CN109245161A - Photovoltaic for base station is from grid-connected integrated inverter power supply control system and method - Google Patents
Photovoltaic for base station is from grid-connected integrated inverter power supply control system and method Download PDFInfo
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- CN109245161A CN109245161A CN201811212913.4A CN201811212913A CN109245161A CN 109245161 A CN109245161 A CN 109245161A CN 201811212913 A CN201811212913 A CN 201811212913A CN 109245161 A CN109245161 A CN 109245161A
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- 238000000034 method Methods 0.000 title claims abstract description 33
- 238000001514 detection method Methods 0.000 claims abstract description 63
- 238000011217 control strategy Methods 0.000 claims abstract description 39
- 230000005611 electricity Effects 0.000 claims description 15
- 238000004891 communication Methods 0.000 abstract description 17
- 238000012423 maintenance Methods 0.000 abstract description 12
- 230000001603 reducing effect Effects 0.000 abstract description 4
- 238000010276 construction Methods 0.000 abstract description 3
- 230000001788 irregular Effects 0.000 abstract description 3
- 238000010248 power generation Methods 0.000 abstract description 3
- 230000006641 stabilisation Effects 0.000 abstract description 3
- 238000011105 stabilization Methods 0.000 abstract description 3
- 230000000694 effects Effects 0.000 description 5
- 238000010586 diagram Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 2
- 230000007547 defect Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
Classifications
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- H02J3/383—
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- H02J3/385—
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/38—Arrangements for parallely feeding a single network by two or more generators, converters or transformers
- H02J3/388—Islanding, i.e. disconnection of local power supply from the network
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
- Y02E10/56—Power conversion systems, e.g. maximum power point trackers
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Abstract
From grid-connected integrated inverter power supply control system and method, which includes photovoltaic input unit, city's electrical connection module, from grid-connected integrated inverter, first detection module, the second detection module, controller, contactor, Switching Power Supply, DC bus, battery and DC load for a kind of photovoltaic for base station；Whether there is or not alternating currents by judging current time for controller to open shutdown contactor, realize from it is grid-connected when inverter can work normally, and be supplied to the stable input of Switching Power Supply.Compared with prior art; present invention use is from grid-connected integrated inverter; avoid frequent and irregular manual maintenance; it reducings the construction costs and the cost of manual maintenance simultaneously; using the photovoltaic for communication base station from grid-connected integrated inverter power supply control system from grid-connected switching control strategy; can guarantee from it is grid-connected when load end stabilization, the power of photovoltaic power generation can be voluntarily adjusted according to bearing power in off-network, protect load in the case where improve efficiency.
Description
Technical field
The present invention relates to photovoltaic power supply, power electronic technique and automation field, specifically, being related to photovoltaic from grid-connected one
Body inverter power supply control system and method, can be used for communication base station.
Background technique
Market Research shows, power supply system used in communication base station is mostly the alternating current that power grid provides, through over commutation and
After DC/DC transformation, power to communication module.But in the long run, such power supply mode be there are problems that.Firstly, for side
For the communication base station in remote area, alternating current is unstable to be meaned continually to power off and can not persistently supply load, and communication is caused to face
Situation off and on can not provide good Communications service；If then needing repairing secondly, the alternating current of long period powers off
Personnel carry battery or generator and repair to outlying district, restore to communicate, this greatly labor intensive cost；Again,
With being gradually increased for energy-saving and emission-reduction dynamics, the energy-saving and emission-reduction of communication base station are also increasingly taken seriously, photovoltaic power supply system energy
Enough play very important effect.Therefore the photovoltaic of communication base station becomes common solution from grid-connected power supply system.
Current communication base station photovoltaic from grid-connected power supply system, off-network and grid-connected be generally arranged respectively using two
It is standby.It when grid-connected, using gird-connected inverter, is electrically connected with city, while the supply that simultaneously Switching Power Supply is loaded；When off-network, use
Off-network inverter disconnects gird-connected inverter and alternating current, only with off-network inverter connection photovoltaic and Switching Power Supply.The confession of this mode
The more demanding equipment cost of electric system, simultaneously because the time phase difference that off-network inverter and gird-connected inverter use is more outstanding
Very, so the service life of two kinds of inverters also differs larger, the replacement cycle is different, causes the inconvenience of maintenance.
