CN116365565B - Direct control type energy storage capacity configuration method - Google Patents
Direct control type energy storage capacity configuration method Download PDFInfo
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- CN116365565B CN116365565B CN202310082783.1A CN202310082783A CN116365565B CN 116365565 B CN116365565 B CN 116365565B CN 202310082783 A CN202310082783 A CN 202310082783A CN 116365565 B CN116365565 B CN 116365565B
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- 238000004146 energy storage Methods 0.000 title claims abstract description 251
- 238000000034 method Methods 0.000 title claims abstract description 28
- 230000005611 electricity Effects 0.000 claims abstract description 63
- 238000010248 power generation Methods 0.000 claims abstract description 35
- 230000003203 everyday effect Effects 0.000 claims abstract description 8
- 230000002354 daily effect Effects 0.000 claims description 30
- 230000001105 regulatory effect Effects 0.000 claims description 6
- 230000007423 decrease Effects 0.000 claims description 2
- 238000007599 discharging Methods 0.000 description 15
- 238000005265 energy consumption Methods 0.000 description 12
- 238000012544 monitoring process Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 230000033228 biological regulation Effects 0.000 description 2
- 238000011010 flushing procedure Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
Classifications
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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
- 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
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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
- H02J2300/28—The renewable source being wind energy
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Supply And Distribution Of Alternating Current (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The invention relates to a configuration method, in particular to a direct control type energy storage capacity configuration method, which belongs to the technical field of electric power energy storage and comprises the following steps: s1: firstly, counting the occurrence time of wind speed of each day according to wind conditions, combining the performance of a wind driven generator with wind condition data, calculating the electric quantity generated by the wind driven generator each day, drawing a generating capacity curve of the current month, calculating an extreme value of the generating capacity of each month, calculating the average value of the generating capacity of the wind driven generator according to the extreme value of the generating capacity of twelve months of the whole year, and preliminarily determining the energy storage capacity of an energy storage system according to the average value of the generating capacity of the wind driven generator; s2: counting the electricity consumption used every day according to the electricity consumption demand, and counting the electricity consumption every day; the invention can accurately control the capacity of the energy storage battery pack, thereby effectively improving the accuracy of the energy storage capacity configuration, simplifying the matching process of power generation, storage and discharge and effectively improving the flexibility of the energy storage capacity configuration.
Description
Technical Field
The invention relates to a direct control type energy storage capacity configuration method, and belongs to the technical field of electric power energy storage.
Background
Renewable energy sources such as wind energy and solar energy have the advantages of wide resource distribution, large reserves, no pollution and the like, the renewable energy sources need to be stored in the form of electric power, the renewable energy sources can occupy important positions in future energy patterns with increasingly serious energy crisis and environmental pollution, the electric power energy storage technology is acknowledged as an important component part in a future electric power system, the proposal of a micro-grid realizes flexible and efficient application of a distributed power source, the problem of grid connection of the distributed power source with huge quantity and various forms is solved, the large-scale access of the distributed power source and the renewable energy sources can be fully promoted when the micro-grid is developed and extended, the high reliable supply and storage of various energy forms of loads are realized, the energy storage capacity configuration cannot be directly controlled when the electric energy is stored in the current energy storage mode, the phenomenon of unbalanced electric power occurs when the energy storage capacity configuration is not suitable, and the charging and discharging of the energy storage system cannot be directly flexibly adjusted and controlled when the electric energy is stored.
As disclosed in publication No. (CN 115173450 a), a method for configuring energy storage capacity of a self-regulating micro-grid is disclosed, which includes the following steps: establishing a micro-grid group, wherein the micro-grid group and a power grid are subjected to grid-connected operation, and the micro-grid group comprises a plurality of new energy power stations; constructing and periodically updating a new energy power station list which actually participates in regulation and control, wherein the new energy power station list is divided into a plurality of layers according to the capacity percentage of each new energy power station from top to bottom; predicting the power consumption load of the power grid, and outputting the power consumption load to be regulated; and according to the power load to be regulated, configuring a new energy power station according to the sequence from a high level to a low level to carry out grid-connected power supply. The invention sets the discharge priority and avoids the occurrence of overcharge or overdischarge.
