CN115483763B - Lead-acid battery energy storage power station monitoring management system and method - Google Patents

Lead-acid battery energy storage power station monitoring management system and method Download PDF

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CN115483763B
CN115483763B CN202211330655.6A CN202211330655A CN115483763B CN 115483763 B CN115483763 B CN 115483763B CN 202211330655 A CN202211330655 A CN 202211330655A CN 115483763 B CN115483763 B CN 115483763B
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battery
energy storage
charging
repair
power station
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CN115483763A (en
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崔进
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Beijing Jinfa New Energy Technology Co ltd
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Beijing Jinfa New Energy Technology Co ltd
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    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02JCIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J13/00Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
    • H02J13/00002Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by monitoring
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02JCIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J13/00Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
    • H02J13/00001Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by the display of information or by user interaction, e.g. supervisory control and data acquisition systems [SCADA] or graphical user interfaces [GUI]
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02JCIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J13/00Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
    • H02J13/00006Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by information or instructions transport means between the monitoring, controlling or managing units and monitored, controlled or operated power network element or electrical equipment
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02JCIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J13/00Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
    • H02J13/00006Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by information or instructions transport means between the monitoring, controlling or managing units and monitored, controlled or operated power network element or electrical equipment
    • H02J13/00016Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by information or instructions transport means between the monitoring, controlling or managing units and monitored, controlled or operated power network element or electrical equipment using a wired telecommunication network or a data transmission bus
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02JCIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J13/00Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
    • H02J13/00006Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by information or instructions transport means between the monitoring, controlling or managing units and monitored, controlled or operated power network element or electrical equipment
    • H02J13/00022Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by information or instructions transport means between the monitoring, controlling or managing units and monitored, controlled or operated power network element or electrical equipment using wireless data transmission
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02JCIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J13/00Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
    • H02J13/00032Systems characterised by the controlled or operated power network elements or equipment, the power network elements or equipment not otherwise provided for

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Human Computer Interaction (AREA)
  • Charge And Discharge Circuits For Batteries Or The Like (AREA)

Abstract

The application relates to a lead-acid battery energy storage power station monitoring management system and a method, which belong to the technical field of energy storage battery management, wherein the system comprises a data acquisition terminal, a charging and discharging repair device, a monitoring management center, an internet cloud server and a user operation terminal; the monitoring management center is respectively connected with the data acquisition terminal and the charging and discharging repair equipment; the internet cloud server is connected with the monitoring management center through a network interface; and the user operation terminal is connected with the Internet cloud server through a network. According to the scheme, on the premise that operation is not influenced, complete balance control service is provided to keep the consistency of the energy storage battery array, fault batteries are repaired on line, the operation and maintenance cost of the energy storage power station is saved, experience dependence on operation and maintenance personnel is avoided, the whole energy storage power station is subjected to centralized monitoring data acquisition and storage, historical data tracing can be achieved, and intelligent maintenance of the system is achieved.

Description

Lead-acid battery energy storage power station monitoring management system and method
Technical Field
The invention belongs to the technical field of lead-acid battery energy storage, and particularly relates to a lead-acid battery energy storage power station monitoring and management system and method.
Background
In the energy storage battery management system for monitoring parameters of a lead-acid battery energy storage power station in the current industry, single batteries of a battery array are subjected to voltage and temperature acquisition and are centrally uploaded to a monitoring analysis platform; the real-time visual data display is provided for users, so that maintenance personnel can directly know the real-time working condition of the energy storage power station through an application end, and can judge the working state of each single and group string battery in the energy storage power station according to related industry experience, and the dependence on the industry experience is strong; and the real-time state data is refreshed in real time, so that the accurate retroactive judgment can not be carried out by referring to the historical data of the battery power station, and the service life of the whole energy storage power station can not be accurately predicted.
In addition, along with the extension of the operation time of the charging station, the operation stopping maintenance can be carried out only by means of grouping and replacing the batteries again when the problems of poor battery consistency, battery vulcanization and the like occur, and the failed energy storage battery cannot be repaired.
Disclosure of Invention
In order to solve the defects of the prior art, the invention provides a lead-acid battery energy storage power station monitoring and management system and a method, and aims to solve the problems that the dependence of energy storage battery maintenance on industry experience is strong, the online repair of a fault battery cannot be realized, the consistency of a battery array is poor, and the historical data tracing and service life prediction of an energy storage power station cannot be performed.
In order to achieve the purpose, the following technical scheme is adopted in the application:
in a first aspect, the invention provides a lead-acid battery energy storage power station monitoring and management system, which comprises a data acquisition terminal, a charging and discharging repair device, a monitoring management center, an internet cloud server and a user operation terminal; the monitoring management center is respectively connected with the data acquisition terminal and the charging and discharging repair equipment; the internet cloud server is connected with the monitoring management center through a network interface; the user operation terminal is connected with the Internet cloud server through a network; the data acquisition terminal is used for acquiring the operating parameters of each lead-acid battery in the energy storage power station and uploading the acquired operating parameter sets to the monitoring management center; the charging and discharging repair equipment is used for repairing the energy storage battery with faults according to the control instruction issued by the monitoring management center and performing balance control on the battery array; the monitoring management center is used for receiving and storing the operation parameters, analyzing the operation parameters according to preset battery repair logic and battery balance control logic, and sending corresponding control instructions to the charging and discharging repair equipment according to the analysis results; the internet cloud server is used for reading the operation parameters from the monitoring management center, predicting the service life of the power station by using an algorithm and pushing a service life prediction result and the read operation parameters to the user operation terminal.
