CN110994681A - Energy storage control system for realizing photovoltaic consumption and photovoltaic consumption method - Google Patents

Energy storage control system for realizing photovoltaic consumption and photovoltaic consumption method Download PDF

Info

Publication number
CN110994681A
CN110994681A CN201911310530.5A CN201911310530A CN110994681A CN 110994681 A CN110994681 A CN 110994681A CN 201911310530 A CN201911310530 A CN 201911310530A CN 110994681 A CN110994681 A CN 110994681A
Authority
CN
China
Prior art keywords
charging
power
battery pack
photovoltaic
discharging
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.)
Pending
Application number
CN201911310530.5A
Other languages
Chinese (zh)
Inventor
张沛霖
陈烨然
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Nanjing Sixiang New Energy Technology Co ltd
Original Assignee
Nanjing Sixiang New Energy Technology Co ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Nanjing Sixiang New Energy Technology Co ltd filed Critical Nanjing Sixiang New Energy Technology Co ltd
Priority to CN201911310530.5A priority Critical patent/CN110994681A/en
Publication of CN110994681A publication Critical patent/CN110994681A/en
Pending legal-status Critical Current

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
    • H02J3/38—Arrangements for parallely feeding a single network by two or more generators, converters or transformers
    • H02J3/46—Controlling of the sharing of output between the generators, converters, or transformers
    • H02J3/48—Controlling the sharing of the in-phase component
    • 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
    • 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
    • Y02E70/00—Other energy conversion or management systems reducing GHG emissions
    • Y02E70/30—Systems combining energy storage with energy generation of non-fossil origin

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Charge And Discharge Circuits For Batteries Or The Like (AREA)
  • Secondary Cells (AREA)

Abstract

An energy storage control system and a photovoltaic absorption method for realizing photovoltaic absorption are provided, the energy storage control system comprises: the system comprises at least one battery pack, at least one slave control module, a photovoltaic power generation module, an ammeter module and a master control module; the slave control module detects whether the battery pack connected with the slave control module meets the charging and discharging conditions, and when the corresponding battery meets the charging and discharging conditions, a first driving signal is generated; the photovoltaic power generation module is used for carrying out photovoltaic power generation; the ammeter module obtains a total active power value; the main control module compares the power consumption of the load with the photovoltaic power generation power of the photovoltaic power generation module to obtain a comparison result, and generates a charge and discharge control signal according to the comparison result, the first driving signal and the total active power value; the slave control module controls the battery corresponding to the charging and discharging conditions to charge or discharge according to the charging and discharging signals; the energy storage control system can realize the photovoltaic absorption function without modifying a local circuit system, and has a wide application range.

