CN106872818A - The grid-connected Performance Test System and method of a kind of smooth storing cogeneration device - Google Patents
The grid-connected Performance Test System and method of a kind of smooth storing cogeneration device Download PDFInfo
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- CN106872818A CN106872818A CN201611246291.8A CN201611246291A CN106872818A CN 106872818 A CN106872818 A CN 106872818A CN 201611246291 A CN201611246291 A CN 201611246291A CN 106872818 A CN106872818 A CN 106872818A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/003—Environmental or reliability tests
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B10/00—Integration of renewable energy sources in buildings
- Y02B10/10—Photovoltaic [PV]
Abstract
The present invention relates to the grid-connected Performance Test System and method of a kind of smooth storing cogeneration device, the system includes：Test host computer, data acquisition module, simulating grid, power network, grid-connected measurement cabinet, Unidirectional direct-current source, bidirectional, dc source, RLC are loaded and by light-metering storing cogeneration device, simulating grid, detection means, analog DC source in system are integrated into an entirety by grid-connected measurement cabinet, the detection of DC side parallel light storage integrated device, AC shunting means and light storing cogeneration system can be applied to, the detection efficiency of light storing cogeneration device to test is improve.
Description
Technical field
The present invention relates to power network simulation test field, and in particular to a kind of grid-connected performance test of smooth storing cogeneration device
System and method.
Background technology
Domestic many inverter manufacturers have been proposed photovoltaic, energy storage mixing converter plant, and such device contains photovoltaic
Electricity generation module, energy storage charge-discharge modules and simultaneously off-network handover module, meet distributed or micro-grid system and are connected simultaneously with bulk power grid
The basic demand of switching.However, from the point of view of practical application effect, because grid-connected independent mixing inverter technology not yet ten is divided into
Ripe, and off-network switching time is long, the quality of power supply is poor under job insecurity and off-network under grid-connected conditions the problems such as, protrudes relatively,
Threaten user security electricity consumption and power grid operation；In addition, photovoltaic energy storage coordination control strategy is not sought unity of standard still, different factories
Family is different according to the Optimal Control Strategy that itself purpose is proposed, the economy of different device, reliability difference are larger.Therefore
It is necessary to set up the light grid-connected performance detecting platform of storing cogeneration device, for carrying out the grid-connected performance of light storage integrated apparatus, work(
Rate control performance etc. is tested.
At present there are AC parallel connection, wherein two kinds of principal modes of DC side parallel, light in the integrated apparatus of light storage both at home and abroad
Volt component DC output side voltage range is generally 0~1000V, and energy-storage battery DC side output voltage range is generally 0~
500V.Photovoltaic generation and energy-storage system are operated in MPPT modes and PQ/Vf controls respectively, and itself is adjusted according to different operating conditions
Control strategy, typical operating condition includes：1) photovoltaic powers to the load under grid-connected conditions, and energy-storage battery is operated in charging or floating charge
Under power mode；2) photovoltaic, energy-storage battery are combined and are powered to the load under grid-connected conditions；3) under the conditions of off-network, photovoltaic, energy-storage battery connection
Conjunction powers to the load；4) under the conditions of off-network, energy-storage battery independently powers to the load.
The content of the invention
The present invention provides the control method and control device of a kind of household electrical appliance, being capable of comprehensive simulated light the purpose is to set up
The electric test environment of storing cogeneration device DC side, AC, so as to carry out the grid-connected performance of light storing cogeneration device, work(
Rate control performance is tested.