Furthermore, the monitoring management center comprises a central processor, a storage unit, a touch screen, a bus transmission interface, a network support interface and a power supply circuit; the central processor is respectively connected with the storage unit and the touch screen; the data acquisition terminal is connected with the central processor through a bus transmission interface; the Internet cloud server establishes communication connection with the central processor through a network support interface; the central processor is connected with an external power supply through a power supply circuit.
Furthermore, the data acquisition terminal comprises a cell state detection module and a charge-discharge monitoring module, wherein the cell state detection module is used for detecting the cell voltage and the temperature of the energy storage battery; the charging and discharging monitoring module is used for monitoring the charging current and the discharging voltage of the energy storage battery; and the monitoring management center is respectively connected with the battery cell state detection module and the charging and discharging monitoring module.
Further, the charging and discharging repair equipment comprises a battery repair device, a charger, a discharger, a routing relay and a selection controller, wherein the selection controller is respectively connected with the charger, the discharger and the routing relay; and the monitoring management center is respectively connected with the selection controller and the battery repair device.
Further, the charger comprises a first charger and a second charger, and the selection controller is respectively connected with the first charger and the second charger; the discharger comprises a first discharger and a second discharger, and the selection controller is respectively connected with the first discharger and the second discharger.
In a second aspect, the present application provides a monitoring and management method for a lead-acid battery energy storage power station, which is implemented by using the above-mentioned monitoring and management system for a lead-acid battery energy storage power station, and the method includes:
s1: acquiring data, namely acquiring the operating parameters of each lead-acid battery in the energy storage power station by using a data acquisition terminal, and uploading the acquired operating parameters to a monitoring management center;
s2: the data storage, the monitoring management center carries out structuralization processing on the uploaded operation parameters and stores the structuralization operation parameters in a local storage unit;
s3: the data logic processing step, namely, reading historical operating parameters of the energy storage battery by a monitoring management center, judging the state of the energy storage battery according to preset battery repair logic and battery balance control logic, and sending a battery repair instruction to a battery repair device for battery repair if the energy storage battery is judged to be required to be repaired; if the energy storage battery needs to be subjected to equalization control, calling an equalization control flow to perform battery array equalization control;
s4: and analyzing background data, reading the structured operation parameters from a local database by the supervision and management center, predicting the service life of the power station by using an algorithm, and pushing the service life prediction result and the read structured operation parameters to the user operation terminal.
Further, the step of sending a battery repair instruction to a battery repair device to perform a battery repair process if it is determined that the energy storage battery needs to perform battery repair specifically includes: firstly, establishing a battery repair control task, and periodically starting task execution according to a preset automatic battery repair cycle; judging whether the current time is in an automatic battery repairing period, if not, detecting a manual battery repairing instruction and prompting a user to select whether to perform manual repairing; if the user selects manual repair or the current time is in an automatic repair cycle, historical operating parameters of all single energy storage batteries in the current battery array are inquired from the storage unit, and the inquired historical operating parameters are downloaded to a local cache; acquiring actual operation parameters of the current battery array through a data acquisition terminal, and screening data of the locally cached historical operation parameters according to a battery repair check rule if the actual operation parameters meet preset battery repair conditions; if the batteries to be repaired are screened out, the corresponding electronic identification codes are stored in the central processor, the central processor combines the received electronic identification codes to form a battery repairing instruction and sends the battery repairing instruction to the battery repairing device, and the batteries to be repaired are repaired one by one; and if the battery to be repaired is not screened out, generating a current repair record, and configuring the repair information of the current battery array to be stored in the storage unit.
Further, the step of calling an equalization control flow to perform the equalization control process of the battery array when it is determined that the energy storage battery needs to perform the equalization control specifically includes:
the equalization control judges, utilizes the electric core state detection module to periodically collect the electric core voltage of each energy storage battery in the battery array and carry out digital filtering and summarize, carries out the extreme value to the electric core voltage who gathers and differentiates, carries out the charge-discharge demand after obtaining maximum voltage extreme value and minimum voltage extreme value and the electronic identification code that the two corresponds and judges, and the charge-discharge demand judgement process specifically is:
comparing the difference value between the maximum voltage extreme value and the cell voltage median of the single energy storage battery in the battery array, if the difference value between the maximum voltage extreme value and the cell voltage median is more than or equal to 5mV, performing discharge processing, judging whether the working state of a discharger and the routing state of a selection controller meet the current discharge requirement, if the discharge requirement is met, performing discharge parameter configuration on the selection controller, issuing a discharge instruction, and calling closed-loop discharge logic to discharge the battery array; if the difference value between the maximum voltage extreme value and the cell voltage median is less than 5mV, the summarized cell voltage is subjected to data coding and stored in a local storage unit;
comparing the difference value between the minimum voltage extreme value and the cell voltage median of the single energy storage battery in the battery array, if the difference value between the minimum voltage extreme value and the cell voltage median is more than or equal to 5mV, charging processing is required, whether the working state of the charger and the routing state of the selection controller meet the current charging requirement is judged, if the working state of the charger and the routing state of the selection controller meet the charging requirement, charging parameter configuration is carried out on the selection controller, and a charging instruction is issued to call closed-loop charging logic to charge the battery array; and if the difference value between the minimum voltage extreme value and the cell voltage median is less than 5mV, carrying out data coding on the summarized cell voltage and storing the data into a local storage unit.
