CN115579923A - Energy storage optimization operation method and device for multiple scenes and multiple targets - Google Patents
Energy storage optimization operation method and device for multiple scenes and multiple targets Download PDFInfo
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- 238000004146 energy storage Methods 0.000 title claims abstract description 251
- 238000000034 method Methods 0.000 title claims abstract description 32
- 238000005457 optimization Methods 0.000 title claims abstract description 15
- 238000007599 discharging Methods 0.000 claims abstract description 46
- 238000010248 power generation Methods 0.000 claims abstract description 15
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- 238000004590 computer program Methods 0.000 claims description 9
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- 238000013486 operation strategy Methods 0.000 abstract description 12
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- 238000005261 decarburization Methods 0.000 description 1
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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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- 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
- H02J3/381—Dispersed generators
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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
- H02J2300/00—Systems for supplying or distributing electric power characterised by decentralized, dispersed, or local generation
- H02J2300/20—The dispersed energy generation being of renewable origin
- H02J2300/22—The renewable source being solar energy
- H02J2300/24—The renewable source being solar energy of photovoltaic origin
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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
Abstract
The invention discloses an energy storage optimization operation method and device for multiple scenes and multiple targets, which comprises the following steps: acquiring an operation mode of an energy storage battery; when the energy storage battery is in an automatic operation mode, the SOC of the charge quantity of the energy storage battery is greater than the charging constraint, or the SOC is less than the discharging constraint, the energy storage battery stops charging and discharging, and the energy storage battery is in a standby state; when the energy storage battery is in a standby state, receiving the issued inter-platform area mutual aid power when the difference value between the photovoltaic power generation power and the inter-platform area load power and the inter-platform area mutual aid power is not equal to 0; when the SOC is smaller than the sum of the charging and discharging depth and the discharging constraint of the energy storage battery, charging the energy storage battery at the low price; when the energy storage battery is in a planned operation mode, manually intervening to charge or discharge according to the SOC; and a discharging instruction is issued through manual intervention in a special time period and an emergency scene to ensure power supply. The problem of prior art can't realize high-efficient, nimble energy storage resource's of utilizing according to the demand adjustment operation strategy of actual occasion is solved.
Description
Technical Field
The invention relates to the technical field of energy storage, in particular to an energy storage optimization operation method and device for multiple scenes and multiple targets.
Background
Along with the state that the development and the technical application of the energy storage industry are brought into the energy development strategy, the energy storage technology gradually becomes an important supporting technology for accelerating the clean low-carbon transformation of the power industry and guaranteeing the safe and stable operation of a novel power system mainly using new energy in the future, and the large-scale application of the energy storage technology can powerfully promote the deep decarburization of the whole society and promote the achievement of the double-carbon target. At present, the application scale of energy storage equipment is continuously expanded, but the demand targets of different application occasions are different due to different electricity price levels, market policies and subsidy mechanisms, and the application requirements on energy storage are different from one another. Therefore, how to reasonably optimize the energy storage operation strategy and efficiently utilize energy storage resources has very important significance for large-scale popularization and application of energy storage.
Most of the control targets of the existing energy storage operation strategies aim at time-of-use electricity price management, energy is stored in low-ebb electricity prices, and energy is released in high-ebb electricity prices, so that the effects of peak clipping and valley filling are achieved. However, the operation strategy does not consider the application requirements of the actual distribution room, the strategy is fixed and rigid, the control target is single, the operation strategy cannot be adjusted according to the requirements of the actual occasion, and the energy storage resources cannot be efficiently and flexibly utilized.
