CN208797557U - A kind of new type auto reclosing device - Google Patents
A kind of new type auto reclosing device Download PDFInfo
- Publication number
- CN208797557U CN208797557U CN201821199391.4U CN201821199391U CN208797557U CN 208797557 U CN208797557 U CN 208797557U CN 201821199391 U CN201821199391 U CN 201821199391U CN 208797557 U CN208797557 U CN 208797557U
- Authority
- CN
- China
- Prior art keywords
- voltage
- breaker
- mutual inductor
- power supply
- reclosing
- 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.)
- Expired - Fee Related
Links
Landscapes
- Emergency Protection Circuit Devices (AREA)
Abstract
The utility model discloses a kind of new type auto reclosing devices, it applies on the overhead transmission line road with bilateral source, the overhead transmission line has the side M power supply and the side N power supply, the described side M power supply one end is connected with first breaker one end, the other end is connected with the first voltage mutual inductor for measuring the side M power rail voltage, the first breaker other end is connected with the second voltage mutual inductor for measuring the side M power supply line trackside voltage, the other end of the first voltage mutual inductor and second voltage mutual inductor is connect with first synchronizing voltage detector one end, the second voltage mutual inductor other end is also connected with one end of low voltage detector, the first synchronizing voltage detector and the other end of low voltage detector are connect with OR circuit one end.Compared with prior art, the utility model can be effectively controlled the normal work of reclosing circuit, be easy to implement the remote automation monitoring and control in power station.
Description
Technical field
The utility model relates to electrical equipment technical fields, and in particular to a kind of new type auto reclosing device.
Background technique
Technical field of electric power, electric brake or transmission line of electricity are easy by natural conditions, thunder and lightning or blow in electric system
It influences, causes to trip, when tripping if the above problem, closing a floodgate again still be can be used, and manpower is needed to go to close
Lock；But if it is fault, if needing maintenance, if closed a floodgate again, bigger damage may be caused to circuit, increased
Add insecurity factor.
The use of automatic reclosing is the objective requirement of system the safe and economic operation, and the most of failure of overhead transmission line is
Instantaneous, the mainly sudden strain of a muscle as caused by thunder and lightning etc. is fallen.If automatic reclosing can be used, the safety of power supply is not only improved,
Loss of outage, the automatic normal operating condition for restoring whole system are reduced, and its transient stability is also improved to high-voltage fence
Level increases power transmission capacity.In addition to this, if in system a set of pieces because failure disconnect due to cause other associated powers to set
Standby overload, then can make system restore original state automatically, it is excessively negative both to have avoided equipment within the permission time of overload
Lotus, but first predetermined control condition is restored to operate normally automatically with operation program on time.
Utility model content
The technical problems to be solved in the utility model is to overcome deficiency in the prior art, provides a kind of new type auto coincidence
Brake gear can not only be closed a floodgate again in non-technical fault trip by the realization that is delayed, and avoided being repeated several times tripping and be made to electric appliance
At damage, and can technical failure trip when, be latched lock circuit, avoid closing a floodgate again, increase safety.
In order to achieve the above objectives, the technical solution adopted in the utility model are as follows: a kind of new type auto reclosing device, application
On the overhead transmission line road with bilateral source, which has the side M power supply and the side N power supply, the side M power supply
One end is connected with first breaker one end, and the other end is connected with the first voltage mutual inductor for measuring the side M power rail voltage,
The first breaker other end is connected with the second voltage mutual inductor for measuring the side M power supply line trackside voltage, and described first
The other end of voltage transformer and second voltage mutual inductor is connect with first synchronizing voltage detector one end, the second voltage
The mutual inductor other end is also connected with one end of low voltage detector, the first synchronizing voltage detector and low voltage detector
The other end is connect with OR circuit one end, and described OR circuit one end is connect with the first reclosing circuit on one side, and described first
Reclosing circuit on one side is connect with first breaker one end；The described side N power supply one end is connected with second breaker one end, the other end
It is connected with the 4th voltage transformer for measuring the side N power rail voltage, the second breaker other end, which is connected with, to be used for
Measure the tertiary voltage mutual inductor of the side N power supply line trackside voltage, the tertiary voltage mutual inductor and the 4th voltage transformer it is another
One end is connect with second synchronizing voltage detector one end, the second synchronizing voltage detector other end and the second reclosing electricity
The connection of road one end, the second reclosing circuit other end are connect with second breaker one end；The first breaker other end
It is connected with the second breaker other end.
Further, the new type auto reclosing device further includes microprocessor, the low voltage detector, described
The voltage value that one synchronous voltage detector and the second synchronizing voltage detector detect is transferred to microprocessor, the micro process
Device is handled by analysis, is controlled the first reclosing circuit and the second reclosing circuit, thus to the first breaker and the
The combined floodgate of two breakers synchronizes control.
The above-mentioned technical proposal that the utility model uses makes auto recloser have detection synchronous with detection without pressing
Function is first overlapped the first breaker of calibrating route no-voltage after the two sides breaker of power circuit trips because of failure,
It is overlapped the second synchronous breaker of calibrating afterwards, such reclosing mode will not cause to impact, will not cause to electrical equipment
Power system oscillation.