Therefore, how it to be directed to the concrete condition that alternating current is unstable in the operational process of base station, in use photovoltaic from grid-connected system
In the case where, high equipment cost caused by off-network inverter and gird-connected inverter and artificial is used in the system simultaneously
The indefinite problem of maintenance cycle reduces maintenance difficulty and save the cost, becomes the prior art and continues the technical issues of solving.
Summary of the invention
The present invention in view of the defects existing in the prior art, it is inverse from grid-connected one to propose a kind of photovoltaic for communication base station
Become device electric power supply control system and method, from communication base station save the cost and the angle of reduction maintenance difficulty, for base station
The unstable concrete condition of alternating current in operational process makes in system simultaneously using photovoltaic from grid-connected system
The indefinite problem of high equipment cost and manual maintenance's period caused by off-network inverter and gird-connected inverter, utilizes one
Kind photovoltaic is from grid-connected integrated inverter power supply control system and method, guarantee while reducing communication base station maintenance cost to reach
From it is grid-connected when load even running purpose.
The invention discloses the photovoltaics for base station from grid-connected integrated inverter power supply control system, it is characterised in that:
Including photovoltaic input unit, city's electrical connection module, from grid-connected integrated inverter, first detection module, the second detection
Module, controller, contactor, Switching Power Supply, DC bus, battery and DC load；
The photovoltaic input unit is electrically connected with described one end from grid-connected integrated inverter, described from grid-connected integrated inversion
The device other end is electrically connected with the contactor and the Switching Power Supply, and the detection of the second detection module is described from grid-connected integrated inverter
Output voltage electric current；The contactor other end is electrically connected with city's electrical connection module, and the first detection module detects alternating current
The voltage and current at end；Switching Power Supply is output to DC bus, and the DC bus is that the battery and the DC load mention
For electric energy, the controller obtain the information of first detection module and the second detection and control it is described from grid-connected integrated inverter and
The contactor, whether there is or not alternating currents by judging current time to open shutdown contactor, realize from it is grid-connected when inverter can be just
Often work, and it is supplied to the stable input of Switching Power Supply.
Optionally, when the first detection module has detected that line voltage, the electric power supply control system are grid-connected work
Mode, the controller control is described to work from grid-connected integrated inverter in current source mode, and it is same with alternating current same-phase for exporting
The alternating current of amplitude；Controller control is attracted contactor, and Switching Power Supply input is alternating current, exports as DC bus, together
When to battery and load supplying；When the first detection module detects no mains current, the electric power supply control system
For off-network operating mode, the controller, which controls, disconnects contactor, and works from grid-connected integrated inverter in voltage described in control
Source module is constant voltage constant frequency, and photovoltaic input unit is only powered to Switching Power Supply at this time.
Optionally, it works from grid-connected integrated inverter in current source mode when described, specific works are in MPPT mode.
Optionally, no matter off-network or grid-connected, the Switching Power Supply input is the friendship from grid-connected integrated inverter output
Galvanic electricity exports as direct current, while powering to battery and DC load.
Optionally, according to city's electricity condition of first detection module, that is, city's electricity condition in this period is detected, and according to the upper period
City's electricity condition of detection includes off-network switching and network control from grid-connected method for handover control to judge the control strategy to be carried out
Control strategy after system strategy, grid-connected rear control strategy, grid-connected switching off-network control strategy and off-network.
Wherein, the off-network switches Grid-connected Control Strategy, specifically includes the following steps:
When the cycle detection of this secondary control is to have an alternating current, when upper secondary control cycle detection is no alternating current, then switched using off-network
Grid-connected Control Strategy, it is grid-connect mode that controller, which is controlled from grid-connected integrated inverter work, at this time, first will be from grid-connected integrated inversion
Device output control, with amplitude same frequency, is set further according to maximum power point-tracing control method from grid-connected one to alternating current same-phase
The output current reference value of body inverter, and closed-loop control is carried out according to setting reference value, from grid-connected integrated inverter and alternating current
After same-phase is with amplitude same frequency, it is attracted contactor and alternating current is grid-connected.
The grid-connected rear control strategy, specifically includes the following steps:
When the cycle detection of this secondary control is to have alternating current, upper secondary control cycle detection is when having alternating current, then using grid-connected rear control
System strategy, it is grid-connected after control without operating contactor, need to only be set according to maximum power point-tracing control method from grid-connected one
The output current reference value of body inverter, and closed-loop control is carried out according to setting reference value.