Disclosure of Invention
In order to solve the above problems, the present invention provides an energy storage optimization operation method and device for multiple scenes and multiple targets, comprising:
acquiring operation modes of an energy storage battery, wherein the operation modes comprise an automatic operation mode and a planned operation mode;
when the energy storage battery is in the automatic operation mode, the SOC of the energy storage battery in the charging state is greater than the charging constraintD charge_threshold Or the SOC of the energy storage battery in the discharging state is smaller than the discharging constraintD discharge_threshold The energy storage battery stops charging or discharging, and the energy storage battery is in a standby state;
when the energy storage battery is in a standby state of an automatic operation mode, the photovoltaic power generation power is generatedP PV And load power of cellP load Power of mutual aid between stationsP Δ The difference value of the power difference value is not equal to 0, and inter-station mutual aid power transmitted by the superior master station is received; when the SOC of the energy storage battery is smaller than the charging and discharging depth of the energy storage batteryD ref And confinement of dischargeD discharge_threshold In sum, according to the demand targets of peak clipping and valley filling and emergency power protection, the energy storage battery is charged at the time of low price of electricity until the SOC of the charged electricity is equal to the charging constraintD charge_threshold ；
When the energy storage battery is in a planned operation mode, the energy storage battery is charged or discharged through manual intervention according to the charge quantity SOC of the energy storage battery; and a discharge instruction is issued through manual intervention in a special time period and an emergency scene, so that power supply is ensured.
Further, when the energy storage battery is in an automatic operation mode, the energy storage battery is in an automatic operation modeP PV -P load -P Δ >0, determining that the energy storage battery works in a charging state and charging powerP charge =P PV -P load -P Δ ；
When in useP PV -P load -P Δ <0, determining that the energy storage battery works in a discharge state and discharge powerP discharge =P PV -P load -P Δ 。
Further, when photovoltaicGenerated powerP PV And power of load of power stationP load Power of mutual aid between stationsP Δ The difference is not equal to 0, receiving the inter-station mutual aid power issued by the superior master station, comprising:
when the temperature is higher than the set temperatureP PV -P load -P Δ >0, orP PV -P load -P Δ <0, receiving the inter-station mutual power transmitted by the superior master station to enable the superior master station to transmit the inter-station mutual powerP PV -P load -P Δ =0。
Further, when the SOC of the charge quantity of the energy storage battery is smaller than the charge-discharge depth of the energy storage batteryD ref And confinement of dischargeD discharge_threshold In sum, according to the demand targets of peak clipping, valley filling and emergency power supply protection, in the low-price valley, after the step of charging the energy storage battery, the method further comprises the following steps: when the charge SOC of the energy storage battery is = D charge_threshold And when the energy storage battery is charged, the energy storage battery stops charging.
Further, the method also comprises the following steps:
according to the demand targets of peak clipping and valley filling and emergency power supply protection, the SOC of the energy storage battery needs to be kept at the SOC>D ref +D discharge_threshold At the time of low price of electricity, at a preset charge start-stop time t 1 、t 2 In the time range of (3), the energy storage battery is charged according to the charge quantity of the energy storage battery.
Further, the energy storage battery is in a planned operation mode, and the method comprises the following steps: the method comprises the following steps of manually intervening an operation scene, a special time period power protection scene and an emergency power protection and supply scene.
Furthermore, when the upper-level master station issues a charging or discharging control instructionP bat When the energy storage battery enters a manual intervention operation scene, if so, the energy storage battery enters a manual intervention operation sceneD discharge_threshold <SOC<D charge_threshold In time, the energy storage battery operates according to a power instruction issued by the main station;
when SOC is reached>D charge_threshold Or SOC< D discharge_threshold When the energy storage battery stops charging or discharging, the energy storage battery is charged or dischargedEntering a standby state;
the energy storage battery is in a standby state if the SOC is not the same<D ref +D discharge_threshold And when the electricity price is in the off-peak period, the energy storage battery works in a charging state until the SOC = D charge_threshold And when the energy storage battery is charged, the energy storage battery stops charging.
Further, when the energy storage battery is in a special time period power-preserving scene, the starting and stopping time t of the special time period power-preserving is set 3 、t 4 And discharge command of energy storage batteryP bat The energy storage battery is in a discharge state when the SOC is< D discharge_threshold When the energy storage battery is in the standby state, the energy storage battery stops discharging;
the energy storage battery is in a standby state when the SOC is<D ref +D discharge_threshold And when the electricity price is in the low valley period, the energy storage battery works in a charging state until the SOC = D charge_threshold And when the energy storage battery is charged, the energy storage battery stops charging.
