CN117039971A - Intelligent charge and discharge control method and control system for energy storage equipment - Google Patents
Intelligent charge and discharge control method and control system for energy storage equipment Download PDFInfo
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- CN117039971A CN117039971A CN202311295391.XA CN202311295391A CN117039971A CN 117039971 A CN117039971 A CN 117039971A CN 202311295391 A CN202311295391 A CN 202311295391A CN 117039971 A CN117039971 A CN 117039971A
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- 238000004146 energy storage Methods 0.000 title claims abstract description 174
- 238000000034 method Methods 0.000 title claims abstract description 43
- 238000007599 discharging Methods 0.000 claims abstract description 63
- 238000005265 energy consumption Methods 0.000 claims abstract description 38
- 230000002457 bidirectional effect Effects 0.000 claims abstract description 5
- 230000005611 electricity Effects 0.000 claims description 4
- 238000012163 sequencing technique Methods 0.000 claims description 4
- 238000004364 calculation method Methods 0.000 claims description 3
- 230000003247 decreasing effect Effects 0.000 description 3
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 2
- 229910052744 lithium Inorganic materials 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000000725 suspension Substances 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
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0013—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries acting upon several batteries simultaneously or sequentially
- H02J7/0024—Parallel/serial switching of connection of batteries to charge or load circuit
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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
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/007—Regulation of charging or discharging current or voltage
- H02J7/007188—Regulation of charging or discharging current or voltage the charge cycle being controlled or terminated in response to non-electric parameters
- H02J7/007192—Regulation of charging or discharging current or voltage the charge cycle being controlled or terminated in response to non-electric parameters in response to temperature
- H02J7/007194—Regulation of charging or discharging current or voltage the charge cycle being controlled or terminated in response to non-electric parameters in response to temperature of the battery
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- Charge And Discharge Circuits For Batteries Or The Like (AREA)
- Secondary Cells (AREA)
Abstract
The invention relates to the technical field of charge and discharge control of energy storage equipment, in particular to an intelligent charge and discharge control method and a control system of the energy storage equipment. Includes demarcating charge/discharge periods based on peak-to-valley conditions; determining an energy storage device based on a use temperature threshold, and setting a priority discharge queue; calling initial discharge equipment, setting a discharge temperature threshold value, and determining the initial discharge equipment at the discharge temperature threshold value so as to form a limited discharge queue; and estimating the duration of the remaining to-be-discharged, determining the energy storage equipment matched with the energy storage equipment in the priority discharge queue through the energy consumption to-be-discharged and the discharge temperature threshold value, and switching the energy storage equipment into the current discharge equipment to perform discharge operation. And re-estimating the residual discharge time length by limiting the discharge queue and the discharge forming time, so as to determine the energy storage equipment capable of discharging, and provide bidirectional selection for the power supply energy storage equipment required by the power grid, thereby realizing reasonable planning and use of the energy storage equipment.
Description
Technical Field
The invention relates to the technical field of charge and discharge control of energy storage equipment, in particular to an intelligent charge and discharge control method and a control system of the energy storage equipment.
Background
The energy storage device refers to a device for storing electric energy, and the current energy storage device can discharge to the power grid system when the power supply of the power grid system is insufficient, so that the power grid system can operate normally.
However, in the discharging process of the energy storage device, the temperature of the energy storage device can change due to the discharging time length and other reasons, in this case, the risk probability of the operation of the energy storage device can be increased by continuous discharging, and if the discharging state of the energy storage device is in a suspension state due to the situation, the power supply in the power system can be in shortage, so that the operation of the power system is affected.
Therefore, how to reasonably allocate and plan the current energy storage device so that the current energy storage device can provide convenient and safe power supply for the power system is a problem to be solved at present.
Disclosure of Invention
Aiming at the defects existing in the prior art, the invention provides the intelligent charge and discharge control method and the control system thereof for the energy storage equipment, which can effectively solve the problems that the energy storage equipment is unreasonably planned in the charge and discharge process, so that the power supply to a power grid system is inconvenient and the safety condition of the energy storage equipment is influenced.