The grid-connected switching off-network control strategy, specifically includes the following steps:
When the cycle detection of this secondary control is no alternating current, upper secondary control cycle detection is when having alternating current, then to use grid-connected switching
Off-network control strategy, controller control contactor disconnect, and control from grid-connected integrated inverter work in off-network mode, and judgement is negative
Power and photovoltaic maximum power are carried, if bearing power is greater than photovoltaic maximum power, according to maximum power point-tracing control method
The output voltage reference value of off-network inverter is set, and closed-loop control is carried out according to setting reference value；If bearing power is less than light
Maximum power is lied prostrate, then according to the output voltage reference value of bearing power setting off-network inverter, and is carried out according to setting reference value
Closed-loop control.
Control strategy after the off-network, specifically includes the following steps:
When the cycle detection of this secondary control is no alternating current, when upper secondary control cycle detection is no alternating current, then using being controlled after off-network
System strategy, controller is controlled to work from grid-connected integrated inverter, bearing power and photovoltaic maximum power is judged, if bearing power is big
In photovoltaic maximum power, then the output voltage reference value of off-network inverter is set according to maximum power point-tracing control method, and
Closed-loop control is carried out according to setting reference value；If bearing power is less than photovoltaic maximum power, off-network is set according to bearing power
The output voltage reference value of inverter, and closed-loop control is carried out according to setting reference value.
After completing from Grid-connected Control Strategy, control switch power good DC bus-bar voltage, and record this alternating current
State, into next control period.
The present invention has following advantages and effect compared with prior art:
(1) use avoids frequent and irregular manual maintenance, reducings the construction costs simultaneously from grid-connected integrated inverter
And the cost of manual maintenance.
(2) use the photovoltaic for communication base station from grid-connected integrated inverter power supply control system from grid-connected switching control
Strategy, it is ensured that from it is grid-connected when load end stabilization.
(3) use the photovoltaic for communication base station from grid-connected integrated inverter power supply control system from grid-connected switching control
Strategy can voluntarily adjust the power of photovoltaic power generation in off-network according to bearing power, and effect is improved in the case where protecting load
Rate.
Detailed description of the invention
Fig. 1 is the photovoltaic for base station of specific embodiment according to the present invention from grid-connected integrated inverter power supply control system
Structural schematic diagram；
Fig. 2 is the photovoltaic for base station of specific embodiment according to the present invention from grid-connected integrated inverter power supply control system
From grid-connected switching control flow diagram.
The technical characteristic in appended drawing reference the respectively referred to generation in figure are as follows:
1, photovoltaic input unit；2, city's electrical connection module；3, from grid-connected integrated inverter；4, first detection module；5,
Two detection modules；6, controller；7, contactor；8, Switching Power Supply；9, DC bus；10, battery；11, DC load.
Specific embodiment
The present invention is described in further detail with reference to the accompanying drawings and examples.It is understood that this place is retouched
The specific embodiment stated is used only for explaining the present invention rather than limiting the invention.It also should be noted that in order to just
Only the parts related to the present invention are shown in description, attached drawing rather than entire infrastructure.
The invention reside in: using controller, whether there is or not alternating currents by judging current time opens shutdown contactor, and pass through
Detection module changes the working method from grid-connected integrated inverter, realize from it is grid-connected when inverter can work normally, and mention
Supply the stable input of Switching Power Supply.
Specifically, the photovoltaic for base station for showing specific embodiment according to the present invention is inverse from grid-connected one referring to Fig. 1
Become device electric power supply control system structural schematic diagram.
The photovoltaic for being used for base station is electrically connected from grid-connected integrated inverter power supply control system, including photovoltaic input unit 1, city
Connection module 2, from grid-connected integrated inverter 3, first detection module 4, the second detection module 5, controller 6, contactor 7, switch electricity
Source 8, DC bus 9, battery 10, DC load 11；
The photovoltaic input unit is electrically connected with described one end from grid-connected integrated inverter, described from grid-connected integrated inversion
The device other end is electrically connected with the contactor and the Switching Power Supply, and the detection of the second detection module is described from grid-connected integrated inverter
Output voltage electric current；The contactor other end is electrically connected with city's electrical connection module, and the first detection module detects alternating current
The voltage and current at end；Switching Power Supply is output to DC bus, and the DC bus is that the battery and the DC load mention
For electric energy, the controller obtain the information of first detection module and the second detection and control it is described from grid-connected integrated inverter and
The contactor, whether there is or not alternating currents by judging current time to open shutdown contactor, realize from it is grid-connected when inverter can be just
Often work, and it is supplied to the stable input of Switching Power Supply.