Further, when the energy storage battery is in an emergency power supply protection scene, an emergency discharging instruction of the energy storage battery is setP bat When the SOC is< D discharge_threshold When the energy storage battery is in a standby state, the energy storage battery stops discharging;
the energy storage battery is in a standby state when the SOC is<D ref +D discharge_threshold And when the electricity price is in the low valley period, the energy storage battery works in a charging state until the SOC = D charge_threshold And when the energy storage battery is charged, the energy storage battery stops charging.
The invention also provides an energy storage optimized operation device for multiple scenes and multiple targets, which comprises:
the operation mode acquisition unit is used for acquiring the operation modes of the energy storage battery, wherein the operation modes comprise an automatic operation mode and a plan operation mode;
a first automatic mode operation unit for enabling the SOC of the charged state of the energy storage battery to be larger than the charging constraint when the energy storage battery is in the automatic operation modeD charge_threshold Or the energy storage battery is atSOC of charge in discharge state is less than discharge constraintD discharge_threshold The energy storage battery stops charging or discharging, and the energy storage battery is in a standby state;
a second automatic mode operation unit for generating photovoltaic power when the energy storage battery is in the standby state of the automatic operation modeP PV And power of load of power stationP load Power of mutual aid between stationsP Δ The difference value of the power difference value is not equal to 0, and the inter-station mutual aid power transmitted by the upper master station is received; when the SOC of the energy storage battery is smaller than the charging and discharging depth of the energy storage batteryD ref And discharge confinementD discharge_threshold In sum, according to the demand targets of peak clipping and valley filling and emergency power protection, the energy storage battery is charged at the time of low price of electricity until the SOC of the charged electricity is equal to the charging constraintD charge_threshold ；
The system comprises a planning operation mode operation unit, a control unit and a control unit, wherein the planning operation mode operation unit is used for charging or discharging the energy storage battery through manual intervention according to the charge quantity SOC of the energy storage battery when the energy storage battery is in a planning operation mode; and a discharge instruction is issued through manual intervention in a special time period and an emergency scene, so that power supply is guaranteed.
The invention also provides a computer-readable storage medium, on which a computer program is stored which, when being executed by a processor, carries out the steps of the method of any one of the preceding claims.
The invention provides an energy storage optimization operation method and device for multiple scenes and multiple targets, which correspond to 4 operation scenes in 2 working modes, comprehensively consider various factors such as electricity price guide, battery body charge-discharge constraint, station power mutual-assistance requirement, peak clipping and valley filling, distributed power supply power generation, manual instruction intervention and the like, reasonably formulate an optimal energy storage operation strategy, can meet different requirements of different scenes on energy storage, realize efficient and flexible utilization of energy storage resources, and solve the problems that the operation strategy cannot be adjusted according to the requirements of actual occasions and the energy storage resources cannot be efficiently and flexibly utilized in the prior art.
Drawings
FIG. 1 is a schematic flow chart of an energy storage optimization operation method for multiple scenes and multiple targets according to the present invention;
FIG. 2 is a general schematic diagram of a multi-scenario multi-target energy storage optimization operation strategy related to the present invention;
FIG. 3 is a flow chart of an automatic mode of operation to which the present invention relates;
FIG. 4 is a flow chart of a scheduled mode of operation to which the present invention relates;
FIG. 5 is a schematic structural diagram of an energy storage optimization operation device for multiple scenes and multiple targets provided by the invention.
Detailed Description
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein.
Fig. 1 shows a flow chart of an energy storage optimization operation method for multiple scenarios and multiple targets, and the method provided by the embodiment of the invention is described in detail below with reference to fig. 1.
Step S101, obtaining operation modes of the energy storage battery, wherein the operation modes comprise an automatic operation mode and a planned operation mode.
