CN207719823U - Photovoltaic plant has pressing brake gear - Google Patents
Photovoltaic plant has pressing brake gear Download PDFInfo
- Publication number
- CN207719823U CN207719823U CN201820044524.4U CN201820044524U CN207719823U CN 207719823 U CN207719823 U CN 207719823U CN 201820044524 U CN201820044524 U CN 201820044524U CN 207719823 U CN207719823 U CN 207719823U
- Authority
- CN
- China
- Prior art keywords
- circuit
- voltage
- detection circuit
- brake gear
- door
- 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
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
- Y02E10/56—Power conversion systems, e.g. maximum power point trackers
Abstract
Have a pressing brake gear the utility model discloses a kind of photovoltaic plant, including main power grid voltage detection circuit, service entrance switch jump position detection circuit, allow combined floodgate circuit, scheduling allow to generate electricity by way of merging two or more grid systems command reception circuit, first with door, the first time-delay relay and have pressing lock unit；Photovoltaic plant has pressing brake gear installment work between distributed generation system and power distribution network, photovoltaic plant has pressing brake gear determining service entrance switch in jump position, after main network voltage restores normal and distributed power generation side without pressure, output has pressure switching signal automatically after closing a floodgate and being delayed, while the breaker being connected execution being made to have pressure feed motion automatically.Therefore, when distributed generation system trouble or failure, there is pressure feed motion automatically by controlling the breaker being connected execution, protect power grid not to be hit, to ensure the safe and stable operation of power grid.
Description
Technical field
The utility model is related to electrical protection apparatus technical fields, more specifically, being related to a kind of photovoltaic plant has pressing
Brake gear.
Background technology
Distributed photovoltaic power generation refers in particular to use photovoltaic module, and solar energy is converted directly into the distributed power generation system of electric energy
System.Distributed photovoltaic power generation is a kind of novel, tool power generation and the energy with broad prospects for development comprehensive utilization mode, is advocated
It generates electricity nearby, it is grid-connected nearby, it converts nearby, the principle used nearby can not only effectively improve same size photovoltaic plant
Generated energy, while can also effectively solve the problems, such as loss of the electric power in boosting and long-distance transport.
With the popularization of distributed generation system, the increase of aggregates power, the safe and stable operation of distributed generation system
The influence brought to the safe and stable operation of power grid is increasing.Currently, although Guo Wang companies have put into effect《Distributed generation resource
Access power distribution network associated specifications》, but not yet there is the distributed photovoltaic relevant device for meeting this specification in existing market, greatly
More distributed photovoltaic formulas are directly accessed power grid by breaker and generate electricity by way of merging two or more grid systems.Although reducing distributed photovoltaic power generation in this way
Cost, but be not equipped with any protection equipment, when distributed generation system trouble or failure, be easy to bring to power grid very big
Impact.
Utility model content
In view of this, the utility model, which discloses a kind of photovoltaic plant, pressing brake gear, to realize in distributed power generation system
When system trouble or failure, the impact to power grid is reduced.
A kind of photovoltaic plant has pressing brake gear, described to have pressing brake gear to be mounted on connection distributed photovoltaic power generation system
On the power line of power distribution network, it is described have pressing brake gear include：
For detecting whether main network voltage restores normal main power grid voltage detection circuit；
For whether detecting service entrance switch in the service entrance switch jump position detection circuit for jumping position；
Allow combined floodgate circuit；
Scheduling allows the command reception circuit that generates electricity by way of merging two or more grid systems；
Input terminal jumps position detection circuit with the output end of the main power grid voltage detection circuit, the service entrance switch respectively
Output end, the output end for allowing combined floodgate circuit and the output end company for dispatching the command reception circuit that allows to generate electricity by way of merging two or more grid systems
First and the door connect；
The first time-delay relay that input terminal is connect with described first with the output end of door；
What input terminal was connect with the output end of first time-delay relay has pressing lock unit, described to have pressing lock unit
Output end connection be mounted on the breaker on the power line, to jump position, main power grid when determining that the service entrance switch is in
After voltage restores normal and distributed power generation side without pressure, can be exported after closing a floodgate and being delayed has pressure switching signal automatically, while making institute
State breaker execution has pressure feed motion automatically.