Specifically: when the first detection module has detected that line voltage, the electric power supply control system are grid-connected work
Operation mode, the controller control is described to work from grid-connected integrated inverter in current source mode, it is preferred that work is in MPPT mould
Formula exports as the alternating current with alternating current same-phase with amplitude；The controller control is attracted contactor, and Switching Power Supply input is friendship
Galvanic electricity exports as DC bus, while giving battery and load supplying；When the first detection module detects no alternating current electricity
When stream, the electric power supply control system is off-network operating mode, and the controller control disconnects contactor, and is controlled described from grid-connected
Integrated inverter work is constant voltage constant frequency, photovoltaic input unit is only powered to Switching Power Supply at this time in voltage source mode.
No matter off-network or grid-connected, Switching Power Supply input is the alternating current from grid-connected integrated inverter output, exports and is
Direct current, while powering to battery and DC load.
According to the above-mentioned photovoltaic for base station from grid-connected integrated inverter power supply control system, according to first detection module
City's electricity condition, that is, city's electricity condition in this period is detected, and according to city's electricity condition of upper cycle detection, to judge the control to be carried out
System strategy, from grid-connected method for handover control include off-network switching Grid-connected Control Strategy, it is grid-connected after control strategy, it is grid-connected switch from
Control strategy after net control strategy and off-network.
Specifically, Fig. 2 shows the flow charts in the present invention from the various different situations in grid-connected method for handover control.
The off-network switches Grid-connected Control Strategy, specifically includes the following steps:
When the cycle detection of this secondary control is to have an alternating current, when upper secondary control cycle detection is no alternating current, then switched using off-network
Grid-connected Control Strategy, it is grid-connect mode that controller, which is controlled from grid-connected integrated inverter work, at this time, first will be from grid-connected integrated inversion
Device output control is arrived with alternating current same-phase with amplitude same frequency, further according to maximum power point-tracing control method (i.e. MPPT mode)
The output current reference value from grid-connected integrated inverter is set, and closed-loop control is carried out according to setting reference value, from grid-connected one
After inverter and alternating current same-phase are with amplitude same frequency, it is attracted contactor and alternating current is grid-connected.
The grid-connected rear control strategy, specifically includes the following steps:
When the cycle detection of this secondary control is to have alternating current, upper secondary control cycle detection is when having alternating current, then using grid-connected rear control
System strategy, it is grid-connected after control without operating contactor, need to only be set according to maximum power point-tracing control method from grid-connected one
The output current reference value of body inverter, and closed-loop control is carried out according to setting reference value.
The grid-connected switching off-network control strategy, specifically includes the following steps:
When the cycle detection of this secondary control is no alternating current, upper secondary control cycle detection is when having alternating current, then to use grid-connected switching
Off-network control strategy, controller control contactor disconnect, and control from grid-connected integrated inverter work in off-network mode.Judgement is negative
Power and photovoltaic maximum power are carried, if bearing power is greater than photovoltaic maximum power, according to maximum power point-tracing control method
The output voltage reference value of off-network inverter is set, and closed-loop control is carried out according to setting reference value；If bearing power is less than light
Maximum power is lied prostrate, then according to the output voltage reference value of bearing power setting off-network inverter, and is carried out according to setting reference value
Closed-loop control.
Control strategy after the off-network, specifically includes the following steps:
When the cycle detection of this secondary control is no alternating current, when upper secondary control cycle detection is no alternating current, then using being controlled after off-network
System strategy, controller is controlled to work from grid-connected integrated inverter, bearing power and photovoltaic maximum power is judged, if bearing power is big
In photovoltaic maximum power, then the output voltage reference value of off-network inverter is set according to maximum power point-tracing control method, and
Closed-loop control is carried out according to setting reference value；If bearing power is less than photovoltaic maximum power, off-network is set according to bearing power
The output voltage reference value of inverter, and closed-loop control is carried out according to setting reference value.