Further, the invoking of the closed-loop discharging logic to perform the discharging process on the battery array specifically includes: after the selection controller receives the discharge instruction, the working states of the first discharger and the second discharger are obtained firstly, availability judgment and screening are carried out, the main discharger and the standby discharger are screened out, and discharge parameters are configured for the main discharger; detecting the path condition of the discharge loop according to the discharge condition, returning a discharge overtime error state word if the detection is overtime, and starting a main discharger to discharge the energy storage battery if the discharge condition is met; and in the discharging process, detecting the cell voltage of the energy storage battery in real time based on the energy storage requirement, if the detection is overtime, returning to a discharging overtime error state word, and if the detection is overtime, ending the current discharging process.
Further, the calling the closed-loop charging logic to perform the charging process on the battery array specifically includes: after receiving the charging instruction, the selection controller firstly obtains the working states of the first charger and the second charger and carries out availability judgment and screening to screen out a main charger and a standby charger and configure charging parameters for the main charger; detecting the access condition of the charging loop according to the charging condition, if the detection is overtime, returning a charging overtime error state word, and if the charging condition is met, starting a main charger to charge the energy storage battery; and in the charging process, detecting the cell voltage of the energy storage battery in real time based on the energy storage requirement, if the detection is overtime, returning a discharge overtime error status word, and if the detection is in accordance with the energy storage requirement, ending the current charging process.
This application adopts above technical scheme, possesses following beneficial effect at least: the application provides a lead-acid batteries energy storage power station monitoring management system includes data acquisition terminal, charge-discharge repair equipment, control management center, internet high in the clouds server and user operation terminal. The system utilizes the data acquisition terminal to acquire the operating parameters of each lead-acid battery in the energy storage power station and uploads the acquired operating parameters to the monitoring management center. The monitoring management center receives and stores the operation parameters, analyzes the operation parameters according to preset battery repair logic and battery balance control logic, and sends corresponding control instructions to the charging and discharging repair equipment according to the analysis results; and the charging and discharging repair equipment repairs the energy storage battery with the fault according to the control instruction issued by the monitoring management center and performs balance control on the battery array. According to the scheme, complete balance control service can be provided to keep the consistency of the energy storage battery array on the premise of not influencing operation, meanwhile, the on-line repair of a fault battery in the energy storage power station can be completed, the operation and maintenance cost of the energy storage power station is saved, and the experience dependence on operation and maintenance personnel is avoided. In addition, according to the scheme, the whole energy storage power station is subjected to centralized monitoring data acquisition and storage, historical data tracing can be achieved, the internet cloud server can conveniently read the operation parameters from the monitoring management center, the service life of the power station is predicted by the aid of an algorithm, the service life prediction result and the read operation parameters are pushed to the user operation terminal, and complete intelligent maintenance of the system is achieved.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the application.
Drawings
In order to more clearly illustrate the embodiments of the present application 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 obvious that the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic diagram illustrating a lead-acid battery energy storage power station monitoring management system architecture according to an embodiment;
FIG. 2 is a monitoring management center hardware architecture diagram, according to one embodiment;
fig. 3 is a flow diagram illustrating a method for monitoring and managing a lead-acid battery energy storage power station, according to an embodiment.
Detailed Description
In order to make the objects, technical solutions and advantages of the present application more apparent, the technical solutions of the present application will be described in detail below. It should be apparent that the described embodiments are only a few embodiments of the present application, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the examples given herein without making any creative effort, shall fall within the protection scope of the present application.
Referring to fig. 1, fig. 1 is a schematic diagram illustrating a lead-acid battery energy storage power station monitoring and management system architecture according to an exemplary embodiment. As shown in fig. 1, the system comprises a data acquisition terminal, a charging and discharging repair device, a monitoring management center, an internet cloud server and a user operation terminal; the monitoring management center is respectively connected with the data acquisition terminal and the charging and discharging repair equipment; the internet cloud server is connected with the monitoring management center through a network interface; the user operation terminal is connected with the Internet cloud server through a network; the data acquisition terminal is used for acquiring the operating parameters of each lead-acid battery in the energy storage power station and uploading the acquired operating parameter sets to the monitoring management center; the charging and discharging repair equipment is used for repairing the energy storage battery with faults according to the control instruction issued by the monitoring management center and performing balance control on the battery array; the monitoring management center is used for receiving and storing the operation parameters, analyzing the operation parameters according to preset battery repair logic and battery balance control logic, and sending corresponding control instructions to the charging and discharging repair equipment according to the analysis results; the internet cloud server is used for reading the operation parameters from the monitoring management center, predicting the service life of the power station by using an algorithm and pushing a service life prediction result and the read operation parameters to the user operation terminal. The battery array is a battery pack, and a plurality of energy storage batteries are connected in series.