The purpose of the present invention is realized using following technical proposals：
A kind of grid-connected Performance Test System of smooth storing cogeneration device, it is theed improvement is that, including：
Test host computer, data acquisition module, simulating grid, power network, grid-connected measurement cabinet, Unidirectional direct-current source, bidirectional, dc
Source, RLC are loaded and by light-metering storing cogeneration device；
The test host computer, for controlling the simulating grid, Unidirectional direct-current source, double by arrange parameter control signal
To the output characteristics that DC source and RLC are loaded；
The data acquisition module, the Wave data for gathering the grid-connected measurement cabinet, and the waveform number that will be collected
According to reaching the test host computer；
The simulating grid, for analog AC power network；
The power network, for providing electric energy for the simulating grid；
The grid-connected measurement cabinet, for simulating grid and institute described in the switching systems that are controlled by dry contact signal
State by between light-metering storing cogeneration device and off-network pattern, and gathered by sensor and the voltage x current number during off-network
According to；
The Unidirectional direct-current source, for the photovoltaic I-V characteristic parameter of curve simulated light sent according to the test host computer
The electric output characteristics of photovoltaic array；
The bidirectional, dc source, for the energy-storage battery I-V characteristic parameter of curve mould sent according to the test host computer
Intend the electric output characteristics of energy-storage battery；
The RLC loads, the load curve of output for being sent according to the test host computer simulates load output characteristics.
The system as claimed in claim 1, it is characterised in that the simulating grid is the power electronics of analog AC power network
Device, the electricity of actual electric network is simulated by controlling the alternating voltage output parameter of power electronic equipment of the analog AC power network
Net frequency step, consecutive variations, temporarily voltage magnitude change, temporarily liter, drop failure, Voltage unbalance and voltage harmonic failure.
Preferably, the test host computer is negative to the simulating grid, Unidirectional direct-current source, bidirectional, dc source and RLC respectively
Carry and send electrical network parameter signal, photovoltaic module curve of output, battery charging and discharging curve and load curve of output.
Preferably, the grid-connected measurement cabinet includes：First three-phase terminal block 1, the second three-phase terminal block 2, the 3rd three phase terminals
The 3, first bus bronze medal 4 of son row, the second bus bronze medal 5, first interface 6, second interface 7, the 3rd interface 8, the 4th interface 9, adopt
Sample resistance 10, Sensor Measurement Unit 11, sensor power unit 12, gate-controlled switch 13, sensor output row 14, electric current
Sensor 15, current sensor 16, current sensor 17, current sensor 18, current sensor 19, voltage sensor 20, electricity
Pressure sensor 21, voltage sensor 22 and voltage sensor 23；
Outside the grid-connected measurement cabinet, the first three-phase terminal block 1 is connected with RLC loads, the second three-phase terminal block 2 or the
Three three-phase terminal blocks 3 are connected with by the AC of light-metering storing cogeneration device, and first interface 6 is filled with by light-metering storing cogeneration
The energy storage interface connection of the DC side put, second interface 7 connects with by the photovoltaic interface of the DC side of light-metering storing cogeneration device
Connect, the 3rd interface 8 is connected with Unidirectional direct-current source, the 4th interface 9 is connected with bidirectional, dc source, gate-controlled switch 13 connects with simulating grid
Connect；
Inside the grid-connected measurement cabinet, the first three-phase terminal block 1 for being sequentially connected in series and current sensor 15 and described the
One bus bronze medal 4 is in parallel, and the gate-controlled switch 13 and voltage sensor 20 being sequentially connected in series are in parallel with the first bus bronze medal 4, institute
State voltage sensor 21 in parallel and the first bus bronze medal 4 and the second bus bronze medal 5 between, the second three-phase terminal block being sequentially connected in series
2 and current sensor 16 it is in parallel with the second bus bronze medal 5, the 3rd three-phase terminal block 3 and current sensor 17 that are sequentially connected in series with
Second bus bronze medal 5 is in parallel, and first interface 6, voltage sensor 22, the interface 9 of current sensor 19 and the 4th are sequentially connected in series, and first
Interface 6 is also directly connected to the 4th interface 9 by wire, second interface 7, voltage sensor 23, current sensor 18 and the 3rd
Interface 8 is sequentially connected in series, and second interface 7 is also directly connected to the 3rd interface 8 by wire；
The sensor output row 14, for obtaining current sensor 15, current sensor 16, current sensor
17th, current sensor 18, current sensor 19, voltage sensor 20, voltage sensor 21, voltage sensor 22 and voltage sensor
The sampled data of device 23；
The Sensor Measurement Unit 11 includes sampling resistor 10, for obtaining electric current by sensor output row 14
The sampled data of sensor 15, current sensor 16, current sensor 17, current sensor 18 and current sensor 19；
Sampling data transmitting is delivered to data acquisition by the sensor output row 14 and Sensor Measurement Unit 11 respectively
Module.
