CN104901212B - The pre-assembled substation room of step-down combining - Google Patents
The pre-assembled substation room of step-down combining Download PDFInfo
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- CN104901212B CN104901212B CN201510374172.XA CN201510374172A CN104901212B CN 104901212 B CN104901212 B CN 104901212B CN 201510374172 A CN201510374172 A CN 201510374172A CN 104901212 B CN104901212 B CN 104901212B
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- 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
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Abstract
The invention discloses a kind of pre-assembled substation room of step-down combining, including photovoltaic DC-to-AC converter, transformer, inverter room and transformer room.Photovoltaic DC-to-AC converter is set in inverter room, and transformer is set in transformer room, is connected between inverter room and transformer room by copper bar.Photovoltaic DC-to-AC converter includes dc circuit breaker, electric capacity of voltage regulation, three phase inverter bridge, wave filter, AC circuit breaker and dropping equipment, and the wherein dc circuit breaker includes third switch (S1), third switch (S1) it is set to privates (L0) on, which includes pre-charge resistance (R1) and nonlinear resistance (R2).Pre-charge resistance (R1) one end be electrically connected with the anode of electric capacity of voltage regulation, the other end by with privates (L0) electrical connection.Nonlinear resistance (R2) one end and privates (L0) electrical connection, other end ground connection.The pre-assembled substation room of step-down combining of the present invention can improve the capacity of photovoltaic DC-to-AC converter.
Description
Technical field
The present invention relates to field of solar thermal power generation, and in particular to a kind of pre-assembled substation room of step-down combining.
Background technology
Solar energy has many advantages, such as safe and clean and resource generality, can become substitute that fossil energy is main can be again
The raw energy.Solar energy power generating is used as world community already in its developmental research, market development and industrialized manufacture technology
The focus of keen competition.
Traditional pre-assembled substation room has the disadvantage that：
(1) requirement commissioning staff in traditional pre-assembled substation room must debug inverter inside equipment, threaten
The personal safety of personnel；
(2) secondary control system uses singlechip technology or DSP control technologies, and master control borad is by layout structure, plate-making
The influence of the factors such as technique and device quality is apparent, and poor anti jamming capability is not easy to extend, and accident rate is higher, to ambient enviroment according to
Lai Xingqiang, development cycle are long；
(3) due to pre-charge process when, capacitor maximum pressure resistance is the open-circuit voltage of photovoltaic array, that is to say, that photovoltaic is inverse
The pressure resistance for becoming the power device of device has to be larger than the open-circuit voltage of photovoltaic array.Therefore, it in the string formation of photovoltaic array, is gone here and there
The open-circuit voltage of photovoltaic module should not exceed the pressure resistance of power device of inverter, therefore there are photovoltaics in traditional pre-assembled substation room
The defects of grid-connected inverters capacity is low.
Invention content
It is above-mentioned in the prior art to solve the object of the present invention is to provide a kind of pre-assembled substation room of step-down combining
Problem.
According to an aspect of the invention, there is provided a kind of pre-assembled substation room of step-down combining, pre- group of the step-down combining
It fills substation room and includes photovoltaic DC-to-AC converter, transformer, inverter room and transformer room, the photovoltaic DC-to-AC converter is set to the inversion
In device room, the transformer be set in the transformer room and the inverter room and the transformer room between pass through
Copper bar connects；The photovoltaic DC-to-AC converter include dc circuit breaker, electric capacity of voltage regulation, three phase inverter bridge, wave filter, AC circuit breaker with
And dropping equipment；Wherein described dc circuit breaker includes third and switchs (S1), third switch (S1) it is set to privates (L0)
On, the dropping equipment includes pre-charge resistance (R1) and nonlinear resistance (R2), the pre-charge resistance (R1) one end and institute
State the anode electrical connection of electric capacity of voltage regulation, the pre-charge resistance (R1) the other end pass through the first conducting wire (L1) led with the third
Line (L0) electrical connection, the nonlinear resistance (R2) one end pass through the second conducting wire (L2) and the privates (L0) electrical connection,
Nonlinear resistance (the R2) the other end ground connection and in the first conducting wire (L1) it is equipped with first switch (QB1) and institute
State the second conducting wire (L2) it is equipped with second switch (QB2)。
Preferably, the dropping equipment further includes CPU module, the first relay and the second relay, wherein, described first
Relay is electrically connected with the first switch, and second relay is electrically connected with the second switch and the CPU module
It is electrically connected respectively with first relay and second relay.
