CN109270444B - Circuit breaker control loop self-loop device - Google Patents
Circuit breaker control loop self-loop device Download PDFInfo
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- CN109270444B CN109270444B CN201810991064.0A CN201810991064A CN109270444B CN 109270444 B CN109270444 B CN 109270444B CN 201810991064 A CN201810991064 A CN 201810991064A CN 109270444 B CN109270444 B CN 109270444B
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- 230000007935 neutral effect Effects 0.000 claims 1
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- 230000004044 response Effects 0.000 abstract description 3
- 238000004904 shortening Methods 0.000 abstract description 3
- 238000001514 detection method Methods 0.000 abstract description 2
- 238000012423 maintenance Methods 0.000 description 8
- 238000010586 diagram Methods 0.000 description 5
- 230000007547 defect Effects 0.000 description 4
- 238000007689 inspection Methods 0.000 description 3
- 238000010276 construction Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
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- 238000005457 optimization Methods 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
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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 relates to the technical field of fault detection of a circuit breaker control loop, in particular to a circuit breaker control loop self-loop device which comprises an operation panel, an insulation shell and a change-over switch for load change-over, wherein the operation panel is arranged at the top of the insulation shell and is provided with a working gear, a test gear, a zero gear and an operation handle of a rotatable change-over switch, and any three groups of contacts on the change-over switch are respectively arranged as a change-over switch public end test contact, a change-over switch closing loop test contact, a change-over switch opening loop test contact and the like. The invention has reasonable and compact structure and convenient use, ensures that the arrangement and distribution of the fault processing work of the circuit breaker control loop are more reasonable, and the professional structure of the fault processing personnel team is more targeted, thereby shortening the response time of the fault rush-repair command, reducing the times of the fault processing work and saving the cost.
Description
Technical Field
The invention relates to the technical field of fault detection of a circuit breaker control loop, in particular to a circuit breaker control loop self-loop device.
Background
The circuit breaker is core power transformation equipment for power grid operation, and the operation state of the circuit breaker plays a crucial role in the safety and stability of the power grid, so that the circuit breaker control loop fault is treated as a serious treatment of equipment crisis defects. The operating signal of the circuit breaker is released from the protection device and triggers the action of the circuit breaker mechanism by the control cable and the operating condition determining element being applied to the electromagnetic unit inside the insulating housing of the circuit breaker. The circuit breaker operating circuit is manually divided into two parts at the circuit breaker terminal box, one part from the change-over switch to the protection device (referred to as the device section) and one part from the change-over switch to the mechanism section (referred to as the mechanism section), only for circuit breaker operating circuit faults. The equipment operation and inspection management department needs to coordinate the related personnel of the second major to the field inspection processing when the faults occur each time, and often the faults only relate to the work of one major, and the other major only plays the role of accompanying inspection, so that the cost investment is increased intangibly, and the working efficiency is reduced.
In recent years, with the acceleration of the construction pace of the power grid and the wide application of new equipment, new technology and new technology, the working pressure of teams is increasingly increased, and the contradiction between rigid absences is also increasingly prominent. With the strict control and requirements of the national network company on the equipment defect occurrence rate and the defect elimination rate, great working pressure is caused on equipment operation and maintenance management departments by manpower and material resources input for breaker control loop fault treatment every year.
Disclosure of Invention
The invention provides a circuit breaker control loop self-loop device, which overcomes the defects of the prior art, and can effectively solve the problems that when the prior circuit breaker fails, the manual work cannot accurately judge which section of the circuit breaker control loop fails, and the maintenance is time-consuming and labor-consuming and the construction efficiency is lower.
The technical scheme of the invention is realized by the following measures: the circuit breaker control loop self-loop device comprises an operation panel, an insulation shell and a change-over switch for load change-over, wherein the operation panel is arranged at the top of the insulation shell, an operation gear, a test gear, a zero gear and an operation handle of the rotatable change-over switch are arranged on the operation panel, and any three groups of contacts on the change-over switch are respectively arranged as a change-over switch common end test contact, a change-over switch closing loop test contact and a change-over switch opening loop test contact;
the first position of the public end test contact of the change-over switch is connected with the public end of a mechanism section of the circuit breaker, the second position of the public end test contact of the change-over switch is connected with the public end of a circuit breaker device section, the third position of the public end test contact of the change-over switch is connected with the first position of the public end test contact of the change-over switch, and the fourth position of the public end test contact of the change-over switch is respectively connected with the first position of the normally open contact of an auxiliary switch of the circuit breaker and the first position of the normally closed contact of the auxiliary switch of the circuit breaker;
the first position of the switching-on loop test contact of the change-over switch is connected with a switching-on loop of the circuit breaker mechanism section, the second position of the switching-on loop test contact of the change-over switch is connected with a switching-on loop of the circuit breaker device section, the third position of the switching-on loop test contact of the change-over switch is connected with the first position of the switching-on loop test contact of the change-over switch, and the fourth position of the switching-on loop test contact of the change-over switch is connected with the second position of the auxiliary switch normally-closed contact of the circuit breaker;
the first position of the switching-off loop test contact of the change-over switch is connected with the switching-off loop of the breaker mechanism section, the second position of the switching-off loop test contact of the change-over switch is connected with the switching-off loop of the breaker device section, the third position of the switching-off loop test contact of the change-over switch is connected with the first position of the switching-off loop test contact of the change-over switch, and the fourth position of the switching-on loop test contact of the change-over switch is connected with the second position of the auxiliary switch normally-open contact of the breaker.
