CN215580379U - Low-voltage fault self-healing device - Google Patents
Low-voltage fault self-healing device Download PDFInfo
- Publication number
- CN215580379U CN215580379U CN202022720256.3U CN202022720256U CN215580379U CN 215580379 U CN215580379 U CN 215580379U CN 202022720256 U CN202022720256 U CN 202022720256U CN 215580379 U CN215580379 U CN 215580379U
- Authority
- CN
- China
- Prior art keywords
- switch
- inlet wire
- line
- power supply
- electric
- 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.)
- Active
Links
Images
Landscapes
- Supply And Distribution Of Alternating Current (AREA)
Abstract
The utility model provides a low pressure trouble self-healing device, including two at least electric room inlet wire mechanisms, electric room inlet wire mechanism includes two transformers, an inlet wire is all connected to every transformer, be equipped with the inlet wire switch on the inlet wire, two inlet wires pass through interconnecting link and connect, be equipped with female gang switch on the interconnecting link, the dress has been qualified for the next round of competitions on the inlet wire, go out the line and use the end-to-end connection, be equipped with the switch of being qualified for the next round of competitions on being qualified for the next round of competitions, connect through changeing the power supply line between two adjacent electric rooms in two at least electric rooms, be equipped with the commentaries on classics power supply switch on should changeing the power supply line, change the power supply switch, the switch of being qualified for the next round of competitions, the inlet wire switch, female gang switch all is connected with electric monitor terminal communication. The utility model improves the low-voltage grid structure and realizes the functions of automatically breaking the incoming and outgoing line switch and transferring the load of the cross-electricity house into power supply.
Description
Technical Field
The utility model relates to the industry of low-voltage 0.4kV power distribution systems, in particular to a low-voltage fault self-healing device.
Background
The method is characterized in that an information technology is used for transforming a traditional power grid, and is the core content of an intelligent power grid, intelligent technologies such as remote measurement and telecontrol in links such as electric energy production, high-voltage transmission, medium-voltage transformer substations and the like are popularized, but a terminal low-voltage power distribution station at the tail end of the power grid is rarely provided with an intelligent monitoring system, and nodes are distributed in the fields such as cities, factories, traffic, agricultural production and the like in large quantity, and whether the running state of the nodes is normal or not is directly related to the electricity safety of terminal users, and the stable power supply of the whole power grid can also be influenced.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a low-voltage fault self-healing device.
In order to solve the technical problems, the utility model adopts the following technical scheme:
the utility model provides a low pressure trouble self-healing device, including two at least electric room inlet wire mechanisms, electric room inlet wire mechanism includes two transformers, an inlet wire is all connected to every transformer, be equipped with the inlet wire switch on the inlet wire, two inlet wires pass through interconnecting link and connect, be equipped with female gang switch on the interconnecting link, the dress has been qualified for the next round of competitions on the inlet wire, go out the line and use the end-to-end connection, be equipped with the switch of being qualified for the next round of competitions on being qualified for the next round of competitions, connect through changeing the power supply line between two adjacent electric rooms in two at least electric rooms, be equipped with the commentaries on classics power supply switch on should changeing the power supply line, change the power supply switch, the switch of being qualified for the next round of competitions, the inlet wire switch, female gang switch all is connected with electric monitor terminal communication.
The power switching circuit is connected with the incoming line.
Each incoming line is connected with a plurality of outgoing lines, and each outgoing line is provided with an outgoing line switch.
The power supply switching switch, the wire outlet switch, the wire inlet switch and the bus coupler switch are respectively in communication connection with the electric monitoring terminal through 485 buses.
The voltage of the incoming line is 0.4 KV.
The utility model improves the low-voltage grid structure and realizes the functions of automatically breaking the incoming and outgoing line switch and transferring the load of the cross-electricity house into power supply.
Drawings
FIG. 1 is a schematic structural diagram of an embodiment of the present invention.
Detailed Description
For further understanding of the features and technical means of the present invention, as well as the specific objects and functions attained by the present invention, the present invention will be described in further detail with reference to the accompanying drawings and detailed description.
The utility model discloses a low-voltage fault self-healing device which comprises at least two electric room wire inlet mechanisms, wherein each electric room wire inlet mechanism comprises two transformers, each transformer is connected with a wire inlet, a wire inlet switch is arranged on each wire inlet, the two wire inlets are connected through a connecting circuit, a female connection switch is arranged on each connecting circuit, a wire outlet is arranged on each wire inlet and connected with an electric power utilization tail end, a wire outlet switch is arranged on each wire outlet, two adjacent electric rooms in the at least two electric rooms are connected through a transfer power supply line, a transfer power supply switch is arranged on each transfer power supply line, and the transfer power supply switch, the wire outlet switches, the wire inlet switches and the female connection switches are all in communication connection with an electric monitoring terminal.