According to the technical scheme, although priority ordering of the energy storage capacity percentage from high to low in the electric energy storage discharging process is realized, overshoot or overdischarge is avoided, the technical scheme is characterized in that a micro-grid group and a power grid are subjected to grid-connected operation, a new energy power station is configured according to the electric load required to be regulated and controlled in a high-level to low-level order to carry out grid-connected power supply, in the process, although the power station, the energy storage system and the load end are subjected to hierarchical flushing and discharging, the power station, the energy storage system and the load end cannot be simultaneously controlled, the power station, the energy storage system and the load end cannot be directly combined to carry out integral charging and discharging configuration, the integral flow of the energy storage capacity configuration is influenced, the accuracy of the energy storage capacity configuration is low, the process in the energy storage capacity configuration process is complicated, flexible configuration cannot be carried out according to electric energy regulation and control in the independent flow of energy storage, and certain disadvantages exist in the use process.
In view of this, a direct control type energy storage capacity configuration method is specifically proposed.
Disclosure of Invention
The invention aims to solve the problems and provide a direct control type energy storage capacity configuration method which can accurately control the capacity of an energy storage battery pack, so that the accuracy of energy storage capacity configuration can be effectively improved, the matching process of power generation, storage and discharge is simplified, and the flexibility of energy storage capacity configuration is effectively improved.
The invention realizes the aim through the following technical scheme, and the direct control type energy storage capacity configuration method comprises the following steps:
s1: firstly, counting the occurrence time of wind speed of each day according to wind conditions, combining the performance of a wind driven generator with wind condition data, calculating the electric quantity generated by the wind driven generator each day, drawing a generating capacity curve of the current month, calculating an extreme value of the generating capacity of each month, calculating the average value of the generating capacity of the wind driven generator according to the extreme value of the generating capacity of twelve months of the whole year, and preliminarily determining the energy storage capacity of an energy storage system according to the average value of the generating capacity of the wind driven generator;
s2: counting the electricity consumption used every day according to the electricity consumption demand, counting the electricity consumption every day, drawing a electricity consumption curve of the current month, calculating an electricity consumption extremum of the current month, calculating a power consumption level average value according to the electricity consumption extremum of twelve months of the whole year, and taking the power consumption average value as the energy storage demand;
s3: the energy storage system in the S1 is an energy storage battery pack formed by connecting single energy storage batteries in parallel, the generating capacity curve in the current month and the electricity consumption curve in the current month are compared, and the electric quantity value of the intersection point of the generating capacity curve and the electricity consumption curve is taken as the primary capacity value of the energy storage battery pack;
s4: comparing the power generation average value with the power utilization level average value, when the error between the power generation average value and the power utilization level average value is smaller, determining the parallel connection quantity of the single energy storage battery by the power generation average value or the power utilization level average value, and adding the quantity of the single energy storage battery when the error between the power generation average value and the power utilization level average value is larger as final configuration of energy storage capacity, wherein the quantity of the single energy storage battery is used for enabling the capacity of the energy storage battery pack to be the same as that of the power generation average value.
Preferably, in order to make corresponding comparison between the generated energy and the used electric energy by calculating the generated electric energy extremum and the used electric energy extremum, the accuracy of energy storage capacity configuration is improved, a perpetual motion machine generator in the wind driven generator is controlled by a speed regulating motor, an electric energy output line is connected with an ammeter and a voltmeter to obtain output current and output voltage, the output current and the output voltage are multiplied to obtain the current power and the generated energy, and the extremum of the generated energy and the extremum of the used electric energy are obtained by subtracting the current month minimum generated energy and the month minimum used electric energy from the current month maximum generated energy and the highest used electric energy.
Preferably, in order to realize the storage and transmission of electric energy through the energy storage system, the energy storage system includes energy storage module, electrode connection module, electric energy receiving module and electric energy release module, energy storage module is for energy storage battery is organized for to the storage and the release of electric energy, electrode connection module is used for with single the positive negative pole of energy storage battery links together respectively, electric energy receiving module is used for with aerogenerator produces the electric energy more and receives, and with electric energy storage in the energy storage battery, electric energy release module is used for with electric energy in the energy storage battery is organized transmits.