In order to achieve the above purpose, the invention is realized by the following technical scheme:
the invention provides an intelligent charge and discharge control method of energy storage equipment, which comprises the following steps:
s1, defining a charging/discharging period based on electricity consumption peak-valley conditions, and enabling the energy storage equipment to conduct charging/discharging operation in the charging/discharging period;
s2, collecting current temperature information of the energy storage equipment, setting a using temperature threshold, determining the energy storage equipment based on the using temperature threshold, setting a priority discharge queue according to the using temperature threshold, and sequencing the current temperature through the energy storage equipment to regenerate the priority discharge queue;
s3, calling initial discharge equipment in the priority discharge queue, setting a discharge temperature threshold of the energy storage equipment, determining the initial discharge equipment with the temperature being in the discharge temperature threshold in the discharge process, limiting the continuous discharge of the initial discharge equipment, and forming a limiting discharge queue;
s4, estimating the remaining duration of the to-be-discharged according to the charging/discharging time period, determining the energy consumption to be discharged according to the duration of the to-be-discharged, determining the energy storage equipment matched with the energy storage equipment in the priority discharging queue through the energy consumption to be discharged and the discharging temperature threshold, and switching the energy storage equipment into the current discharging equipment to perform discharging operation.
Further, the discharge temperature threshold is a threshold for safe discharge of the energy storage device.
Further, when the limiting discharge queue is formed, the energy storage device is subjected to successive sequences in the limiting discharge queue according to the charge state of the energy storage device so as to regenerate the limiting discharge queue, wherein:
and determining the unlimited time of the limited discharge queue, so that the limited discharge queue and the priority discharge queue form a bidirectional retrieving energy storage device queue.
Further, the duration to be discharged is evaluated by a difference algorithm, and the algorithm formula is as follows:in (1) the->For the duration of the discharge to be started, +.>For the discharge duration of the discharge period under the peak valley, +.>For the duration of the discharge of the initial discharge device.
Further, the energy consumption to be discharged is determined by a product value algorithm, and the algorithm comprises the following steps:
solving the discharge electric quantity consumed when the energy storage device discharges:in (1) the->For the initial charge of the energy storage device, +.>For the remaining amount of the energy storage device when stopping discharging, +.>Is the discharge electric quantity;
solving the discharge speed of the energy storage equipment:in (1) the->For the discharge time length in the discharge process of the energy storage device in the peak valley, the energy storage device is +.>Is the discharge speed;
solving the duration time to be discharged of the power grid:in (1) the->For the discharge duration of the overall discharge period in the peak valley of the power grid, +.>For the duration of the discharge to be made;
solving the required energy consumption to be discharged of the power grid:wherein P is the energy consumption to be discharged required by the power grid.
Further, the method for determining the energy storage device matched with the energy consumption to be discharged in the priority discharge queue is as follows:
the energy storage equipment in the priority discharge queue is sequenced from high to low according to the charge state, so that the priority discharge queue is regenerated;
the energy storage equipment which has the same energy consumption as the energy to be discharged and does not exceed a discharge temperature threshold value in the duration of the to-be-discharged is predetermined in the priority discharge queue, and is switched into the current discharge equipment;
when no energy storage device which is the same as the energy consumption to be discharged and does not exceed the discharge temperature threshold value in the duration of the to-be-discharged exists in the priority discharge queue, the energy consumption to be discharged or the discharge temperature threshold value is set as a switching critical threshold value, the switching critical threshold value is used for determining the energy storage device, and the energy storage device is switched into the current discharge device.
Further, the calculation formula for the current discharge device reaching the discharge temperature threshold is as follows:
solving the temperature change value of the current discharge equipment at each moment in the discharge state:in (1) the->For the energy storage device at a certain moment in time temperature +.>For the temperature of the energy storage device at a certain moment before it, t is +.>Andc is the temperature change value at each moment;
determining sustainable discharge duration of the current discharge equipment in a discharge state:in (1) the->Is a sustainable discharge duration;
judging the condition between the temperature reached by the current discharge equipment under the sustainable discharge duration and a discharge temperature threshold value:wherein Ot is the temperature reached by the current discharge device under the sustainable discharge time length, according to the formulaAnd judging whether Ot exceeds a discharge temperature threshold, wherein V is the discharge temperature threshold.
The invention also provides a control system of the intelligent charge and discharge control method of the energy storage equipment, which at least comprises the following steps:
the charging/discharging period presetting module is used for defining a charging/discharging period so that the energy storage device performs charging/discharging operation in the charging/discharging period;
the discharge condition control module sets the energy storage setting as a priority discharge queue based on the temperature information, selects initial discharge equipment, collects the initial discharge equipment with the temperature at a discharge temperature threshold value, limits continuous discharge of the initial discharge equipment and forms a limited discharge queue;
and the discharge device switching module is used for determining the duration time of the remaining discharge to be determined based on limiting the initial discharge device, determining the energy storage device in the priority discharge queue again, and switching the energy storage device into the current discharge device.
