CN205811528U - A kind of photovoltaic DC-to-AC converter DC side emergency disconnection system - Google Patents
A kind of photovoltaic DC-to-AC converter DC side emergency disconnection system Download PDFInfo
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- CN205811528U CN205811528U CN201620732801.1U CN201620732801U CN205811528U CN 205811528 U CN205811528 U CN 205811528U CN 201620732801 U CN201620732801 U CN 201620732801U CN 205811528 U CN205811528 U CN 205811528U
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- inverter
- header box
- emergency disconnection
- chopper
- photovoltaic
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Abstract
The utility model discloses a kind of photovoltaic DC-to-AC converter DC side emergency disconnection system, described system includes: inverter room and N number of header box.N number of described header box is connected to described inverter room；Described inverter room includes: inverter and smoke alarm, and described inverter is connected to described smoke alarm；Described header box includes: measurement and control unit and chopper；Described chopper includes shunt release；Described inverter room is connected to described header box by connection；And described N is the integer of >=3, based on completing this utility model above.
Description
Technical field
This utility model relates to technical field of electric power, particularly to a kind of photovoltaic DC-to-AC converter DC side emergency disconnection system.
Background technology
Electic protection in photovoltaic combiner box is mainly fuse and dc circuit breaker at present, and photovoltaic branch road is positive and negative through direct current
After fuse, confluxing on header box copper bar, then access chopper, finally every header box accesses inversion via direct current cables
In device DC cabinet.
When there is the condition of a fire in inverter room, expanding for avoiding the occurrence of potential safety hazard and the condition of a fire, staff need to be broken in time
Open its AC and DC side connects.In large-sized photovoltaic power station, plant area's area is big, and header box distribution dispersion, in design at present
In, disconnect inverter direct-flow side and connect, need staff to turn off each header box chopper one by one in plant area, the longest, special
It not that, such as fish light complementary type, plant area is i.e. pool, is more difficult to operate in specific type photo-voltaic power generation station.This will cause
Fire extinguishing not in time, the condition of a fire expand, cause serious equipment damage and economic loss.
In order to solve the problems referred to above, this utility model is needed badly to develop and a kind of can be broken the most efficiently when there is the condition of a fire
The technical scheme of circuit breaker.
Utility model content
The purpose of this utility model is to provide a kind of efficient photovoltaic DC-to-AC converter DC side emergency disconnection system.
In this utility model, this utility model provides a kind of photovoltaic DC-to-AC converter DC side emergency disconnection system, described
System includes: inverter room and N number of header box；
N number of described header box is connected to described inverter room；
Described inverter room includes: inverter and smoke alarm, and described inverter is connected to described smoke alarm；
Described header box includes: measurement and control unit and chopper；
Described chopper includes shunt release；
Described inverter room is connected to described header box by connection；And
Described N is the integer of >=3.
Preferably, described smoke alarm is connected to described measurement and control unit by described connection.
In another preference, described shunt release includes electric magnet and armature；And
The circuit at described electric magnet place is connected to the outfan of described measurement and control unit, forms closed-loop path.
In another preference, described chopper also includes: main contact, freely take off mouth mechanism, tripping spring, actuated element
And other protection electrical apparatus releases；And
Described shunt release and other protection electrical apparatus releases are all connected to described actuated element.
In another preference, described N is 3.
Accompanying drawing explanation
Fig. 1 is the structural representation of photovoltaic DC-to-AC converter DC side emergency disconnection system in embodiment 1.
Detailed description of the invention
The present inventor, through extensively in-depth study, develops a kind of photovoltaic DC-to-AC converter DC side first and promptly disconnects system
System, described system is increasing by a shunt release in the chopper of header box, confluxes administrative all of same inverter
Shunt release in case is taked to be uniformly controlled, and in the case of having the condition of a fire to occur, gives the administrative header box of inverter one letter
Number, make all shunt release actions, chopper tripping, disconnect the administrative all header boxs of inverter in time.