Preferably, the main power grid voltage detection circuit includes：Voltage comparator circuit, the second time-delay relay, busbar electricity
Press mutual inductor detection circuit and primary voltage mutual inductor detection circuit；
The voltage comparator circuit is connect by second time-delay relay with described first with the input terminal of door；
The output end of the bus-bar potential transformer detection circuit is connect with described first with the input terminal of door；
The output end of the primary voltage mutual inductor detection circuit is connect with described first with the input terminal of door.
Preferably, the voltage comparator circuit includes：
For by circuit extract voltage respectively be preset with pressure the upper limit and be preset with pressure limit be compared, determine the line
Road extract voltage whether it is described be preset with pressure the upper limit and it is described be preset with pressure limit between first voltage comparing unit；
For distributed power generation side line voltage max and the pressure limit that is preset with to be compared, the distribution is determined
Whether formula Generation Side line voltage maximum value is less than the second voltage comparing unit for being preset with pressure limit；
Second and the door that input terminal is connect with the first voltage comparing unit, second voltage comparing unit respectively；
The second time-delay relay that input terminal is connect with described second with the output end of door, second time-delay relay
Output end connects the input terminal of described first and door.
Preferably, the bus-bar potential transformer detection circuit includes：
Bus-bar potential transformer abnormal detection circuit, and respectively with the bus-bar potential transformer abnormal detection circuit and
Described first the first not circuit being connect with door.
Preferably, the primary voltage mutual inductor detection circuit includes：
Primary voltage mutual inductor abnormal detection circuit, and respectively with the primary voltage mutual inductor abnormal detection circuit and
Described first the second not circuit being connect with door.
Preferably, described to allow the combined floodgate circuit to include：It is automatic to have the pressing soft pressing plate of lock.
It can be seen from the above technical scheme that photovoltaic plant disclosed by the utility model has pressing brake gear installment work
Between distributed generation system and power distribution network, photovoltaic plant has pressing brake gear determining service entrance switch in jump position, main electricity
After net voltage restores normal and distributed power generation side without pressure, output has pressure switching signal automatically after closing a floodgate and being delayed, while making phase
The breaker execution of connection has pressure feed motion automatically.Therefore, when distributed generation system trouble or failure, by controlling phase
The breaker execution of connection has pressure feed motion automatically, protects power grid not to be hit, to ensure the safe and stable operation of power grid.
Description of the drawings
In order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment
Or attached drawing needed to be used in the description of the prior art is briefly described, it should be apparent that, the accompanying drawings in the following description is only
It is the embodiments of the present invention, for those of ordinary skill in the art, without creative efforts, also
Other attached drawings can be obtained according to disclosed attached drawing.
Fig. 1 has the structural schematic diagram of pressing brake gear for a kind of photovoltaic plant disclosed in the utility model embodiment；
Fig. 2 is a kind of structural schematic diagram of main power grid voltage detection circuit disclosed in the utility model embodiment；
Fig. 3 has the automatic of pressing brake gear to have pressing lock principle for a kind of photovoltaic plant disclosed in the utility model embodiment
Figure.
Specific implementation mode
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model
Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole
Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without making creative work
The every other embodiment obtained, shall fall within the protection scope of the present invention.
The utility model embodiment, which discloses a kind of photovoltaic plant, pressing brake gear, to realize in distributed generation system
When trouble or failure, the impact to power grid is reduced.
Referring to Fig. 1, a kind of photovoltaic plant disclosed in the utility model embodiment has the structural schematic diagram of pressing brake gear, light
Overhead utility has pressing brake gear 1 to be mounted on the power line 2 of connection distributed photovoltaic power generation system and power distribution network, and photovoltaic plant has
Pressing brake gear includes：Main power grid voltage detection circuit 11, service entrance switch jump position detection circuit 12, allow combined floodgate circuit 13, adjust
Degree allows to generate electricity by way of merging two or more grid systems and command reception circuit 14, first and door 15, the first time-delay relay 16 and has pressing lock unit 17；
Wherein：
Main power grid voltage detection circuit 11 is for detecting whether main network voltage restores normal.