Preferably, the Unidirectional direct-current source is made up of 5 10kW power models, by wire and bronze medal to 5 10kW work(
Rate module carries out series-parallel operation, the voltage class and capacity of the output of control Unidirectional direct-current source；The bidirectional, dc source is by 6
32kW power models are constituted, and 6 32kW power models are carried out with series-parallel operation, control bidirectional, dc source by wire and bronze medal
The voltage class and capacity of output.
Preferably, the data acquisition module is oscillograph.
The control method of the grid-connected Performance Test System of light storing cogeneration device, it is theed improvement is that, methods described
Including：
By testing host computer, electrical network parameter signal, photovoltaic module curve of output, battery charging and discharging curve and load are set
Curve of output；
Electrical network parameter signal is sent to simulating grid, according to simulation actual electric network output characteristics；
Photovoltaic module curve of output is sent to Unidirectional direct-current source, it is defeated according to the photovoltaic module that the test host computer sends
Go out the electric output characteristics of curve simulation photovoltaic array；
Battery charging and discharging curve is sent to bidirectional, dc source, it is bent according to the battery charging and discharging that the test host computer sends
Line simulates the electric output characteristics of energy-storage battery；
Load curve of output is sent to RLC loads, according to the load curve of output simulation that the test host computer sends
Load output characteristics；
Obtained by the Current Voltage of light-metering storing cogeneration device and simulating grid and off-network process by grid-connected measurement cabinet
Data, and the current and voltage data is sent to test host computer；
Test case and the current and voltage data according to being stored in the test host computer are combined to being stored up by light-metering
TRT is tested.
Beneficial effects of the present invention：
The technical scheme that the present invention is provided, by the grid-connected cabinet that measures in system by simulating grid, detection means, mould in system
Intend DC source be integrated into an entirety, establish can comprehensive simulated light storing cogeneration device DC side, AC it is electric
Test environment, and using the current and voltage data during grid-connected measurement cabinet accurate detection and off-network, so as to realize light storage joint
The Automated condtrol of the tests such as the grid-connected performance of TRT, power control performance, can be to research and analyse wind-solar-storage joint generating
The economy of system, reliability index provide important evidence.
Brief description of the drawings
Fig. 1 is a kind of grid-connected Performance Test System structural representation of smooth storing cogeneration device of the present invention；
Fig. 2 is the structural representation of grid-connected measurement cabinet in a kind of grid-connected performance test system of smooth storing cogeneration device of the present invention
Figure；
Fig. 3 is Unidirectional direct-current source structure signal in a kind of grid-connected performance test system of smooth storing cogeneration device of the present invention
Figure；
Fig. 4 is bidirectional, dc source structure signal in a kind of grid-connected performance test system of smooth storing cogeneration device of the present invention
Figure；
Fig. 5 is grid entry point voltage change trend schematic diagram in the embodiment of the present invention；
Fig. 6 is active power of output changing trend diagram in the embodiment of the present invention；
Fig. 7 is grid entry point voltage change tendency chart in the embodiment of the present invention；
Fig. 8 is active power of output variation tendency schematic diagram in the embodiment of the present invention.
Wherein, 1：First three-phase terminal block, 2：Second three-phase terminal block, 3：3rd three-phase terminal block, 4：First bus copper
Board, 5：Second bus bronze medal, 6：First interface, 7：Second interface, 8：3rd interface, 9：4th interface, 10：Sampling resistor, 11：
Sensor Measurement Unit, 12：Sensor power unit, 13：Gate-controlled switch, 14：Sensor output row, 15：Current sense
Device, 16：Current sensor, 17：Current sensor, 18：Current sensor, 19：Current sensor, 20：Voltage sensor, 21：
Voltage sensor, 22：Voltage sensor, 23：Voltage sensor.
Specific embodiment
Specific embodiment of the invention is elaborated below in conjunction with the accompanying drawings.