The power supply switching switch, the wire outlet switch, the wire inlet switch and the bus coupler switch are respectively in communication connection with the electric monitoring terminal through 485 buses, so that remote monitoring and control are achieved, and relevant running state information is obtained in time.
The input power of the transformer can be 10KV usually, and the output power is 0.4 KV.
In this embodiment, two power distribution rooms are set, including: the first transformer is connected with an incoming line switch QF1, the second transformer is connected with an incoming line switch QF2, a bus-coupled switch QF3 is connected between the incoming line switch QF1 and the incoming line switch QF2, the incoming line switch QF1 and the incoming line switch QF2 are respectively connected with a plurality of branched outgoing lines, the third transformer is connected with the incoming line switch QF4, the fourth transformer is connected with the incoming line switch QF5, a bus-coupled switch QF6 is connected between the incoming line switch QF4 and the incoming line switch QF5, the incoming line switch QF4 and the incoming line switch QF5 are respectively connected with a plurality of branched outgoing lines, the incoming line switch QF2 and the incoming line switch QF4 are connected through a load conversion switch QF7, lines where the incoming line switches QF1, the incoming line switches QF2, the incoming line switches QF3 and the incoming line switch QF4 are located are all lines, and incoming line incoming voltage is 0.4 KV.
A plurality of branch outgoing lines are arranged according to needs, for example, an outgoing line switch QF11 and an outgoing line switch QF12 are arranged on the branch outgoing line correspondingly connected with the incoming line switch QF1, an outgoing line switch QF21 and an outgoing line switch QF22 are arranged on the branch outgoing line correspondingly connected with the incoming line switch QF2, an outgoing line switch QF41 and an outgoing line switch QF42 are arranged on the branch outgoing line correspondingly connected with the incoming line switch QF4, an outgoing line switch QF51 and an outgoing line switch QF52 are arranged on the branch outgoing line correspondingly connected with the incoming line switch QF5, and the branch outgoing line switches are respectively connected with the power utilization tail ends.
When the operation is carried out in a specific way,
when both QF1 and QF2 are in voltage loss, the lines are checked, when both incoming and outgoing loops have no fault alarm, QF1 and QF2 perform voltage loss tripping firstly, historical synchronous load current is calculated after QF1 and QF2 are switched off, if the sum of the historical synchronous load current of QF1, QF2 and QF4 is less than rated current of QF4, QF7 and QF3 are switched on, and power is converted and supplied by a third transformer; if the sum of the historical synchronous load currents of QF1, QF2 and QF4 is larger than rated current of QF4, cutting off 3-level or 2-level loads connected on the line according to the historical synchronous load rate, and closing QF7 and QF 3.
After the QF7 is switched on, when a transformer is in voltage loss, when the branch outgoing line and the incoming line switch have no fault, the sum of the load currents of the synchronous historical loads QF1, QF2, QF4 and QF5 is calculated, if the sum is smaller than the rated value of the incoming line switch needing to be supplied, the QF3 and the QF6 are switched on, and if the sum is larger than the rated value of the incoming line switch needing to be supplied, the corresponding 2-level load and the corresponding 3-level load on the branch outgoing line are switched on, and then the QF3 and the QF6 are switched on.
When the branch outlet loop has a fault, the corresponding switch is switched off, the fault type of the branch loop is accurately positioned, and the fault loop is isolated, so that the fault is isolated, and the influence of other branches is avoided.
When the incoming line switch trips, other electric rooms can be used for power conversion and supply treatment, and normal operation power supply is ensured.
The power supply switching operation is realized through the power supply switching switch. When the 10KV line of the transformer of the traditional electric room fails and no method is available for normally supplying power to the transformer, the power supply switching operation cannot be carried out between two transformers of the same electric room. And utilize the connection between a plurality of electric rooms, when the tripping operation of low pressure main inlet switch, the fault self-healing function is blocked earlier to the system, and when detecting the low pressure branch return circuit that breaks down to accurate isolation back, unblock fault self-healing function. Normal operation of the circuit is ensured through power conversion and supply operations of other electric rooms.
Although the present invention has been described in detail with reference to the embodiments, it will be apparent to those skilled in the art that modifications, equivalents, improvements, and the like can be made in the technical solutions of the foregoing embodiments or in some of the technical features of the foregoing embodiments, but those modifications, equivalents, improvements, and the like are all within the spirit and principle of the present invention.
