CN208352991U - A kind of zero blind area anti-islanding protection device of low pressure distributed generation resource - Google Patents
A kind of zero blind area anti-islanding protection device of low pressure distributed generation resource Download PDFInfo
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- CN208352991U CN208352991U CN201821081867.4U CN201821081867U CN208352991U CN 208352991 U CN208352991 U CN 208352991U CN 201821081867 U CN201821081867 U CN 201821081867U CN 208352991 U CN208352991 U CN 208352991U
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- generation resource
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- 230000001681 protective effect Effects 0.000 claims abstract description 35
- 230000005611 electricity Effects 0.000 claims abstract description 4
- 239000013308 plastic optical fiber Substances 0.000 claims description 18
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 claims description 8
- 238000006073 displacement reaction Methods 0.000 claims description 7
- 238000004804 winding Methods 0.000 claims description 7
- 230000003287 optical effect Effects 0.000 claims description 5
- 238000009434 installation Methods 0.000 description 8
- 238000012423 maintenance Methods 0.000 description 4
- 230000001012 protector Effects 0.000 description 3
- 238000007789 sealing Methods 0.000 description 2
- 238000001514 detection method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
Abstract
The utility model relates to a kind of zero blind area anti-islanding protection devices of low pressure distributed generation resource; including cabinet, reverse-power protection device, protective module and o controller; one end of reverse-power protection device is connected with the first current transformer; the other end of reverse-power protection device is connected with o controller; one end of protective module is connected with the second current transformer; the other end of the protective module is connected with o controller, and the o controller is connected with the grid-connected switch of low pressure distributed generation resource；The advantages of the utility model: the electric current of step down side is detected by the first current transformer connected on reverse-power protection device; when detecting that electric current is reversed; it can be given immediately by o controller under the grid-connected switch of low pressure distributed generation resource and force the order of separating brake; so that it is guaranteed that 100% does not form arc island; it ensure that distributed generation resource will not return to high-voltage electricity to 10KV route by transformer; it ensure that repairing or the safety of service personnel, avoid the dead group of group and hurt event.
Description
Technical field
The utility model relates to a kind of zero blind area anti-islanding protection devices of low pressure distributed generation resource.
Background technique
Anti- isolated island protective device is an important protective device of switchgear house distributed generation resource, and the protection of anti-isolated island should have
Active and passive type, active includes that frequency is higher, active and reactive power changes, passive type include voltage-phase bounce and
Frequency variation, the outlet of isolated island trip protection generally connect on grid-connected breaker, and grid-connected breaker is cut off when there is island phenomenon,
Therefore anti-isolated island protective device must have the voltage and frequency of accurate detection grid entry point, then when fluctuating occur in voltage and frequency and
Tripping outlet movement, disconnects grid-connected switch when greater than customization, and is currently installed in the anti-isolated island protection of distributed generation resource separation
Device cannot all accomplish 100% island Fan Hu operation, and the facilities plan interruption maintenance surveyed to power grid causes security risk.
Utility model content
The zero blind area anti-islanding that the technical problems to be solved in the utility model is just to provide a kind of low pressure distributed generation resource is protected
Protection unit, solving existing anti-isolated island protective device causes power grid to there is technical issues that when surveying interruption maintenance.
In order to solve the above-mentioned technical problem, the utility model is achieved through the following technical solutions: a kind of low pressure distribution
Zero blind area anti-islanding protection device of formula power supply, including cabinet, reverse-power protection device, protective module and o controller, it is described
Reverse-power protection device, protective module and o controller are arranged in cabinet, and one end of the reverse-power protection device is connected with
First current transformer, and the first current transformer is mounted on the low-pressure side of the transformer of low pressure distributed generation resource, the inverse function
The other end of rate protector is connected with o controller, and one end of the protective module is connected with the second current transformer, and
Two current transformers are mounted on the side of the input terminal of the grid-connected switch of low pressure distributed generation resource, the other end of the protective module
It is connected with o controller, the o controller is connected with the grid-connected switch of low pressure distributed generation resource.
