CN116316767A - Network side power management control method and device for optical storage system - Google Patents
Network side power management control method and device for optical storage system Download PDFInfo
- Publication number
- CN116316767A CN116316767A CN202310510977.7A CN202310510977A CN116316767A CN 116316767 A CN116316767 A CN 116316767A CN 202310510977 A CN202310510977 A CN 202310510977A CN 116316767 A CN116316767 A CN 116316767A
- Authority
- CN
- China
- Prior art keywords
- power
- electricity
- buying
- selling
- storage system
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Classifications
-
- 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
-
- 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
- H02J3/007—Arrangements for selectively connecting the load or loads to one or several among a plurality of power lines or power sources
- H02J3/0075—Arrangements for selectively connecting the load or loads to one or several among a plurality of power lines or power sources for providing alternative feeding paths between load and source according to economic or energy efficiency considerations, e.g. economic dispatch
-
- 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
- H02J3/008—Circuit arrangements for ac mains or ac distribution networks involving trading of energy or energy transmission rights
-
- 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
-
- 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
- H02J2203/00—Indexing scheme relating to details of circuit arrangements for AC mains or AC distribution networks
- H02J2203/10—Power transmission or distribution systems management focussing at grid-level, e.g. load flow analysis, node profile computation, meshed network optimisation, active network management or spinning reserve management
-
- 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
- H02J2203/00—Indexing scheme relating to details of circuit arrangements for AC mains or AC distribution networks
- H02J2203/20—Simulating, e g planning, reliability check, modelling or computer assisted design [CAD]
-
- 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
- H02J2300/28—The renewable source being wind energy
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
- Supply And Distribution Of Alternating Current (AREA)
Abstract
The invention discloses a network side power management control method and a device for an optical storage system, wherein the control method comprises the following steps: acquiring preset parameters, wherein the preset parameters comprise electricity buying SOC, electricity selling SOC, electricity buying power, electricity selling power, electricity buying time period and electricity selling time period; acquiring acquisition data, wherein the acquisition data comprise battery SOC, ammeter power, output power of an optical storage inverter and local time; and controlling the output power of the light storage inverter according to the preset parameters and the acquired data, so that the power of the electric meter is equal to the electricity buying power or the electricity selling power, and executing electricity buying or electricity selling. According to the network side power management control method of the optical storage system and the device applying the control method, the judgment is carried out from three dimensions of time, battery SOC and network side power, so that the optical storage system can perform electricity buying or selling operation at a proper time, the efficient operation of the optical storage system under the condition of low configuration cost is ensured, and the effective utilization and support of a power grid are realized.
Description
Technical Field
The invention relates to the technical field of photovoltaic energy storage, in particular to a network side power management control method and device of an optical storage system.
Background
The photovoltaic energy storage system, also called a solar photovoltaic energy storage power generation system, is a new energy power generation system consisting of photovoltaic equipment and batteries, and is widely applied under the promotion of global carbon emission reduction measures.
In the past, due to the problems of instability of solar power generation and wind power generation, high cost of an energy storage system and the like, the application of a household optical storage system is limited, but along with the development of technology and the reduction of cost, more and more people select to use the optical storage system to supply power for household electric loads, on one hand, the application of the household optical storage system can reduce the dependence of a user on electric power of a power grid, realize self-sufficiency of household electricity, reduce the household electricity cost, and when the power supply of the power grid is interrupted due to factors such as serious disasters and the like, the optical storage system can also provide emergency power supply to avoid the influence of power failure on life; on the other hand, for the power grid, the application of the household light storage system can reduce the electricity demand of the user on the power grid, so that the electricity tension problem in peak hours is relieved.
With the deep development of a household light storage system and the proposal of a smart grid concept, the demand on household electricity is higher and higher, however, when the current light storage system is used, the light storage inverter can correspondingly adjust the output power of a storage battery only according to the demand of household loads, so that the output power of the light storage inverter and the load power are balanced, and the power supply to the loads is realized, but the scheme needs to be provided with a photovoltaic panel with larger capacity and an energy storage battery to ensure that enough electric energy is stored for continuously supplying power to the loads, and has higher cost; and the optical storage system can not buy and sell electricity according to the step rate electricity price system and the time-of-use electricity price system, and has lower operation efficiency, and can not realize effective utilization and support of the power grid.
Disclosure of Invention
In order to reduce the configuration cost of an optical storage system and improve the operation efficiency of the optical storage system, the application provides a network side power management control method and device of the optical storage system.
In a first aspect, the present application provides a method for controlling network-side power management of an optical storage system, which adopts the following technical scheme: the optical storage system comprises an optical storage inverter, a battery and an ammeter, and the network side power management control method of the optical storage system comprises the following steps:
step S100, obtaining preset parameters, wherein the preset parameters comprise power buying SOC, power selling SOC, power buying power, power selling power, power buying period and power selling period;
step S200, acquiring acquisition data, wherein the acquisition data comprise battery SOC, ammeter power, output power of an optical storage inverter and local time;
step S300, controlling the output power of the light storage inverter according to the preset parameters and the acquired data, enabling the power of the ammeter to be equal to the buying power, and executing buying power operation; or controlling the output power of the light storage inverter according to the preset parameters and the acquired data so that the power of the ammeter is equal to the selling power, and executing selling power operation;
the step S300 specifically includes the following steps:
step S310, judging whether the local time is in a power buying period, if so, entering step S320; if the local time is not in the power buying period, step S330 is entered;
step S320, judging whether the battery SOC is smaller than the buying power SOC, if so, controlling the output power of the light storage inverter to enable the power of the electric meter to be equal to the buying power, and executing buying power operation; if the battery SOC is more than or equal to the buying SOC, ending the flow;
step S330, judging whether the local time is in a power selling period, if so, entering step S340; if the local time is not in the electricity selling period, ending the flow;
step S340, judging whether the battery SOC is larger than the selling SOC, if so, controlling the output power of the light storage inverter to enable the power of the ammeter to be equal to the selling power, and executing selling electric operation; and if the battery SOC is smaller than or equal to the electricity selling SOC, ending the flow.