Specifically, determining that main network voltage restores normal Rule of judgment and includes but not limited to：Circuit extracts voltage and is located at
Between being preset with the pressure upper limit and having pressure to limit, distributed power generation side line voltage max, which is less than, is preset with pressure limit, busbar voltage
Mutual inductor is normal and primary voltage mutual inductor is normal.
Wherein, it is preset with the pressure upper limit and is preset with the concrete numerical value depend on the actual needs of pressure limit, the utility model
It does not limit herein.
Service entrance switch jumps position detection circuit 12 for whether detecting service entrance switch in jump position.
It should be noted that in the present embodiment, service entrance switch is between busbar and power grid, when service entrance switch jumps position,
Service entrance switch trip position signal circuit is connected, and it is positively charged to jump position.
First jumps position detection with the output end of main power grid voltage detection circuit 11, service entrance switch respectively with the input terminal of door 15
The output end of circuit 12 allows the output end of combined floodgate circuit 13 and scheduling to allow to generate electricity by way of merging two or more grid systems the output of command reception circuit 14
End connection.
It is the base for executing AND operation with door specifically, being also known as " with circuit " with door, logic " product ", logical "and" circuit
This logic gates has multiple input end, an output end.When all inputs are simultaneously high level (logic 1), with door
Output just be high level, otherwise output be low level (logical zero).
In the present embodiment, when main power grid voltage detection circuit 11 detects that main network voltage restores normal, service entrance switch is jumped
Position detection circuit 12 detects that service entrance switch is in and jumps position, and allowing combined floodgate circuit 13 to be in allows "on" position, and scheduling is permitted
Command reception circuit 14 of being permitted to generate electricity by way of merging two or more grid systems receive scheduling allow to generate electricity by way of merging two or more grid systems instruction when, first exports high level with door 15, no
Then, first low level is exported with door 15.
The input terminal of first time-delay relay 16 is connect with first with the output end of door 15.
Specifically, the first time-delay relay 16 is for there is pressing lock delay, wherein delay time concrete foundation is actually needed
Depending on, such as 20s, the utility model does not limit herein.
There is the input terminal of pressing lock unit 17 to be connect with the output end of the first time-delay relay 16, there is pressing lock unit 17
Output end connection is mounted on the breaker on power line 2, with when determining the service entrance switch in position is jumped, main network voltage is extensive
After multiple normal and distributed power generation side is without pressure, output has pressure switching signal automatically after closing a floodgate and being delayed, while it is disconnected to make to be connected
Road device execution has pressure feed motion automatically.
Specifically, after first exports high level with door 15, photovoltaic plant has pressing brake gear that will start has pressure automatically
Closing function, photovoltaic plant have pressing brake gear after closing a floodgate and being delayed, and can export has pressure switching signal automatically, while making breaker
Execution has pressure feed motion automatically, wherein output it is automatic have press switching signal can be shown in display and/or teletransmission extremely
Electric network monitoring device.
In summary, photovoltaic plant disclosed by the utility model has pressing brake gear installment work in distributed generation system
Between power distribution network, photovoltaic plant has pressing brake gear to jump position determining that service entrance switch is in, main network voltage restore it is normal and
After distributed power generation side is without pressure, output has pressure switching signal automatically after closing a floodgate and being delayed, while the breaker being connected being made to execute
Automatically there is pressure feed motion.Therefore, it when distributed generation system trouble or failure, is executed by controlling the breaker being connected
Automatically there is pressure feed motion, power grid is protected not to be hit, to ensure the safe and stable operation of power grid.
It should be noted that in above-described embodiment, after all protection acts, there is that pressing lock is still actionable primary automatically,
If after action is primary in preset time period (such as 20s), protection acts again, then photovoltaic plant has pressing brake gear locking to have automatically
Lock is pressed, is closed, after distant conjunction order until reception is in one's hands, photovoltaic plant has pressing brake gear, and opening has pressure closing power automatically again
Energy；If (such as 20s) protection has pressing lock dress without action (closing position), photovoltaic plant in preset time period after action is primary
Set opening has pressure closing function automatically.
