CN115421063A - Power distribution energy storage battery monitoring system of power grid - Google Patents
Power distribution energy storage battery monitoring system of power grid Download PDFInfo
- Publication number
- CN115421063A CN115421063A CN202211107624.4A CN202211107624A CN115421063A CN 115421063 A CN115421063 A CN 115421063A CN 202211107624 A CN202211107624 A CN 202211107624A CN 115421063 A CN115421063 A CN 115421063A
- Authority
- CN
- China
- Prior art keywords
- energy storage
- storage battery
- warning information
- target
- temperature
- 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
Links
Images
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/36—Arrangements for testing, measuring or monitoring the electrical condition of accumulators or electric batteries, e.g. capacity or state of charge [SoC]
- G01R31/392—Determining battery ageing or deterioration, e.g. state of health
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D21/00—Measuring or testing not otherwise provided for
- G01D21/02—Measuring two or more variables by means not covered by a single other subclass
-
- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B19/00—Alarms responsive to two or more different undesired or abnormal conditions, e.g. burglary and fire, abnormal temperature and abnormal rate of flow
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0013—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries acting upon several batteries simultaneously or sequentially
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0047—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with monitoring or indicating devices or circuits
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The invention relates to a power grid power distribution energy storage battery monitoring system which comprises a target server, a parameter acquisition device and a protection control module, wherein when an energy storage battery is abnormal, the protection control module can generate and provide corresponding protection control signals, abnormal early warning information and fault prompt information to the target server according to at least part of target parameters, and the target server can enable a corresponding action execution device to execute corresponding protection actions according to received protection control signals. A user can clearly and intuitively see main parameters, operation information and related analysis reports of the energy storage battery pack by logging in a target server, a basis is provided for battery performance analysis research, a guarantee is provided for stable and reliable operation of the system, and the power grid power distribution energy storage battery monitoring system capable of realizing real-time remote intelligent monitoring is realized.
Description
Technical Field
The disclosure relates to the field of energy storage battery monitoring, in particular to a power grid power distribution energy storage battery monitoring system.
Background
The power distribution and energy storage battery monitoring system of the power grid is an important component of a battery energy storage system, is a control center of the energy storage system, and plays a role in uploading, issuing, controlling and optimizing. At present, a battery energy storage system is formed by combining a plurality of single batteries in series and parallel connection, so as to form a large-capacity battery system.
The traditional power grid power distribution energy storage battery monitoring system generally adopts traditional analog signal acquisition, is not networked, is slow in data signal acquisition and low in precision, cannot comprehensively reflect the state of an energy storage battery during operation, and cannot feed back the state of the battery in real time, so that potential safety hazards are brought.
Disclosure of Invention
Therefore, it is necessary to provide a stable and reliable power distribution and energy storage battery monitoring system for a power grid, which can perform real-time remote intelligent monitoring in view of the above problems in the background art.
In order to achieve the above objects and other objects, the present application provides a power distribution and energy storage battery monitoring system for a power grid, wherein the energy storage battery comprises a plurality of battery packs electrically connected, and the monitoring system comprises: the system comprises a target server, a parameter acquisition device and a protection control module. The parameter acquisition device is connected with the target server and is used for acquiring and uploading target parameters to the target server, wherein the target parameters comprise at least one of power distribution related parameters, cabinet related parameters and battery related parameters of a power grid, and the cabinet related parameters comprise environmental parameters and/or switch state parameters; the protection control module is connected with the parameter acquisition device and the target server and is used for generating and providing corresponding protection control signals, abnormal early warning information and fault prompt information to the target server according to at least part of target parameters; the protection control signal is used for controlling the corresponding action execution device to execute the corresponding protection action.
In the power distribution energy storage battery monitoring system in the above embodiment, when the energy storage battery is in a normal working state, the signals of the control interfaces of the channels are high-level signals, and various state information of the energy storage battery is collected by the parameter collecting device, and the target parameters are uploaded to the target server. When the energy storage battery is abnormal, the protection control module generates and provides corresponding protection control signals, abnormal early warning information and fault prompt information to the target server according to at least part of target parameters, and the target server enables the corresponding action execution device to execute corresponding protection actions according to the received protection control signals. With traditional electric wire netting distribution energy storage battery monitored control system's non-networking, gather slowly, the precision is low, the state of energy storage battery when can not reacting the operation comprehensively, can not feed back the battery state in real time and compare, the electric wire netting distribution energy storage battery monitored control system of this application utilizes parameter acquisition device to gather real-time parameter to utilize target server's analysis and processing, the state of energy storage battery when reacting the operation comprehensively guarantees that energy storage battery is in the environment of safety and stability. A user can clearly and intuitively see main parameters, operation information and related analysis reports of the energy storage battery pack by logging in a target server, a basis is provided for battery performance analysis research, a guarantee is provided for stable and reliable operation of the system, and the power grid power distribution energy storage battery monitoring system capable of realizing real-time remote intelligent monitoring is realized.
