CN103607032B - Renewable energy power generation, power transmission and transformation and electrical network access integral system - Google Patents
Renewable energy power generation, power transmission and transformation and electrical network access integral system Download PDFInfo
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- CN103607032B CN103607032B CN201310589012.8A CN201310589012A CN103607032B CN 103607032 B CN103607032 B CN 103607032B CN 201310589012 A CN201310589012 A CN 201310589012A CN 103607032 B CN103607032 B CN 103607032B
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Abstract
The present invention relates to renewable energy power generation, power transmission and transformation and electrical network and access integral system.The access system that purpose is to provide can be avoided impacting electrical network or trawlnet.Technical scheme is: renewable energy power generation, power transmission and transformation and electrical network access integral system, including regenerative resource integrated power generation unit, at least one HVDC transmission line, at least one inverter and generating field computer supervisory control system；The outfan of each regenerative resource integrated power generation unit is connected on high voltage dc bus, one end of HVDC transmission line is also connected on high voltage dc bus HVDC, the other end of HVDC transmission line is connected to the direct-flow input end of high-power inverter, and the ac output end of high-power inverter is connected to exchange bulk power grid；Generating field computer supervisory control system is connected with dispatching of power netwoks control centre and accepts traffic order, and generating field computer supervisory control system is also connected with regenerative resource integrated power generation unit and issues generating setting value.
Description
Technical field
The invention belongs to generation of electricity by new energy, technical field of electric power transmission, be specifically related to a kind of regenerative resource (wind energy,
Solar energy) generating, unsteady flow, energy storage, transmission of electricity and the integral system of incoming transport bulk power grid.
Background technology
Along with the supply shortage of the non-renewable energy resources such as oil, coal, natural gas, and use non-renewable energy
The environmental pollution that source is brought is day by day serious, the countries in the world exploitation to the renewable and clean energy resource such as wind energy, solar energy
The most increasingly paying attention to utilizing, the proportion shared by renewable energy power generation improves the most rapidly.
(1) wind power generation:
Capture wind energy, be converted into electric energy and send into the wind energy turbine set of electrical network mainly by 5 part structures by transmission line of electricity
Become: 1) wind power generating set (including converter plant)；2) wind power generating set power frequency (50Hz) rises buckling
Depressor (the port low-voltage of wind-driven generator is raised to middle pressure: 10KV, 35KV)；3) collection electric line (will be divided
Spread the wind power generating set put to be generated electricity and can collect)；4) wind energy turbine set primary substation is (by voltage therefrom
Press and continue to rise to high pressure: 110KV, 220KV)；5) ultra-high-tension power transmission line.
Although wind power generation has been used widely, but still there is following problems: 1) wind-powered electricity generation has significantly
Randomness and intermittence, electricity can be relatively unstable, needs by frequently regulating other kinds of generating
The generated output of unit (such as thermal power generation unit) carries out network load balance, significantly reduces this kind of machine
The economy that group is run；2) low voltage ride-through capability of most of Wind turbines is relatively low, occurs short at bulk power grid
Road fault is easy off-grid when causing system voltage to reduce, and electrical network causes powerful impact, the safety to bulk power grid
Stable operation constitutes the biggest danger；3) construction cost of marine wind electric field voltage boosting transforming platform is high；4) due to
Being affected by capacitance charging current, at the bottom of high-pressure undersea, ac cable transmission line capability reduces rapidly with the increase of length；
5) having more wind power generation field from exchanging the distant of bulk power grid, long-distance sand transport capacity is very limited.
(2) solar electrical energy generation；
Large Copacity grid-connected solar energy power generating field is mainly made up of following 4 parts: 1) solar battery group
Part (photovoltaic array)；2) (DC inverter of solaode is become photovoltaic DC-to-AC converter by DC/AC inverter
Alternating current) and power frequency (50Hz) booster transformer；3) photovoltaic generation field primary substation is (by voltage liter
High to medium-pressure or high pressure: 35KV, 110KV, 220KV)；4) ultra-high-tension power transmission line.
Similar with wind-power electricity generation, there is following problems in solar energy power generating: 1), solar electricity generation field is by season
Joint, relatively big with the impact of weather round the clock, there is significant randomness and intermittence, electricity can be relatively unstable
Fixed, need to be entered by the generated output of the frequently other kinds of generating set of regulation (such as thermal power generation unit)
Row network load balances, and significantly reduces the economy of this kind of unit operation；2), some photovoltaic DC-to-AC converters
Low voltage ride-through capability is relatively low, short trouble easy off-grid when causing system voltage to reduce occurs at bulk power grid, right
Electrical network causes powerful impact, and the safe and stable operation of bulk power grid is constituted the biggest danger；3), there are more much appearances
Amount solar electricity generation field is distant from exchange bulk power grid, and long-distance sand transport capacity is very limited.
Summary of the invention
The technical problem to be solved is the deficiency overcoming above-mentioned background technology, it is provided that a kind of renewable energy
Source generating, power transmission and transformation and electrical network access integral system, and the reliability of this access system is high, can avoid electricity
Net impacts or trawlnet, and has simple in construction, lower-cost feature.
The technical solution used in the present invention is as follows:
Renewable energy power generation, power transmission and transformation and electrical network access integral system, including several regenerative resources one
Body elelctrochemical power generation unit, at least one HVDC transmission line, at least one high-power inverter and generating field
Computer supervisory control system；It is characterized in that: the outfan of each described regenerative resource integrated power generation unit is even
Receiving on high voltage dc bus, one end of HVDC transmission line is also connected on high voltage dc bus HVDC,
The other end of HVDC transmission line is connected to the direct-flow input end of high-power inverter, high-power inverter
Ac output end is connected to exchange bulk power grid；Generating field computer supervisory control system is connected with dispatching of power netwoks control centre
And accept the traffic order of dispatching of power netwoks control centre, generating field computer supervisory control system also with regenerative resource one
Body elelctrochemical power generation unit connects and issues generating setting value to regenerative resource integrated power generation unit.