Referring to fig. 2, in an embodiment, a hardware architecture of the monitoring management center includes a central processor, a storage unit, a touch screen, a bus transmission interface, a network support interface, and a power supply circuit; the central processor is respectively connected with the storage unit and the touch screen; the data acquisition terminal is connected with the central processor through a bus transmission interface; the internet cloud server establishes communication connection with the central processor through a network support interface; the central processor is connected with an external power supply through a power supply circuit. The monitoring management center is a control and information exchange center of the scheme, the central processor adopts a Rui-Chi micro company RK3568 as a core processor, and a linux system is built in the central processor to serve as an application service platform; and a mysql database is set up to perform data structured storage of the operation parameters of the whole energy storage power station in the charging and discharging process so as to provide a big data server for data support of a machine learning algorithm. The touch screen in the scheme is used for human-computer interaction of a user, the user can input a manual battery repair instruction to the central processor through the touch screen, and the control system performs manual battery repair. In addition, the monitoring management center is also provided with a plurality of auxiliary circuits for maintenance and operation.
Specifically, in the scheme of the application, the data acquisition terminal comprises a cell state detection module and a charge-discharge monitoring module, wherein the cell state detection module is used for detecting the cell voltage and the temperature of the energy storage battery; the charging and discharging monitoring module is used for monitoring the charging current and the discharging voltage of the energy storage battery. And a central processor in the monitoring management center is respectively connected with the battery cell state detection module and the charging and discharging monitoring module through a bus transmission interface. The battery cell state detection module adopts a battery management system to simulate a front-end chip ADI-LTC6813 to detect the state of the battery cell, the chip is a monitoring chip of a multi-channel sampling channel, can monitor the voltage and the temperature of the battery cell of the series-connected battery cells, and can also collect other state parameters of the energy storage battery, including but not limited to the voltage of a single battery, the temperature of a battery post, the current of a battery loop, the end voltage of a battery pack, the insulation resistance of a battery system and the like. Meanwhile, the charge and discharge monitoring module in the scheme of the application adopts the existing charge and discharge detection equipment such as a charge and discharge detector, a storage battery charge and discharge comprehensive tester or an intelligent charge and discharge comprehensive tester and the like, so that the charge and discharge current and voltage of the energy storage battery can be monitored in real time on line.
Specifically, in the scheme of the application, the charging and discharging repair device comprises a battery repair device, a charger, a discharger, a routing relay and a selection controller, and the selection controller is connected with the charger, the discharger and the routing relay respectively. And a central processor in the monitoring management center is respectively connected with the selection controller and the battery repair device through a bus transmission interface. The charger comprises a first charger and a second charger, and the selection controller is connected with the first charger and the second charger respectively. The discharger comprises a first discharger and a second discharger, and the selected controller is respectively connected with the first discharger and the second discharger. In the process of charging the battery, a user can select a proper charger as a main charger according to the working state of the charger, and simultaneously, use another charger as a standby charger. And if the working state of the first charger is detected to be unavailable and the working state of the second charger is detected to be available, selecting the second charger as a main charger, using the first charger as a standby charger, and executing a subsequent closed-loop charging process of the energy storage battery after the corresponding parameter configuration is completed.
Similarly, in the discharging process of the energy storage battery, the selection of the main discharger is also performed according to the working state of the discharger, a proper discharger is selected as the main discharger, another discharger is used as a standby discharger, and a closed-loop discharging process is executed after parameter configuration is completed.
The system not only meets the requirements of battery restoration logic function and lead-acid battery balance control, but also needs to complete functional modules such as data storage and summarization, energy storage power station running state data and throughput electric quantity, and provides rich and complete data support for background service business analysis. In the scheme, the internet cloud server can read the operation parameters from the monitoring management center, the service life of the power station is predicted by using the algorithm, the service life prediction result and the read operation parameters are pushed to the user operation terminal, and complete intelligent maintenance of the system is achieved. In addition, the system can also carry out fault and alarm device accurate positioning through an intelligent monitoring algorithm, generate alarm records to carry out pushing in modes of APP, short messages and the like, and can realize complete intelligent maintenance. The algorithms adopted in the service life prediction and fault location processes are all realized by the existing algorithm model technology, such as a battery RUL prediction technology, a valve-controlled lead-acid battery pack online state detection and fault prediction algorithm and the like, and the scheme of the application is not repeated herein.
Referring to fig. 3, fig. 3 is a flowchart illustrating a method for monitoring and managing a lead-acid battery energy storage power station, where the method is implemented by using the above-mentioned system for monitoring and managing a lead-acid battery energy storage power station, and the method includes:
s1: acquiring data, namely acquiring the operating parameters of each lead-acid battery in the energy storage power station by using a data acquisition terminal, and uploading the acquired operating parameters to a monitoring management center;
s2: the data storage, the monitoring management center carries out structuralization processing on the uploaded operation parameters and stores the structuralization operation parameters in a local storage unit;
s3: the data logic processing step, namely, reading historical operating parameters of the energy storage battery by a monitoring management center, judging the state of the energy storage battery according to preset battery repair logic and battery balance control logic, and sending a battery repair instruction to a battery repair device for battery repair if the energy storage battery is judged to be required to be repaired; if the energy storage battery needs to be subjected to equalization control, calling an equalization control flow to perform battery array equalization control;
s4: and analyzing background data, reading the structured operation parameters from a local database by the supervision and management center, predicting the service life of the power station by using an algorithm, and pushing the service life prediction result and the read structured operation parameters to the user operation terminal.