As shown in the flow chart of the automatic operation mode shown in fig. 2, the energy storage optimization operation method of the multi-scene and multi-target provided by the invention comprises two working modes corresponding to 4 application scenes, wherein the two working modes are respectively the automatic operation mode and the planned operation mode, the automatic operation mode corresponds to a conventional operation scene, and the mode comprehensively considers various factors such as photovoltaic power generation power, platform load power, battery charge-discharge depth and electricity price guide and the like to formulate an optimal operation strategy. The plan operation mode comprises a manual intervention operation scene, a special time period power protection scene and an emergency power protection and supply scene, and an energy storage operation strategy under the manual intervention factor is mainly formulated. The following describes the specific operation principle of the two operation modes with reference to the drawings.
Step S102, when the energy storage battery is in an automatic operation mode, the energy storage batteryThe SOC of the charged state is larger than the charging constraintD charge_threshold Or the charge SOC of the energy storage battery in the discharging state is smaller than the discharging constraintD discharge_threshold And the energy storage battery stops charging or discharging, and the battery is in a standby state.
When the energy storage battery is in the automatic operation mode, a specific operation flow is as shown in fig. 3, and first, the following operation parameters are set:
charge/discharge restraint of energy storage cellsD charge_threshold ，D discharge_threshold ；
Obtaining the photovoltaic power generation power according to the historical data of the photovoltaic power generation power and the transformer area load power within 30 daysP PV Sum region load powerP load ；
According to the curve of the load power of the transformer area, under the condition of not considering the photovoltaic, setting the charging and discharging depth of the energy storage batteryD ref The depth of charge and discharge is required to satisfyD ref <D charge_threshold -D discharge_threshold ；
Power of mutual aid between stationsP Δ ；
Charging and discharging power of energy storage batteryP charge ，P discharge 。
Reference photovoltaic power generation powerP PV Sum region load powerP load The variation curve of (2) sets the inter-station mutual power of the whole day periodP Δ =P PV -P load And the photovoltaic local absorption and the inter-station power mutual-aid balance are realized. And when the actual photovoltaic power generation power and load power deviate from the predicted curve, the load demand cannot be met or the photovoltaic is consumed on the spot only by the mutual power between the power stations, the energy storage intervenes in the following mode:
when the energy storage battery is in an automatic operation mode, the energy storage battery is in a state of being operated in a standby modeP PV -P load -P Δ >0, determining that the energy storage battery works in a charging state and charging powerP charge =P PV -P load -P Δ ；
And when the charge SOC of the energy storage battery>D charge_threshold When the energy storage battery is in the standby state, the energy storage battery stops charging;
when in useP PV -P load -P Δ <0, determining that the energy storage battery works in a discharge state and discharge powerP discharge =P PV -P load -P Δ ；
And when the charge SOC of the energy storage battery<D discharge_threshold And when the energy storage battery is in the standby state, the energy storage battery stops discharging.
Step S103, when the energy storage battery is in a standby state of an automatic operation mode, photovoltaic power generation powerP PV And load power of cellP load Power of mutual aid between stationsP Δ The difference value of the power difference value is not equal to 0, and the inter-station mutual aid power transmitted by the upper master station is received; when the SOC of the energy storage battery is smaller than the charging and discharging depth of the energy storage batteryD ref And discharge confinementD discharge_threshold When the sum is over, according to the demand targets of peak clipping and valley filling and emergency power supply protection, the energy storage battery is charged at the low price of electricity until the SOC of the charged quantity is equal to the charging constraintD charge_threshold 。
When the energy storage battery is in the standby state of the automatic operation mode, the energy storage battery stops chargingP PV -P load -P Δ >0, or stopping discharge of energy storage batteryP PV -P load -P Δ <0, i.e.P PV -P load -P Δ Not equal to 0, receiving the inter-station mutual power issued by the superior master station to ensure thatP PV -P load -P Δ =0。
According to the demand targets of peak clipping and valley filling and emergency power protection, the charge SOC of the energy storage battery needs to be kept at SOC>D ref +D discharge_threshold Considering the electricity price guide, in the low valley of the electricity price,at a preset charging start-stop time t 1 、t 2 Charging the energy storage battery according to the charge quantity of the energy storage battery within the time range, and when the charge quantity SOC of the energy storage battery is =D charge_threshold And when the energy storage battery is charged, the energy storage battery stops charging.