Described regenerative resource integrated power generation unit includes a renewable energy power generation device, a modularity
Great-power electromagnetic isolated form DC/DC unsteady flow increasing apparatus, an energy storage device and a cell controller；Can
The outfan of generating set of renewable energy resource is connected on low-voltage direct bus LVDC, and energy storage device outfan also connects
Receiving on same low-voltage direct bus LVDC, modular high-power electromagnetic isolation type DC/DC unsteady flow liter press-fits
The low-pressure side put also is connected on same low-voltage direct bus LVDC, and high-pressure side is connected to the high pressure of generating field
On dc bus HVDC, cell controller and renewable energy power generation device, modular high-power electromagnetic isolation
Type DC/DC unsteady flow increasing apparatus, energy storage device connect.
Described renewable energy power generation device is at least one photovoltaic battery array, at least one is with based on IGBT
The three-phase of module or the asynchronous wind driven generator of heterogeneous active PWM rectification circuit, at least one is with rectification circuit
Permanent magnet direct-drive wind-force generating machine, at least one synchro wind generator with rectification circuit at least one
Kind；
The outfan of photovoltaic battery array is all received on low-voltage direct bus LVDC；
Three-phase that the ac output end of asynchronous wind driven generator is corresponding with asynchronous wind driven generator or heterogeneous active PWM
The ac input end of rectification circuit connects, and the DC output end of three-phase or heterogeneous active PWM rectification circuit is connected to
On low-voltage direct bus LVDC；
The rectification that the ac input end of permanent magnet direct-drive wind-force generating machine is corresponding with permanent magnet direct-drive wind-force generating machine
The ac input end of circuit connects, and the DC output end of this rectification circuit is connected on low-voltage direct bus LVDC；
The exchange of the rectification circuit that the ac output end of synchro wind generator is corresponding with synchro wind generator is defeated
Entering end to connect, the DC output end of this rectification circuit is connected on low-voltage direct bus LVDC；
The rectification circuit of described permanent magnet direct-drive wind-force generating machine or the rectification circuit of synchro wind generator be with
One of lower form:
1) described rectification circuit is diode rectifier circuit；
2) described rectification circuit is that diode rectifier circuit adds Boost circuit；
3) described rectification circuit is that diode rectifier circuit adds pfc circuit；
4) described rectification circuit is three-phase based on IGBT module or heterogeneous active PWM rectification circuit.
Described cell controller includes microprocessor unit and connected signal acquisition circuit, communication mould
Block；Signal acquisition circuit and described renewable energy power generation device, modular high-power electromagnetic isolation type DC/DC
Unsteady flow increasing apparatus, energy storage device connect to gather analog-and digital-variable, communication module and described generating electric field meter
Calculate machine monitoring system to connect.
Described energy storage device includes the two-way DC/DC current transformer of a non-electromagnetic isolation type and a super capacitor
System, or the two-way DC/DC current transformer of a non-electromagnetic isolation type and a battery system；Non-electromagnetism
One end of the two-way DC/DC current transformer of isolated form and low-voltage direct bus LVDC connect, the other end and accumulator
System or super capacitor system connect.
The two-way DC/DC current transformer of described non-electromagnetic isolation type include a reactor L, capacitor C,
Two IGBT or MOSFET modules T1, T2, two diodes D1, D2；Wherein,
IGBT or MOSFET module T1, diode D2, reactor L, capacitor C constitute a BUCK electricity
Road；
IGBT or MOSFET module T2, diode D1, reactor L, capacitor C constitute a BOOST electricity
Road.
Described modular high-power electromagnetic isolation type DC/DC unsteady flow increasing apparatus includes multiple identical electromagnetism
Isolated form DC/DC current transformer, the input parallel connection of all electromagnetic isolation type DC/DC current transformers is followed by renewable
On low-voltage direct bus LVDC in energy integrated power generation unit, all electromagnetic isolation type DC/DC current transformers
Outfan in series or in parallel be followed by high voltage dc bus HVDC.
The structure of described electromagnetic isolation type DC/DC current transformer is one of following form:
1) described electromagnetic isolation type DC/DC current transformer includes a low-pressure side being made up of IGBT or MOSFET
Full-bridge inverter and DC capacitor thereof, LC series resonant circuit being made up of inductance Lr and electric capacity Cr,
The high frequency transformer of secondary coil more than and multiple high-pressure sides rectification circuit；
Described high-pressure side rectification circuit is straight by a diode full bridge rectifier and diode full bridge rectifier
The output filter circuit of stream side is constituted, and this output filter circuit is a capacitor or a LC filter circuit；
The DC terminal of described low-pressure side full-bridge inverter is as the input of described electromagnetic isolation type DC/DC current transformer
End is connected in parallel on low-voltage direct bus LVDC, the exchange end of low-pressure side full-bridge inverter and LC series resonant circuit
After series connection, the primary coil with high frequency transformer connects；
The secondary coil of the ac input end of each high-pressure side rectification circuit high frequency transformer corresponding thereto is even
Connect, as described electromagnetic isolation type DC/DC unsteady flow after the DC output end cascade of all high-pressure sides rectification circuit
The outfan of device；
2) described electromagnetic isolation type DC/DC current transformer includes a low-pressure side being made up of IGBT or MOSFET
Full-bridge inverter and DC capacitor thereof, a LLC being made up of inductance Lr and inductance Lm and electric capacity Cr are humorous
Shake circuit, the high frequency transformer of secondary coil more than and multiple high-pressure sides rectification circuit；
Described high-pressure side rectification circuit is by a diode full bridge rectifier and DC side output filter circuit thereof
Constituting, this output filter circuit is a capacitor or a LC filter circuit；
The DC terminal of described low-pressure side full-bridge inverter is as the input of described electromagnetic isolation type DC/DC current transformer
End is connected in parallel on low-voltage direct bus LVDC, in the exchange end of low-pressure side full-bridge inverter and LLC resonance circuit
Inductance Lr and electric capacity Cr series connection after and high frequency transformer primary coil connect, in LLC resonance circuit
Inductance Lm and the parallel connection of primary windings of high frequency transformer；
The secondary coil of the ac input end of described high-pressure side rectification circuit high frequency transformer corresponding thereto is even
Connect, as described electromagnetic isolation type DC/DC unsteady flow after the DC output end cascade of all high-pressure sides rectification circuit