Preferably, it is equipped with horizontal cross plate in the cabinet, cabinet is separated into the first placed cavity and the by the horizontal cross plate
Two placed cavities, the protective module and o controller are installed on horizontal cross plate and are located in the second placed cavity, described inverse
Power protector is mounted on horizontal cross plate and is located in the first placed cavity, is equipped in first placed cavity and reverse-power protection
The power supply of device electrical connection.
Preferably, the reverse-power protection device and the first current transformer, protective module and the second current transformer, output
Controller is connected by plastic optical fiber with grid-connected switch, and the plastic optical fiber is equipped with single-way switch amount infrared emission light end
Machine.
Preferably, the cabinet is equipped with the winding displacement hole penetrated for plastic optical fiber.
Preferably, case lid is additionally provided on the cabinet, the case lid is equipped with the rake tilted down.
Preferably, pedestal is additionally provided on the cabinet, the cabinet is installed on the ground with pedestal.
In conclusion the advantages of the utility model: 1. by the first current transformer for being connected on reverse-power protection device come
The electric current for detecting step down side can give immediately low pressure distributed electrical by o controller when detecting that electric current is reversed
The order of separating brake is forced to ensure that distributed generation resource will not pass through so that it is guaranteed that 100% does not form arc island under the grid-connected switch in source
Transformer returns to high-voltage electricity to 10KV route, ensure that repairing or the safety of service personnel, avoids the dead group of group and hurt event, leads to
The second current transformer connected in overprotection module detects the electric current into grid-connected switch, when electric current occur low frequency, overfrequency,
When low pressure or over-voltage, it can be given immediately by o controller under the grid-connected switch of low pressure distributed generation resource and force the order of separating brake,
Ensure that the normal operation of route；
2. the setting of horizontal cross plate, reverse-power protection device, protective module and the unified installation of o controller can ensure that, it is excellent
The inner space for having changed cabinet is conducive to the placement of power supply, has saved installation cost, adapts to different installation environments,
The setting of power supply can ensure that the continuous sex work of reverse-power protection device, it is ensured that the steady operation of the island Fan Hu protective device；
3. the speed that plastic optical fiber and single-way switch amount infrared emission optical transmitter and receiver can improve the protection of the island Fan Hu；
4. the setting in winding displacement hole can ensure that the installation of plastic optical fiber, optimizes the winding displacement of plastic optical fiber, reduce plastic optical fiber
Length；
5. the setting of case lid is able to achieve the sealing of cabinet, be conducive to reverse-power protection device, protective module and o controller
Fast Installation and maintenance, the setting of rake is avoided that rainwater enters in cabinet, improves the operation of the island Fan Hu protective device
Security performance；
6. the setting of pedestal can ensure that cabinet can be installed smoothly on the ground, and can be mounted on low pressure distributed generation resource
User equipment near, can be further improved the island Fan Hu protective device operation security performance.
Detailed description of the invention
Fig. 1 is a kind of structural schematic diagram of zero blind area anti-islanding protection device of low pressure distributed generation resource of the utility model；
Fig. 2 is that zero blind area anti-islanding protection device of the utility model is mounted on the structural representation on low pressure distributed generation resource
Figure.
Appended drawing reference:
1 cabinet, 11 horizontal cross plates, 12 first placed cavities, 13 second placed cavities, 14 power supplies, 15 winding displacement holes, 16 casees
Lid, 17 rakes, 18 pedestals, 2 reverse-power protection devices, 21 first current transformers, 3 protective modules, 31 second current transformers,
4 o controllers, 5 plastic optical fibers, 6 single-way switch amount infrared emission optical transmitter and receivers, 8 grid-connected switches.
