CN106786804B - Output power regulation and control method and energy management system of light storage hybrid grid-connected power generation system - Google Patents
Output power regulation and control method and energy management system of light storage hybrid grid-connected power generation system Download PDFInfo
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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
- H02J3/46—Controlling of the sharing of output between the generators, converters, or transformers
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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
- H02J3/28—Arrangements for balancing of the load in a network by storage of energy
- H02J3/32—Arrangements for balancing of the load in a network by storage of energy using batteries with converting means
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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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- 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
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Abstract
The application discloses light stores up mixesThe method for regulating and controlling the output power of the merging network power generation system comprises the following steps: obtaining the actual power value P of the light storage hybrid grid-connected power generation system at the power limit pointrealAnd a power limiting threshold Plimit(ii) a When P is presentreal>PlimitIn time, the light storage hybrid grid-connected power generation system is controlled to enter a power limiting mode, so that P is enabledreal≤Plimit(ii) a In the limited power mode, when Preal‑Plimit>‑ΔPlimitAt the time of charging, the charging/discharging power of the storage battery is changed in a direction of increasing the charging power by Δ PlimitIs a preset value; when P is presentreal≤PlimitAnd when the state lasts for the preset time, controlling the light storage hybrid grid-connected power generation system to exit the limited power mode. The application realizes the maintenance of the high utilization rate of the photovoltaic energy in the power limiting mode.
Description
Technical Field
The invention relates to the technical field of optical storage hybrid grid-connected power generation, in particular to an output power regulation and control method and an energy management system of an optical storage hybrid grid-connected power generation system.
Background
The structure of a light storage hybrid grid-connected power generation system (hereinafter referred to as a microgrid) is shown in fig. 1, a photovoltaic cell panel and a storage battery are connected to a direct current side of an inverter, and an alternating current side of the inverter is connected to a large power grid and a local load. When the micro-grid is in grid-connected operation, the large grid provides rigid voltage and frequency support. Under the control of an energy management system (not shown in the figure), the photovoltaic Power generation keeps an MPPT (Maximum Power Point Tracking) mode, the storage battery discharges when the photovoltaic Power generation cannot meet the local load demand, and when the photovoltaic Power generation is greater than the local load demand, the redundant electric energy is supplied to the storage battery for charging, so that the local Power generation of the microgrid is basically balanced with the local load demand, that is, the switching Power of a grid-connected Point is basically zero.
In order to meet the requirement of large power grid feed scheduling, the micro-grid is often required to have the capacity of limited power operation in addition to the normal operating mode, and how to keep the high utilization rate of photovoltaic energy in the limited power mode is a problem to be solved urgently in the field.
Disclosure of Invention
In view of this, the invention provides an output power regulation method and an energy management system for a light storage hybrid grid-connected power generation system, so as to keep a higher utilization rate of photovoltaic energy in a power limiting mode.
An output power regulation and control method for an optical storage hybrid grid-connected power generation system comprises the following steps:
obtaining the actual power value P of the light storage hybrid grid-connected power generation system at the power limit pointrealAnd a power limiting threshold Plimit；
When P is presentreal>PlimitIn time, the light storage hybrid grid-connected power generation system is controlled to enter a power limiting mode, so that P is enabledreal≤Plimit；
In the limited power mode, when P isreal-Plimit>-ΔPlimitAt the time of charging, the charging/discharging power of the storage battery is changed in a direction of increasing the charging power by Δ PlimitIs a preset value;
when P is presentreal≤PlimitAnd when the state lasts for the preset time, controlling the light storage hybrid grid-connected power generation system to exit the power limiting mode.
The method for controlling the light storage hybrid grid-connected power generation system to enter a power limiting mode comprises the following steps: step-by-step reduction of P by a certain step lengthreal；
The control light stores up and mixes the grid-connected power generation system and withdraws from limit power mode includes: step-by-step lifting P by a certain step lengthreal。
Wherein the step-down P is performed in a certain steprealThe method comprises the following steps: and gradually raising the output voltage of the photovoltaic cell panel according to a certain step length.
Wherein the changing of the battery charge/discharge power in a direction to increase the charge power includes: the charge and discharge power of the storage battery is gradually controlled to change towards the direction of increasing the charge power according to a certain step length.
When the light storage hybrid grid-connected power generation system is controlled to exit the power limiting mode, the speed of recovering the maximum power output of the photovoltaic cell panel is not less than the speed of recovering the normal charge and discharge state of the storage battery.