Description

Energy storage control system for realizing photovoltaic consumption and photovoltaic consumption method
Technical Field
The application belongs to the technical field of photovoltaic power generation, and particularly relates to an energy storage control system and a photovoltaic absorption method for realizing photovoltaic absorption.
Background
With the increasing demand of power utilization in the industrial society, technicians gradually use various power generation modes to meet the actual power utilization demand of people; by taking photovoltaic power generation as an example, a large amount of stable electric energy can be generated through the photovoltaic power generation to guarantee the power supply safety and the power supply stability of electronic equipment, and the photovoltaic power generation belongs to clean electric energy, converts the light energy of the nature into chemical energy and outputs the chemical energy in the form of electric energy, so that the pollution to the environment is avoided; therefore, the photovoltaic power generation is universally applicable to different industrial technical fields, the power utilization cost in the industrial production process is saved, and higher benefits are provided for users.
However, in the process of performing photoelectric conversion in a large-scale photovoltaic power storage station, the photovoltaic power generation is easily interfered by external environmental factors, such as illumination intensity, wind power, humidity and the like, so that the electric energy output by the photovoltaic power generation also has great fluctuation, and the amplitude of the electric energy output by the photovoltaic power generation also jumps to a great extent, so that technicians need to perform photovoltaic absorption on the photovoltaic power generation to ensure the stability and reliability of the electric energy output by the photovoltaic power storage station; however, when photovoltaic consumption is performed on a photovoltaic power storage station in the conventional technology, the inside of a local power system needs to be modified, a station-level scheduling instruction needs to be received in real time, the operation is complex, and the photovoltaic consumption mode cannot be applied to the premise that station-level scheduling does not exist.
Disclosure of Invention
In view of this, the embodiment of the application provides an energy storage control system and a photovoltaic consumption method for realizing photovoltaic consumption, and aims to solve the problems that when the photovoltaic consumption is carried out by the conventional technical scheme, the internal structure of a local power system needs to be modified, the operation is complex, the conventional photovoltaic consumption mode cannot be generally applied, and the practical value is low.
A first aspect of an embodiment of the present application provides an energy storage control system for realizing photovoltaic absorption, which is connected to a load, and includes:
at least one battery pack, wherein each battery pack comprises a plurality of batteries connected in series in sequence;
the slave control modules are connected with the battery packs in a one-to-one correspondence mode, and are used for acquiring the charge states of the battery packs connected with the slave control modules, judging whether the battery packs meet charge and discharge conditions according to the charge states, and generating a first driving signal when the battery packs meet the charge and discharge conditions;
the photovoltaic power generation module is used for carrying out photovoltaic power generation and generating power supply electric energy so as to supply power to the load and/or charge each battery pack;
the electric meter module is used for acquiring a total active power value, wherein the total active power value comprises active power of all battery packs meeting charging and discharging conditions, power consumption power of the load and photovoltaic power generation power of the photovoltaic power generation module;
the master control module is connected with the ammeter module and each slave control module, and is used for comparing the power consumption of the load with the photovoltaic power generation power of the photovoltaic power generation module to obtain a comparison result and generating a charging and discharging control signal according to the comparison result, the first driving signal and the total active power value;
the slave control module is also used for controlling the power supply electric energy to charge the battery pack corresponding to the charging and discharging conditions according to the charging and discharging signals, or controlling the battery pack corresponding to the charging and discharging conditions to discharge according to the charging and discharging signals so as to supply power to the load.
In one embodiment, the method further comprises:
and the transformer module is connected with the power grid, the ammeter module, the photovoltaic power generation module, the load and each slave control module and used for outputting the power supply electric energy to the power grid when the slave control module controls the power supply electric energy to charge the battery pack corresponding to the charging and discharging conditions according to the charging and discharging signals.
A second aspect of the embodiments of the present application provides a photovoltaic consumption method based on the energy storage control system as described above, including:
the slave control module is used for collecting the charge state of the battery pack connected with the slave control module, detecting whether the battery pack meets the charge and discharge conditions, and generating a first driving signal when the battery pack is judged to meet the charge and discharge conditions;
the method comprises the following steps of performing photovoltaic power generation by using a photovoltaic power generation module to generate power supply electric energy so as to supply power to a load and/or charge each battery pack;
acquiring a total active power value by adopting the ammeter module, wherein the total active power value comprises active power of all battery packs meeting charging and discharging conditions, power consumption power of the load and photovoltaic power generation power of the photovoltaic power generation module;
comparing the power consumption of the load with the photovoltaic power generation power of the photovoltaic power generation module by adopting the main control module to obtain a comparison result, and generating a charge-discharge control signal according to the comparison result, the first driving signal and the total active power value;
and the slave control module is adopted to control the power supply electric energy to charge the battery pack corresponding to the charging and discharging conditions according to the charging and discharging signals, or control the battery pack corresponding to the charging and discharging conditions to discharge so as to supply power to the load according to the charging and discharging signals.
In one embodiment, the method includes comparing, by using the main control module, the power consumption of the load with the photovoltaic power generation power of the photovoltaic power generation module to obtain a comparison result, and generating a charge and discharge control signal according to the comparison result, the first driving signal, and the total active power value, and specifically includes:
comparing the power consumption of the load with the photovoltaic power generation power of the photovoltaic power generation module by adopting the main control module; if the power consumption power of the load is greater than the photovoltaic power generation power of the photovoltaic power generation module, generating a discharge control signal according to the first driving signal and the total active power value; if the power consumption of the load is less than the photovoltaic power generation power of the photovoltaic power generation module, generating a charging control signal according to the first driving signal and the total active power value;
the slave control module is adopted to control the power supply electric energy to charge the battery pack which corresponds to the charging and discharging conditions according to the charging control signal;
and controlling the corresponding battery pack meeting the charging and discharging conditions to discharge according to the discharging control signal by adopting the slave control module so as to supply power to the load.
In one embodiment, the controlling the power supply energy to charge the battery pack corresponding to the charge and discharge condition by using the slave control module according to the charge and discharge signal specifically includes:
calculating the first charging power of each battery pack meeting the charging and discharging conditions by adopting the main control module;
wherein the calculation formula of the first charging power is as follows:
Pin＝P/N
in the above formula, P is the total active power value, N is the number of all battery packs meeting the charge-discharge condition, and P isinThe first charging power is used;
and controlling the power supply electric energy to charge the battery pack corresponding to the charging and discharging conditions according to the first charging power by adopting the slave control module according to the charging control signal.
In one embodiment, the controlling, by the slave control module, the battery pack corresponding to the charge and discharge condition to discharge according to the discharge control signal to supply power to the load includes:
calculating the first discharge power of each battery pack meeting the charge-discharge condition by adopting the main control module;
wherein the calculation formula of the first discharge power is as follows:
POUT＝P/N
in the above formula, P is the total active power value, N is the number of all battery packs meeting the charge-discharge condition, and P isOUTThe first discharge power;
and controlling the corresponding battery pack meeting the charging and discharging conditions to discharge according to the first discharging power by adopting the slave control module according to the discharging control signal so as to supply power to the load.
In one embodiment of the foregoing method, before the slave control module is used to control the power supply electric energy according to the charge and discharge signal to charge the battery pack corresponding to the charge and discharge condition, or before the slave control module is used to control the battery pack corresponding to the charge and discharge condition to discharge according to the charge and discharge signal to supply power to the load, the photovoltaic power consumption method further includes:
generating a detection driving instruction by adopting the master control module, and sending the detection driving instruction to the slave control module;
detecting whether the corresponding battery pack meeting the charging and discharging conditions is in a normal state or not by adopting the slave control module according to the detection driving instruction; and if the battery pack corresponding to the charging and discharging conditions is judged to be in a normal state, the slave control module is adopted to control the power supply electric energy to charge the battery pack corresponding to the charging and discharging conditions according to the charging and discharging signals, or control the battery pack corresponding to the charging and discharging conditions to discharge so as to supply power to the load according to the charging and discharging signals.
In one embodiment, the acquiring, by the slave control module, the state of charge of the battery pack connected to the slave control module, and detecting whether the battery pack satisfies a charge-discharge condition specifically includes:
the slave control module is adopted to collect the charge state of the battery pack connected with the slave control module in real time so as to obtain the residual electric quantity of the battery pack;
detecting whether the battery pack connected with the slave control module meets a safe charging condition or not according to the difference value between the residual electric quantity of the battery pack and the preset charging electric quantity by adopting the slave control module;
