CN206422507U - Realize the device of reclosing checkout voltage - Google Patents
Realize the device of reclosing checkout voltage Download PDFInfo
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- CN206422507U CN206422507U CN201720142069.7U CN201720142069U CN206422507U CN 206422507 U CN206422507 U CN 206422507U CN 201720142069 U CN201720142069 U CN 201720142069U CN 206422507 U CN206422507 U CN 206422507U
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- 230000001012 protector Effects 0.000 claims abstract description 36
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- 230000003111 delayed effect Effects 0.000 description 2
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- 230000009286 beneficial effect Effects 0.000 description 1
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Abstract
The utility model is related to a kind of device for realizing reclosing checkout voltage; the technical problem of reclosing checkout voltage protection can not effectively be realized in the case where distributed power source is accessed by which solving existing transmission line of electricity system; it includes charged display device and reclosing protector; reclosing protector is provided with reclosing exit relay and Logic control module, and Logic control module includes the first OR gate logic unit, first and gate logic unit, second and gate logic unit and the second OR gate logic unit；The intake of the node output unit of charged display device as the second OR gate logic unit input signal, the output end of second OR gate logic unit is connected with second with the input of gate logic unit, the output end of first OR gate logic unit is connected with first with gate logic unit input, first is connected with the output end of gate logic unit with second with the input of gate logic unit, and second is connected reclosing exit relay with the output end of gate logic unit.The utility model is widely used in power system.
Description
Technical field
The utility model is related to power domain, in particular to a kind of device for realizing reclosing checkout voltage.
Background technology
Along with the fast development of the clean energy resourcies such as wind energy, solar energy, a large amount of distributed power sources need to access power system,
Distributed power source is general to access power system by voltage class such as 35kV, 10kV, 380V.Due to the access of distributed power source,
Many transmission lines of electricity become bilateral source by single-side power, and the requirement of the system side reclosing method of operation is checkout voltage coincidence system,
One was met to trouble point insulation recovery certain time after small power supply excision, then carried out reclosing, improved the success rate of reclosing；
Two be to prevent from carrying out non-Switching Synchronization, and the risk of impact is produced to small power supply.
, can be in system side wiring PT in order to meet reclosing checkout voltage requirement, circuit PT effect is withdrawal string
The foundation that one voltage on road closes a floodgate as automatic reclosing checkout voltage.In this case, as shown in figure 1, circuit is normally transported
During row, when jump, reclosing protector action occur in failure protection act, or switch.Detailed process is, if
There is the OR gate logic unit 1 of Logic control module in jump, reclosing protector in failure protection act or switch
Part meets output high level, and this high level signal enters and gate logic unit 2；If the maximum phase current value now in three-phase current
Imax is less than given definite value Iz, and reclosing protector charging complete, then it is high to meet output with the condition of gate logic unit 2
Level is to next and gate logic unit 3；If the magnitude of voltage Ux that now reclosing protector is measured by circuit PT be less than to
Fixed definite value Uxz, then meet output high level with the condition of gate logic unit 3, is passed through with the high level signal that gate logic unit 3 is exported
Cross and adjust the reclosing delay that unit 4 is adjusted, then drive reclosing exit relay 5 to act again, make reclosing protection dress
Outlet action is put, recovers the power supply to faulty line.
However, the switch cubicle that transformer station uses at present, circuit PT, such as 35kV switch cubicles can not directly be installed additional by being substantially all
Need to carry out integral replacing to switch cubicle, implement highly difficult, cost is very high；10kV switch cubicles can not also due to space limitation
Wiring PT.It can be seen that, wiring PT technical scheme can not effectively meet reclosing checkout voltage requirement.Therefore, it is distributed
The access of power supply causes transmission line of electricity system side reclosing function by many limitations, to reduce the reliability of power supply.
The content of the invention
The utility model is exactly can not have in the case where distributed power source is accessed to solve existing transmission line of electricity system
Effect realizes that the technical problem of reclosing checkout voltage protection makes reclosing function is unrestricted to realize that reclosing is examined there is provided one kind
Device without pressure.
The technical solution of the utility model is to provide a kind of device for realizing reclosing checkout voltage, including powered display dress
Put and reclosing protector, reclosing protector is provided with and adjusts unit, reclosing exit relay and Logic control module,
Logic control module includes the first OR gate logic unit, first and gate logic unit, second and gate logic unit and the second OR gate
Logic unit；Charged display device is provided with node output unit, and the intake of the node output unit is used as the second OR gate logic
The input signal of unit, the output end of the second OR gate logic unit is connected with second with the input of gate logic unit, first or
The output end of gate logic unit is connected with first with gate logic unit input, first with the output end and second of gate logic unit
It is connected with the input of gate logic unit, second exports relay with the output end of gate logic unit by adjusting unit with reclosing
Device is connected.
