CN112305274A - Well low-voltage plate cabinet secondary circuit test interface switching circuit - Google Patents
Well low-voltage plate cabinet secondary circuit test interface switching circuit Download PDFInfo
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- CN112305274A CN112305274A CN202011270141.7A CN202011270141A CN112305274A CN 112305274 A CN112305274 A CN 112305274A CN 202011270141 A CN202011270141 A CN 202011270141A CN 112305274 A CN112305274 A CN 112305274A
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- switching
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R1/00—Details of instruments or arrangements of the types included in groups G01R5/00 - G01R13/00 and G01R31/00
- G01R1/02—General constructional details
- G01R1/04—Housings; Supporting members; Arrangements of terminals
- G01R1/0408—Test fixtures or contact fields; Connectors or connecting adaptors; Test clips; Test sockets
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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
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- Testing Electric Properties And Detecting Electric Faults (AREA)
Abstract
The invention discloses a secondary circuit test interface switching circuit of a medium-low voltage disc cabinet, which comprises a secondary circuit aviation plug, a secondary circuit test aviation socket, an energy storage and secondary switching-on and switching-off test switching circuit and a switch auxiliary contact test switching circuit; the secondary loop aviation plug is connected with a secondary loop of a medium voltage disk cabinet or a low voltage disk cabinet to be tested, the secondary loop aviation socket for testing is matched with the secondary loop aviation plug, and an outgoing line of the secondary loop aviation socket for testing is connected with an energy storage and secondary switching-on and switching-off testing switching loop and a switch auxiliary contact testing switching loop. The invention can realize the test switching of the opening and closing coil, the energy storage motor and the auxiliary contact through the connection of the energy storage and secondary opening and closing test switching loop and the switch auxiliary contact test switching loop, does not need to disassemble wires, improves the test efficiency, reduces the misoperation risk, is safe and reliable, and is suitable for popularization and application.
Description
Technical Field
The invention relates to the technical field of middle and low voltage disc cabinet testing, in particular to a switching circuit of a secondary circuit testing interface of a middle and low voltage disc cabinet.
Background
The medium and low voltage disc cabinet is widely applied to the fields of nuclear power, factories, mines, rail transit and the like, the power distribution and control systems in various industries are tightly combined, the control loops are relatively complex, a plurality of matched manufacturers exist, the interfaces of control lines of different manufacturers do not have uniform standards, and the conditions result in that the medium and low voltage disc cabinets at home and abroad are non-standard products at present. In order to ensure the smooth production, the stability of the performance of the medium voltage switchboard plays an important role, and therefore, many industries set up the maintenance cycle and maintenance outline of the switchboard. At present, tests of secondary circuits of middle and low voltage disc cabinets are manually detected, resistance values of a closing and opening coil, an energy storage motor and an auxiliary contact are measured through a universal meter to judge whether the closing and opening coil, the energy storage motor and the auxiliary contact are normal or not, voltage is applied to the closing and opening coil and the energy storage motor through the outside to judge whether functions are normal or not, the test circuits cannot be automatically switched, a large number of test points are involved in a test process, multiple measurements need to be carried out on positions of secondary terminals of switches, the space is narrow, wiring is dense, signal measurement is extremely difficult, and risks of mistaken touch, mistaken measurement, short circuit, grounding and the like exist.
The above problems are urgently needed to be solved.
Disclosure of Invention
The invention aims to solve the problems mentioned in the background technology part by using a switching circuit of a secondary loop test interface of a medium-low voltage disc cabinet.
In order to achieve the purpose, the invention adopts the following technical scheme:
the embodiment of the invention provides a secondary circuit test interface switching circuit of a medium-low voltage disc cabinet, which comprises a secondary circuit aviation plug, a secondary circuit test aviation socket, an energy storage and secondary switching-on and switching-off test switching circuit and a switch auxiliary contact test switching circuit; the secondary loop aviation plug is connected with a secondary loop of a medium voltage disk cabinet or a low voltage disk cabinet to be tested, the secondary loop aviation socket for testing is matched with the secondary loop aviation plug, and an outgoing line of the secondary loop aviation socket for testing is connected with an energy storage and secondary switching-on and switching-off testing switching loop and a switch auxiliary contact testing switching loop.
