A battery monitoring method and system for a control center

Abstract

The application discloses a kind of battery monitoring method and system of control station, it is related to battery monitoring technical field, it includes obtaining battery real-time measurement data and its threshold parameter, battery account information;According to battery real-time measurement data, identify battery charge-discharge state;According to battery charge-discharge state, battery real-time measurement data is adaptively stored to obtain battery historical measurement data;Battery real-time measurement data and battery historical measurement data and threshold parameter are compared to generate alarm information.The application effectively reduces data storage while ensuring data sampling accuracy, improves data research and judgment intuitiveness through graphical display, significantly reduces manual detection error and data research and judgment workload by relying on intelligent early warning and operation strategy pushing, significantly improves the intelligentization and efficiency of control station battery operation.

Description

Technical Field

[0001] This invention relates to a method and system for monitoring batteries in a centralized control station, belonging to the field of battery monitoring technology. Background Technology

[0002] With the continuous expansion of power system scale and the improvement of automation level, centralized control stations, as important hubs in power grid operation, need to centrally monitor and manage the battery systems of the substations under their jurisdiction. As a crucial component of the substation's DC system, the operating status of batteries directly affects the safe and stable operation of the power grid. Traditional battery monitoring methods mainly rely on regular manual inspections and simple data collection, which are insufficient to meet the demands of modern power grids for refined management of battery systems.

[0003] However, existing centralized control station battery monitoring technologies still have the following shortcomings: First, the data storage method is singular, and it cannot adaptively adjust the storage strategy according to the battery's operating status. This results in a large amount of redundant data during float charging, while critical states such as equalization charging or discharging may miss important information due to insufficient sampling accuracy. Second, there is a lack of intuitive graphical data display functions, making it difficult for maintenance personnel to quickly and accurately assess the overall operating status and abnormal conditions of the battery. Third, existing systems rely heavily on manual inspection and data analysis, which not only has significant errors but also involves a heavy workload in data analysis, affecting maintenance efficiency. Finally, there is a lack of intelligent early warning mechanisms and maintenance strategy push functions, making it impossible to automatically match corresponding maintenance strategies based on the actual operating conditions of the battery, thus affecting the efficiency and accuracy of battery maintenance. Summary of the Invention

[0004] The purpose of this invention is to overcome the shortcomings of the prior art and provide a method and system for monitoring batteries in a centralized control station. While ensuring the accuracy of data sampling, it effectively reduces the amount of data storage, improves the intuitiveness of data analysis through graphical display, and significantly reduces the error of manual detection and the workload of data analysis by relying on intelligent early warning and operation and maintenance strategy push, thereby significantly improving the intelligence and efficiency of battery operation and maintenance in the centralized control station.

[0005] To achieve the above objectives, the present invention is implemented using the following technical solution: On one hand, the present invention provides a method for monitoring the battery of a centralized control station, comprising: Obtain real-time measurement data and threshold parameters of the battery, as well as battery ledger information; Identify the battery's charging and discharging status based on real-time battery measurement data; Historical battery measurement data is obtained by adaptively storing real-time battery measurement data based on the battery's charging and discharging status. The system compares real-time battery measurement data with historical battery measurement data and threshold parameters to generate alarm information.

[0006] Furthermore, the real-time measurement data of the battery includes the substation ambient temperature, the voltage and current of the battery pack, and the voltage, current, and internal resistance of a single battery.

[0007] Furthermore, the substation includes multiple battery banks, each consisting of multiple individual batteries.

[0008] Furthermore, the battery ledger information includes the battery manufacturer, model, rated capacity, rated voltage, production date, and commissioning time.

[0009] Furthermore, the step of identifying the battery charging and discharging state based on battery measurement data includes: The current value corresponding to a stable battery voltage is used as the reference current value; When the battery voltage continues to rise and the current value is greater than the reference current value, the battery charging and discharging state is identified as the battery being in the equalization charging state. When the battery voltage continues to drop and the current value is greater than the reference current value, the battery charging and discharging status is identified as the battery being in a discharging state. In all other cases, the battery charging and discharging status is identified as the battery being in a float charging state.

[0010] Furthermore, the adaptive storage includes: When the battery is in float charging mode, the real-time measurement data of the battery status is stored at long time intervals. When the battery is in equalization charging or discharging state, the real-time measurement data of the battery status is stored at short time intervals.

[0011] Furthermore, it also includes generating a matching maintenance plan based on the alarm information, and generating and sending an SMS message to the outside based on the alarm information and the matching maintenance plan.