Preferably, the nonlinear resistance is adjustable resistance.
Preferably, the dropping equipment further includes power supply, the power supply and first relay, second relay
And the CPU module electrical connection for first relay, second relay and the CPU module so that provide electricity
Energy.
Preferably, the pre-charge resistance is linear resistance.
Preferably, the inverter room includes direct current remittance line cabinet, inverter bridge room, filter chamber and exchange output room,
Described in dc circuit breaker and the dropping equipment be set to the direct current converge in line cabinet, the electric capacity of voltage regulation and three phase inverter bridge
It is set in the inverter bridge room, the wave filter is set in the filter chamber and the AC circuit breaker is set to
The exchange output is indoor.
Preferably, the direct current remittance line cabinet, inverter bridge room, filter chamber and exchange output room are respectively equipped with window, lead to
The dc circuit breaker, dropping equipment, electric capacity of voltage regulation, three phase inverter bridge and wave filter can be adjusted by crossing the window
Examination.
Preferably, the direct current remittance line cabinet, inverter bridge room, filter chamber and exchange output interior are respectively equipped with heat dissipation
Device.
Preferably, the pre-assembled substation room of step-down combining includes two photovoltaic DC-to-AC converters and two sets of inverter rooms, it is each
Cover one photovoltaic DC-to-AC converter of setting in the inverter room.
Preferably, the pre-assembled substation room of step-down combining further includes arrester, lightning-arrest counter, detection inside transformer
The relay of failure and hyperbaric chamber, the relay of the arrester, lightning-arrest counter and detection power transformer interior fault are set to
In the hyperbaric chamber.
The pre-assembled substation room of step-down combining of the present invention uses horizontal layout, and in the pre-assembled substation room of step-down combining
Outside opens up window, and commissioning staff can carry out debugging efforts in outside, and safety is protected.Secondly, it is dropped by dropping equipment
Low grid-connected open-circuit voltage can improve the capacity of photovoltaic DC-to-AC converter；The photovoltaic module under the conditions of extreme cold is solved simultaneously to open a way
Overtension causes equipment that cannot open problem certainly；Again, by adding in dropping equipment, when effectively preventing grid-connected header box amount less
Existing operating voltage is less than the problem of MPPT minimum voltages.
Description of the drawings
Fig. 1 is the system connection diagram in the pre-assembled substation room of step-down combining of the present invention；
Fig. 2 is the side schematic view in the pre-assembled substation room of step-down combining of the present invention；
Fig. 3 is the floor map in the pre-assembled substation room of step-down combining of the present invention；
Fig. 4 is the connection diagram of the photovoltaic DC-to-AC converter in the pre-assembled substation room of step-down combining of the present invention；And
Fig. 5 is the control schematic diagram of the CPU module of the photovoltaic DC-to-AC converter in the pre-assembled substation room of step-down combining of the present invention.
Specific embodiment
Presently preferred embodiments of the present invention is described in detail below with reference to attached drawing, to become apparent from understanding the present invention's
Objects, features and advantages.It should be understood that embodiment shown in the drawings does not limit the scope of the present invention, and it is only
Illustrate the connotation of technical solution of the present invention.
Term explanation
Substation room：By the electrical equipment that photovoltaic DC-to-AC converter and box-type substation become one, the system is by photovoltaic arrays
The DC conversion of generation is alternating current, and completes primary boosting supply power grid and use.