The outfan of device；
3) described electromagnetic isolation type DC/DC current transformer includes a low-pressure side being made up of IGBT or MOSFET
Full-bridge inverter and DC capacitor thereof, a LCC being made up of inductance Lr and electric capacity Cp and electric capacity Cr are humorous
Shake circuit, the high frequency transformer of secondary coil more than and multiple high-pressure sides rectification circuit；
Described high-pressure side rectification circuit is by a diode full bridge rectifier and DC side output filter circuit thereof
Constituting, this output filter circuit is a capacitor or a LC filter circuit；
The DC terminal of described low-pressure side full-bridge inverter is as the input of described electromagnetic isolation type DC/DC current transformer
End is connected in parallel on low-voltage direct bus LVDC, in the exchange end of low-pressure side full-bridge inverter and LCC resonance circuit
Inductance Lr and electric capacity Cr series connection after and high frequency transformer primary coil connect, in LCC resonance circuit
Electric capacity Cp and the parallel connection of primary windings of high frequency transformer；
The secondary coil of the ac input end of described high-pressure side rectification circuit high frequency transformer corresponding thereto is even
Connect, as described electromagnetic isolation type DC/DC unsteady flow after the DC output end cascade of all high-pressure sides rectification circuit
The outfan of device；
4) described electromagnetic isolation type DC/DC current transformer includes a low-pressure side being made up of IGBT or MOSFET
Full-bridge inverter and DC capacitor thereof, LC series resonant circuit being made up of inductance Lr and electric capacity Cr,
The high frequency transformer of secondary coil more than and multiple high-pressure sides voltage doubling rectifing circuit；
The DC terminal of described low-pressure side full-bridge inverter is as the input of described electromagnetic isolation type DC/DC current transformer
End is connected in parallel on low-voltage direct bus LVDC, the exchange end of low-pressure side full-bridge inverter and LC series resonant circuit
After series connection, the primary coil with high frequency transformer connects；
The secondary coil of the input of described high-pressure side voltage doubling rectifing circuit high frequency transformer corresponding thereto is even
Connect, as described electromagnetic isolation type DC/DC after the DC output end cascade of all high-pressure sides voltage doubling rectifing circuit
The outfan of current transformer；
5) described electromagnetic isolation type DC/DC current transformer includes a low-pressure side being made up of IGBT or MOSFET
Full-bridge inverter and DC capacitor thereof, a LLC being made up of inductance Lr and inductance Lm and electric capacity Cr are humorous
Shake circuit, the high frequency transformer of secondary coil more than and multiple high-pressure sides voltage doubling rectifing circuit；
The DC terminal of described low-pressure side full-bridge inverter is as the input of described electromagnetic isolation type DC/DC current transformer
End is connected in parallel on low-voltage direct bus LVDC, in the exchange end of low-pressure side full-bridge inverter and LLC resonance circuit
Inductance Lr and electric capacity Cr series connection after and high frequency transformer primary coil connect, in LLC resonance circuit
Inductance Lm and the parallel connection of primary windings of high frequency transformer；
The secondary coil of the input of described high-pressure side voltage doubling rectifing circuit high frequency transformer corresponding thereto is even
Connect, as described electromagnetic isolation type DC/DC after the DC output end cascade of all high-pressure sides voltage doubling rectifing circuit
The outfan of current transformer；
6) described electromagnetic isolation type DC/DC current transformer includes a low-pressure side being made up of IGBT or MOSFET
Full-bridge inverter and DC capacitor thereof, a LCC being made up of inductance Lr and electric capacity Cp and electric capacity Cr are humorous
Shake circuit, the high frequency transformer of secondary coil more than and multiple high-pressure sides voltage doubling rectifing circuit；
The DC terminal of described low-pressure side full-bridge inverter is as the input of described electromagnetic isolation type DC/DC current transformer
End is connected in parallel on low-voltage direct bus LVDC, in the exchange end of low-pressure side full-bridge inverter and LLC resonance circuit
Inductance Lr and electric capacity Cr series connection after and high frequency transformer primary coil connect, in LLC resonance circuit
Electric capacity Cp and the parallel connection of primary windings of high frequency transformer；
The secondary coil of the input of described high-pressure side voltage doubling rectifing circuit high frequency transformer corresponding thereto is even
Connect, as described electromagnetic isolation type DC/DC after the DC output end cascade of all high-pressure sides voltage doubling rectifing circuit
The outfan of current transformer.
Described high-power inverter is current source inverter, or is at DC terminal series diode check (non-return) valve
Voltage source inverter.
Described inductance Lr is single inductance element, or the leakage inductance of described high frequency transformer；Another institute
Stating inductance Lm is single inductance element, or the magnetizing inductance of described high frequency transformer.
The invention have the advantages that: regenerative resource (wind energy, solar energy) TRT is through one
Modular high-power electromagnetic isolation type DC/DC unsteady flow increasing apparatus based on high frequency technique is carried out: unsteady flow, electromagnetism
Being directly connected to high voltage dc bus after isolation, boosting, electricity directly can pass through DC power transmission line and exchange
Grid side inverter input AC bulk power grid；Further, low-voltage direct side configuration certain capacity energy storage device with
Improve the adjustability of renewable energy power generation plan；With traditional regenerative resource (wind energy, solar energy) generating
Field and transmission system thereof are compared, and the present invention uses HVDC Transmission Technology to be transported to exchange big electricity by the electric energy sent
Net, regenerative resource (wind energy, solar energy) generating field need not: 1) duplex frequency boostering transformer；2) power frequency
Inverter；3) generating field power transmission and transforming equipment (main transformer, chopper etc.).
Therefore the technology of the present invention drastically increases the adjustable of regenerative resource (wind energy, solar energy) generation schedule
Property, electric energy conveying capacity, low voltage ride-through capability, add reliability, improve the quality of power supply, save
Substantial amounts of raw material (stalloy, copper conductor), reduce holistic cost.Particularly when being applied to Oversea wind
Time on power generation project, owing to have employed high frequency transformer in DC/DC current transformer and carrying out boosting, isolation technology,
Significantly reduce the volume and weight of booster transformer, therefore can also greatly save blower fan offshore platform
(basic) and the construction cost of wind energy turbine set primary substation sea level platform.