Term
Photovoltaic DC-to-AC converter: inverter is to connect resistance capacitance, with pulse by power electronic devices (MOSFET, IGBT etc.)
The mode of width modulated controls the break-make of device, and the unidirectional current that header box transmission is come is transformed into alternating current, completes photovoltaic simultaneously
The MPPT maximum power point tracking (MPPT) of assembly, it is ensured that Based Intelligent Control and anti-islanding effect etc..
Header box: header box Main Function is exactly the input of photovoltaic array to be carried out one-level conflux, is used for reducing photovoltaic battle array
Row are linked into the line of inverter, provide lightning protection function simultaneously, detect the running status of photovoltaic panel, DC quantity state acquisition and break
Road device state etc..
Shunt release: shunt release is substantially that a switching winding adds electrical apparatus release, is that a kind of remote operation divides
The adnexa of lock, just threads off and separating brake plus the voltage specified, chopper to shunt opening trip coil.
Smoke alarm: smoke alarm is internal uses ion type smog sensor, by smog in monitoring inverter room
Concentration realizes fire disasters protection.
Emergency disconnection system
Present embodiments provide for a kind of photovoltaic DC-to-AC converter DC side emergency disconnection system, described system includes: inverter
Room and N number of header box.
In present embodiment, N number of described header box is connected to described inverter room.
Described inverter room includes: inverter and smoke alarm, and described inverter is connected to described smoke alarm.
Described header box includes: measurement and control unit and chopper.
Described chopper includes shunt release.
Described inverter room is connected to described header box by connection.
Described N is the integer of >=3.
Preferably, described smoke alarm is connected to described measurement and control unit by described connection.
In another preference, described shunt release includes electric magnet and armature；And
The circuit at described electric magnet place is connected to the outfan of described measurement and control unit, forms closed-loop path.
In another preference, described chopper also includes: main contact, freely take off mouth mechanism, tripping spring, actuated element
And other protection electrical apparatus releases；And
Described shunt release and other protection electrical apparatus releases are all connected to described actuated element.
In another preference, described N is 3.
In present embodiment, measurement and control unit, by output low and high level, controls the electric magnet generation of shunt release
The size of electromagnetic force, thus control the break-make of chopper.
When the condition of a fire occurs in inverter, smoke alarm is reported to the police, and produces a signal of telecommunication, and utilization on-the-spot photovoltaic district connection will
Measurement and control unit in this signal conduction extremely each header box, measurement and control unit output high level, the electric magnet separating electrical apparatus release produces
Raw sufficiently large magnetic force, armature is inhaled dynamic by electric magnet, is then promoted by actuated element and freely takes off mouth mechanism release main contact, disconnected
Road device disconnects.
Major advantage of the present utility model includes:
A multiple header boxs are commonly connected to same inverter by (), it is simple to be uniformly controlled；
B () increases by a shunt release in the chopper of each header box, it is simple to control the break-make of chopper；
C () whole system is easy and simple to handle, can be greatly improved work efficiency.
Below in conjunction with specific embodiment, this utility model is expanded on further.Should be understood that these embodiments are merely to illustrate this
Utility model rather than limit scope of the present utility model.The experimental technique of unreceipted actual conditions in the following example is logical
Often according to normal condition, or according to the condition proposed by manufacturer.Unless otherwise indicated, otherwise percentage ratio and number are weight
Percentage ratio and parts by weight.
It should be noted that in the claim and description of this patent, the relation of such as first and second or the like
Term is used merely to separate an entity or operation with another entity or operating space, and not necessarily requires or imply
Relation or the order of any this reality is there is between these entities or operation.And, term " includes ", " comprising " or its
Any other variant is intended to comprising of nonexcludability so that include the process of a series of key element, method, article or
Equipment not only includes those key elements, but also includes other key elements being not expressly set out, or also include for this process,
The key element that method, article or equipment are intrinsic.In the case of not having more restriction, statement " include one " and limit wants
Element, it is not excluded that there is also other identical element in including the process of described key element, method, article or equipment.