Photovoltaic DC-to-AC converter：Resistance capacitance is connected by power electronic devices (MOSFET, IGBT etc.), is modulated with pulse width
Mode control device break-make, header box transmission come direct current be transformed into alternating current, while complete photovoltaic module most
High-power point tracks (MPPT), ensures intelligent control and anti-islanding effect etc..
Pre-charge resistance：In the DC bus capacitance of inverter, both end voltage is zero before charging, in equipment charge
Moment is equivalent to short circuit, can generate very big dash current, it is easy to the power device of inverter be caused to damage.Therefore it needs
In pre-charge process charge circuit connect a resistance, with play the role of limit electric current.This resistance is known as pre-charge resistance.
Electric capacity of voltage regulation：Voltage source positive and negative terminal one capacitance of parallel connection for copped wave, inversion when circuits, has filtering well
Effect；When voltage change, due to the effect of capacitive energy storage, the voltage at both ends cannot be mutated, and ensure that the steady of voltage.
Upstream voltage：Dc circuit breaker point of incoming cables port voltage.
The pre-assembled substation room of step-down combining of the present invention generally includes photovoltaic DC-to-AC converter, transformer, inverter room and transformation
Device room.Wherein photovoltaic DC-to-AC converter is set in inverter room, and transformer is set in transformer room and inverter room and transformation
Device is connected between room by copper bar.Photovoltaic DC-to-AC converter includes dc circuit breaker, electric capacity of voltage regulation, three phase inverter bridge, wave filter, exchange
Breaker and dropping equipment；Wherein the dc circuit breaker includes third switch (S1), third switch (S1) be set to third and lead
Line (L0) on, which includes pre-charge resistance (R1) and nonlinear resistance (R2), the pre-charge resistance (R1) one end with
The anode electrical connection of the electric capacity of voltage regulation, the pre-charge resistance (R1) the other end pass through the first conducting wire (L1) and the privates
(L0) electrical connection, the nonlinear resistance (R2) one end pass through the second conducting wire (L2) and the privates (L0) electrical connection, this is non-thread
Property resistance (R2) the other end ground connection and in first conducting wire (L1) it is equipped with first switch (QB1) and in second conducting wire
(L2) it is equipped with second switch (QB2)。
Fig. 1 is the system connection diagram in the pre-assembled substation room of step-down combining of the present invention；Fig. 2 be the present invention decompression simultaneously
Net the side schematic view in pre-assembled substation room；Fig. 3 is the floor map in the pre-assembled substation room of step-down combining of the present invention.Such as figure
Shown in 1~3, the pre-assembled substation room of step-down combining includes two photovoltaic DC-to-AC converters 100, transformers 200, an inverter rooms
100A, transformer room 9 and hyperbaric chamber 11.Although in the present embodiment, the pre-assembled substation room of step-down combining includes hyperbaric chamber 11, so
And it will be understood to those skilled in the art that the pre-assembled substation room of step-down combining of the present invention can not also include hyperbaric chamber 11.
Wherein photovoltaic DC-to-AC converter 100 is set in the 100A of inverter room, and transformer 200 is set in transformer room 9, inverter room 100A
It is connected between transformer room 200A by copper bar.
As shown in Figure 1, photovoltaic DC-to-AC converter 100 includes dc circuit breaker 10, electric capacity of voltage regulation 20, three phase inverter bridge 30, filtering
Device 40, AC circuit breaker 50 and dropping equipment.Wherein, dc circuit breaker 10, electric capacity of voltage regulation 20, three phase inverter bridge 30, filtering
Device 40 and AC circuit breaker 50 are sequentially connected electrically, and for connecting photovoltaic module, AC circuit breaker 50 is used for dc circuit breaker 10
Connect transformer 200.Dropping equipment includes CPU module 51, the first relay 52, power supply 53, pre-charge resistance R1, non-linear electricity
Hinder R2, the first conducting wire L1, the second conducting wire L2, first switch QB1And second switch QB2.Wherein, the first relay 52 and second after
Electric appliance 54 is two to open two and close independent contact.