By adopting the technical scheme, the intelligent judgment is carried out from three dimensions of time, battery SOC and network side power, the output power of the light storage inverter is regulated, and then the interaction power of the light storage system and the public power grid is regulated, so that the light storage system can buy or sell electricity at a proper time, the efficient operation of the light storage system is ensured by matching with the public power grid under the condition of low-cost configuration of a lower number of photovoltaic panels and energy storage batteries with smaller capacity, and the effective utilization and support of the power grid are realized.
In a specific embodiment, before the performing the electricity buying action or the electricity selling action according to the preset parameters and the collected data, the method further includes the following steps: dynamically adjusting one or more of the preset parameters according to the date type and/or special event corresponding to the local time; the date type includes: workdays, weekends and legal holidays; the special events include: and (5) notifying power failure and notifying the public power grid of time-period power supply.
By adopting the technical scheme, when the optical storage system is different in date type or special events occur, the preset parameters are dynamically adjusted, so that the optical storage system can conduct targeted processing on different conditions, the use requirement is better met, and the operation efficiency is further improved.
In a specific embodiment, before the performing the electricity buying action or the electricity selling action according to the preset parameters and the collected data, the method further includes the following steps: obtaining the load condition of each period according to the historical electricity consumption data, and dynamically adjusting one or more of the preset parameters according to the load condition of each period; the load conditions include a load high power state and a load low power state.
By adopting the technical scheme, the optical storage system dynamically adjusts preset parameters according to different load electricity consumption conditions of each period, so that the optical storage system can conduct targeted treatment on different conditions, the use requirement is better met, and the running efficiency is further improved.
In a specific embodiment, before the preset parameters are obtained, the method further includes the following steps: dividing a time period with low local electricity price into a low electricity price time period according to a time-sharing electricity price system, dividing a time period with high local electricity price into a high electricity price time period, presetting parameters of a buying time period according to the low electricity price time period, and presetting parameters of a selling time period according to the high electricity price time period.
By adopting the technical scheme, when the electricity buying period and the electricity selling period are set, the local step rate electricity price is referred, so that the optical storage system can manage and distribute electricity buying and selling according to the step rate electricity price, the low electricity price period is ensured when electricity buying operation is carried out, the high electricity price period is ensured when electricity selling operation is carried out, the user is helped to reduce the electricity fee, the operation effect of the optical storage system is optimal, and the effective utilization and support of a public power grid are realized.
In a specific embodiment, before the preset parameters are obtained, the method further includes the following steps:
presetting parameters of a buying electricity SOC and parameters of a selling electricity SOC according to the actual capacity of a battery and environmental factors; the environmental factors comprise environmental temperature, environmental humidity, sunlight intensity and sunlight duration;
acquiring a capacity margin corresponding to a battery type, and presetting parameters of buying electric power and parameters of selling electric power according to the capacity margin;
and presetting parameters of buying electric power and parameters of selling electric power according to the stepped rate electric power price system.
By adopting the technical scheme, the parameters can be set more reasonably by referring to the actual capacity of the battery and environmental factors; the parameters of buying electric power and selling electric power are preset according to different capacity margins corresponding to different battery types, so that damage caused by over-charging or over-discharging of the battery due to overlarge setting of the parameters of buying electric power and selling electric power is avoided; the parameters of buying electric power and the parameters of selling electric power are preset according to the stepped rate electric power price system, so that the unit price is cheapest and the cost of buying electric power is most effective when a user buys electric power, and the unit price is most expensive and the income of selling electric power is most beneficial when the user sells electric power.
In a specific implementation manner, the light storage system further comprises a switch, wherein the switch is used for controlling the interaction state of the light storage system and a public power grid so that the light storage system can operate in a grid-connected state or an off-grid state, and the switch is an external specific switch or an internal switch network of the light storage inverter.
In a second aspect, the present application provides a network side power management control device of an optical storage system, which adopts the following technical scheme: the optical storage system network side power management control device adopts the optical storage system network side power management control method, and the optical storage system network side power management control device comprises:
the power supply system comprises a preset parameter acquisition unit, a power supply control unit and a power supply control unit, wherein the preset parameter acquisition unit is used for acquiring preset parameters, and the preset parameters comprise power supply SOC, power supply time period and power supply time period;
the system comprises an acquisition data acquisition unit, a control unit and a control unit, wherein the acquisition data acquisition unit is used for acquiring acquisition data, and the acquisition data comprise battery SOC, ammeter power, light storage inverter output power and local time;
the logic control unit is used for controlling the output power of the light storage inverter according to the preset parameters and the acquired data so that the power of the ammeter is equal to the buying power, and executing buying power operation; or controlling the output power of the light storage inverter so that the electricity meter power is equal to the selling power, and executing the selling power operation.