Specific embodiment
As shown in Figure 1 and Figure 2, zero blind area anti-islanding protection device of a kind of low pressure distributed generation resource, including cabinet 1, inverse function
Rate protector 2, protective module 3 and o controller 4, protective module 3 have underfrequency protection, over frequency protection, overvoltage protection and low
Pressure protection can give immediately low pressure distributed generation resource by o controller when low frequency, overfrequency, low pressure or over-voltage occurs in electric current
Grid-connected switch under force the order of separating brake, ensure that the normal operation of route, the reverse-power protection device 2, protection mould
Block 3 and o controller 4 are arranged in cabinet 1, and one end of the reverse-power protection device 2 is connected with the first current transformer
21, and the first current transformer 21 is mounted on the low-pressure side of the transformer of low pressure distributed generation resource, the reverse-power protection device 2
The other end is connected with o controller 4, and one end of the protective module 3 is connected with the second current transformer 31, and the second electric current
Mutual inductor 31 is mounted on the side of the input terminal of the grid-connected switch of low pressure distributed generation resource, the other end of the protective module 3 with
O controller 4 is connected, and the o controller 4 is connected with the grid-connected switch 8 of low pressure distributed generation resource, passes through reverse-power protection
The first current transformer connected on device can pass through defeated to detect the electric current of step down side when detecting that electric current is reversed
Controller gives under the grid-connected switch of low pressure distributed generation resource the order for forcing separating brake immediately out, so that it is guaranteed that 100% does not form arc
Island ensure that distributed generation resource will not return to high-voltage electricity to 10KV route by transformer, ensure that repairing or service personnel
Safety, avoids the dead group of group and hurts event.
It is equipped with horizontal cross plate 11 in the cabinet 1, cabinet 1 is separated into the first placed cavity 12 and the by the horizontal cross plate 11
Two placed cavities 13, the protective module 3 and o controller 4 are installed on horizontal cross plate 11 and are located at the second placed cavity 13
Interior, the reverse-power protection device 2 is mounted on horizontal cross plate and is located in the first placed cavity, is equipped in first placed cavity 12
The power supply 14 being electrically connected with reverse-power protection device 2, horizontal cross plate 11 can ensure that reverse-power protection device 2, protective module 3 and defeated
The unified installation of controller 4 out optimizes the inner space of cabinet 1, is conducive to the placement of power supply 14, has saved and be mounted to
This, adapts to different installation environments, the setting of power supply 14 can ensure that the continuous sex work of reverse-power protection device 2, it is ensured that
The steady operation of the island Fan Hu protective device, in addition, reverse-power protection device 2 is in ± 10% model that grid voltage change is voltage rating
In enclosing, frequency variation is that device can work normally in ± 5% range of rated frequency, and power supply uses 400V 50HZ/60HZ
AC two-phase, specified input current be 5A AC two-phase, when parallel running unit inverse probability value reach specified 3~15%, delay 3
At~10 seconds, reverse-power relay movement.
The reverse-power protection device 2 and the first current transformer 21, protective module 3 and the second current transformer 31, output
Controller 4 is connected by plastic optical fiber 5 with grid-connected switch, and the plastic optical fiber 5 is equipped with single-way switch amount infrared emission
Optical transmitter and receiver 6, plastic optical fiber 5 and single-way switch amount infrared emission optical transmitter and receiver 6 can improve the speed of the island Fan Hu protection, the cabinet 1
It is equipped with the winding displacement hole 15 penetrated for plastic optical fiber 5, can ensure that the installation of plastic optical fiber 5, optimizes the winding displacement of plastic optical fiber 5, subtracts
The length of plastic optical fiber 5 is lacked.
In addition, being additionally provided with case lid 16 on the cabinet 1, the case lid 16 is equipped with the rake 17 tilted down, case lid
16 setting is able to achieve the sealing of cabinet 1, is conducive to the quick peace of reverse-power protection device 2, protective module 3 and o controller 4
Dress and maintenance, the setting of rake 17 are avoided that rainwater enters in cabinet 1, improve the safety of the island Fan Hu protective device operation
Performance is additionally provided with pedestal 18 on the cabinet 1, and the cabinet 1 is installed on the ground with pedestal 18, and pedestal 18 can ensure that cabinet 1
It can smoothly install on the ground, and can be mounted near the user equipment of low pressure distributed generation resource, can be further improved anti-
The security performance of arc island protective device operation.