Accompanying drawing explanation
Fig. 1 is the electrical block diagram of the present invention.
Fig. 2 a and Fig. 2 b is the circuit structure diagram of " regenerative resource integrated power generation unit " in Fig. 1.
Fig. 3 a and Fig. 3 b is that in Fig. 2 a and Fig. 2 b, " modular high-power electromagnetic isolation type DC/DC unsteady flow is boosted
Device " electrical block diagram.
Fig. 4 a is the circuit diagram of one of " electromagnetic isolation type DC/DC current transformer " embodiment in Fig. 3 a and Fig. 3 b.
Fig. 4 b is the circuit diagram of the two of " electromagnetic isolation type DC/DC current transformer " embodiment in Fig. 3 a and Fig. 3 b.
Fig. 4 c is the circuit diagram of the three of " electromagnetic isolation type DC/DC current transformer " embodiment in Fig. 3 a and Fig. 3 b.
Fig. 4 d is the circuit diagram of the four of " electromagnetic isolation type DC/DC current transformer " embodiment in Fig. 3 a and Fig. 3 b.
Fig. 4 e is the circuit diagram of the five of " electromagnetic isolation type DC/DC current transformer " embodiment in Fig. 3 a and Fig. 3 b.
Fig. 4 f is the circuit diagram of the six of " electromagnetic isolation type DC/DC current transformer " embodiment in Fig. 3 a and Fig. 3 b.
Detailed description of the invention
Below in conjunction with Figure of description, the invention will be further described, but the invention is not limited in following reality
Execute example.
As it is shown in figure 1, renewable energy power generation of the present invention, power transmission and transformation and electrical network access integral system,
Including several regenerative resource integrated power generation unit 1, at least one HVDC transmission lines 2, at least
One high-power inverter 3 and generating field computer supervisory control system 4.Each regenerative resource integrated power generation
The outfan of unit is HVDC, and is all connected in parallel on same high voltage dc bus HVDC；Described
One end of HVDC transmission line is also connected with same high voltage dc bus HVDC, high-voltage dc transmission electric wire
The other end on road is connected to the direct-flow input end of described high-power inverter, described high-power inverter
Ac output end is connected to exchange bulk power grid.The function of high-power inverter be unidirectional current is converted to alternating current after
Deliver to exchange bulk power grid, current source inverter can be used, it would however also be possible to employ at DC terminal series diode only
The voltage source inverter of inverse valve；The function of diode check (non-return) valve is when short trouble occurs in DC power transmission line
Prevent exchanging bulk power grid and inject fault current to DC side.
Described generating field computer supervisory control system generating field computer supervisory control system 4(routine monitoring system), with
Dispatching of power netwoks control centre connects, and monitors the state of each equipment in generating field in real time, accepts in dispatching of power netwoks control
The traffic order of the heart, issue generating setting value to described regenerative resource integrated power generation unit.Described can
The electricity that renewable sources of energy integrated power generation unit issues is through described HVDC transmission line and high-power inverse
Become device to be transported to exchange bulk power grid.
Fig. 2 a and Fig. 2 b is the circuit structure diagram of the regenerative resource integrated power generation unit in Fig. 1, and this can be again
Raw energy integrated power generation unit includes: one or more renewable energy power generation devices, a big merit of modularity
Rate electromagnetic isolation type DC/DC unsteady flow increasing apparatus, an energy storage device and a cell controller.Renewable
The outfan of energy source electric generating device is connected on low-voltage direct bus LVDC；Energy storage device output is also connected to same
Article one, on low-voltage direct bus LVDC；Modular high-power electromagnetic isolation type DC/DC unsteady flow increasing apparatus low
Pressure side is also connected on same low-voltage direct bus LVDC, and modular high-power electromagnetic isolation type DC/DC becomes
The high-pressure side of stream increasing apparatus is connected on the high voltage bus HVDC of generating field.
Described renewable energy power generation device is the combination of a kind of or at least two in following form:
1) described renewable energy power generation device is one or more photovoltaic battery arrays (Fig. 2 b)；
2) described renewable energy power generation device is one or more with three-phase or heterogeneous based on IGBT module
The asynchronous wind driven generator (Fig. 2 a) of PWM active rectification circuit:
3) described renewable energy power generation device is one or more permanent magnet direct-driven wind-force with rectification circuit
Electromotor；
4) described renewable energy power generation device is one or more synchro wind generators with rectification circuit.
The rectification circuit of described permanent magnet direct-drive wind-force generating machine can be conventional diode rectifier circuit；Also may be used
Being that conventional diode rectifier circuit is plus Boost circuit；The diode rectifier circuit that can also be conventional adds
Upper pfc circuit；Can also be three-phase based on IGBT module or heterogeneous PWM active rectification circuit (the most equal
For conventional rectification circuit, do not describe in detail).
The rectification circuit of described synchro wind generator can be conventional diode rectifier circuit；Can also be normal
The diode rectifier circuit of rule is plus Boost circuit；Can also be that conventional diode rectifier circuit is plus PFC
Circuit；Can also be three-phase based on IGBT module or heterogeneous PWM active rectification circuit (is routine above
Rectification circuit, does not describes in detail).
The outfan of described photovoltaic battery array is all received on low-voltage direct bus LVDC.Asynchronous wind driven generator
The ac output end of (or permanent magnet direct-drive wind-force generating machine, or synchro wind generator) is corresponding
The ac input end of rectification circuit connects, rectification circuit DC output end be connected to low-voltage direct bus LVDC
On.
Described energy storage device in Fig. 2 a and Fig. 2 b, including the two-way DC/DC unsteady flow of a non-electromagnetic isolation type
Device (outward available from), super capacitor system (outward available from)；Or described energy storage device include one non-
The two-way DC/DC current transformer of electromagnetic isolation type, battery system (outward available from).Non-electromagnetic isolation type
One end of two-way DC/DC current transformer and low-voltage direct bus LVDC connect, the other end and battery system or
Super capacitor system connects.