Compared with the prior art, the technical scheme provided by the invention has the following beneficial effects:
the energy storage equipment capable of discharging is collected based on temperature information to form a priority discharge queue, the energy storage equipment is pre-extracted from the priority discharge queue to discharge, the temperature condition of the energy storage equipment is monitored in real time in the discharging operation to extract the discharge equipment reaching the limit discharge temperature, the discharge equipment is formed into a limit discharge queue again, the residual time required to discharge is estimated again based on the limit discharge queue and the limit discharge forming time, the energy storage equipment capable of discharging in the priority discharge queue is determined again, the energy storage equipment is combined with the priority discharge queue according to the limit discharge queue unlimited time, bidirectional selection is provided for power supply energy storage equipment required by a power grid, reasonable planning and use of the energy storage equipment are achieved, and meanwhile safety of the energy storage equipment in the charging and discharging process in the current power grid is improved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below. It is evident that the drawings in the following description are only some embodiments of the present invention and that other drawings may be obtained from these drawings without inventive effort for a person of ordinary skill in the art.
FIG. 1 is a flow chart of the overall method of embodiment 1 of the present invention;
FIG. 2 is a flowchart of a method for determining a current discharge apparatus according to embodiment 1 of the present invention;
FIG. 3 is a block diagram of a control system according to embodiment 1 of the present invention;
fig. 4 is a flowchart of a method for determining a current discharge apparatus in embodiment 2 of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention more clear, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. It will be apparent that the described embodiments are some, but not all, embodiments of the invention. 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.
The invention is further described below with reference to examples.
Example 1 (see fig. 1-3): the intelligent charge and discharge control method of the energy storage equipment comprises the following steps:
s1, defining a charging/discharging period based on a power consumption peak-valley condition, enabling the energy storage device to conduct charging/discharging operation in the charging/discharging period, and setting the power consumption peak-valley time as the charging/discharging period by collecting the current power consumption peak-valley condition, so that the current energy storage device can conduct charging/discharging operation under appropriate conditions to reasonably control power consumption in a power system;
s2, collecting current temperature information of the energy storage equipment, setting a using temperature threshold, determining the energy storage equipment based on the using temperature threshold, setting a priority discharge queue, sequencing the current temperature through the energy storage equipment to regenerate the priority discharge queue, and setting the using temperature threshold for the energy storage equipment by collecting the temperature information of the energy storage equipment, namely, when the situation that the electricity consumption peak valley is a juncture exists, namely, the current period of the energy storage equipment needs to be discharged in the next period after the charging operation, for example: the charging period is 16-17 points, but the charging period is 17-20 points, so that the energy storage equipment with the temperature lower than the using temperature threshold is acquired by setting the using temperature threshold, a priority discharging queue is established by the acquired energy storage equipment, and the priority discharging queue is ordered from high to low according to the temperature of the energy storage equipment, so that when the initial discharging equipment is selected in the priority discharging queue (the priority discharging equipment is selected in the priority discharging queue when the discharging equipment is selected), the discharging is selected according to the temperature of the energy storage equipment from low to high, the problem that the temperature of the energy storage equipment is excessively increased due to the fact that the charging temperature is excessively high but the continuous discharging is needed is solved, the safety of the energy storage equipment in the discharging process is improved, and for the energy storage equipment with the higher temperature which is not selected in the priority discharging queue, the unselected energy storage equipment can be used for discharging after a certain time after discharging operation, and more reasonable charging/discharging control of the energy storage equipment is realized;
s3, the initial discharge equipment is called in the priority discharge queue, a discharge temperature threshold value of the energy storage equipment is set, the discharge temperature threshold value is a safety discharge threshold value of the energy storage equipment (equipment can be carried out according to a normally set temperature threshold value, for example, 60 ℃), the initial discharge equipment with the temperature being in the discharge temperature threshold value in the discharge process is determined, the continuous discharge of the initial discharge equipment is limited, a limited discharge queue is formed, the initial discharge equipment with the discharge temperature threshold value in the discharge process is determined again through the set discharge temperature threshold value, the potential safety hazard brought by the energy storage equipment in the discharge process can be reduced again through limiting the continuous discharge operation of the initial discharge equipment (because the current energy storage equipment is usually a lithium battery, and the lithium battery has extremely high operating temperature, the potential safety hazard can be generated), so that the limited discharge queue can be formed based on the initial discharge equipment, a large number of initial discharge equipment with higher temperature is limited, and the safety of a discharge system is relatively improved;
s4, according to the charge/discharge time period, the remaining duration to be discharged is estimated, the energy consumption to be discharged is determined according to the duration to be discharged, the energy storage device matched with the energy storage device is determined in the priority discharge queue through the energy consumption to be discharged and the discharge temperature threshold, the energy storage device is switched to the current discharge device to perform discharge operation, the energy consumption to be discharged (equivalent to the charge state) is synchronously determined through estimating the duration to be discharged in the current electricity valley peak, accordingly, the energy storage device matched with the energy storage device is determined in the priority discharge queue again, the energy storage device is switched to the current discharge device to perform discharge operation, and therefore the operation safety of the energy storage device in the current power grid under the charge/discharge time period is improved, and reasonable charge/discharge operation is synchronously achieved.