Preferably, in order to accurately calculate the current month power generation amount of the wind turbine, the current month average power generation amount statistics of the wind turbine in S1 specifically includes the following steps:
s101: firstly, setting the rotating speed of the wind driven generator as a constant value, counting the number of rotations of blades of the wind driven generator, calculating the wind speed occurrence time according to the number of rotations, and calculating the daily output power of the wind driven generator to obtain the daily generated energy;
s102: and comparing the maximum power generation amount and the minimum power generation amount in the same day of the current month, judging the current month wind condition, when the wind condition is stable, taking the extreme value of the current month power generation amount, calculating the extreme value average value by using the extreme value of one year of each month, when the wind condition is unstable, calculating the average value of the monthly power generation amount, and then calculating the average value of one year of each month, wherein the extreme value average value and the average value of each month are used as the energy storage capacity of the energy storage system.
Preferably, in order to improve the configuration effect of the energy storage battery pack by daily average electricity demand, and enable the configuration of the energy storage capacity to be more accurate, the specific step of calculating the electricity consumption in S2 is to measure rated power of the electric equipment, connect the electric equipment with the energy storage system, measure daily electricity consumption through a universal meter, calculate the electricity consumption extremum of each month according to the daily electricity consumption of the current month, calculate the electricity consumption average value according to the electricity consumption extremum in one year, and obtain the daily average electricity demand, and the capacity of the energy storage battery pack is greater than the daily average electricity demand.
Preferably, in order to directly control the capacity of the energy storage battery pack by adding a single energy storage battery, the capacity configuration step of the energy storage battery pack in S3 includes determining a preliminary capacity value of the energy storage battery pack, adding the single energy storage battery according to the daily average electricity consumption demand until the capacity of the energy storage battery pack is greater than the daily average electricity consumption demand, continuing to add the single energy storage battery according to the power generation average value of the wind driven generator, and adapting the capacity of the energy storage battery pack to the power generation average value.
Preferably, in order to protect a single energy storage battery and an energy storage battery pack, damage to the single energy storage battery and the energy storage battery pack caused by overlarge current generated by a wind driven generator is prevented, meanwhile, the energy storage battery pack can be protected by monitoring service life decay of the energy storage battery pack, constant capacity of the energy storage battery pack is guaranteed, the capacity of the energy storage battery pack safely receives maximum current intensity output by the wind driven generator, meanwhile, service life decay of the energy storage battery pack is monitored, the service life decay monitoring step of the energy storage battery pack is that firstly, charging and discharging times of the energy storage battery are counted, the completion time of each charging and discharging is recorded, the completion time of each charging and discharging is analyzed, whether a charging and discharging time interval is in a step-shaped manner or not is judged, and damage to the energy storage battery pack can be judged when larger time appears.
Preferably, in order to control the energy storage capacity to remain stable by replacing or adding a single energy storage battery, the number of times of capacity allocation again is reduced, when the single energy storage battery is damaged, the single energy storage battery with a problem is detected, replacement is performed, and meanwhile, when the service life of the energy storage battery pack is reduced, the single energy storage battery is added.
The beneficial effects of the invention are as follows: the capacity of the energy storage battery pack can be accurately controlled by accurately calculating the generated energy and the electricity consumption demand of the wind driven generator, so that the accuracy of energy storage capacity configuration can be effectively improved, the matching process of power generation, storage and discharge is simplified, and the flexibility of energy storage capacity configuration is effectively improved.
Drawings
FIG. 1 is a graph of daily power generation and daily power consumption of the present invention.
Fig. 2 is a schematic overall configuration flow chart of the present invention.
