CN202127284U - Automatic switching device of substation control power supply - Google Patents
Automatic switching device of substation control power supply Download PDFInfo
- Publication number
- CN202127284U CN202127284U CN2011202565323U CN201120256532U CN202127284U CN 202127284 U CN202127284 U CN 202127284U CN 2011202565323 U CN2011202565323 U CN 2011202565323U CN 201120256532 U CN201120256532 U CN 201120256532U CN 202127284 U CN202127284 U CN 202127284U
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- circuit breaker
- power
- supply system
- electric substation
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Abstract
An automatic switching device of a substation control power supply comprises three breakers, a power-driven operation mechanism, an automatic switching control device and two power supply systems. Each power supply system is connected with one breaker, another breaker is connected between two sections of buses, and the two power supply systems are respectively connected with the two sections of buses. The automatic switching control device comprises an operation mode switcher and a delay controller. The automatic switching device determines the closing and breakdown conditions of the three breakers through the operation mode switcher of the automatic switching control device according to different operation modes of a system, and further controls motion of the power-driven operation mechanism on the breakers, thereby effectively improving reliability, stability and safety of the system.
Description
Technical field
The utility model relates to electric substation's control power-supply device technical field, particularly a kind of electric substation control power switchover device.
Background technology
The control power supply is the power source of the various protections of electric substation, operation.In electric substation, it is the power source of various automated system executive component execution commands.In case power supply out of hand, the various automation signal instructions of electric substation will all can't be carried out, and cause electric substation to be in runaway condition.Be in the electric substation of runaway condition, it no longer possesses various operating functions such as the tripping operation of comprising, has also just lost the most basic function of electric substation.
How to ensure that electric substation's control power supply can reliable work be a difficult problem at crucial moment.
Automatic bus is the visual plant that ensures power network safety operation; Its devoting rate is the important symbol of reflection operation of power networks level; Its devoting rate is not high can influence power network safety operation, when it is in dead status, if when fault appears unusually perhaps in power supply unit; To jeopardize power grid security, even cause the accident.
Thereby used power supply is supplied power by two or more independent current sources in important electric substation, and all installs control power switchover device each other, has high reliability to guarantee operating power.Because the difference in the period of construction, the logic function of each electric substation's website designs differently, and control power switchover device has bigger design difference; All be to concrete transformer station's design; Be difficult to like this promote, also limited to the applicability of system operation mode, need design corresponding Different control power switchover device respectively for different operational modes; Brought bigger difficulty and workload, its design standard of improving in urgent need of strengthening for the operational management work of automatic bus.
The utility model content
The technical problem that the utility model will solve provides a kind of electric substation's control power switchover device that can proper operation under various ruuning situations.
The technical scheme of the utility model is:
A kind of electric substation control power switchover device; Comprise three circuit breakers, motor-operating mechanism, automatic switching control device and two-way power-supply system; All be connected to a circuit breaker in the power-supply system of wherein said every road; Another circuit breaker is connected between two sections buses, and said two-way power-supply system connects said two sections buses respectively, and wherein said automatic switching control device comprises operational mode switch and delay controller.
The effect of said operational mode switch is: under the situation of the disconnection of the circuit breaker between two sections buses, two sections bus off-the-line operations; Judge that wherein one tunnel power-supply system breaks down and causes itself and the bus loss of pressure that is connected; The control motor-operating mechanism breaks off the circuit breaker of corresponding decompression bus, the circuit breaker between closed then two sections buses; Perhaps break off at the circuit breaker of any one tunnel power-supply system, under the situation of other two breaker closings; Judgement close circuit breaker place power-supply system breaks down and causes two sections equal decompressions of bus; The control motor-operating mechanism breaks off the circuit breaker of the power-supply system that breaks down, then the circuit breaker of closed another power-supply system.
Said circuit breaker is a primary cut-out, and all has manual operation switch.Primary cut-out has arc quenching characteristic, and when system normally moved, it can cut off and connect the zero load and the load current of circuit and various electric equipments; When system broke down, it cooperated with relaying protection, and ability is the disengagement failure electric current rapidly, to prevent expansion accident scope.Primary cut-out is highly sensitive simultaneously, has improved the precision of whole device, has guaranteed the reliability service of device.
Said operational mode switch is to be the automatic controller of core and the controlling organization of band electromechanical linkage with the single-chip microcomputer.The operational mode switch be a kind of perfect performance, safe and reliable, automaticity is high, the scope of application is wide.Be applicable in the electric power system of two-way power supply, because of one road power supply break down (have a power failure, under-voltage, overvoltage, the phase failure, frequency shift (FS)) carry out the automatic switchover between the power supply, to guarantee the reliability and the fail safe of power supply, realize that unattended operation supplies power continuously.
Said delay controller is to be the timer of core with the single-chip microcomputer, is used to control the operate time of motor-operating mechanism.
The beneficial effect of the utility model is: the utility model is judged the closed situation and the failure condition of said three circuit breakers through the operational mode switch in the automatic switchover electrical installation according to the different running method of system, and then controls the action of motor-operating mechanism to circuit breaker.Make whole system under various faults, still can bring into play due effect, and realize that intelligence switches, guaranteeing that transformation station power supply is hauled oneself willingly into can both be correctly, the accurate startup, has realized that transformation station power supply is intelligentized to be equipped with throwing.It effectively raises reliability, stability, the fail safe of system.
Description of drawings
Fig. 1 is the structural representation of the utility model.
Embodiment
According to accompanying drawing, the utility model is carried out detailed narration.