Through adopting above-mentioned technical scheme, the intelligent judgement is carried out from time, battery SOC, three dimension of net side power to optical storage system net side power management controlling means, adjusts optical storage inverter output, and then adjusts optical storage system and public electric wire netting interactive power, makes optical storage system buy the electricity or sell the electricity operation in suitable opportunity, has realized under the low-cost configuration condition of the energy storage battery of lower quantity photovoltaic panel and less capacity, cooperates public electric wire netting to have guaranteed optical storage system's high-efficient operation, has realized the effective utilization and the support to the electric wire netting.
In a third aspect, the present application provides a terminal, which adopts the following technical scheme: the terminal comprises: a processor, a memory, and a communication bus; the communication bus is used for realizing connection communication between the processor and the memory, and the processor is used for executing one or more programs stored in the memory so as to realize the steps of the network side power management control method of the optical storage system.
By adopting the technical scheme, the terminal intelligently judges from three dimensions of time, battery SOC and network side power, adjusts the output power of the light storage inverter, and further adjusts the interaction power of the light storage system and the public power grid, so that the light storage system performs electricity buying or selling operation at a proper time, and the light storage system is matched with the public power grid to ensure the efficient operation of the light storage system under the condition of low-cost configuration of a low-number photovoltaic panels and low-capacity energy storage batteries, thereby realizing the effective utilization and support of the power grid.
In a fourth aspect, the present application provides a computer readable storage medium, which adopts the following technical scheme: the computer readable storage medium stores instructions that, when executed, perform the steps of the optical storage system network side power management control method described above.
By adopting the technical scheme, the computer readable storage medium intelligently judges from three dimensions of time, battery SOC and network side power, adjusts the output power of the light storage inverter, and further adjusts the interaction power of the light storage system and the public power grid, so that the light storage system performs electricity buying or selling operation at a proper time, and the light storage system is matched with the public power grid to ensure the efficient operation of the light storage system under the condition of low-cost configuration of a low-number photovoltaic panels and low-capacity energy storage batteries, thereby realizing the effective utilization and support of the power grid.
In summary, the technical scheme of the application at least comprises the following beneficial technical effects:
1. the intelligent judgment is carried out from three dimensions of time, battery SOC and grid side power, the output power of the optical storage inverter is regulated, and then the interaction power of the optical storage system and the public power grid is regulated, so that the optical storage system performs electricity buying or selling operation at a proper time, and the efficient operation of the optical storage system is ensured by matching with the public power grid under the condition of low-cost configuration of a lower number of photovoltaic panels and energy storage batteries with smaller capacity, and the effective utilization and support of the power grid are realized;
2. aiming at different conditions of date type, special event and historical electricity data, the preset parameters are dynamically adjusted, so that the light storage system can better meet the use requirement, and the operation efficiency of the light storage system is further improved.
Drawings
FIG. 1 is a schematic diagram of the overall structure of an optical storage system according to an embodiment of the present application;
FIG. 2 is a flowchart illustrating the overall steps of a method for controlling network-side power management of an optical storage system according to an embodiment of the present application;
fig. 3 is a flowchart of a step of specifically executing a buy-electricity or sell-electricity action according to preset parameters and collected data in an embodiment of the present application.
Reference numerals illustrate:
1. a light storage inverter; 11. a DC/DC converter; 12. a bidirectional DC/DC converter; 13. a DC/AC converter; 2. a battery; 3. an electricity meter; 4. a photovoltaic panel; 5. a load; 6. and (3) a switch.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the present application more apparent, the embodiments of the present application will be described in further detail below with reference to the accompanying drawings.
Example 1
The embodiment discloses a network side power management control method of a light storage system, which is used for network side power management of the light storage system, the light storage system comprises a light storage inverter 1, a battery 2, an electric meter 3, a photovoltaic panel 4, a load 5 and a switch 6, referring to fig. 1, the light storage inverter 1 is respectively connected with the battery 2 and the photovoltaic panel 4, the light storage inverter 1 is also connected with the electric meter 3 and the load 5 through the switch 6, the electric meter 3 is also connected with a public power grid, and the light storage inverter 1 comprises a DC/DC converter 11, a bidirectional DC/DC converter 12 and a DC/AC converter 13.
With continued reference to fig. 1, the logic control module receives the electricity buying SOC, the electricity selling SOC, the electricity buying power, the electricity selling power, the electricity buying period, the electricity selling period data, and the battery SOC, the electricity meter power, the output power of the light storage inverter, and the local time data in the data acquisition module, and analyzes and processes the received data, and outputs the electricity buying or selling control signal to the DC/AC converter 13 in the light storage inverter, thereby realizing the electricity buying or selling operation. The SOC is referred to as State of Charge, and may be specifically the remaining battery power.
The process of supplying power to the load by the user through the light storage system is as follows: the photovoltaic panel 4 generates electricity, the light storage inverter 1 converts direct current generated by the photovoltaic panel 4 into alternating current to supply power for the load 5, the light storage inverter 1 can store electric energy generated by the photovoltaic panel 4 into the battery 2, and when the load 5 needs to be powered by the load 5, the electric energy stored by the battery 2 is converted into alternating current to supply power for the load 5.
Particularly, by the network side power management control method of the optical storage system, under the condition that the electric quantity of the optical storage system is sufficient, electric energy in the optical storage system can be sold to a public power grid, and electric selling operation is performed; and under the condition that the electric quantity of the optical storage system is insufficient, buying electricity from a public power grid, and executing electricity buying action.