An energy management system, comprising:
an information acquisition unit forObtaining the actual power value P of the light storage hybrid grid-connected power generation system at the power limit pointrealAnd a power limiting threshold Plimit；
An operation mode switching unit for switching between P and Preal>PlimitIn time, the light storage hybrid grid-connected power generation system is controlled to enter a power limiting mode, so that P is enabledreal≤Plimit(ii) a At Preal≤PlimitWhen the state lasts for a preset time, controlling the light storage hybrid grid-connected power generation system to exit the power limiting mode;
a power limiting control unit used for P under the condition that the light storage hybrid grid-connected power generation system is in the power limiting modereal-Plimit>-ΔPlimitAt the time of charging, the charging/discharging power of the storage battery is changed in a direction of increasing the charging power by Δ PlimitIs a predetermined value.
Wherein the working mode switching unit is specifically used for switching between P and Preal>PlimitWhile gradually reducing P by a certain step lengthrealSo that P isreal≤Plimit(ii) a At Preal≤PlimitWhen the state lasts for a preset time, the P is gradually increased according to a certain step lengthreal。
Wherein the working mode switching unit gradually decreases P according to a certain step lengthrealThe method comprises the following steps: and gradually raising the output voltage of the photovoltaic cell panel according to a certain step length.
The power limiting control unit is specifically used for controlling the power limiting mode of the optical storage hybrid grid-connected power generation system in the power limiting mode Preal-Plimit>-ΔPlimitThen, the charging and discharging power of the storage battery is gradually controlled to change in the direction of increasing the charging power according to a certain step length, and delta PlimitIs a predetermined value.
The working mode switching unit controls the light storage hybrid grid-connected power generation system to exit the power limiting mode, and the speed of recovering the maximum power output of the photovoltaic cell panel is not less than the speed of recovering the normal charge and discharge state of the storage battery.
According to the technical scheme, when the actual power value of the power limiting point is slightly lower than the power limiting threshold value, namely only a small amount of energy flows backwards, the charging and discharging power of the storage battery is changed towards the direction of increasing the charging power, so that after the light-storage hybrid grid-connected power generation system enters the power limiting mode, the part of photovoltaic energy which is limited to be output is used for charging the storage battery, and the photovoltaic energy waste is avoided.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a light storage hybrid grid-connected power generation system disclosed in the prior art;
fig. 2 is a flowchart of an output power regulation method of a light storage hybrid grid-connected power generation system according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of an energy management system according to an embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1, an embodiment of the present invention discloses a method for regulating and controlling output power of a light storage hybrid grid-connected power generation system, so as to maintain a high utilization rate of photovoltaic energy in a power-limited mode, including:
step S01: obtaining the actual power value P of the light storage hybrid grid-connected power generation system at the power limit pointrealAnd a power limiting threshold Plimit。
Step S02: judging whether P is satisfiedreal>PlimitWhen P isreal>PlimitThen, the process proceeds to step S03; otherwise, the process returns to step S01.
In particular, the actual power value P of the power limiting pointrealThe difference between the output power of the inverter and the power required by the local load is equal to the exchange power of the grid-connected point. Power limiting threshold PlimitThe threshold value is used for determining whether the light storage hybrid grid-connected power generation system enters a power limiting mode or not, and when the threshold value is Preal>PlimitAnd when the power is not used, the light storage hybrid grid-connected power generation system enters a power limiting mode, otherwise, the light storage hybrid grid-connected power generation system does not enter the power limiting mode. Wherein, the power limit point is the corresponding power limit threshold value P when the output end of the inverter is the power limit pointlimitThe power limit threshold P corresponding to the grid-connected pointlimitThe values of (a) are necessarily different.
Step S03: controlling the light storage hybrid grid-connected power generation system to enter a power limiting mode so that P isreal≤Plimit。
Specifically, according to the output characteristics of the photovoltaic cell panel, the output power of the photovoltaic cell panel changes along with the output voltage of the photovoltaic cell panel, and the farther the output voltage of the photovoltaic cell panel deviates from the maximum power point, the smaller the output power of the photovoltaic cell panel. Before entering the power limiting mode, the photovoltaic power generation keeps the MPPT mode, namely the photovoltaic cell panel always works at the maximum power point, on the basis, the output power of the photovoltaic cell panel can be reduced by lifting or reducing the output voltage of the photovoltaic cell panel, and therefore the light storage hybrid grid-connected power generation system enters the power limiting mode.
However, considering that when the photovoltaic cell panel output voltage is reduced to make the optical storage hybrid grid-connected power generation system enter the power limiting mode, the photovoltaic cell panel output voltage may be lower than the minimum operating voltage of the inverter, so the embodiment preferably raises the photovoltaic cell panel output voltage to make the optical storage hybrid grid-connected power generation system enter the power limiting mode.