In addition to above preferred embodiment, for the utility model there are also other embodiments, those skilled in the art can root
It is made various changes and modifications according to the utility model, without departing from the spirit of the utility model, should belong to the utility model
Range defined in appended claims.
Claims (6)
1. a kind of zero blind area anti-islanding protection device of low pressure distributed generation resource, it is characterised in that: including cabinet, reverse-power protection
Device, protective module and o controller, the reverse-power protection device, protective module and o controller are arranged in cabinet,
One end of the reverse-power protection device is connected with the first current transformer, and the first current transformer is mounted on low pressure distributed electrical
The other end of the low-pressure side of the transformer in source, the reverse-power protection device is connected with o controller, and the one of the protective module
End is connected with the second current transformer, and the second current transformer is mounted on the input terminal of the grid-connected switch of low pressure distributed generation resource
Side, the other end of the protective module is connected with o controller, the o controller and low pressure distributed generation resource
Grid-connected switch is connected.
2. a kind of zero blind area anti-islanding protection device of low pressure distributed generation resource according to claim 1, it is characterised in that:
Horizontal cross plate is equipped in the cabinet, cabinet is separated into the first placed cavity and the second placed cavity, the guarantor by the horizontal cross plate
Shield module and o controller are installed on horizontal cross plate and are located in the second placed cavity, and the reverse-power protection device is mounted on
On horizontal cross plate and it is located in the first placed cavity, the power supply electricity being electrically connected with reverse-power protection device is equipped in first placed cavity
Source.
3. a kind of zero blind area anti-islanding protection device of low pressure distributed generation resource according to claim 1, it is characterised in that:
The reverse-power protection device is opened with the second current transformer, o controller with grid-connected with the first current transformer, protective module
Guan Jun is connected by plastic optical fiber, and the plastic optical fiber is equipped with single-way switch amount infrared emission optical transmitter and receiver.
4. a kind of zero blind area anti-islanding protection device of low pressure distributed generation resource according to claim 3, it is characterised in that:
The cabinet is equipped with the winding displacement hole penetrated for plastic optical fiber.
5. a kind of zero blind area anti-islanding protection device of low pressure distributed generation resource according to claim 1, it is characterised in that:
Case lid is additionally provided on the cabinet, the case lid is equipped with the rake tilted down.
6. a kind of zero blind area anti-islanding protection device of low pressure distributed generation resource according to claim 1, it is characterised in that:
Pedestal is additionally provided on the cabinet, the cabinet is installed on the ground with pedestal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821081867.4U CN208352991U (en) | 2018-07-09 | 2018-07-09 | A kind of zero blind area anti-islanding protection device of low pressure distributed generation resource |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821081867.4U CN208352991U (en) | 2018-07-09 | 2018-07-09 | A kind of zero blind area anti-islanding protection device of low pressure distributed generation resource |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208352991U true CN208352991U (en) | 2019-01-08 |
Family
ID=64905202
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821081867.4U Active CN208352991U (en) | 2018-07-09 | 2018-07-09 | A kind of zero blind area anti-islanding protection device of low pressure distributed generation resource |
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| Country | Link |
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| CN (1) | CN208352991U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020010850A1 (en) * | 2018-07-09 | 2020-01-16 | 国网浙江省电力有限公司台州供电公司 | Anti-islanding protection system |
-
2018
- 2018-07-09 CN CN201821081867.4U patent/CN208352991U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020010850A1 (en) * | 2018-07-09 | 2020-01-16 | 国网浙江省电力有限公司台州供电公司 | Anti-islanding protection system |
| US11095126B2 (en) | 2018-07-09 | 2021-08-17 | State Grid Zhejiang Electric Power Co., Ltd. Taizhou power supply company | Anti-islanding protection system |
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