and detecting whether the battery pack connected with the slave control module meets a safe discharge condition or not according to the difference value between the residual electric quantity of the battery pack and the preset discharge electric quantity by adopting the slave control module.
In one embodiment, when the slave control module is used for controlling the power supply electric energy to charge the battery pack corresponding to the charging and discharging conditions according to the charging and discharging signals, the photovoltaic consumption method includes:
and outputting the power supply electric energy to a power grid.
In one embodiment, the method for controlling the battery pack meeting the charging and discharging conditions to discharge to supply power to the load by using the slave control module according to the charging and discharging signal further includes:
and feeding the discharging electric energy output by the battery pack meeting the charging and discharging conditions back to the power grid and the load according to a preset proportion.
The energy storage control system for realizing photovoltaic consumption supplies power to the load through the photovoltaic power generation modules, and carries out photovoltaic consumption on the electric energy output by the photovoltaic power generation modules according to the actual charge-discharge state of each battery pack so as to ensure the safety and the sensitivity of photovoltaic power generation to the load; the corresponding battery pack is subjected to charge control or discharge control according to the actual charge-discharge performance of each battery pack, the power consumption of the load and the photovoltaic power generation power of the photovoltaic discharge module, so that the charge-discharge safety and reliability of each battery pack are guaranteed, the high-efficiency photovoltaic absorption function can be realized, and the operation is simple and convenient; therefore, the energy storage control system in the embodiment flexibly controls the charging or discharging of the battery pack on the premise that a local power system is not required to be modified, and completes the photovoltaic consumption function of the photovoltaic power generation module, so that the photovoltaic consumption mode in the energy storage control system can be universally applied to different industrial technical fields, and the practical value is high.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
Fig. 1 is a schematic structural diagram of an energy storage control system for implementing photovoltaic absorption according to an embodiment of the present disclosure;
fig. 2 is a specific flowchart of a photovoltaic consumption method based on an energy storage control system according to an embodiment of the present application;
fig. 3 is a specific flowchart of the photovoltaic consumption method S204 based on the energy storage control system shown in fig. 2;
fig. 4 is a detailed flowchart of the photovoltaic consumption method S2042 based on the energy storage control system shown in fig. 3;
fig. 5 is a detailed flowchart of the photovoltaic consumption method S2043 based on the energy storage control system shown in fig. 3;
fig. 6 is another specific flowchart of a photovoltaic consumption method based on an energy storage control system according to an embodiment of the present application;
fig. 7 is a specific flowchart of the photovoltaic consumption method S201 based on the energy storage control system shown in fig. 2.
Detailed Description
In order to make the objects, technical solutions and advantages of the present application more apparent, the present application is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application.
Referring to fig. 1, a schematic structural diagram of an energy storage control system 10 for implementing photovoltaic consumption provided in the embodiment of the present application is shown, where the energy storage control system 10 is connected to a load 20, and the energy storage control system 10 can utilize photovoltaic power generation to supply power to the load 20 and perform photovoltaic consumption, so as to ensure power utilization balance of the load 20 and improve an application range of the energy storage control system 10; for convenience of explanation, only the parts related to the present embodiment are shown, and detailed as follows:
the energy storage control system 10 includes: at least one battery pack (indicated by 1011, 1012 and … 101N in FIG. 1, wherein N is an integer greater than 0), at least one slave control module (indicated by 1021, 1022 and … 102N in FIG. 1), a photovoltaic power generation module 103, an electricity meter module 104 and a master control module 105.
Each battery pack comprises a plurality of batteries which are connected in series in sequence.
The battery is illustratively a lithium battery, or other types of chemical energy storage batteries, through which electrical energy storage, as well as charging or discharging, can be achieved; in the embodiment, the battery pack is combined with a plurality of batteries for charging and discharging so as to realize the electric energy storage function with larger capacity; therefore, the electric energy capacity is expanded through the plurality of batteries connected in series, the photovoltaic power generation system has better photovoltaic absorption performance, and the application range of the energy storage control system 10 is widened.
The slave control modules are connected with the battery packs in a one-to-one correspondence mode, and are used for acquiring the State of Charge (SOC) of the battery packs connected with the slave control modules, judging whether the battery packs meet Charge and discharge conditions according to the SOC, and generating a first driving signal when the battery packs meet the Charge and discharge conditions.
Each slave control module and each battery pack have a one-to-one corresponding connection relationship, the slave control module can acquire the charge and discharge performance of the corresponding battery pack so as to acquire the actual charge and discharge state of each battery pack, and the slave control module can acquire the actual residual electric quantity of the corresponding battery pack in real time; the actual charging and discharging safety performance of the battery pack can be accurately judged through the control module, so that safe and efficient charging control or discharging control can be conveniently carried out on the battery in the battery pack; therefore, the charging and discharging safety of the corresponding battery pack is acquired in real time from the control module, the electric energy storage safety and the efficiency of each battery pack are guaranteed, and the efficient photovoltaic absorption function is realized.
The photovoltaic power generation module 103 is used for photovoltaic power generation and generating power supply electric energy to supply power to the load 20 and/or charge each battery pack.
On one hand, the photovoltaic power generation module 103 can perform photovoltaic power generation to output power supply electric energy, and can provide stable electric energy for the load 20 through the power supply electric energy to ensure the working safety and reliability of the load 20; on the other hand, the battery packs can be charged by the electric energy output by the photovoltaic power generation module 103, and then the photovoltaic power generation electric energy of the photovoltaic power generation module 103 is stored by each battery pack, so that the photovoltaic consumption function of the photovoltaic power generation module 103 is completed; therefore, in the embodiment, the photovoltaic power generation is performed in real time through the photovoltaic power generation module 103, so as to perform efficient power supply for the load 20 or charge each battery pack, thereby ensuring the photovoltaic power generation balance and controllability of the photovoltaic power generation module 103.
The electric meter module 104 is configured to acquire a total active power value, where the total active power value includes active power of all battery packs meeting the charging and discharging conditions, power consumption of the load 20, and photovoltaic power generation power of the photovoltaic power generation module 103.
Optionally, after the electric meter module 104 obtains the total active power value, the total active power value is displayed; further, the user can intuitively acquire the discharge performance of the plurality of battery packs meeting the charge-discharge condition and the photovoltaic power generation performance of the photovoltaic power generation module 103, so as to accurately control the electric energy input and output state of the load 20; illustratively, the total active power value is equal to the active power of all battery packs meeting the charge-discharge condition, the power consumption of the load and the photovoltaic power generation power of the photovoltaic power generation module, the electric meter module 104 is connected with the load 20, the photovoltaic power generation module 103 and each battery pack through a bus, when the photovoltaic power generation module 30 outputs electric energy through the bus, the load 20 accesses electric energy through the bus, and when each battery pack meeting the charge-discharge condition is charged and discharged through the bus, the electric energy running on the bus is the total active power value of the load 20, the photovoltaic power generation module 103 and all battery packs meeting the charge-discharge condition, so that the electric meter module 104 can accurately acquire the total active power value in the energy storage control system 10 through the bus to acquire the actual transmission state of the internal electric energy of the energy storage control system 10 in real; for example, the photovoltaic power generation power of the photovoltaic power generation module 103 is: -10KW, active power for all batteries in charge and discharge conditions: -20Kw, the power consumption of the load 20 is: 30KW, the total active power who obtains according to the computational formula is 0KW, and then this embodiment can directly gather the actual total active power value of energy storage control system 10 through ammeter module 104 to the realization carries out nimble photovoltaic consumption to the photovoltaic power generation process of photovoltaic power generation module 103.
The master control module 105 is connected to the electric meter module 104 and each slave control module, and is configured to compare the power consumption of the load 20 with the photovoltaic power generation power of the photovoltaic power generation module 103 to obtain a comparison result, and generate a charge and discharge control signal according to the comparison result, the first driving signal, and the total active power value.
The main control module 105 can compare the difference between the power consumption and the photovoltaic power generation power to obtain the electric energy transmission balance between the photovoltaic power generation module 103 and the load 20, so that the high-efficiency photovoltaic absorption function of the photovoltaic power generation module 103 is realized; for example, when it is determined that the power consumption of the load 20 is greater than the photovoltaic power generation power of the photovoltaic power generation module 103, the battery pack needs to be controlled to output power to maintain the power consumption safety and reliability of the load 20; when the photovoltaic power generation power of the photovoltaic power generation module 103 is greater than the power consumption power of the load 20, the battery pack needs to store the part of the power supply power to prevent the electric energy waste in the photovoltaic power generation process of the photovoltaic power generation module 103; therefore, the main control module 105 in this embodiment can accurately analyze the electric energy transmission performance between the photovoltaic power generation module 103 and the load 20, and then start the photovoltaic absorption process for the photovoltaic power generation module 103 according to the comparison result, the first driving signal and the total active power value, thereby ensuring the control flexibility and accuracy of the photovoltaic absorption.