Particularly, one end of an opening and closing coil control interface and one end of an energy storage control interface in the energy storage and secondary opening and closing test switching loop are respectively connected with an opening and closing coil control power supply and an energy storage control power supply of the switching characteristic comprehensive tester, the other end of the energy storage and secondary opening and closing coil control interface and the energy storage control interface are connected with a secondary loop test aviation socket, a secondary loop aviation plug is inserted into the secondary loop test aviation socket, and the secondary loop aviation plug is connected with a secondary opening and closing coil and an energy storage motor of a medium-voltage disc cabinet or a low-voltage disc cabinet to be.
Particularly, one end of each of a plurality of auxiliary contact testing interfaces in the switch auxiliary contact testing switching loop is connected with a corresponding auxiliary contact testing end in the switch characteristic comprehensive tester, the other end of each auxiliary contact testing interface is connected with one end of an internal switching relay, the other end of the internal switching relay is connected with a secondary loop testing aviation socket, a secondary loop aviation plug is plugged on the secondary loop testing aviation socket, and the secondary loop aviation plug is connected with a medium-voltage disc cabinet or a low-voltage disc cabinet to be tested.
According to the secondary circuit test interface switching circuit for the medium-low voltage disc cabinet, the secondary circuit aviation plug of the medium-low voltage disc cabinet or the low-voltage disc cabinet to be tested is plugged on the secondary circuit test aviation socket, the test switching of the opening and closing coil, the energy storage motor and the auxiliary contact can be realized through the connection of the energy storage and secondary opening and closing test switching circuit and the switch auxiliary contact test switching circuit, the disconnection is not needed, the test efficiency is improved, the misoperation risk is reduced, the secondary circuit test interface switching circuit is safe and reliable, and the secondary circuit aviation plug is suitable for popularization and application.
Drawings
Fig. 1 is a structural diagram of a switching loop for energy storage and secondary switching on/off test according to an embodiment of the present invention;
fig. 2 is a structural diagram of a switching loop for testing an auxiliary contact of a switch according to an embodiment of the present invention.
Detailed Description
To facilitate an understanding of the invention, the invention will now be described more fully with reference to the accompanying drawings. Preferred embodiments of the present invention are shown in the drawings. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete. It will be understood that when an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. Unless defined otherwise, all 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. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
In the embodiment, the switching circuit of the secondary circuit test interface of the medium-low voltage disc cabinet specifically comprises a secondary circuit aviation plug, a secondary circuit test aviation socket, an energy storage and secondary switching-on and switching-off test switching circuit and a switch auxiliary contact test switching circuit; the secondary loop aviation plug is connected with a secondary loop of a medium voltage disk cabinet or a low voltage disk cabinet to be tested, the secondary loop aviation socket for testing is matched with the secondary loop aviation plug, and an outgoing line of the secondary loop aviation socket for testing is connected with an energy storage and secondary switching-on and switching-off testing switching loop and a switch auxiliary contact testing switching loop.