If maintenance needs locking photovoltaic plant to have the automatic switching-in function of pressing brake gear, photovoltaic plant can be had to pressing lock
Mode adjustment in device on breaker of plastic casing electricity behaviour is manual, when photovoltaic plant has breaker of plastic casing electricity behaviour in pressing brake gear
On pattern be adjusted to manually after, photovoltaic plant has pressing brake gear to will be unable to send out combined floodgate order；When photovoltaic plant has pressure
After the pattern that breaker of plastic casing electricity is grasped in closing device by being adjusted to automatic again manually, if combined floodgate condition meets, photovoltaic electric
Station has pressing brake gear that can carry out automatic closing again.
Wherein, in above-described embodiment, allow combined floodgate circuit 13 in practical applications, can specifically include：Automatically there is pressing
The soft pressing plate of lock.
In order to further optimize the above embodiments, referring to Fig. 2, a kind of main network voltage disclosed in one embodiment of the utility model
The structural schematic diagram of detection circuit, main power grid voltage detection circuit 11 specifically include：Voltage comparator circuit 111, second delay after
Electric appliance 112, bus-bar potential transformer detection circuit 113 and primary voltage mutual inductor detection circuit 114；
Wherein：
Voltage comparator circuit 111 is connect by the second time-delay relay 112 with first with the input terminal of door 15.
Specifically, in the present embodiment, voltage comparator circuit 111 includes：First voltage comparing unit 1111, second voltage ratio
Compared with unit 1112, second and door 1113 and the second time-delay relay 1114；
First voltage comparing unit 1111 be used for by circuit extract voltage respectively be preset with the pressure upper limit and be preset with pressure
Limit is compared, determine the circuit extract voltage whether it is described be preset with the pressure upper limit and it is described be preset with pressure limit between；
Wherein, it is preset with the pressure upper limit and is preset with the concrete numerical value depend on the actual needs of pressure limit, the utility model is not done herein
It limits.
Second voltage comparing unit 1112 is used to distributed power generation side line voltage max being preset with pressure limit with described
It is compared, determines whether the distributed power generation side line voltage max is preset with pressure limit less than described in；
Second with the input terminal of door 1113 respectively with first voltage comparing unit 1111 and second voltage comparing unit 1112
Connection, second is used to determine that circuit extracts whether voltage is being preset with the pressure upper limit in first voltage comparing unit 1111 with door 1113
And be preset between pressure limit, and second voltage comparing unit 1112 determines distributed power generation side line voltage max less than default
There is pressure to prescribe a time limit, export high level, otherwise, exports low level.
The input terminal of second time-delay relay 1114 is connect with second with the output end of door 1113, the second time-delay relay
The input terminal of 1114 output end connection first and door 15；The delay time concrete foundation of second time-delay relay 1114 is practical to be needed
Depending on wanting, such as 4s, the utility model does not limit herein.
The output end of bus-bar potential transformer detection circuit 113 is connect with first with the input terminal of door 15.
Specifically, whether bus-bar potential transformer detection circuit 113 is normal for detecting bus-bar potential transformer, this implementation
In example, bus-bar potential transformer detection circuit 113 includes：Bus-bar potential transformer abnormal detection circuit 1131, and respectively with
The first not circuit 1132 that bus-bar potential transformer abnormal detection circuit 1131 and first is connect with door 15.
The output end of primary voltage mutual inductor detection circuit 114 is connect with first with the input terminal of door 15.
Specifically, whether primary voltage mutual inductor detection circuit 114 is normal for detecting primary voltage mutual inductor, this implementation
In example, primary voltage mutual inductor detection circuit 114 includes：Primary voltage mutual inductor abnormal detection circuit 1141, and respectively with
The second not circuit 1142 that the primary voltage mutual inductor abnormal detection circuit 1141 and described first is connect with door 15.
Photovoltaic plant disclosed by the utility model has pressing brake gear installment work in distributed generation system and power distribution network
Between, photovoltaic plant has pressing brake gear to jump position determining that service entrance switch is in, and main network voltage restores normal and distributed hair
After electric side is without pressure, output has pressure switching signal automatically after closing a floodgate and being delayed, while the breaker being connected execution being made to have pressure automatically
Feed motion.Therefore, when distributed generation system trouble or failure, there is pressure automatically by controlling the breaker being connected execution
Feed motion protects power grid not to be hit, to ensure the safe and stable operation of power grid.