The slave control module is further configured to control the power supply energy to charge the battery pack corresponding to the charge/discharge condition according to the charge/discharge signal, or control the battery pack corresponding to the charge/discharge condition to discharge according to the charge/discharge signal to supply power to the load 20.
As the slave control module is electrically connected with the corresponding load, the slave control module can control the charging or discharging of the battery pack connected with the slave control module in real time so as to complete the photovoltaic consumption function of the photovoltaic power generation module 103; when the master control module 105 outputs the charge and discharge control signal to the slave control modules, each slave control module is driven to realize a flexible charge and discharge control function; wherein, the charge and discharge signal comprises charge and discharge control information; on one hand, the slave control module controls the battery packs corresponding to the charging and discharging conditions to be charged according to the charging and discharging signals, so that part of electric energy in the power supply electric energy can be accessed through the battery packs, after all the battery packs meeting the charging and discharging conditions are charged, the output power of the power supply electric energy can be reduced, and further the load 20 can be accessed to the electric energy with rated power; on the other hand, the slave control module controls the battery packs corresponding to the charging and discharging conditions to discharge, so that the power supply electric energy output by photovoltaic power generation and the discharging electric energy of all the battery packs corresponding to the charging and discharging conditions can be combined to supply power to the load 20, the electric energy power transmitted by a bus can be improved through the discharging electric energy output by the battery packs, and the load 20 can enter stable electric energy in real time and maintain a normal working state; therefore, the present embodiment controls the battery pack to charge or discharge, so that the load 20 can maintain power supply balance, and a high-efficiency photovoltaic absorption function is implemented for the photovoltaic power generation of the photovoltaic power generation module 103, so as to ensure the power balance between the photovoltaic power generation of the photovoltaic power generation module 103 and the power supply of the load 20, and the load 20 has higher power input safety and reliability.
In the structural schematic of the energy storage control system 10 shown in fig. 1, after comprehensive analysis is performed on the electric energy transmission states of the battery pack, the photovoltaic power generation module 103 and the load 20, a total active power value is obtained; by comparing the difference between the actual power demand of the load 20 and the photovoltaic power generation performance of the photovoltaic power generation module 103, the battery packs meeting the charging and discharging conditions are respectively subjected to charging and discharging control based on the total active power value, so that the photovoltaic consumption function of the photovoltaic power generation module 103 for spontaneous self-use is completed, the power supply balance and reliability of the load 20 are guaranteed, the photovoltaic consumption control step for photovoltaic power generation is simplified, and the application range is wider; therefore, in the embodiment, according to the power difference between the photovoltaic power generation module 103 and the load 20, the balance adjustment between the photovoltaic power generation and the power supply of the load 20 is completed by using the electric energy storage performance of the battery pack, and the load 20 can be always connected with rated electric energy so as to maintain the working stability and working safety of the load 20; therefore, the energy storage control system 10 in the embodiment has a relatively simplified module structure, photovoltaic consumption of photovoltaic power generation can be completed without modifying the internal structure of the energy storage control system 10, the utilization rate of photovoltaic power generation electric energy of the energy storage control system 10 is further improved, and the energy storage control system can be universally applied to different industrial technical fields; therefore, the problems that when the energy storage system carries out photovoltaic consumption in the traditional technology, the internal structure of the system needs to be modified, the photovoltaic consumption steps are complex, great inconvenience is brought to energy storage control operation of a user, and the practical value is not high are effectively solved.
Referring to fig. 1, as an alternative embodiment, the energy storage control system 10 includes: and the transformer module 106, the transformer module 106 is connected with the power grid, the ammeter module 104, the photovoltaic power generation module 103, the load 20 and each slave control module, and is used for outputting the power supply energy to the power grid when the slave control module controls the power supply energy to charge the battery pack corresponding to the charging and discharging conditions according to the charging and discharging signals.
The transformer module 106 has an electric energy conversion control function, and when the photovoltaic power generation power of the photovoltaic power generation module 103 is greater than the power consumption power of the load 20, on one hand, the slave control module controls the battery pack corresponding to the charging and discharging conditions to be charged, so that the battery pack can be connected to the part of the power supply electric energy; on the other hand, the transformer module 106 can also feed back part of the power supply electric energy to the power grid, so as to realize a better photovoltaic consumption function for the photovoltaic power generation module 103; therefore, in this embodiment, the residual electric energy output by the photovoltaic power generation module 103 can be fed back to the power grid through the transformer module 106, so that the power generation utilization rate of the photovoltaic power generation module 103 is improved, and the energy storage control system 10 has a higher application range.
Fig. 2 shows a specific implementation flow of the photovoltaic absorption method based on the energy storage control system 10, please refer to fig. 2, where the photovoltaic absorption method specifically includes:
s201: the method comprises the steps of collecting the charge state of a battery pack connected with a slave control module, detecting whether the battery pack meets charge and discharge conditions, and generating a first driving signal when the battery pack is judged to meet the charge and discharge conditions.
S202: and a photovoltaic power generation module is adopted for photovoltaic power generation and generating power supply electric energy so as to supply power to a load and/or charge each battery pack.
S203: and acquiring a total active power value by adopting an ammeter module, wherein the total active power value comprises active power of all battery packs meeting the charging and discharging conditions, power consumption of loads and photovoltaic power generation power of the photovoltaic power generation module.
S204: the method comprises the steps of comparing the power consumption of a load with the photovoltaic power generation power of a photovoltaic power generation module by adopting a main control module to obtain a comparison result, and generating a charging and discharging control signal according to the comparison result, a first driving signal and a total active power value.
S205: the slave control module is used for controlling power supply electric energy to charge the battery pack corresponding to the charging and discharging conditions according to the charging and discharging signals, or controlling the battery pack corresponding to the charging and discharging conditions to discharge according to the charging and discharging signals so as to supply power to the load.
It should be noted that the photovoltaic power dissipation method in fig. 2 corresponds to the energy storage control system in fig. 1, and therefore, reference may be made to the embodiment in fig. 1 for implementation of each operation step of the photovoltaic power dissipation method in fig. 2, which will not be described herein again.
Therefore, in the specific implementation flow of the photovoltaic absorption method shown in fig. 2, after comparing the photovoltaic power generation power of the photovoltaic power generation module with the power consumption power of the load, flexible charge and discharge control can be performed on all battery packs meeting the charge and discharge conditions, and the photovoltaic absorption is performed on the photovoltaic power generation of the photovoltaic power generation module by using the charge and discharge processes of the battery packs, so as to ensure the balance between the power supply process and the photovoltaic power generation process of the load, and the load can be always connected with stable electric energy to maintain a normal working state; for example, when the photovoltaic power generation power of the photovoltaic power generation module is too high, the battery pack is connected to the part of the power supply electric energy so as to repeatedly utilize part of the photovoltaic power generation electric energy; therefore, the utilization rate of the output electric energy of the photovoltaic power generation is guaranteed, the photovoltaic consumption process is simple and convenient, the balanced charging and discharging performance can be completed by utilizing the charging and discharging performance of the battery pack, the photovoltaic consumption cost is low, and the photovoltaic power generation system can be widely applied to different industrial technical fields; therefore, the problems that the photovoltaic consumption process of the traditional technology is complex, great inconvenience is brought to the photovoltaic consumption process of a user, and the photovoltaic consumption process is difficult to be universally applied are effectively solved.
As an alternative implementation, fig. 3 shows a specific implementation flow of the photovoltaic power dissipation method S204 in fig. 2, please refer to fig. 3, where S204 specifically includes:
s2041: comparing the power consumption of the load with the photovoltaic power generation power of the photovoltaic power generation module by adopting a main control module; if the power consumption power of the load is larger than the photovoltaic power generation power of the photovoltaic power generation module, generating a discharge control signal according to the first driving signal and the total active power value; and if the power consumption of the load is less than the photovoltaic power generation power of the photovoltaic power generation module, generating a charging control signal according to the first driving signal and the total active power value.
Optionally, when the power consumption of the load is equal to the photovoltaic power generation power, the main control module cannot generate a discharge control signal and a charge control signal, the load and the photovoltaic power generation module can keep the balance of electric energy transmission, and the photovoltaic power generation electric energy of the photovoltaic power generation module can just meet the power supply power requirement of the load.