In summary, the method for regulating and controlling the charge/discharge of the current energy storage device is shown, and for the purpose of describing the present invention in detail, the method specifically comprises the following steps:
when the limiting discharge queue is formed, the energy storage device is subjected to successive sequences in the limiting discharge queue according to the charge state of the energy storage device so as to regenerate the limiting discharge queue, wherein:
the limiting discharge queue and the priority discharge queue form a bidirectional retrieving energy storage device queue by determining the limiting discharge queue unlimited time; the limiting discharge queue can be regenerated according to the high-low state of charge, the limiting state can be released after the energy storage device in the limiting discharge queue is cooled (the time for releasing the limiting state can be determined according to the time for limiting the temperature of the discharge queue to reach the temperature before use, the determining mode can be determined in the same way as the mode for determining the change value of the temperature of the energy storage device per hour, when the limiting discharge queue is cooled to the temperature before use, for example, 60 ℃ after use and 20 ℃ before use, the time required for cooling to 20 ℃ can be determined according to the change value of the temperature per hour, the time recorded in the historical information can also be determined according to the time recorded in the prior history information, the time can be selected according to the state of charge in the limiting discharge queue, the two-way energy storage device queue can be formed through the priority discharge queue and the limiting discharge queue, the internal energy storage devices can be sequentially selected according to the state of charge, and the two-way energy storage device queue can be more conveniently and rapidly extracted from the two-way energy storage device queue, and the threshold value of the energy storage device can be conveniently and rapidly extracted from the two-way energy storage device queue (namely, the threshold value of the energy storage device can be conveniently and rapidly switched to the energy storage device can be conveniently and rapidly switched to the power grid when the threshold value is conveniently and conveniently determined).
The duration to be discharged is evaluated by a difference algorithm, and the algorithm formula is as follows:in (1) the->For the duration of the discharge to be started, +.>For the discharge duration of the discharge period under the peak valley, +.>For the duration of the discharge of the initial discharge device.
The energy consumption to be discharged is determined by a product value algorithm, and the algorithm comprises the following steps:
solving the discharge electric quantity consumed when the energy storage device discharges:in (1) the->For the initial charge of the energy storage device, +.>For the remaining amount of the energy storage device when stopping discharging, +.>Is the discharge electric quantity;
solving the discharge speed of the energy storage equipment:in (1) the->For the discharge time length in the discharge process of the energy storage device in the peak valley, the energy storage device is +.>For puttingAn electrical speed;
solving the duration time to be discharged of the power grid:in (1) the->For the discharge duration of the overall discharge period in the peak valley of the power grid, +.>For the duration of the discharge to be made;
to sum up, finally, the required energy consumption to be discharged of the power grid is obtained:in the formula, P is the electric energy consumption to be discharged required by the power grid, and the electric energy consumption to be discharged in the scheme refers to the electric quantity value required by the power grid system.
