Automatic switch terminal operation state on-line detection and automatic repair method

Abstract

The invention relates to the technical field of power equipment detection and repair, in particular to a method capable of detecting the running state of an automatic switch terminal on line and automatically repairing the automatic switch terminal, and the method comprises the steps: setting a fault judgment threshold range and a battery safety threshold range; reading data and judging whether the data is in a fault threshold range or not: if so, judging that a fault does not occur, detecting the voltage and temperature of the battery and judging whether the voltage and temperature of the battery are in safety thresholds or not, if not, executing equalization operation and re-judging, and if so, updating the state; if the fault is not within the fault threshold value, performing refined fault searching, recording parameters and analyzing whether the parameters can be automatically repaired, if the parameters can be repaired, automatically repairing and updating the state database, and if the parameters cannot be repaired, reporting to the background. And finally, detecting the state database to judge whether a fault which cannot be automatically repaired exists, if so, sending a manual intervention request, and if not, judging the fault again. During automatic repair, if the communication module is in false death, restarting is carried out, if the original super capacitor is damaged, seamless switching is carried out, and the cruising ability and the safety are improved.

Description

Technical Field

[0001] The present invention relates to the technical field of power equipment detection and repair, and particularly to an online detection and automatic repair method for the operating state of an automated switch terminal. Background Art

[0002] In the distribution network operation and maintenance of power grid companies, there are difficulties such as long line lengths to be operated and maintained, large task volumes, and high task difficulties, especially in terms of safety control and violation investigation. However, the feeder terminal is in a long-term continuous working state, increasing the probability of abnormal working conditions. The traditional manual maintenance method has a large workload and low efficiency.

[0003] The existing patent No. CN119125783A discloses a distribution network fault location method based on FTU, including the following steps: collecting electrical signals of the distribution network through FTU to obtain electrical acquisition signals, and performing digital processing on the electrical acquisition signals to obtain electrical parameters; mapping the electrical parameters to a preset electrical parameter-time coordinate system, and drawing curves for the electrical parameters on the electrical parameter-time coordinate system to obtain a visual curve; monitoring whether there are abnormal phenomena in the visual curve on the electrical parameter-time coordinate system. If there are abnormal phenomena in the visual curve, marking the abnormal area corresponding to the abnormal phenomenon to obtain a visual marking curve; obtaining the time of the abnormal point based on the abnormal phenomenon on the visual marking curve, and obtaining the distribution network fault location based on the time of the abnormal point and the propagation speed of the electrical acquisition signal; solving the technical problem of the large workload and low efficiency of the manual maintenance method.

[0004] However, the existing FTU lacks the ability to monitor the health status of the battery in real time and cannot provide a basis for battery replacement. This makes it impossible to take timely measures when the battery performance deteriorates, increasing the safety risk. Summary of the Invention

[0005] The purpose of the present invention is to provide an online detection and automatic repair method for the operating state of an automated switch terminal, solving the problem that the existing FTU lacks the ability to monitor the health status of the battery in real time and cannot provide a basis for battery replacement. This makes it impossible to take timely measures when the battery performance deteriorates, increasing the safety risk.

[0006] To achieve the above object, the present invention provides an online detection and automatic repair method for the operating state of an automated switch terminal, including the following steps:

[0007] Read the battery voltage and temperature of the automated switch terminal, determine whether they are within the battery safety threshold range, and decide whether to implement the equalization operation by judging whether they are within the battery safety threshold range to ensure the stable operation of all battery units;

[0008] Set the fault judgment threshold range, detect the status of the automatic switch terminal, and determine whether the collected data is within the set fault judgment threshold range. If so, perform battery status detection. If not, conduct refined fault search, record relevant parameters, transmit them to the terminal, and determine whether to perform automatic repair.

[0009] Among them, read the battery voltage and temperature of the automatic switch terminal, determine whether they are within the battery safety threshold range, and decide whether to implement the balancing operation based on whether they are within the battery safety threshold range to ensure the stable operation of all battery units. The previous steps include:

[0010] Read the data of the energy storage module, communication module, and terminal operating status information.

[0011] Among them, read the battery voltage and temperature of the automatic switch terminal, determine whether they are within the battery safety threshold range, and decide whether to implement the balancing operation based on whether they are within the battery safety threshold range to ensure the stable operation of all battery units. The specific steps include:

[0012] Read the battery voltage V (battery) and temperature T (battery) ;

[0013] Determine whether the battery voltage and battery temperature are within the battery safety threshold range:

[0014] V (min) < V (battery) < V (max)

[0015] T (min) < T (battery) < T (max)

[0016] If it is not within the battery safety threshold range, perform the balancing operation;

[0017] After the balancing operation is completed, read the battery voltage and temperature of the automatic switch terminal again and determine whether to implement the balancing operation based on whether they are within the battery safety threshold range to ensure the stable operation of all battery units.