Step S04: in the limited power mode, when P isreal-Plimit>-ΔPlimitChanging the charging and discharging power of the storage battery to the direction of increasing the charging power; when P is presentreal-Plimit≤-ΔPlimitWhen the battery is in the charging state, the control state of "changing the charging/discharging power of the battery in the direction of increasing the charging power" is exited, i.e., Δ PlimitIs a predetermined value.
In the limited power mode, when Preal-Plimit>-ΔPlimit(as P)realSlightly lower than Plimit) When the power grid is connected with the grid-connected hybrid grid-connected power generation system, the energy of the backward flow of the power grid to the grid-connected hybrid grid-connected power generation system is less, and the backward flow belongs to an allowed range, namely within a required limited power precision range. Moreover, after the light storage hybrid grid-connected power generation system enters the power limiting mode, the part of the photovoltaic energy which is limited to be output is wasted if not utilized. Combining these two considerations, the present embodiment is at PrealSlightly lower than PlimitDuring the charging and discharging process, the charging and discharging power of the storage battery is changed to the direction of increasing the charging power, so that the part of the photovoltaic energy which is limited to be output is used for charging the storage battery, and the photovoltaic energy waste is avoided.
In the limited power mode, when Preal-Plimit≤-ΔPlimit(as P)realIs significantly lower than Plimit) If the charging and discharging power of the storage battery is continuously controlled to change towards the direction of increasing the charging power, the power grid will flow back more energy to the optical storage hybrid grid-connected power generation system and exceed the allowed range, so the control state of changing the charging and discharging power of the storage battery towards the direction of increasing the charging power must be quitted at the moment, and the charging and discharging power of the storage battery is kept unchanged or changed towards the direction of increasing the discharging power.
Here, the charge/discharge power of the battery is defined as a signed quantity Pc/d，Pc/d0 means that the battery is neither charged nor discharged, Pc/dThe trend from positive to 0 represents the gradual reduction of the charging power of the storage battery, Pc/dGoing from negative to 0 indicates a gradual decrease in battery discharge power. Before the light storage hybrid grid-connected power generation system enters a power limiting mode, the storage battery can be in a charging state or in a charging stateCan be in a discharging state, and the charging and discharging power of the storage battery is changed to the direction of increasing the discharging power, namely, P is reducedc/dIf the accumulator is in the charged state, P is decreased from the charged statec/dIf the accumulator is in the discharge state, P is decreased from the discharge statec/d。
ΔPlimitThe value of (a) should not be too large nor too small, if the value is too large, the grid side reverse irrigation power is too large, and if the value is too small, the part of photovoltaic energy which is limited to be output is not enough to be converted into the storage battery charging power.
Step S05: when P is presentreal≤PlimitAnd when the state lasts for a preset time, controlling the light storage hybrid grid-connected power generation system to exit the power limiting mode, wherein the length of the preset time is determined according to the microgrid grid-connected standard.
From the above, the actual power value P at the power limit point in the present embodiment is knownrealSlightly below the power limit threshold PlimitWhen the photovoltaic energy storage hybrid grid-connected power generation system is in a power limiting mode, the output of the photovoltaic energy storage hybrid grid-connected power generation system is limited, and the storage battery is charged by the photovoltaic energy, so that photovoltaic energy waste is avoided.
In addition, it should be noted that, in order to ensure that the optical storage hybrid grid-connected power generation system smoothly enters and exits the power limit mode and avoid large voltage power fluctuation, in this embodiment, when the optical storage hybrid grid-connected power generation system is controlled to enter the power limit mode, P is gradually reduced according to a certain step lengthrealThe step length is set according to the limited power scheduling response time and the precision requirement; when the light storage hybrid grid-connected power generation system is controlled to exit the power limiting mode, the P is gradually increased according to a certain step lengthreal. Correspondingly, when P is gradually decreased by a certain step lengthrealIn the embodiment, a mode of gradually raising the output voltage of the photovoltaic cell panel according to a certain step length is recommended.
Similarly, to avoid the large voltage power fluctuation in the limited power mode, the embodiment is implemented at Preal-Plimit>-ΔPlimitIn a certain stepThe charging and discharging power of the storage battery is controlled to change towards the direction of increasing the charging power in a long step-by-step mode. The corresponding step length under each control action is set according to actual needs without limitation.