Preferably, Logic control module also include the first comparing unit and the second comparing unit, the first comparing unit it is defeated
Go out signal as the first input signal with gate logic unit, the output signal of the second comparing unit is used as the second OR gate logic list
The input signal of member.
The beneficial effects of the utility model are：In the case where not increasing any equipment, to not wiring PT electric power
System, can also make reclosing protector realize that checkout voltage overlaps protection processing, improve the power supply reliability of circuit.
The utility model further feature, by the description of detailed description below, is clearly stated that.
Brief description of the drawings
Fig. 1 is existing reclosing protector action logic figure；
Fig. 2 is the electrical schematic diagram that charged display device, reclosing protector and circuit PT match work；
Fig. 3 is reclosing protector action logic figure of the present utility model.
Symbol description in figure：
1. OR gate logic unit；2. with gate logic unit；3. with gate logic unit；4. adjust unit；5. reclosing is exported
Relay；10. a major loop；20. charged display device, 21. sensors；22. display unit；23. node output unit；
30. reclosing protector, 31. first OR gate logic units, 32. first with gate logic unit, 33. second with gate logic list
Member, 34. second OR gate logic units, 35. adjust unit, 36. reclosing exit relays；40. circuit PT.
Embodiment
Referring to the drawings, the utility model is described in further detail with specific embodiment.
As shown in Fig. 2 existing all switch cabinet equipments all install charged display device, charged display device is used to monitor
Circuit has no-voltage, is to show whether electrical equipment carries the indicative safety device of working voltage.
Charged display device possesses two groups of output nodes, and a group node is used for five anti-interlockings and used, by another group of standby section
Point is connected to reclosing protector and used cooperatively.
Charged display device 20 includes sensor 21, display unit 22, node output unit 23, and sensor 21 is with once leading
Loop 10 is connected, and display unit 22 is connected with sensor 21, and node output unit 23 is connected with display unit 22.Node output is single
Member 23 is provided with two groups of output nodes, and one of which is used to be connected with five anti-interlockings, another group with reclosing protector 30
Logic control module is connected.
After route protection acts tripping circuit breaker, reclosing protector 30 enters reclosing logic, works as distributed electrical
The action of source automatic safety device is by after own excision, and charged display device 20 can detect circuit and be met without press strip part, now
The output contact of node output unit 23 is closed, and reclosing protector 30 is received after this opens, and is delayed by the reclosing adjusted,
Reclosing outlet loop is acted, and recovers the power supply to circuit.
As shown in figure 3, increasing an OR gate logic unit, i.e. the second OR gate on the basis of existing reclosing protector
Logic unit 34.Logic control module in reclosing protector 30 is patrolled including the first OR gate logic unit 31, first with door
Collect unit 32, second and gate logic unit 33, the second OR gate logic unit 34.Using the intake of charged display device 20 as sentencing
Broken strip part, the output contact of node output unit 23 close when intake be 1, the output contact of node output unit 23 separate when open into
Measure position 0.Second OR gate logic unit 34 1 has two Rule of judgment, can pass through the internal control word to reclosing protector
Parameter setting is carried out to select logic to meet condition.
Logic control module in reclosing protector 30 also includes the first comparing unit and the second comparing unit, first
The output signal of comparing unit is used as the first input signal with gate logic unit 32, the output signal conduct of the second comparing unit
The input signal of second OR gate logic unit 34.First comparing unit is used to judge the maximum phase current value Imax in three-phase current
Whether given definite value Iz is less than.Second comparing unit is used to judge whether the magnitude of voltage Ux of circuit PT measurements to determine less than given
Value Uxz.
Such as 10kV switch cubicles are not in the case of wiring PT, when scene does not have circuit PT, only charged display device,
The intake of charged display device 20 is accessed into reclosing protector 30, the internal control word of reclosing protector 30 is whole
It is set to 0.If jump occur in failure protection act or switch, the condition of the first OR gate logic unit 31 meets output high level,
This high level signal enters first and gate logic unit 32；If the maximum phase current value Imax now in faulty line three-phase current
Less than given definite value Iz, and reclosing protector charging complete, then first meet and export with the condition of gate logic unit 32
High level is to second and gate logic unit 33；If now charged display device intake is 1, the second OR gate logic unit 34 is defeated
Go out for high level, then second meet output high level, the second height exported with gate logic unit 33 with the condition of gate logic unit 33
Then level signal drives reclosing exit relay 36 to act, makes again by adjusting the reclosing delay that unit 35 is adjusted
Reclosing protector outlet is acted, and recovers the power supply to faulty line.