In some embodiments, the environmental parameter comprises a temperature and humidity value; the switch state parameters comprise door opening state information; the parameter acquisition device comprises a processor, and at least one of a battery management device, a voltage acquisition module, a current acquisition module, a battery management device parameter acquisition module, a temperature and humidity sensor, a battery temperature sensor, a cabinet door opening state detection module and a cabinet door opening time detection module which are connected with the processor, wherein the voltage acquisition module is used for acquiring the target voltage of single-phase alternating current commercial power; the current acquisition module is used for acquiring the target current of the single-phase alternating current commercial power; the battery management equipment parameter acquisition module is used for acquiring battery parameters of the battery management equipment, wherein the battery parameters comprise at least one of charging voltage, charging current, charging temperature, discharging voltage, discharging current and discharging temperature of the battery; the temperature and humidity sensor is used for acquiring temperature and humidity values of the cabinet, wherein the temperature and humidity values comprise temperature values and/or humidity values; the battery temperature sensor is used for acquiring the temperature value of the battery pack; the cabinet door opening state detection module is used for detecting the door opening state of the cabinet and generating door opening state information; the cabinet door opening time detection module is used for detecting the door opening time of the cabinet; the processor is used for receiving and processing at least one of target voltage, current, battery parameters, temperature and humidity values of the single-phase alternating-current commercial power, temperature values of the battery pack, door opening state information and door opening time, and generating and uploading target parameters to the target server. The parameter acquisition device acquires various parameters, can comprehensively reflect the state of the energy storage battery, ensures that the energy storage battery is in a safe and stable environment, and provides a stable and reliable power grid power distribution energy storage battery monitoring system.
In some embodiments, the voltage acquisition module includes an ac transformer and a first differential operational amplifier circuit. The alternating current transformer is used for collecting the initial voltage of the single-phase alternating current commercial power; the first differential operational amplification circuit is configured to: the first input end is connected with the output end of the alternating current transformer, the second input end is connected with the first preset reference voltage, and the output end is connected with the analog signal acquisition end of the processor and used for amplifying the initial voltage and generating and transmitting the target voltage to the processor. Through the first differential operational amplifier circuit, the voltage acquisition module can accurately acquire the real-time change condition of the battery voltage, so that the battery can be monitored conveniently.
In some embodiments, the current collection module comprises a current transformer and a second differential operational amplifier circuit. The current transformer is used for collecting the initial current of the single-phase alternating current commercial power; the second differential operational amplification circuit is configured to: the first input end is connected with the output end of the current transformer, the second input end is connected with a second preset reference voltage, and the output end is connected with the analog signal acquisition end of the processor and used for amplifying the initial current and generating and transmitting the target current to the processor. Through the second differential operational amplifier circuit, the current acquisition module can accurately acquire the real-time change condition of the battery current, so that the battery can be monitored conveniently.
In some embodiments, the abnormality warning information includes at least one of overvoltage warning information, undervoltage warning information, cabinet high-temperature warning information, cabinet humidity warning information, and cabinet door opening abnormality warning information; the fault prompt information comprises power failure fault prompt information; the protection control module is configured to perform at least one of the following steps: if the target voltage is greater than or equal to 250V or the target current is greater than or equal to 5A, generating overvoltage early warning information; and if the target voltage is less than or equal to 50V or the target current is less than or equal to 5mA, generating undervoltage early warning information or power failure fault prompting information, and avoiding the burning of a power supply system caused by abnormal commercial voltage and current. If the temperature value is greater than or equal to a preset cabinet temperature threshold value, generating cabinet high-temperature early warning information; if the humidity value is larger than or equal to the preset cabinet humidity threshold value, cabinet humidity early warning information is generated, it is ensured that system equipment works in a normal temperature and humidity environment, and the temperature and humidity threshold value can be set according to the equipment installation position. If the door opening time is larger than the preset door opening time threshold, generating abnormal early warning information of the door opening of the cabinet, and avoiding that the cabinet door is forgotten to be closed, so that the equipment cabinet is in a door opening state and the protection of related equipment in the cabinet is lost.
In some embodiments, the abnormality warning information includes battery overcharge warning information and/or battery overdischarge warning information; the protection control module is configured to perform at least one of the following steps: if the charging voltage of the battery pack is greater than or equal to 3.65V, generating corresponding battery pack overcharge early warning information; and if the discharge voltage of the battery pack is less than or equal to 2.0V, generating corresponding battery pack overdischarge warning information. Avoid causing harmful effects to the group battery, improve the life and the security of group battery.