FIG. 3 is a flow chart of the average monthly power generation statistics of the wind turbine of the present invention.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Referring to fig. 1-3, a method for configuring energy storage capacity includes the steps of firstly counting time of occurrence of wind speed per day according to wind condition, combining performance of wind driven generator with wind condition data, calculating electric quantity generated by wind driven generator per day, drawing generating capacity curve of current month, calculating extreme value of generating capacity per month, calculating average value of generating power of wind driven generator according to extreme value of generating capacity of twelve months of year, determining energy storage capacity of energy storage system preliminarily with average value of generating power of wind driven generator, calculating accurately generating capacity of wind driven generator, determining energy storage capacity of energy storage battery preliminarily with average value of generating power, making energy storage capacity of energy storage battery close to average value of generating power, configuring capacity of energy storage battery higher than average value of generating power, when in use, the surplus electric energy of the wind driven generator is prevented, the accuracy of energy storage configuration is effectively prevented from being influenced, the electric energy consumption used every day is counted according to the electric energy consumption, the electric energy consumption of every day is counted, a current month electric energy consumption curve is drawn, a current month electric energy consumption extreme value is calculated, the electric energy consumption average value is calculated according to the current month electric energy consumption extreme value of the whole year, the electric energy consumption average value is used as the energy storage demand, the energy storage capacity of the energy storage battery pack is configured to be larger than the electric energy consumption average value, the problem of electric energy shortage during electricity consumption is prevented, the electric energy generation average value and the electric energy consumption average value are used as the basis for configuring the capacity of the energy storage battery pack, the accuracy of the energy storage capacity configuration is effectively improved, the energy storage system is an energy storage battery pack formed by connecting single energy storage batteries in parallel, the current month electric energy generation curve and the current month electric energy consumption curve are compared, the method comprises the steps of taking an electric quantity value of an intersection point of an electric generation quantity curve and an electric consumption curve as a preliminary capacity value of an energy storage battery pack, comparing an electric generation average value with an electric level average value, determining the parallel quantity of single energy storage batteries by the electric generation average value or the electric level average value when the error between the electric generation average value and the electric level average value is small, and adding the quantity of the single energy storage batteries as final configuration of energy storage capacity when the error between the electric generation average value and the electric level average value is large, so that the capacity of the energy storage battery pack is identical to the electric generation average value, and realizing direct control of the capacity of the energy storage batteries by adding the single energy storage battery when the electric energy storage battery pack is used, thereby improving the flexibility and convenience of energy storage capacity configuration.
The permanent machine generator in the wind driven generator is controlled by a speed regulating motor, an ammeter and a voltmeter are connected to an electric energy output line to obtain an output current and an output voltage, the output current and the output voltage are multiplied to obtain the current power and the generated energy, the extreme value of the generated energy and the extreme value of the used electric quantity in each month are obtained by subtracting the lowest generated energy and the lowest used electric quantity in the month from the highest generated energy and the highest used electric quantity in the month, when the wind driven generator is used, the extreme value of the generated electric quantity and the used electric quantity is calculated, the capacity of the energy storage battery pack is configured through the extreme value of the generated energy and the used electric quantity, and the accuracy of the configuration of the energy storage capacity is improved.
The energy storage system comprises an energy storage module, an electrode connection module, an electric energy receiving module and an electric energy releasing module, wherein the energy storage module is an energy storage battery pack and is used for storing and releasing electric energy, the electrode connection module is used for connecting the positive electrode and the negative electrode of a single energy storage battery together respectively, the electric energy receiving module is used for receiving more electric energy generated by the wind driven generator and storing the electric energy in the energy storage battery pack, the electric energy releasing module is used for transmitting the electric energy in the energy storage battery pack, when the energy storage system is in actual use, the electric energy generated by the wind driven generator is transmitted into the energy storage module to be stored through the electrode connection module, the electric energy generated by the wind driven generator corresponds to the energy storage capacity of the energy storage battery, the electric energy is transmitted to electric equipment through the electric energy releasing module, the charging and discharging process of the energy storage battery pack is realized, the energy storage capacity of the energy storage battery pack is large compared with the required electric quantity of the electric equipment when the wind driven generator is in flushing and discharging, and the electricity consumption requirement is guaranteed.