Step S104, when the energy storage battery is in a planned operation mode, the energy storage battery is charged or discharged through manual intervention according to the charge quantity SOC of the energy storage battery; and a discharge instruction is issued through manual intervention in a special time period and an emergency scene, so that power supply is ensured.
When the energy storage battery is in the planned operation mode, the specific operation flow is shown in fig. 4, and the planned operation mode includes three operation fields, which are respectively: the method comprises the following steps of manually intervening an operation scene, a special time period power protection scene and an emergency power protection and supply scene.
The first scenario is: manual intervention operation scene
When the superior master station issues a charging or discharging control instructionP bat When the energy storage battery enters a manual intervention operation state, if the energy storage battery enters the manual intervention operation stateD discharge_threshold <SOC<D charge_threshold In time, the stored energy runs according to a power instruction given by the master station; when SOC is reached>D charge_threshold Or SOC< D discharge_threshold When the energy storage battery is charged or discharged, the energy storage battery enters a standby state; the energy storage battery is in a standby state if the SOC is not the same<D ref +D discharge_threshold And when the electricity price is in the low valley period, the energy storage battery works in a charging state until the SOC = D charge_threshold And when the energy storage battery is charged, the energy storage battery stops charging.
The second scenario is: special time period power-saving scene
Setting the starting and stopping time t of the special time interval power protection 3 、t 4 And discharge command of energy storage batteryP bat During a special time period power-preserving scene, the energy storage battery works in a discharging state when the SOC is< D discharge_threshold When the energy storage battery is in a standby state, the energy storage battery stops discharging; the energy storage battery is in a standby state when the SOC is<D ref +D discharge_threshold And when the electricity price is in the low valley period, the energy storage battery works in a charging state until the SOC = D charge_threshold And when the energy storage battery is charged, the energy storage battery stops charging.
The third scenario is: emergency power supply protection scene
Emergency discharge instruction for setting energy storage batteryP bat During the operation of the emergency power-saving and supplying scene, the energy storage battery works in a discharging state, but when the SOC is in the state of being charged< D discharge_threshold When the energy storage battery is in a standby state, the energy storage battery stops discharging;
the energy storage battery is in standby state, but when SOC is<D ref +D discharge_threshold And when the electricity price is in the off-peak period, the energy storage battery works in a charging state until the SOC = D charge_threshold And when the energy storage battery is charged, the energy storage battery stops charging.
Based on the same inventive concept, the invention also provides an energy storage optimization operation apparatus 500 for multiple scenes and multiple targets, as shown in fig. 5, comprising:
an operation mode obtaining unit 510, configured to obtain operation modes of the energy storage battery, where the operation modes include an automatic operation mode and a planned operation mode;
a first automatic mode operation unit 520, configured to, when the energy storage battery is in the automatic operation mode, enable the SOC of the energy storage battery in the charging state to be greater than the charging constraintD charge_threshold Or the charge SOC of the energy storage battery in the discharging state is smaller than the discharging constraintD discharge_threshold The energy storage battery stops charging or discharging, and the battery is in a standby state;
a second automatic mode operation unit 530 for operating the photovoltaic power generation when the energy storage battery is in a standby state of the automatic operation modeP PV And load power of cellP load Power of mutual aid between stationsP Δ The difference value of the power difference value is not equal to 0, and the inter-station mutual aid power transmitted by the upper master station is received; when the SOC of the energy storage battery is smaller than the charging and discharging depth of the energy storage batteryD ref And confinement of dischargeD discharge_threshold In sum, according to the demand targets of peak clipping and valley filling and emergency power protection, the energy storage battery is charged at the time of low price of electricity until the SOC of the charged electricity is equal to the charging constraintD charge_threshold ；
A planned operation mode operation unit 540, configured to charge or discharge the energy storage battery through manual intervention according to a charge amount SOC of the energy storage battery when the energy storage battery is in a planned operation mode; and a discharge instruction is issued through manual intervention in a special time period and an emergency scene, so that power supply is guaranteed.