In some embodiments, the abnormality warning information includes at least one of energy storage battery overcharge warning information, energy storage battery overdischarge warning information, energy storage battery charge high temperature warning information, and energy storage battery charge low temperature warning information; the protection control module is configured to perform at least one of the following steps: if the charging voltage of the energy storage battery is greater than or equal to 28V or the charging current/discharging current is greater than 5A, generating corresponding over-charging early warning information of the energy storage battery, and avoiding the energy storage battery from being burnt by excessive voltage or current; if the discharge voltage of the energy storage battery is less than or equal to 20V, generating corresponding energy storage battery overdischarge early warning information to avoid the energy storage battery from being burnt out due to voltage overdischarge; if the charging temperature of the energy storage battery is greater than or equal to 55 ℃, generating corresponding energy storage battery charging high-temperature early warning information, and avoiding the ignition and combustion accidents caused by overhigh temperature of the energy storage battery in the charging process; and if the charging temperature of the energy storage battery is less than or equal to minus 20 ℃, generating corresponding energy storage battery charging low-temperature early warning information, and avoiding irreversible influence on the service life of the battery due to internal resistance reduction and lithium condensation formed on a cathode caused by electrolyte coagulation in the energy storage battery at low temperature.
In some embodiments, the target server includes a database server and a monitoring server. The database server is connected with the parameter acquisition device and the protection control module and is used for storing target parameters and uploading the abnormal early warning information and the fault prompt information; the monitoring server is connected with the database server and used for prompting the supervisory personnel according to the abnormal early warning information and the fault prompting information. Compared with the traditional supervision of field personnel, the method and the system only need background monitoring, greatly reduce the operating cost of the system, save manpower, material resources and financial resources and realize intelligent digital interaction.
In some embodiments, the monitoring server is further configured to obtain a prompt duration of the anomaly warning information; and if the prompt duration exceeds a preset prompt time threshold, generating a corresponding protection control signal, wherein the protection control signal is used for controlling a corresponding target object to stop working, and avoiding damage to equipment caused by failure alarm of the system.
In some embodiments, the grid distribution energy storage battery monitoring system further comprises a display, wherein the display is connected with the database server through the monitoring server; the monitoring server is also used for generating a corresponding data report according to the acquired data index and displaying the data report through the display. The data are displayed in real time through the display, so that monitoring personnel can monitor the field situation visually and conveniently, accurate results can be obtained without depending on experience of the monitoring personnel, accidents are prevented, the monitoring personnel can read accurate data regularly, and monitoring on the safety of the battery is improved.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present disclosure, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the description below are only some embodiments of the present disclosure, and it is obvious for those skilled in the art that drawings of other embodiments can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic diagram of an architecture of a power distribution and energy storage battery monitoring system of a power grid provided in a first embodiment of the present disclosure;
fig. 2 is a schematic architecture diagram of a power distribution and energy storage battery monitoring system of a power grid according to a second embodiment of the present disclosure;
fig. 3 is a schematic diagram of an architecture of a power distribution and energy storage battery monitoring system of a power grid provided in a third embodiment of the present disclosure;
fig. 4 is a schematic diagram of an architecture of a power distribution and energy storage battery monitoring system of a power grid provided in a fourth embodiment of the present disclosure;
fig. 5 is a schematic diagram of an architecture of a power distribution and energy storage battery monitoring system of a power grid provided in a fifth embodiment of the present disclosure;
fig. 6 is a schematic diagram of an architecture of a power distribution and energy storage battery monitoring system of a power grid provided in a sixth embodiment of the present disclosure;
fig. 7 is a flowchart of a power distribution and energy storage battery monitoring system of a power grid provided in a seventh embodiment of the present disclosure;
wherein:
100. a power distribution and energy storage battery monitoring system of a power grid; 10. a parameter acquisition device; 11. a battery management device;
12. a voltage acquisition module; 121. an AC transformer; 122. a first preset reference voltage;
123. a first differential operational amplifier circuit; 13. a current collection module; 131. a current transformer;
132. a second preset reference voltage; 133. a second differential operational amplifier circuit;
14. a battery management device parameter acquisition device; 15. a temperature and humidity sensor; 16. a battery temperature sensor;
17. a cabinet door opening state detection module; 18. a cabinet door opening time detection module;
19. a processor; 20. a protection control module; 30. a target server; 31. a database server; 32. a monitoring server; 40. a display.
Detailed Description
To facilitate an understanding of the present disclosure, the present disclosure will now be described more fully with reference to the accompanying drawings. Preferred embodiments of the present disclosure are set forth in the accompanying drawings. This disclosure may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.
Where the terms "comprising," "having," and "including" are used herein, another component may be added unless a specific limiting term is used, such as "only," "consisting of 8230; \8230composition," etc. Unless mentioned to the contrary, singular terms may include the plural and are not to be construed as being one in number.