Further, in the scheme of the application, if it is determined that the energy storage battery needs to be repaired, the step of sending a battery repair instruction to the battery repair device to repair the battery specifically includes: firstly, establishing a battery repair control task, and periodically starting task execution according to a preset automatic battery repair cycle; judging whether the current time is in an automatic battery repairing period, if not, detecting a manual battery repairing instruction and prompting a user to select whether to perform manual repairing; if the user selects manual repair or the current time is in an automatic repair cycle, querying historical operating parameters of all single energy storage batteries in the current battery array from the storage unit, and downloading the historical operating parameters obtained by querying to a local cache; acquiring actual operation parameters of the current battery array through a data acquisition terminal, and screening data of the locally cached historical operation parameters according to a battery repair check rule if the actual operation parameters meet preset battery repair conditions; if the batteries to be repaired are screened out, the corresponding electronic identification codes are stored in the central processor, the central processor combines the received electronic identification codes to form a battery repairing instruction and sends the battery repairing instruction to the battery repairing device, and the batteries to be repaired are repaired one by one; and if the battery to be repaired is not screened out, generating a current repairing record, and configuring repairing information of the current battery array to be stored in a storage unit for later-stage calculation and tracing. The battery repair check rule is that cyclic retrieval is carried out according to the electronic number (namely an electronic identification code) of the energy storage battery in the energy storage power station, and when the energy storage battery needing power supplement exists more than 10 times in the last 15 charging and discharging periods, the capacity attenuation of the energy storage battery is considered to be serious, and the battery needs to be repaired or reactivated.
The preset battery repair logic part is a recycling process aiming at the gradient utilization battery, the lead-acid battery in the energy storage power station is in a capacity attenuation state such as internal polar plate vulcanization, the battery polar plate is effectively desulfurized through the repair activation process, the electrochemical reaction of charging and discharging can be fully completed, and the available capacity is released to the maximum level. In the scheme of the application, the repair activation logic of the lead-acid battery specifically comprises: executing a battery repair activation process, judging whether the current time reaches an automatic repair period set by a system, if so, directly reading and processing subsequent data, if not, detecting and acquiring a local manual repair mark, prompting a user whether to perform manual repair through a touch screen, returning to the battery repair activation process when the user selects no manual repair, and if so, entering the subsequent data reading and processing process. In the data reading processing flow, when a user selects manual repair or reaches an automatic repair period, a database in a storage unit is accessed first, historical charging and discharging process data of each single battery in a battery pack is retrieved, the cell voltages of the single batteries in a battery array are periodically collected through a voltage detection module (namely a cell state detection module) for data summarization, whether an unbalanced state exists in a lead-acid battery (namely an energy storage battery) is judged, if the unbalanced state exists, an unbalanced sign is transmitted to an equalization control task, and meanwhile, a repair error state word is returned and a battery repair activation process is executed; and if the unbalanced state does not exist, acquiring the working state and the use plan time of the current battery array, and circularly searching the energy storage battery which needs to be recharged for more than 10 times in the last 15 charging and discharging periods, namely the battery to be repaired according to the electronic number (namely the electronic identification code) of the energy storage battery when the battery array is idle and the use plan allows. If the battery to be repaired does not exist, the battery repairing completion status word is returned and the battery repairing activation process is executed, if the battery to be repaired exists, the battery repairing logic is called to control the battery repairing device to repair the batteries to be repaired one by one, the status word is waited to be returned, and the repairing completion status word is returned after the repairing of all the batteries to be repaired is completed, so that the battery repairing is completed.
Further, the battery repair process of the battery repair device is as follows: the selection controller is positioned to the position of the battery needing to be repaired through the transmitted parameters, requests the route of the target battery repair through the bus, collects the state of the route relay through the bus, and judges whether the whole battery repair circuit is connected or not, namely whether the route relay is completely closed or not. And if the battery repairing circuit is connected, the battery repairing device is started to repair the batteries to be repaired, and the repairing process is finished after the repairing of all the batteries is finished.
Further, in one embodiment, in the scheme of the application, for a battery array of an energy storage power station, the consistency control of the batteries is crucial, and the capacity attenuation of a single battery seriously affects the whole capacity of the whole charging station, so that the electric energy throughput capacity of one charging and discharging cycle is directly affected; the key for keeping the batteries in the station consistent is to control the charge and discharge processes of all the batteries to approach to synchronization infinitely in the charge and discharge states; due to the difference of battery internal resistance, production process, temperature and the like, a special logic part needs to be designed to charge and discharge the outlier battery, so that the infinite approaching of the capacity of the battery is ensured, and the approximately uniform effect is realized;
the lead-acid battery balance control logic is divided into three parts: balance control judgment, a closed-loop charging process and a closed-loop discharging process.