When the power consumption of the load is greater than the photovoltaic power generation power of the photovoltaic power generation module, the photovoltaic power generation performance of the photovoltaic power generation module cannot meet the power consumption requirement of the load, the main control module generates a discharge control signal, and the battery pack is indirectly driven to discharge through the discharge control signal so as to output power for the power supply of the load; on the contrary, if the power consumption of the load is less than the photovoltaic power generation power of the photovoltaic power generation module, the photovoltaic power generation electric energy of the photovoltaic power generation module is more than the power consumption of the load, the main control module is adopted to generate a charging control signal, and the battery pack which meets the charging and discharging conditions is indirectly driven to be charged through the charging control signal so as to store part of the power supply electric energy, so that the load can be connected with rated electric energy and a normal and stable working state is kept; therefore, the battery pack is charged or discharged by the discharging control signal or the charging control signal generated by the main control module, the sensitivity and the precision of photovoltaic consumption of the photovoltaic power generation module are improved, and the control efficiency of the photovoltaic consumption is higher.
S2042: and the slave control module is used for controlling the power supply electric energy according to the charging control signal to charge the battery pack corresponding to the charging and discharging conditions.
The slave control module can perform charging control according to the charging control signal so as to charge the battery pack meeting the charging and discharging conditions, and the battery pack meeting the charging and discharging conditions can be connected to the part of the power supply electric energy so as to avoid the photovoltaic power generation electric energy of the photovoltaic power generation module from being wasted; therefore, the flexible photovoltaic absorption function of photovoltaic power generation is completed through the electric energy storage performance of the battery pack.
S2043: and the slave control module is used for controlling the battery pack corresponding to the charging and discharging conditions to discharge according to the discharging control signal so as to supply power to the load.
The slave control module is used for controlling discharging according to the discharging control signal, and the discharging electric energy of the battery pack which meets the charging and discharging conditions can make up the deficiency of the photovoltaic power generation power; then, rated power supply can be carried out on the load by combining the photovoltaic power generation electric energy and the discharge electric energy of the battery pack which meets the charge-discharge conditions, so that the electric energy input safety and the working stability of the load are guaranteed; therefore, the discharging process of the battery pack is changed through the discharging control signal, photovoltaic consumption is carried out on the photovoltaic power generation process through the discharging function of the battery pack according with the charging and discharging conditions, so that under the condition that the photovoltaic power generation electric energy of the photovoltaic power generation module is insufficient, balanced power supply can still be carried out on the load, and the electric energy input sensitivity and accuracy of the load are improved.
As an alternative implementation manner, fig. 4 shows a specific implementation flow of the photovoltaic reduction method S2042 in fig. 3 provided in this embodiment, please refer to fig. 4, where S2042 specifically includes:
s401: and calculating the first charging power of each battery pack meeting the charging and discharging conditions by adopting the main control module.
The calculation formula of the first charging power is as follows:
Pin＝P/N (1)
in the above formula (1), P is the total active power value, N is the number of all battery packs meeting the charging and discharging conditions, and PinIs the first charging power.
The slave control module identifies whether the corresponding battery pack meets the charging and discharging conditions, and when the corresponding battery pack meets the charging and discharging conditions, the slave control module generates and outputs a first driving signal, so that the master control module is connected with at least one path of first driving signal, and the number of all battery packs meeting the charging and discharging conditions is calculated; based on the formula (1), the first charging power of the battery pack meeting the charging and discharging conditions can be obtained after the total active power value on the bus is uniformly calculated; the first charging power represents the actual charging efficiency of the battery pack meeting the charging and discharging conditions, so that the actual charging performance of each battery pack can be uniformly obtained by obtaining the total active power value of the photovoltaic electric energy of the photovoltaic power generation module, the charging power of the battery pack and the power consumption of the load in advance, and when the photovoltaic power generation power is greater than the power consumption of the load, the charging performance of the battery pack meeting the charging and discharging conditions is utilized, and the photovoltaic absorption function of the photovoltaic power generation electric energy can be completed.
S402: and the slave control module is used for controlling the power supply electric energy according to the charging control signal to charge the battery pack corresponding to the charging and discharging conditions according to the first charging power.
The battery packs meeting the charge-discharge conditions are charged according to the first charging power, so that the charging safety and stability of each battery pack meeting the charge-discharge conditions are guaranteed, and the photovoltaic absorption in the photovoltaic power generation process is completed through the part of the battery packs accessed into the power supply electric energy; at the moment, the battery pack can be connected with electric energy with a certain amplitude, so that the load can be supplied with power through the power supply electric energy, and the battery meeting the charging and discharging conditions can be charged, and the electric energy utilization rate of photovoltaic power generation is improved.
As an alternative implementation manner, fig. 5 shows a specific implementation flow of the photovoltaic reduction method S2043 in fig. 3 provided in this embodiment, please refer to fig. 5, where S2043 specifically includes:
s501: and calculating the first discharge power of each battery pack meeting the charge-discharge condition by adopting the main control module.
The calculation formula of the first discharge power is as follows:
POUT＝P/N (2)
in the above formula (2), P is the total active power value, N is the number of all battery packs meeting the charging and discharging conditions, and POUTIs the first discharge power.
When the slave control module detects that the corresponding battery pack meets the charging and discharging conditions, a first driving signal is generated, the master control module is connected to at least one path of first driving signal, and calculates the number of all battery packs meeting the charging and discharging conditions according to the first driving signal, and based on the active power value on the bus, the actual discharging power of each battery pack meeting the charging and discharging conditions can be quickly calculated according to the step (2), wherein the first discharging power represents the output value of the battery pack meeting the charging and discharging conditions; therefore, the embodiment realizes balanced discharge control of each battery pack meeting the charge and discharge conditions according to the total active power value on the bus, and realizes a stable photovoltaic absorption function of the photovoltaic power generation module.
S502: and the slave control module is used for controlling the corresponding battery pack meeting the charging and discharging conditions to discharge according to the first discharging power according to the discharging control signal so as to supply power to the load.
When the master control module outputs the discharge control signal to each slave control module, the slave control modules start discharge operation according to first discharge power under the driving of the discharge control signal, and then the battery pack according with the charge-discharge condition can output a discharge function with a specific amplitude; therefore, the discharge electric energy of the battery pack and the photovoltaic power generation electric energy of the photovoltaic power generation module are combined to efficiently supply power to the load so as to complete the photovoltaic consumption function in the photovoltaic power generation process; therefore, the embodiment combines the discharge performance of the battery pack and the photovoltaic power generation performance of the photovoltaic power generation module, and realizes high-efficiency and balanced power supply performance for the load.
As an optional implementation manner, fig. 6 shows another implementation flow of the photovoltaic absorption method provided by this embodiment, where S601 to S604 in fig. 6 are the same as S201 to S204 in fig. 2, and the following will focus on discussion of S605 and S606, specifically as follows:
s605: and generating a detection driving instruction by adopting the master control module, and sending the detection driving instruction to the slave control module.
After the main control module compares the power consumption of the load with the photovoltaic power generation power of the photovoltaic power generation module and before the charge and discharge control of the battery pack meeting the charge and discharge conditions is started through the charge and discharge control signal, a detection driving instruction is generated, the state detection function of each slave control module can be controlled through the detection driving instruction, the charge and discharge control safety and the charge and discharge control efficiency of each slave control module are ensured, and the stability of the photovoltaic absorption control can be ensured in real time by utilizing the charge and discharge performance of each battery pack.
S606: detecting whether the corresponding battery pack meeting the charging and discharging conditions is in a normal state or not by adopting a slave control module according to the detection driving instruction; if the battery pack corresponding to the charging and discharging conditions is judged to be in the normal state, the slave control module is adopted to control the power supply electric energy to charge the battery pack corresponding to the charging and discharging conditions according to the charging and discharging signals, or the battery pack corresponding to the charging and discharging conditions is controlled to discharge according to the charging and discharging signals to supply power to the load.
For example, when a battery in the battery pack has a physical fault, such as electric energy leakage, sealing material rupture, etc., the slave control module determines that the corresponding battery pack is in an abnormal state; only when the battery pack has no physical fault, the battery pack is in a normal state; the slave control module is adopted to control the battery pack connected with the slave control module to carry out normal charge and discharge control so as to ensure the charge and discharge safety of the battery pack; therefore, before the battery pack is subjected to charge and discharge control, whether each battery pack meeting charge and discharge conditions is in a normal state or not is detected in advance, only when the battery pack is in a normal state, the charge and discharge control function of the battery pack is started, the internal physical safety of the battery pack is guaranteed, then the battery pack meeting the charge and discharge conditions is used for charging or discharging, the stability and the reliability of photovoltaic consumption of the photovoltaic power generation module can be guaranteed in real time, and the practical value of the photovoltaic consumption method is improved.