The two-way DC/DC current transformer of above-mentioned non-electromagnetic isolation type, including a reactor L, a capacitor
C, two IGBT or MOSFET modules T1, T2；Two diodes D1, D2 are constituted.Wherein IGBT or MOSFET
Module T1, diode D2, reactor L, capacitor C constitute a typical BUCK circuit, during work by
Low-voltage direct bus LVDC charges to battery system (or super capacitor system)；IGBT or MOSFET module
T2, diode D1, reactor L, capacitor C constitute a typical BOOST circuit, accumulator during work
System (or super capacitor system) is discharged to low-voltage direct bus LVDC.
Described cell controller (buyable acquisition) in Fig. 2 a and Fig. 2 b, including a microprocessor unit
And a connected signal acquisition circuit, a communication module.Signal acquisition circuit is renewable with described
Energy source electric generating device, modular high-power electromagnetic isolation type DC/DC unsteady flow increasing apparatus, energy storage device connect,
Gather the analog-and digital-variable in regenerative resource integrated power generation unit；Communication module and generating field computer
Monitoring system connects, and is responsible for and the function of generating field computer monitoring system communication；Microprocessor unit is based on adopting
After the generating setting value that signal that sample obtains, generating field computer supervisory control system issue carries out calculating process, output
Modular high-power electromagnetic isolation type DC/DC unsteady flow increasing apparatus, energy storage device are controlled by control signal.
Maximal power tracing (MPPT) function of photovoltaic power generation apparatus also realizes in this controller.
As shown in Figure 3 a and Figure 3 b shows, described modular high-power electromagnetic isolation type DC/DC unsteady flow increasing apparatus by
Multiple identical electromagnetic isolation type DC/DC current transformers form, and major function is that low dc voltage is raised to height
DC voltage, and high pressure and low-voltage direct-current system are carried out electromagnetic isolation.All electromagnetic isolation type DC/DC unsteady flows
The input parallel connection of device is followed by the low-voltage direct bus LVDC in regenerative resource integrated power generation unit；All
The outfan of electromagnetic isolation type DC/DC current transformer has a following two structure: 1) all electromagnetic isolation types DC/DC
Current transformer series connection is followed by high voltage dc bus HVDC (Fig. 3 a)；2) all electromagnetic isolation types DC/DC become
The outfan parallel connection of stream device is followed by high voltage dc bus HVDC (Fig. 3 b).
Described electromagnetic isolation type DC/DC current transformer has an embodiment in following 6:
Embodiment one: as shown in fig. 4 a, described electromagnetic isolation type DC/DC current transformer include one by IGBT or
Low-pressure side full-bridge inverter that MOSFET is constituted and DC capacitor thereof, one be made up of inductance Lr and electric capacity Cr
LC series resonant circuit, the high frequency transformer of secondary coil more than and multiple high-pressure sides rectification circuit.Described
High-pressure side rectification circuit is made up of a diode full bridge rectifier and DC side output filter circuit thereof, and this is defeated
Going out filter circuit can be a capacitor, it is also possible to be a LC filter circuit.Described inductance Lr is permissible
Make single inductance element, it is also possible to be the leakage inductance of described high frequency transformer；Low-pressure side full-bridge inverter straight
Stream end is connected in parallel on low-voltage direct bus LVDC as the input of described electromagnetic isolation type DC/DC current transformer,
Low-pressure side full-bridge inverter exchange end connect with LC series resonant circuit after and the primary coil of high frequency transformer
Connect.The secondary coil of the input (exchange end) of high-pressure side rectification circuit high frequency transformer corresponding thereto
Connect.As described electromagnetic isolation type after outfan (DC terminal) cascade of multiple high-pressure sides rectification circuit
The outfan of DC/DC current transformer.
Embodiment two: as shown in Figure 4 b, described electromagnetic isolation type DC/DC current transformer include one by IGBT or
Low-pressure side full-bridge inverter and DC capacitor thereof that MOSFET is constituted, one by inductance Lr and inductance Lm and electricity
Hold LLC resonance circuit, the high frequency transformer of secondary coil more than and the rectification of multiple high-pressure sides of Cr composition
Circuit.Described high-pressure side rectification circuit is by a diode full bridge rectifier and DC side output filter circuit thereof
Constituting, this output filter circuit can be a capacitor, it is also possible to be a LC filter circuit.Described
Inductance Lr can be single inductance element, it is also possible to be the leakage inductance of described high frequency transformer, described in another
Inductance Lm can be single inductance element, it is also possible to be the magnetizing inductance of described high frequency transformer.Low
The DC terminal of pressure side full-bridge inverter is connected in parallel on low as the input of described electromagnetic isolation type DC/DC current transformer
On pressure dc bus LVDC, the inductance Lr in exchange end and the LLC resonance circuit of low-pressure side full-bridge inverter with
And electric capacity Cr series connection after and high frequency transformer primary coil connect, the inductance Lm in LLC resonance circuit and height
The parallel connection of primary windings of frequency power transformer.The input (exchange end) of high-pressure side rectification circuit height corresponding thereto
The secondary coil of frequency power transformer connects, conduct after outfan (DC terminal) cascade of multiple high-pressure sides rectification circuit
The outfan of described electromagnetic isolation type DC/DC current transformer.
Embodiment three: as illustrated in fig. 4 c, described electromagnetic isolation type DC/DC current transformer include one by IGBT or
Low-pressure side full-bridge inverter and DC capacitor thereof that MOSFET is constituted, one by inductance Lr and electric capacity Cp and electricity
Hold LCC resonance circuit, the high frequency transformer of secondary coil more than and the rectification of multiple high-pressure sides of Cr composition
Circuit.Described high-pressure side rectification circuit is by a diode full bridge rectifier and DC side output filter circuit thereof
Constituting, this output filter circuit can be a capacitor, it is also possible to be a LC filter circuit.Described
Inductance Lr can be single inductance element, it is also possible to be the leakage inductance of described high frequency transformer.Low-pressure side is complete
The DC terminal of bridge inverter is connected in parallel on low-voltage direct as the input of described electromagnetic isolation type DC/DC current transformer
On bus LVDC, exchange end and the inductance Lr in LCC resonance circuit and the electric capacity of low-pressure side full-bridge inverter
After Cr series connection, the primary coil with high frequency transformer connects, the electric capacity Cp in LCC resonance circuit and high frequency transformation
The parallel connection of primary windings of device.The input (exchange end) of high-pressure side rectification circuit high frequency transformation corresponding thereto
The secondary coil of device connects, as described after outfan (DC terminal) cascade of multiple high-pressure sides rectification circuit
The outfan of electromagnetic isolation type DC/DC current transformer.
Embodiment four: as shown in figure 4d, described electromagnetic isolation type DC/DC current transformer include one by IGBT or
Low-pressure side full-bridge inverter that MOSFET is constituted and DC capacitor thereof, one be made up of inductance Lr and electric capacity Cr
LC series resonant circuit, the high frequency transformer of secondary coil more than and multiple high-pressure sides voltage doubling rectifing circuit.
Described inductance Lr can be single inductance element, it is also possible to be the leakage inductance of described high frequency transformer.Low
The DC terminal of pressure side full-bridge inverter is connected in parallel on low as the input of described electromagnetic isolation type DC/DC current transformer
Pressure dc bus LVDC on, after the exchange end of low-pressure side full-bridge inverter is connected with LC series resonant circuit and height
The primary coil of frequency power transformer connects.The input of high-pressure side voltage doubling rectifing circuit high frequency transformation corresponding thereto
The secondary coil of device connects.As institute after outfan (DC terminal) cascade of multiple high-pressure sides voltage doubling rectifing circuit
The outfan of the electromagnetic isolation type DC/DC current transformer stated.
Embodiment five: as shown in fig 4e, described electromagnetic isolation type DC/DC current transformer include one by IGBT or
Low-pressure side full-bridge inverter and DC capacitor thereof that MOSFET is constituted, one by inductance Lr and inductance Lm and electricity
Hold LLC resonance circuit, the high frequency transformer of secondary coil more than and multiple high-pressure sides multiplication of voltage of Cr composition
Rectification circuit.The DC terminal of low-pressure side full-bridge inverter is defeated as described electromagnetic isolation type DC/DC current transformer
Enter end to be connected in parallel on low-voltage direct bus LVDC, the exchange end of low-pressure side full-bridge inverter and LLC resonance circuit
In inductance Lr and electric capacity Cr series connection after and high frequency transformer primary coil connect, in LLC resonance circuit
Inductance Lm and the parallel connection of primary windings of high frequency transformer.Described inductance Lr can be single inductance element,
Can also be the leakage inductance of described high frequency transformer, another described inductance Lm can be single inductance element,
It can also be the magnetizing inductance of described high frequency transformer.The input (exchange end) of high-pressure side voltage doubling rectifing circuit
The secondary coil of high frequency transformer corresponding thereto connects.The outfan of multiple high-pressure sides voltage doubling rectifing circuit
As the outfan of described electromagnetic isolation type DC/DC current transformer after (DC terminal) cascade.
Embodiment six: as shown in fig. 4f, described electromagnetic isolation type DC/DC current transformer include one by IGBT or
Low-pressure side full-bridge inverter and DC capacitor thereof that MOSFET is constituted, one by inductance Lr and electric capacity Cp and electricity
Hold LCC resonance circuit, the high frequency transformer of secondary coil more than and multiple high-pressure sides multiplication of voltage of Cr composition
Rectification circuit.Described inductance Lr can be single inductance element, it is also possible to be described high frequency transformer
Leakage inductance.The DC terminal of low-pressure side full-bridge inverter is as the input of described electromagnetic isolation type DC/DC current transformer
End is connected in parallel on low-voltage direct bus LVDC, in the exchange end of low-pressure side full-bridge inverter and LLC resonance circuit
Inductance Lr and electric capacity Cr series connection after and high frequency transformer primary coil connect, in LLC resonance circuit
Electric capacity Cp and the parallel connection of primary windings of high frequency transformer.The input (exchange end) of high-pressure side voltage doubling rectifing circuit
The secondary coil of high frequency transformer corresponding thereto connects.The outfan of multiple high-pressure sides voltage doubling rectifing circuit
As the outfan of described electromagnetic isolation type DC/DC current transformer after (DC terminal) cascade.
In the present invention, all of electronic component and the equal buyable of electronic equipment obtain.
Claims (1)
1. renewable energy power generation, power transmission and transformation and electrical network access integral system, including several renewable energies
Resource integrated generator unit (1), at least one HVDC transmission line (2), at least one is high-power inverse
Become device (3) and generating field computer supervisory control system (4)；It is characterized in that: each described regenerative resource
The outfan of integrated power generation unit (1) is connected on high voltage dc bus (HVDC), D.C. high voltage transmission
One end of circuit (2) is also connected on high voltage dc bus (HVDC), HVDC transmission line (2)
The other end be connected to the direct-flow input end of high-power inverter (3), the exchange of high-power inverter (3)
Outfan is connected to exchange bulk power grid；Generating field computer supervisory control system (4) and dispatching of power netwoks control centre (5)
Connect and accept the traffic order of dispatching of power netwoks control centre, generating field computer supervisory control system (4) also with can
Renewable sources of energy integrated power generation unit (1) connect and issue to regenerative resource integrated power generation unit (1)
Generating setting value；
Described regenerative resource integrated power generation unit includes a renewable energy power generation device, a module
Change great-power electromagnetic isolated form DC/DC unsteady flow increasing apparatus, an energy storage device and a cell controller；
The outfan of renewable energy power generation device is connected on low-voltage direct bus (LVDC), and energy storage device exports
End is also connected on same low-voltage direct bus (LVDC), modular high-power electromagnetic isolation type DC/DC
The low-pressure side of unsteady flow increasing apparatus is also connected on same low-voltage direct bus (LVDC), and high-pressure side connects
On the high voltage dc bus (HVDC) of generating field, cell controller and renewable energy power generation device, mould
Massing great-power electromagnetic isolated form DC/DC unsteady flow increasing apparatus, energy storage device connect；
Described renewable energy power generation device be at least one photovoltaic battery array, at least one with based on
The three-phase of IGBT module or the asynchronous wind driven generator of heterogeneous active PWM rectification circuit, at least one is with whole
In the permanent magnet direct-drive wind-force generating machine of current circuit, at least one synchro wind generator with rectification circuit
