CN109347084A - A kind of direct current ring network cabinet circuit structure and application method - Google Patents
A kind of direct current ring network cabinet circuit structure and application method Download PDFInfo
- Publication number
- CN109347084A CN109347084A CN201811482478.7A CN201811482478A CN109347084A CN 109347084 A CN109347084 A CN 109347084A CN 201811482478 A CN201811482478 A CN 201811482478A CN 109347084 A CN109347084 A CN 109347084A
- Authority
- CN
- China
- Prior art keywords
- line
- negative
- honest
- streamline
- direct current
- 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.)
- Granted
Links
- 238000000034 method Methods 0.000 title claims description 10
- 238000006243 chemical reaction Methods 0.000 claims description 11
- 230000005611 electricity Effects 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 1
- 210000004209 hair Anatomy 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000035772 mutation Effects 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J1/00—Circuit arrangements for dc mains or dc distribution networks
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J1/00—Circuit arrangements for dc mains or dc distribution networks
- H02J1/10—Parallel operation of dc sources
- H02J1/108—Parallel operation of dc sources using diodes blocking reverse current flow
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Emergency Protection Circuit Devices (AREA)
- Supply And Distribution Of Alternating Current (AREA)
Abstract
The invention discloses a kind of direct current ring network cabinet circuit structures, including positive bus-bar, negative busbar, busbar grounding line, several honest streamlines, several negative AC lines and several ground lines, the honest streamline is connected in parallel on positive bus-bar, negative AC line is connected in parallel in negative busbar, ground line is connected in parallel on busbar grounding line, and the diode of one-way conduction is in series on honest streamline and negative AC line.Small micro generation equipment positive and negative anodes to solve the problems, such as DC grid are reversed to impact power grid.
Description
Technical field
The present invention relates to field of electrical equipment more particularly to a kind of direct current ring network cabinet circuit structure and application methods.
Background technique
DC grid has the characteristics that energy-efficient, is the developing direction of the following power grid, DC grid, which has, supports distribution
The superperformance of formula power grid, but direct current has directionality, the small micro generation equipment in distributed power grid is mostly
In family, once these equipment positive and negative anodes are reversed to impact power grid.
Summary of the invention
The technical problem to be solved by the present invention is a kind of direct current ring network cabinet circuit structure is provided, to solve DC grid
Small micro generation equipment positive and negative anodes reversed the problem of power grid being impacted.
The technical scheme is that a kind of direct current ring network cabinet circuit structure, including positive bus-bar, negative busbar, bus connect
Ground wire, several honest streamlines, several negative AC lines and several ground lines, the honest streamline are connected in parallel on positive bus-bar, negative direct current
Line is connected in parallel in negative busbar, and ground line is connected in parallel on busbar grounding line, is in series with one-way conduction in honest streamline and negative AC line
Diode.
Further, the diodes in parallel on the honest streamline and negative AC line has RC circuit.
Further, switch is in series on the honest streamline, negative AC line and ground line.
Further, emergency conversion line is equipped between the positive bus-bar and negative busbar, tandem tap on conversion line of meeting an urgent need, institute
Stating diode can reversed grafting.
A kind of application method of the direct current ring network cabinet circuit structure, the described method comprises the following steps,
S1, by the reversed grafting of diode in no electric line；
S2, it is closed the switch concatenated on emergency conversion line.
The beneficial effects of the present invention are:
Compared with prior art, the present invention connects the diode of one-way conduction on honest streamline and negative AC line, is isolated small micro-
Type generating equipment positive and negative anodes are reversed to be influenced caused by power grid.The configuration of the present invention is simple, especially suitable for direct current ring network cabinet electricity
Line structure.
Detailed description of the invention
Fig. 1 is the circuit interconnect pattern of socket of the present invention；
In figure: 1 positive bus-bar, 2 busbar grounding lines, 3 negative busbars, 4 honest streamlines, 5 ground lines, 6 negative AC lines, 7 diodes, 8 hairs
Electric installation, 9 RC circuits, 10 emergency conversion lines.