As an optional implementation manner, fig. 7 shows a specific implementation flow of the photovoltaic power dissipation method S201 in fig. 2 provided in this embodiment, in S201, collecting a state of charge of a battery pack connected to the control module, and detecting whether the battery pack satisfies a charge/discharge condition includes:
s2011: the slave control module is used for acquiring the charge state of the battery pack connected with the slave control module in real time to obtain the residual electric quantity of the battery pack.
Each slave control module can acquire the SOC of the corresponding battery pack, and can acquire the actual charging and discharging state of the corresponding battery pack in real time according to the SOC of the battery pack, so that more accurate and flexible charging and discharging control is performed on the corresponding battery pack; carry out the photovoltaic according to the residual capacity of group battery to photovoltaic power generation process and consume, utilize the electric energy storage function of group battery, promoted control accuracy and control flexibility to photovoltaic consumption process.
S2012: and detecting whether the battery pack connected with the slave control module meets a safe charging condition or not according to the difference value between the residual electric quantity of the battery pack and the preset charging electric quantity by using the slave control module.
For example, when the remaining capacity of the battery pack is less than the preset charging capacity, it is determined that the corresponding battery pack satisfies the safe charging condition, and at this time, a quick charging function can be implemented for the battery pack satisfying the safe charging condition; when the residual electric quantity of the battery pack is greater than or equal to the preset charging electric quantity, judging that the corresponding battery pack does not meet the safe charging condition; therefore, according to the difference value between the residual capacity of the battery pack and the preset charging capacity, the safe charging condition of the battery pack can be quantitatively judged, and the judgment process of the charging safety of the battery pack is simplified.
When the battery pack is judged to meet the safe charging condition, the slave control module performs real-time charging control on the corresponding battery pack meeting the safe charging condition by using power supply electric energy according to the charging and discharging signals, and partial electric energy in the power supply electric energy can be effectively reduced by using the charging function of the battery pack, so that the photovoltaic absorption function in photovoltaic power generation is realized; therefore, in the process of controlling the charging of the battery pack, the safety of the charging of the battery pack needs to be detected in advance, so that the overcharged state of the battery pack is avoided; the embodiment can guarantee the safety and reliability of electric energy transmission between the battery pack and the load in real time.
S2013: and detecting whether the battery pack connected with the slave control module meets a safe discharge condition or not according to the difference value between the residual electric quantity of the battery pack and the preset discharge electric quantity by using the slave control module.
For example, when the remaining capacity of the battery pack is greater than the preset discharging capacity, the slave control module determines that the corresponding battery pack meets the safe discharging condition; when the residual electric quantity of the battery is less than or equal to the preset discharging electric quantity, the slave control module judges that the corresponding battery pack does not meet the safe discharging condition; therefore, according to the difference between the residual electric quantity of the battery pack and the preset discharging electric quantity, whether the battery pack meets the safe discharging condition can be quantitatively and accurately judged, so that the discharging control stability and flexibility of the battery pack in the photovoltaic consumption process are guaranteed.
When the slave control module is adopted to judge that the battery pack meets the safe discharge condition, the slave control module is adopted to control the battery pack corresponding to the safe discharge condition to discharge according to the charge-discharge signal so as to supply power to the load; at the moment, the battery pack which meets the safe discharge condition discharges to ensure the power utilization safety and reliability of the load; therefore, the embodiment utilizes the discharging electric energy of the battery pack to supply power to the load so as to complete the high-efficiency photovoltaic consumption function of the photovoltaic power generation module, ensure the electric energy storage safety and reliability of the battery pack and realize the real-time control of the photovoltaic consumption process.
Therefore, in the embodiment, the charging and discharging conditions include the safe charging condition and the safe discharging condition, the actual charging and discharging performance of the battery pack can be accurately obtained according to the residual electric quantity of the battery pack, the battery pack meeting the charging and discharging conditions can be accurately distinguished, the photovoltaic absorption function is completed by using the charging performance and the discharging performance of the battery pack, and the control stability of the photovoltaic absorption is improved.
As an optional implementation manner, when the slave control module controls the power supply electric energy to charge the battery pack corresponding to the charging and discharging conditions according to the charging and discharging signal, the photovoltaic consumption method includes:
and outputting the power supply electric energy to the power grid.
When each battery pack which meets the charging and discharging conditions is used for charging and photovoltaic consumption of the photovoltaic power generation module, the power supply electric energy can be output to a power grid, and then the power grid can be connected with the electric energy output by the photovoltaic power generation module, so that the photovoltaic consumption function with higher precision of the photovoltaic power generation module is realized; the part of the power supply electric energy is output to the power grid, so that other electric equipment can extract the electric energy from the power grid conveniently, the utilization efficiency of the power supply electric energy output by the photovoltaic power generation module is improved, and the control stability and flexibility of the photovoltaic absorption method are improved.
As an optional implementation manner, the slave control module is used for controlling the battery pack meeting the charging and discharging conditions to discharge according to the charging and discharging signal so as to supply power to the load, and the method further includes:
and feeding the discharge electric energy output by the battery pack meeting the charge-discharge conditions back to the power grid and the load according to a preset proportion.
The preset proportion is preset, and when the load is powered by the power supply electric energy output by the photovoltaic power generation module, the output power of the power supply electric energy is small, the output of the battery pack meeting the charging and discharging conditions is required, so that the power supply stability and reliability of the load are guaranteed; at the moment, the discharging electric energy of the battery pack is subjected to self-adaptive adjustment, and the charging and discharging time period of the energy storage control system is reasonably planned by taking a preset proportion as a final beneficial proportion; the discharging electric energy output by the battery meeting the charging and discharging conditions is divided into two parts according to a preset proportion and respectively output to the load and the power grid, so that the load and the power grid can both benefit; on the basis of guaranteeing the safety of the power grid and each battery pack, the electric energy of the battery pack can be fed back to the power grid, the photovoltaic consumption function of the photovoltaic power generation module is completed, and the photovoltaic consumption control efficiency and control flexibility of the photovoltaic power generation module are improved.
It should be understood that, the sequence numbers of the steps in the foregoing embodiments do not imply an execution sequence, and the execution sequence of each process should be determined by its function and inherent logic, and should not constitute any limitation to the implementation process of the embodiments of the present application.
Various embodiments are described herein for various devices, circuits, apparatuses, systems, and/or methods. Numerous specific details are set forth in order to provide a thorough understanding of the overall structure, function, manufacture, and use of the embodiments as described in the specification and illustrated in the accompanying drawings. However, it will be understood by those skilled in the art that the embodiments may be practiced without such specific details. In other instances, well-known operations, components and elements have been described in detail so as not to obscure the embodiments in the description. It will be appreciated by those of ordinary skill in the art that the embodiments herein and shown are non-limiting examples, and thus, it can be appreciated that the specific structural and functional details disclosed herein may be representative and do not necessarily limit the scope of the embodiments.
Reference throughout the specification to "various embodiments," "in an embodiment," "one embodiment," or "an embodiment," etc., means that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment. Thus, appearances of the phrases "in various embodiments," "in some embodiments," "in one embodiment," or "in an embodiment," or the like, in places throughout this specification are not necessarily all referring to the same embodiment. Furthermore, the particular features, structures, or characteristics may be combined in any suitable manner in one or more embodiments. Thus, a particular feature, structure, or characteristic illustrated or described in connection with one embodiment may be combined, in whole or in part, with features, structures, or characteristics of one or more other embodiments without presuming that such combination is not an illogical or functional limitation. Any directional references (e.g., plus, minus, upper, lower, upward, downward, left, right, leftward, rightward, top, bottom, above …, below …, vertical, horizontal, clockwise, and counterclockwise) are used for identification purposes to aid the reader's understanding of the present disclosure, and do not create limitations, particularly as to the position, orientation, or use of the embodiments.
Although certain embodiments have been described above with a certain degree of particularity, those skilled in the art could make numerous alterations to the disclosed embodiments without departing from the scope of this disclosure. Joinder references (e.g., attached, coupled, connected, and the like) are to be construed broadly and may include intermediate members between a connection of elements and relative movement between elements. Thus, connection references do not necessarily imply that two elements are directly connected/coupled and in a fixed relationship to each other. The use of "for example" throughout this specification should be interpreted broadly and used to provide non-limiting examples of embodiments of the disclosure, and the disclosure is not limited to such examples. It is intended that all matter contained in the above description or shown in the accompanying drawings shall be interpreted as illustrative only and not limiting. Changes in detail or structure may be made without departing from the disclosure.
The present invention is not intended to be limited to the particular embodiments shown and described, but is to be accorded the widest scope consistent with the principles and novel features herein disclosed.