The power of the load 5 is determined by the use condition of consumer electric equipment, the output power of the optical storage inverter 1 subtracted by the power of the load 5 is equal to the power of the electric meter 3, the power of the electric meter 3 is the interaction power of the optical storage system and the public power grid, the interaction state of the optical storage system and the public power grid is represented, the power of the electric meter 3 is positive and represents the power of the optical storage system for absorbing electric energy from the public power grid, the power of the electric meter 3 is negative and represents the power of the optical storage system for outputting electric energy to the public power grid, for example, if the power of the electric meter 3 is +10W, the power of the optical storage system for absorbing electric energy from the public power grid is 10W, namely, the optical storage system for buying electric energy from the public power grid is 10W; if the power of the electricity meter 3 is-5W, the power of the electric energy output by the optical storage system to the public power grid is 5W, namely, the optical storage system sells 5W to the public power grid.
Therefore, referring to fig. 2, the network side power management control method of the optical storage system of the present embodiment includes the following steps:
step S100, obtaining preset parameters, wherein the preset parameters comprise power buying SOC, power selling SOC, power buying power, power selling power, power buying period and power selling period.
The electricity buying SOC represents a battery remaining capacity parameter value when the light storage system can execute electricity buying operation, the electricity selling SOC represents a battery remaining capacity parameter value when the light storage system can execute electricity selling operation, the electricity buying power represents an electricity buying power value from a public power grid when the light storage system executes electricity buying operation, the electricity selling power value is sold to the public power grid when the light storage system executes electricity selling operation, the electricity buying period represents a period of time when the light storage system can execute electricity buying operation, and the electricity selling period represents a period of time when the light storage system can execute electricity selling operation.
Step S200, acquiring acquisition data, wherein the acquisition data comprise battery SOC, ammeter power, light storage inverter output power and local time.
Wherein, the battery SOC represents the battery remaining power parameter value.
Step S300, controlling the output power of the light storage inverter according to the preset parameters and the acquired data, so that the power of the ammeter is equal to the buying power, and executing buying power operation; or controlling the output power of the light storage inverter according to the preset parameters and the acquired data so that the power of the electric meter is equal to the selling power, and executing selling power.
Further, referring to fig. 3, the step S300 specifically includes the following steps:
step S310, judging whether the local time is in a power buying period, if so, entering step S320; if the local time is not in the power buying period, step S330 is entered.
Step S320, judging whether the battery SOC is smaller than the buying power SOC, if so, controlling the output power of the light storage inverter to enable the power of the electric meter to be equal to the buying power, and executing buying power operation; and if the battery SOC is more than or equal to the electricity buying SOC, ending the flow.
Step S330, judging whether the local time is in a power selling period, if so, entering step S340; and if the local time is not in the electricity selling period, ending the flow.
Step S340, judging whether the battery SOC is larger than the selling SOC, if so, controlling the output power of the light storage inverter to enable the power of the ammeter to be equal to the selling power, and executing selling electric operation; and if the battery SOC is smaller than or equal to the electricity selling SOC, ending the flow.
Through the steps S310 to S340, when the local time is in the power buying period and the battery SOC is smaller than the power buying SOC, it is indicated that the local time is in the power buying period and the battery remaining power is smaller, so that the output power of the light storage inverter is controlled to execute the power buying operation; when the local time is in the power selling period and the battery SOC is larger than the power selling SOC, the situation that the local time is in the power selling period and the battery residual quantity is large is indicated, so that the output power of the light storage inverter is controlled, and the power selling operation is executed.
Therefore, the network side power management control method of the optical storage system adjusts the output power of the optical storage inverter by intelligently judging from three dimensions of time, battery SOC and network side power, so as to adjust the interaction power of the optical storage system and a public power grid, so that the optical storage system performs electricity buying or selling operation at a proper time, the efficient operation of the optical storage system is ensured by matching with the public power grid under the condition of low-cost configuration of a lower number of photovoltaic panels and energy storage batteries with smaller capacity, the effective utilization and support of the power grid are realized, and meanwhile, the cost of acquiring electric energy from the public power grid by a user can be reduced.
Further, before executing the electricity buying operation or the electricity selling operation according to the preset parameters and the collected data in step S300, the method may further include the following steps:
dynamically adjusting one or more of the preset parameters according to the date type and/or special event corresponding to the local time; the date type includes: workdays, weekends and legal holidays; the special events include: and (5) notifying power failure and notifying the public power grid of time-period power supply.
The preset parameters are parameters of electricity buying SOC, electricity selling SOC, electricity buying power, electricity selling power, electricity buying period and electricity selling period.
The date types corresponding to the local time can be weekdays, weekends and legal holidays, and the power consumption load of a common household is less during the weekdays, so that the power consumption of the weekdays is at a normal level, and the power consumption load is more during the weekends and the holidays, and the power consumption is more than during the weekends and the holidays, so that in order to cope with the situation that the power consumption of the weekends and the holidays is more, the following specific ways can be adopted for adjusting the preset parameters: the parameters of the buying electricity SOC, the selling electricity SOC, the buying electricity power, the selling electricity time period and the selling electricity time period are increased, any one parameter can be selected from the six preset parameters to be adjusted for adjustment, any combination of a plurality of parameters can be selected for adjustment, six parameters can be selected for simultaneous adjustment, the optical storage system can better meet the use requirement through adjustment of the parameters, the operation efficiency of the optical storage system is improved, and the effects brought after adjustment of the parameters are as follows:
increasing parameters of the buying electricity SOC: because the electricity buying action can be executed when the residual electric quantity of the battery is lower than the set electricity buying SOC parameter value, after the electricity buying SOC parameter is increased, electricity buying operation can be executed when the residual electric quantity of the battery is not very low, the battery is ensured to always store enough electric quantity, and the requirements of larger electric quantity for loads on weekends and holidays are better met.