Specific embodiment
With reference to the accompanying drawing and invention is described further in specific embodiment:
With reference to Fig. 1, a kind of direct current ring network cabinet circuit structure, including it is positive bus-bar 1, negative busbar 3, busbar grounding line 2, several honest
Streamline 4, several negative AC lines 6 and several ground lines 5, the honest streamline 4 is connected in parallel on positive bus-bar 1, and negative AC line 6 is connected in parallel on
In negative busbar 3, ground line 5 is connected in parallel on busbar grounding line 2, is in series with the two of one-way conduction in honest streamline 4 and negative AC line 6
Pole pipe 7.When 8 positive and negative anodes of power generator between honest streamline 4, negative AC line 6 and ground line 5 are reversed, due to diode 7
Energy one-way conduction, the electricity that power generator 8 issues cannot be transmitted on bus, reversed to power grid so as to avoid power generator 8
Influence.
Further, 6 diode 7 is parallel with RC circuit 9 in the honest streamline 4 and negative AC line.RC circuit 9 has
The ability that mutation voltage is connected, to play the role of protection diode 7.
Further, switch is in series on the honest streamline 4, negative AC line 6 and ground line 5.Switch can be with time control
Honest streamline 4, negative AC line 6 and the conducting and disconnection that are grounded 5 are made, allows to circuit convenient to overhaul, it can be with when fire
When cut off.
Further, it is equipped with emergency conversion line 10 between the positive bus-bar 1 and negative busbar 3, connects on conversion line 10 of meeting an urgent need
Switch, the diode 7 can reversed grafting.When positive bus-bar 1 and negative busbar 3 a wherein no electricity, connect in honest 4 He of streamline
Load between ground line 5 or between negative AC line 6 and ground line 5 will power off, at this time by connecting emergency conversion line 10
Switch and by the reversed grafting of diode 7 on the single line without electricity, can be temporarily using positive bus-bar 1 and negative busbar 3 wherein one
Root is as emergency.
A kind of application method of the direct current ring network cabinet circuit structure, the described method comprises the following steps,
S1, by the reversed grafting of diode 7 in no electric line；
S2, it is closed the switch concatenated on emergency conversion line 10.
The above content is a further detailed description of the present invention in conjunction with specific preferred embodiments, and it cannot be said that
Specific implementation of the invention is only limited to these instructions.For those of ordinary skill in the art to which the present invention belongs, exist
Under the premise of not departing from present inventive concept, a number of simple deductions or replacements can also be made, all shall be regarded as belonging to of the invention
Protection scope.
Claims (5)
1. a kind of direct current ring network cabinet circuit structure, including it is positive bus-bar (1), negative busbar (3), busbar grounding line (2), several honest
Streamline (4), several negative AC lines (6) and several ground lines (5), it is characterised in that: the honest streamline (4) is connected in parallel on positive bus-bar
(1) on, negative AC line (6) is connected in parallel on negative busbar (3), and ground line (5) is connected in parallel on busbar grounding line (2), honest streamline (4)
With the diode (7) for being in series with one-way conduction on negative AC line (6).
2. direct current ring network cabinet circuit structure according to claim 1, it is characterised in that: the honest streamline (4) and negative
The diode (7) of (6) is parallel with RC circuit (9) in AC line.
3. direct current ring network cabinet circuit structure according to claim 1, it is characterised in that: the honest streamline (4) is born directly
Switch is in series on streamline (6) and ground line (5).
4. according to claim 1 to direct current ring network cabinet circuit structure described in 3, it is characterised in that: the positive bus-bar (1) and negative
Emergency conversion line (10), tandem tap in emergency conversion line (10) are equipped between bus (3), the diode (7) can reversely insert
It connects.