Claims (10)

1. An energy storage control system for achieving photovoltaic digestion, connected to a load, the energy storage control system comprising:
at least one battery pack, wherein each battery pack comprises a plurality of batteries connected in series in sequence;
the slave control modules are connected with the battery packs in a one-to-one correspondence mode, and are used for acquiring the charge states of the battery packs connected with the slave control modules, judging whether the battery packs meet charge and discharge conditions according to the charge states, and generating a first driving signal when the battery packs meet the charge and discharge conditions;
the photovoltaic power generation module is used for carrying out photovoltaic power generation and generating power supply electric energy so as to supply power to the load and/or charge each battery pack;
the electric meter module is used for acquiring a total active power value, wherein the total active power value comprises active power of all battery packs meeting charging and discharging conditions, power consumption power of the load and photovoltaic power generation power of the photovoltaic power generation module;
the master control module is connected with the ammeter module and each slave control module, and is used for comparing the power consumption of the load with the photovoltaic power generation power of the photovoltaic power generation module to obtain a comparison result and generating a charging and discharging control signal according to the comparison result, the first driving signal and the total active power value;
the slave control module is also used for controlling the power supply electric energy to charge the battery pack corresponding to the charging and discharging conditions according to the charging and discharging signals, or controlling the battery pack corresponding to the charging and discharging conditions to discharge according to the charging and discharging signals so as to supply power to the load.
2. The energy storage control system of claim 1, further comprising:
and the transformer module is connected with the power grid, the ammeter module, the photovoltaic power generation module, the load and each slave control module and used for outputting the power supply electric energy to the power grid when the slave control module controls the power supply electric energy to charge the battery pack corresponding to the charging and discharging conditions according to the charging and discharging signals.
3. A photovoltaic consumption method based on the energy storage control system according to any one of claims 1-2, comprising:
the slave control module is used for collecting the charge state of the battery pack connected with the slave control module, detecting whether the battery pack meets the charge and discharge conditions, and generating a first driving signal when the battery pack is judged to meet the charge and discharge conditions;
the method comprises the following steps of performing photovoltaic power generation by using a photovoltaic power generation module to generate power supply electric energy so as to supply power to a load and/or charge each battery pack;
acquiring a total active power value by adopting the ammeter module, wherein the total active power value comprises active power of all battery packs meeting charging and discharging conditions, power consumption power of the load and photovoltaic power generation power of the photovoltaic power generation module;
comparing the power consumption of the load with the photovoltaic power generation power of the photovoltaic power generation module by adopting the main control module to obtain a comparison result, and generating a charge-discharge control signal according to the comparison result, the first driving signal and the total active power value;
and the slave control module is adopted to control the power supply electric energy to charge the battery pack corresponding to the charging and discharging conditions according to the charging and discharging signals, or control the battery pack corresponding to the charging and discharging conditions to discharge so as to supply power to the load according to the charging and discharging signals.
4. The photovoltaic absorption method according to claim 3, wherein the main control module is adopted to compare the power consumption of the load with the photovoltaic power generation power of the photovoltaic power generation module to obtain a comparison result, and generate a charge and discharge control signal according to the comparison result, the first driving signal and the total active power value, specifically:
comparing the power consumption of the load with the photovoltaic power generation power of the photovoltaic power generation module by adopting the main control module; if the power consumption power of the load is greater than the photovoltaic power generation power of the photovoltaic power generation module, generating a discharge control signal according to the first driving signal and the total active power value; if the power consumption of the load is less than the photovoltaic power generation power of the photovoltaic power generation module, generating a charging control signal according to the first driving signal and the total active power value;
the slave control module is adopted to control the power supply electric energy to charge the battery pack which corresponds to the charging and discharging conditions according to the charging control signal;
and controlling the corresponding battery pack meeting the charging and discharging conditions to discharge according to the discharging control signal by adopting the slave control module so as to supply power to the load.
5. The photovoltaic consumption method according to claim 4, wherein the controlling the supply electric energy by the slave control module according to the charge-discharge signal to charge the battery pack corresponding to the charge-discharge condition includes:
calculating the first charging power of each battery pack meeting the charging and discharging conditions by adopting the main control module;
wherein the calculation formula of the first charging power is as follows:
Pin＝P/N
in the above formula, P is the total active power value, N is the number of all battery packs meeting the charge-discharge condition, and P isinThe first charging power is used;
and controlling the power supply electric energy to charge the battery pack corresponding to the charging and discharging conditions according to the first charging power by adopting the slave control module according to the charging control signal.
6. The photovoltaic consumption method according to claim 4, wherein the controlling, by the slave control module, the battery pack corresponding to the charging and discharging conditions to discharge according to the discharging control signal to supply power to the load includes:
calculating the first discharge power of each battery pack meeting the charge-discharge condition by adopting the main control module;
wherein the calculation formula of the first discharge power is as follows:
POUT＝P/N
in the above formula, P is the total active power value, N is the number of all battery packs meeting the charge-discharge condition, and P isOUTThe first discharge power;
and controlling the corresponding battery pack meeting the charging and discharging conditions to discharge according to the first discharging power by adopting the slave control module according to the discharging control signal so as to supply power to the load.
7. The photovoltaic absorption method according to claim 3, wherein before the slave control module is used to control the power supply electric energy to charge the battery pack corresponding to the charging and discharging condition according to the charging and discharging signal, or before the slave control module is used to control the battery pack corresponding to the charging and discharging condition to discharge according to the charging and discharging signal to supply power to the load, the photovoltaic absorption method further comprises:
generating a detection driving instruction by adopting the master control module, and sending the detection driving instruction to the slave control module;
detecting whether the corresponding battery pack meeting the charging and discharging conditions is in a normal state or not by adopting the slave control module according to the detection driving instruction; and if the battery pack corresponding to the charging and discharging conditions is judged to be in a normal state, the slave control module is adopted to control the power supply electric energy to charge the battery pack corresponding to the charging and discharging conditions according to the charging and discharging signals, or control the battery pack corresponding to the charging and discharging conditions to discharge so as to supply power to the load according to the charging and discharging signals.
8. The photovoltaic absorption method according to claim 3, wherein the collecting the state of charge of the battery pack connected to the slave control module and detecting whether the battery pack satisfies the charging and discharging conditions includes:
the slave control module is adopted to collect the charge state of the battery pack connected with the slave control module in real time so as to obtain the residual electric quantity of the battery pack;
detecting whether the battery pack connected with the slave control module meets a safe charging condition or not according to the difference value between the residual electric quantity of the battery pack and the preset charging electric quantity by adopting the slave control module;
and detecting whether the battery pack connected with the slave control module meets a safe discharge condition or not according to the difference value between the residual electric quantity of the battery pack and the preset discharge electric quantity by adopting the slave control module.
9. The photovoltaic absorption method according to claim 3, wherein when the slave control module is used for controlling the power supply electric energy to charge the battery pack corresponding to the charging and discharging conditions according to the charging and discharging signals, the photovoltaic absorption method comprises the following steps:
and outputting the power supply electric energy to a power grid.
10. The photovoltaic consumption method of claim 3, wherein the slave control module is used to control the battery pack corresponding to the charging and discharging conditions to discharge according to the charging and discharging signals so as to supply power to the load, further comprising:
and feeding the discharging electric energy output by the battery pack meeting the charging and discharging conditions back to the power grid and the load according to a preset proportion.
CN201911310530.5A 2019-12-18 2019-12-18 Energy storage control system for realizing photovoltaic consumption and photovoltaic consumption method Pending CN110994681A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201911310530.5A CN110994681A (en) 2019-12-18 2019-12-18 Energy storage control system for realizing photovoltaic consumption and photovoltaic consumption method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201911310530.5A CN110994681A (en) 2019-12-18 2019-12-18 Energy storage control system for realizing photovoltaic consumption and photovoltaic consumption method