To make the purpose, technical scheme and advantage of the embodiment of the present invention clearer, below in conjunction with the embodiment of the present invention
In accompanying drawing, the technical scheme in the embodiment of the present invention is clearly and completely described, it is clear that described embodiment is
A part of embodiment of the present invention, rather than whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art
The all other embodiment obtained under the premise of creative work is not made, belongs to the scope of protection of the invention.
The grid-connected Performance Test System of a kind of smooth storing cogeneration device that the present invention is provided, as shown in figure 1, including：
Test host computer, data acquisition module, simulating grid, power network, grid-connected measurement cabinet, Unidirectional direct-current source, bidirectional, dc
Source, RLC are loaded and by light-metering storing cogeneration device；
The test host computer, for controlling the simulating grid, Unidirectional direct-current source, double by arrange parameter control signal
To the output characteristics that DC source and RLC are loaded；
Wherein, the test host computer is loaded to the simulating grid, Unidirectional direct-current source, bidirectional, dc source and RLC respectively
Send electrical network parameter signal, photovoltaic module curve of output, battery charging and discharging curve and load curve of output.
The data acquisition module, the Wave data for gathering the grid-connected measurement cabinet, and the waveform number that will be collected
According to reaching the test host computer；
Wherein, the data acquisition module can be oscillograph；
The simulating grid, for analog AC power network；
The power network, for providing electric energy for the simulating grid；
The grid-connected measurement cabinet, for simulating grid and institute described in the switching systems that are controlled by dry contact signal
State by between light-metering storing cogeneration device and off-network pattern, and gathered by sensor and the voltage x current number during off-network
According to；
The Unidirectional direct-current source, for the photovoltaic I-V characteristic parameter of curve simulated light sent according to the test host computer
The electric output characteristics of photovoltaic array；
The bidirectional, dc source, for the energy-storage battery I-V characteristic parameter of curve mould sent according to the test host computer
Intend the electric output characteristics of energy-storage battery；
The RLC loads, the load curve of output for being sent according to the test host computer simulates load output characteristics.
Further, in the embodiment of the present invention, the simulating grid is the power electronic equipment of analog AC power network, is passed through
Control the mains frequency rank of the alternating voltage output parameter simulation actual electric network of the power electronic equipment of the analog AC power network
Jump, consecutive variations, temporarily voltage magnitude change, temporarily liter, drop failure, Voltage unbalance and voltage harmonic failure.
In simulation process, the power electronic equipment of the analog AC power network of suitable output performance is can be chosen with, for example：
Installed capacity is not less than 500kW, and output voltage range is 5-300V (phase voltage), optional 180V, 240V and 300V
Three output voltage gears.Output current scope is as follows：
When 180V voltage gears are selected in output, phase current regulation scope：0~1350A.(in below phase voltage 132V outputs
Electric current can reach 2700A, and device enters constant power area after output voltage is raised, and output current declines)
When 240V voltage gears are selected in output, phase current regulation scope：0~1000A.(in below phase voltage 176V outputs
Electric current can reach 2000A, and device enters constant power area after voltage is raised, and output current declines)
When 300V voltage gears are selected in output, phase current regulation scope：0~1250A.(in below phase voltage 220V outputs
Electric current can reach 1500A, and device enters constant power area after voltage is raised, and output current declines)
Three-phase phase angular displacement during device normal work：<± 1.5 °, in extreme imbalance (such as a certain phase inactivity of load
During output) phase angular displacement can reach 3 °；Three-phase voltage during device normal work allows degree of unbalancedness：1% is no more than when long,
2% is no more than in short-term；Voltage stability factor：0.05%；Load regulation：0.5V；Frequency stability factor：(each gear is specified for 0.005Hz
Voltage).
Voltage-regulation parameter
Output voltage adjustable range：Continuously adjustabe in the range of 5~300V (phase voltage), voltage minimal adjustment step-length 0.1V.
Voltage can it is single-phase/two-phase regulation, it is single-phase/two-phase voltage adjust when, other phase voltage amplitudes change should be less than it is specified
The 1% of value.
Voltage regulation accuracy：0.5V；Voltage change speed：It is not less than 10V/ms.