Used in the utility model duplicate supply line be arranged auto recloser, to improve power supply reliability and
Stability of power system has great importance, it is often more important that reduces power circuit transient fault power off time, improves
The economical operation in power station.Compared with prior art, the utility model uses advanced computer microprocessing, effectively controls
The normal work of reclosing circuit processed is easy to implement the remote automation monitoring and control in power station, meets modernization power station " nothing
People is on duty, few man on duty " design concept, provide reliable guarantee for the safe and reliable, efficient of power station, economical operation.
Detailed description of the invention
With reference to the accompanying drawings and embodiments, the structure and features of the utility model is described further.
Fig. 1 is the operation principle schematic diagram of the utility model.
Specific embodiment
Attached drawing 1 is an embodiment of the present invention, discloses a kind of new type auto reclosing device, applying has
The overhead transmission line road of bilateral source, the overhead transmission line have the side M power supply and the side N power supply, and the side M is set as surveying without pressure, the side N
It is set as synchronous side, the described side M power supply one end is connected with first one end breaker DL1, and the other end is connected with for measuring the side M power supply
The first voltage mutual inductor PT1 of busbar voltage, the first breaker DL1 other end are connected with for measuring the side M power circuit
The other end of first voltage the mutual inductor PT2, the first voltage mutual inductor PT1 and second voltage mutual inductor PT2 of side voltage are equal
It is connect with first one end synchronizing voltage detector U-U1, the second voltage mutual inductor PT2 other end is also connected with low-voltage inspection
Survey one end of device U <, the other end of the first synchronizing voltage detector U-U1 and low voltage detector U < are and OR circuit
One end connection, described OR circuit one end connect with the first reclosing circuit on one side, the first reclosing circuit on one side and the
The connection of one one end breaker DL1；
The described side N power supply one end is connected with second one end breaker DL2, and the other end is connected with female for measuring the side N power supply
4th voltage transformer pt 4 of line voltage, the second breaker DL2 other end are connected with for measuring the side N power supply line trackside
The other end of tertiary voltage the mutual inductor PT3, the tertiary voltage mutual inductor PT3 of voltage and the 4th voltage transformer pt 4 with
The connection of second synchronizing voltage one end detector U-U2, the second synchronizing voltage detector U-U2 other end and the second reclosing electricity
The connection of road one end, the second reclosing circuit other end are connect with second one end breaker DL2；The first breaker DL1
The other end is connected with the second breaker DL2 other end.
Further, the new type auto reclosing device further includes microprocessor, low voltage detector U <, institute
It states the voltage value that the first synchronizing voltage detector U-U1 and the second synchronizing voltage detector U-U2 are detected and is transferred to micro process
Device, the microprocessor are handled by analysis, are controlled the first reclosing circuit and the second reclosing circuit, thus to the
The combined floodgate of one breaker DL1 and the second breaker DL2 synchronize control.
The above embodiments of the present invention is in specific works:
When transient fault occurs for k point on power circuit, the protective relaying device movements of route two sides and tripping the
One breaker DL1 and the second breaker DL2, k point failure are eliminated, and the low voltage detector U < of the side bus M is detected at this time
After losing voltage on route, the first reclosing circuit is connected to micro process order, is overlapped the first breaker DL1；When the first breaker
After DL1 closes a floodgate, detecting in the side bus N and charged on route, the side N the second synchronizing voltage detector U-U2 starts to work,
When breaker two sides meet synchronous condition, the second breaker DL2 is just closed, which restores normal power supply；If the side N
It breaks down again on route in synchronous detection, the relay protection of the side M acts the first breaker of tripping DL1 again, such case
Second breaker DL2 of the side lower N cannot close a floodgate again；
When permanent fault occurs on power circuit, route two sides breaker trips after excision failure, the detection of the side M
Be overlapped upper first breaker DL1 after to route no-voltage, but due on route happens is that permanent fault (such as breaking), M
Side cannot be closed a floodgate always by the second breaker DL2 of the protective relaying device side the first breaker of tripping DL1, N again, this
Sample, disengagement failure point short circuit current, the second breaker DL2 only cut off first short circuit electricity to the first breaker DL1 twice in succession
Stream, two sides route can not achieve synchronization at this time, be unable to synchroswitching；
Circuit breaker trip is caused due to accidentally touching or malfunctioning, when mistrip occurs at the side N (synchronous side), detection is same
Step condition closes the second breaker DL2 when meeting, transmission line of electricity restores normal power supply operation；If mistrip occurs in the side M
(no pressure side), since automatic reclosing also is provided with the first synchronizing voltage detector U-U1 simultaneously without pressure side, when meeting synchronous condition
It can the first breaker DL1 on automatic reclosing.
Above-described embodiment that the utility model uses, the function for making auto recloser have detection synchronous with detection without pressure
Can, after the two sides breaker of power circuit trips because of failure, it is first overlapped the first breaker of calibrating route no-voltage, after
It is overlapped the second synchronous breaker of calibrating, such reclosing mode will not cause to impact to electrical equipment, will not cause electricity
Force system oscillation.