The balance control logic mainly selects a plurality of outlier batteries from the battery array, assigns corresponding logic to charge and discharge according to the outlier characteristics, and enables the current charge capacity of the battery to approach to other batteries of the same group. The specific equalization control judgment process specifically comprises the following steps:
and (4) balance control judgment, namely periodically acquiring the cell voltages of all energy storage cells in the cell array by using a cell state detection module, carrying out digital filtering and gathering, carrying out extreme value judgment on the gathered cell voltages, and carrying out charge and discharge demand judgment after obtaining a maximum voltage extreme value, a minimum voltage extreme value and electronic identification codes corresponding to the maximum voltage extreme value and the minimum voltage extreme value. The charge and discharge requirement judging process specifically comprises the following steps:
comparing the difference value of the maximum voltage extreme value and the cell voltage median of the single energy storage battery in the battery array, if the difference value of the maximum voltage extreme value and the cell voltage median is more than or equal to 5mV, performing discharge processing, judging whether the working state of the discharger and the routing state of the selection controller meet the current discharge requirement, if the discharge requirement is met, performing discharge parameter configuration on the selection controller, issuing a discharge instruction, and calling closed-loop discharge logic to discharge the battery array; if the difference value between the maximum voltage extreme value and the cell voltage median is less than 5mV, the summarized cell voltage is subjected to data coding and stored in a local storage unit;
comparing the difference value between the minimum voltage extreme value and the cell voltage median of the single energy storage battery in the battery array, if the difference value between the minimum voltage extreme value and the cell voltage median is more than or equal to 5mV, charging processing is required, whether the working state of the charger and the routing state of the selection controller meet the current charging requirement is judged, if the working state of the charger and the routing state of the selection controller meet the charging requirement, charging parameter configuration is carried out on the selection controller, and a charging instruction is issued to call closed-loop charging logic to charge the battery array; and if the difference value between the minimum voltage extreme value and the cell voltage median is less than 5mV, carrying out data coding on the summarized cell voltage and storing the data into a local storage unit.
In addition, in the charging and discharging requirement judging process, if the cell voltages of the energy storage battery are relatively concentrated and the difference value between the maximum voltage extreme value and the minimum voltage extreme value is less than 10mV, the summarized cell voltages are directly subjected to data coding and stored in a local storage unit for tracing.
Specifically, in the scheme of the application, the closed-loop discharging process is to discharge the battery according to parameters configured by superior control logic, the battery is discharged by a specially-deployed peripheral discharging device, after a discharging instruction is received, the main discharger and the alternative dischargers are selected, the available dischargers are found, then the collected information is uploaded, whether a power routing relay recommended by a selection controller is completely closed or not is collected through a bus, namely whether a discharging path is unblocked or not is judged, and if the detection is overtime, a discharging overtime error state word is returned; and after the discharging condition is met, starting to send a discharging instruction to the bus, starting a discharging process, carrying out closed-loop management in the whole process, acquiring the current voltage of the target battery through the bus in real time, configuring the discharging power of the discharger, and effectively preventing the possibility of over-discharge or under-discharge through a feedback logic loop.
Further, in the present application, the invoking of the closed-loop discharging logic to perform the discharging process on the battery array specifically includes: after receiving the discharging instruction, the selection controller firstly obtains the working states of the first discharger and the second discharger, judges and screens the availability, screens out the main discharger and the standby discharger, configures discharging parameters for the main discharger, if the first discharger is available, the first discharger is used as the main discharger for discharging, the second discharger is used as the standby discharger, and judges whether the second discharger is available or not when the first discharger is unavailable, if the first discharger is available, the second discharger is set as the main discharger, and the first discharger is used as the standby discharger. In addition, a discharge timeout error is returned when neither discharger is available. After the main discharger is determined, detecting the path condition of the discharge loop according to the discharge condition, if the detection is overtime, returning a discharge overtime error state word, and if the discharge condition is met, namely, the path, starting the main discharger to discharge the energy storage battery; and in the discharging process, the cell voltage of the target discharging energy storage battery is detected in real time through the bus based on the energy storage requirement, if the detection is overtime, a discharging overtime error state word is returned, and if the energy storage requirement is met, the current discharging process is ended.
Specifically, in the scheme of the application, the charging process and the discharging process are similar, the battery charging is carried out according to parameters configured by superior control logic, the charging is completed by a specially-deployed peripheral charging device, after a charging instruction is received, the main charger and the alternative charger are judged and selected, the information is uploaded after the available charger is found, whether a power routing relay recommended by a selection controller is completely closed or not is collected through a bus, namely whether a charging path is unblocked or not is judged, and if the detection is overtime, a charging overtime error status word is returned; after the charging condition is met, a charging instruction is sent to the bus, the charging process is started, closed-loop management is adopted in the whole process, the current voltage of the target battery is obtained through the bus in real time, the discharging power of the charger is configured, and the possibility of over-charging or under-charging is effectively prevented through a feedback logic loop
Further, in the present application, the invoking of the closed-loop charging logic to perform the charging process on the battery array specifically includes: after receiving the charging instruction, the selection controller firstly acquires the working states of the first charger and the second charger, judges and screens the availability, screens out the main charger and the standby charger and configures charging parameters for the main charger; detecting the access condition of the charging loop according to the charging condition, if the detection is overtime, returning a charging overtime error state word, and if the charging condition is met, starting a main charger to charge the energy storage battery; and in the charging process, detecting the cell voltage of the energy storage battery in real time based on the energy storage requirement, if the detection is overtime, returning a discharge overtime error status word, and if the detection is in accordance with the energy storage requirement, ending the current charging process.