After completing from Grid-connected Control Strategy, control switch power good DC bus-bar voltage, and record this alternating current
State, into next control period.
The present invention has following advantages and effect compared with prior art:
(1) use avoids frequent and irregular manual maintenance, reducings the construction costs simultaneously from grid-connected integrated inverter
And the cost of manual maintenance.
(2) use the photovoltaic for communication base station from grid-connected integrated inverter power supply control system from grid-connected switching control
Strategy, it is ensured that from it is grid-connected when load end stabilization.
(3) use the photovoltaic for communication base station from grid-connected integrated inverter power supply control system from grid-connected switching control
Strategy can voluntarily adjust the power of photovoltaic power generation in off-network according to bearing power, and effect is improved in the case where protecting load
Rate.
The above content is a further detailed description of the present invention in conjunction with specific preferred embodiments, and it cannot be said that
A specific embodiment of the invention is only limitted to this, for those of ordinary skill in the art to which the present invention belongs, is not taking off
Under the premise of from present inventive concept, several simple deduction or replace can also be made, all shall be regarded as belonging to the present invention by institute
Claims of submission determine protection scope.
Claims (10)
1. a kind of photovoltaic for base station is from grid-connected integrated inverter power supply control system, it is characterised in that:
Including photovoltaic input unit, city's electrical connection module, from grid-connected integrated inverter, first detection module, the second detection module,
Controller, contactor, Switching Power Supply, DC bus, battery and DC load；
The photovoltaic input unit is electrically connected with described one end from grid-connected integrated inverter, described another from grid-connected integrated inverter
One end is electrically connected with the contactor and the Switching Power Supply, and the detection of the second detection module is described defeated from grid-connected integrated inverter
Voltage and current out；The contactor other end is electrically connected with city's electrical connection module, the first detection module detection mains terminal
Voltage and current；Switching Power Supply is output to DC bus, and the DC bus provides electricity for the battery and the DC load
Can, the controller obtains the information of first detection module and the second detection and controls described from grid-connected integrated inverter and described
Contactor, whether there is or not alternating currents by judging current time to open shutdown contactor, realize from it is grid-connected when inverter can normal work
Make, and is supplied to the stable input of Switching Power Supply.
2. electric power supply control system according to claim 1, it is characterised in that:
When the first detection module has detected that line voltage, the electric power supply control system are grid-connected operating mode, the control
Device control processed is described to work from grid-connected integrated inverter in current source mode, exports as the exchanging with amplitude with alternating current same-phase
Electricity；Controller control is attracted contactor, and Switching Power Supply input is alternating current, exports as DC bus, while giving battery
And load supplying；When the first detection module detects no mains current, the electric power supply control system is off-network work
Mode, it is permanent that the controller, which controls, which disconnects contactor, and works from grid-connected integrated inverter in voltage source mode described in control
Constant frequency is pressed, photovoltaic input unit is only powered to Switching Power Supply at this time.
3. electric power supply control system according to claim 2, it is characterised in that:
It works from grid-connected integrated inverter in current source mode when described, specific works are in MPPT mode.
4. electric power supply control system described in any one of -3 according to claim 1, it is characterised in that:
No matter off-network or grid-connected, the Switching Power Supply input is the alternating current from grid-connected integrated inverter output, exports and is
Direct current, while powering to battery and DC load.
5. a kind of photovoltaic described in any one of -4 for base station according to claim 1 is from grid-connected integrated inverter power supply
Control system from grid-connected method for handover control, comprising:
According to city's electricity condition of first detection module, that is, city's electricity condition in this period is detected, and according to the alternating current of upper cycle detection
State includes off-network switching Grid-connected Control Strategy, grid-connected from grid-connected method for handover control to judge the control strategy to be carried out
Control strategy after control strategy, grid-connected switching off-network control strategy and off-network afterwards.
6. according to claim 5 from grid-connected method for handover control, it is characterised in that:
The off-network switches Grid-connected Control Strategy, specifically includes the following steps:
When the cycle detection of this secondary control is to have an alternating current, when upper secondary control cycle detection is no alternating current, then off-network is used to switch grid-connected
Control strategy, it is grid-connect mode that controller, which is controlled from grid-connected integrated inverter work, at this time, first will be defeated from grid-connected integrated inverter
Control, with amplitude same frequency, is set inverse from grid-connected one to alternating current same-phase further according to maximum power point-tracing control method out
Become the output current reference value of device, and closed-loop control is carried out according to setting reference value, from grid-connected integrated inverter and the same phase of alternating current
After position is with amplitude same frequency, it is attracted contactor and alternating current is grid-connected.