It above are only several specific embodiments of the utility model, but the design concept of the utility model is not limited to
This, all non-essential modifications to the present invention made by this concept should belong to infringement scope of protection of the utility model
Behavior.
Claims (2)
1. a kind of new type auto reclosing device is applied on the overhead transmission line road with bilateral source, the overhead transmission line
Road has the side M power supply and the side N power supply, it is characterised in that: the described side M power supply one end is connected with first breaker one end, the other end
It is connected with the first voltage mutual inductor for measuring the side M power rail voltage, the first breaker other end, which is connected with, to be used for
Measure the second voltage mutual inductor of the side M power supply line trackside voltage, the first voltage mutual inductor and second voltage mutual inductor it is another
One end is connect with first synchronizing voltage detector one end, and the second voltage mutual inductor other end is also connected with low voltage test
The other end of one end of device, the first synchronizing voltage detector and low voltage detector is connect with OR circuit one end, institute
It states OR circuit one end to connect with the first reclosing circuit on one side, the first reclosing circuit on one side and first breaker one end
Connection；The described side N power supply one end is connected with second breaker one end, and the other end is connected with for measuring the side N power rail voltage
The 4th voltage transformer, the second breaker other end be connected with the third for measuring the side N power supply line trackside voltage electricity
Press mutual inductor, the other end of the tertiary voltage mutual inductor and the 4th voltage transformer with second synchronizing voltage detector one end
Connection, the second synchronizing voltage detector other end are connect with the second reclosing circuit on one side, the second reclosing circuit
The other end is connect with second breaker one end；The first breaker other end is connected with the second breaker other end.
2. new type auto reclosing device according to claim 1, it is characterised in that: the new type auto reclosing device
It further include microprocessor, the low voltage detector, the first synchronizing voltage detector and the inspection of the second synchronizing voltage detector
The voltage value measured is transferred to microprocessor, and the microprocessor is handled by analysis, to the first reclosing circuit and second
Reclosing circuit is controlled, to synchronize control to the combined floodgate of the first breaker and the second breaker.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821199391.4U CN208797557U (en) | 2018-07-27 | 2018-07-27 | A kind of new type auto reclosing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821199391.4U CN208797557U (en) | 2018-07-27 | 2018-07-27 | A kind of new type auto reclosing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208797557U true CN208797557U (en) | 2019-04-26 |
Family
ID=66203574
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821199391.4U Expired - Fee Related CN208797557U (en) | 2018-07-27 | 2018-07-27 | A kind of new type auto reclosing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208797557U (en) |
-
2018
- 2018-07-27 CN CN201821199391.4U patent/CN208797557U/en not_active Expired - Fee Related
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103746353A (en) | Self-healing control system of intelligent distribution network and working method thereof | |
| CN108776283A (en) | A kind of CT not exclusively lower power distribution network single-phase disconnection fault judgment method of configuration with judge system | |
| CN110912114A (en) | High-safety low-voltage direct current system | |
| CN103762554A (en) | Fault detecting method for side windings of three-phase three-winding transformer | |
| CN101714756B (en) | Equivalent negative sequence impedance-based distributed generator islanding protection method | |
| CN102005720A (en) | Neutral line breakage detection protection method and device | |
| CN103036250A (en) | Island detection and control method of distributed energy resource of safety automatic control system | |
| CN103869202B (en) | The detection method of the disconnected phase of high voltage side of transformer and system | |
| Sarwagya et al. | An extensive review on the state-of-art on microgrid protection | |
| CN202712819U (en) | Protection system capable of realizing breaker failure triggering relevant trips of interconnecting transformer | |
| CN109980612A (en) | A kind of method that line differential protection realizes weak feedback starting using zero-sequence fault component | |
| CN208797557U (en) | A kind of new type auto reclosing device | |
| CN201515205U (en) | Earth leakage checking protective circuit | |
| CN106340954A (en) | Method for identifying line breaking of power supply line and switching to standby power supply | |
| CN206759031U (en) | A kind of improved power plant's low-voltage power supply system ground protection warning device | |
| Buque et al. | Modelling and simulation of reverse power relay for loss of mains protection of distributed generation in microgrids | |
| Comech et al. | Protection in distributed generation | |
| CN209329687U (en) | A kind of traction substation emergency protection system | |
| CN206542181U (en) | Intelligent non-pressure release coil controller | |
| CN203191490U (en) | A phase failure detecting system of the high voltage side of a transformer | |
| CN202940577U (en) | Safe automatic control system for islanding detection of distributed energy | |
| CN207200251U (en) | A kind of power distribution network self-powered protective relaying device | |
| CN110426595A (en) | One secondary circuit failure detection device of ring-main unit | |
| CN104267344A (en) | Breaker trip detection method based on predicated mutation information | |
| CN205489439U (en) | Novel based on PLC digital intelligent formula flame -proof type phase sensitivity short -circuit protection system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190426 Termination date: 20190727 |