For convenience of understanding, as shown in figure 3, the invention also discloses photovoltaic plants to have the automatic of pressing brake gear to have pressure
Combined floodgate schematic diagram, in Fig. 3,112 delay time of the second time-delay relay is 4s, and Tyy is to have pressing lock delay, corresponding above-mentioned implementation
The first time-delay relay 16 in example has the output after delay of closing a floodgate of pressing lock unit 17 to have pressure switching signal automatically, makes simultaneously
The breaker execution being connected has pressure feed motion automatically, also, can also export central signal and make protection act.
Finally, it is to be noted that, herein, relational terms such as first and second and the like be used merely to by
One entity or operation are distinguished with another entity or operation, without necessarily requiring or implying these entities or operation
Between there are any actual relationship or orders.Moreover, the terms "include", "comprise" or its any other variant meaning
Covering non-exclusive inclusion, so that the process, method, article or equipment including a series of elements includes not only that
A little elements, but also include other elements that are not explicitly listed, or further include for this process, method, article or
The intrinsic element of equipment.In the absence of more restrictions, the element limited by sentence "including a ...", is not arranged
Except there is also other identical elements in the process, method, article or apparatus that includes the element.
Each embodiment is described by the way of progressive in this specification, the highlights of each of the examples are with other
The difference of embodiment, just to refer each other for identical similar portion between each embodiment.
The foregoing description of the disclosed embodiments enables professional and technical personnel in the field to realize or use this practicality new
Type.Various modifications to these embodiments will be apparent to those skilled in the art, and determine herein
The General Principle of justice can be realized in other embodiments without departing from the spirit or scope of the present utility model.Cause
This, the utility model is not intended to be limited to the embodiments shown herein, and is to fit to and principles disclosed herein
The widest range consistent with features of novelty.
Claims (6)
1. a kind of photovoltaic plant has a pressing brake gear, it is described have pressing brake gear be mounted on connection distributed photovoltaic power generation system and
On the power line of power distribution network, which is characterized in that it is described have pressing brake gear include：
For detecting whether main network voltage restores normal main power grid voltage detection circuit；
For whether detecting service entrance switch in the service entrance switch jump position detection circuit for jumping position；
Allow combined floodgate circuit；
Scheduling allows the command reception circuit that generates electricity by way of merging two or more grid systems；
Input terminal jumps the output of position detection circuit with the output end of the main power grid voltage detection circuit, the service entrance switch respectively
End, the output end for allowing combined floodgate circuit and the scheduling allow to generate electricity by way of merging two or more grid systems the output end connection of command reception circuit
First and door；
The first time-delay relay that input terminal is connect with described first with the output end of door；
What input terminal was connect with the output end of first time-delay relay has pressing lock unit, described to have the defeated of pressing lock unit
Outlet connection is mounted on the breaker on the power line, to jump position, main network voltage when the determining service entrance switch is in
After restoring normal and distributed power generation side without pressure, can be exported after closing a floodgate and being delayed has pressure switching signal automatically, while making described disconnected
Road device execution has pressure feed motion automatically.
2. photovoltaic plant according to claim 1 has pressing brake gear, which is characterized in that the main network voltage detection electricity
Road includes：Voltage comparator circuit, the second time-delay relay, bus-bar potential transformer detection circuit and the detection of primary voltage mutual inductor
Circuit；
The voltage comparator circuit is connect by second time-delay relay with described first with the input terminal of door；
The output end of the bus-bar potential transformer detection circuit is connect with described first with the input terminal of door；
The output end of the primary voltage mutual inductor detection circuit is connect with described first with the input terminal of door.
3. photovoltaic plant according to claim 2 has pressing brake gear, which is characterized in that the voltage comparator circuit packet
It includes：
It is compared respectively with being preset with the pressure upper limit and be preset with pressure limit for circuit to be extracted voltage, determines circuit pumping
Take voltage whether it is described be preset with pressure the upper limit and it is described be preset with pressure limit between first voltage comparing unit；
For distributed power generation side line voltage max and the pressure limit that is preset with to be compared, the distributed hair is determined
Whether electric side line voltage max is less than the second voltage comparing unit for being preset with pressure limit；
Second and the door that input terminal is connect with the first voltage comparing unit, second voltage comparing unit respectively；
The second time-delay relay that input terminal is connect with described second with the output end of door, the output of second time-delay relay
The input terminal of end connection described first and door.