7. according to claim 5 from grid-connected method for handover control, it is characterised in that:
The grid-connected rear control strategy, specifically includes the following steps:
When the cycle detection of this secondary control is to have alternating current, upper secondary control cycle detection is when having alternating current, then using grid-connected rear control plan
Slightly, the control after grid-connected need to be only set inverse from grid-connected one according to maximum power point-tracing control method without operating contactor
Become the output current reference value of device, and closed-loop control is carried out according to setting reference value.
8. according to claim 5 from grid-connected method for handover control, it is characterised in that:
The grid-connected switching off-network control strategy, specifically includes the following steps:
When the cycle detection of this secondary control is no alternating current, upper secondary control cycle detection is when having alternating current, then to use grid-connected switching off-network
Control strategy, controller control contactor disconnect, and control from grid-connected integrated inverter work in off-network mode, judge to load function
Rate and photovoltaic maximum power are set if bearing power is greater than photovoltaic maximum power according to maximum power point-tracing control method
The output voltage reference value of off-network inverter, and closed-loop control is carried out according to setting reference value；If bearing power is less than photovoltaic most
It is high-power, then according to the output voltage reference value of bearing power setting off-network inverter, and closed loop is carried out according to setting reference value
Control.
9. according to claim 5 from grid-connected method for handover control, it is characterised in that:
Control strategy after the off-network, specifically includes the following steps:
When the cycle detection of this secondary control is no alternating current, when upper secondary control cycle detection is no alternating current, then using controlling plan after off-network
Slightly, controller is controlled works from grid-connected integrated inverter, bearing power and photovoltaic maximum power is judged, if bearing power is greater than light
Lie prostrate maximum power, then according to the output voltage reference value of maximum power point-tracing control method setting off-network inverter, and according to
It sets reference value and carries out closed-loop control；If bearing power is less than photovoltaic maximum power, off-network inversion is set according to bearing power
The output voltage reference value of device, and closed-loop control is carried out according to setting reference value.
10. from grid-connected method for handover control according to any one of claim 6-9, it is characterised in that:
After completing from Grid-connected Control Strategy, control switch power good DC bus-bar voltage, and this city's electricity condition is recorded,
Into next control period.
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| CN201811212913.4A CN109245161A (en) | 2018-10-18 | 2018-10-18 | Photovoltaic for base station is from grid-connected integrated inverter power supply control system and method |
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| CN201811212913.4A CN109245161A (en) | 2018-10-18 | 2018-10-18 | Photovoltaic for base station is from grid-connected integrated inverter power supply control system and method |
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Cited By (3)
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| CN110212580A (en) * | 2019-06-18 | 2019-09-06 | 深圳市尚科新能源有限公司 | A kind of island control method and system suitable for solar energy storing and electricity generating system |
| CN112751354A (en) * | 2019-10-29 | 2021-05-04 | 合肥阳光新能源科技有限公司 | Photovoltaic off-grid hydrogen production system, control method and controller |
| CN114825641A (en) * | 2022-06-14 | 2022-07-29 | 国网山东省电力公司聊城市茌平区供电公司 | Intelligent energy grid-connected circuit breaker and control method thereof |
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| CN110212580A (en) * | 2019-06-18 | 2019-09-06 | 深圳市尚科新能源有限公司 | A kind of island control method and system suitable for solar energy storing and electricity generating system |
| CN110212580B (en) * | 2019-06-18 | 2022-12-27 | 深圳市尚科新能源有限公司 | Island control method and system suitable for solar energy storage power generation system |
| CN112751354A (en) * | 2019-10-29 | 2021-05-04 | 合肥阳光新能源科技有限公司 | Photovoltaic off-grid hydrogen production system, control method and controller |
| CN114825641A (en) * | 2022-06-14 | 2022-07-29 | 国网山东省电力公司聊城市茌平区供电公司 | Intelligent energy grid-connected circuit breaker and control method thereof |
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