Parameters to increase the power-on SOC: because the power selling operation can be executed when the residual battery power is higher than the set power selling SOC parameter value, after the power selling SOC parameter is increased, the standard of the battery power when the power selling operation is executed is improved, the power selling operation can be executed when the residual battery power is very sufficient, and the need that the power consumption of the load is large in the weekend and holiday can not be supplied after the power stored by the battery is sold is avoided.
Similarly, after the parameters of the buying electric power are increased, more electric energy can be purchased from the public power grid when the buying electric operation is executed, so that the battery stores enough electric quantity; after the parameters of the selling power are reduced, less electric energy can be sold to the public power grid when the selling power operation is executed, and enough electric quantity is always stored in the battery, so that the electricity buying period and the electricity selling period are adjusted, the electricity buying period is prolonged during weekends and holidays, and the electricity selling period is shortened, and the requirements of larger electric quantity for loads on weekends and holidays are met.
When special events occur, such as the condition that the line of the public power grid is aged and needs to be maintained, a power failure notification can be sent to a user in advance; for example, since the public power grid needs to limit the amount of power supplied to the user in a certain period of time, a time-division power supply notification can be sent to the user in advance, and in order to cope with such special events, the optical storage system can still store enough electric quantity in a mode of adjusting preset parameters, so that in order to improve the electric quantity stored in the optical storage system, the specific adjustment mode of each parameter can refer to the above description of adjusting the parameter according to the date type, and will not be repeated here.
Further, before executing the electricity buying operation or the electricity selling operation according to the preset parameters and the collected data in step S300, the method may further include the following steps:
obtaining the load condition of each period according to the historical electricity consumption data, and dynamically adjusting one or more of the preset parameters according to the load condition of each period; the load conditions include a load high power state and a load low power state.
The load conditions of each period can be obtained according to the historical electricity consumption data, the condition of more electricity consumption of the load is divided into a high-electricity consumption state of the load, the condition of less electricity consumption of the load is divided into a low-electricity consumption state of the load, and the following modes can be adopted for adjusting parameters in the high-electricity consumption state of the load: the parameters of the buying power SOC, the selling power, the buying power period and the selling power period are increased, and the parameters of the selling power period are shortened, namely the parameters are adjusted at the moment to ensure that the battery stores enough electric quantity.
The following method can be adopted for adjusting the parameters in the low-power-consumption state of the load: the parameters of buying electricity SOC, selling electricity power, selling electricity time period and selling electricity time period are reduced, and the parameters are adjusted at the moment to properly reduce the electric quantity stored in the battery.
Therefore, the preset parameters are dynamically adjusted according to the date type, the special event and the historical electricity consumption data, so that the light storage system can conduct targeted processing on different conditions, the use requirement is better met, and the operation efficiency is further improved.
Furthermore, the network side power management control method of the optical storage system of the embodiment can adjust parameters by comprehensively considering the date type and the special event, can adjust parameters by comprehensively considering the date type and the historical data, can adjust parameters by comprehensively considering the special event and the historical data, and can adjust parameters by comprehensively considering three factors of the date type, the special event and the historical data.
Further, before the step S100 of obtaining the preset parameters, the method further includes the following steps: dividing a time period with low local electricity price into a low electricity price time period according to a time-sharing electricity price system, dividing a time period with high local electricity price into a high electricity price time period, presetting parameters of a buying time period according to the low electricity price time period, and presetting parameters of a selling time period according to the high electricity price time period.
The local time-sharing electricity price system is referred when the electricity buying period and the electricity selling period are set, so that the electricity buying operation is ensured to be in a low electricity price period, and the electricity selling operation is ensured to be in a high electricity price period, thereby helping a user to reduce the electricity charge, ensuring the optimal operation effect of the optical storage system and realizing the effective utilization and support of a public power grid.
Further, before the step S100 of obtaining the preset parameters, the method further includes the following steps: presetting parameters of a buying power SOC and parameters of a selling power SOC according to the actual capacity of a battery and environmental factors, wherein the environmental factors comprise environmental temperature, environmental humidity, sunlight intensity and sunlight duration;
acquiring a capacity margin corresponding to a battery type, and presetting parameters of buying electric power and parameters of selling electric power according to the capacity margin;
and presetting parameters of buying electric power and parameters of selling electric power according to the stepped rate electric power price system.
The parameters of the buying and selling SOCs are used for setting the range of the electric quantity stored in the battery, and ensuring that some capacity is reserved in the battery for scheduling the power consumption requirements of loads or other conditions.
In the use process of the battery, as the use time is longer, the actual capacity of the battery is correspondingly reduced, and parameters of the buying power SOC and parameters of the selling power SOC are preset, so that the parameters can be set more reasonably by referring to the actual capacity of the battery. In addition, at different geographic positions, the ambient temperature, the ambient humidity, the sunlight intensity and the sunlight duration can be different, the ambient temperature and the ambient humidity can influence the charge and discharge speed, the actual capacity, the service life and the like of the battery, and the sunlight intensity and the sunlight duration can influence the speed of generating electric energy for the photovoltaic panel and the like, so that when the parameters of buying the electricity SOC and the parameters of selling the electricity SOC are preset, the parameters can be set more reasonably by referring to the actual environmental factors.