Accompanying drawing 1 is the specific embodiment of the utility model; Said electric substation control power switchover device; Comprise three circuit breaker Q F1, QF2, QF3, motor-operating mechanism 1, automatic switching control device 2 and two-way power-supply system; Be connected to circuit breaker Q F1, QF2 respectively among wherein said two-way power-supply system U1 and the U2, circuit breaker Q F3 is connected on two sections buses 3, between 4, and said two-way power-supply system connects said two sections buses 3 respectively; 4, wherein said automatic switching control device 2 comprises operational mode switch 2.1 and delay controller 2.2.Wherein said circuit breaker Q F1, QF2, QF3 are primary cut-out.Wherein U3 and U4 represent the voltage of two sections buses 3,4 respectively.
The effect of said operational mode switch is: under the situation of the disconnection of the circuit breaker between two sections buses, two sections bus off-the-line operations; Judge that wherein one tunnel power-supply system breaks down and causes itself and the bus loss of pressure that is connected; The control motor-operating mechanism breaks off the circuit breaker of corresponding decompression bus, the circuit breaker between closed then two sections buses; Perhaps break off at the circuit breaker of any one tunnel power-supply system, under the situation of other two breaker closings; Judgement close circuit breaker place power-supply system breaks down and causes two sections equal decompressions of bus; The control motor-operating mechanism breaks off the circuit breaker of the power-supply system that breaks down, then the circuit breaker of closed another power-supply system.
By technique scheme, the utility model has three kinds of operational modes, as follows:
1, circuit breaker Q F3 breaks off, the operation of bus 3,4 off-the-lines, and two power-supply system U1 and U2 supply power simultaneously.Under this running status, if 1# power supply U1 fault causes bus 3 decompressions, operational mode switch control this moment motor-operating mechanism 1 cut-off breaker QF1, close circuit breaker QF3 restores electricity bus 3 then.
2, circuit breaker Q F1 and QF3 are closed, and circuit breaker Q F2 breaks off.Give two buses 3,4 power supplies by 1# power supply U1 during normal the operation.Under this running status, if 1# power supply U1 fault causes all decompressions of two sections buses 3,4, operational mode switch control this moment motor-operating mechanism 1 cut-off breaker QF1, close circuit breaker QF2 makes 2# power supply U2 give bus 3,4 power supplies then.
3, circuit breaker Q F2 and QF3 are closed, and circuit breaker Q F1 breaks off.Give two buses 3,4 power supplies by 2# power supply U2 during normal the operation.Under this running status, if 2# power supply U2 fault causes all decompressions of two sections buses 3,4, operational mode switch control this moment motor-operating mechanism 1 cut-off breaker QF2, close circuit breaker QF1 makes 1# power supply U1 give bus 3,4 power supplies then.
Claims (7)
1. electric substation controls the power switchover device; Comprise circuit breaker, motor-operating mechanism, automatic switching control device and two-way power-supply system; It is characterized in that: said circuit breaker has three, all is connected to a circuit breaker in the wherein said two-way power-supply system, and another circuit breaker is connected between two sections buses; Said two-way power-supply system connects said two sections buses respectively, and wherein said automatic switching control device comprises operational mode switch and delay controller.
2. electric substation according to claim 1 control power switchover device; It is characterized in that: said operational mode switch can be under the situation of the disconnection of the circuit breaker between two sections buses, two sections bus off-the-line operations; Judge that wherein one tunnel power-supply system breaks down and causes itself and the bus loss of pressure that is connected; The control motor-operating mechanism breaks off the circuit breaker of corresponding decompression bus, the circuit breaker between closed then two sections buses.
3. electric substation according to claim 1 control power switchover device; It is characterized in that: said operational mode switch can break off at the circuit breaker of any one tunnel power-supply system, under the situation of other two breaker closings; Judgement close circuit breaker place power-supply system breaks down and causes two sections equal decompressions of bus; The control motor-operating mechanism breaks off the circuit breaker of the power-supply system that breaks down, then the circuit breaker of closed another power-supply system.
4. electric substation according to claim 1 control power switchover device, it is characterized in that: said circuit breaker is a primary cut-out.
5. according to claim 1 or 4 described electric substation control power switchover devices, it is characterized in that: said circuit breaker has manual operation switch.
6. electric substation according to claim 1 control power switchover device is characterized in that: said operational mode switch is to be the automatic controller of core and the controlling organization of band electromechanical linkage with the single-chip microcomputer.
7.
RootAccording to the described electric substation of claim 1 control power switchover device, it is characterized in that: said delay controller is to be the timer of core with the single-chip microcomputer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202565323U CN202127284U (en) | 2011-07-20 | 2011-07-20 | Automatic switching device of substation control power supply |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202565323U CN202127284U (en) | 2011-07-20 | 2011-07-20 | Automatic switching device of substation control power supply |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202127284U true CN202127284U (en) | 2012-01-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011202565323U Expired - Fee Related CN202127284U (en) | 2011-07-20 | 2011-07-20 | Automatic switching device of substation control power supply |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202127284U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112018880A (en) * | 2020-08-28 | 2020-12-01 | 泰豪科技股份有限公司 | Diesel generator set interlocking device and control method thereof |
-
2011
- 2011-07-20 CN CN2011202565323U patent/CN202127284U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112018880A (en) * | 2020-08-28 | 2020-12-01 | 泰豪科技股份有限公司 | Diesel generator set interlocking device and control method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120125 Termination date: 20120720 |