[0012] On the other hand, the present invention also provides a centralized control station battery monitoring system for implementing the centralized control station battery monitoring method as described in any of the above claims, which includes a centralized control platform, a battery measurement data dynamic storage module, and a monitoring and early warning service module. The centralized control platform is used to acquire real-time battery measurement data and its threshold parameters, battery ledger information, and transmit the real-time battery measurement data to the battery measurement data dynamic storage module. The battery measurement data dynamic storage module is used to identify the battery charging and discharging status based on the real-time battery status measurement data, and adaptively store the real-time battery measurement data according to the battery charging and discharging status to obtain historical battery measurement data, and then transmit the historical battery measurement data back to the centralized control platform. The monitoring and early warning service module is used to receive real-time and historical battery measurement data from the centralized control platform, and compare the real-time and historical battery measurement data with threshold parameters to generate alarm information.

[0013] Compared with the prior art, the beneficial effects achieved by the present invention are as follows: This invention, through an adaptive data storage strategy, effectively reduces data storage volume and improves storage efficiency while ensuring data sampling accuracy; it facilitates maintenance personnel to quickly grasp the battery operating status and enhances the intuitiveness of data analysis; it significantly reduces manual inspection errors and data analysis workload, thereby reducing labor costs; and it significantly improves the intelligence level and efficiency of battery operation and maintenance in centralized control stations, ensuring the stable operation of the power system. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of the central control station battery monitoring system in one embodiment of the present invention; Figure 2 This is a schematic diagram of the battery measurement relationship in the centralized control station battery monitoring method in one embodiment of the present invention; Figure 3 This is a schematic diagram of the dynamic storage process in the battery monitoring method of the central control station in one embodiment of the present invention. Detailed Implementation

[0015] The present invention will be further described below with reference to the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present invention, and should not be used to limit the scope of protection of the present invention. Example 1

[0016] like Figure 1 As shown, this embodiment of the invention provides a battery monitoring method for a centralized control station, enabling comprehensive and intelligent monitoring of substation batteries, which includes the following steps: Obtain real-time measurement data of the battery and its threshold parameters, as well as battery ledger information.

[0017] In this embodiment, the real-time battery measurement data includes the substation ambient temperature, the voltage and current of the battery pack, and the voltage, current, and internal resistance of individual batteries. The battery measurement parameter relationship model is as follows: Figure 2 As shown, in this embodiment, the substation includes several battery banks, each consisting of several individual batteries. Battery ledger information includes battery model, capacity, installation location, and commissioning time. Alarm upper and lower limit thresholds for key parameters such as voltage, current, and temperature are set according to the technical specifications and operating requirements of different battery models.

[0018] Based on real-time battery measurement data, the battery's charge and discharge status is identified. The current value corresponding to a stable battery voltage is used as the reference current value.

[0019] When the battery voltage continues to rise and the current value is greater than the reference current value, the battery charging and discharging state is identified as the battery being in the equalization charging state.

[0020] When the battery voltage continues to drop and the current value is greater than the reference current value, the battery charging and discharging status is identified as the battery being in a discharging state.

[0021] In all other cases, the battery charging and discharging status is identified as the battery being in a float charging state.

[0022] The data acquisition and storage strategy is automatically adjusted according to the battery charging and discharging status. In this embodiment, when the battery is in a float charging state, the real-time measurement data of the battery is stored at long time intervals.

[0023] When the battery is in the equalization charging or discharging state, the real-time measurement data of the battery is stored at short time intervals.

[0024] Real-time battery measurement data is adaptively stored and used as historical battery measurement data.

[0025] The real-time measurement data and historical measurement data of the battery are compared with threshold parameters to obtain the comparison result. An alarm message is generated based on the comparison result. In this embodiment, the alarm message includes the battery's health status and performance degradation degree, as well as the battery's overall status score. The alarm message is sent to the alarm window for display via a message bus, as detailed below: The system monitors the voltage, current, and internal resistance of individual batteries in real time. When the voltage of any battery drops below 2.0V, it immediately sends a low battery voltage alarm to the central control system's alarm window. The alarm message includes the specific battery pack and individual battery, reminding users to charge the battery pack as soon as possible.

[0026] The system monitors the ambient temperature of the battery in real time. When the temperature exceeds the range of 15~30℃ and this condition persists for a period of time, an alarm signal is sent to the system alarm window to remind operators to pay attention to the ambient temperature of the battery.

[0027] Within the same battery pack, the deviation of the internal resistance of a single battery from the average value shall not exceed ±10%. If the number of substandard batteries exceeds 5% of the total number of batteries in the pack, an alarm will be triggered in the system alarm window.

[0028] Within the same battery pack, the difference between the highest and lowest open-circuit terminal voltage of the battery should not exceed 0.03V (for a battery nominally rated at 2V), and an alarm should be triggered in the system alarm window. Note: The open-circuit voltage of a battery refers to the potential difference between the positive and negative terminals of the battery when no load is connected (i.e., the circuit is in an open circuit state).