For the presetting of the parameters of the buying electric power and the selling electric power, the batteries can be divided into high-performance batteries and low-performance batteries according to different battery types, the capacity margin of the high-performance batteries can be set smaller than that of the low-performance batteries, and the buying electric power and the selling electric power of the high-performance batteries are set larger than those of the low-performance batteries, specifically for the following reasons:
for a high-performance battery, the acquired data of the SOC of the battery is high in precision and small in error, and the system judges the residual capacity of the battery accurately, so that the capacity margin of the battery can be set smaller, such as 5%, corresponding buying electric power and selling electric power are set larger, the battery is charged to 95% of the total capacity when the light storage system executes electricity buying operation, the damage to the battery caused by overcharging is avoided, or the light storage system sells the battery to 5% of the residual capacity of the electric quantity when executing electricity selling operation, and the damage to the battery caused by overdischarging of the battery is avoided.
For low-performance batteries, the acquired data of the battery SOC is low in precision and high in error, and the system is low in judgment accuracy of the residual electric quantity of the battery, so that the capacity margin of the battery can be set to be large, such as 10%, corresponding buying electric power and selling electric power are set to be small, the battery is charged to 90% of the total capacity when the light storage system executes electricity buying operation, the battery damage caused by overcharge is avoided, or the light storage system sells the electric quantity of the battery to 10% of the total residual electric quantity capacity when the light storage system executes electricity selling operation, and the battery damage caused by excessive discharging of the battery is avoided.
Aiming at the presetting of the parameters of the buying electric power and the parameters of the selling electric power, the step rate electricity price system can be referred to for setting, according to the step rate electricity price system, when the electricity buying amount of a user from a public power grid exceeds the first electricity buying amount, the unit price of the excess electric amount can be increased, so that the unit price is cheapest when the user buys electricity without exceeding the first electricity buying amount when the parameters of the buying electric power are set, and the buying electricity price is most cost-effective; similarly, according to the step rate electricity price system, when the amount of electricity sold to the public power grid by a user exceeds the first-grade electricity selling amount, the unit price of the excess amount of electricity can be reduced, so that the unit price is most expensive when the user sells electricity, and the most income of selling electricity can be ensured without exceeding the first-grade electricity selling amount when the parameter of the electricity selling power is set.
Further, referring to fig. 1, the switch 6 is respectively connected with the light storage inverter 1, the electric meter 3 and the load 5, where the switch 6 is used to control the interaction state of the light storage system and the public power grid, so that the light storage system operates in a grid-connected state or an off-grid state, and the design of the switch 6 may be an external specific switch or may directly adopt an internal switch network of the light storage inverter.
Further, referring to fig. 1, the DC/DC converter 11 is connected to the bidirectional DC/DC converter 12, the DC/AC converter 13, and the photovoltaic panel 4, and the DC/DC converter 11 is configured to convert the direct current generated by the photovoltaic panel 4 into a direct current of a higher voltage and output the direct current to the bidirectional DC/DC converter 12 and the DC/AC converter 13, respectively.
The bidirectional DC/DC converter 12 is connected to the DC/DC converter 11, the DC/AC converter 13, and the battery 2, respectively, and the bidirectional DC/DC converter 12 is configured to charge the battery 2 with the electric energy output from the DC/DC converter 11, and the bidirectional DC/DC converter 12 is also configured to output the electric energy stored in the battery 2 to the DC/AC converter 13.
The DC/AC converter 13 is connected to the DC/DC converter 11, the bidirectional DC/DC converter 12, and the load 5, respectively, and the DC/AC converter 13 is configured to convert direct current output by the DC/DC converter 11 into alternating current to supply power to the load 5, that is, electric energy generated by the photovoltaic panel 4 sequentially passes through the DC/DC converter 11 and the DC/AC converter 13 to supply power to the load 5; the DC/AC converter 13 is further configured to convert the direct current output from the bidirectional DC/DC converter 12 into alternating current to supply power to the load 5, that is, the electric energy stored in the battery 2 sequentially passes through the bidirectional DC/DC converter 12 and the DC/AC converter 13 to supply power to the load 5.
Further, when power is supplied to the load 5, the following scheduling manner may be adopted by using the electric energy in the photovoltaic panel 4 or the electric energy in the battery 2:
the light storage inverter 1 collects the power of the grid-side load 5 and the output power of the photovoltaic panel 4, and judges the output power of the photovoltaic panel 4 and the power of the load 5:
if the output power of the photovoltaic panel 4 is smaller than the power of the load 5, it indicates that the operation of the load 5 cannot be satisfied by the electric energy generated by the photovoltaic panel 4 alone, so that the light storage inverter 1 controls the battery 2 to supply power to the load 5, and at this time, the load 5 is simultaneously supplied with power through the photovoltaic panel 4 and the battery 2.
If the output power of the photovoltaic panel 4 is equal to the power of the load 5, it indicates that the electric energy generated by the photovoltaic panel 4 can just meet the operation of the load 5, so that the battery 2 is not required to be controlled to supply power to the load 5, and the load 5 is supplied with power through the photovoltaic panel 4.
If the output power of the photovoltaic panel 4 is greater than the power of the load 5, it indicates that the electric energy generated by the photovoltaic panel 4 can not only meet the operation of the load 5, but also have residual electric energy, so that the photovoltaic inverter 1 charges the battery 2 with the residual electric energy of the photovoltaic panel 4, thereby avoiding the waste of electric energy, and at the moment, the photovoltaic panel 4 supplies power to the load 5.