[0018] Among them, set the fault judgment threshold range, detect the status of the automatic switch terminal, determine whether the collected data is within the set fault judgment threshold range. If so, perform battery status detection. If not, conduct refined fault search, record relevant parameters, transmit them to the terminal, and determine whether to perform automatic repair:

[0019] Fault judgment includes energy storage module status fault judgment, communication module status fault judgment, and terminal operating status fault judgment.

[0020] Among them, set the fault judgment threshold range, detect the status of the automated switch terminal, and determine whether the collected data is within the set fault judgment threshold range. If so, perform battery status detection; if not, perform refined fault finding, record relevant parameters, and transmit them to the terminal, and determine whether to perform automatic repair. The specific steps include:

[0021] Determine whether the collected data is within the set fault judgment threshold range. If not, analyze the fault information to narrow down the fault range. Among them, if a certain module parameter exceeds the set fault judgment threshold range, mark this module as a faulty module;

[0022] Determine the faulty module and record relevant parameters;

[0023] Generate corresponding module fault signals according to the fault status;

[0024] Transmit the mapping information of each module to the built-in communication module;

[0025] The built-in communication module transmits the fault information to the terminal;

[0026] The terminal judges the fault type.

[0027] Among them, after the terminal judges the fault type and confirms that a fault has occurred, the specific steps include:

[0028] Judge whether the fault type can be automatically repaired. If it can be automatically repaired, perform automatic repair operations according to the situation and report to the background to update the status database. If it cannot be automatically repaired, report to the background to update the status database. Among them, after the terminal judges the fault type, the specific steps include:

[0029] Judge whether the fault type can be automatically repaired. If not, send the fault point location information;

[0030] Generate an exception report;

[0031] Send a request for manual intervention;

[0032] Update the status database;

[0033] Send a request for manual intervention;

[0034] Wait for rescue personnel.

[0035] An online-detectable automatic switch terminal operation status and automatic repair method of the present invention automatically monitors the working condition of the energy storage module of the feeder terminal, has a built-in battery power monitoring function, evaluates the service life of the energy storage module according to real-time monitoring data, and sends early warning information to the background. When the battery power is lower than 20% (the life alarm threshold can be set independently), an alarm is given, and the main station is sent through the original encrypted channel (spare point) of the FTU; during a fault power outage or a planned power outage, when the original supercapacitor has insufficient power or is damaged, it can be seamlessly switched to the FTU backup power supply to replace the original power supply module of the FTU, and the main station is sent through the original encrypted channel (spare point) of the FTU; it realizes automatic monitoring of abnormal working conditions of the feeder terminal, actively discovers abnormal states and specifically locates the module where the abnormal state is located, judges whether the built-in corresponding repair operation can be used according to the located abnormal type, sends event processing information to the background after the repair is completed, and if the repair cannot be completed, sends the location information to the background to notify the operation and maintenance personnel to handle it, minimizing the operation and maintenance time of the feeder terminal, thereby realizing fast power restoration and reducing power outage time; enriches and improves the working state information of the feeder terminal, realizes power status, working abnormal status, communication abnormal status, device fault risk assessment and early warning of the feeder terminal, and all status information is transmitted to the background in real time for the use of operation and maintenance personnel, realizing scientific, reasonable and efficient active operation and maintenance work. The original supercapacitor supporting the FTU has a short battery life, and it is difficult to meet remote control in remote areas; the system implementing this method has a battery life of about 20 hours, solving the problem of short battery life, and the waterproof level of the system is IP67, enabling operation in water immersion, solving the problem of on-site condensation. Finally, it realizes: maintenance-free and high-temperature resistant up to +85°C, ensuring long-term operation stability, and automatic self-recovery and self-healing of abnormal terminal operation and abnormal operation of the encryption communication module. Prevent power outage losses caused by the automatic self-healing function of the distribution network line or the expansion of the power outage fault range, which has a bad impact on society. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art.

[0037] Figure 1 It is a flowchart of the online-detectable automatic switch terminal operation status and automatic repair method of the present invention.

[0038] Figure 2 It is a passive battery equalization circuit diagram of the present invention.

[0039] Figure 3 It is a control circuit diagram of the passive battery equalization circuit of the present invention.

[0040] Figure 4 It is a power supply circuit diagram of the battery equalization module of the present invention.