5. a kind of application method of direct current ring network cabinet circuit structure as claimed in claim 4, it is characterised in that: the method packet
Include following steps,
S1, by diode (7) reversed grafting in no electric line；
S2, it is closed the switch concatenated in emergency conversion line (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811482478.7A CN109347084B (en) | 2018-12-05 | 2018-12-05 | Direct-current ring main unit circuit structure and use method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811482478.7A CN109347084B (en) | 2018-12-05 | 2018-12-05 | Direct-current ring main unit circuit structure and use method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109347084A true CN109347084A (en) | 2019-02-15 |
| CN109347084B CN109347084B (en) | 2024-04-23 |
Family
ID=65320001
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811482478.7A Active CN109347084B (en) | 2018-12-05 | 2018-12-05 | Direct-current ring main unit circuit structure and use method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109347084B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203504305U (en) * | 2013-10-21 | 2014-03-26 | 常熟开关制造有限公司(原常熟开关厂） | Photovoltaic direct current cabinet |
| CN205753399U (en) * | 2015-11-03 | 2016-11-30 | 珠海格力电器股份有限公司 | A kind of photovoltaic generating system and air-conditioning |
| CN107482523A (en) * | 2017-09-21 | 2017-12-15 | 中国能源建设集团广东省电力设计研究院有限公司 | Double bus scheme GIS device and its repair method, pressure test method |
| CN206807129U (en) * | 2016-12-12 | 2017-12-26 | 哈红 | A kind of high security ring main unit on-pole switch 48V DC power-supply systems |
| CN209046257U (en) * | 2018-12-05 | 2019-06-28 | 贵州电网有限责任公司 | A kind of direct current ring network cabinet circuit structure |
-
2018
- 2018-12-05 CN CN201811482478.7A patent/CN109347084B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203504305U (en) * | 2013-10-21 | 2014-03-26 | 常熟开关制造有限公司(原常熟开关厂） | Photovoltaic direct current cabinet |
| CN205753399U (en) * | 2015-11-03 | 2016-11-30 | 珠海格力电器股份有限公司 | A kind of photovoltaic generating system and air-conditioning |
| CN206807129U (en) * | 2016-12-12 | 2017-12-26 | 哈红 | A kind of high security ring main unit on-pole switch 48V DC power-supply systems |
| CN107482523A (en) * | 2017-09-21 | 2017-12-15 | 中国能源建设集团广东省电力设计研究院有限公司 | Double bus scheme GIS device and its repair method, pressure test method |
| CN209046257U (en) * | 2018-12-05 | 2019-06-28 | 贵州电网有限责任公司 | A kind of direct current ring network cabinet circuit structure |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109347084B (en) | 2024-04-23 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201623478U (en) | Photovoltaic direct-current lightning-protection header box | |
| de Oliveira et al. | Grounding and safety considerations for residential DC microgrids | |
| CN104242349A (en) | Photovoltaic system with potential induced degradation prevention function and photovoltaic inverter | |
| CN205646843U (en) | A grid -connected inverter and renewable energy power generation system for renewable energy electricity generation | |
| CN103986176A (en) | Method for connecting convertor station into multiport flexible direct current transmission system in a live manner | |
| CN205901296U (en) | High -voltage direct current power supply system | |
| CN209748126U (en) | Low pressure transfer box | |
| Inamori et al. | 380-VDC power distribution system for 4-MW-scale cloud facility | |
| CN208862564U (en) | A kind of photovoltaic DC-to-AC converter lightning protection device | |
| US10523117B2 (en) | Dead band direct current converter | |
| CN209046257U (en) | A kind of direct current ring network cabinet circuit structure | |
| US20130234524A1 (en) | Control method for arranging dc/ac converters in parallel | |
| CN202495699U (en) | Photovoltaic grid-connected power generation voltage-boosting intelligent box-type transformer substation | |
| CN104577926B (en) | The test platform of wire ground wire combination DC ice melting can be realized | |
| CN104821727B (en) | A kind of Switching Power Supply suitable for exceeding voltage class High aititude place | |
| CN208209544U (en) | A kind of novel circuit configuration of electric main power connection in power plant | |
| CN204258328U (en) | A kind of potential potential induction attenuation circuit of anti-multi-machine parallel connection photovoltaic generating system and regulator | |
| CN109347084A (en) | A kind of direct current ring network cabinet circuit structure and application method | |
| CN203839980U (en) | Photovoltaic power station grid-connected system | |
| CN204118716U (en) | A kind of distributed power source failure protecting device being applicable to multi-source electrical network | |
| CN203911500U (en) | Wind power plant grid-connected network topology structure | |
| CN205304727U (en) | Photovoltaic array conflux box | |
| CN201904741U (en) | Photovoltaic array type lightning protection junction box | |
| CN218161369U (en) | Centralized power supply box | |
| CN212660137U (en) | Photovoltaic conflux regulator cubicle |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |