CN208986604U - One kind is provided multiple forms of energy to complement each other alternating current-direct current mixing micro-capacitance sensor - Google Patents
One kind is provided multiple forms of energy to complement each other alternating current-direct current mixing micro-capacitance sensor Download PDFInfo
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Abstract
It provides multiple forms of energy to complement each other alternating current-direct current mixing micro-capacitance sensor the utility model relates to one kind, exchange micro-capacitance sensor bus and direct-current grid bus are electrically connected by exchanging common bus, constitute two-stage Distributing network structure, to exchange in level-one Distributing network structure of the common bus as hinge, grid-connected switch conduction and cutting are controlled by central controller and energy accumulation current converter, realizes the grid-connected and off-grid operation for alternating current-direct current mixing micro-capacitance sensor of providing multiple forms of energy to complement each other；Direct-current grid bus passes sequentially through the first energy accumulation current converter and the first alternating current combination switch is connected electrically on exchange common bus, exchange micro-capacitance sensor bus is connected electrically on exchange common bus by the second alternating current combination switch, the first alternating current combination switch or/and the second alternating current combination switch is connected by central controller, realize exchange micro-capacitance sensor and direct-current grid paired running or independent operating, it realizes exchange micro-capacitance sensor and direct-current grid mutual backup, improves compatibility, ductility, flexibility and the reliability of alternating current-direct current mixing micro-capacitance sensor of providing multiple forms of energy to complement each other.
Description
Technical field
The utility model relates to alternating current-direct current micro-capacitance sensor technical field more particularly to one kind alternating current-direct currents of providing multiple forms of energy to complement each other to mix micro- electricity
Net.
Background technique
With the development of electric power network technique, power supply and load show diversity, integrate the alternating current-direct current of multiple power sources and load
Mixing micro-capacitance sensor gradually shows that advantage, alternating current-direct current mixing micro-capacitance sensor have the advantages of AC and DC power grid.It is mixed in alternating current-direct current load
It closes in micro-capacitance sensor, AC microgrids bus and direct-current micro-grid bus contact pass through AC microgrids bus contact AC power source and exchange
Load, by direct-current micro-grid bus contact DC power supply and DC load, reduces Technics of Power Electronic Conversion link, can reduce energy
Consumption and inhibition harmonic wave.
As shown in Figure 1, a kind of typical alternating current-direct current mixing micro-capacitance sensor includes: direct-current grid, exchange micro-capacitance sensor and coordination
Controller, direct-current grid include direct-current micro-grid bus, the first energy accumulation current converter and are connected electrically in by the first energy accumulation current converter
The first energy storage device on direct-current micro-grid bus, exchange micro-capacitance sensor include AC microgrids bus, the second energy accumulation current converter and pass through
Second energy accumulation current converter is connected electrically in the second energy storage device on AC microgrids bus；Direct-current micro-grid bus passes through tuning controller
It is electrically connected AC microgrids bus, is cut by the operating mode of the first energy accumulation current converter, the second energy accumulation current converter and tuning controller
It changes, realizes direct-current grid and the grid-connected or off-grid operation that exchanges micro-capacitance sensor.
However, direct-current micro-grid must pass through since AC microgrids bus is used as AC microgrids bus and grid-connected bus simultaneously
AC microgrids bus realize simultaneously, off-network switching, in AC microgrids bus off-network or failure, direct-current micro-grid force isolated island fortune
Row causes alternating current-direct current mixing operation of power networks to lack reliability and flexibility.
Utility model content
Technical problem to be solved in the utility model is in view of the above shortcomings of the prior art, to provide one kind and provide multiple forms of energy to complement each other
Alternating current-direct current mixing micro-capacitance sensor.
The technical solution that the utility model solves above-mentioned technical problem is as follows: one kind alternating current-direct current of providing multiple forms of energy to complement each other mixes micro- electricity
Net, including direct-current grid, exchange micro-capacitance sensor, bus connection switch, the first energy accumulation current converter, AC circuit breaker, backup power supply,
Exchange common bus and central controller；
The direct-current grid includes direct-current grid bus, at least four direct current connection switches, the first DC/DC unsteady flow
Device, the 2nd DC/DC current transformer, the first photovoltaic power generation equipment, the first energy storage device, the first wind-driven generator and DC load；
First photovoltaic power generation equipment passes sequentially through the first DC/DC current transformer and the first direct current connection switch is electrically connected
It connects on the direct-current grid bus, first energy storage device passes sequentially through the 2nd DC/DC current transformer and second directly
Stream connection switch is connected electrically on the direct-current grid bus, and first wind-driven generator passes through third direct current connection switch
It is connected electrically on the direct-current grid bus, the DC load is connected electrically in the direct current by the 4th direct current connection switch
On micro-capacitance sensor bus；
The exchange micro-capacitance sensor includes: exchange micro-capacitance sensor bus, at least four exchange connection switches, the first DC/AC unsteady flow
Device, the 2nd DC/AC current transformer, the second energy accumulation current converter, the second photovoltaic power generation equipment, the second energy storage device, the second wind-power electricity generation
Machine and AC load；
Second photovoltaic power generation equipment passes sequentially through the first DC/AC current transformer and the first exchange connection switch is electrically connected
It connects on the exchange micro-capacitance sensor bus, second energy storage device passes sequentially through second energy accumulation current converter and the second exchange
Connection switch is connected electrically on the exchange micro-capacitance sensor bus, and second wind-driven generator passes sequentially through the 2nd DC/AC
Current transformer exchanges connection switch with third and is connected electrically on the exchange micro-capacitance sensor bus, and the AC load passes through the 4th exchange
Connection switch is connected electrically on the exchange micro-capacitance sensor bus；
The bus connection switch includes: grid-connected switch, the first alternating current combination switch and the second alternating current combination switch；
The direct-current grid bus passes sequentially through first energy accumulation current converter and first alternating current combination switch electricity
It is connected on the exchange common bus, the exchange micro-capacitance sensor bus is connected electrically in institute by second alternating current combination switch
It states on exchange common bus, the backup power supply is connected electrically on the exchange common bus by the AC circuit breaker, institute
It states exchange common bus and is electrically connected the grid-connected switch；
First energy accumulation current converter, second energy accumulation current converter, the grid-connected switch, the first exchange group are run jointly
Pass, second alternating current combination switch, the backup power supply, the 4th direct current connection switch and the described 4th exchange connection and open
Close and the central controller be electrically connected by hardwire respectively, it is described it is grid-connected switch, first alternating current combination switch and described
Second alternating current combination switch passes through hardwire respectively and is electrically connected first energy accumulation current converter and second energy accumulation current converter；
The first DC/DC current transformer, the 2nd DC/DC current transformer, first wind-driven generator, described first
DC/AC current transformer, the 2nd DC/AC current transformer, second energy accumulation current converter are respectively by described in communication cable electrical connection
Central controller.
The beneficial effects of the utility model are: to exchange common bus, exchange micro-capacitance sensor bus and direct-current grid bus
Two-stage Distributing network structure is constituted, exchange common bus accesses city bulk power grid by grid-connected switch, simultaneously by central controller controls
The on or off of switch is netted, the grid-connected or off-grid operation for alternating current-direct current mixing micro-capacitance sensor of providing multiple forms of energy to complement each other is realized, it is mutual to improve multipotency
Mend alternating current-direct current mixing micro-capacitance sensor reliability of operation and flexibility.
To exchange in level-one Distributing network structure of the common bus as hinge, when the first exchange of central controller controls group is run jointly
When pass and the second alternating current combination switch are both turned on, be connected by exchange common bus common by exchange micro-capacitance sensor and direct-current grid
The second level Distributing network structure of composition realizes exchange micro-capacitance sensor and direct-current grid paired running；When central controller controls first are handed over
When flowing stacked switch or the cutting of the second alternating current combination switch, micro-capacitance sensor and direct-current grid independent operating are exchanged, realizes the two mutually
Be it is spare, improve provide multiple forms of energy to complement each other alternating current-direct current mixing micro-capacitance sensor operation ductility and compatibility.
First energy storage converter and the second energy storage converter can be to grid-connected switches, the first alternating current combination switch and second
Alternating current combination switch is independently controlled, and realizes the operation switching inside two-stage Distributing network structure.
Symmetrical a plurality of types of power supplys are configured in exchange micro-capacitance sensor and direct-current grid, are distinguished by central controller
Cut off or be connected the power supply of each type with exchange the transmission line of electricity between micro-capacitance sensor bus or direct-current grid bus, realize pair
Supply voltage on exchange micro-capacitance sensor bus or direct-current grid bus is controlled.
Further, further includes: the network switch, protocol converter and data acquisition analysis system；
The network switch connects the central controller, the protocol converter and the data by communication cable
Acquisition passes through communication cable respectively with monitoring system and connect the network switch, and the data acquisition analysis system is configured with
For storing the operator station of simultaneously display information in real time.
The beneficial effect of above-mentioned further scheme is: extending central controller by the network switch and protocol converter
Communication interaction function, central controller are used to acquire and export the operation data for alternating current-direct current mixing micro-capacitance sensor of providing multiple forms of energy to complement each other；Operation
Data are transmitted to operator station by the network switch, and operator station save to operation data information and real-time display；Rule
The signal that about converter will comply with different communication protocol is converted to the signal that can be docked with IEC61850, and signal is existed
It is transmitted between different communication specification, the communication system constituted based on central controller, the network switch and protocol converter mentions
The compatibility and expansion of alternating current-direct current micro-capacitance sensor communication of providing multiple forms of energy to complement each other are risen.
It further, further include isolating transformer, the isolating transformer is connected electrically in the friendship by the grid-connected switch
It flows on common bus.
The beneficial effect of above-mentioned further scheme is: isolating transformer is connected electrically in exchange common bus by grid-connected switch
On, electrical isolation is carried out to exchange micro-capacitance sensor and direct-current grid.
Further, the grid-connected switch includes static switch and the frame circuit breaker in parallel with the static switch, described
Static switch and the frame circuit breaker pass through hardwire respectively and are electrically connected the central controller, first energy accumulation current converter
With second energy accumulation current converter, the frame circuit breaker electrical connection electrical connection exchange common bus and the isolation
Transformer.
The beneficial effect of above-mentioned further scheme is: in parallel with static switch by frame circuit breaker, frame circuit breaker can
Using Experimental comparison as static switch and spare, the compatibility and expansion of alternating current-direct current mixing micro-capacitance sensor operation of providing multiple forms of energy to complement each other are improved
Malleability, compared to frame circuit breaker, the cut-off velocity of static switch faster, improves the switch speed of grid-connected switch.
Further, the first direct current connection switch, the second direct current connection switch connect out with the third direct current
Pass is dc circuit breaker, and the 4th direct current connection switch is direct current stacked switch；
It is to hand over that the first exchange connection switch, the second exchange connection switch, which exchange connection switch with the third,
Breaker is flowed, the 4th exchange connection switch is third alternating current combination switch；
The direct current stacked switch includes D.C. contactor and the first dc circuit breaker, and the DC load passes sequentially through institute
It states D.C. contactor and first dc circuit breaker is connected electrically on the direct-current grid bus；
First alternating current combination switch includes the first A.C. contactor and the first AC circuit breaker, and first energy storage becomes
Stream device passes sequentially through first A.C. contactor and is connected electrically in described exchange on common bus with first AC circuit breaker；
Second alternating current combination switch includes the second A.C. contactor and the second AC circuit breaker, and the AC microgrids are female
Line passes sequentially through second A.C. contactor and is connected electrically in described exchange on common bus with second AC circuit breaker；
The third alternating current combination switch includes third A.C. contactor and third AC circuit breaker, the AC load according to
It is secondary that described exchange on micro-capacitance sensor bus is connected electrically in the third AC circuit breaker by the third A.C. contactor；
The D.C. contactor, first A.C. contactor, second A.C. contactor are exchanged with the third and are connect
Tentaculum passes through hardwire respectively and is electrically connected the central controller.
The beneficial effect of above-mentioned further scheme is: by AC circuit breaker and dc circuit breaker in affiliated transmission line of electricity
Upper active cutting, carries out overload protection to transmission line of electricity, by A.C. contactor and D.C. contactor in affiliated transmission line of electricity
Upper passive cutting, carries out voltage control to transmission line of electricity, improves the reliability and spirit of alternating current-direct current mixing micro-capacitance sensor of providing multiple forms of energy to complement each other
Activity.
Further, the number of the first DC/DC current transformer is two, and first photovoltaic power generation equipment includes monocrystalline list
Face photovoltaic panel and two-sided single crystal photovoltaic plate, the monocrystalline single side photovoltaic panel is electrically connected a first DC/DC current transformer, described
Two-sided single crystal photovoltaic plate is electrically connected another the first DC/DC current transformer.
The beneficial effect of above-mentioned further scheme is: the first photovoltaic power generation equipment is configured with monocrystalline single side photovoltaic panel and monocrystalline
Two-sided photovoltaic panel, and monocrystalline single side photovoltaic panel and the two-sided photovoltaic panel of monocrystalline are electrically connected the first different DC/DC current transformers, increase
The diversity of photovoltaic panel while meeting generating function is able to ascend the comparative test of generated energy, can expand it is a variety of not
Same type photovoltaic panel (such as: polycrystalline single side photovoltaic panel, monocrystalline single side photovoltaic panel, the two-sided photovoltaic panel of monocrystalline and Bu Tong specified function
The photovoltaic panel etc. of rate), convenient for functions such as the generated outputs, hot spot effect and service life of comparative study difference photovoltaic panel.
Detailed description of the invention
Fig. 1 is a kind of structural schematic diagram of alternating current-direct current mixing micro-capacitance sensor of the prior art；
Fig. 2 is that a kind of structure for alternating current-direct current mixing micro-capacitance sensor of providing multiple forms of energy to complement each other that one embodiment of the utility model provides is shown
It is intended to；
Fig. 3 is a kind of structure for alternating current-direct current mixing micro-capacitance sensor of providing multiple forms of energy to complement each other that another embodiment of the utility model provides
Schematic diagram；
Fig. 4 is the structural schematic diagram of grid-connected switch in a kind of corresponding alternating current-direct current mixing micro-capacitance sensor of providing multiple forms of energy to complement each other of Fig. 3；
Fig. 5 is the structural schematic diagram of alternating current combination switch in a kind of corresponding alternating current-direct current mixing micro-capacitance sensor of providing multiple forms of energy to complement each other of Fig. 3.
Specific embodiment
The principles of the present invention and feature are described below in conjunction with attached drawing, example is served only for explaining that this is practical
It is novel, it is not intended to limit the scope of the utility model, and for ease of description, the label symbol of same parts keeps one
It causes.
Such as Fig. 2, one kind is provided multiple forms of energy to complement each other alternating current-direct current mixing micro-capacitance sensor, including direct-current grid, exchange micro-capacitance sensor, bus connection
Switch, the first energy accumulation current converter, AC circuit breaker, backup power supply, exchange common bus and central controller.
Direct-current grid includes direct-current grid bus, at least four direct current connection switches, the first DC/DC current transformer,
Two DC/DC current transformers, the first photovoltaic power generation equipment, the first energy storage device, the first wind-driven generator and DC load, the first photovoltaic
Generating equipment passes sequentially through the first DC/DC current transformer and the first direct current connection switch is connected electrically on direct-current grid bus, the
One energy storage device passes sequentially through the 2nd DC/DC current transformer and the second direct current connection switch is connected electrically on direct-current grid bus,
First wind-driven generator is connected electrically on direct-current grid bus by third direct current connection switch, and DC load is straight by the 4th
Stream connection switch is connected electrically on direct-current grid bus.
Wherein, four direct current connection switches are respectively the first direct current connection switch, the second direct current connection switch, third direct current
Connection switch and the 4th direct current connection switch.
Exchange micro-capacitance sensor include: exchange micro-capacitance sensor bus, at least four exchange connection switches, the first DC/AC current transformer,
2nd DC/AC current transformer, the second energy accumulation current converter, the second photovoltaic power generation equipment, the second energy storage device, the second wind-driven generator and
AC load, the second photovoltaic power generation equipment passes sequentially through the first DC/AC current transformer and the first exchange connection switch is connected electrically in friendship
It flows on micro-capacitance sensor bus, the second energy storage device passes sequentially through the second energy accumulation current converter and the second exchange connection switch is connected electrically in friendship
It flows on micro-capacitance sensor bus, the second wind-driven generator passes sequentially through the 2nd DC/AC current transformer and exchanges connection switch electrical connection with third
On exchange micro-capacitance sensor bus, AC load is connected electrically on exchange micro-capacitance sensor bus by the 4th exchange connection switch.
Wherein, four exchange connection switches are respectively the first exchange connection switch, the second exchange connection switch, third exchange
Connection switch exchanges connection switch with the 4th.
Bus connection switch includes: grid-connected switch, the first alternating current combination switch and the second alternating current combination switch.
Direct-current grid bus passes sequentially through the first energy accumulation current converter and the first alternating current combination switch is connected electrically in exchange public affairs
On common bus, exchange micro-capacitance sensor bus is connected electrically on exchange common bus by the second alternating current combination switch, and backup power supply is logical
It crosses AC circuit breaker to be connected electrically on exchange common bus, exchange common bus is electrically connected grid-connected switch.
First energy accumulation current converter, the second energy accumulation current converter, grid-connected switch, the first alternating current combination switch, the second exchange combination
Switch, backup power supply, the 4th direct current connection switch and the 4th exchange connection switch and are electrically connected center control by hardwire respectively
Device, grid-connected switch, the first alternating current combination switch and the second alternating current combination switch are electrically connected the first energy storage by hardwire respectively and become
Flow device and the second energy accumulation current converter.
First DC/DC current transformer, the 2nd DC/DC current transformer, the first wind-driven generator, the first DC/AC current transformer, second
DC/AC current transformer, the second energy accumulation current converter pass through communication cable respectively and are electrically connected central controller.
Two-stage Distributing network structure is constituted to exchange common bus, exchange micro-capacitance sensor bus and direct-current grid bus, exchange is public
Common bus accesses city bulk power grid by grid-connected switch, real by the on or off of central controller or the grid-connected switch of control
The grid-connected or off-grid operation for alternating current-direct current mixing micro-capacitance sensor of now providing multiple forms of energy to complement each other improves alternating current-direct current mixing micro-capacitance sensor operation of providing multiple forms of energy to complement each other
Reliability and flexibility.
To exchange in level-one Distributing network structure of the common bus as hinge, when the first exchange of central controller controls group is run jointly
When pass and the second alternating current combination switch are both turned on, be connected by exchange common bus common by exchange micro-capacitance sensor and direct-current grid
The second level Distributing network structure of composition realizes exchange micro-capacitance sensor and direct-current grid paired running, in exchange micro-capacitance sensor and DC micro-electric
Trend two-way flow between net；When the first alternating current combination switch of central controller controls or the second alternating current combination switch are cut off,
Micro-capacitance sensor and direct-current grid independent operating are exchanged, realizes the two mutual backup；In second level Distributing network structure, pass through AC microgrids
Bus and direct-current micro-grid bus high effective integration distributed generation resource, energy storage device and load, can be to exchange micro-capacitance sensor and direct current
Micro-capacitance sensor is transformed in lesser situation, flexible allocation electric power, greatly improves alternating current-direct current mixing micro-capacitance sensor operation of providing multiple forms of energy to complement each other
Ductility, compatibility and reliability provide for the development, transformation and comprehensive utilization of energy for alternating current-direct current mixing micro-capacitance sensor of providing multiple forms of energy to complement each other
Favourable conditions.
First energy storage converter and the second energy storage converter can be to grid-connected switches, the first alternating current combination switch and second
Being switched on and off for alternating current combination switch is independently controlled, and realizes the operation switching inside two-stage Distributing network structure.
Specifically, direct-current grid uses TN earthing mode, exchange micro-capacitance sensor uses TN-S earthing mode, direct-current grid
Bus, exchange micro-capacitance sensor bus all can be 0.4KV with the voltage for exchanging common bus；The model CSD- of central controller
580, backup power supply uses diesel-driven generator, and communication cable uses 2 × 2 × 1.0 twisted pairs；The power of diesel-driven generator can be
15KW/h, the first photovoltaic power generation equipment, the first energy storage device, the first wind-driven generator power successively can for 6.82KW/h,
15KW/h, 5KW/h, the second photovoltaic power generation equipment, the second energy storage device, the second wind-driven generator power successively can be
8.06KW/h, 25KW/h, 5KW/h, above-mentioned power can make expansion by capacity according to actual needs.
First energy storage device and the second energy storage device are identical, can carry out direct current charge-discharge using lithium battery group；Simultaneously
When net switch cutoff, the first energy storage device or/and the second energy storage device are as main power source and with the operation of VF control model；Work as SOC
When value is lower than electric discharge lower limit, central controller starts diesel-driven generator, and diesel-driven generator is VF control model.
First wind power plant is integrated with the first AC/DC current transformer and the first blower, and the second wind power plant is integrated
There are the 2nd AC/DC current transformer and the second blower, the first blower is electrically connected by the first AC/DC current transformer and third direct current connection switch
It connects, the second blower exchanges connection switch with third by the 2nd AC/DC current transformer and is electrically connected.
Preferably, as shown in figure 3, the network switch, protocol converter and data acquisition analysis system (for the ease of
Description, calling data acquisition analysis system in the following text is SCADA system), the network switch connects central controller by communication cable,
Protocol converter passes through communication cable respectively with SCADA system and connects the network switch, and SCADA system is configured at least one use
In storage and the operator station of display information in real time.
Specifically, the network switch, protocol converter and central controller are configured to IEC-61850 reference net backbone
Net, the network switch are gigabit ethernet switch and access SCADA system, and the operator station configured in SCADA system is used for
Information is monitored and is stored, is checked convenient for analysis data and real-time working condition；Protocol converter can access instrument, environment prison
Instrument etc. is surveyed, protocol converter docks ModelBus specification with IEC-61850 communication protocol.
The communication interaction function of central controller is extended by the network switch and protocol converter, central controller is used for
Acquire and export the operation data for alternating current-direct current mixing micro-capacitance sensor of providing multiple forms of energy to complement each other；Operation data is transmitted to work by the network switch
Member station, operator station save to operation data information and real-time display；Protocol converter will comply with different communication protocol
Signal is converted to the signal that can be docked with IEC61850, and signal is transmitted between different communication specification, with center control
The communication system constituted based on device processed, the network switch and protocol converter, improves alternating current-direct current micro-capacitance sensor of providing multiple forms of energy to complement each other
Compatibility and expansion.
Preferably, as shown in figure 3, further including isolating transformer, isolating transformer is connected electrically in exchange by grid-connected switch
On common bus, the capacity of isolating transformer can be 100KVA, and isolating transformer is electrically connected to exchange public affairs by grid-connected switch
Common bus, to exchange micro-capacitance sensor and direct-current grid electrical isolation.
Preferably, as shown in figure 4, grid-connected switch includes static switch and the frame circuit breaker in parallel with static switch.
Static switch and frame circuit breaker are electrically connected central controller, the first energy accumulation current converter and the by hardwire respectively
Two energy accumulation current converters, frame circuit breaker electrical connection exchange common bus and isolating transformer, the first energy accumulation current converter and the second storage
Energy current transformer may be incorporated for the on or off of control static switch or/and frame circuit breaker.
In parallel with static switch by frame circuit breaker, frame circuit breaker can be used as the Experimental comparison of static switch and standby
With, improve provide multiple forms of energy to complement each other alternating current-direct current mixing micro-capacitance sensor operation compatibility and scalability；Compared to frame circuit breaker, static state is opened
The cut-off velocity of pass faster, improves the switch speed of grid-connected switch.
Preferably, the first direct current connection switch, the second direct current connection switch and third direct current connection switch are that direct current is disconnected
Road device, the 4th direct current connection switch are direct current stacked switch, and the first exchange connection switch, the second exchange connection switch and third are handed over
Stream connection switch is AC circuit breaker, and the 4th exchange connection switch is third alternating current combination switch.
Direct current stacked switch includes D.C. contactor and the first dc circuit breaker, and DC load passes sequentially through D.C. contactor
It is connected electrically on direct-current grid bus with the first dc circuit breaker.
First alternating current combination switch includes the first A.C. contactor and the first AC circuit breaker, and the first energy accumulation current converter is successively
It is connected electrically on exchange common bus by the first A.C. contactor and the first AC circuit breaker.
Second alternating current combination switch includes the second A.C. contactor and the second AC circuit breaker, and AC microgrids bus successively leads to
It crosses the second A.C. contactor and the second AC circuit breaker is connected electrically on exchange common bus.
Third alternating current combination switch includes third A.C. contactor and third AC circuit breaker, and AC load passes sequentially through
Three A.C. contactors are connected electrically in third AC circuit breaker and exchange on micro-capacitance sensor bus.
D.C. contactor, the first A.C. contactor, the second A.C. contactor and third A.C. contactor pass through respectively to be connect firmly
Line is electrically connected central controller.
By taking third alternating current combination switch as an example, as shown in figure 5, third AC circuit breaker C1 and third A.C. contactor C2 goes here and there
Connection, third AC circuit breaker C1 are electrically connected AC microgrids bus, and third A.C. contactor C2 is electrically connected AC load.
It is actively cut off on affiliated transmission line of electricity by AC circuit breaker and dc circuit breaker, transmission line of electricity was carried out
Protection is carried, is passively cut off on affiliated transmission line of electricity by A.C. contactor and D.C. contactor, electricity is carried out to transmission line of electricity
Voltage-controlled system improves the reliability and flexibility of alternating current-direct current mixing micro-capacitance sensor of providing multiple forms of energy to complement each other.
First A.C. contactor, the second A.C. contactor and frame circuit breaker also pass through the first storage of hardwire electrical connection respectively
Energy current transformer and the second energy accumulation current converter, the first energy accumulation current converter and the second energy accumulation current converter can control the first ac contactor
The on or off of device, the second A.C. contactor and frame circuit breaker.
Preferably, the number of the first DC/DC current transformer is two, and the first photovoltaic power generation equipment includes monocrystalline single side photovoltaic panel
With two-sided single crystal photovoltaic plate, monocrystalline single side photovoltaic panel is electrically connected a first DC/DC current transformer, and two-sided single crystal photovoltaic plate is electrically connected
Connect another the first DC/DC current transformer.
First photovoltaic power generation equipment is configured with monocrystalline single side photovoltaic panel and the two-sided photovoltaic panel of monocrystalline, and monocrystalline single side photovoltaic
Plate and the two-sided photovoltaic panel of monocrystalline are electrically connected the first different DC/DC current transformers, increase the diversity of photovoltaic panel, generate electricity meeting
While function, be able to ascend the comparative test of generated energy, can expand a variety of different types of photovoltaic panels (such as: polycrystalline list
Face photovoltaic panel, monocrystalline single side photovoltaic panel, the two-sided photovoltaic panel of monocrystalline and photovoltaic panel of different rated power etc.), it is convenient for comparative study
The functions such as generated output, hot spot effect and the service life of different photovoltaic panels.
Optionally, the number of the first DC/AC current transformer is two, and the second photovoltaic power generation equipment includes monocrystalline single side photovoltaic panel
With two-sided single crystal photovoltaic plate, monocrystalline single side photovoltaic panel is electrically connected a first DC/AC current transformer, and two-sided single crystal photovoltaic plate is electrically connected
Connect another the first DC/AC current transformer.
It should be noted that in the embodiments of the present invention described above, about central controller, the first energy storage unsteady flow
Device and the second energy accumulation current converter to the control mode of grid-connected switch, the first alternating current combination switch and the second alternating current combination switch, with
And it is the prior art that central controller is all to the control of the power supplys such as diesel-driven generator, wind-driven generator, the utility model is not
It is related to the improvement of software.
The above is only the preferred embodiment of the present invention, is not intended to limit the utility model, all practical at this
Within novel spirit and principle, any modification, equivalent replacement, improvement and so on should be included in the guarantor of the utility model
Within the scope of shield.
The above is only the preferred embodiment of the present invention, is not intended to limit the utility model, all practical at this
Within novel spirit and principle, any modification, equivalent replacement, improvement and so on should be included in the guarantor of the utility model
Within the scope of shield.
Claims (6)
- The alternating current-direct current mixing micro-capacitance sensor 1. one kind is provided multiple forms of energy to complement each other, which is characterized in that including direct-current grid, exchange micro-capacitance sensor, bus Connection switch, the first energy accumulation current converter, AC circuit breaker, backup power supply, exchange common bus and central controller；The direct-current grid includes direct-current grid bus, at least four direct current connection switches, the first DC/DC current transformer, Two DC/DC current transformers, the first photovoltaic power generation equipment, the first energy storage device, the first wind-driven generator and DC load；First photovoltaic power generation equipment passes sequentially through the first DC/DC current transformer and the first direct current connection switch is connected electrically in On the direct-current grid bus, first energy storage device passes sequentially through the 2nd DC/DC current transformer and the second direct current connects It connects switch to be connected electrically on the direct-current grid bus, first wind-driven generator is electrically connected by third direct current connection switch It connects on the direct-current grid bus, the DC load is connected electrically in the DC micro-electric by the 4th direct current connection switch On net bus；The exchange micro-capacitance sensor includes: exchange micro-capacitance sensor bus, at least four exchange connection switches, the first DC/AC current transformer, the Two DC/AC current transformers, the second energy accumulation current converter, the second photovoltaic power generation equipment, the second energy storage device, the second wind-driven generator and friendship Current load；Second photovoltaic power generation equipment passes sequentially through the first DC/AC current transformer and the first exchange connection switch is connected electrically in On the exchange micro-capacitance sensor bus, second energy storage device passes sequentially through second energy accumulation current converter and the second exchange connection Switch is connected electrically on the exchange micro-capacitance sensor bus, and second wind-driven generator passes sequentially through the 2nd DC/AC unsteady flow Device exchanges connection switch with third and is connected electrically on the exchange micro-capacitance sensor bus, and the AC load passes through the 4th exchange connection Switch is connected electrically on the exchange micro-capacitance sensor bus；The bus connection switch includes: grid-connected switch, the first alternating current combination switch and the second alternating current combination switch；The direct-current grid bus passes sequentially through first energy accumulation current converter and first alternating current combination switch electrical connection On the exchange common bus, the exchange micro-capacitance sensor bus is connected electrically in the friendship by second alternating current combination switch It flows on common bus, the backup power supply is connected electrically on the exchange common bus by the AC circuit breaker, the friendship It flows common bus and is electrically connected the grid-connected switch；First energy accumulation current converter, second energy accumulation current converter, the grid-connected switch, first alternating current combination switch, Second alternating current combination switch, the backup power supply, the 4th direct current connection switch exchange connection switch with the described 4th The central controller is electrically connected by hardwire respectively, the grid-connected switch, first alternating current combination switch and described the Two alternating current combination switchs pass through hardwire respectively and are electrically connected first energy accumulation current converter and second energy accumulation current converter；The first DC/DC current transformer, the 2nd DC/DC current transformer, first wind-driven generator, the first DC/AC Current transformer, the 2nd DC/AC current transformer, second energy accumulation current converter pass through communication cable respectively and are electrically connected the center control Device processed.
- The alternating current-direct current mixing micro-capacitance sensor 2. one kind according to claim 1 is provided multiple forms of energy to complement each other, which is characterized in that further include: network Interchanger, protocol converter and data acquisition analysis system；The network switch is connected in described by communication cable Controller is entreated, the protocol converter passes through communication cable with the data acquisition analysis system respectively and connects the network friendship It changes planes, the data acquisition analysis system is configured with the operator station for storing simultaneously display information in real time.
- The alternating current-direct current mixing micro-capacitance sensor 3. one kind according to claim 1 is provided multiple forms of energy to complement each other, which is characterized in that further include that isolation becomes Depressor, the isolating transformer are connected electrically on the exchange common bus by the grid-connected switch.
- The alternating current-direct current mixing micro-capacitance sensor 4. one kind according to claim 3 is provided multiple forms of energy to complement each other, which is characterized in that the grid-connected switch Including static switch and the frame circuit breaker in parallel with the static switch, the static switch and frame circuit breaker difference The central controller, first energy accumulation current converter and second energy accumulation current converter, the frame are electrically connected by hardwire Frame circuit breaker electric connects the exchange common bus and the isolating transformer.
- The alternating current-direct current mixing micro-capacitance sensor 5. one kind according to claim 1 to 4 is provided multiple forms of energy to complement each other, which is characterized in that described One direct current connection switch, the second direct current connection switch and the third direct current connection switch are dc circuit breaker, described 4th direct current connection switch is direct current stacked switch；It is that exchange is disconnected that the first exchange connection switch, the second exchange connection switch, which exchange connection switch with the third, Road device, the 4th exchange connection switch is third alternating current combination switch；The direct current stacked switch includes D.C. contactor and the first dc circuit breaker, and the DC load passes sequentially through described straight Stream contactor and first dc circuit breaker are connected electrically on the direct-current grid bus；First alternating current combination switch includes the first A.C. contactor and the first AC circuit breaker, first energy accumulation current converter It passes sequentially through first A.C. contactor and is connected electrically in described exchange on common bus with first AC circuit breaker；Second alternating current combination switch include the second A.C. contactor and the second AC circuit breaker, the AC microgrids bus according to It is secondary that described exchange on common bus is connected electrically in second AC circuit breaker by second A.C. contactor；The third alternating current combination switch includes third A.C. contactor and third AC circuit breaker, and the AC load is successively led to It crosses the third A.C. contactor and is connected electrically in described exchange on micro-capacitance sensor bus with the third AC circuit breaker；The D.C. contactor, first A.C. contactor, second A.C. contactor and the third A.C. contactor The central controller is electrically connected by hardwire respectively.
- The alternating current-direct current mixing micro-capacitance sensor 6. one kind according to claim 1 to 4 is provided multiple forms of energy to complement each other, which is characterized in that described The number of one DC/DC current transformer is two, and first photovoltaic power generation equipment includes monocrystalline single side photovoltaic panel and two-sided monocrystalline light Plate is lied prostrate, the monocrystalline single side photovoltaic panel is electrically connected a first DC/DC current transformer, the two-sided single crystal photovoltaic plate electrical connection Another described first DC/DC current transformer.
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| CN201821489318.0U CN208986604U (en) | 2018-09-12 | 2018-09-12 | One kind is provided multiple forms of energy to complement each other alternating current-direct current mixing micro-capacitance sensor |
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| CN201821489318.0U CN208986604U (en) | 2018-09-12 | 2018-09-12 | One kind is provided multiple forms of energy to complement each other alternating current-direct current mixing micro-capacitance sensor |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3879661A1 (en) * | 2020-03-10 | 2021-09-15 | CE+T Power Luxembourg SA | Safe and resilient energy distribution system for a highly efficient microgrid |
| WO2021180638A1 (en) * | 2020-03-10 | 2021-09-16 | Ce+T Power Luxembourg Sa | Safe and resilient energy distribution system for a highly efficient microgrid |
| CN114142496A (en) * | 2021-11-05 | 2022-03-04 | 国网山东省电力公司聊城市茌平区供电公司 | Micro-grid-based power energy storage device and method |
| US11588327B2 (en) | 2020-03-10 | 2023-02-21 | Ce+T Power Luxembourg Sa | Safe and resilient energy distribution for a highly efficient microgrid |
-
2018
- 2018-09-12 CN CN201821489318.0U patent/CN208986604U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3879661A1 (en) * | 2020-03-10 | 2021-09-15 | CE+T Power Luxembourg SA | Safe and resilient energy distribution system for a highly efficient microgrid |
| WO2021180638A1 (en) * | 2020-03-10 | 2021-09-16 | Ce+T Power Luxembourg Sa | Safe and resilient energy distribution system for a highly efficient microgrid |
| US11588327B2 (en) | 2020-03-10 | 2023-02-21 | Ce+T Power Luxembourg Sa | Safe and resilient energy distribution for a highly efficient microgrid |
| CN114142496A (en) * | 2021-11-05 | 2022-03-04 | 国网山东省电力公司聊城市茌平区供电公司 | Micro-grid-based power energy storage device and method |
| CN114142496B (en) * | 2021-11-05 | 2022-10-11 | 国网山东省电力公司聊城市茌平区供电公司 | Micro-grid-based power energy storage device and method |
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