At least one；
The outfan of photovoltaic battery array is all received on low-voltage direct bus (LVDC)；
Three-phase that the ac output end of asynchronous wind driven generator is corresponding with asynchronous wind driven generator or heterogeneous active
The ac input end of PWM rectification circuit connects, and the DC output end of three-phase or heterogeneous active PWM rectification circuit is even
Receive on low-voltage direct bus (LVDC)；
The rectification that the ac input end of permanent magnet direct-drive wind-force generating machine is corresponding with permanent magnet direct-drive wind-force generating machine
The ac input end of circuit connects, and the DC output end of this rectification circuit is connected to low-voltage direct bus (LVDC)
On；
The exchange of the rectification circuit that the ac output end of synchro wind generator is corresponding with synchro wind generator is defeated
Entering end to connect, the DC output end of this rectification circuit is connected on low-voltage direct bus (LVDC)；
The rectification circuit of described permanent magnet direct-drive wind-force generating machine or the rectification circuit of synchro wind generator be with
One of lower form:
1) described rectification circuit is diode rectifier circuit；
2) described rectification circuit is that diode rectifier circuit adds Boost circuit；
3) described rectification circuit is that diode rectifier circuit adds pfc circuit；
4) described rectification circuit is three-phase based on IGBT module or heterogeneous active PWM rectification circuit；
Described cell controller includes microprocessor unit and connected signal acquisition circuit, communication mould
Block；Signal acquisition circuit and described renewable energy power generation device, modular high-power electromagnetic isolation type DC/DC
Unsteady flow increasing apparatus, energy storage device connect to gather analog-and digital-variable, communication module and described generating field
Computer supervisory control system connects；
Described energy storage device includes the two-way DC/DC current transformer of a non-electromagnetic isolation type and a super electricity
Appearance system, or the two-way DC/DC current transformer of a non-electromagnetic isolation type and a battery system；Non-
One end of the two-way DC/DC current transformer of electromagnetic isolation type and low-voltage direct bus (LVDC) connect, the other end
Connect with battery system or super capacitor system；
The two-way DC/DC current transformer of described non-electromagnetic isolation type includes a reactor (L), a capacitor
(C), two IGBT or MOSFET modules (T1, T2), two diodes (D1, D2)；Wherein,
Number IGBT or MOSFET module (T1), No. two diodes (D2), reactor (L), capacitors
(C) a BUCK circuit is constituted；
No. two IGBT or MOSFET modules (T2), diode (D1), reactor (L), capacitors
(C) a BOOST circuit is constituted；
Described modular high-power electromagnetic isolation type DC/DC unsteady flow increasing apparatus includes multiple identical electromagnetism
Isolated form DC/DC current transformer, the input parallel connection of all electromagnetic isolation type DC/DC current transformers is followed by can be again
On low-voltage direct bus (LVDC) in raw energy integrated power generation unit, all electromagnetic isolation types DC/DC
The outfan of current transformer is in series or in parallel to be followed by high voltage dc bus (HVDC)；
The structure of described electromagnetic isolation type DC/DC current transformer is one of following form:
1) described electromagnetic isolation type DC/DC current transformer includes a low-pressure side being made up of IGBT or MOSFET
Full-bridge inverter and DC capacitor thereof, one be made up of the first inductance (Lr) and the first electric capacity (Cr)
LC series resonant circuit, the high frequency transformer of secondary coil more than and multiple high-pressure sides rectification circuit；
Described high-pressure side rectification circuit is straight by a diode full bridge rectifier and diode full bridge rectifier
The output filter circuit of stream side is constituted, and this output filter circuit is a capacitor or a LC filter circuit；
The DC terminal of described low-pressure side full-bridge inverter is defeated as described electromagnetic isolation type DC/DC current transformer
Entering end to be connected in parallel on low-voltage direct bus (LVDC), the exchange end of low-pressure side full-bridge inverter is connected humorous with LC
Shake after circuit connected in series and the primary coil of high frequency transformer connects；
The secondary coil of the ac input end of each high-pressure side rectification circuit high frequency transformer corresponding thereto is even
Connect, become as described electromagnetic isolation type DC/DC after the DC output end cascade of all high-pressure sides rectification circuit
The outfan of stream device；
2) described electromagnetic isolation type DC/DC current transformer includes a low-pressure side being made up of IGBT or MOSFET
Full-bridge inverter and DC capacitor thereof, one by the second inductance (Lr) and the 3rd inductance (Lm) and second
LLC resonance circuit, the high frequency transformer of secondary coil more than and the multiple high pressure that electric capacity (Cr) forms
Side rectification circuit；
Described high-pressure side rectification circuit is by a diode full bridge rectifier and DC side output filter circuit thereof
Constituting, this output filter circuit is a capacitor or a LC filter circuit；
The DC terminal of described low-pressure side full-bridge inverter is defeated as described electromagnetic isolation type DC/DC current transformer
Enter end to be connected in parallel on low-voltage direct bus (LVDC), the exchange end of low-pressure side full-bridge inverter and LLC resonance
After the second inductance (Lr) in circuit and the second electric capacity (Cr) series connection and the primary coil of high frequency transformer
Connect, the 3rd inductance (Lm) and the parallel connection of primary windings of high frequency transformer in LLC resonance circuit；
The secondary coil of the ac input end of described high-pressure side rectification circuit high frequency transformer corresponding thereto is even
Connect, become as described electromagnetic isolation type DC/DC after the DC output end cascade of all high-pressure sides rectification circuit
The outfan of stream device；
3) described electromagnetic isolation type DC/DC current transformer includes a low-pressure side being made up of IGBT or MOSFET
Full-bridge inverter and DC capacitor thereof, one by the 4th inductance (Lr) and the 3rd electric capacity (Cp) and the 4th
LCC resonance circuit, the high frequency transformer of secondary coil more than and the multiple high pressure that electric capacity (Cr) forms
Side rectification circuit；