The method comprises the specific steps of firstly setting the rotating speed of a wind driven generator as a constant value, counting the number of rotations of blades of the wind driven generator, calculating the occurrence time of wind speed according to the number of rotations, calculating the daily output power of the wind driven generator, obtaining the daily generated energy, comparing the maximum generated energy and the minimum generated energy in the day of the month, judging the current situation of the month, calculating the extremum value according to the extremum value of the current generated energy when the current situation is stable, calculating the average value of the generated energy of each month when the current situation is unstable, calculating the average value of the generated energy of each month, and calculating the average value of each month according to the extremum value and the average value of the generated energy of each year when the current situation is used, wherein the extremum value of the wind driven generator and the average value of the generated energy of each month correspond to the upper limit of the capacity of an energy storage battery pack, so that the capacity of the energy storage battery pack is effectively determined to be within a certain range, and the accuracy of the configuration of the energy storage capacity can be improved.
The power consumption statistics specifically comprises the steps of firstly measuring rated power of electric equipment, connecting the electric equipment with an energy storage system, measuring daily electric energy consumption through a universal meter, calculating a monthly power consumption extreme value according to the daily power consumption of the current month, calculating a power consumption level average value according to the power consumption extreme value in one year, obtaining daily average power consumption demand, and determining the lowest energy storage capacity of the energy storage battery pack according to the average power consumption demand by counting the power consumption when the power consumption is used, so that the power consumption demand is prevented from being influenced when the energy storage capacity of the energy storage battery pack is too low, and meanwhile, the capacity configuration effect is also influenced.
The capacity configuration of the energy storage battery pack comprises the steps of firstly determining a preliminary capacity value of the energy storage battery pack, adding a single energy storage battery according to daily average electricity consumption demand until the capacity of the energy storage battery pack is larger than the daily average electricity consumption demand, continuously adding the single energy storage battery according to the power generation average value of the wind driven generator, adapting the capacity of the energy storage battery pack to the power generation average value, and adding the single energy storage battery according to the generated energy and the electricity consumption demand when the energy storage battery pack is used, so that the energy storage capacity of the energy storage battery pack is increased, flexible configuration of the energy storage capacity is realized, direct capacity adjustment control of the energy storage battery pack is realized, and convenience in use is effectively improved.
The capacity of the energy storage battery pack safely receives the maximum current intensity output by the wind driven generator, and meanwhile, the service life attenuation monitoring step of the energy storage battery pack is that firstly, the charge and discharge times of the energy storage battery pack are counted, the completion time of each charge and discharge is recorded, the completion time of each charge and discharge is analyzed, whether the charge and discharge time interval is in a stepped decrease or not is judged, when the larger time appears, the damage of the energy storage battery pack can be judged, when the wind driven generator generates electricity, the capacity of the energy storage battery pack completely receives the maximum current intensity of the wind driven generator, the energy storage battery pack can be effectively protected, the damage of the energy storage battery pack caused by the overlarge current generated by the wind driven generator is prevented, the energy storage capacity of the energy storage battery pack cannot be influenced, meanwhile, the self performance of the energy storage battery pack can be timely known through monitoring the service life attenuation of the energy storage battery pack, the energy storage effect is prevented from being influenced, and the energy storage configuration accuracy is prevented from being influenced by the service life attenuation of the energy storage battery pack.
When the energy storage battery is damaged, the single energy storage battery is detected, the single energy storage battery with the problem is found out and replaced, meanwhile, when the service life of the energy storage battery pack is reduced, the single energy storage battery is added, when the energy storage battery pack is used, the single energy storage battery is replaced, the damage of the single energy storage battery is prevented from influencing the capacity requirement of the whole energy storage battery pack, when the condition that the service life of the energy storage battery pack is reduced is detected, the energy storage capacity of the energy storage battery pack is improved through adding the single energy storage battery, the stability of the energy storage capacity is effectively guaranteed for replacing the single energy storage battery and adding the single energy storage battery, and the accuracy of the energy storage capacity configuration is further improved.