The invention provides an energy storage optimization operation method and device for multiple scenes and multiple targets, which correspond to 4 operation scenes in 2 working modes, comprehensively consider various factors such as electricity price guide, battery body charge-discharge constraint, station power mutual-assistance requirement, peak clipping and valley filling, distributed power supply power generation, manual instruction intervention and the like, reasonably formulate an optimal energy storage operation strategy, can meet different requirements of different scenes on energy storage, realize efficient and flexible utilization of energy storage resources, and solve the problems that the operation strategy cannot be adjusted according to the requirements of actual occasions and the energy storage resources cannot be efficiently and flexibly utilized in the prior art.
As will be appreciated by one skilled in the art, embodiments of the present invention may be provided as a method, system, or computer program product. Accordingly, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present invention may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.
The present invention is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the invention. It will be understood that each flow and/or block of the flowchart illustrations and/or block diagrams, and combinations of flows and/or blocks in the flowchart illustrations and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that various changes may be made and equivalents may be substituted for elements thereof without departing from the spirit and scope of the invention.
Claims (11)
1. An energy storage optimization operation method for multiple scenes and multiple targets is characterized by comprising the following steps:
acquiring an operation mode of an energy storage battery, wherein the operation mode comprises an automatic operation mode and a planned operation mode;
when the energy storage battery is in the automatic operation mode, the SOC of the energy storage battery in the charging state is greater than the charging constraintD charge_threshold Or the SOC of the energy storage battery in the discharging state is smaller than the discharging constraintD discharge_threshold The energy storage battery stops charging or discharging, and the energy storage battery is in a standby state;
when the energy storage battery is in a standby state of an automatic operation mode, the photovoltaic power generation power is generatedP PV And power of load of power stationP load Power of mutual aid between stationsP Δ The difference value of the power difference value is not equal to 0, and inter-station mutual aid power transmitted by the superior master station is received; when the SOC of the energy storage battery is smaller than the charging and discharging depth of the energy storage batteryD ref And discharge confinementD discharge_threshold In sum, according to the demand targets of peak clipping and valley filling and emergency power protection, the energy storage battery is charged at the time of low price of electricity until the SOC of the charged electricity is equal to the charging constraintD charge_threshold ；
When the energy storage battery is in a planned operation mode, the energy storage battery is charged or discharged through manual intervention according to the charge quantity SOC of the energy storage battery; and a discharge instruction is issued through manual intervention in a special time period and an emergency scene, so that power supply is guaranteed.
2. The method of claim 1, wherein the energy storage battery is in an automatic operation mode when the energy storage battery is in an automatic operation modeP PV -P load -P Δ >0, determining that the energy storage battery works in a charging state and charging powerP charge =P PV -P load -P Δ ；
When in useP PV -P load -P Δ <0, determining that the energy storage battery works in a discharge state and discharge powerP discharge =P PV -P load -P Δ 。
3. The method of claim 1, wherein the photovoltaic power generation is performed as photovoltaic power generationP PV And load power of cellP load Mutual aid between the two stationsRate of changeP Δ The difference is not equal to 0, receiving the inter-station mutual aid power issued by the superior master station, comprising:
when in useP PV -P load -P Δ >0, orP PV -P load -P Δ <0, receiving the inter-station mutual power transmitted by the superior master station to enable the superior master station to transmit the inter-station mutual powerP PV -P load -P Δ =0。
4. The method of claim 1, wherein the SOC of the energy storage battery is less than the charging/discharging depth of the energy storage batteryD ref And discharge confinementD discharge_threshold When the sum is obtained, according to the demand targets of peak clipping, valley filling and emergency power protection, after the step of charging the energy storage battery when the electricity price is low, the method further comprises the following steps: when the charge SOC of the energy storage battery is =D charge_threshold And when the energy storage battery is charged, the energy storage battery stops charging.