[0041] Figure 5 It is a step diagram of the method for online detecting the operating state of an automated switch terminal and automatically repairing in the present invention. Specific embodiments

[0042] The embodiments of the present invention will be described in detail below. The examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to explain the present invention and should not be construed as limiting the present invention.

[0043] Please refer to Figures 1 to 5 , in which, Figure 1 is a flowchart of the method for online detecting the operating state of an automated switch terminal and automatically repairing in the present invention. Figure 2 is a battery passive equalization circuit diagram of the present invention. Figure 3 is a control circuit diagram of the battery passive equalization circuit of the present invention. Figure 4 is a power supply circuit diagram of the battery equalization module of the present invention. Figure 5 It is a step diagram of the method for online detecting the operating state of an automated switch terminal and automatically repairing in the present invention.

[0044] Among them, Figure 2 The circuit is a battery passive equalization circuit, which is applied to the battery charge equalization. The main control chip is BQ7693003DBTR, which is used for the management of battery charge and voltage. By controlling the MOSFET in the circuit, it controls whether the dissipative resistor is connected. When the charge of a certain battery is higher than the average value, the loop is turned on to consume the charge of this battery path. Figure 3 The main control chip of the circuit diagram adopts W806, which is used for the main control part of the battery passive equalization circuit. The main control chip controls the state of the MOSFET in the battery passive equalization circuit by controlling the isolation optocoupler (the isolation optocoupler is an electronic component that realizes electrical isolation through optical signal transmission, mainly used to transmit signals between two circuits, while avoiding direct electrical connection between them, thereby protecting the circuit from high voltage, noise or ground loop effects), so as to achieve the effect of passive dissipative equalization of battery charge; differential signal communication is carried out through the RS-485 chip (it has the advantages of long transmission distance and not being easily interfered), and the communication between W806 and the outside world is always maintained; the RTC device is used to make the communication clock frequency of W806 consistent with the outside world, making it easier to maintain communication. Figure 4 The circuit diagram is used when the battery equalization module is powered. The relays in the figure are all used to control the power supply direction of the battery to facilitate power supply to different modules under different conditions.

[0045] The present invention provides a method for online detecting the operating state of an automated switch terminal and automatically repairing, including the following steps:

[0046] S101: First, set the fault judgment threshold range and the battery safety threshold range, and then perform fault judgment. By reading the information data such as the operating status of the energy storage module, communication module, and terminal, determine whether the collected data is within the fault judgment threshold range: If it is within the fault judgment threshold range, preliminarily determine that no fault has occurred and perform battery status detection.

[0047] S102: Read the battery voltage and temperature of the automatic switch terminal, and determine whether they are within the battery safety threshold range. If they are within the battery safety threshold range, update the status database (status); if they are not within the battery safety threshold range, perform an equalization operation to ensure that the output voltages of all battery units are balanced (stable operation);

[0048] Specifically, the electrical parameters of the distribution network are monitored in real time through high-precision sensors, including voltage U(t), current I(t), power P(t), etc. The calculation formula for electric power is: P (t) = U (t) |·I (t) |·cos(φ), where φ is the phase difference between the voltage and the current. For the battery in the energy storage device associated with the automatic switch terminal (FTU), in terms of battery management, the BQ7693003DBTR chip is responsible for monitoring the battery voltage and temperature to ensure that the battery operates within the battery safety threshold range. The STM32F103C8T6 main control chip will perform battery equalization and management according to the following logic judgment process:

[0049] Monitor the battery status:

[0050] Read the battery voltage V (battery) and temperature T (battery) .

[0051] Judge whether the battery voltage and battery temperature are within the battery safety threshold range:

[0052] V (min) < V (battery) < V (max)

[0053] T (min) < T (battery) < T (max)

[0054] Perform equalization operation:

[0055] If the battery voltages are unbalanced, that is, the voltage of a certain battery cell is higher than that of other cells, start the equalization operation. Among them, for the battery cell with a higher voltage, its voltage can be reduced by discharging or reducing the charging current; for the battery cell with a lower voltage, its voltage can be increased by increasing the charging current or paralleling other battery cells.

[0056] After the balancing operation is completed, the battery status is monitored again to ensure that all battery cells are operating stably.

[0057] S103: Set the fault judgment threshold range, and perform a status detection on the automatic switch terminal to determine whether the collected data is within the fault judgment threshold range. If so, update the status database. If not, trigger the refined fault search operation and transmit the fault information to the terminal, and determine whether automatic repair can be performed. If automatic repair can be performed, report it to the background to update the status database. If automatic repair cannot be performed, report it to the background to update the status database.