When the wind power generation system is used, firstly, the energy storage capacity of the energy storage battery pack is preliminarily determined according to the power generation average value, the energy storage capacity of the energy storage battery pack is close to the power generation average value, the capacity of the energy storage battery pack is configured to be higher than the power generation average value, the current month wind condition is judged, when the current month wind condition is stable, the extreme value of the current month generated energy is taken, the extreme value average value of one year is calculated, when the current month wind condition is unstable, the average value of one year is calculated, the extreme value average value and the average value of one year are taken as the energy storage capacity of the energy storage system, the daily used electric quantity is counted according to the electric power consumption requirement, the daily used electric quantity is counted, a current month electric quantity curve is drawn, the current month used electric quantity extreme value is calculated, the used electric level average value is calculated according to the twelve month used electric quantity extreme value of the whole year, the average electricity consumption is used as the energy storage demand, the electricity generation amount and the electricity consumption demand are used as the basis, a single energy storage battery is added, the energy storage capacity of the energy storage battery pack is increased, flexible configuration of the energy storage capacity is realized, direct adjustment and control of the capacity of the energy storage battery pack are realized, the energy storage system is the energy storage battery pack formed by connecting the single energy storage batteries in parallel, the electricity generation amount curve of the current month and the electricity consumption curve of the current month are compared, the electricity quantity value of the intersection point of the electricity generation amount curve and the electricity consumption curve is used as the primary capacity value of the energy storage battery pack, the electricity generation average value and the electricity consumption level average value are compared, when the error between the electricity generation average value and the electricity consumption level average value is smaller, the parallel connection quantity of the single energy storage battery is determined by the electricity generation average value or the electricity consumption level average value, and is used as the final configuration of the energy storage capacity, when the error between the electricity generation average value and the electricity consumption level average value is larger, the invention relates to a method for charging and discharging energy storage battery packs, which comprises the steps of adding the number of single energy storage batteries, enabling the capacity of the energy storage battery packs to be the same as the average value of power generation, storing and discharging electric energy through an energy storage system in the actual use process, wherein the energy storage system comprises an energy storage module, an electrode connection module, an electric energy receiving module and an electric energy discharging module, when the energy storage system is in actual use, the electric energy generated by a wind driven generator is conveyed into the energy storage module to be stored under the cooperation of the energy storage module, the electric energy generated by the wind driven generator corresponds to the energy storage capacity of the energy storage batteries, and the electric energy is conveyed to electric equipment through the electric energy discharging module, so that the charging and discharging processes of the energy storage battery packs are realized.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present disclosure describes embodiments, not every embodiment is provided with a separate embodiment, and that this description is provided for clarity only, and that the disclosure is not limited to the embodiments described in detail below, and that the embodiments described in the examples may be combined as appropriate to form other embodiments that will be apparent to those skilled in the art.
Claims (1)
1. A direct control type energy storage capacity configuration method is characterized in that: the method comprises the following steps:
s1: firstly, counting the occurrence time of wind speed of each day according to wind conditions, combining the performance of a wind driven generator with wind condition data, calculating the electric quantity generated by the wind driven generator each day, drawing a generating capacity curve of the current month, calculating an extreme value of the generating capacity of each month, calculating the average value of the generating capacity of the wind driven generator according to the extreme value of the generating capacity of twelve months of the whole year, and preliminarily determining the energy storage capacity of an energy storage system according to the average value of the generating capacity of the wind driven generator;
the permanent machine generator in the wind driven generator is controlled by a speed regulating motor, an ammeter and a voltmeter are connected to an electric energy output line to obtain output current and output voltage, the output current and the output voltage are multiplied to obtain current day power and generating capacity, and the extreme value of each month generating capacity are obtained by subtracting the current month minimum generating capacity and the current month minimum generating capacity from the current month maximum generating capacity and the current month minimum generating capacity;
the energy storage system comprises an energy storage module, an electrode connection module, an electric energy receiving module and an electric energy releasing module, wherein the energy storage module is an energy storage battery pack and is used for storing and releasing electric energy, the electrode connection module is used for respectively connecting the positive electrode and the negative electrode of a single energy storage battery together, the electric energy receiving module is used for receiving more electric energy generated by the wind driven generator and storing the electric energy in the energy storage battery pack, and the electric energy releasing module is used for transmitting the electric energy in the energy storage battery pack;