It is understood that the same or similar parts in the above embodiments may be mutually referred to, and the same or similar contents in other embodiments may be referred to for the contents which are not described in detail in some embodiments.
It should be noted that, in the description of the present application, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. In addition, in the description of the present application, the meaning of "plurality" means at least two unless otherwise specified.
It will be understood that when an element is referred to as being "fixed" or "disposed" to another element, it can be directly on the other element or intervening elements may also be present; when an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present, and further, as used herein, connected may include wirelessly connected; the term "and/or" is used to include any and all combinations of one or more of the associated listed items.
It should be understood that portions of the present application may be implemented in hardware, software, firmware, or a combination thereof. In the above embodiments, the various steps or methods may be implemented in software or firmware stored in memory and executed by a suitable instruction execution system. For example, if implemented in hardware, as in another embodiment, any one or combination of the following technologies, which are well known in the art, may be used: a discrete logic circuit having a logic gate circuit for implementing a logic function on a data signal, an application specific integrated circuit having an appropriate combinational logic gate circuit, a Programmable Gate Array (PGA), a Field Programmable Gate Array (FPGA), or the like.
It will be understood by those skilled in the art that all or part of the steps carried by the method for implementing the above embodiments may be implemented by hardware related to instructions of a program, which may be stored in a computer readable storage medium, and when the program is executed, the program includes one or a combination of the steps of the method embodiments.
In addition, functional units in the embodiments of the present application may be integrated into one processing module, or each unit may exist alone physically, or two or more units are integrated into one module. The integrated module can be realized in a hardware mode, and can also be realized in a software functional module mode. The integrated module, if implemented in the form of a software functional module and sold or used as a stand-alone product, may also be stored in a computer readable storage medium.
The storage medium mentioned above may be a read-only memory, a magnetic or optical disk, etc.
In the description herein, reference to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the application. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
Although embodiments of the present application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present application, and that variations, modifications, substitutions and alterations may be made to the above embodiments by those of ordinary skill in the art within the scope of the present application.

Claims (10)

1. A lead-acid battery energy storage power station monitoring and management system is characterized by comprising a data acquisition terminal, charging and discharging repair equipment, a monitoring management center, an internet cloud server and a user operation terminal; the monitoring management center is respectively connected with the data acquisition terminal and the charging and discharging repair equipment; the internet cloud server is connected with the monitoring management center through a network interface; the user operation terminal is connected with the Internet cloud server through a network; the data acquisition terminal is used for acquiring the operating parameters of each lead-acid battery in the energy storage power station and uploading the acquired operating parameter sets to the monitoring management center; the charging and discharging repair equipment is used for repairing the energy storage battery with faults according to the control instruction issued by the monitoring management center and performing balance control on the battery array; the monitoring management center is used for receiving and storing the operation parameters, analyzing the operation parameters according to preset battery repair logic and battery balance control logic, and sending corresponding control instructions to the charging and discharging repair equipment according to the analysis results; the internet cloud server is used for reading the operation parameters from the monitoring management center, predicting the service life of the power station by using an algorithm and pushing a service life prediction result and the read operation parameters to the user operation terminal.
2. The lead-acid battery energy storage power station monitoring and management system of claim 1, wherein the monitoring and management center comprises a central processor, a storage unit, a touch screen, a bus transmission interface, a network support interface and a power supply circuit; the central processor is respectively connected with the storage unit and the touch screen; the data acquisition terminal is connected with the central processor through a bus transmission interface; the internet cloud server establishes communication connection with the central processor through a network support interface; the central processor is connected with an external power supply through a power supply circuit.
3. The lead-acid battery energy storage power station monitoring management system of claim 1, wherein the data acquisition terminal comprises a cell state detection module and a charge-discharge monitoring module, and the cell state detection module is used for detecting the cell voltage and temperature of the energy storage battery; the charging and discharging monitoring module is used for monitoring the charging current and the discharging voltage of the energy storage battery; and the monitoring management center is respectively connected with the battery cell state detection module and the charging and discharging monitoring module.
4. The lead-acid battery energy storage power station monitoring and management system of claim 1, characterized in that the charging and discharging repair device comprises a battery repair device, a charger, a discharger, a routing relay and a selection controller, wherein the selection controller is respectively connected with the charger, the discharger and the routing relay; and the monitoring management center is respectively connected with the selection controller and the battery repair device.
5. The lead-acid battery energy storage power station monitoring and management system of claim 4, wherein the charger comprises a first charger and a second charger, and the selection controller is respectively connected with the first charger and the second charger; the discharger comprises a first discharger and a second discharger, and the selection controller is respectively connected with the first discharger and the second discharger.