As shown in figures 2-3, inverter room 100A includes direct current remittance line cabinet 1, inverter bridge room 4, filter chamber 5 and exchange
Room 7 is exported, wherein dc circuit breaker 10 and dropping equipment is set to 1 interior, electric capacity of voltage regulation 20 of direct current remittance line cabinet and three phase inverter bridge
30 are set in inverter bridge room 4, wave filter 40 is set in filter chamber 5 and AC circuit breaker 50 is set to exchange output
In room 7.
Direct current remittance line cabinet 1 offers window 1A, and inverter bridge room 4 offers window 4A, and filter chamber 5 offers window 5A,
Exchange output room 7 offers window 7A, and hyperbaric chamber 11 offers window 11A, can be right respectively by window 1A, 4A, 5A and 7A
Dc circuit breaker 10, dropping equipment, electric capacity of voltage regulation 20, three phase inverter bridge 30 and AC circuit breaker 50 are debugged.
Radiator 1B is equipped in direct current remittance line cabinet 1, radiator 4B is equipped in inverter bridge room 4, in filter chamber 5
It is interior to be equipped with radiator 5B and be equipped with radiator 7B in exchange output room 7.Pass through radiator 1B, 4B, 5B and 7B
Effect can prevent direct current remittance line cabinet 1, inverter bridge room 4, filter chamber 5 and the temperature of exchange output room 7 excessively high.
In the present invention, the pre-assembled substation room of a step-down combining includes two photovoltaic DC-to-AC converters, 100, two inverter rooms
100A, 200, pressure change chambers 9 of a transformer and a hyperbaric chamber 11, wherein each inverter 100 are set to each
In a inverter room 100A, transformer 200 is set in transformer room 9, arrester, lightning-arrest counter and detection inside transformer
The relay (not shown) of failure is set in hyperbaric chamber 11.
Fig. 4 is the connection diagram of the photovoltaic DC-to-AC converter 100 in the pre-assembled substation room of step-down combining of the present invention.Such as Fig. 4 institutes
Show, dc circuit breaker 10 includes multiple switch, wherein third switch S1It is set to privates L0On, pre-charge resistance R1One
End passes through the first conducting wire L1It is connected to the anode of electric capacity of voltage regulation 20, pre-charge resistance R1The other end pass through the first conducting wire L1Connection
In privates L0On, nonlinear resistance R2One end pass through the second conducting wire L2It is connected to privates L0On, nonlinear resistance R2
The other end ground connection, in the first conducting wire L1It is equipped with first switch QB1With in the second conducting wire L2It is equipped with second switch QB2.Its
In, the third switch S of dc circuit breaker 101Pass through privates L again after first in parallel with other all switches0With electric capacity of voltage regulation 20
Series connection.
In the present embodiment, nonlinear resistance R2For adjustable resistance, by adjusting nonlinear resistance R2Third can be controlled to open
Close S1The size of upstream voltage and pre-charge resistance R1For linear resistance, pass through pre-charge resistance R1Voltage stabilizing can be prevented electric
Hold it is breakdown,
Power supply 53 is electrically connected with the first relay 52, the second relay 54 and CPU module 51, so as to be the first relay
52nd, the second relay 54 and CPU module 51 provide electric energy.54 electricity of 51 and first relay 52 of CPU module and the second relay
So as to send instruction to the first relay 52 and the second relay 54 respectively, the first relay 52 and the second relay 54 connect for connection
It receives the instruction from CPU module 51 and controls first switch QB1With second switch QB2Opening and closing.
Fig. 5 is the schematic diagram of CPU module.As shown in figure 5, CPU module can send out signal 101,102,103,104,105
And 107, wherein signal 101 controls first switch QB1It closes a floodgate；Signal 102 controls first switch QB1Separating brake；Signal 103 controls
Second switch QB2It closes a floodgate；Signal 104 controls second switch QB2Separating brake；Signal 105 controls first switch QB1Close isloation state；Signal
106 control second switch QB2Close isloation state；Signal 107 controls third switch S1State.