Specifically, in this embodiment, one end of the switching coil control interface and the energy storage control interface in the energy storage and secondary switching test switching loop is respectively connected to the switching coil control power supply and the energy storage control power supply of the switching characteristic comprehensive tester, the other end of the switching coil control interface and the energy storage control interface is connected to the secondary loop test aviation socket, the secondary loop aviation plug is inserted into the secondary loop test aviation socket, and the secondary loop aviation plug is connected to the secondary switching coil and the energy storage motor of the medium voltage disk cabinet or the low voltage disk cabinet to be tested. Specifically, taking a test object as a medium-voltage switch as an example, as shown in fig. 1, GDKC in the figure is a switching characteristic comprehensive tester, J10 indicates a switching-on/off coil control power supply, J11 indicates an energy storage control power supply, QF indicates a high-voltage circuit breaker, XS1 indicates a secondary circuit aviation plug, and M indicates an energy storage motor. When a secondary closing and opening loop is tested, a secondary loop aviation plug is plugged on a secondary loop testing aviation socket, the test is started, a switch characteristic comprehensive tester automatically adjusts control voltage required by a testing switch, the control voltage is sequentially applied to an energy storage and closing and opening loop through J10 and J11, the inside of the switch characteristic comprehensive tester is connected to a resistance testing loop, and the switch characteristic comprehensive tester automatically measures direct current resistances of an energy storage motor coil and a switching-closing coil in the energy storage and closing and opening processes.
Specifically, in this embodiment, one end of each of the plurality of auxiliary contact test interfaces in the switch auxiliary contact test switching loop is connected to a corresponding auxiliary contact test end in the switch characteristic comprehensive tester, the other end of each of the plurality of auxiliary contact test interfaces is connected to one end of the internal switching relay, the other end of the internal switching relay is connected to the secondary loop test aviation socket, the secondary loop aviation plug is inserted into the secondary loop test aviation socket, and the secondary loop aviation plug is connected to the to-be-tested medium voltage disk cabinet or low voltage disk cabinet. Specifically, taking a test object as a medium-voltage switch as an example, as shown in fig. 2, GDKC in the drawing is a switch characteristic comprehensive tester, J2.1 denotes an auxiliary contact test terminal, J2.2 denotes an auxiliary contact test terminal, QF denotes a high-voltage circuit breaker, and KS1 to KS16 are internal switching relays. The auxiliary contact of the test switch is connected to internal switching relays KS1-KS16 through a secondary aviation socket, and the internal switching relays KS1-KS20 are connected to auxiliary contact test ends J2.1 and J2.2 of the switch characteristic comprehensive tester. And (4) starting the test, sequentially switching on the auxiliary contact loop of the test switch by the internal switching relay through the control sequence of the switching control device, and automatically measuring the contact resistance of the auxiliary contact by the switch characteristic comprehensive tester.
According to the technical scheme provided by the invention, the secondary loop aviation plug of the medium voltage disk cabinet or the low voltage disk cabinet to be tested is plugged on the secondary loop test aviation socket, the test switching of the opening and closing coil, the energy storage motor and the auxiliary contact can be realized by connecting the energy storage and secondary opening and closing test switching loop and the switch auxiliary contact test switching loop, the disconnection is not needed, the test efficiency is improved, the misoperation risk is reduced, and the method is safe, reliable and suitable for popularization and application. The invention is compatible with the secondary circuit interfaces of switches of different brands and different models, can be used for the performance test of the secondary circuit of the mainstream middle-low voltage disk cabinets of Schneider, ABB, Mueller, Siemens, domestic brands and the like, and can design different interfaces according to different switches, and the interfaces can be replaced.
It is to be noted that the foregoing is only illustrative of the preferred embodiments of the present invention and the technical principles employed. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, although the present invention has been described in greater detail by the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the spirit of the present invention, and the scope of the present invention is determined by the scope of the appended claims.
Claims (3)
1. A secondary circuit test interface switching circuit of a medium-low voltage disc cabinet is characterized by comprising a secondary circuit aviation plug, a secondary circuit test aviation socket, an energy storage and secondary switching-on and switching-off test switching circuit and a switch auxiliary contact test switching circuit; the secondary loop aviation plug is connected with a secondary loop of a medium voltage disk cabinet or a low voltage disk cabinet to be tested, the secondary loop aviation socket for testing is matched with the secondary loop aviation plug, and an outgoing line of the secondary loop aviation socket for testing is connected with an energy storage and secondary switching-on and switching-off testing switching loop and a switch auxiliary contact testing switching loop.