5. The method of claim 4, further comprising:
according to the demand targets of peak clipping and valley filling and emergency power protection, the charge SOC of the energy storage battery needs to be kept at SOC>D ref +D discharge_threshold At the time of low price, at the preset charge starting and stopping time t 1 、t 2 In the time range of (3), the energy storage battery is charged according to the charge quantity of the energy storage battery.
6. The method of claim 1, wherein the energy storage battery is in a scheduled mode of operation comprising: the method comprises the following steps of manually intervening an operation scene, a special time period power protection scene and an emergency power protection and supply scene.
7. The method of claim 6, wherein the charging or discharging control command is issued by the upper level master stationP bat When the energy storage battery enters a manual intervention operation scene, if the energy storage battery enters the manual intervention operation sceneD discharge_threshold <SOC<D charge_threshold In time, the energy storage battery operates according to a power instruction issued by the main station;
when SOC is reached>D charge_threshold Or SOC< D discharge_threshold When the energy storage battery is charged or discharged, the energy storage battery enters a standby state;
the energy storage battery is in a standby state if the SOC is not equal to the reference voltage<D ref +D discharge_threshold And when the electricity price is in the off-peak period, the energy storage battery works in a charging state until the SOC = D charge_threshold And when the energy storage battery is charged, the energy storage battery stops charging.
8. The method according to claim 6, wherein when the energy storage battery is in a special time-period power-preserving scene, the starting and ending time t of the special time-period power-preserving is set 3 、t 4 And discharge command of energy storage batteryP bat The energy storage battery works in a discharge state when the SOC is< D discharge_threshold When the energy storage battery is in the standby state, the energy storage battery stops discharging;
the energy storage battery is in a standby state when the SOC is<D ref +D discharge_threshold And when the electricity price is in the low valley period, the energy storage battery works in a charging state until the SOC = D charge_threshold And when the energy storage battery is charged, the energy storage battery stops charging.
9. The method of claim 6, wherein setting the emergency discharge command of the energy storage battery when the energy storage battery is in the emergency protection power sceneP bat When the SOC is< D discharge_threshold When the energy storage battery is in a standby state, the energy storage battery stops discharging;
the energy storage battery is in a standby state when the SOC is<D ref +D discharge_threshold And when the electricity price is in the low valley period, the energy storage battery works in a charging state until the SOC = D charge_threshold And when the energy storage battery is charged, the energy storage battery stops charging.
10. An energy storage optimization operation device for multiple scenes and multiple targets is characterized by comprising the following components:
the operation mode acquisition unit is used for acquiring operation modes of the energy storage battery, and the operation modes comprise an automatic operation mode and a planned operation mode;
a first automatic mode operation unit for enabling the SOC of the energy storage battery in a charging state to be larger than a charging constraint when the energy storage battery is in an automatic operation modeD charge_threshold Or the charge SOC of the energy storage battery in the discharging state is smaller than the discharging constraintD discharge_threshold The energy storage battery stops charging or discharging, and the energy storage battery is in a standby state;
a second automatic mode operation unit for operating the photovoltaic power generation power when the energy storage battery is in the standby state of the automatic operation modeP PV And power of load of power stationP load Power of mutual aid between stationsP Δ The difference value of the power difference value is not equal to 0, and the inter-station mutual aid power transmitted by the upper master station is received; when the SOC of the energy storage battery is smaller than the charging and discharging depth of the energy storage batteryD ref And confinement of dischargeD discharge_threshold In sum, according to the demand targets of peak clipping and valley filling and emergency power protection, the energy storage battery is charged at the time of low price of electricity until the SOC of the charged electricity is equal to the charging constraintD charge_threshold ；
The planning operation mode operation unit is used for charging or discharging the energy storage battery through manual intervention according to the charge capacity SOC of the energy storage battery when the energy storage battery is in the planning operation mode; and a discharge instruction is issued through manual intervention in a special time period and an emergency scene, so that power supply is ensured.
11. A computer-readable storage medium, on which a computer program is stored which, when being executed by a processor, carries out the steps of the method according to any one of claims 1 to 9.
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