Frequency regulation parameter
Frequency-tuning range is 45~65Hz；Frequency degree of regulation is more than 0.005Hz；Frequency regulation minimum step is not less than
0.01Hz；Frequency regulations speed is not less than 10Hz/ power frequency periods.
Power network background harmonicses analog parameter
Voltage harmonic and voltage m-Acetyl chlorophosphonazo (51Hz to 1250Hz) of equivalent frequency range that device is exportable 2 to 25 times, can be same
When export 10 kinds of harmonic waves and m-Acetyl chlorophosphonazo of different frequency.
The total THD of voltage and single harmonic component voltage containing ratio adjustable range：Total harmonic is reachable up to 10%, odd harmonic
8%th, up to 4%, harmonic content regulation minimum step is 0.1% to even-order harmonic, and harmonic wave precision is 0.5%.It is humorous between each time
Wave voltage containing ratio adjustable range：0~2%, m-Acetyl chlorophosphonazo total content adjustable range 0-10%, regulation minimum step are 0.1%,
Harmonic wave degree of regulation is 0.5%.
Specifically, as shown in Fig. 2 the grid-connected measurement cabinet includes：First three-phase terminal block 1, the second three-phase terminal block 2,
3rd three-phase terminal block 3, the first bus bronze medal 4, the second bus bronze medal 5, first interface 6, second interface 7, the 3rd interface 8,
Four interfaces 9, sampling resistor 10, Sensor Measurement Unit 11, sensor power unit 12, gate-controlled switch 13, sensor output
Son row 14, current sensor 15, current sensor 16, current sensor 17, current sensor 18, current sensor 19, voltage
Sensor 20, voltage sensor 21, voltage sensor 22 and voltage sensor 23；
Outside the grid-connected measurement cabinet, the first three-phase terminal block 1 is connected with RLC loads, the second three-phase terminal block 2 or the
Three three-phase terminal blocks 3 are connected with by the AC of light-metering storing cogeneration device, and first interface 6 is filled with by light-metering storing cogeneration
The energy storage interface connection of the DC side put, second interface 7 connects with by the photovoltaic interface of the DC side of light-metering storing cogeneration device
Connect, the 3rd interface 8 is connected with Unidirectional direct-current source, the 4th interface 9 is connected with bidirectional, dc source, gate-controlled switch 13 connects with simulating grid
Connect；
Inside the grid-connected measurement cabinet, the first three-phase terminal block 1 for being sequentially connected in series and current sensor 15 and described the
One bus bronze medal 4 is in parallel, and the gate-controlled switch 13 and voltage sensor 20 being sequentially connected in series are in parallel with the first bus bronze medal 4, institute
State voltage sensor 21 in parallel and the first bus bronze medal 4 and the second bus bronze medal 5 between, the second three-phase terminal block being sequentially connected in series
2 and current sensor 16 it is in parallel with the second bus bronze medal 5, the 3rd three-phase terminal block 3 and current sensor 17 that are sequentially connected in series with
Second bus bronze medal 5 is in parallel, and first interface 6, voltage sensor 22, the interface 9 of current sensor 19 and the 4th are sequentially connected in series, and first
Interface 6 is also directly connected to the 4th interface 9 by wire, second interface 7, voltage sensor 23, current sensor 18 and the 3rd
Interface 8 is sequentially connected in series, and second interface 7 is also directly connected to the 3rd interface 8 by wire；
The sensor output row 14, for obtaining current sensor 15, current sensor 16, current sensor
17th, current sensor 18, current sensor 19, voltage sensor 20, voltage sensor 21, voltage sensor 22 and voltage sensor
The sampled data of device 23；
The Sensor Measurement Unit 11 includes sampling resistor 10, for obtaining electric current by sensor output row 14
The sampled data of sensor 15, current sensor 16, current sensor 17, current sensor 18 and current sensor 19；
Sampling data transmitting is delivered to data acquisition by the sensor output row 14 and Sensor Measurement Unit 11 respectively
Module.