In the present disclosure, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integral; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or may be connected through the use of two elements or the interaction of two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
Furthermore, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or to implicitly indicate a number of the indicated technical features.
As shown in fig. 1, the present application provides a power grid distribution energy storage battery monitoring system 100, wherein the energy storage battery comprises a plurality of battery packs electrically connected to each other, and the monitoring system comprises: a target server 30, a parameter collecting device 10 and a protection control module 20. The parameter acquisition device 10 is connected with the target server 30 and used for acquiring and uploading target parameters to the target server 30, wherein the target parameters comprise at least one of power distribution related parameters of a power grid, cabinet related parameters and battery related parameters, and the cabinet related parameters comprise environmental parameters and/or switch state parameters; the protection control module is connected with the parameter acquisition device and the target server 30 and is used for generating and providing corresponding protection control signals, abnormal early warning information and fault prompt information to the target server according to at least part of target parameters; the protection control signal is used for controlling the corresponding action execution device to execute the corresponding protection action.
As an example, continuing to refer to fig. 1, when the energy storage battery is in a normal operating state, the signals of the control interfaces of the respective channels are high level signals, and various state information of the energy storage battery is collected by the parameter collecting device 10, and the target parameters are uploaded to the target server 30. When the energy storage battery is abnormal, the protection control module 20 generates and provides a corresponding protection control signal, abnormal early warning information and fault prompt information to the target server 30 according to at least part of the target parameters, and the target server 30 enables the corresponding action execution device to execute a corresponding protection action according to the received protection control signal. With traditional electric wire netting distribution energy storage battery monitored control system 100's non-networking, gather slowly, the precision is low, can not reflect the state of energy storage battery when operation comprehensively, can not feed back the battery state in real time and compare, electric wire netting distribution energy storage battery monitored control system 100 of this application utilizes parameter acquisition device 10 to gather real-time parameter to utilize the analysis and the processing of target server 30, the state of energy storage battery when operation comprehensively reflects ensures that energy storage battery is in the environment of safety and stability. The user can clearly and visually see the main parameters, the operation information and the related analysis report of the energy storage battery pack by logging in the target server 30, so that a basis is provided for the analysis and research of the battery performance, the stable and reliable operation of the system is guaranteed, and the power grid power distribution and energy storage battery monitoring system 100 capable of real-time remote intelligent monitoring is realized.
As an example, the Power Distribution energy storage battery monitoring system 100 of the Power grid has an IEC61850 module and a Power Distribution Unit (PDU) collection terminal, and IEC61850 is the only global universal standard in the field of Power system automation. The standardization of engineering operation of the intelligent substation is realized through the realization of standards. The engineering implementation of the intelligent substation becomes standard, uniform and transparent. No matter which system integrator establishes the intelligent substation project, the structure and layout of the whole substation can be known through a total station System Configuration Description (SCD), and the method has irreplaceable effect on development of the intelligent substation. The PDU acquisition end is a power distribution unit acquisition end.
As shown in fig. 2, in some embodiments, the environmental parameter includes a temperature and humidity value; the switch state parameters comprise door opening state information; the parameter acquisition device 10 comprises a processor 19, and at least one of a battery management device 11 and a voltage acquisition module 12, a current acquisition module 13, a battery management device parameter acquisition module 14, a temperature and humidity sensor 15, a battery temperature sensor 16, a cabinet door opening state detection module 17 and a cabinet door opening time detection module 18 which are connected with the processor 19, wherein the voltage acquisition module 12 is used for acquiring a target voltage of single-phase alternating current commercial power; the current collection module 13 is used for collecting the target current of the single-phase alternating current commercial power; the battery management device parameter acquisition module 14 is configured to acquire battery parameters of the battery management device 11, where the battery parameters include at least one of a charging voltage, a charging current, a charging temperature, a discharging voltage, a discharging current, and a discharging temperature of the battery; the temperature and humidity sensor 15 is used for acquiring temperature and humidity values of the cabinet, wherein the temperature and humidity values comprise temperature values and/or humidity values; the battery temperature sensor 16 is used for acquiring a temperature value of the battery pack; the cabinet door opening state detection module 17 is used for detecting the door opening state of the cabinet and generating door opening state information; the cabinet door opening time detection module 18 is used for detecting the door opening time of the cabinet; the processor 19 is configured to receive and process at least one of a target voltage, a current, a battery parameter, a temperature and humidity value, a temperature value of the battery pack, door opening state information, and door opening time of the single-phase ac utility power, and generate and upload a target parameter to the target server 30. The processor 19 may be a PIC18F25 series single chip microcomputer. The parameter collecting device 10 collects various parameters, can comprehensively reflect the state of the energy storage battery, ensures that the energy storage battery is in a safe and stable environment, and provides a stable and reliable power grid power distribution energy storage battery monitoring system 100.
