CN112366102A - Closing locking self-checking state indicating device - Google Patents
Closing locking self-checking state indicating device Download PDFInfo
- Publication number
- CN112366102A CN112366102A CN202011330330.9A CN202011330330A CN112366102A CN 112366102 A CN112366102 A CN 112366102A CN 202011330330 A CN202011330330 A CN 202011330330A CN 112366102 A CN112366102 A CN 112366102A
- Authority
- CN
- China
- Prior art keywords
- closing
- indicating device
- circuit breaker
- self
- locking
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
- H01H9/16—Indicators for switching condition, e.g. "on" or "off"
- H01H9/161—Indicators for switching condition, e.g. "on" or "off" comprising light emitting elements
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H3/00—Mechanisms for operating contacts
- H01H3/22—Power arrangements internal to the switch for operating the driving mechanism
- H01H3/28—Power arrangements internal to the switch for operating the driving mechanism using electromagnet
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
- H02B11/00—Switchgear having carriage withdrawable for isolation
- H02B11/12—Switchgear having carriage withdrawable for isolation with isolation by horizontal withdrawal
- H02B11/167—Switchgear having carriage withdrawable for isolation with isolation by horizontal withdrawal truck type
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- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Breakers (AREA)
Abstract
The invention belongs to the technical field of electric power infrastructure, and particularly relates to a closing locking self-checking state indicating device. Set up in standard handcart-type cubical switchboard, its characterized in that: including state indication panel and with the former floodgate of standard handcart-type cubical switchboard block up a plurality of connecting circuit that self-checking circuit electricity is connected, specifically: in a closing and locking loop of the circuit breaker, a manual button is led out from two ends of a closing normally-open auxiliary contact of the circuit breaker and connected with a panel of the comprehensive state indicating device in parallel; the circuit breaker closing locking electromagnet stroke switch is additionally provided with a normally open contact which acts to close along with a closing loop contact when a closing locking electromagnet acts. The switching-on locking self-checking state indicating device and method provided by the invention can effectively check the integrity of a switching-on locking loop in the operating state of the circuit breaker, thereby ensuring the effective realization of a reclosing function to a certain extent.
Description
Technical Field
The invention belongs to the technical field of electric power infrastructure, and particularly relates to a closing locking self-checking state indicating device.
Background
The control circuit of the high-voltage circuit breaker realizes the closing and opening operation of the circuit breaker, and the effective monitoring of the closing and opening circuit of the circuit breaker is always an important means for ensuring the effective closing and opening operation of the circuit breaker. Generally adopt the design of combined floodgate shutting in handcart-type circuit breaker operation circuit 35 kilovolts and below, the guarantee circuit breaker only just allows the operation of closing a floodgate at experimental or operating position, but the circuit breaker is under the running state (handcart is at operating position, circuit breaker combined floodgate state) for a long time, the unable supervision of combined floodgate return circuit, whether combined floodgate shutting electro-magnet can be reliable action can't know, this buries down great hidden danger for the circuit breaker that has the automatic reclosing function, cause the circuit breaker to receive the unable coincidence that realizes of interim trouble, reduce the power supply reliability.
Disclosure of Invention
The invention aims to provide a closing locking self-checking state indicating device, which can self-check the integrity of a locking loop under the condition that a circuit breaker operates, and further provides support for a protection device to effectively realize an automatic reclosing function.
The switching-on locking self-checking state indicating device and method provided by the invention can effectively check the integrity of a switching-on locking loop in the operating state of the circuit breaker, thereby ensuring the effective realization of a reclosing function to a certain extent. The operation and maintenance personnel can realize the self-checking of the closing and locking loop of the circuit breaker through the button in the daily inspection process, and judge the integrity of the closing and locking and unlocking functions by lighting the self-checking indicator lamp, so that the operation stability and the power supply reliability of the transformer substation are improved.
In order to achieve the purpose, the invention adopts the technical scheme that:
the invention provides a closing locking self-checking state indicating device, which is characterized in that a closing locking loop self-checking button is added on the basis of the traditional comprehensive state indicating device and is used for switching on a closing locking loop, and a circuit breaker closing normally-open auxiliary node is used for switching on the closing locking loop and checking the reliability of a closing locking and unlocking function.
Furthermore, the invention provides a closing latching self-checking state indicating device, which is characterized in that a closing latching electromagnet travel switch is additionally arranged, when a closing latching loop is switched on (a closing latching self-checking button is pressed), the closing latching electromagnet is electrified to act, the travel switch on the closing latching electromagnet is switched on, an indicating loop is closed while a closing loop contact is switched on, and a closing latching self-checking indicating lamp is turned on.
Compared with the prior art, the invention has the following advantages:
the switching-on locking self-checking state indicating device and method provided by the invention can effectively check the integrity of a switching-on locking loop in the operating state of the circuit breaker, thereby ensuring the effective realization of a reclosing function to a certain extent. The operation and maintenance personnel can realize the self-checking of the closing and locking loop of the circuit breaker through the button in the daily inspection process, and judge the integrity of the closing and locking and unlocking functions by lighting the self-checking indicator lamp, so that the operation stability and the power supply reliability of the transformer substation are improved.