[0029] During daily float charging or charging, the battery's real-time data is assessed, and an alarm is issued for "abnormal battery float charging / charge-discharge test voltage" when the voltage exceeds the normal range.

[0030] Simultaneously, alarm information is automatically converted into alarm SMS messages containing key information such as battery location, anomaly type, and severity, and sent to designated maintenance personnel to ensure rapid response to anomalies. Designated maintenance personnel can match the corresponding maintenance personnel group based on a pre-configured dataset of maintenance personnel information and by identifying the maintenance responsibility area identifier in the alarm information.

[0031] In this embodiment, based on factors such as the type and severity of alarm information and the battery's historical maintenance records, appropriate maintenance strategies and handling suggestions are automatically matched. This provides maintenance personnel with targeted maintenance guidance, including detailed information such as key inspection points, handling steps, and precautions, improving the professionalism and efficiency of maintenance work.

[0032] The monitoring method in this embodiment achieves fully automated management of the entire battery monitoring process through a systematic procedure. It forms a complete monitoring closed loop from data collection, status analysis, anomaly alarms to operation and maintenance push notifications, which significantly improves the intelligence level and work efficiency of battery operation and maintenance management. Example 2

[0033] Based on Embodiment 1, this embodiment also provides a centralized control station battery monitoring system, including a centralized control platform, a battery measurement data dynamic storage module, and a monitoring and early warning service module.

[0034] The centralized control platform serves as the core data foundation of the system, used to acquire real-time measurement data of battery status and its threshold parameters, as well as battery ledger information. Real-time battery measurement data includes dynamic operating parameters such as voltage, current, and temperature; in this embodiment, this includes the substation ambient temperature, battery bank voltage and current, and individual battery voltage, current, and internal resistance. Battery ledger information includes basic information for each battery, including static information such as model, capacity, installation location, and commissioning time. Threshold parameters include upper and lower thresholds for various monitoring indicators. The centralized control platform provides a unified data storage and access interface for the entire monitoring system, ensuring that each functional module can accurately obtain the required battery information.

[0035] In this embodiment, a configuration tool is also provided to offer system administrators flexible parameter configuration functions, primarily for configuring threshold parameters. Administrators can set corresponding upper and lower limits for alarm parameters such as voltage, current, and temperature based on the technical specifications and operating requirements of different battery models, ensuring the accuracy and usability of the alarm function.

[0036] The battery measurement data dynamic storage module is responsible for the intelligent storage and management of battery monitoring data. It has adaptive data storage capabilities and can identify the battery's operating status based on real-time monitoring data. Specifically: The current value corresponding to a stable battery voltage is used as the reference current value.

[0037] When the battery voltage continues to rise and the current value is greater than the reference current value, the battery charging and discharging state is identified as the battery being in the equalization charging state.

[0038] When the battery voltage continues to drop and the current value is greater than the reference current value, the battery charging and discharging status is identified as the battery being in a discharging state.

[0039] In all other cases, the battery charging and discharging status is identified as the battery being in a float charging state.

[0040] Then, the data storage interval is automatically adjusted according to the battery's charging and discharging state. During float charging, a large-interval storage strategy is used to reduce storage frequency and save storage space; during equalization charging or discharging, a small-interval, high-precision storage mode is switched to ensure complete recording of critical operational data, such as... Figure 3 As shown.

[0041] The monitoring and early warning service module is responsible for the system's monitoring and early warning functions. This module continuously monitors various operating parameters of the battery, and immediately issues an alarm when the real-time or historical battery measurement data exceeds threshold parameters. Simultaneously, the module has performance degradation early warning capabilities, identifying potential battery performance decline risks and issuing warnings by analyzing the changing trends of historical battery operating data. The module can also calculate the status of individual battery cells and assess the health of each battery. Alarm information is sent to the alarm window for display via the message bus, while battery status information is written to the centralized control platform for storage, ensuring timely transmission of alarm information and accurate recording of status data.

[0042] This embodiment also includes a graphical display module, a decision support module, and an SMS sending module.

[0043] The graphical user interface provides users with an intuitive view of battery status, comprising three levels: an overview interface, a details interface, and a chart interface. The overview interface uses a display panel to show the status of all batteries under the central control station, categorized by substation. Abnormal batteries are marked in red, facilitating quick identification of problematic equipment by maintenance personnel. Clicking the substation icon in the overview interface will take users to the corresponding details interface. The details interface displays detailed ledger information, real-time measurement data, historical measurement data, and alarm information for the batteries under the selected substation, providing maintenance personnel with a comprehensive view of the specific battery's operational status. The chart interface uses various chart formats, including line graphs and bar charts, to display historical and real-time battery data. It supports horizontal comparison of data from different batteries within the same time period, as well as vertical analysis of data from the same battery over different time periods, helping users identify trends in battery performance.