When needing to open, carried out by procedure below.
(1) manual preliminary filling eletric button (not shown) is pressed, CPU module, which sends out signal 103, enables the second relay 54 act, from
And the second relay 54 control second switch QB2It is closed, wherein, by adjusting nonlinear resistance R2Voltage U can be controlled1It is big
It is small；
(2) when third switch S1 upstream voltages are reduced to voltage U1When, CPU module sends out 101 signals and enables the first relay
52 actions, so as to control first switch QB1It is closed, pre-charge resistance R1On flow through electric current, electric capacity of voltage regulation 20 is pre-charged.
(3) after the completion of the precharge of electric capacity of voltage regulation 20, it is closed the third switch S of dc circuit breaker 101It all is opened with other
It closes；
(4) after photovoltaic DC-to-AC converter meets entry condition, start photovoltaic DC-to-AC converter；
(5) after the photovoltaic DC-to-AC converter parallel-adder settle-out time t, CPU module, which sends out 104 signals, enables the second relay 54 dynamic
Make, so as to disconnect Switch Second Switch QB2, machine process is opened so as to complete entire photovoltaic DC-to-AC converter.
In the present invention, time t be photovoltaic DC-to-AC converter output power from 0 increase to needed for peak power output when
Between.
According to another aspect of the present invention, a kind of startup method of photovoltaic DC-to-AC converter is additionally provided, photovoltaic DC-to-AC converter includes
Dc circuit breaker, electric capacity of voltage regulation, three phase inverter bridge, wave filter, AC circuit breaker and dropping equipment, wherein, the direct current breaks
Road device includes third and switchs S1, third switch S1It is set to privates L0On, the dropping equipment includes pre-charge resistance R1
With nonlinear resistance R2, the pre-charge resistance R1One end be electrically connected with the anode of the electric capacity of voltage regulation, the pre-charge resistance
R1The other end pass through the first conducting wire L1With the privates L0Electrical connection, one end of the nonlinear resistance is led by second
Line L2With the privates L0Electrical connection, the other end of the nonlinear resistance are grounded and in the first conducting wire L1On set
There is first switch QB1With in the second conducting wire L2It is equipped with second switch QB2, wherein, it the described method comprises the following steps：
Step 1: it is closed second switch QB2；
Step 2: when third switchs S1Upstream voltage is reduced to voltage U1When, it is closed first switch QB1；
Step 3: after 20 charging complete of electric capacity of voltage regulation, it is closed the third switch S of dc circuit breaker 101And other are all
Switch；
Step 4: after photovoltaic DC-to-AC converter meets entry condition, start photovoltaic DC-to-AC converter；
Step 5: after photovoltaic DC-to-AC converter parallel-adder settle-out time t, second switch QB is disconnected2, complete entire photovoltaic DC-to-AC converter
Open machine process.
Illustrate the superiority of the present invention by taking the photovoltaic DC-to-AC converter of a certain rated output 750MW as an example below.
The input of photovoltaic DC-to-AC converter, output performance parameter are shown in Tables 1 and 2 respectively.The parameter of accessed photovoltaic module is shown in Table
3。
1 photovoltaic DC-to-AC converter input parameter of table
| Maximum DC input power (kW) | MPPT voltage ranges (VDC) | Maximum input direct-current electric current (A) |
| 825 | 450~820 | 1600 |
2 photovoltaic DC-to-AC converter output parameter of table
| Rated output power (kW) | Peak power output (kW) | Rated operational voltage (V) | Rated output frequency (Hz) |
| 750 | 810 | 315 | 50 |
The performance parameter of 3 photovoltaic module of table
| Rated power (kW) | Open-circuit voltage (V) | Operating voltage (V) |
| 310 | 45.45 | 37.00 |
If photovoltaic module is concatenated using traditional photovoltaic DC-to-AC converter, then photovoltaic module often concatenate into block number NmaxIt should
This meets the following formula：
45.45Nmax≤820 (1)
The solution of formula (1) is；
Nmax=18 (2)
If photovoltaic DC-to-AC converter using the present invention concatenates photovoltaic module, operating voltage is reduced to by open-circuit voltage 45.45V
37.00V, then photovoltaic module often concatenate into block number NmaxFormula (3) should be met
37.00Nmax≤820 (3)
The solution of formula (3) is：
Nmax=22 (4)
So the rated power of photovoltaic DC-to-AC converter can rise to
The photovoltaic inverter grid-connected capacity of the present invention is significantly improved it can be seen from formula (5).Compared to traditional light
Inverter is lied prostrate, grid connection capacity improves 22.2 ℅.