(1) The switching-on latching self-checking state indicating device provided by the invention fills the blank of the self-checking function of the switching-on latching loop of the circuit breaker in the operating state of the handcart circuit breaker of 35 kilovolts or below in the conventional transformer substation, and provides guarantee for effectively realizing the automatic reclosing function.
(2) The closing locking self-checking state indicating device provided by the invention has the advantages of simple structure, clear indication and no additional influence on the original loop. The device design is simple, only need provide button switch, switches on circuit breaker auxiliary switch, starts circuit breaker combined floodgate shutting electro-magnet, installs a combined floodgate shutting electro-magnet travel switch and pilot lamp additional simultaneously, switches on the instruction return circuit.
(3) The closing locking self-checking state indicating device provided by the invention has both economical efficiency and practicability. The whole device is good in economy, convenient to install and replace and clear in indicating lamp, and can effectively achieve self-checking of a closing locking and unlocking function of the circuit breaker.
Drawings
FIG. 1 is a schematic diagram of a self-test of a closing lockout device of a circuit breaker;
FIG. 2 is a panel of a closing lockout self-test status indicating device;
Detailed Description
The present invention will be described in detail with reference to specific examples.
The invention relates to a closing locking self-checking state indicating device, which is characterized in that a closing locking loop self-checking button is added on the basis of the traditional comprehensive state indicating device and is used for switching on a closing normally-open auxiliary node of a circuit breaker in a closing locking loop so as to switch on the closing locking loop and check the reliability of a closing locking and unlocking function.
According to the switching-on latching self-checking state indicating device, the switching-on latching electromagnet travel switch is additionally arranged, when a switching-on latching loop is switched on (a switching-on latching self-checking button is pressed), the switching-on latching electromagnet is electrified to act, the travel switch on the switching-on latching electromagnet is switched on, a switching-on loop contact is switched on, an indicating loop is closed at the same time, and a switching-on latching self-checking indicating lamp is turned on.
Taking a 10 kv handcart type circuit breaker as an example, a pair of button contacts are additionally arranged on a panel of the comprehensive state indicator, and the contacts are connected in parallel with two ends of a normally-closed contact DL of a closing locking loop, as shown in fig. 1.
A closing locking and unlocking indicating lamp L is additionally arranged on a panel of the comprehensive state indicator, the lamp provides 55V alternating current power supply, and meanwhile, a pair of normally open contacts S1 are additionally arranged on the mechanical action stroke of a closing locking electromagnet of a circuit breaker handcart and are connected in series with a closing locking and unlocking indicating loop as shown in figures 1 and 2.
By pressing a 'closing locking and unlocking' button FA, a closing locking loop H1 is switched on, a closing locking electromagnet is electrified to act, a closing locking and unlocking indicating loop is switched on through a mechanical action stroke contact, and an operation and maintenance maintainer can realize the self-checking function of the closing locking loop in the operating state of the circuit breaker.
The comprehensive state indicator structure is suitable for the existing standard handcart switch cabinet.
Finally, it should be noted that the above embodiments are only used for illustrating the technical solutions of the present invention, and not for limiting the protection scope of the present invention, although the present invention is described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions can be made on the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention.
Claims (3)
1. The utility model provides a combined floodgate shutting self-checking state indicating device, sets up in standard handcart-type cubical switchboard which characterized in that: including state indication panel and with the former floodgate of standard handcart-type cubical switchboard block up a plurality of connecting circuit that self-checking circuit electricity is connected, specifically:
in a closing and locking loop of the circuit breaker, a manual button is led out from two ends of a closing normally-open auxiliary contact of the circuit breaker and connected with a panel of the comprehensive state indicating device in parallel;
the circuit breaker closing locking electromagnet stroke switch is additionally provided with a normally open contact which acts to close along with a closing loop contact when a closing locking electromagnet acts.
2. The closing lock self-test status indicating device according to claim 1, wherein: a normally open contact is additionally arranged on a travel switch of a closing latching electromagnet of the circuit breaker, two ends of the normally open contact are led out and then connected with a state indicating device, and when the closing latching electromagnet acts, a latching loop is indicated to be intact.
3. The closing lock self-test state indicating device according to claim 2, characterized in that: the state indicating device is an indicating lamp or a sounder which is connected in series in a loop.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011330330.9A CN112366102A (en) | 2020-11-24 | 2020-11-24 | Closing locking self-checking state indicating device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011330330.9A CN112366102A (en) | 2020-11-24 | 2020-11-24 | Closing locking self-checking state indicating device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112366102A true CN112366102A (en) | 2021-02-12 |
Family
ID=74532764
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011330330.9A Pending CN112366102A (en) | 2020-11-24 | 2020-11-24 | Closing locking self-checking state indicating device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112366102A (en) |
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2020
- 2020-11-24 CN CN202011330330.9A patent/CN112366102A/en active Pending
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