The Unidirectional direct-current source, as shown in figure 3, be made up of 5 10kW power models, by wire and bronze medal to 5
10kW power models carry out series-parallel operation, the voltage class and capacity of the output of control Unidirectional direct-current source；The bidirectional, dc source,
As shown in figure 4, being made up of 6 32kW power models, connection in series-parallel behaviour is carried out to 6 32kW power models by wire and bronze medal
Make, the voltage class and capacity of the output of control bidirectional, dc source.
Wherein, Unidirectional direct-current source uses modular construction, individual module output voltage range be 0~1000V, electric current 0~
10A, peak power output is 10kW, can simulate the type solar cells I-V characteristic curve such as polysilicon, film.Unidirectional direct-current
Source is integrally made up of 5 10kW power models, and maximum output is 50kW.Direct current source module communication use principal and subordinate's form, module it
Between communicate and connected in sequence using Ethernet, finally communicated with host computer by wherein 1.According to tested device demand,
Host computer sets each direct current source module output characteristic curve, the positive and negative two ends of direct current source module direct current output respectively with bus bronze medal
Connection, while bus bronze medal can be realized carrying out short circuit between any bronze medal by copper cable.It is unidirectional to 5 straight by preposition bronze medal
Stream source module DC output end carries out series-parallel operation, simulates the photovoltaic array output of different voltage class and capacity.In Fig. 3,
0~100V of direct current source module output voltage range, 0~10A of current range.By after bronze medal connection in series-parallel, DC source overall output
Voltage range is 0~1000V, 0~50A of current range.
Bidirectional, dc source uses modular construction, and individual module output voltage range is 0~500V, 0~80A of electric current, can
The type energy-storage battery discharge and recharge I-V characteristic curves such as simulation plumbic acid, lithium battery.Bidirectional, dc source is overall by 6 32kW power machines
Module is constituted.Direct current source module communication use principal and subordinate's form, communicated between module and connected in sequence using Ethernet, finally by
Wherein 1 is communicated with host computer.According to tested device demand, it is bent that host computer sets each direct current source module output characteristics
Line, the positive and negative two ends of direct current source module direct current output are connected with bus bronze medal respectively, while bus bronze medal can be realized by copper cable
Short circuit is carried out between any bronze medal.Series-parallel operation is carried out to 6 bidirectional, dc source module DC output ends by preposition bronze medal,
Simulate the energy-storage battery characteristic of different voltage class and capacity.0~500V of direct current source module output voltage range, electric current in Fig. 4
0~80A of scope.By after bronze medal connection in series-parallel, DC source overall output 0~1000V of voltage range, 0~240A of current range.
Present invention also offers a kind of control method of the grid-connected Performance Test System of smooth storing cogeneration device, the side
Method includes：
By testing host computer, electrical network parameter signal, photovoltaic module curve of output, battery charging and discharging curve and load are set
Curve of output；
Electrical network parameter signal is sent to simulating grid, according to simulation actual electric network output characteristics；
Photovoltaic module curve of output is sent to Unidirectional direct-current source, it is defeated according to the photovoltaic module that the test host computer sends
Go out the electric output characteristics of curve simulation photovoltaic array；
Battery charging and discharging curve is sent to bidirectional, dc source, it is bent according to the battery charging and discharging that the test host computer sends
Line simulates the electric output characteristics of energy-storage battery；
Load curve of output is sent to RLC loads, according to the load curve of output simulation that the test host computer sends
Load output characteristics；
Obtained by the Current Voltage of light-metering storing cogeneration device and simulating grid and off-network process by grid-connected measurement cabinet
Data, and the current and voltage data is sent to test host computer；
Test case and the current and voltage data according to being stored in the test host computer are combined to being stored up by light-metering
TRT is tested.
The present invention also provides a kind of specific reality of the control method of the grid-connected Performance Test System of smooth storing cogeneration device
Apply process, for example, photovoltaic generating module rated capacity be 20kW, by three road MPPT circuits to group string carry out maximum power point with
Track.It is as shown in table 1 that critical technical parameter is set：
The photovoltaic generating module critical technical parameter of table 1
It is 50kW that energy storage becomes flow module rated capacity, operates in PQ operational modes, and critical technical parameter table is as shown in table 2：
The energy storage of table 2 becomes flow module critical technical parameter
Case test event is tested for grid adaptability, and test purpose is checking light storage integrated generating device in power network electricity
Pressure is separately operable when in different scopes range of the fluctuation of voltage, the continual and steady service ability of device.Light storage integrated apparatus in case
Photovoltaic powers to the load under operating in grid-connected conditions, and energy-storage battery is operated in charging operating mode.
