CN112269138A - Calibration equipment for automatic power supply switching device - Google Patents
Calibration equipment for automatic power supply switching device Download PDFInfo
- Publication number
- CN112269138A CN112269138A CN202011280357.1A CN202011280357A CN112269138A CN 112269138 A CN112269138 A CN 112269138A CN 202011280357 A CN202011280357 A CN 202011280357A CN 112269138 A CN112269138 A CN 112269138A
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- phase
- line wiring
- outgoing line
- wiring terminal
- terminal
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- 230000001419 dependent effect Effects 0.000 claims abstract description 13
- 239000003990 capacitor Substances 0.000 claims abstract description 10
- 238000003491 array Methods 0.000 claims abstract description 8
- 238000004804 winding Methods 0.000 claims abstract description 8
- 238000001514 detection method Methods 0.000 abstract description 10
- 238000000034 method Methods 0.000 abstract description 3
- 230000000694 effects Effects 0.000 description 4
- 238000002474 experimental method Methods 0.000 description 3
- 238000012360 testing method Methods 0.000 description 2
- 238000012795 verification Methods 0.000 description 2
- 206010015856 Extrasystoles Diseases 0.000 description 1
- 230000005856 abnormality Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000012937 correction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
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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
- G01R31/40—Testing power supplies
- G01R31/42—AC power supplies
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J9/00—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting
- H02J9/04—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source
- H02J9/06—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems
- H02J9/062—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems for AC powered loads
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Supply And Distribution Of Alternating Current (AREA)
Abstract
The invention discloses a calibration device for an automatic power switching device, and belongs to the technical field of electrical equipment calibration instruments. The three-phase lead-in wiring terminal comprises a three-phase lead-out wiring terminal, a piezoresistor array, a triple selection switch, a filter capacitor, a three-phase voltmeter, a current transformer and an electric contact timer; a group of voltage dependent resistor arrays and a filter capacitor are sequentially connected in series between each pair of incoming line connecting terminals and outgoing line connecting terminals, wherein each group of voltage dependent resistor arrays is formed by connecting 15 voltage dependent resistors with 10V action voltage in series; the signal input end of the three-phase voltmeter is respectively connected with 3 outgoing line wiring terminals of the three-phase outgoing line wiring terminal; and a primary winding of the current transformer is connected in series with a three-phase incoming line connecting terminal or a three-phase outgoing line connecting terminal of any phase, and a secondary winding of the current transformer is connected with a signal input end of the electric contact timer. The method has the advantages of quick detection without disconnecting, no need of an additional power supply and low cost.
Description
Technical Field
The invention relates to a calibration device of an automatic power switching device, belonging to the technical field of electrical equipment calibration instruments.
Background
The automatic power switching device is also called as spare power automatic switching equipment and is widely applied to important power supply occasions such as a power plant and the like. The equipment is input by two paths of power supplies, and once one path of power supply loses power or voltage fluctuates, the other path of power supply can be automatically switched to and supplies power to a lower-stage load. However, the operating conditions of such devices have not been verified in an intuitive manner, and how to efficiently detect the switching capability thereof to cope with the power supply abnormality in the field has been a problem.
The existing verification mode generally adopts the mode of pulling a group of power circuit breakers open to test whether the power circuit breakers can be matched with another group of power supply. However, real power failures tend to be much more complex, for example: power supply phase loss, low voltage, etc., and whether the automatic power switching device can operate correctly or not is questionable. In addition, if the power supply is disturbed only for tens of milliseconds instantaneously and the automatic power supply switching device does not operate, the characteristic is difficult to verify, although the verification can be realized by using a relay protection calibrator, disconnection is required, the equipment is large in size and inconvenient to use, and the method is not completely applicable to the occasion of using a large number of power supply switching devices. Therefore, an instrument for rapidly and efficiently detecting the characteristics of a power switching device without disconnecting the power switching device has been developed, which can solve the above problems.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: the utility model provides a power automatic switching control equipment check-up equipment, it has solved the problem through the high efficiency detection power switching control equipment characteristic of the mode of not taking out stitches.