The following are further optimizations and/or improvements to the above-described inventive solution:
the rotation angle of the operating handle is in the range of 0 DEG to 90 deg.
The invention has reasonable and compact structure and convenient use, and under the condition of the control loop fault of the circuit breaker, a change-over switch is utilized to cut a test loop into the control loop of the circuit breaker so as to verify whether the control loop from the invention to the circuit breaker mechanism section is connected or not, thereby determining which section of the loop the fault occurs on. The invention ensures that the arrangement and distribution of the fault processing work of the circuit breaker control loop are more reasonable, and the professional structure of a team of fault processing personnel is more targeted, so as to achieve the fundamental purposes of shortening the response time of a fault rush-repair command, reducing the times of the fault processing work, saving the expenditure cost of the fault processing work and really playing the roles of improving quality and enhancing efficiency.
Drawings
Fig. 1 is a schematic perspective view of a preferred embodiment of the present invention.
Fig. 2 is a schematic view of the structure of the operation panel in fig. 1.
Fig. 3 is a circuit wiring diagram of the operating handle of the present invention in the zero gear position.
Fig. 4 is a circuit wiring diagram of the operating handle of the present invention in an operating range.
Fig. 5 is a circuit wiring diagram of the operating handle of the present invention in a test gear.
The codes in the drawings are respectively: 1 is an operation panel, 2 is an insulating shell, 3 is a change-over switch, and 4 is an operation handle.
Detailed Description
The present invention is not limited by the following examples, and specific embodiments can be determined according to the technical scheme and practical situations of the present invention.
In the present invention, for convenience of description, the description of the relative positional relationship of each component is described according to the layout manner of fig. 1 of the specification, for example: the positional relationship of the front, rear, upper, lower, left, right, etc. is determined in accordance with the layout direction of the drawings of the specification.
The invention is further described below with reference to examples and figures:
as shown in fig. 1, 2, 3, 4, 5 and table 1, the circuit breaker control loop self-loop device comprises an operation panel 1, an insulation shell 2 and a change-over switch 3 for load change, wherein the operation panel 1 is arranged at the top of the insulation shell 2, an operation handle 4 for rotating the change-over switch 3, and an operation gear, a test gear, a zero gear and any three groups of contacts on the change-over switch 3 are respectively arranged as a test contact at a public end of the change-over switch 3, a test contact for a closing loop of the change-over switch 3 and a test contact for a breaking loop of the change-over switch 3;
the first position of the public end test contact of the change-over switch 3 is connected with the public end of a mechanism section of the circuit breaker, the second position of the public end test contact of the change-over switch 3 is connected with the public end of a circuit breaker device section, the third position of the public end test contact of the change-over switch 3 is connected with the first position of the public end test contact of the change-over switch 3, and the fourth position of the public end test contact of the change-over switch 3 is respectively connected with the first position of the normally open contact of an auxiliary switch of the circuit breaker and the first position of the normally closed contact of the auxiliary switch of the circuit breaker;
the first position of the switching-on loop test contact of the change-over switch 3 is connected with a switching-on loop of the circuit breaker mechanism section, the second position of the switching-on loop test contact of the change-over switch 3 is connected with a switching-on loop of the circuit breaker device section, the third position of the switching-on loop test contact of the change-over switch 3 is connected with the first position of the switching-on loop test contact of the change-over switch 3, and the fourth position of the switching-on loop test contact of the change-over switch 3 is connected with the second position of the auxiliary switch normally-closed contact of the circuit breaker;
the first position of the switching-off loop test contact of the change-over switch 3 is connected with the switching-off loop of the breaker mechanism section, the second position of the switching-off loop test contact of the change-over switch 3 is connected with the switching-off loop of the breaker device section, the third position of the switching-off loop test contact of the change-over switch 3 is connected with the first position of the switching-off loop test contact of the change-over switch, and the fourth position of the switching-on loop test contact of the change-over switch 3 is connected with the second position of the auxiliary switch normally-open contact of the breaker.
