CN112526382A - Testing device for rectifying module of pole-mounted circuit breaker - Google Patents
Testing device for rectifying module of pole-mounted circuit breaker Download PDFInfo
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- CN112526382A CN112526382A CN202011294101.6A CN202011294101A CN112526382A CN 112526382 A CN112526382 A CN 112526382A CN 202011294101 A CN202011294101 A CN 202011294101A CN 112526382 A CN112526382 A CN 112526382A
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- module
- rectifying
- circuit breaker
- rectifier
- voltage regulating
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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
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Abstract
The invention discloses a test device for a rectifying module of an on-pole circuit breaker, which comprises a voltage regulating module and a measuring module, wherein the voltage regulating module is connected with the measuring module through a voltage regulating circuit; the input end of the voltage regulating module is connected with a test power supply, the output end of the voltage regulating module is connected with the input end of the rectifying module, and the output end of the rectifying module is connected with the measuring module; the voltage regulating module is used for outputting adjustable voltage to the rectifying module; the measuring module is used for adjusting the operating power of the rectifying module to the rated power of the rectifying module and collecting the temperature difference of the rectifying module at n moments before and after the power is on under the rated power, wherein n is a preset time value. The advantages are that: the invention solves the problem that the rectifying module built in the pole circuit breaker in the prior art has no special test equipment, can play a role in measuring the rectifying modules with different output voltages and output powers, and has universality.
Description
Technical Field
The invention relates to a testing device for a rectifying module of an on-pole circuit breaker, and belongs to the technical field of electrical tests.
Background
With the development of intelligent power grids in China, the primary and secondary integration becomes the development trend of pole-mounted switch products. The primary switch device and the secondary control device are often in complete set and run cooperatively.
For the pole-mounted circuit breaker without an external voltage transformer, the power supply of the secondary control equipment is provided by a rectifying module arranged in the pole-mounted circuit breaker. In the prior art, the performance of a rectifier module serving as a power supply of a circuit breaker on a column in a set affects the operation of the whole set of equipment, so that the rectifier module must be tested, and test items at least comprise the output voltage and the output power of the rectifier module. Currently, test devices specially used for testing the rectifier modules are lacking.
Disclosure of Invention
The technical problem to be solved by the invention is to overcome the defects of the prior art and provide a test device for a rectifying module of an on-column circuit breaker.
In order to solve the technical problem, the invention provides a test device for a rectifying module of an on-pole circuit breaker, which comprises a voltage regulating module and a measuring module, wherein the voltage regulating module is connected with the measuring module;
the input end of the voltage regulating module is connected with a test power supply, the output end of the voltage regulating module is connected with the input end of the rectifying module, and the output end of the rectifying module is connected with the measuring module;
the voltage regulating module is used for outputting adjustable voltage to the rectifying module;
the measuring module is used for adjusting the operating power of the rectifying module to the rated power of the rectifying module and collecting the temperature difference of the rectifying module at n moments before and after the power is on under the rated power, wherein n is a preset time value.
Further, the voltage regulation module adopts a variable capacitor C4.
Furthermore, one end of the variable capacitor C4 is connected with a test power supply, the other end of the variable capacitor C4 is connected with the positive electrode of the input end of the rectifying module, and the negative electrode of the input end of the rectifying module is grounded.
Further, the measuring module comprises a direct current voltmeter UVDC ammeter IAThe adjustable resistance box R and the temperature acquisition device;
the DC voltmeter UVParallel with the output end of the rectification module, and a DC ammeter IAThe adjustable resistance boxes R are sequentially connected in series, the distance between the temperature acquisition device and the rectifier module is fixed, and the temperature value of the rectifier module is acquired.
Further, the temperature acquisition device adopts an infrared thermometer T.
And further, the temperature monitoring device further comprises a display screen, wherein the display screen is used for receiving the real-time temperature of the infrared thermometer and displaying the temperature difference.
The invention achieves the following beneficial effects:
the invention solves the problem that the rectifying module built in the pole circuit breaker in the prior art has no special test equipment, can play a role in measuring the rectifying modules with different output voltages and output powers, and has universality.
Drawings
FIG. 1 is a circuit diagram of the present invention during testing of a rectifier module;
fig. 2 is a simplified schematic diagram of an internal circuit structure of a rectifier module in the prior art.
Wherein the reference numerals are:
1. a rectification module; 21. a terminal a; 22. a wiring end b; 23. a terminal c; 24. a wiring end point d; 4. a variable capacitor; 5. a ground conductor; 6. a direct current voltmeter; 7. a direct current ammeter; 8. an adjustable resistance box.
Detailed Description
In order to make the objects, features and advantages of the present invention more obvious and understandable, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the embodiments described below are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
As shown in FIG. 1, the test circuit of the invention is used for testing the rectifier module, a terminal a21 of the rectifier module 1 to be tested is a high-voltage end on the input side, and a 10kV test power supply is connected to the terminal a21 after being divided by a variable capacitor 4. Terminal b22 is the input-side low-voltage terminal of rectifier module 1 and is intended to be reliably connected to ground conductor 5. The ground terminal c23 and the ground terminal d24 are the positive and negative poles of the output side of the rectifier module 1, respectively. DC voltmeter U V6 d.C. ammeter I A7, the positive pole should be connected to the connection point c23 when the wire is connected. The DC voltmeter U V6 is connected with the terminal d24, and the DC ammeter IAThe negative pole of 7 is connected in series with the adjustable resistance box 8 and then connected to the terminal d 24. The resistance value of the adjustable resistance box 8 is adjustable. The distance between the infrared thermometer T and the rectifier module is fixed, and the temperature value of the rectifier module is acquired. The LED display screen is used for receiving the real-time temperature of the infrared thermometer and displaying the temperature difference.