Claims (5)
1. The utility model provides a low pressure trouble self-healing device, a serial communication port, including two at least electric room inlet wire mechanisms, electric room inlet wire mechanism includes two transformers, an inlet wire is all connected to every transformer, be equipped with the inlet wire switch on the inlet wire, two inlet wires pass through interconnecting link and connect, be equipped with female hookup switch on the interconnecting link, the dress has connect out the line on the inlet wire, go out the line and use the electric end-to-end connection, be equipped with the switch of being qualified for the next round of competitions, connect through changeing the power supply line between two adjacent electric rooms in two at least electric rooms, be equipped with the commentaries on classics power supply switch on this commentaries on classics power supply line, change the power supply switch, the switch of being qualified for the next round of competitions, the inlet wire switch, female hookup switch all is connected with electric monitor terminal communication.
2. The low-voltage fault self-healing device according to claim 1, wherein the power switching line is connected to an incoming line.
3. The low-voltage fault self-healing device according to claim 2, wherein each incoming line is connected to a plurality of outgoing lines, and each outgoing line is provided with an outgoing line switch.
4. The low-voltage fault self-healing device according to claim 3, wherein the power transfer switch, the outgoing switch, the incoming switch and the bus coupler switch are respectively in communication connection with the electrical monitoring terminal through 485 buses.
5. The low-voltage fault self-healing device according to claim 4, wherein the incoming line has a voltage of 0.4 KV.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022720256.3U CN215580379U (en) | 2020-11-20 | 2020-11-20 | Low-voltage fault self-healing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022720256.3U CN215580379U (en) | 2020-11-20 | 2020-11-20 | Low-voltage fault self-healing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215580379U true CN215580379U (en) | 2022-01-18 |
Family
ID=79814919
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022720256.3U Active CN215580379U (en) | 2020-11-20 | 2020-11-20 | Low-voltage fault self-healing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215580379U (en) |
-
2020
- 2020-11-20 CN CN202022720256.3U patent/CN215580379U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN111049270A (en) | Intelligent outdoor switch box and closed-loop I-shaped power distribution network thereof | |
| CN110932258A (en) | Diamond type distribution network | |
| CN110120664A (en) | A kind of reliable urban power distribution network grid structure of intelligence | |
| CN111082422A (en) | Composite grid structure capable of reliably supplying power | |
| CN112398125A (en) | Low-voltage fault self-healing device and control method thereof | |
| CN211377370U (en) | Intelligent distributed power distribution terminal with communication and optical fiber differential protection functions | |
| CN215580379U (en) | Low-voltage fault self-healing device | |
| CN211428993U (en) | Remote switching device and system for disconnecting link power supply of transformer substation | |
| CN218783620U (en) | Three-incoming-line one-bus-coupler automatic change-over switch electrical interlocking control circuit | |
| CN108923393B (en) | Method for isolating faults in station of station integrated power distribution terminal | |
| CN110635562A (en) | Self-adaptive area spare power automatic switching device and self-adaptive area spare power automatic switching method | |
| CN113904326B (en) | Urban distribution network wiring mode | |
| CN201717678U (en) | Automatic distribution network monitoring terminal | |
| CN215733469U (en) | Ring network self-healing system based on optical fiber differential | |
| CN112510706B (en) | Same-mother loop closing circuit for 10kV power distribution network | |
| CN213151713U (en) | Multi-power-supply emergency quick access box system | |
| CN210780123U (en) | Fully centralized monitoring protection device for electrical equipment of wind power booster station | |
| CN207504574U (en) | A kind of electric power system of based superconductive circuit | |
| CN211182805U (en) | Wiring structure of low-voltage side of transformer substation | |
| CN216720910U (en) | Direct-current power supply circuit | |
| CN218633442U (en) | Auxiliary transformer dual-power switching system in photovoltaic box transformer substation | |
| CN211556980U (en) | Intelligent outdoor switch box and closed-loop I-shaped power distribution network thereof | |
| CN211628528U (en) | Distribution automation presentation device | |
| CN211859731U (en) | No main distributed bus protection device based on 5G communication | |
| CN218352256U (en) | Power standby power supply circuit for extra-high voltage converter station |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20220616 Address after: 511500 floor 2 of Guangdong Beijiang switchgear plant, No. 7 District, Qingyuan Economic Development Zone, Guangdong Province Patentee after: Qingyuan Xinneng Power Engineering Co.,Ltd. Address before: 511517 floors 2-4, comprehensive building of Guangdong Beijiang Switchgear Factory, No. 7 District, economic development zone, Qingyuan City, Guangdong Province Patentee before: Qingyuan Xinneng Power Engineering Co.,Ltd. high tech Division |