The change-over switch 3 is a conventional common change-over switch, and when the operating handle 4 of the invention is driven to the middle zero gear position in actual working, the invention is in a cut-out state, and the corresponding loop wiring diagram 3 is as follows: the operating circuits of the device section of the circuit breaker are disconnected from the test circuits of the change-over switch 3 and from the circuit of the mechanism section of the circuit breaker, and act as an electrical interruption in the event of a fault.
When the operating handle 4 of the invention is hit to the working gear position, the invention is in a normal state, the corresponding loop wiring is shown in fig. 4, the operating loop of the breaker protection device section is directly connected with the loop corresponding to the mechanism section of the breaker through the first position of each loop contact of the change-over switch 3, and the function of transitional connection is realized under the normal condition.
When the operating handle 4 of the invention is hit to the position of the test gear, the invention is in a cut-in state, the corresponding loop wiring diagram is shown as 5, at this time, the switching-on loop test contact of the change-over switch 3 and the switching-off loop test contact of the change-over switch 3 are connected into the control loop of the circuit breaker, which is equivalent to the connection of a branch connected with the mechanism section of the circuit breaker in parallel on the control loop of the circuit breaker, and the function of loop signal self-loop is realized under the fault condition.
In the normal running state, the operating handle 4 should be driven to the working position, otherwise, the control circuit is not communicated. When the invention is in a test state, the control loop is connected with a test channel, and the circuit breaker cannot be operated at the moment, otherwise, the control power supply is free to trip, and after the test is finished, the operating handle 4 is required to be arranged at a zero gear to prevent other operation faults caused by the fault of the circuit breaker control loop.
The invention has reasonable and compact structure and convenient use, and under the condition of the control loop of the circuit breaker, a change-over switch 3 is utilized to cut a test loop into the control loop of the circuit breaker so as to verify whether the control loop from the invention to the circuit breaker mechanism section is connected or not, thereby determining which section of the loop the fault occurs on. The invention ensures that the arrangement and distribution of the fault processing work of the circuit breaker control loop are more reasonable, and the professional structure of a team of fault processing personnel is more targeted, so as to achieve the fundamental purposes of shortening the response time of a fault rush-repair command, reducing the times of the fault processing work, saving the expenditure cost of the fault processing work and really playing the roles of improving quality and enhancing efficiency.
The circuit breaker control loop self-loop device can be further optimized or/and improved according to actual needs:
as shown in fig. 1 and 2, the rotation angle of the operating handle 4 ranges from 0 ° to 90 °.
When the operating handle 4 rotates to the left side and obliquely upwards reaches 45 degrees, the operating handle indicates that the operating handle is in a working gear, when the operating handle 4 rotates to the middle and forward upwards position, the operating handle indicates that the operating handle is in a zero gear, and when the operating handle 4 rotates to the right side and obliquely upwards reaches 45 degrees, the operating handle indicates that the operating handle is in a test gear. The positions of the test gear and the working gear can be interchanged according to actual needs, so that the user operation is convenient.
The technical characteristics form the optimal embodiment of the invention, have stronger adaptability and optimal implementation effect, and can increase or decrease unnecessary technical characteristics according to actual needs so as to meet the requirements of different situations.
The working principle of the invention is as follows: the circuit breaker control loop is manually split into two parts at the circuit breaker terminal box, one part from the terminal box to the protection device (referred to as the device section) and one part from the terminal box to the mechanism section (referred to as the mechanism section). When the protection device sends out a broken line alarm signal of a circuit breaker control loop, an operation and maintenance person on site only needs to drive the operating handle 4 of the invention to a test gear from a zero setting gear, then the alarm signal on the protection device is reset, if the operation and maintenance device can reset, the fault part can be judged to be on a mechanism section, and if the operation and maintenance device cannot reset, the fault part can be judged to be on a protection device section. Therefore, when the equipment maintenance department receives the fault first-aid repair command in actual work arrangement, the equipment maintenance department can conduct fault treatment by pertinently arranging related professionals after necessary work communication with on-site operation and maintenance personnel is conducted before the work arrangement.