Publications (1)

Publication Number Publication Date
CN110994681A true CN110994681A (en) 2020-04-10

Family

ID=70095398

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201911310530.5A Pending CN110994681A (en) 2019-12-18 2019-12-18 Energy storage control system for realizing photovoltaic consumption and photovoltaic consumption method

Country Status (1)

Country Link
CN (1) CN110994681A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112186847A (en) * 2020-09-25 2021-01-05 包头昊明稀土新电源科技有限公司 Energy storage power supply auxiliary power supply system and operation method thereof
CN113437753A (en) * 2021-08-25 2021-09-24 广州乐盈信息科技股份有限公司 Energy storage system
CN113708411A (en) * 2021-09-26 2021-11-26 阳光电源股份有限公司 Comprehensive energy system and countercurrent control method thereof
CN114312426A (en) * 2021-12-30 2022-04-12 广东电网有限责任公司 Method and device for optimizing configuration of net zero energy consumption optical storage charging station and storage medium

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112186847A (en) * 2020-09-25 2021-01-05 包头昊明稀土新电源科技有限公司 Energy storage power supply auxiliary power supply system and operation method thereof
CN113437753A (en) * 2021-08-25 2021-09-24 广州乐盈信息科技股份有限公司 Energy storage system
CN113708411A (en) * 2021-09-26 2021-11-26 阳光电源股份有限公司 Comprehensive energy system and countercurrent control method thereof
CN114312426A (en) * 2021-12-30 2022-04-12 广东电网有限责任公司 Method and device for optimizing configuration of net zero energy consumption optical storage charging station and storage medium

Similar Documents

Publication Publication Date Title
US20210359527A1 (en) Systems and methods for series battery charging
CN110994681A (en) Energy storage control system for realizing photovoltaic consumption and photovoltaic consumption method
US8810202B2 (en) Battery system and its control method
CN103904735B (en) A kind of energy storage subsystem for batch (-type) renewable energy system and control method thereof
CN113794216B (en) Parameter configuration method and terminal of optical storage and charging system
CN103166325B (en) Energy storage system and the method controlling this energy storage system
WO2017142218A1 (en) Energy storage system and system operating method
KR20190000992A (en) Energy storage system battery enable module management and control of battery
CN103683339A (en) Vanadium battery management system
CN109768561A (en) A kind of Control of Electric Vehicles method and system
CN101493243B (en) Multiple energy resource air conditioning equipment and multiple energy resource power control unit
CN202798068U (en) Vanadium battery management system
CN111817423A (en) Photovoltaic power generation system
KR20150033971A (en) Photovoltaics System, apparatus and method for operating of storage battery
CN106712082A (en) Distributed power generation system based on multi-agent system
CN112510768A (en) Power supply system
WO2022237155A1 (en) Battery pack detection control method, energy storage conversion system and computer-readable storage medium
CN104767248A (en) Intelligent energy source efficient management system
JP2010200579A (en) Storage management system
CN209313514U (en) Light hydrogen energy-storage power supplying apparatus
CN203261051U (en) Solar charging device for water regime telemetering remote terminal device powered by lithium iron phosphate batteries
CN212366912U (en) Photovoltaic power generation system
CN216751226U (en) Battery pack monitoring and balancing management system
CN218386826U (en) Remote distributed energy storage control device
CN112491083B (en) Micro-grid structure based on fuel cell and operation control method

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
RJ01 Rejection of invention patent application after publication
RJ01 Rejection of invention patent application after publication

Application publication date: 20200410