After device stable operation, light storage electricity generation module power output 19kW, energy storage charge power 6kW, generate electricity by way of merging two or more grid systems power
About 13kW.During test, when voltage fluctuates in normal range (NR), photovoltaic and energy storage device keep normal operation.Grid entry point
Voltage change trend is as shown in figure 5, active power of output variation tendency is as shown in Figure 6；
After device stable operation, light storage electricity generation module power output 20kW, energy storage charge power 5kW, generate electricity by way of merging two or more grid systems power
About 15kW.When being fluctuated in the range of electric voltage over press, photovoltaic and energy storage device keep normal operation.Grid entry point voltage change trend
As shown in fig. 7, active power of output variation tendency is as shown in Figure 8.
Finally it should be noted that：The above embodiments are merely illustrative of the technical solutions of the present invention rather than its limitations, to the greatest extent
Pipe has been described in detail with reference to above-described embodiment to the present invention, and those of ordinary skill in the art should be understood：Still
Specific embodiment of the invention can be modified or equivalent, and without departing from any of spirit and scope of the invention
Modification or equivalent, it all should cover within claims of the invention.
Claims (7)
1. a kind of grid-connected Performance Test System of smooth storing cogeneration device, it is characterised in that the system includes：Test is upper
Machine, data acquisition module, simulating grid, power network, grid-connected measurement cabinet, Unidirectional direct-current source, bidirectional, dc source, RLC are loaded and tested
Light storing cogeneration device；
The test host computer, for controlling the simulating grid, Unidirectional direct-current source, two-way straight by arrange parameter control signal
Stream source and the output characteristics of RLC loads；
The data acquisition module, the Wave data for gathering the grid-connected measurement cabinet, and the Wave data that will be collected are passed
To the test host computer；
The simulating grid, for analog AC power network；
The power network, for providing electric energy for the simulating grid；
The grid-connected measurement cabinet, for simulating grid and the quilt described in the switching systems that are controlled by dry contact signal
Between light-metering storing cogeneration device and off-network pattern, and gathered by sensor and the voltage x current data during off-network；
The Unidirectional direct-current source, for the photovoltaic I-V characteristic parameter of curve simulation photovoltaic battle array sent according to the test host computer
Arrange electric output characteristics；
The bidirectional, dc source, the energy-storage battery I-V characteristic parameter of curve for being sent according to the test host computer simulates storage
Can cell electrical output characteristics；
The RLC loads, the load curve of output for being sent according to the test host computer simulates load output characteristics.
2. the system as claimed in claim 1, it is characterised in that the simulating grid is filled for the power electronics of analog AC power network
Put, the power network of actual electric network is simulated by controlling the alternating voltage output parameter of power electronic equipment of the analog AC power network
Frequency step, consecutive variations, temporarily voltage magnitude change, temporarily liter, drop failure, Voltage unbalance and voltage harmonic failure.
3. the system as claimed in claim 1, it is characterised in that the test host computer is respectively to the simulating grid, unidirectional
DC source, bidirectional, dc source and RLC load send electrical network parameter signal, photovoltaic module curve of output, battery charging and discharging curve and
Load curve of output.