The technical problem to be solved by the invention is realized by adopting the following technical scheme:
a kind of power automatic switching device calibration equipment, it includes three-phase incoming line binding post, three-phase outgoing line binding post, varistor array, triple selective switch, filter capacitor, three-phase voltmeter, current transformer, electric contact timer;
the three-phase incoming line wiring terminal is provided with 3 incoming line wiring terminals, the three-phase outgoing line wiring terminal is provided with 3 outgoing line wiring terminals matched with the incoming line wiring terminals, a group of voltage dependent resistor arrays and a filter capacitor are sequentially connected in series between each pair of incoming line wiring terminals and each outgoing line wiring terminal, and each group of voltage dependent resistor arrays is formed by connecting 15 voltage dependent resistors with action voltage of 10V in series;
each triple selection switch is composed of 15 fixed contacts and 1 movable contact, the 15 fixed contacts of the triple selection switch are respectively connected with the wire outlet ends of the 15 piezoresistors of the piezoresistor array, and the movable contact of the triple selection switch is connected with the wire inlet connecting terminal of the corresponding phase wire;
the signal input end of the three-phase voltmeter is respectively connected with 3 outgoing line wiring terminals of the three-phase outgoing line wiring terminal;
and a primary winding of the current transformer is connected in series with a three-phase incoming line connecting terminal or a three-phase outgoing line connecting terminal of any phase, and a secondary winding of the current transformer is connected with a signal input end of the electric contact timer.
As a preferred example, the ends of the three-phase incoming line terminal and the three-phase outgoing line terminal are respectively provided with a magnet.
The invention has the beneficial effects that:
(1) has the advantages of quick detection without taking out stitches: the device breaks through the experimental mode of the conventional relay protection calibrator, directly utilizes the voltage of a system power supply to carry out an experiment, reduces the voltage of the system through the cooperation of the voltage dependent resistor array and the triple selection switch, simulates different low voltage or power failure faults, and simultaneously skillfully cooperates with the existing superior power switch, so that the capability of a power switching device can be tested without disassembling a line, which can not be realized in the prior art, and the detection efficiency is greatly reduced compared with the time consumption in the prior art;
(2) no extra power supply is required: the existing power equipment detection instruments all need external power supplies, and the equipment directly utilizes a system power supply, so that the inconvenience of an external power supply is overcome, and the field operation efficiency is further improved;
(3) the cost is low: the existing instrument can achieve the purpose that three-phase voltages can be set respectively, so that the effect of checking the power switching device is achieved, the three-phase relay protection checking instrument needs to be used, the equipment is high in price, and the equipment is low in cost due to the fact that the equipment is a passive device under the condition that the same detection effect is achieved, and therefore the use cost is greatly reduced.
Drawings
FIG. 1 is a schematic structural diagram of the present invention.
In the figure: the three-phase lead-in wiring terminal comprises a three-phase lead-out wiring terminal 1, a three-phase lead-out wiring terminal 2, a piezoresistor array 3, a triple selection switch 4, a filter capacitor 5, a three-phase voltmeter 6, a current transformer 7 and an electric contact timer 8.
Detailed Description
In order to make the technical means, the original characteristics, the achieved purpose and the efficacy of the invention easy to understand, the invention is further described with reference to the specific drawings.
As shown in fig. 1, a calibration device for an automatic power switching device comprises a three-phase incoming line connection terminal 1, a three-phase outgoing line connection terminal 2, a piezoresistor array 3, a triple selection switch 4, a filter capacitor 5, a three-phase voltmeter 6, a current transformer 7 and an electric contact timer 8;
the three-phase incoming line wiring terminal 1 is provided with 3 incoming line wiring terminals, the three-phase outgoing line wiring terminal 2 is provided with 3 outgoing line wiring terminals matched with the incoming line wiring terminals, a group of voltage dependent resistor arrays 3 and a filter capacitor 5 are sequentially connected in series between each pair of incoming line wiring terminals and outgoing line wiring terminals, wherein each group of voltage dependent resistor arrays 3 is formed by connecting 15 voltage dependent resistors with action voltage of 10V in series;
each pair of the triple selection switch 4 consists of 15 fixed contacts and 1 movable contact, the 15 fixed contacts of the triple selection switch 4 are respectively connected with the wire outlet ends of the 15 piezoresistors of the piezoresistor array 3, and the movable contact of the triple selection switch 4 is connected with the wire inlet connecting terminal of the corresponding phase wire;
the signal input end of the three-phase voltmeter 6 is respectively connected with 3 outgoing line wiring terminals of the three-phase outgoing line wiring terminal 2;
the primary winding of the current transformer 7 is connected in series with the three-phase incoming line connecting terminal 1 or the three-phase outgoing line connecting terminal 2 of any phase, and the secondary winding of the current transformer 7 is connected with the signal input end of the electric contact timer 8.
The ends of the three-phase incoming line wiring terminal 1 and the three-phase outgoing line wiring terminal 2 are respectively provided with a magnet. The magnet is convenient for connecting the equipment with the three-phase input and output terminal of the superior power switch.
