputting an alternating line voltage UAB, and the rated value of the line voltage UAB is alternating 220V, and the rated capacity is 300VA.
Preferably, the current output module outputs three line currents IA, IB, IC.
Preferably, the current output module outputs a zero sequence current I0.
Preferably, a voltage and current state sequence is preset in the control module according to detection items, the voltage and current state sequence comprises an in-boundary AB phase short-circuit fault, a BC phase short-circuit fault, a CA phase short-circuit fault, an ABC phase short-circuit fault, a grounding fault and an excitation surge current detection state sequence, an out-of-boundary AB phase short-circuit fault, a BC phase short-circuit fault, a CA phase short-circuit fault, an ABC phase short-circuit fault and a grounding fault detection state sequence, and the control module can receive the detection items set by a tester through a keyboard. When the control module works, the voltage output module and the current output module are controlled according to a voltage and current state sequence preset by a detection item, voltage and current are output to the user demarcation load switch controller, a tripping signal is output to the user demarcation switch for tripping operation after an action condition is met, the control module receives the tripping action signal through the switching value input module, whether a detection result is correct or not is judged, and the result is displayed on the liquid crystal display module.
A user demarcation load switch test, for use in a method as described above, comprising the steps of:
s1: receiving detection items set by a tester through a keyboard;
s2: the control module controls the voltage output module and the current output module according to a voltage and current state sequence preset by the detection item, and outputs voltage and current to the user demarcation load switch controller;
s3: after the action condition, the user demarcation load switch controller outputs a tripping signal to the user demarcation switch to trip;
s4: the control module receives the tripping action signal through the switching value input module and judges whether the detection result is correct or not;
s5: and displaying the detection result obtained in the step S4 in a liquid crystal display module.
Compared with the prior art, the invention has the beneficial effects that:
the invention presets various working conditions when the user demarcation switch operates in the set control module, and further controls the voltage output module and the current output module through the preset various working conditions, outputs voltage and current to the user demarcation load switch controller, outputs a tripping signal to the tripping action of the user demarcation switch after reaching the action condition, and the control module receives the tripping action signal through the switching value input module, judges whether the detection result is correct or not and displays the result on the liquid crystal display module. Therefore, the invention can efficiently test the equipment before the user demarcation switch is installed and check the user demarcation switch in operation.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below. Like elements or portions are generally identified by like reference numerals throughout the several figures. In the drawings, elements or portions thereof are not necessarily drawn to scale.
FIG. 1 is a schematic diagram of the overall structure of the present invention;
FIG. 2 is a schematic diagram of an in-boundary AB phase short-circuit fault test state sequence according to the present invention;
FIG. 3 is a schematic diagram of a sequence of state sequences for testing the internal BC phase short-circuit fault in the present invention;
FIG. 4 is a schematic diagram of an in-bound CA phase short circuit fault test state sequence according to the present invention;
FIG. 5 is a schematic diagram of an internal ABC phase short circuit fault test state sequence according to the present invention;
FIG. 6 is a schematic diagram of an in-bound earth fault test state sequence according to the present invention;
FIG. 7 is a schematic diagram of a sequence of excitation surge testing conditions according to the present invention;
FIG. 8 is a schematic diagram of an out-of-bound fault test state sequence according to the present invention.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are some, but not all embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
It should be understood that the terms "comprises" and "comprising," when used in this specification and the appended claims, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof.
It is also to be understood that the terminology used in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used in this specification and the appended claims, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise.
It should be further understood that the term "and/or" as used in the present specification and the appended claims refers to any and all possible combinations of one or more of the associated listed items, and includes such combinations.
Embodiments of the present invention are further described below in conjunction with fig. 1-8.
The embodiment provides a user demarcation load switch testing device, which is shown in fig. 1 and comprises a power management module, a current output module, a voltage output module, a switching value input module, a control module, a liquid crystal display module and a keyboard module;
the control module is respectively connected with the power management module, the current output module, the voltage output module, the switching value input module, the liquid crystal display module and the keyboard module, and the power management module is also connected with the current output module, the voltage output module and the switching value input module;
the current output module is used for receiving signals of the control module so as to output current, the voltage output module is used for receiving signals of the control module so as to output voltage, the control module is used for controlling the voltage output module and the current output module to output voltage and current, the switching value input module is used for receiving tripping action signals so as to judge whether a detection result is correct, and the liquid crystal display module is used for displaying the detection result; the keyboard module is used for typing in detection items set by a tester.
Specifically, the power management module comprises an alternating current input interface and two direct current output interfaces, wherein rated voltage of the alternating current input interface is 220V, one of the two direct current output interfaces is 24V, and the other is 220V. The voltage output module is used for outputting an alternating line voltage UAB, the rated value of the line voltage UAB is alternating 220V, and the rated capacity is 300VA. The current output module can output 3 paths of alternating current line currents IA, IB and IC and can output 1 path of zero sequence current I, and the rated value of the alternating current line current is alternating current 10A, and the rated capacity is 30VA.