[0044] The decision support module and SMS delivery module provide intelligent support for operation and maintenance work. Based on the battery's operating status and alarm information, they automatically push matching maintenance strategies, providing targeted maintenance suggestions to maintenance personnel. When a battery abnormality is detected, the module automatically sends an alarm SMS to promptly notify relevant maintenance personnel, ensuring that the problem can be responded to and handled quickly.

[0045] In terms of system deployment architecture, the battery measurement data dynamic storage module, monitoring and early warning service module, and graphical display module are all deployed in Zones I and II of the centralized control platform to ensure the high reliability of core monitoring functions. The decision support module and SMS publishing module are deployed in Zone IV of the centralized control platform to achieve secure isolation and effective transmission of operation and maintenance information.

[0046] This centralized control station battery monitoring system, through the coordinated work of its various modules, achieves comprehensive monitoring, intelligent analysis, and proactive early warning of battery operating status, significantly improving the automation level and efficiency of battery operation and maintenance management, and providing a reliable guarantee for the safe and stable operation of the power system.

[0047] The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. A method for monitoring batteries in a centralized control station, characterized in that, include: Obtain real-time measurement data and threshold parameters of the battery, as well as battery ledger information; Identify the battery's charging and discharging status based on real-time battery measurement data; Historical battery measurement data is obtained by adaptively storing real-time battery measurement data based on the battery's charging and discharging status. The system compares real-time battery measurement data with historical battery measurement data and threshold parameters to generate alarm information.

2. The battery monitoring method for a centralized control station according to claim 1, characterized in that, The real-time measurement data of the battery includes the substation ambient temperature, the voltage and current of the battery pack, and the voltage, current, and internal resistance of a single battery.

3. The battery monitoring method for a centralized control station according to claim 2, characterized in that, The substation includes multiple battery banks, each consisting of multiple individual batteries.

4. The battery monitoring method for a centralized control station according to claim 1, characterized in that, The battery ledger information includes the battery manufacturer, model, rated capacity, rated voltage, production date, and commissioning time.

5. The battery monitoring method for a centralized control station according to claim 1, characterized in that, The step of identifying the battery charging and discharging state based on battery measurement data includes: The current value corresponding to a stable battery voltage is used as the reference current value; When the battery voltage continues to rise and the current value is greater than the reference current value, the battery charging and discharging state is identified as the battery being in the equalization charging state. When the battery voltage continues to drop and the current value is greater than the reference current value, the battery charging and discharging status is identified as the battery being in a discharging state. In all other cases, the battery charging and discharging status is identified as the battery being in a float charging state.

6. The battery monitoring method for a centralized control station according to claim 1, characterized in that, The adaptive storage includes: When the battery is in float charging mode, the real-time measurement data of the battery status is stored at long time intervals. When the battery is in equalization charging or discharging state, the real-time measurement data of the battery status is stored at short time intervals.

7. The battery monitoring method for a centralized control station according to claim 1, characterized in that, It also includes generating a matching maintenance plan based on alarm information, and generating and sending an SMS message to the outside based on the alarm information and the matching maintenance plan.

8. A centralized control station battery monitoring system, characterized in that, The method for implementing the battery monitoring method of the centralized control station as described in any one of claims 1 to 7 includes a centralized control platform, a dynamic storage module for battery measurement data, and a monitoring and early warning service module. The centralized control platform is used to acquire real-time battery measurement data and its threshold parameters, battery ledger information, and transmit the real-time battery measurement data to the battery measurement data dynamic storage module. The battery measurement data dynamic storage module is used to identify the battery charging and discharging status based on the real-time battery status measurement data, and adaptively store the real-time battery measurement data according to the battery charging and discharging status to obtain historical battery measurement data, and then transmit the historical battery measurement data back to the centralized control platform. The monitoring and early warning service module is used to receive real-time and historical battery measurement data from the centralized control platform, and compare the real-time and historical battery measurement data with threshold parameters to generate alarm information.

9. The centralized control station battery monitoring system according to claim 8, characterized in that, It also includes a graphical display module, a decision support module, and an SMS sending module. The graphical display module is used to graphically display real-time and historical battery measurement data. The decision support module is used to generate a matching maintenance plan based on alarm information. The SMS sending module is used to generate and send an SMS message based on alarm information and the matching maintenance plan to an external device.

10. The centralized control station battery monitoring system according to claim 9, characterized in that, The dynamic storage module, monitoring and early warning service module, and graphic display module are deployed in Zones I and II of the centralized control platform, while the auxiliary decision-making module and SMS publishing module are deployed in Zone IV of the centralized control platform.

Images