The working principle is as follows: the experiment mode of breaking through conventional relay protection check gauge directly utilizes the voltage of system's power to experiment, and piezo-resistor array 3 has different voltage drops, through the switching of trigeminy selection switch 4, can produce different output voltage, and filter capacitor 5 cooperates with it, can correct the distortion waveform after the piezo-resistor voltage drop into the sine wave, and this is in fact the step-down that realizes system's voltage through the voltage drop method, simulates different low-voltage or lose the electric trouble. When the device is used, the 6 wiring terminals for incoming and outgoing lines are directly connected with the three-phase input and output terminal of the superior power switch through the magnet, then the switch at the position is pulled, and the voltage applied to the power switching device is changed from the three-phase normal voltage into the three-phase low voltage which can be respectively adjusted, so that whether the action behavior of the device is normal or not is judged under various fault working conditions. The capability of the power supply switching device can be completely checked on line without detaching one line, which can not be realized by the prior art, so that the detection efficiency and the time consumption are greatly reduced compared with the prior art.
During detection, the action behavior of the power supply switching device can be further accurately detected through the correction of the reading of the three-phase voltmeter 6, and the electric contact counter 8 can test the accumulated time of the current of the switching device, so that whether the action time characteristic of the power supply switching device meets the requirement or not can be further tested.
Furthermore, as can be seen from fig. 1, it is a smart passive device that operates without an additional power source. The existing power equipment detection instrument needs an external power supply, and the equipment directly utilizes a system power supply, so that the inconvenience of an external power supply is overcome, and the field operation efficiency is further improved. Still realized cheap cost, current instrument will reach the purpose that three-phase voltage can set up respectively to reach the effect to the power switching device check-up, just need use three-phase relay protection check-up appearance, this kind of equipment is high (market price is about several ten thousand yuan), and this equipment is under the condition of realizing same detection effect, because it is passive device, and the components and parts cost is lower (about several hundred yuan), thereby use cost has been reduced by a wide margin.
The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and that various changes and modifications may be made without departing from the spirit and scope of the invention as defined in the appended claims. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (2)
1. A power supply automatic switching device calibration device is characterized by comprising a three-phase incoming line wiring terminal (1), a three-phase outgoing line wiring terminal (2), a piezoresistor array (3), a triple selection switch (4), a filter capacitor (5), a three-phase voltmeter (6), a current transformer (7) and an electric contact timer (8);
the three-phase incoming line wiring terminal (1) is provided with 3 incoming line wiring terminals, the three-phase outgoing line wiring terminal (2) is provided with 3 outgoing line wiring terminals matched with the incoming line wiring terminals, a group of voltage dependent resistor arrays (3) and a filter capacitor (5) are sequentially connected in series between each pair of incoming line wiring terminals and outgoing line wiring terminals, and each group of voltage dependent resistor arrays (3) is formed by connecting 15 voltage dependent resistors with action voltage of 10V in series;
each pair of the triple selection switch (4) is composed of 15 fixed contacts and 1 movable contact, the 15 fixed contacts of the triple selection switch (4) are respectively connected with the wire outlet ends of the 15 piezoresistors of the piezoresistor array (3), and the movable contact of the triple selection switch (4) is connected with the wire inlet wiring terminal of the corresponding phase wire;
the signal input end of the three-phase voltmeter (6) is respectively connected with the 3 outgoing line wiring terminals of the three-phase outgoing line wiring terminal (2);
and a primary winding of the current transformer (7) is connected in series with the three-phase incoming line wiring terminal (1) or the three-phase outgoing line wiring terminal (2) of any phase, and a secondary winding of the current transformer (7) is connected with a signal input end of the electric contact timer (8).
2. The calibration equipment for the automatic power switching device according to claim 1, wherein the ends of the three-phase incoming line connection terminal (1) and the three-phase outgoing line connection terminal (2) are respectively provided with a magnet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011280357.1A CN112269138A (en) | 2020-11-16 | 2020-11-16 | Calibration equipment for automatic power supply switching device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011280357.1A CN112269138A (en) | 2020-11-16 | 2020-11-16 | Calibration equipment for automatic power supply switching device |
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| Publication Number | Publication Date |
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| CN112269138A true CN112269138A (en) | 2021-01-26 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202011280357.1A Pending CN112269138A (en) | 2020-11-16 | 2020-11-16 | Calibration equipment for automatic power supply switching device |
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| CN (1) | CN112269138A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116774029A (en) * | 2023-06-09 | 2023-09-19 | 国网上海市电力公司 | Multifunctional relay protection calibrator without disconnecting |
-
2020
- 2020-11-16 CN CN202011280357.1A patent/CN112269138A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116774029A (en) * | 2023-06-09 | 2023-09-19 | 国网上海市电力公司 | Multifunctional relay protection calibrator without disconnecting |
| CN116774029B (en) * | 2023-06-09 | 2024-06-04 | 国网上海市电力公司 | Multifunctional relay protection calibrator without disconnecting |
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