CN210074875U - Remote control locking circuit of transformer substation - Google Patents
Remote control locking circuit of transformer substation Download PDFInfo
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- CN210074875U CN210074875U CN201921075960.9U CN201921075960U CN210074875U CN 210074875 U CN210074875 U CN 210074875U CN 201921075960 U CN201921075960 U CN 201921075960U CN 210074875 U CN210074875 U CN 210074875U
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- switch
- change
- over switch
- over
- mechanism box
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S10/00—Systems supporting electrical power generation, transmission or distribution
- Y04S10/16—Electric power substations
Abstract
The utility model discloses a remote control locking circuit of a transformer substation, which comprises a plurality of switch control loops connected in parallel, wherein each switch control loop comprises a three-position change-over switch and a switch mechanism box, and the three-position change-over switch is provided with three change-over switches; a line protection measurement and control device is arranged between the first change-over switch and the switch mechanism box, a terminal box is arranged between the second change-over switch and the switch mechanism box, and the third change-over switch is directly connected with the switch mechanism box through a cable; the first change-over switch, the second change-over switch and the third change-over switch are respectively provided with a plurality of signal nodes correspondingly. The local operation of the switches is realized through a plurality of switch control loops connected in parallel; the programming operation of the transformer substation is standardized by corresponding to remote operation, terminal box on-site operation and switch mechanism box on-site operation through a three-station change-over switch; and setting an internal signal node to realize remote control program operation.
Description
Technical Field
The utility model relates to a transformer substation technical field, especially a remote control blocking circuit of transformer substation.
Background
The circuit breaker is a switching device capable of closing, carrying, and opening/closing a current under a normal circuit condition, and closing a current under an abnormal circuit condition carried and opened at a prescribed time.
At present, the operation state of a disconnecting link of a transformer substation is mostly manually operated on site, and potential safety hazards such as wrong intervals and operation errors exist in an operator.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to solve one of the technical problem that exists among the prior art at least, provide a remote control blocking circuit of transformer substation, can effectively reduce operating personnel's maloperation.
The utility model provides a technical scheme that its problem adopted is:
a remote control locking circuit of a transformer substation comprises a plurality of switch control loops which are connected in parallel, wherein each switch control loop comprises a three-position change-over switch and a switch mechanism box, and the three-position change-over switch is provided with a first change-over switch, a second change-over switch and a third change-over switch which respectively correspond to three different operation states; one end of the first change-over switch, one end of the second change-over switch and one end of the third change-over switch are respectively and directly connected with the switch mechanism box through cables; a line protection measurement and control device is arranged between the other end of the first change-over switch and the switch mechanism box, a terminal box is arranged between the other end of the second change-over switch and the switch mechanism box, and the other end of the third change-over switch is directly connected with the switch mechanism box through a cable; the first change-over switch, the second change-over switch and the third change-over switch are all correspondingly provided with a plurality of signal nodes.
Furthermore, a first branch and a second branch are led out from the line protection measurement and control device and are respectively connected with the switch mechanism box.
Furthermore, the terminal box is provided with five anti-locks, an opening switch and a closing switch, one end of the five anti-locks is connected with the other end of the second change-over switch, the other end of the five anti-locks is respectively connected with one end of the opening switch and one end of the closing switch, the other end of the closing switch is connected with the first branch, and the other end of the opening switch is connected with the second branch.
Further, a remote control blocking circuit of transformer substation still includes the circuit breaker, be provided with the blocking node in the circuit breaker, the circuit breaker constitutes electric shutting with the line protection measurement and control device in a plurality of switch control return circuits.
The remote control locking circuit of the transformer substation at least has the following beneficial effects: the on-site operation of a plurality of isolating switches or disconnecting links is realized through a plurality of switch control loops which are connected in parallel; in addition, three different positions of the three-station change-over switch are set, and the three different positions of the three-station change-over switch correspond to remote operation, terminal box on-site operation and switch mechanism box on-site operation respectively, so that the programmed operation of the transformer substation is standardized, and the misoperation is reduced; and an internal signal node is arranged, so that remote control program operation is realized, and the personal safety of operators is guaranteed.