Embodiment 1
Fig. 1 is the structural representation of photovoltaic DC-to-AC converter DC side emergency disconnection system in the present embodiment.
As it can be seen, present embodiments provide a kind of photovoltaic DC-to-AC converter DC side emergency disconnection system, described system includes:
Inverter room 1 and N number of header box 2.
In the present embodiment, N number of described header box 2 is connected to described inverter room 1.
Described inverter room 1 includes: inverter 3 and smoke alarm 4, and described inverter 3 is connected to described cigarette sense report
Alert device 4.
Described header box 2 includes: measurement and control unit 5 and chopper 6.
Described chopper 6 includes shunt release 7.
Described inverter room 1 is connected to described header box 2 by connection.
In the present embodiment, described N is 3.
Embodiment 2
Present embodiments provide a kind of photovoltaic DC-to-AC converter DC side emergency disconnection system, the emergency disconnection system of the present embodiment
Improved on the basis of the emergency disconnection system of embodiment 1, mainly theed improvement is that:
In the present embodiment, described smoke alarm is connected to described measurement and control unit by described connection；
Described shunt release includes electric magnet and armature；
The circuit at described electric magnet place is connected to the outfan of described measurement and control unit, forms closed-loop path；
Described chopper also includes: main contact, freely take off mouth mechanism, tripping spring, actuated element and other protection thread off
Device；
Described shunt release and other protection electrical apparatus releases are all connected to described actuated element.
The all documents mentioned at this utility model are incorporated as reference the most in this application, just as each document quilt
It is individually recited as with reference to like that.In addition, it is to be understood that after having read above-mentioned teachings of the present utility model, this area skill
This utility model can be made various changes or modifications by art personnel, and these equivalent form of values fall within the application claims equally
Book limited range.
Claims (5)
1. a photovoltaic DC-to-AC converter DC side emergency disconnection system, it is characterised in that described system includes: inverter room and N number of
Header box；
N number of described header box is connected to described inverter room；
Described inverter room includes: inverter and smoke alarm, and described inverter is connected to described smoke alarm；
Described header box includes: measurement and control unit and chopper；
Described chopper includes shunt release；
Described inverter room is connected to described header box by connection；And
Described N is the integer of >=3.
Emergency disconnection system the most according to claim 1, it is characterised in that described smoke alarm passes through described connection
It is connected to described measurement and control unit.
Emergency disconnection system the most according to claim 1, it is characterised in that described shunt release includes electric magnet and rank
Ferrum；And
The circuit at described electric magnet place is connected to the outfan of described measurement and control unit, forms closed-loop path.
Emergency disconnection system the most according to claim 1, it is characterised in that described chopper also includes: main contact, freedom
De-mouth mechanism, tripping spring, actuated element and other protection electrical apparatus releases；And
Described shunt release and other protection electrical apparatus releases are all connected to described actuated element.
Emergency disconnection system the most according to claim 1, it is characterised in that described N is 3.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620732801.1U CN205811528U (en) | 2016-07-12 | 2016-07-12 | A kind of photovoltaic DC-to-AC converter DC side emergency disconnection system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620732801.1U CN205811528U (en) | 2016-07-12 | 2016-07-12 | A kind of photovoltaic DC-to-AC converter DC side emergency disconnection system |
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| Publication Number | Publication Date |
|---|---|
| CN205811528U true CN205811528U (en) | 2016-12-14 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620732801.1U Active CN205811528U (en) | 2016-07-12 | 2016-07-12 | A kind of photovoltaic DC-to-AC converter DC side emergency disconnection system |
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| CN (1) | CN205811528U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110161290A (en) * | 2019-07-05 | 2019-08-23 | 广东南一华电气有限公司 | A kind of Multifunctional electric meter case |
-
2016
- 2016-07-12 CN CN201620732801.1U patent/CN205811528U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110161290A (en) * | 2019-07-05 | 2019-08-23 | 广东南一华电气有限公司 | A kind of Multifunctional electric meter case |
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