As an example, please refer to fig. 2 continuously, each PDU acquisition end corresponds to one voltage acquisition module 12, and a plurality of the current acquisition modules 13, the cabinet opening state detection module 17, the cabinet opening time detection module 18, the temperature and humidity sensor 15, and the battery management device parameter acquisition module 14, and the PDU acquisition end packs the parameters acquired in real time, sends the parameters to the IEC61850 module through TTL interfaces (TX and RX), and uploads the parameters to the target server 30 through the IEC61850 module.
As shown in fig. 3, in some embodiments, the voltage collecting module 12 includes an ac transformer 121 and a first differential operational amplifier circuit 123. The ac transformer 121 is used to collect an initial voltage of the single-phase ac commercial power; the first differential operational amplification circuit 123 is configured to: the first input end is connected to the output end of the ac transformer 121, the second input end is connected to the first preset reference voltage 122, and the output end is connected to the analog signal acquisition end of the processor 19, so as to amplify the initial voltage, generate and transmit the target voltage to the processor 19. The reference voltage may be a 1.24V dc voltage. Through the first differential operational amplifier circuit 123, the voltage acquisition module 12 can accurately acquire the real-time variation of the battery voltage, which is convenient for monitoring the battery.
As shown in fig. 4, in some embodiments, the current collecting module 13 includes a current transformer 131 and a second differential operational amplifier circuit 133. The current transformer 131 is used for collecting the initial current of the single-phase alternating-current commercial power; the second differential operational amplification circuit 133 is configured to: the first input end is connected to the output end of the current transformer 131, the second input end is connected to the second preset reference voltage 132, and the output end is connected to the analog signal acquisition end of the processor 19, so as to amplify the initial current, generate and transmit the target current to the processor 19. Through the second differential operational amplifier circuit 133, the current collecting module 13 can accurately collect the real-time variation of the battery current, which is convenient for monitoring the battery.
In some embodiments, the abnormality warning information includes at least one of overvoltage warning information, undervoltage warning information, cabinet high-temperature warning information, cabinet humidity warning information, and cabinet door opening abnormality warning information; the fault prompt information comprises power failure fault prompt information; the protection control module 20 is configured to perform at least one of the following steps: if the target voltage is greater than or equal to 250V or the target current is greater than or equal to 5A, generating overvoltage early warning information; and if the target voltage is less than or equal to 50V or the target current is less than or equal to 5mA, generating undervoltage early warning information or power failure fault prompting information, and avoiding the burning of a power supply system caused by abnormal commercial voltage and current. If the temperature value is greater than or equal to a preset cabinet temperature threshold value, generating cabinet high-temperature early warning information; if the humidity value is larger than or equal to the preset cabinet humidity threshold value, cabinet humidity early warning information is generated, it is ensured that system equipment works in a normal temperature and humidity environment, and the temperature and humidity threshold value can be set according to the equipment installation position. If the door opening time is larger than the preset door opening time threshold, generating abnormal early warning information of the door opening of the cabinet, and avoiding that the cabinet door is forgotten to be closed, so that the equipment cabinet is in a door opening state and the protection of related equipment in the cabinet is lost.
In some embodiments, the abnormality warning information includes battery overcharge warning information and/or battery overdischarge warning information; the protection control module 20 is configured to perform at least one of the following steps: if the charging voltage of the battery pack is greater than or equal to 3.65V, generating corresponding battery pack overcharge early warning information; and if the discharge voltage of the battery pack is less than or equal to 2.0V, generating corresponding battery pack overdischarge early warning information. Avoid causing harmful effects to the group battery, improve the life and the security of group battery.
In some embodiments, the abnormality warning information includes at least one of energy storage battery overcharge warning information, energy storage battery overdischarge warning information, energy storage battery charging high temperature warning information, and energy storage battery charging low temperature warning information; the protection control module 20 is configured to perform at least one of the following steps: if the charging voltage of the energy storage battery is greater than or equal to 28V or the charging current/discharging current is greater than 5A, generating corresponding over-charging early warning information of the energy storage battery, and avoiding the energy storage battery from being burnt by excessive voltage or current; if the discharge voltage of the energy storage battery is less than or equal to 20V, generating corresponding energy storage battery overdischarge early warning information to avoid the energy storage battery from being burnt out due to voltage overdischarge; if the charging temperature of the energy storage battery is greater than or equal to 55 ℃, generating corresponding energy storage battery charging high-temperature early warning information, and avoiding the ignition and combustion accidents caused by overhigh temperature of the energy storage battery in the charging process; and if the charging temperature of the energy storage battery is less than or equal to minus 20 ℃, generating corresponding energy storage battery charging low-temperature early warning information, and avoiding irreversible influence on the service life of the battery due to internal resistance reduction and lithium condensation formed on a cathode caused by electrolyte coagulation in the energy storage battery at low temperature.