Therefore, by the pre-assembled substation room of step-down combining of the present invention, the grid connection capacity of photovoltaic DC-to-AC converter can be improved.This
Outside, the present invention can also solve that the photovoltaic module open-circuit voltage under the conditions of extreme cold is excessively high to cause photovoltaic DC-to-AC converter that cannot open certainly
The problem of.
The pre-assembled substation room of step-down combining of the present invention uses horizontal layout, and in the pre-assembled substation room of step-down combining
Outside opens up window, and commissioning staff can carry out debugging efforts in outside, and safety is protected.Secondly, it is dropped by dropping equipment
Low grid-connected open-circuit voltage can improve the capacity of photovoltaic DC-to-AC converter；The photovoltaic module under the conditions of extreme cold is solved simultaneously to open a way
Overtension causes equipment that cannot open problem certainly；Again, by adding in dropping equipment, when effectively preventing grid-connected header box amount less
Existing operating voltage is less than the problem of MPPT minimum voltages.
Presently preferred embodiments of the present invention is described in detail above, it is understood that being said having read the above-mentioned of the present invention
After awarding content, those skilled in the art can make various modifications or changes to the present invention.Such equivalent forms equally fall within this
Apply for the appended claims limited range.
Claims (10)
1. a kind of pre-assembled substation room of step-down combining, it is characterised in that：It is inverse that the pre-assembled substation room of step-down combining includes photovoltaic
Become device, transformer, inverter room and transformer room, the photovoltaic DC-to-AC converter to be set in the inverter room, the transformer
Be set in the transformer room and the inverter room and the transformer room between connected by copper bar；The photovoltaic
Inverter includes dc circuit breaker, electric capacity of voltage regulation, three phase inverter bridge, wave filter, AC circuit breaker and dropping equipment；Wherein institute
It states dc circuit breaker and includes third switch (S1), third switch (S1) it is set to privates (L0) on, the dropping equipment packet
Include pre-charge resistance (R1) and nonlinear resistance (R2), the pre-charge resistance (R1) one end and the electric capacity of voltage regulation anode
Electrical connection, the pre-charge resistance (R1) the other end pass through the first conducting wire (L1) and the privates (L0) electrical connection, it is described
Nonlinear resistance (R2) one end pass through the second conducting wire (L2) and the privates (L0) electrical connection, the nonlinear resistance
(R2) the other end ground connection and in the first conducting wire (L1) it is equipped with first switch (QB1) and in the second conducting wire (L2)
It is equipped with second switch (QB2), during startup, it is closed second switch (QB2)；When third switchs S1Upstream voltage be reduced to voltage
U1When, it is closed first switch (QB1)；After the electric capacity of voltage regulation charging complete, it is closed third switch (S1)；Work as photovoltaic DC-to-AC converter
After meeting entry condition, start photovoltaic DC-to-AC converter；And after photovoltaic DC-to-AC converter parallel-adder settle-out time t, second switch is disconnected
(QB2), start-up course is completed, wherein by adjusting nonlinear resistance (R2) voltage U can be controlled1Size.
2. the pre-assembled substation room of step-down combining according to claim 1, which is characterized in that the dropping equipment further includes
CPU module, the first relay and the second relay, wherein, first relay is electrically connected with the first switch, and described
Two relays be electrically connected with the second switch and the CPU module respectively with first relay and described second after
Electric appliance is electrically connected.