Preferably, if the rated input voltage of the rectifier module 1 is U, the rectifier module is connected to the power supplyabSaid variable capacitance C4According to the rated input power U of the rectifier moduleabAnd voltage determination of the experimental voltage.
The resistance value R of the adjustable resistance box 8 is U from the rated output voltage of the rectifier module 1cdAnd rated output power P.
In the embodiment, as shown in fig. 2, a simplified schematic diagram of an internal circuit structure of a rectifier module 1 in the prior art is shown to obtain powerThe alternating current output by the capacitor 3 is converted into direct current after being processed by a rectifying circuit, a filtering circuit, a voltage stabilizing circuit and a protecting circuit, and is provided for secondary control equipment. The test power is connected to the rectifier module 1 via the variable capacitor 4 at terminal a21, terminal b22 is connected to the ground conductor 5, and terminal c23 and terminal d24 are connected to the measuring module according to the invention. If the rated input voltage of the rectifier module 1 is UabThe capacitance value of the power-taking capacitor 3 is C3Then the variable capacitance C4Can be calculated by the following equation:
if the rated output voltage of the rectifier module 1 is UcdAnd the rated output power is P, the resistance value R of the regulating resistor box 8 can be calculated by the following formula:
the rectifier module 1 is operated at a rated power P, i.e. the direct voltage meter 6 reads UVAnd the DC ammeter 7 reading IASatisfy UV·IAWhen the voltage is equal to P, an infrared thermometer is used to measure the temperature difference between the rectifier module 1 before and after being powered on for 1 minute. The temperature difference is not higher than 5 ℃, and the output power can meet the requirement of rated power.
The invention solves the problem that the rectifier module 1 has no special test equipment, but is not limited to the test of the rectifier module 1. The invention can play a role in measuring the rectifier modules with different output voltages and output powers and has universality. The invention also belongs to the protection scope of the invention when the invention is used for other similar purposes.
The above-mentioned embodiments are only used for illustrating the technical solutions of the present invention, and not for limiting the same; although the present 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 solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (6)
1. A test device for a rectifying module of an on-pole circuit breaker is characterized by comprising a voltage regulating module and a measuring module;
the input end of the voltage regulating module is connected with a test power supply, the output end of the voltage regulating module is connected with the input end of the rectifying module, and the output end of the rectifying module is connected with the measuring module;
the voltage regulating module is used for outputting adjustable voltage to the rectifying module;
the measuring module is used for adjusting the operating power of the rectifying module to the rated power of the rectifying module and collecting the temperature difference of the rectifying module at n moments before and after the power is on under the rated power, wherein n is a preset time value.
2. The testing apparatus for pole top circuit breaker rectifier modules of claim 1, wherein the voltage regulation module employs a variable capacitor C4.
3. The testing device for the pole top breaker rectifier module of claim 2, wherein one end of the variable capacitor C4 is connected with a test power supply, the other end of the variable capacitor C4 is connected with the positive electrode of the input end of the rectifier module, and the negative electrode of the input end of the rectifier module is grounded.
4. Testing device for pole-mounted circuit breaker commutation module according to claim 1, characterized in that the measurement module comprises a direct voltage meter UVDC ammeter IAThe adjustable resistance box R and the temperature acquisition device;
the DC voltmeter UVParallel with the output end of the rectification module, and a DC ammeter IAAdjustable electricityThe resistance boxes R are sequentially connected in series, the distance between the temperature acquisition device and the rectifier module is fixed, and the temperature value of the rectifier module is acquired.
5. The testing device for the pole top circuit breaker rectifier module of claim 4, wherein the temperature acquisition device employs an infrared thermometer T.
6. The testing device for the pole top circuit breaker rectifier module of claim 5, further comprising a display screen for receiving the real-time temperature of the infrared thermometer and displaying the temperature difference.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011294101.6A CN112526382A (en) | 2020-11-18 | 2020-11-18 | Testing device for rectifying module of pole-mounted circuit breaker |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202011294101.6A CN112526382A (en) | 2020-11-18 | 2020-11-18 | Testing device for rectifying module of pole-mounted circuit breaker |
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| CN112526382A true CN112526382A (en) | 2021-03-19 |
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| CN202011294101.6A Pending CN112526382A (en) | 2020-11-18 | 2020-11-18 | Testing device for rectifying module of pole-mounted circuit breaker |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11402457B2 (en) * | 2019-06-10 | 2022-08-02 | Zhejiang Huadian Equipment Testing Institute Co., Ltd. | System and method for integrated test on primary-secondary pole-mounted breaker |
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| US11402457B2 (en) * | 2019-06-10 | 2022-08-02 | Zhejiang Huadian Equipment Testing Institute Co., Ltd. | System and method for integrated test on primary-secondary pole-mounted breaker |
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