the average power generation amount statistics of the wind driven generator in the current month specifically comprises the following steps: firstly, setting the rotating speed of the wind driven generator as a constant value, counting the number of rotations of blades of the wind driven generator, calculating the wind speed occurrence time according to the number of rotations, and calculating the daily output power of the wind driven generator to obtain the daily generated energy; comparing the maximum power generation amount and the minimum power generation amount in the same day of the month, judging the current month wind condition, when the wind condition is stable, taking the extreme value of the current month power generation amount, calculating the extreme value average value by using the extreme value of one year of each month, when the wind condition is unstable, calculating the average value of the monthly power generation amount, and then calculating the average value of one year of each month, wherein the extreme value average value and the average value of each month are used as the energy storage capacity of the energy storage system;
s2: counting the electricity consumption used every day according to the electricity consumption demand, counting the electricity consumption every day, drawing a electricity consumption curve of the current month, calculating an electricity consumption extremum of the current month, calculating a power consumption level average value according to the electricity consumption extremum of twelve months of the whole year, and taking the power consumption average value as the energy storage demand;
the electricity consumption statistics specifically comprises the steps of firstly measuring rated power of electric equipment, connecting the electric equipment with an energy storage system, measuring daily electric energy usage through a universal meter, calculating electricity consumption extreme values of each month according to daily electricity consumption of the current month, calculating electricity consumption level average values according to the maximum daily electricity consumption and the minimum daily electricity consumption extreme values in one year, and obtaining daily average electricity consumption demand, wherein the capacity of an energy storage battery pack is larger than the daily average electricity consumption demand;
s3: the energy storage system in the S1 is an energy storage battery pack formed by connecting single energy storage batteries in parallel, the generating capacity curve in the current month and the electricity consumption curve in the current month are compared, and the electric quantity value of the intersection point of the generating capacity curve and the electricity consumption curve is taken as the primary capacity value of the energy storage battery pack;
the capacity configuration method of the energy storage battery pack comprises the steps of firstly determining a preliminary capacity value of the energy storage battery pack, adding a single energy storage battery according to the daily average electricity consumption demand until the capacity of the energy storage battery pack is larger than the daily average electricity consumption demand, continuing to add the single energy storage battery according to the power generation average value of the wind driven generator, and adapting the capacity of the energy storage battery pack to the power generation average value;
the method comprises the steps of firstly counting the charge and discharge times of an energy storage battery, recording the completion time of each charge and discharge, analyzing the completion time of each charge and discharge, judging whether the charge and discharge time interval is in a step-shaped decline or not, and judging that the energy storage battery pack is damaged;
detecting the single energy storage battery when the energy storage battery is damaged, finding out the single energy storage battery with a problem, replacing the single energy storage battery, and adding the single energy storage battery when the service life of the energy storage battery pack is reduced;
s4: comparing the power generation average value with the power consumption level average value, determining the parallel connection quantity of the single energy storage batteries according to the power generation average value or the power consumption level average value, and using the parallel connection quantity of the single energy storage batteries as final configuration of energy storage capacity, or adding the quantity of the single energy storage batteries for enabling the capacity of the energy storage battery pack to be the same as that of the power generation average value.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310082783.1A CN116365565B (en) | 2023-02-03 | 2023-02-03 | Direct control type energy storage capacity configuration method |
Applications Claiming Priority (1)
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| CN111555329A (en) * | 2020-06-05 | 2020-08-18 | 西安石油大学 | Energy storage capacity configuration method for autonomous micro-grid |
| CN113919620A (en) * | 2021-12-06 | 2022-01-11 | 南通大学 | Day-ahead energy scheduling algorithm for wind-solar storage micro-grid |
| CN115566741A (en) * | 2022-09-26 | 2023-01-03 | 南京理工大学 | Energy storage multi-time scale optimization control method based on LSTM prediction correction |
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| CN108923446A (en) * | 2018-06-07 | 2018-11-30 | 国网天津市电力公司电力科学研究院 | The configuration method of stored energy capacitance in a kind of photovoltaic/energy storage integrated system |
| CN111555329A (en) * | 2020-06-05 | 2020-08-18 | 西安石油大学 | Energy storage capacity configuration method for autonomous micro-grid |
| CN113919620A (en) * | 2021-12-06 | 2022-01-11 | 南通大学 | Day-ahead energy scheduling algorithm for wind-solar storage micro-grid |
| CN115566741A (en) * | 2022-09-26 | 2023-01-03 | 南京理工大学 | Energy storage multi-time scale optimization control method based on LSTM prediction correction |
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