[0058] Specifically, first set the thresholds for normal operation, such as the normal ranges of voltage and current. Once the monitored parameters exceed these thresholds, it will be determined as a fault.

[0059] Judgment conditions:

[0060] U (min) <U (t) <U (max)

[0061] I (min) <I (t) <I (max)

[0062] When the detection exceeds the set threshold range for normal operation, trigger an alarm and record the time of the fault occurrence and related parameters.

[0063] Among them, the FTU device adopts a modular design, and each module is responsible for a specific function, such as power management, communication, etc. When a fault is detected, the module where the fault occurs will be identified first. The operating status of each module is monitored in real time, and the changes in electrical parameters are recorded. Among them, fault judgment includes reading information data such as the energy storage module, communication module, and terminal operating status. Once the parameters of a certain module exceed the normal range, mark that module as a faulty module. When a false dead state occurs in the communication module or the terminal, such as no response or data transmission interruption, immediately record this state and trigger the self-healing mechanism. By analyzing the faulty module, the scope of the fault can be narrowed down. For example, if a certain module on the main board fails, the voltage, current, and other parameters of this module will be monitored to determine whether the fault is related to this module, thereby limiting the scope of the fault. Analyze the specific parameter changes of the faulty module to judge the nature of the fault, such as short circuit, overload, etc., and determine the affected scope. Judgment conditions: "Fault" if S (f) = 1 "Normal" if S (f) = 0. During the fault screening process, the faulty module is determined and the relevant parameters are recorded. Assume that the status of the faulty module is S (f) , then:

[0064]

[0065] Generate the corresponding module identification bit signal S according to the fault status (signal) To convey the fault information. The generation logic of the signal is as follows:

[0066]

[0067] Send the generated module identification bit signal to the built-in communication module. The logical judgment of this process is as follows:

[0068] Judgment condition:

[0069] If S (signal) is successfully generated, it is sent to the built-in communication module.

[0070] Transmit the mapping information of each module name and its corresponding module identification bit to the built-in communication module internally through the 485 communication protocol. The 485 communication protocol uses differential signal transmission, which can effectively resist electromagnetic interference. The transmission of differential signals can be expressed as:

[0071] V (diff) =V (A) +V (B)

[0072] where V (A) and V (B) are the voltages of the two signal lines respectively.

[0073] The built-in communication module of the FTU is transmitted to the terminal through wireless signals. The terminal judges the type of fault, such as short circuit, overload, etc. according to the change of electrical parameters, and determines the affected range. This helps the operation and maintenance personnel quickly locate the fault and formulate corresponding maintenance plans.

[0074] After detecting a module fault, automatically switch to the standby power supply. Let the main power supply status be S (m) and the standby power supply status be S (b) , then the self-healing condition is:

[0075]

[0076] After detecting the false death state, the FTU device will try to automatically restart the faulty module. By restarting, it can clear the temporary errors that may cause false death and restore normal operation. If the restart fails, automatically isolate the faulty module and send an alarm signal to the master station to prompt the operation and maintenance personnel to conduct further inspections. At the same time, continue to monitor the operation status of other modules to ensure the stability of the overall system.

[0077] After the fault is isolated and switched to the backup power supply, continue to monitor the operation status of the distribution network to ensure power supply stability. The liquid crystal display screen shows information such as battery voltage, power supply time, and temperature in real time, facilitating the operation and maintenance personnel to quickly understand the device status. At the same time, the monitoring data will be uploaded to the cloud platform through the wireless communication module to achieve remote monitoring and management.

[0078] After a module fault occurs, record the detailed information of the fault, including fault type, occurrence time, duration, and recovery time, etc. These data will be used for subsequent fault analysis and system optimization to help the operation and maintenance personnel improve the maintenance strategy and enhance the reliability of the system.

[0079] After a module fault occurs, each fault event and its handling process will be recorded in the system log for subsequent analysis and fault troubleshooting. The operation and maintenance personnel can analyze these data to identify potential fault modes and make targeted improvements. At the same time, the health status of the battery and module of the FTU device will be regularly detected to ensure that measures can be taken in a timely manner when problems occur and reduce the occurrence of module fault phenomena.

[0080] The present invention realizes intelligent monitoring, fault detection, location, and automatic recovery of the distribution network. It not only improves the reliability and automation level of the distribution network, but also significantly reduces the operation and maintenance cost, meeting the requirements of modern distribution networks for efficient and intelligent management. Through the collaborative work of BQ7693003DBTR and STM32F103C8T6, the safety management and balance of the battery are ensured, further enhancing the overall performance of the system.