The method for determining the energy storage equipment matched with the energy consumption to be discharged in the priority discharge queue comprises the following steps:
s401, carrying out a sequence on energy storage equipment in the priority discharge queue from high to low according to the state of charge so as to regenerate the priority discharge queue;
s402, energy storage equipment which is the same as the energy consumption to be discharged and does not exceed a discharge temperature threshold value in the duration of the to-be-discharged is predetermined in a priority discharge queue, and is switched into current discharge equipment;
the calculation formula for the current discharge equipment reaching the discharge temperature threshold value is as follows:in (1) the->For the energy storage device at a certain moment in time temperature +.>For the temperature of the energy storage device at a certain moment before it, t is +.>Andthe time between c is the temperature change value at each time, and it is worth noting that the time in this embodiment refers to a time point, for example, 18 points, and examples are as follows: />Temperature at 22 o' clock>At a temperature of 18, t is the time between 18 and 22, i.e. four hours, from which +.>And->The temperature change at each time point is obtained, and the temperature change value (the change value of the temperature rise is obtained here) at each time point is recorded as each hour according to the above scheme.
Determining sustainable discharge duration of the current discharge equipment in a discharge state:in (1) the->Is a sustainable discharge duration;
judging the condition between the temperature reached by the current discharge equipment under the sustainable discharge duration and a discharge temperature threshold value:wherein Ot is the temperature reached by the current discharge device under the sustainable discharge time length, according to the formulaAnd judging whether Ot exceeds a discharge temperature threshold, wherein V is the discharge temperature threshold.
According to the formula, the energy storage device which is the same as the energy consumption to be discharged and does not exceed the discharge temperature threshold value in the duration of the to-be-discharged is preset in the priority discharge queue, so that the current discharge device can be set as the energy storage device, the complexity of replacing discharge setting again in the follow-up process is avoided, the discharge temperature threshold value in the duration of the to-be-discharged is not exceeded, namely, the temperature generated by the current discharge device under the maximum discharge time is less than or equal to the discharge temperature threshold value, and therefore, the more convenient discharge operation can be realized without switching other energy storage devices and limiting discharge of the energy storage device.
The invention also provides a control system of the intelligent charge and discharge control method of the energy storage equipment, which at least comprises the following steps:
the charging/discharging period presetting module is used for defining a charging/discharging period so that the energy storage device performs charging/discharging operation in the charging/discharging period;
the discharge condition control module sets the energy storage setting as a priority discharge queue based on the temperature information, selects initial discharge equipment, collects the initial discharge equipment with the temperature at a discharge temperature threshold value, limits continuous discharge of the initial discharge equipment and forms a limited discharge queue;
and the discharge device switching module is used for determining the duration time of the remaining discharge to be determined based on limiting the initial discharge device, determining the energy storage device in the priority discharge queue again, and switching the energy storage device into the current discharge device.
The implementation of the above system based on the method is not described herein, and reference is made to the above method.
Example 2
Referring to fig. 4, when there is no energy storage device in embodiment 1 (i.e. an energy storage device that is the same as the energy consumption to be discharged and does not exceed the discharge temperature threshold for the duration of the to-be-discharged), the method for selecting an energy storage device according to the energy consumption to be discharged or the discharge temperature threshold is provided again in this embodiment, which is specifically as follows:
s403, when no energy storage device which is the same as the energy consumption to be discharged and does not exceed the discharge temperature threshold value in the duration of the to-be-discharged exists in the priority discharge queue, setting the energy consumption to be discharged or the discharge temperature threshold value as a switching critical threshold value, determining the energy storage device by using the switching critical threshold value, and switching the energy storage device into the current discharge device, wherein the method comprises the following steps:
s4031, when the energy consumption to be discharged and the discharge temperature threshold value are adopted, the state of charge of the energy storage device is higher than the energy consumption to be discharged and the temperature is lower than the discharge temperature threshold value, so that the situation that other energy storage devices need to be switched for discharging frequently in the follow-up process can be reduced;
s4032, selecting the time-consuming to-be-discharged energy in a manner of decreasing the to-be-discharged energy consumption, and completely discharging the to-be-discharged energy consumption so as to facilitate the subsequent charging operation;
s4033, when a discharge temperature threshold is adopted, selecting in a mode of decreasing the discharge temperature threshold (decreasing means that the discharge temperature threshold is used as a rated value, and energy storage equipment with the discharge temperature threshold is lower than the discharge temperature threshold, and the electric energy consumption to be discharged is the same as the discharge temperature threshold) so as to reduce the subsequent frequent need of switching the discharge of other energy storage equipment;
it should be noted that, when the energy storage device is determined by switching the critical threshold (the energy consumption to be discharged and the discharge temperature threshold), the determination is sequentially performed according to the above sequence.