Drawings
The invention is further described with reference to the following figures and examples.
Fig. 1 is a circuit diagram of a switch control loop in a remote-controlled locking circuit of a transformer substation according to an embodiment of the present invention;
fig. 2 is a circuit diagram of a switch control loop in a remote-controlled locking circuit of a substation according to another embodiment of the present invention;
fig. 3 is a circuit diagram of a remote locking circuit of a transformer substation according to an embodiment of the present invention;
FIG. 4 is a schematic diagram of an informational node in a three-position transfer switch;
fig. 5 is an electrical blocking schematic diagram of the circuit breaker and a plurality of line protection measurement and control devices.
Detailed Description
This section will describe in detail the embodiments of the present invention, preferred embodiments of the present invention are shown in the attached drawings, which are used to supplement the description of the text part of the specification with figures, so that one can intuitively and vividly understand each technical feature and the whole technical solution of the present invention, but they cannot be understood as the limitation of the protection scope of the present invention.
In the description of the present invention, a plurality of means are one or more, a plurality of means are two or more, and the terms greater than, less than, exceeding, etc. are understood as not including the number, and the terms greater than, less than, within, etc. are understood as including the number. If the first and second are described for the purpose of distinguishing technical features, they are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.
In the description of the present invention, unless there is an explicit limitation, the words such as setting, installation, connection, etc. should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above words in combination with the specific contents of the technical solution.
Referring to fig. 1 and 3, an embodiment of the present invention provides a remote control locking circuit for a substation, including five switch control loops 100 connected in parallel, where the switch control loop 100 includes a three-position transfer switch 110 and a switching mechanism box 140, where the three-position transfer switch 110 is provided with a first transfer switch 111 for implementing remote control, a second transfer switch 112 for implementing on-site operation of a terminal box 130, and a third transfer switch 113 for implementing on-site operation of the switching mechanism box 140; one end of the first change-over switch 111, one end of the second change-over switch 112 and one end of the third change-over switch 113 are respectively directly connected to the switch mechanism box 140 through cables; a line protection measurement and control device 120 is arranged between the other end of the first change-over switch 111 and the switch mechanism box 140, a terminal box 130 is arranged between the other end of the second change-over switch 112 and the switch mechanism box 140, and the other end of the third change-over switch 113 is directly connected with the switch mechanism box 140 through a cable; a plurality of signal nodes are correspondingly arranged on the first transfer switch 111, the second transfer switch 112 and the third transfer switch 113.
In this embodiment, in-situ operation of multiple disconnectors or switches is achieved by multiple switch control loops 100 in parallel; in addition, three different positions of the three-position change-over switch 110 are set, the first change-over switch 111 is connected with the line protection measurement and control device 120 to realize remote operation, the second change-over switch 112 is connected with the terminal box 130 to realize local operation of the terminal box 130, and the third change-over switch 113 is directly connected with a power supply operation port of the switch mechanism box 140 to realize local operation of the switch mechanism box 140, so that the programmed operation of a transformer substation is standardized, and the misoperation is reduced; and an internal signal node is arranged, so that remote control program operation is realized, and the personal safety of operators is guaranteed.
Referring to fig. 4, specifically, the signal node a and the signal node B correspond to the first transfer switch 111, and transmit on/off information of the first transfer switch 111; the signal node C and the signal node D correspond to the second transfer switch 112, and transmit the on/off information of the second transfer switch 112; the signal node E and the signal node F correspond to the third transfer switch 113, and transmit the on/off information of the third transfer switch 113, thereby implementing the remote control program operation.
Referring to fig. 2, in another embodiment, the line protection measurement and control device 120 leads out a first branch 121 to be connected to a closing port of the switching mechanism box 140, and leads out a second branch 122 to be connected to an opening port of the switching mechanism box 140.