6. A lead-acid battery energy storage power station monitoring and management method realized by the lead-acid battery energy storage power station monitoring and management system of any one of claims 1 to 5 is characterized by comprising the following steps:
s1: acquiring data, namely acquiring the operating parameters of each lead-acid battery in the energy storage power station by using a data acquisition terminal, and uploading the acquired operating parameters to a monitoring management center;
s2: data storage, the monitoring management center carries out structuralization processing on the uploaded operation parameters and stores the structuralization operation parameters in a local storage unit;
s3: the data logic processing, namely reading the historical operating parameters of the energy storage battery by the monitoring management center, judging the state of the energy storage battery according to preset battery repair logic and battery balance control logic, and sending a battery repair instruction to a battery repair device for battery repair if the energy storage battery is judged to need to be repaired; if the energy storage battery needs to be subjected to equalization control, calling an equalization control flow to perform battery array equalization control;
s4: and (4) background data analysis, wherein the supervision and management center reads the structured operation parameters from the local database, predicts the service life of the power station by using an algorithm and pushes the service life prediction result and the read structured operation parameters to the user operation terminal.
7. The lead-acid battery energy storage power station monitoring and management method of claim 6, wherein the step of sending a battery repair instruction to a battery repair device for battery repair if it is determined that the energy storage battery needs to be repaired specifically comprises the steps of: firstly, establishing a battery repair control task, and periodically starting task execution according to a preset automatic battery repair cycle; judging whether the current time is in an automatic battery repairing period, if not, detecting a manual battery repairing instruction and prompting a user to select whether to perform manual repairing; if the user selects manual repair or the current time is in an automatic repair cycle, historical operating parameters of all single energy storage batteries in the current battery array are inquired from the storage unit, and the inquired historical operating parameters are downloaded to a local cache; acquiring actual operation parameters of the current battery array through a data acquisition terminal, and screening data of the locally cached historical operation parameters according to a battery repair check rule if the actual operation parameters meet preset battery repair conditions; if the batteries to be repaired are screened out, the corresponding electronic identification codes are stored in the central processor, the central processor combines the received electronic identification codes to form a battery repairing instruction and sends the battery repairing instruction to the battery repairing device, and the batteries to be repaired are repaired one by one; and if the battery to be repaired is not screened out, generating a current repair record, and configuring the repair information of the current battery array to be stored in the storage unit.
8. The lead-acid battery energy storage power station monitoring and management method of claim 6, wherein the step of calling the equalization control flow to perform the battery array equalization control process if the energy storage battery needs to perform the equalization control specifically comprises the steps of:
the equalization control judges, utilizes the electric core state detection module to periodically collect the electric core voltage of each energy storage battery in the battery array and carry out digital filtering and summarize, carries out the extreme value to the electric core voltage who gathers and differentiates, carries out the charge-discharge demand after obtaining maximum voltage extreme value and minimum voltage extreme value and the electronic identification code that the two corresponds and judges, and the charge-discharge demand judgement process specifically is:
comparing the difference value between the maximum voltage extreme value and the cell voltage median of the single energy storage battery in the battery array, if the difference value between the maximum voltage extreme value and the cell voltage median is more than or equal to 5mV, performing discharge processing, judging whether the working state of a discharger and the routing state of a selection controller meet the current discharge requirement, if the discharge requirement is met, performing discharge parameter configuration on the selection controller, issuing a discharge instruction, and calling closed-loop discharge logic to discharge the battery array; if the difference value between the maximum voltage extreme value and the cell voltage median is less than 5mV, performing data coding on the summarized cell voltage and storing the data into a local storage unit;
comparing the difference value between the minimum voltage extreme value and the cell voltage median of the single energy storage battery in the battery array, if the difference value between the minimum voltage extreme value and the cell voltage median is more than or equal to 5mV, charging processing is required, whether the working state of the charger and the routing state of the selection controller meet the current charging requirement or not is judged, if the charging requirement is met, the selection controller is subjected to charging parameter configuration, and a charging instruction is issued to call closed-loop charging logic to charge the battery array; and if the difference value between the minimum voltage extreme value and the cell voltage median is less than 5mV, carrying out data coding on the summarized cell voltage and storing the data into a local storage unit.
9. The method for lead-acid battery energy storage power station monitoring and management according to claim 8, wherein the invoking of the closed-loop discharge logic to perform the discharge process on the battery array specifically comprises: after the selection controller receives a discharging instruction, the working states of the first discharger and the second discharger are obtained firstly, availability judgment and screening are carried out, a main discharger and a standby discharger are screened out, and discharging parameters are configured for the main discharger; detecting the path condition of the discharge loop according to the discharge condition, returning a discharge overtime error state word if the detection is overtime, and starting a main discharger to discharge the energy storage battery if the discharge condition is met; and in the discharging process, detecting the cell voltage of the energy storage battery in real time based on the energy storage requirement, if the detection is overtime, returning to a discharging overtime error state word, and if the detection is in accordance with the energy storage requirement, ending the current discharging process.
10. The method for lead-acid battery energy storage power station monitoring and management according to claim 8, wherein the calling of the closed-loop charging logic to perform a charging process on the battery array specifically comprises: after receiving the charging instruction, the selection controller firstly acquires the working states of the first charger and the second charger, judges and screens the availability, screens out the main charger and the standby charger and configures charging parameters for the main charger; detecting the access condition of the charging loop according to the charging condition, if the detection is overtime, returning a charging overtime error state word, and if the charging condition is met, starting a main charger to charge the energy storage battery; and in the charging process, detecting the cell voltage of the energy storage battery in real time based on the energy storage requirement, if the detection is overtime, returning a discharge overtime error status word, and if the detection is in accordance with the energy storage requirement, ending the current charging process.
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