As shown in fig. 5, in some embodiments, target server 30 includes a database server 31 and a monitoring server 32. The database server 31 is connected with the parameter acquisition device 10 and the protection control module 20 and is used for storing target parameters and uploading abnormal early warning information and fault prompt information; the monitoring server 32 is connected to the database server 31, and is configured to prompt a supervisor according to the abnormality early warning information and the fault prompting information. Compared with the supervision of traditional field personnel, the method and the system only need background monitoring, greatly reduce the operating cost of the system, save manpower, material resources and financial resources and realize intelligent digital interaction.
As an example, a web server is provided in the target server 30, an IP site is established in the web server, the monitoring server 32 transmits data to the IP site through IEC61850TCP/IP protocol, and a user can query information such as related real-time data or historical data only by logging in remotely. The database server 31 can collect and analyze data information transmitted by the monitoring server 32, the database server 31 is provided with a historical data query mechanism, and a user can independently query at least one of power grid power distribution related information, battery information, charging and discharging information, user control information and abnormity early warning information through the monitoring platform, so that the working state of the whole life cycle of the battery and the working state of a power grid power distribution system can be conveniently known, and a basis is provided for power grid industry analysis and research. PDU gathers the end and gathers unusual early warning information in real time, uploads monitoring server 32 through IEC61850 module, and monitoring server 32 makes corresponding warning.
In some embodiments, the monitoring server 32 is further configured to obtain a prompt duration for the anomaly warning information; and if the prompt duration exceeds a preset prompt time threshold, generating a corresponding protection control signal, wherein the protection control signal is used for controlling the corresponding target object to stop working, and avoiding the damage to the equipment caused by the failure alarm of the system.
As shown in fig. 6, in some embodiments, the grid distribution energy storage battery monitoring system 100 further includes a display 40, and the display 40 is connected to the database server 31 via the monitoring server 32; the monitoring server 32 is further configured to generate a corresponding data report according to the obtained data index, and display the data report via the display 40. The display 40 may visually display data information collected and analyzed by the monitoring server 32 by the database server 31, including at least one of a histogram, a curve, a list, and the like. The data are displayed in real time through the display 40, so that monitoring personnel can monitor the field situation visually and remotely, an accurate result can be obtained without depending on the experience of the monitoring personnel, accidents are prevented, the monitoring personnel can read accurate data regularly, and the monitoring on the safety of the battery is improved.
As shown in fig. 7, as an example, the specific operation flow of the present application is that after the system is initialized, AC current collection is started, if the AC voltage and current are abnormal, the AC indicator is turned off, the protection control module 20 starts to operate, if the AC voltage and current are normal, the AC indicator is turned on, DC input voltage and current collection is continued, then whether a battery is connected is checked, if the battery is not connected, the battery charging indicator is turned off, the protection control module 20 starts to operate, if the battery is connected, the battery charging indicator is turned on, DC output voltage and current collection is continued, whether a DC is output is determined, if the DC is not output, the DC output indicator is turned off, the protection control module 20 starts to operate, if the DC output indicator is turned on, parameter analysis and collection of the battery management device 11 is continued, cabinet ambient temperature collection is performed, an access control on-off state is performed, time collection is performed, data parameter arrangement and packing is performed, and the data is sent to IEC61850, and a new round of cycle is started.
The power grid power distribution energy storage battery monitoring system 100 provided by the application can be suitable for energy storage batteries such as iron lithium batteries, manganese lithium batteries and ternary material lithium batteries.
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express several embodiments of the present disclosure, and the description thereof is specific and detailed, but not construed as limiting the scope of the claims. It should be noted that various changes and modifications can be made by one skilled in the art without departing from the spirit of the disclosure, and these changes and modifications are all within the scope of the disclosure. Therefore, the protection scope of the present disclosure should be subject to the appended claims.
Claims (10)
1. The utility model provides a power grid distribution energy storage battery monitored control system which characterized in that, energy storage battery includes a plurality of electrically connected's group battery, monitored control system includes:
a target server;
the parameter acquisition device is connected with the target server and is used for acquiring and uploading target parameters to the target server, the target parameters comprise at least one of power distribution related parameters of the power grid, cabinet related parameters and battery related parameters, and the cabinet related parameters comprise environmental parameters and/or switch state parameters;
the protection control module is connected with the parameter acquisition device and the target server and is used for generating and providing corresponding protection control signals, abnormal early warning information and fault prompt information to the target server according to at least part of the target parameters; the protection control signal is used for controlling the corresponding action execution device to execute the corresponding protection action.