Further, the terminal box 130 is provided with a five-prevention lock 131, a closing switch 132 and an opening switch 133, one end of the five-prevention lock 131 is connected to the other end of the second switch 112, the other end of the five-prevention lock 131 is respectively connected to one end of the closing switch 132 and one end of the opening switch 133, the other end of the closing switch 132 is connected to the first branch 121, and the other end of the opening switch 133 is connected to the second branch 122.
It should be noted that the five-prevention lock 131 is a lock for high-voltage switchgear, and forces an operator to operate electrical equipment correctly according to a predetermined safe operation program, so as to avoid the occurrence of misoperation accidents and fully meet the requirements of five prevention. The closing switch 132 transmits a closing signal to a closing port of the switching mechanism box 140 through the first branch 121, and the opening switch 133 transmits an opening signal to an opening port of the switching mechanism box 140 through the second branch 122.
Referring to fig. 5, in another embodiment, the remote-control locking circuit for a transformer substation further includes a circuit breaker 150, a locking node 151 is disposed in the circuit breaker 150, and the circuit breaker 150 and the line protection measurement and control devices 120 in the five switch control loops 100 form an electrical lock; the on-off control of the knife switches of the line protection measurement and control devices 120 can be facilitated.
The above description is only a preferred embodiment of the present invention, and the present invention is not limited to the above embodiment, and the technical effects of the present invention can be achieved by the same means, which all belong to the protection scope of the present invention.
Claims (4)
1. A remote control locking circuit of a transformer substation is characterized by comprising a plurality of switch control loops which are connected in parallel, wherein each switch control loop comprises a three-position change-over switch and a switch mechanism box, and the three-position change-over switch is provided with a first change-over switch, a second change-over switch and a third change-over switch which respectively correspond to three different operation states; one end of the first change-over switch, one end of the second change-over switch and one end of the third change-over switch are respectively and directly connected with the switch mechanism box through cables; a line protection measurement and control device is arranged between the other end of the first change-over switch and the switch mechanism box, a terminal box is arranged between the other end of the second change-over switch and the switch mechanism box, and the other end of the third change-over switch is directly connected with the switch mechanism box through a cable; the first change-over switch, the second change-over switch and the third change-over switch are all correspondingly provided with a plurality of signal nodes.
2. The remote-control locking circuit of the substation according to claim 1, wherein the line protection measurement and control device leads out a first branch and a second branch which are respectively connected with the switching mechanism box.
3. The remote-control locking circuit of the transformer substation according to claim 2, wherein the terminal box is provided with a five-prevention lock, an opening switch and a closing switch, one end of the five-prevention lock is connected with the other end of the second change-over switch, the other end of the five-prevention lock is respectively connected with one end of the opening switch and one end of the closing switch, the other end of the closing switch is connected with the first branch, and the other end of the opening switch is connected with the second branch.
4. The remote-control locking circuit of the transformer substation according to claim 2, further comprising a circuit breaker, wherein a locking node is arranged in the circuit breaker, and the circuit breaker and line protection measurement and control devices in the switch control loops form an electric lock.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921075960.9U CN210074875U (en) | 2019-07-10 | 2019-07-10 | Remote control locking circuit of transformer substation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921075960.9U CN210074875U (en) | 2019-07-10 | 2019-07-10 | Remote control locking circuit of transformer substation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210074875U true CN210074875U (en) | 2020-02-14 |
Family
ID=69429729
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921075960.9U Active CN210074875U (en) | 2019-07-10 | 2019-07-10 | Remote control locking circuit of transformer substation |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210074875U (en) |
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2019
- 2019-07-10 CN CN201921075960.9U patent/CN210074875U/en active Active
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| TR01 | Transfer of patent right |
Effective date of registration: 20200508 Address after: 529000 9th Floor, 63 Shengli Xincun, Jiangmen City, Guangdong Province Patentee after: JIANGMEN ELECTRIC POWER DESIGN INSTITUTE Ltd. Address before: 529300 one of three buildings, 46 buildings and two buildings of Shuguang Road 46, three port area, Kaiping, Jiangmen, Guangdong. Patentee before: KAIPING HANLIAN ELECTRIC POWER DESIGN Co.,Ltd. |