2. The switching circuit of the secondary circuit testing interface of the medium and low voltage disc cabinet according to claim 1, wherein one end of the switching coil control interface and the energy storage control interface in the energy storage and secondary switching test switching circuit are respectively connected with the switching coil control power supply and the energy storage control power supply of the switching characteristic comprehensive tester, the other end of the switching coil control interface and the energy storage control interface is connected with a secondary circuit testing aviation socket, a secondary circuit aviation plug is plugged on the secondary circuit testing aviation socket, and the secondary circuit aviation plug is connected with a secondary switching coil and an energy storage motor of the medium voltage disc cabinet or the low voltage disc cabinet to be tested.
3. The switching circuit of the secondary circuit test interface of the middle and low voltage disc cabinet as claimed in claim 2, wherein one end of a plurality of auxiliary contact test interfaces in the switch auxiliary contact test switching circuit is connected with a corresponding auxiliary contact test end in the switch characteristic comprehensive tester, the other end is connected with one end of an internal switching relay, the other end of the internal switching relay is connected with a secondary circuit test aviation socket, a secondary circuit aviation plug is plugged on the secondary circuit test aviation socket, and the secondary circuit aviation plug is connected with the middle voltage disc cabinet or the low voltage disc cabinet to be tested.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011270141.7A CN112305274A (en) | 2020-11-13 | 2020-11-13 | Well low-voltage plate cabinet secondary circuit test interface switching circuit |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011270141.7A CN112305274A (en) | 2020-11-13 | 2020-11-13 | Well low-voltage plate cabinet secondary circuit test interface switching circuit |
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| CN112305274A true CN112305274A (en) | 2021-02-02 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202011270141.7A Pending CN112305274A (en) | 2020-11-13 | 2020-11-13 | Well low-voltage plate cabinet secondary circuit test interface switching circuit |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112327018A (en) * | 2020-11-13 | 2021-02-05 | 无锡中科电气设备有限公司 | Well low-voltage plate cabinet major loop test interface switching circuit |
| CN114167188A (en) * | 2021-12-08 | 2022-03-11 | 无锡中科电气设备有限公司 | Testing arrangement of low-voltage plate cabinet |
| CN114184948A (en) * | 2021-12-08 | 2022-03-15 | 无锡中科电气设备有限公司 | Testing device for medium-voltage switch |
| CN114200295A (en) * | 2021-12-13 | 2022-03-18 | 国网福建省电力有限公司晋江市供电公司 | Plug connector switching method for mechanical characteristic test of 10KV circuit breaker |
-
2020
- 2020-11-13 CN CN202011270141.7A patent/CN112305274A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112327018A (en) * | 2020-11-13 | 2021-02-05 | 无锡中科电气设备有限公司 | Well low-voltage plate cabinet major loop test interface switching circuit |
| CN114167188A (en) * | 2021-12-08 | 2022-03-11 | 无锡中科电气设备有限公司 | Testing arrangement of low-voltage plate cabinet |
| CN114184948A (en) * | 2021-12-08 | 2022-03-15 | 无锡中科电气设备有限公司 | Testing device for medium-voltage switch |
| CN114200295A (en) * | 2021-12-13 | 2022-03-18 | 国网福建省电力有限公司晋江市供电公司 | Plug connector switching method for mechanical characteristic test of 10KV circuit breaker |
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| TA01 | Transfer of patent application right |
Effective date of registration: 20220802 Address after: 298 Furong Zhong Er Road, Xishan Economic Development Zone, Wuxi City, Jiangsu Province, 214000 Applicant after: WUXI ZHONGKE ELECTRIC EQUIPMENT Co.,Ltd. Address before: 298 Furong Zhong Er Road, Xishan Economic Development Zone, Wuxi City, Jiangsu Province, 214000 Applicant before: WUXI ZHONGKE ELECTRIC EQUIPMENT Co.,Ltd. Applicant before: Shenzhen Union Clean Energy Research Institute |
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