Example two
The embodiment discloses a network side power management control device of an optical storage system, the network side power management control device of the optical storage system executes the steps of the network side power management control method of the optical storage system in the first embodiment, and the network side power management control device of the optical storage system comprises the following units:
the power supply system comprises a preset parameter acquisition unit, a power supply control unit and a power supply control unit, wherein the preset parameter acquisition unit is used for acquiring preset parameters, and the preset parameters comprise power supply SOC, power supply time period and power supply time period;
the system comprises an acquisition data acquisition unit, a control unit and a control unit, wherein the acquisition data acquisition unit is used for acquiring acquisition data, and the acquisition data comprise battery SOC, ammeter power, light storage inverter output power and local time;
the logic control unit is used for controlling the output power of the light storage inverter according to the preset parameters and the acquired data so that the power of the ammeter is equal to the buying power, and executing buying power operation; or controlling the output power of the light storage inverter so that the electricity meter power is equal to the selling power, and executing the selling power operation.
Example III
The embodiment discloses a terminal, the terminal includes: a processor, a memory, and a communication bus; the communication bus is used for realizing connection communication between the processor and the memory, and the processor is used for executing one or more programs stored in the memory so as to realize the steps of the network side power management control method of the optical storage system in the first embodiment.
Example IV
The present embodiment discloses a computer readable storage medium storing instructions that, when executed, perform the steps of the optical storage system network side power management control method of the first embodiment.
The foregoing are all preferred embodiments of the present application, and are not intended to limit the scope of the present application in any way, therefore: all equivalent changes in structure, shape and principle of this application should be covered in the protection scope of this application.
Claims (9)
1. The network side power management control method of the optical storage system is characterized in that the optical storage system comprises an optical storage inverter, a battery and an ammeter, and the control method comprises the following steps:
step S100, obtaining preset parameters, wherein the preset parameters comprise power buying SOC, power selling SOC, power buying power, power selling power, power buying period and power selling period;
step S200, acquiring acquisition data, wherein the acquisition data comprise battery SOC, ammeter power, output power of an optical storage inverter and local time;
step S300, controlling the output power of the light storage inverter according to the preset parameters and the acquired data, enabling the power of the ammeter to be equal to the buying power, and executing buying power operation; or controlling the output power of the light storage inverter according to the preset parameters and the acquired data so that the power of the ammeter is equal to the selling power, and executing selling power operation;
the step S300 specifically includes the following steps:
step S310, judging whether the local time is in a power buying period, if so, entering step S320; if the local time is not in the power buying period, step S330 is entered;
step S320, judging whether the battery SOC is smaller than the buying power SOC, if so, controlling the output power of the light storage inverter to enable the power of the electric meter to be equal to the buying power, and executing buying power operation; if the battery SOC is more than or equal to the buying SOC, ending the flow;
step S330, judging whether the local time is in a power selling period, if so, entering step S340; if the local time is not in the electricity selling period, ending the flow;
step S340, judging whether the battery SOC is larger than the selling SOC, if so, controlling the output power of the light storage inverter to enable the power of the ammeter to be equal to the selling power, and executing selling electric operation; and if the battery SOC is smaller than or equal to the electricity selling SOC, ending the flow.
2. The network-side power management control method of an optical storage system according to claim 1, wherein: before the electricity buying action or the electricity selling action is executed according to the preset parameters and the acquired data, the method further comprises the following steps:
dynamically adjusting one or more of the preset parameters according to the date type and/or special event corresponding to the local time; the date type includes: workdays, weekends and legal holidays; the special events include: and (5) notifying power failure and notifying the public power grid of time-period power supply.
3. The network-side power management control method of an optical storage system according to claim 2, wherein: before the electricity buying action or the electricity selling action is executed according to the preset parameters and the acquired data, the method further comprises the following steps:
obtaining the load condition of each period according to the historical electricity consumption data, and dynamically adjusting one or more of the preset parameters according to the load condition of each period; the load conditions include a load high power state and a load low power state.
4. The network-side power management control method of an optical storage system according to claim 1, wherein: before the preset parameters are acquired, the method further comprises the following steps:
dividing a time period with low local electricity price into a low electricity price time period according to a time-sharing electricity price system, dividing a time period with high local electricity price into a high electricity price time period, presetting parameters of a buying time period according to the low electricity price time period, and presetting parameters of a selling time period according to the high electricity price time period.
5. The method for controlling network-side power management of an optical storage system according to claim 4, wherein: before the preset parameters are acquired, the method further comprises the following steps:
presetting parameters of a buying electricity SOC and parameters of a selling electricity SOC according to the actual capacity of a battery and environmental factors; the environmental factors comprise environmental temperature, environmental humidity, sunlight intensity and sunlight duration;
acquiring a capacity margin corresponding to a battery type, and presetting parameters of buying electric power and parameters of selling electric power according to the capacity margin;
and presetting parameters of buying electric power and parameters of selling electric power according to the stepped rate electric power price system.
6. The network-side power management control method of an optical storage system according to claim 1, wherein: the light storage system further comprises a switch, wherein the switch is used for controlling the interaction state of the light storage system and a public power grid to enable the light storage system to operate in a grid-connected state or an off-grid state, and the switch is an external specific switch or an internal switch network of the light storage inverter.
7. A network-side power management control device of an optical storage system, comprising:
the power supply system comprises a preset parameter acquisition unit, a power supply control unit and a power supply control unit, wherein the preset parameter acquisition unit is used for acquiring preset parameters, and the preset parameters comprise power supply SOC, power supply time period and power supply time period;
the system comprises an acquisition data acquisition unit, a control unit and a control unit, wherein the acquisition data acquisition unit is used for acquiring acquisition data, and the acquisition data comprise battery SOC, ammeter power, light storage inverter output power and local time;
the logic control unit is used for controlling the output power of the light storage inverter according to the preset parameters and the acquired data so that the power of the ammeter is equal to the buying power, and executing buying power operation; or controlling the output power of the light storage inverter so that the electricity meter power is equal to the selling power, and executing the selling power operation.