2. The grid distribution energy storage battery monitoring system of claim 1, wherein the environmental parameter comprises a temperature and humidity value; the switch state parameters comprise door opening state information; the parameter acquisition device comprises a processor, battery management equipment connected with the processor and at least one of the following elements:
the voltage acquisition module is used for acquiring the target voltage of the single-phase alternating current commercial power;
the current acquisition module is used for acquiring the target current of the single-phase alternating current commercial power;
the battery management equipment parameter acquisition module is used for acquiring battery parameters of the battery management equipment, wherein the battery parameters comprise at least one of charging voltage, charging current, charging temperature, discharging voltage, discharging current and discharging temperature of a battery;
the temperature and humidity sensor is used for acquiring temperature and humidity values of the cabinet, and the temperature and humidity values comprise temperature values and/or humidity values;
the battery temperature sensor is used for acquiring the temperature value of the battery pack;
the equipment cabinet door opening state detection module is used for detecting the door opening state of the equipment cabinet and generating the door opening state information;
the equipment cabinet door opening time detection module is used for detecting the door opening time of the equipment cabinet;
the processor is used for receiving and processing at least one of target voltage, current, battery parameters, temperature and humidity values, temperature values of the battery pack, door opening state information and door opening time of the single-phase alternating-current commercial power, generating and uploading the target parameters to the target server.
3. The grid power distribution energy storage battery monitoring system of claim 2, the voltage acquisition module comprising:
the alternating current transformer is used for acquiring the initial voltage of the single-phase alternating current commercial power;
a first differential operational amplification circuit configured to: the first input end is connected with the output end of the alternating current transformer, the second input end is connected with a first preset reference voltage, and the output end is connected with the analog signal acquisition end of the processor and used for amplifying the initial voltage and generating and transmitting the target voltage to the processor.
4. The grid power distribution energy storage battery monitoring system of claim 2, the current collection module comprising:
the current transformer is used for collecting the initial current of the single-phase alternating current commercial power;
a second differential operational amplification circuit configured to: the first input end is connected with the output end of the current transformer, the second input end is connected with a second preset reference voltage, and the output end is connected with the analog signal acquisition end of the processor and used for amplifying the initial current, generating and transmitting the target current to the processor.
5. The power distribution and energy storage battery monitoring system of a power grid according to any one of claims 2-4, wherein the anomaly early warning information comprises at least one of overvoltage early warning information, undervoltage early warning information, cabinet high temperature early warning information, cabinet humidity early warning information, and cabinet door opening anomaly early warning information; the fault prompt information comprises power failure fault prompt information; the protection control module is configured to perform at least one of the following steps:
if the target voltage is greater than or equal to 250V or the target current is greater than or equal to 5A, generating the overvoltage early warning information;
if the target voltage is less than or equal to 50V or the target current is less than or equal to 5mA, generating undervoltage early warning information or power failure fault prompt information;
if the temperature value is greater than or equal to a preset cabinet temperature threshold value, generating cabinet high-temperature early warning information;
if the humidity value is larger than or equal to a preset cabinet humidity threshold value, generating cabinet humidity early warning information;
and if the door opening time is greater than a preset door opening time threshold, generating early warning information of abnormal door opening of the cabinet.
6. The grid power distribution energy storage battery monitoring system according to any one of claims 2-4, wherein the abnormality warning information comprises battery pack overcharge warning information and/or battery pack overdischarge warning information; the protection control module is configured to perform at least one of the following steps:
if the charging voltage of the battery pack is greater than or equal to 3.65V, generating corresponding battery pack overcharge early warning information;
and if the discharge voltage of the battery pack is less than or equal to 2.0V, generating corresponding battery pack overdischarge early warning information.
7. The power grid power distribution energy storage battery monitoring system according to any one of claims 2 to 4, wherein the abnormality warning information comprises at least one of energy storage battery overcharge warning information, energy storage battery overdischarge warning information, energy storage battery charging high temperature warning information and energy storage battery charging low temperature warning information; the protection control module is configured to perform at least one of the following steps:
if the charging voltage of the energy storage battery is greater than or equal to 28V or the charging current/the discharging current is greater than 5A, generating corresponding energy storage battery overcharge early warning information;
if the discharge voltage of the energy storage battery is less than or equal to 20V, generating corresponding energy storage battery overdischarge early warning information;
if the charging temperature of the energy storage battery is greater than or equal to 55 ℃, generating corresponding energy storage battery charging high-temperature early warning information;
and if the charging temperature of the energy storage battery is less than or equal to minus 20 ℃, generating corresponding energy storage battery charging low-temperature early warning information.