In addition, the known optical storage hybrid grid-connected power generation system exits the power-limited mode, and the known optical storage hybrid grid-connected power generation system includes: the photovoltaic cell panel gradually recovers the maximum power output, and the storage battery recovers the normal charge-discharge state and the like. When the light storage hybrid grid-connected power generation system is controlled to exit the power limiting mode, the speed of recovering the maximum power output of the photovoltaic cell panel is recommended to be not less than the speed of recovering the normal charge and discharge state of the storage battery, so that the photovoltaic cell panel can output the maximum power as soon as possible to reduce the discharge capacity of the storage battery, otherwise, the part of energy output by the photovoltaic cell panel in a delayed mode is provided by the discharge of the storage battery.
Referring to fig. 3, an embodiment of the present invention further discloses an energy management system, so as to maintain a high utilization rate of photovoltaic energy in a limited power mode, including:
an information obtaining unit 100, configured to obtain an actual power value P of the optical storage hybrid grid-connected power generation system at a power limit pointrealAnd a power limiting threshold Plimit；
An operation mode switching unit 200 for switching between P and Preal>PlimitIn time, the light storage hybrid grid-connected power generation system is controlled to enter a power limiting mode, so that P is enabledreal≤Plimit(ii) a At Preal≤PlimitWhen the state lasts for a preset time, controlling the light storage hybrid grid-connected power generation system to exit the power limiting mode;
a power limiting control unit 300 for controlling the power limiting mode of the grid-connected hybrid optical storage system according to the power limit modereal-Plimit>-ΔPlimitAt the time of charging, the charging/discharging power of the storage battery is changed in a direction of increasing the charging power by Δ PlimitIs a predetermined value.
Wherein the operation mode switching unit 200 is specifically used for switching between P and Preal>PlimitWhile gradually reducing P by a certain step lengthrealSo that P isreal≤Plimit(ii) a At Preal≤PlimitWhen the state lasts for a preset time, the P is gradually increased according to a certain step lengthreal。
Wherein the operation mode switching unit 200 decreases P step by a certain step lengthrealThe method comprises the following steps: and gradually raising the output voltage of the photovoltaic cell panel according to a certain step length.
The limited power control unit 300 is specifically configured to be used in P when the optical storage hybrid grid-connected power generation system is in the limited power modereal-Plimit>-ΔPlimitThen, the charging and discharging power of the storage battery is gradually controlled to change in the direction of increasing the charging power according to a certain step length, and delta PlimitIs a predetermined value.
The working mode switching unit 200 controls the optical storage hybrid grid-connected power generation system to exit the power limiting mode, and the speed of recovering the maximum power output of the photovoltaic cell panel is not less than the speed of recovering the normal charge and discharge state of the storage battery.
In summary, the actual power value P at the power limit point of the present inventionrealSlightly below the power limit threshold PlimitWhen the photovoltaic energy storage hybrid grid-connected power generation system is in a power limiting mode, the output of the photovoltaic energy storage hybrid grid-connected power generation system is limited, and the storage battery is charged by the photovoltaic energy, so that photovoltaic energy waste is avoided.
The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other. For the energy management system disclosed by the embodiment, the description is simple because the energy management system corresponds to the method disclosed by the embodiment, and the relevant points can be referred to the method part for description.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the embodiments. Thus, the present embodiments are not intended to be limited to the embodiments shown herein but are to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (10)
1. The output power regulation and control method of the optical storage hybrid grid-connected power generation system is characterized by comprising the following steps:
obtaining the actual power value P of the light storage hybrid grid-connected power generation system at the power limit pointrealAnd a power limiting threshold Plimit；
When P is presentreal＞PlimitIn time, the light storage hybrid grid-connected power generation system is controlled to enter a power limiting mode, so that P is enabledreal≤Plimit；
Under the power limiting mode, the output power of the photovoltaic cell panel is reduced by lifting or reducing the output voltage of the photovoltaic cell panel;
in the limited power mode, when P isreal-Plimit＞-ΔPlimitWhen the charging and discharging power of the storage battery is changed to the direction of increasing the charging power, the part of the photovoltaic energy which is limited to be output at present is used for charging the storage battery, and delta PlimitIs a preset value; when P is presentreal-Plimit≤-ΔPlimitWhen the charging and discharging power of the storage battery is kept unchanged, or the charging and discharging power of the storage battery is changed to the direction of increasing the discharging power;
when P is presentreal≤PlimitAnd when the state lasts for the preset time, controlling the light storage hybrid grid-connected power generation system to exit the power limiting mode.
2. The output power regulation method of the optical storage hybrid grid-connected power generation system according to claim 1, wherein the step of controlling the optical storage hybrid grid-connected power generation system to enter a power limiting mode comprises the steps of: step-by-step reduction of P by a certain step lengthreal；
The control light stores up and mixes the grid-connected power generation system and withdraws from limit power mode includes: step-by-step lifting P by a certain step lengthreal。
3. The output power regulation method of the optical storage hybrid grid-connected power generation system according to claim 2, wherein the P is gradually reduced according to a certain step lengthrealThe method comprises the following steps: and gradually raising the output voltage of the photovoltaic cell panel according to a certain step length.