The above embodiments are only for illustrating the technical solution of the present invention, and are not limiting; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; these modifications or substitutions do not depart from the essence of the corresponding technical solutions from the protection scope of the technical solutions of the embodiments of the present invention.
Claims (8)
1. The intelligent charge and discharge control method of the energy storage equipment is characterized by comprising the following steps of:
s1, defining a charging/discharging period based on electricity consumption peak-valley conditions, and enabling the energy storage equipment to conduct charging/discharging operation in the charging/discharging period;
s2, collecting current temperature information of the energy storage equipment, setting a using temperature threshold, determining the energy storage equipment based on the using temperature threshold, setting a priority discharge queue according to the using temperature threshold, and sequencing the current temperature through the energy storage equipment to regenerate the priority discharge queue;
s3, calling initial discharge equipment in the priority discharge queue, setting a discharge temperature threshold of the energy storage equipment, determining the initial discharge equipment with the temperature being in the discharge temperature threshold in the discharge process, limiting the continuous discharge of the initial discharge equipment, and forming a limiting discharge queue;
s4, estimating the remaining duration of the to-be-discharged according to the charging/discharging time period, determining the energy consumption to be discharged according to the duration of the to-be-discharged, determining the energy storage equipment matched with the energy storage equipment in the priority discharging queue through the energy consumption to be discharged and the discharging temperature threshold, and switching the energy storage equipment into the current discharging equipment to perform discharging operation.
2. The intelligent charge and discharge control method of an energy storage device according to claim 1, wherein the discharge temperature threshold is a threshold for safe discharge of the energy storage device.
3. The intelligent charge-discharge control method of an energy storage device of claim 1, wherein the limiting discharge queue is formed by sequentially sequencing the energy storage device within the limiting discharge queue according to a state of charge of the energy storage device to regenerate the limiting discharge queue, wherein:
and determining the unlimited time of the limited discharge queue, so that the limited discharge queue and the priority discharge queue form a bidirectional retrieving energy storage device queue.
4. The intelligent charge-discharge control method of an energy storage device according to claim 1, wherein the duration to be discharged is evaluated by a difference algorithm, and the algorithm formula is as follows:in (1) the->To be put awayElectric duration, +.>For the discharge duration of the discharge period under the peak valley, +.>For the duration of the discharge of the initial discharge device.
5. The intelligent charge and discharge control method of an energy storage device according to claim 4, wherein the energy consumption to be discharged is determined by a product value algorithm, and the algorithm comprises the following steps:in (1) the->For the initial charge of the energy storage device, +.>For the remaining amount of the energy storage device when stopping discharging, +.>Is the discharge electric quantity;
in (1) the->For the discharge time length in the discharge process of the energy storage device in the peak valley, the energy storage device is +.>Is the discharge speed;
in (1) the->For the discharge duration of the overall discharge period in the peak valley of the power grid, +.>For the duration of the discharge to be made;
wherein P is the energy consumption to be discharged required by the power grid.
6. The method for controlling intelligent charging and discharging of an energy storage device according to claim 1, wherein the method for determining the energy storage device in the priority discharging queue matched with the energy consumption to be charged is as follows:
the energy storage equipment in the priority discharge queue is sequenced from high to low according to the charge state, so that the priority discharge queue is regenerated;
the energy storage equipment which has the same energy consumption as the energy to be discharged and does not exceed a discharge temperature threshold value in the duration of the to-be-discharged is predetermined in the priority discharge queue, and is switched into the current discharge equipment;
when no energy storage device which is the same as the energy consumption to be discharged and does not exceed the discharge temperature threshold value in the duration of the to-be-discharged exists in the priority discharge queue, the energy consumption to be discharged or the discharge temperature threshold value is set as a switching critical threshold value, the switching critical threshold value is used for determining the energy storage device, and the energy storage device is switched into the current discharge device.
7. The intelligent charge and discharge control method of an energy storage device according to claim 6, wherein a calculation formula for the current discharge device reaching a discharge temperature threshold is as follows:in (1) the->For the energy storage device at a certain moment in time temperature +.>For the temperature of the energy storage device at a certain moment before it, t is +.>And->C is the temperature change value at each moment;
in (1) the->Is a sustainable discharge duration;
wherein Ot is the temperature reached by the current discharge device under the sustainable discharge time length, according to the formulaAnd judging whether Ot exceeds a discharge temperature threshold, wherein V is the discharge temperature threshold.