Claims (2)
1. The circuit breaker control loop self-loop device is characterized by comprising an operation panel, an insulation shell and a change-over switch for load change-over, wherein the operation panel is arranged at the top of the insulation shell, an operation handle of the rotatable change-over switch, a working gear, a test gear, a zero gear and any three groups of contacts on the change-over switch are respectively arranged as a change-over switch common end test contact, a change-over switch closing loop test contact and a change-over switch opening loop test contact;
the first position of the public end test contact of the change-over switch is connected with the public end of a mechanism section of the circuit breaker, the second position of the public end test contact of the change-over switch is connected with the public end of a circuit breaker device section, the third position of the public end test contact of the change-over switch is connected with the first position of the public end test contact of the change-over switch, and the fourth position of the public end test contact of the change-over switch is respectively connected with the first position of the normally open contact of an auxiliary switch of the circuit breaker and the first position of the normally closed contact of the auxiliary switch of the circuit breaker;
the first position of the switching-on loop test contact of the change-over switch is connected with a switching-on loop of the circuit breaker mechanism section, the second position of the switching-on loop test contact of the change-over switch is connected with a switching-on loop of the circuit breaker device section, the third position of the switching-on loop test contact of the change-over switch is connected with the first position of the switching-on loop test contact of the change-over switch, and the fourth position of the switching-on loop test contact of the change-over switch is connected with the second position of the auxiliary switch normally-closed contact of the circuit breaker;
the first position of the switching-off loop test contact of the change-over switch is connected with the switching-off loop of the breaker mechanism section, the second position of the switching-off loop test contact of the change-over switch is connected with the switching-off loop of the breaker device section, the third position of the switching-off loop test contact of the change-over switch is connected with the first position of the switching-off loop test contact of the change-over switch, and the fourth position of the switching-on loop test contact of the change-over switch is connected with the second position of the auxiliary switch normally-open contact of the breaker;
when the operating handle is at the neutral position, the operating loops of the device section of the circuit breaker, the testing loops of the change-over switch and the loops of the mechanism section of the circuit breaker are mutually disconnected in a cut-out state, and the circuit breaker plays a role in electric separation under the fault condition; when the operating handle is hit to the working gear position, the operating circuit of the breaker protection device section is in a normal state, the first position of each circuit contact of the change-over switch is directly connected with a circuit corresponding to the mechanism section of the breaker, and the transition connection function is realized under the normal condition; when the operating handle is in a test gear position, in a cut-in state, the switching-on loop test contact of the change-over switch and the switching-off loop test contact of the change-over switch are connected into a control loop of the circuit breaker, which is equivalent to the fact that a branch connected with a mechanism section of the circuit breaker in parallel is connected onto the control loop of the circuit breaker, and the function of loop signal self-loop is achieved under the fault condition.
2. The circuit breaker control loop self-closing apparatus of claim 1, wherein the operating handle has a rotation angle ranging from 0 ° to 90 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810991064.0A CN109270444B (en) | 2018-08-28 | 2018-08-28 | Circuit breaker control loop self-loop device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810991064.0A CN109270444B (en) | 2018-08-28 | 2018-08-28 | Circuit breaker control loop self-loop device |
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| Publication Number | Publication Date |
|---|---|
| CN109270444A CN109270444A (en) | 2019-01-25 |
| CN109270444B true CN109270444B (en) | 2023-12-05 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201810991064.0A Active CN109270444B (en) | 2018-08-28 | 2018-08-28 | Circuit breaker control loop self-loop device |
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Citations (5)
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| CN103762126A (en) * | 2014-01-13 | 2014-04-30 | 江苏现代电力科技股份有限公司 | Integrated high-voltage AC circuit breaker and protection circuit working method thereof |
| CN105006402A (en) * | 2015-07-23 | 2015-10-28 | 亚洲电力设备(深圳)股份有限公司 | Permanent-magnet vacuum circuit breaker switch |
| CN205139322U (en) * | 2015-11-13 | 2016-04-06 | 国网冀北电力有限公司唐山供电公司 | Handcart -type circuit breaker analogue test appearance |
| CN106483423A (en) * | 2016-12-05 | 2017-03-08 | 山东钢铁股份有限公司 | A kind of trouble shoot method and device of breaker open operation electric loop |
| CN209014692U (en) * | 2018-08-28 | 2019-06-21 | 国网新疆电力有限公司伊犁供电公司 | Breaker control circuit is from loop device |
-
2018
- 2018-08-28 CN CN201810991064.0A patent/CN109270444B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103762126A (en) * | 2014-01-13 | 2014-04-30 | 江苏现代电力科技股份有限公司 | Integrated high-voltage AC circuit breaker and protection circuit working method thereof |
| WO2015103884A1 (en) * | 2014-01-13 | 2015-07-16 | 江苏现代电力科技股份有限公司 | Integrated high-voltage alternating-current circuit-breaker and protective circuit operating method therefor |
| CN105006402A (en) * | 2015-07-23 | 2015-10-28 | 亚洲电力设备(深圳)股份有限公司 | Permanent-magnet vacuum circuit breaker switch |
| CN205139322U (en) * | 2015-11-13 | 2016-04-06 | 国网冀北电力有限公司唐山供电公司 | Handcart -type circuit breaker analogue test appearance |
| CN106483423A (en) * | 2016-12-05 | 2017-03-08 | 山东钢铁股份有限公司 | A kind of trouble shoot method and device of breaker open operation electric loop |
| CN209014692U (en) * | 2018-08-28 | 2019-06-21 | 国网新疆电力有限公司伊犁供电公司 | Breaker control circuit is from loop device |
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| Publication number | Publication date |
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| CN109270444A (en) | 2019-01-25 |
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