3. the pre-assembled substation room of step-down combining according to claim 1, which is characterized in that the nonlinear resistance is adjustable
Resistance.
4. the pre-assembled substation room of step-down combining according to claim 2, which is characterized in that the dropping equipment further includes electricity
Source, it is described first that the power supply is electrically connected with first relay, second relay and the CPU module
Relay, second relay and the CPU module provide electric energy.
5. the pre-assembled substation room of step-down combining according to claim 1, which is characterized in that the pre-charge resistance is linear
Resistance.
6. the pre-assembled substation room of step-down combining according to claim 1, which is characterized in that the inverter room includes direct current
Remittance line cabinet, inverter bridge room, filter chamber and exchange output room, wherein the dc circuit breaker and the dropping equipment are set to
The direct current converges in line cabinet, the electric capacity of voltage regulation and three phase inverter bridge is set to the inverter bridge room in, the wave filter is set
In in the filter chamber and the AC circuit breaker to be set to the exchange output indoor.
7. the pre-assembled substation room of step-down combining according to claim 6, which is characterized in that the direct current remittance line cabinet, inversion
Bridge room, filter chamber and exchange output room are respectively equipped with window, can be to the dc circuit breaker, decompression by the window
Device, electric capacity of voltage regulation, three phase inverter bridge and wave filter are debugged.
8. the pre-assembled substation room of step-down combining according to claim 6, which is characterized in that the direct current remittance line cabinet, inversion
Bridge room, filter chamber and exchange output interior are respectively equipped with radiator.
9. the pre-assembled substation room of step-down combining according to claim 1, which is characterized in that pre-assembled point of the step-down combining
Station includes two photovoltaic DC-to-AC converters and two sets of inverter rooms, sets a photovoltaic inversion described in every suit in inverter room
Device.
10. the pre-assembled substation room of step-down combining according to claim 1, which is characterized in that the step-down combining is pre-assembled
Substation room further includes arrester, lightning-arrest counter, the relay for detecting power transformer interior fault and hyperbaric chamber, the arrester,
The relay of lightning-arrest counter and detection power transformer interior fault is set in the hyperbaric chamber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510374172.XA CN104901212B (en) | 2015-06-30 | 2015-06-30 | The pre-assembled substation room of step-down combining |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510374172.XA CN104901212B (en) | 2015-06-30 | 2015-06-30 | The pre-assembled substation room of step-down combining |
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| Publication Number | Publication Date |
|---|---|
| CN104901212A CN104901212A (en) | 2015-09-09 |
| CN104901212B true CN104901212B (en) | 2018-07-06 |
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| CN105576706B (en) * | 2016-03-23 | 2018-05-22 | 中国电力工程顾问集团华东电力设计院有限公司 | The pre-assembled substation room of five phase photovoltaic DC-to-AC converters and its control method |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11312022A (en) * | 1998-04-28 | 1999-11-09 | Yaskawa Electric Corp | Inverter device for generating photovoltatic power and method for controlling the same device |
| US20090207543A1 (en) * | 2008-02-14 | 2009-08-20 | Independent Power Systems, Inc. | System and method for fault detection and hazard prevention in photovoltaic source and output circuits |
| CN201910625U (en) * | 2010-10-14 | 2011-07-27 | 国网电力科学研究院 | Grid-connected photovoltaic inverter based on super capacitor |
| CN202817566U (en) * | 2012-07-31 | 2013-03-20 | 特变电工股份有限公司 | Prefabricated transformer substation for photovoltaic power generation |
| CN204992375U (en) * | 2015-06-30 | 2016-01-20 | 中国电力工程顾问集团华东电力设计院有限公司 | Step -down is incorporated into power networks and is assembled substation room in advance |
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2015
- 2015-06-30 CN CN201510374172.XA patent/CN104901212B/en active Active
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