8. A control system for an intelligent charge and discharge control method for an energy storage device according to claim 1, comprising at least:
the charging/discharging period presetting module is used for defining a charging/discharging period so that the energy storage device performs charging/discharging operation in the charging/discharging period;
the discharge condition control module sets the energy storage setting as a priority discharge queue based on the temperature information, selects initial discharge equipment, collects the initial discharge equipment with the temperature at a discharge temperature threshold value, limits continuous discharge of the initial discharge equipment and forms a limited discharge queue;
and the discharge device switching module is used for determining the duration time of the remaining discharge to be determined based on limiting the initial discharge device, determining the energy storage device in the priority discharge queue again, and switching the energy storage device into the current discharge device.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202311295391.XA CN117039971B (en) | 2023-10-09 | 2023-10-09 | Intelligent charge and discharge control method and control system for energy storage equipment |
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| CN202311295391.XA CN117039971B (en) | 2023-10-09 | 2023-10-09 | Intelligent charge and discharge control method and control system for energy storage equipment |
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| CN117039971A true CN117039971A (en) | 2023-11-10 |
| CN117039971B CN117039971B (en) | 2024-01-26 |
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Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20130119939A1 (en) * | 2011-11-15 | 2013-05-16 | Minoru Yonezawa | Charge/discharge scheduling system and charge/discharge scheduling method |
| CN104167751A (en) * | 2014-07-18 | 2014-11-26 | 上海电力学院 | Charging-discharging-storage integrated power station dispatching-based microgrid economic operation method |
| DE102013224509A1 (en) * | 2013-11-29 | 2015-06-03 | Robert Bosch Gmbh | An electrical energy storage device and method of operating an electrical energy storage device |
| CN108321827A (en) * | 2018-03-15 | 2018-07-24 | 深圳市普禄科智能检测设备有限公司 | Backup battery energy storage discharge control system and method |
| CN109713703A (en) * | 2019-03-06 | 2019-05-03 | 华北电力大学 | A kind of energy-storage system dispatching method based on battery rotation |
| CN110880776A (en) * | 2019-11-18 | 2020-03-13 | 国网浙江省电力有限公司 | Method and device for controlling charging and discharging of energy storage equipment in energy storage system |
| CN111738518A (en) * | 2020-06-24 | 2020-10-02 | 国家电网公司西南分部 | Electric vehicle charging and discharging scheduling method based on average discharge rate |
| WO2022252940A1 (en) * | 2021-06-02 | 2022-12-08 | 国网智慧能源交通技术创新中心(苏州)有限公司 | Electric vehicle charging and discharging control method based on v2g charging system |
-
2023
- 2023-10-09 CN CN202311295391.XA patent/CN117039971B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20130119939A1 (en) * | 2011-11-15 | 2013-05-16 | Minoru Yonezawa | Charge/discharge scheduling system and charge/discharge scheduling method |
| DE102013224509A1 (en) * | 2013-11-29 | 2015-06-03 | Robert Bosch Gmbh | An electrical energy storage device and method of operating an electrical energy storage device |
| CN104167751A (en) * | 2014-07-18 | 2014-11-26 | 上海电力学院 | Charging-discharging-storage integrated power station dispatching-based microgrid economic operation method |
| CN108321827A (en) * | 2018-03-15 | 2018-07-24 | 深圳市普禄科智能检测设备有限公司 | Backup battery energy storage discharge control system and method |
| CN109713703A (en) * | 2019-03-06 | 2019-05-03 | 华北电力大学 | A kind of energy-storage system dispatching method based on battery rotation |
| CN110880776A (en) * | 2019-11-18 | 2020-03-13 | 国网浙江省电力有限公司 | Method and device for controlling charging and discharging of energy storage equipment in energy storage system |
| CN111738518A (en) * | 2020-06-24 | 2020-10-02 | 国家电网公司西南分部 | Electric vehicle charging and discharging scheduling method based on average discharge rate |
| WO2022252940A1 (en) * | 2021-06-02 | 2022-12-08 | 国网智慧能源交通技术创新中心(苏州)有限公司 | Electric vehicle charging and discharging control method based on v2g charging system |
Non-Patent Citations (1)
| Title |
|---|
| 凌凯 等: "光伏无人机智能充电站内太阳能蓄电池组充放电控制的研究", 《农业机械与装备》, pages 144 - 148 * |
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