8. The grid power distribution energy storage battery monitoring system of any of claims 1-4, the target server comprising:
the database server is connected with the parameter acquisition device and the protection control module and is used for storing the target parameters and uploading the abnormal early warning information and the fault prompt information;
and the monitoring server is connected with the database server and used for prompting a supervisor according to the abnormal early warning information and the fault prompt information.
9. The grid distribution energy storage battery monitoring system of claim 8, the monitoring server further configured to:
acquiring prompt duration of the abnormal early warning information;
and if the prompt duration exceeds a preset prompt time threshold, generating a corresponding protection control signal, wherein the protection control signal is used for controlling the corresponding target object to stop working.
10. The grid distribution energy storage battery monitoring system of claim 8, further comprising:
the display is connected with the database server through the monitoring server;
and the monitoring server is also used for generating a corresponding data report according to the acquired data index and displaying the data report through the display.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211107624.4A CN115421063A (en) | 2022-09-13 | 2022-09-13 | Power distribution energy storage battery monitoring system of power grid |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211107624.4A CN115421063A (en) | 2022-09-13 | 2022-09-13 | Power distribution energy storage battery monitoring system of power grid |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115421063A true CN115421063A (en) | 2022-12-02 |
Family
ID=84202580
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211107624.4A Pending CN115421063A (en) | 2022-09-13 | 2022-09-13 | Power distribution energy storage battery monitoring system of power grid |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115421063A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116609685A (en) * | 2023-03-02 | 2023-08-18 | 北京双登慧峰聚能科技有限公司 | Monitoring method and system applied to liquid cooling energy storage system |
| CN116879794A (en) * | 2023-09-06 | 2023-10-13 | 速源芯(东莞)能源科技有限公司 | Energy storage power failure detection early warning system |
| CN117691217A (en) * | 2023-12-13 | 2024-03-12 | 连云港庚德电子系统科技有限公司 | Digital control BMS management emergency system and method |
-
2022
- 2022-09-13 CN CN202211107624.4A patent/CN115421063A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116609685A (en) * | 2023-03-02 | 2023-08-18 | 北京双登慧峰聚能科技有限公司 | Monitoring method and system applied to liquid cooling energy storage system |
| CN116879794A (en) * | 2023-09-06 | 2023-10-13 | 速源芯(东莞)能源科技有限公司 | Energy storage power failure detection early warning system |
| CN116879794B (en) * | 2023-09-06 | 2023-11-14 | 速源芯(东莞)能源科技有限公司 | Energy storage power failure detection early warning system |
| CN117691217A (en) * | 2023-12-13 | 2024-03-12 | 连云港庚德电子系统科技有限公司 | Digital control BMS management emergency system and method |
| CN117691217B (en) * | 2023-12-13 | 2024-05-07 | 连云港庚德电子系统科技有限公司 | Digital control BMS management emergency system and method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN115421063A (en) | Power distribution energy storage battery monitoring system of power grid | |
| CN105629172B (en) | A kind of method and device of mixing accumulator fault detection | |
| CN104333059A (en) | Intelligent maintenance system and method for communication base station standby power supply | |
| CN108490358B (en) | Battery remote monitoring system and method | |
| CN202453481U (en) | On-line monitoring system for storage battery capacity | |
| CN202940306U (en) | Intelligent storage battery on-line monitoring and maintaining system based on 3G network | |
| CN111722124A (en) | Storage battery online state monitoring system and monitoring method | |
| CN204030640U (en) | Batteries novel maintenance monitoring intelligent device | |
| CN111555449A (en) | Wisdom safety power consumption monitoring system | |
| CN211426740U (en) | Power module state self-diagnosis device of distribution network automation terminal | |
| CN217467117U (en) | Battery detection device and battery detection system | |
| CN204928219U (en) | Lead acid battery system and intelligent system | |
| CN111509319A (en) | PHM management system for energy storage power supply | |
| CN113381085B (en) | Intelligent security system of energy storage device | |
| CN210466092U (en) | Wisdom energy data collection station | |
| CN112068006A (en) | Laboratory equipment safe operation and maintenance platform based on cloud computing | |
| CN219533352U (en) | Energy storage battery test system | |
| CN110729744A (en) | Container energy storage system based on acoustic vector sensor | |
| CN212905327U (en) | Online state monitoring system for storage battery | |
| CN110244596A (en) | A kind of energy bag data intelligent acquisition analysis method | |
| CN115808634A (en) | Method, device, equipment and medium for estimating safety state of lithium battery of energy storage power station | |
| CN115133162A (en) | Remote diagnosis device and method for nuclear capacity state of storage battery | |
| CN113839449A (en) | Safety control method and control system for energy storage system | |
| CN220252126U (en) | Online maintenance system for storage battery | |
| CN111049225A (en) | Lithium iron phosphate battery pack device suitable for railway repeater |
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 |