In the case of wiring PT, the intake of charged display device 20 does not access reclosing protector 30, will
The internal control word of reclosing protector 30 is adjusted as 1.If jump occur in failure protection act or switch, reclosing is protected
The condition of the first OR gate logic unit 31 in protection unit 30 meets output high level, and this high level signal enters first and gate logic
Unit 32；If the maximum phase current value Imax now in faulty line three-phase current is less than given definite value Iz, and reclosing
Protection device charging complete, then first export high level to second and gate logic unit 33 with the condition of gate logic unit 32 satisfaction；
If now reclosing protector is less than given definite value Uxz, the second OR gate logic by the circuit PT magnitude of voltage Ux measured
Unit 34 is output as high level, then second with the condition of gate logic unit 33 meet output high level, second with gate logic unit 33
Then the high level signal of output drives reclosing exit relay 36 again by adjusting the reclosing delay that unit 35 is adjusted
Action, acts reclosing protector outlet, recovers the power supply to faulty line.
In the case of wiring PT, the intake of charged display device 20 is accessed into reclosing protector 30, will
The internal control word of reclosing protector 30 is adjusted as 2.If jump occur in failure protection act or switch, reclosing is protected
The condition of the first OR gate logic unit 31 in protection unit 30 meets output high level, and this high level signal enters first and gate logic
Unit 32；If the maximum phase current value Imax now in faulty line three-phase current is less than given definite value Iz, and reclosing
Protection device charging complete, then first export high level to second and gate logic unit 33 with the condition of gate logic unit 32 satisfaction；
If now reclosing protector is less than given definite value Uxz or charged display device by the circuit PT magnitude of voltage Ux measured
Intake is 1, then the second OR gate logic unit 34 is output as high level, then second meets output height with the condition of gate logic unit 33
Level, the second high level signal exported with gate logic unit 33 is delayed by adjusting the reclosing that unit 35 is adjusted, then
Drive reclosing exit relay 36 to act again, act reclosing protector outlet, recover the power supply to faulty line.
The production for the model RSC-9611C that reclosing protector can be produced using Nanrui Jibao Electric Co., Ltd
Product.The product for the model CVD3-IL that charged display device can be produced using Xiamen Bai Gang Electric Applicance Co., Ltd.
It is described above to be not limited to the utility model only to preferred embodiment of the present utility model, for this
For the technical staff in field, the utility model can have various modifications and variations.
Claims (2)
1. a kind of device for realizing reclosing checkout voltage, it is characterised in that including charged display device and reclosing protector,
The reclosing protector is provided with and adjusts unit, reclosing exit relay and Logic control module, the logic control mould
Block includes the first OR gate logic unit, first and gate logic unit, second and gate logic unit and the second OR gate logic unit；Institute
Charged display device is stated provided with node output unit, the intake of the node output unit is used as the second OR gate logic unit
Input signal, the output end of the second OR gate logic unit is connected with described second with the input of gate logic unit, institute
The output end for stating the first OR gate logic unit is connected with described first with gate logic unit input, described first with gate logic list
The output end of member is connected with second with the input of gate logic unit, described second pass through with the output end of gate logic unit it is described
Unit is adjusted to be connected with reclosing exit relay.
2. the device according to claim 1 for realizing reclosing checkout voltage, it is characterised in that the Logic control module is also
Including the first comparing unit and the second comparing unit, the output signal of first comparing unit is used as described first and gate logic
The input signal of unit, the output signal of second comparing unit as the second OR gate logic unit input signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720142069.7U CN206422507U (en) | 2017-02-17 | 2017-02-17 | Realize the device of reclosing checkout voltage |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720142069.7U CN206422507U (en) | 2017-02-17 | 2017-02-17 | Realize the device of reclosing checkout voltage |
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| CN206422507U true CN206422507U (en) | 2017-08-18 |
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| CN201720142069.7U Active CN206422507U (en) | 2017-02-17 | 2017-02-17 | Realize the device of reclosing checkout voltage |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106684812A (en) * | 2017-02-17 | 2017-05-17 | 国网山东省电力公司威海供电公司 | Device and method for achieving reclosing non-voltage check |
| CN113203888A (en) * | 2021-04-30 | 2021-08-03 | 广东电网有限责任公司韶关供电局 | Non-voltage detection method, device, equipment and storage medium for grounding disconnecting link |
-
2017
- 2017-02-17 CN CN201720142069.7U patent/CN206422507U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106684812A (en) * | 2017-02-17 | 2017-05-17 | 国网山东省电力公司威海供电公司 | Device and method for achieving reclosing non-voltage check |
| CN113203888A (en) * | 2021-04-30 | 2021-08-03 | 广东电网有限责任公司韶关供电局 | Non-voltage detection method, device, equipment and storage medium for grounding disconnecting link |
| CN113203888B (en) * | 2021-04-30 | 2022-04-15 | 广东电网有限责任公司韶关供电局 | Non-voltage detection method, device, equipment and storage medium for grounding disconnecting link |
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