4. the system as claimed in claim 1, it is characterised in that the grid-connected measurement cabinet includes：First three-phase terminal block (1),
Second three-phase terminal block (2), the 3rd three-phase terminal block (3), the first bus bronze medal (4), the second bus bronze medal (5), first interface
(6), second interface (7), the 3rd interface (8), the 4th interface (9), sampling resistor (10), Sensor Measurement Unit (11), sensing
Device power supply unit (12), gate-controlled switch (13), sensor output row (14), current sensor (15), current sensor
(16), current sensor (17), current sensor (18), current sensor (19), voltage sensor (20), voltage sensor
(21), voltage sensor (22) and voltage sensor (23)；
Outside the grid-connected measurement cabinet, the first three-phase terminal block (1) and RLC are loaded and are connected, the second three-phase terminal block (2) or the
Three three-phase terminal blocks (3) are connected with by the AC of light-metering storing cogeneration device, and first interface (6) combines hair with by light-metering storage
The energy storage interface connection of the DC side of electric installation, second interface (7) and the photovoltaic by the DC side of light-metering storing cogeneration device
Interface is connected, and the 3rd interface (8) is connected with Unidirectional direct-current source, and the 4th interface (9) is connected with bidirectional, dc source, gate-controlled switch (13)
It is connected with simulating grid；
Inside the grid-connected measurement cabinet, the first three-phase terminal block (1) for being sequentially connected in series and current sensor (15) and described the
The parallel connection of one bus bronze medal (4), the gate-controlled switch (13) and voltage sensor (20) that are sequentially connected in series and the first bus bronze medal (4)
Parallel connection, the voltage sensor (21) is in parallel and the first bus bronze medal (4) and the second bus bronze medal (5) between, is sequentially connected in series
Second three-phase terminal block (2) and current sensor (16) are in parallel with the second bus bronze medal (5), the 3rd three-phase terminal being sequentially connected in series
Row (3) and current sensor (17) are in parallel with the second bus bronze medal (5), and first interface (6), voltage sensor (22), electric current are passed
Sensor (19) and the 4th interface (9) are sequentially connected in series, and first interface (6) is also directly connected to the 4th interface (9) by wire, and second
Interface (7), voltage sensor (23), current sensor (18) and the 3rd interface (8) are sequentially connected in series, second interface (7) and the 3rd
Interface (8) is also directly connected to by wire；
Sensor output row (14), for obtaining current sensor (15), current sensor (16), current sensor
(17), current sensor (18), current sensor (19), voltage sensor (20), voltage sensor (21), voltage sensor
(22) and voltage sensor (23) sampled data；
The Sensor Measurement Unit (11) includes sampling resistor (10), for obtaining electricity by sensor output row (14)
Flow sensor (15), current sensor (16), current sensor (17), current sensor (18) and current sensor (19) are adopted
Sample data；
Sampling data transmitting is delivered to data acquisition by sensor output row (14) and Sensor Measurement Unit (11) respectively
Module.
5. the system as claimed in claim 1, it is characterised in that the Unidirectional direct-current source is made up of 5 10kW power models, leads to
Crossing wire and bronze medal carries out series-parallel operation, the voltage class and appearance of the output of control Unidirectional direct-current source to 5 10kW power models
Amount；The bidirectional, dc source is made up of 6 32kW power models, and 6 32kW power models are gone here and there by wire and bronze medal
Parallel operation, the voltage class and capacity of the output of control bidirectional, dc source.
6. the system as claimed in claim 1, it is characterised in that the data acquisition module is oscillograph.
7. the controlling party of the grid-connected Performance Test System of a kind of light storing cogeneration device as described in claim any one of 1-6
Method, it is characterised in that methods described includes：
By testing host computer, the output of electrical network parameter signal, photovoltaic module curve of output, battery charging and discharging curve and load is set
Curve；
Electrical network parameter signal is sent to simulating grid, according to simulation actual electric network output characteristics；
Photovoltaic module curve of output is sent to Unidirectional direct-current source, exports bent according to the photovoltaic module that the test host computer sends
Line simulates the electric output characteristics of photovoltaic array；
Battery charging and discharging curve is sent to bidirectional, dc source, according to the battery charging and discharging curvilinear mold that the test host computer sends
Intend the electric output characteristics of energy-storage battery；
Load curve of output is sent to RLC loads, load is simulated according to the load curve of output that the test host computer sends
Output characteristics；
Obtained by the current and voltage data of light-metering storing cogeneration device and simulating grid and off-network process by grid-connected measurement cabinet,
And send to test host computer the current and voltage data；
According to the test case and the current and voltage data being stored in the test host computer to by light-metering storing cogeneration
Device is tested.
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