Described high-pressure side rectification circuit is by a diode full bridge rectifier and DC side output filter circuit thereof
Constituting, this output filter circuit is a capacitor or a LC filter circuit；
The DC terminal of described low-pressure side full-bridge inverter is defeated as described electromagnetic isolation type DC/DC current transformer
Enter end to be connected in parallel on low-voltage direct bus (LVDC), the exchange end of low-pressure side full-bridge inverter and LCC resonance
After the 4th inductance (Lr) in circuit and the series connection of the 4th electric capacity (Cr) and the primary coil of high frequency transformer
Connect, the 3rd electric capacity (Cp) and the parallel connection of primary windings of high frequency transformer in LCC resonance circuit；
The secondary coil of the ac input end of described high-pressure side rectification circuit high frequency transformer corresponding thereto is even
Connect, become as described electromagnetic isolation type DC/DC after the DC output end cascade of all high-pressure sides rectification circuit
The outfan of stream device；
4) described electromagnetic isolation type DC/DC current transformer includes a low-pressure side being made up of IGBT or MOSFET
Full-bridge inverter and DC capacitor, a LC being made up of the 5th inductance (Lr) and the 5th electric capacity (Cr)
Series resonant circuit, the high frequency transformer of secondary coil more than and multiple high-pressure sides voltage doubling rectifing circuit；
The DC terminal of described low-pressure side full-bridge inverter is defeated as described electromagnetic isolation type DC/DC current transformer
Entering end to be connected in parallel on low-voltage direct bus (LVDC), the exchange end of low-pressure side full-bridge inverter is connected humorous with LC
Shake after circuit connected in series and the primary coil of high frequency transformer connects；
The secondary coil of the input of described high-pressure side voltage doubling rectifing circuit high frequency transformer corresponding thereto is even
Connect, as described electromagnetic isolation type DC/DC after the DC output end cascade of all high-pressure sides voltage doubling rectifing circuit
The outfan of current transformer；
5) described electromagnetic isolation type DC/DC current transformer includes a low-pressure side being made up of IGBT or MOSFET
Full-bridge inverter and DC capacitor thereof, one by the 6th inductance (Lr) and the 7th inductance (Lm) and the 6th
LLC resonance circuit, the high frequency transformer of secondary coil more than and the multiple high pressure that electric capacity (Cr) forms
Side voltage doubling rectifing circuit；
The DC terminal of described low-pressure side full-bridge inverter is defeated as described electromagnetic isolation type DC/DC current transformer
Enter end to be connected in parallel on low-voltage direct bus (LVDC), the exchange end of low-pressure side full-bridge inverter and LLC resonance
After the 6th inductance (Lr) in circuit and the series connection of the 6th electric capacity (Cr) and the primary coil of high frequency transformer
Connect, the 7th inductance (Lm) and the parallel connection of primary windings of high frequency transformer in LLC resonance circuit；
The secondary coil of the input of described high-pressure side voltage doubling rectifing circuit high frequency transformer corresponding thereto is even
Connect, as described electromagnetic isolation type DC/DC after the DC output end cascade of all high-pressure sides voltage doubling rectifing circuit
The outfan of current transformer；
6) described electromagnetic isolation type DC/DC current transformer includes a low-pressure side being made up of IGBT or MOSFET
Full-bridge inverter and DC capacitor thereof, one by the 8th inductance (Lr) and the 7th electric capacity (Cp) and the 8th
LCC resonance circuit, the high frequency transformer of secondary coil more than and the multiple high pressure that electric capacity (Cr) forms
Side voltage doubling rectifing circuit；
The DC terminal of described low-pressure side full-bridge inverter is defeated as described electromagnetic isolation type DC/DC current transformer
Enter end to be connected in parallel on low-voltage direct bus (LVDC), the exchange end of low-pressure side full-bridge inverter and LCC resonance
After the 8th inductance (Lr) in circuit and the series connection of the 8th electric capacity (Cr) and the primary coil of high frequency transformer
Connect, the 7th electric capacity (Cp) and the parallel connection of primary windings of high frequency transformer in LCC resonance circuit；
The secondary coil of the input of described high-pressure side voltage doubling rectifing circuit high frequency transformer corresponding thereto is even
Connect, as described electromagnetic isolation type DC/DC after the DC output end cascade of all high-pressure sides voltage doubling rectifing circuit
The outfan of current transformer；
Described high-power inverter is current source inverter, or is at DC terminal series diode check (non-return) valve
Voltage source inverter；
Described first, second, the four, the five, the six, the 8th inductance (Lr) are single inductance element,
Or the leakage inductance of described high frequency transformer；Described three, the 7th inductance (Lm) are single inductance unit
Part, or the magnetizing inductance of described high frequency transformer.
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| CN104135157B (en) * | 2014-07-07 | 2017-03-29 | 中国电子科技集团公司第四十一研究所 | A kind of high voltage power supply power conversion circuit |
| AU2015289111B2 (en) * | 2014-07-17 | 2019-01-24 | Abb Schweiz Ag | Power converter system for renewable energy sources |
| CN104242433A (en) * | 2014-09-22 | 2014-12-24 | 安徽启光能源科技研究院有限公司 | Energy management system for mixed energy source power station |
| CN104269843B (en) * | 2014-10-29 | 2017-12-19 | 珠海格力电器股份有限公司 | PV air-conditioner power supply circuit and PV air-conditioner |
| CN104600749B (en) * | 2015-02-06 | 2016-09-14 | 中国科学院广州能源研究所 | A kind of hierarchical synchronization control method being applicable to micro-capacitance sensor |
| CN106160022A (en) * | 2015-03-31 | 2016-11-23 | 积能环保电机工程科技有限公司 | Direct current multivoltage electrical power trans mission/distribution system |
| US10411473B2 (en) * | 2017-01-05 | 2019-09-10 | General Electric Company | Power converter for energy systems |
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| CN108561278B (en) * | 2018-04-09 | 2020-01-21 | 北京中清智辉能源科技有限公司 | Wind-powered electricity generation field computer monitored control system |
| CN108832890B (en) * | 2018-07-30 | 2024-04-26 | 浙江人和光伏科技有限公司 | Photovoltaic module junction box capable of being rapidly turned off |
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| CN113258801B (en) * | 2020-02-12 | 2022-11-29 | 新疆金风科技股份有限公司 | Direct current gets electric installation, system and wind generating set's start control system |
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