4. The output power regulation method of the optical storage hybrid grid-connected power generation system according to claim 1, wherein the changing of the storage battery charging and discharging power in the direction of increasing the charging power comprises: the charge and discharge power of the storage battery is gradually controlled to change towards the direction of increasing the charge power according to a certain step length.
5. The method for regulating and controlling the output power of the optical storage hybrid grid-connected power generation system according to claim 1, wherein when the optical storage hybrid grid-connected power generation system is controlled to exit the power limiting mode, the speed of recovering the maximum power output of the photovoltaic cell panel is not less than the speed of recovering the normal charge and discharge state of the storage battery.
6. An energy management system, comprising:
an information acquisition unit used for acquiring the actual power value P of the light storage hybrid grid-connected power generation system at a power limit pointrealAnd a power limiting threshold Plimit；
An operation mode switching unit for switching between P and Preal＞PlimitIn time, the light storage hybrid grid-connected power generation system is controlled to enter a power limiting mode, so that P is enabledreal≤Plimit(ii) a At Preal≤PlimitWhen the state lasts for a preset time, controlling the light storage hybrid grid-connected power generation system to exit the power limiting mode; under the power limiting mode, the output power of the photovoltaic cell panel is reduced by lifting or reducing the output voltage of the photovoltaic cell panel;
a power limiting control unit used for P under the condition that the light storage hybrid grid-connected power generation system is in the power limiting modereal-Plimit＞-ΔPlimitCharging and discharging the accumulatorThe rate is changed in the direction of increasing charging power, the part of the photovoltaic energy which is currently limited to be output is used for charging the storage battery, delta PlimitIs a preset value; when P is presentreal-Plimit≤-ΔPlimitIn this case, the charge/discharge power of the storage battery is kept constant, or the charge/discharge power of the storage battery is changed in a direction to increase the discharge power.
7. Energy management system according to claim 6, characterized in that the operating mode switching unit is specifically adapted to switch between P and Preal＞PlimitWhile gradually reducing P by a certain step lengthrealSo that P isreal≤Plimit(ii) a At Preal≤PlimitWhen the state lasts for a preset time, the P is gradually increased according to a certain step lengthreal。
8. The energy management system of claim 7, wherein the operating mode switching unit decreases P step by a step sizerealThe method comprises the following steps: and gradually raising the output voltage of the photovoltaic cell panel according to a certain step length.
9. The energy management system of claim 6, wherein the power limiting control unit is specifically configured to operate in the power limiting mode when the optical storage hybrid grid-connected power generation system is in the power limiting mode at Preal-Plimit＞-ΔPlimitThen, the charging and discharging power of the storage battery is gradually controlled to change in the direction of increasing the charging power according to a certain step length, and delta PlimitIs a predetermined value.
10. The energy management system of claim 6, wherein the operating mode switching unit is configured to ensure that a speed of recovering the maximum power output of the photovoltaic panel is not less than a speed of recovering a normal charge and discharge state of the storage battery when the operating mode switching unit controls the optical storage hybrid grid-connected power generation system to exit the power limiting mode.
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| CN112119559A (en) * | 2018-03-22 | 2020-12-22 | 通用电气公司 | Dual sampling maximum power point tracking with dynamic power limiting for power systems |
| US11031781B1 (en) | 2020-05-04 | 2021-06-08 | 8Me Nova, Llc | Method for implementing power delivery transaction for potential electrical output of integrated renewable energy source and energy storage system facility |
| CA3121360C (en) * | 2020-05-04 | 2022-04-19 | 8Me Nova, Llc | Systems and methods utilizing ac overbuilt renewable electric generation resource and charge storage device providing desired capacity factor |
| US11916383B2 (en) | 2020-05-04 | 2024-02-27 | 8Me Nova, Llc | Implementing power delivery transaction for potential electrical output of integrated renewable energy source and energy storage system facility |
| CN112213584B (en) * | 2020-09-29 | 2024-04-09 | 阳光智维科技股份有限公司 | Inverter power-limited operation diagnosis method, device and monitoring equipment |
| CN112234635B (en) * | 2020-10-29 | 2023-04-07 | 阳光新能源开发股份有限公司 | New energy storage system and power adjusting method and power distribution method thereof |
| CN112398174B (en) * | 2020-12-03 | 2023-06-30 | 阳光电源股份有限公司 | Maximum output power determining method, device, controller and system of power generation system |
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