As shown in fig. 2-8, fig. 2 is an intra-boundary AB phase short-circuit fault test state sequence diagram, fig. 3 is an intra-boundary BC phase short-circuit fault test state sequence diagram, fig. 4 is an intra-boundary CA phase short-circuit fault test state sequence diagram, fig. 5 is an intra-boundary ABC phase short-circuit fault test state sequence diagram, fig. 6 is an intra-boundary intra-circuit fault test state sequence diagram, fig. 7 is an excitation surge current test state sequence diagram, and fig. 8 is an out-of-boundary fault test state sequence diagram. The control module presets an in-boundary AB phase short circuit fault, a BC phase short circuit fault, a CA phase short circuit fault, an ABC phase short circuit fault, a ground fault and an excitation surge current detection state sequence, an out-of-boundary fault detection state sequence can be received through a keyboard, detection items set by a tester can be received, the control module controls the voltage output module and the current output module according to the voltage and current state sequence preset by the detection items, voltage and current are output to the user demarcation load switch controller, a tripping signal is output to the user demarcation switch for tripping after an action condition is achieved, the control module receives the tripping action signal through the switching value input module, whether a detection result is correct or not is judged, and the result is displayed on the liquid crystal display module.
Another embodiment of the present invention provides a user demarcation load switch test, applied to a method as described above, comprising the steps of:
s1: receiving detection items set by a tester through a keyboard;
s2: the control module controls the voltage output module and the current output module according to a voltage and current state sequence preset by the detection item, and outputs voltage and current to the user demarcation load switch controller;
s3: after the action condition, the user demarcation load switch controller outputs a tripping signal to the user demarcation switch to trip;
s4: the control module receives the tripping action signal through the switching value input module and judges whether the detection result is correct or not;
s5: and displaying the detection result obtained in the step S4 in a liquid crystal display module.
In summary, the present invention presets various working conditions when the user demarcation switch operates in the set control module, and further controls the voltage output module and the current output module through the preset various working conditions, outputs the voltage and the current to the user demarcation load switch controller, outputs the trip signal to the user demarcation switch for tripping operation after reaching the action condition, and the control module receives the trip action signal through the switching value input module, judges whether the detection result is correct, and displays the result on the liquid crystal display module. Therefore, the invention can efficiently test the equipment before the user demarcation switch is installed and check the user demarcation switch in operation, and solves the problems in the background technology.
The foregoing description of specific exemplary embodiments of the invention has been presented for the purpose of illustration and description, but it is not intended to limit the invention to the precise form disclosed, and it is apparent that many changes and modifications may be made in accordance with the above teachings, and while embodiments of the invention have been shown and described, this specific embodiment is merely illustrative of the invention and not restrictive, the particular features, structures, materials, or characteristics described may be combined in any one or more embodiments or examples in a suitable manner, the exemplary embodiments being selected and described for the purpose of explaining the specific principles of the invention and its practical application, so that modifications, substitutions, variations, and various other changes may be made to the embodiments without creatively departing from the principles and spirit of the invention as desired by those skilled in the art without departing from the scope of the patent claims.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present invention, and not for limiting the same; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the invention, and are intended to be included within the scope of the appended claims and description.
Claims (7)
1. The user demarcation load switch testing device is characterized by comprising a power management module, a current output module, a voltage output module, a switching value input module, a control module, a liquid crystal display module and a keyboard module;
the control module is respectively connected with the power management module, the current output module, the voltage output module, the switching value input module, the liquid crystal display module and the keyboard module, and the power management module is also connected with the current output module, the voltage output module and the switching value input module;
the control module is used for controlling the voltage output module and the current output module to output voltage and current, the switching value input module is used for receiving tripping action signals so as to judge whether the detection result is correct, and the liquid crystal display module is used for displaying the detection result; the keyboard module is used for typing in detection items set by a tester.
2. The device for testing the user demarcation load switch according to claim 1, wherein the power management module comprises an alternating current input interface and two direct current output interfaces, the rated voltage of the alternating current input interface is 220V, one of the two direct current output interfaces is 24V, and the other is 220V.
3. The device according to claim 1, wherein the voltage output module is configured to output an ac line voltage UAB, and the line voltage UAB has a rated value of 220V, and a rated capacity of 300VA.
4. The user demarcation load switch test device of claim 1, wherein the current output module outputs three-way line currents IA, IB, IC.
5. The device for testing the user demarcation load switch according to claim 1, wherein the current output module outputs a zero sequence current I0.
6. The user demarcation load switch test device of claim 1, wherein a voltage and current state sequence is preset in the control module according to a detection item, and the voltage and current state sequence comprises an intra-phase AB phase short-circuit fault, a BC phase short-circuit fault, a CA phase short-circuit fault, an ABC phase short-circuit fault, a ground fault, an excitation inrush current detection state sequence, an extra-phase AB phase short-circuit fault, a BC phase short-circuit fault, a CA phase short-circuit fault, an ABC phase short-circuit fault, and a ground fault detection state sequence.
7. A method for testing a user demarcation load switch, applied to the device of any one of claims 1 to 6, comprising the steps of:
s1: receiving detection items set by a tester through a keyboard;
s2: the control module controls the voltage output module and the current output module according to a voltage and current state sequence preset by the detection item, and outputs voltage and current to the user demarcation load switch controller;
s3: after the action condition, the user demarcation load switch controller outputs a tripping signal to the user demarcation switch to trip;
s4: the control module receives the tripping action signal through the switching value input module and judges whether the detection result is correct or not;
s5: and displaying the detection result obtained in the step S4 in a liquid crystal display module.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311469917.1A CN117590212A (en) | 2023-11-07 | 2023-11-07 | User demarcation load switch testing method and device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311469917.1A CN117590212A (en) | 2023-11-07 | 2023-11-07 | User demarcation load switch testing method and device |
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| CN117590212A true CN117590212A (en) | 2024-02-23 |
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| CN202311469917.1A Pending CN117590212A (en) | 2023-11-07 | 2023-11-07 | User demarcation load switch testing method and device |
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| CN (1) | CN117590212A (en) |
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- 2023-11-07 CN CN202311469917.1A patent/CN117590212A/en active Pending
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