8. A terminal, the terminal comprising: a processor, a memory, and a communication bus; the communication bus is used for realizing connection communication between a processor and a memory, and the processor is used for executing one or more programs stored in the memory to realize the steps of the network side power management control method of the optical storage system according to any one of claims 1-6.
9. A computer readable storage medium storing instructions which, when executed, perform the steps of the optical storage system network side power management control method of any one of claims 1-6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310510977.7A CN116316767B (en) | 2023-05-09 | 2023-05-09 | Network side power management control method and device for optical storage system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310510977.7A CN116316767B (en) | 2023-05-09 | 2023-05-09 | Network side power management control method and device for optical storage system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN116316767A true CN116316767A (en) | 2023-06-23 |
| CN116316767B CN116316767B (en) | 2023-08-11 |
Family
ID=86781720
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310510977.7A Active CN116316767B (en) | 2023-05-09 | 2023-05-09 | Network side power management control method and device for optical storage system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116316767B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116667538A (en) * | 2023-07-24 | 2023-08-29 | 常州思瑞电力科技有限公司 | Electricity consumption management system of household photovoltaic power station |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109617104A (en) * | 2018-12-07 | 2019-04-12 | 国家电网有限公司 | Grid control method is filled in a kind of storage of light |
| CN110661289A (en) * | 2019-09-26 | 2020-01-07 | 深圳天顺智慧能源科技有限公司 | Microgrid system grid-connected operation control method and device and microgrid system |
| CN111711189A (en) * | 2020-06-18 | 2020-09-25 | 华润协鑫(北京)热电有限公司 | Photovoltaic power generation energy storage control method, system, equipment and storage medium |
-
2023
- 2023-05-09 CN CN202310510977.7A patent/CN116316767B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109617104A (en) * | 2018-12-07 | 2019-04-12 | 国家电网有限公司 | Grid control method is filled in a kind of storage of light |
| CN110661289A (en) * | 2019-09-26 | 2020-01-07 | 深圳天顺智慧能源科技有限公司 | Microgrid system grid-connected operation control method and device and microgrid system |
| CN111711189A (en) * | 2020-06-18 | 2020-09-25 | 华润协鑫(北京)热电有限公司 | Photovoltaic power generation energy storage control method, system, equipment and storage medium |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116667538A (en) * | 2023-07-24 | 2023-08-29 | 常州思瑞电力科技有限公司 | Electricity consumption management system of household photovoltaic power station |
| CN116667538B (en) * | 2023-07-24 | 2023-09-29 | 常州思瑞电力科技有限公司 | Electricity consumption management system of household photovoltaic power station |
Also Published As
| Publication number | Publication date |
|---|---|
| CN116316767B (en) | 2023-08-11 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP5584763B2 (en) | DC power distribution system | |
| US9343926B2 (en) | Power controller | |
| JP2003244854A (en) | Charge and discharge controller for storage apparatus, charge and discharge control method, and power storage system | |
| WO2011122681A1 (en) | System-stabilizing system, power supply system, method for controlling central management device, and program for central management device | |
| CN202134924U (en) | Structure of multifunctional system of solar power and self use connected grid | |
| CN108695871B (en) | Configuration method for reducing energy storage capacity requirement of island micro-grid containing power spring | |
| CN110323785B (en) | Multi-voltage-level direct-current power distribution network optimization scheduling method for source network load storage interaction | |
| JP2015195726A (en) | Power managing device, power managing system, power storage battery and power managing method | |
| CN105846419A (en) | Photovoltaic and diesel complementary power supply system based on DC microgrid | |
| CN110661278A (en) | Energy storage air conditioning system and control method and control device thereof | |
| CN116316767B (en) | Network side power management control method and device for optical storage system | |
| CN113610374A (en) | Wind-solar complementary power plan deviation dynamic compensation energy storage energy management method | |
| JP5841279B2 (en) | Electric power charging device | |
| US9876350B2 (en) | Power supply system | |
| CN115360736A (en) | Energy storage system and energy storage control method | |
| CN113644675B (en) | Peak clipping and valley filling control method for 5G base station light storage power supply | |
| JP6753469B2 (en) | Power storage device and power supply system | |
| CN102931676A (en) | Structure and method of solar power grid-connected self-use multifunctional system | |
| CN117060475A (en) | Control method of new energy charging station and related equipment | |
| EP3869658A1 (en) | Smart balancing energy charging control system | |
| CN113555889B (en) | Energy storage charging system, control method and readable storage medium | |
| CN115912417A (en) | Model prediction-based control method for direct-current micro-grid distributed energy storage system | |
| CN110768274B (en) | Power control method and device for isolated microgrid | |
| CN114893873A (en) | Air conditioner control method and device and air conditioner | |
| JP7252116B2 (en) | Renewable energy power generation system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address | ||
| CP03 | Change of name, title or address |
Address after: Building 5, No. 688 Liupu Road, Guoxiang Street, Wuzhong Economic Development Zone, Suzhou City, Jiangsu Province, 215000 Patentee after: Daqin Digital Energy Technology Co.,Ltd. Address before: Plant 5, No. 688 Liupu Road, Guoxiang Street, Wuzhong Economic Development Zone, Wuzhong District, Suzhou City, Jiangsu Province, 215000 Patentee before: JIANGSU DAQIN NEW ENERGY TECHNOLOGY Co.,Ltd. |