4. photovoltaic plant according to claim 2 has pressing brake gear, which is characterized in that the bus-bar potential transformer inspection
Slowdown monitoring circuit includes：
Bus-bar potential transformer abnormal detection circuit, and respectively with the bus-bar potential transformer abnormal detection circuit and described
First the first not circuit being connect with door.
5. photovoltaic plant according to claim 2 has pressing brake gear, which is characterized in that the primary voltage mutual inductor inspection
Slowdown monitoring circuit includes：
Primary voltage mutual inductor abnormal detection circuit, and respectively with the primary voltage mutual inductor abnormal detection circuit and described
First the second not circuit being connect with door.
6. photovoltaic plant according to claim 1 has pressing brake gear, which is characterized in that described to allow combined floodgate circuit packet
It includes：It is automatic to have the pressing soft pressing plate of lock.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820044524.4U CN207719823U (en) | 2018-01-11 | 2018-01-11 | Photovoltaic plant has pressing brake gear |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820044524.4U CN207719823U (en) | 2018-01-11 | 2018-01-11 | Photovoltaic plant has pressing brake gear |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207719823U true CN207719823U (en) | 2018-08-10 |
Family
ID=63051491
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820044524.4U Active CN207719823U (en) | 2018-01-11 | 2018-01-11 | Photovoltaic plant has pressing brake gear |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207719823U (en) |
-
2018
- 2018-01-11 CN CN201820044524.4U patent/CN207719823U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN203747436U (en) | Distributed photovoltaic power generation access system | |
| CN103488159A (en) | Distribution box type smart home terminal and comprehensive protection controller | |
| CN102055368A (en) | 100-KVA micro-grid energy storage bidirectional converter | |
| CN204144918U (en) | The DC circuit breaker that a kind of high frequency switch power supply system uses | |
| CN201038736Y (en) | Motor multifunctional energy-saving intelligent protection and control cabinet | |
| CN106856332A (en) | A kind of distributed photovoltaic power generation grid-connected system | |
| CN201789441U (en) | Preinstalled type photovoltaic substation box | |
| CN104701853A (en) | 10kV distribution network serial compensation device and control method | |
| CN204761158U (en) | Case of supporting photovoltaic power's electric energy quality on -line monitoring becomes measurement and control device | |
| CN207967914U (en) | A kind of voltage protection of photovoltaic parallel in system | |
| CN204361791U (en) | A kind of circuit structure of intelligent low-pressure distribution terminal | |
| CN102843052A (en) | Rectification module of intelligent high frequency switch power supply | |
| CN205429890U (en) | It goes up switch FTU controller to adapt to net post that joins in marriage that little power supply circuit reclosed | |
| CN207719823U (en) | Photovoltaic plant has pressing brake gear | |
| CN208461470U (en) | A kind of anti-low voltage ride through device of frequency converter | |
| CN105048633A (en) | Circuit structure for intelligent low-voltage power distribution terminal | |
| CN101325334A (en) | Microcomputer type electric power engineering DC power supply cabinet | |
| CN103490382B (en) | Grid connection safety device and control method for distributed photovoltaic power generation system | |
| CN206542181U (en) | Intelligent non-pressure release coil controller | |
| CN204271652U (en) | 10kV distribution series compensation device | |
| CN203951255U (en) | Two the filling of the two electricity of a kind of DC power supply put | |
| CN207200251U (en) | A kind of power distribution network self-powered protective relaying device | |
| CN203911498U (en) | Distributed photovoltaic grid-connected protective equipment | |
| CN202840995U (en) | Rectifier module of intelligent high-frequency switching power supply | |
| CN111308182A (en) | 10kV high-voltage split prepayment metering device and connection method thereof |
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: 20220713 Address after: 325600 first floor, building 1, No. 237, Weisan Road, Yueqing Economic Development Zone, Wenzhou, Zhejiang Patentee after: Zhejiang Anfu New Energy Technology Co.,Ltd. Address before: No. 136-138, Xinguang Avenue, Xinguang Industrial Zone, Liushi Town, Yueqing City, Wenzhou City, Zhejiang Province 325604 Patentee before: WENZHOU KANGYU ELECTRICAL Co.,Ltd. |