[0081] The effects of the present invention:

[0082] Product adaptation range and installation advantages: The system using this method is applicable to FTUs of various manufacturers and supports two installation modes: built-in and external. Its design enables it to meet the requirements of maintenance-free after installation, significantly reducing the maintenance cost. For example, in a certain district of Guangzhou, after installing this device, the on-site construction is convenient and fast, and it can complete the rapid transformation without changing the original manufacturer's design, ensuring the normal operation of the equipment.

[0083] Power-off-free transformation and comprehensive detection: A significant advantage of the system using this method is that it can be transformed without power-off to ensure the comprehensive detection of the operation status of the FTU and the encryption communication module. In actual applications, the system using this method can monitor the operation status of the power module in real time and automatically issue an alarm when abnormalities are found. For example, in a certain city, the installation of the system using this method enables the real-time detection of the health status of the power processing module, avoiding the power outage risk caused by module damage, solving on-site pain points and improving efficiency

[0084] The system using this method effectively solves the on-site pain points in multiple regions, such as the lack of basis for lead-acid battery replacement and the damage of the power management module after long-term operation. In a certain district of Guangzhou, after installing and using the system of this method, the operation of the power module is monitored in real time, and abnormalities can be detected and processed in time, reducing the workload of personnel and operation and maintenance costs. In addition, the introduction of the self-healing function of faults improves the efficiency of troubleshooting and reduces the power outage time and scope.

[0085] Through applications in different regions, the effectiveness of the system using this method has been verified. For example, in a certain city in Guangdong, after installing and using the system of this method, the operation time of the power management module has been extended, and the abnormal operation problems of the communication module and the terminal have been solved, avoiding the situation of blindly replacing spare parts. Experimental data shows that the power outage time has been reduced by 70%, and the maintenance cost has been reduced by 60%, improving the overall online rate of the automation of the distribution network.

[0086] The system using this method significantly improves the reliability and economic benefits of the distribution network through its maintenance-free design, fast installation ability and real-time monitoring function. In the future, with the continuous progress of technology, this system is expected to be applied in a wider range of fields, providing stronger guarantees for the stability of the power system and user satisfaction.

[0087] The above-disclosed are only one or more preferred embodiments of this application, and the scope of rights of this application cannot be limited thereby. Those of ordinary skill in the art can understand the entire or partial processes of implementing the above embodiments, and the equivalent changes made according to the claims of this application still fall within the scope covered by this application.

Claims

1. An online detection and automatic repair method for the operating state of an automated switch terminal, characterized in that, Including the following steps: Read the battery voltage and temperature of the automatic switch terminal, and determine whether they are within the battery safety threshold range. If they are within the battery safety threshold range, update the status database (status). If they are not within the battery safety threshold range, perform an equalization operation to ensure that the output voltages of all battery units are balanced (stable operation). Set the fault judgment threshold range, and perform a status detection on the automatic switch terminal. Determine whether the collected data is within the fault judgment threshold range. If so, update the status database. If not, trigger a refined fault search operation and transmit the fault information to the terminal, and determine whether automatic repair can be performed. If automatic repair can be performed, report it to the background to update the status database. If automatic repair cannot be performed, report it to the background to update the status database.

2. The online-detectable automated switch terminal operation status and automatic repair method according to claim 1, characterized in that, Read the battery voltage and temperature of the automatic switch terminal, determine whether they are within the battery safety threshold range, and decide whether to perform an equalization operation by judging whether they are within the battery safety threshold range to ensure the stable operation of all battery units. The previous steps include: Read the energy storage module, communication module, and terminal operation status information data.

3. The online-detectable automatic switch terminal operation state and automatic repair method according to claim 1, characterized in that, Read the battery voltage and temperature of the automatic switch terminal, determine whether they are within the battery safety threshold range, and decide whether to perform an equalization operation by judging whether they are within the battery safety threshold range to ensure the stable operation of all battery units. The specific steps include: Read the battery voltage V (battery) and temperature T (battery) ; Judge whether the battery voltage and battery temperature are within the battery safety threshold range: V (min) <V (battery) <V (max) T (min) <T (battery) <T (max) If they are not within the battery safety threshold range, perform a battery charge equalization operation; After the equalization operation is completed, perform a fault judgment again. If no fault occurs, perform a status detection again. By reading the battery voltage and temperature of the automatic switch terminal and judging whether to perform an equalization operation, ensure the stable operation of all battery units.

4. The method for online detecting the operating state of an automated switch terminal and automatic repair according to claim 1, wherein Set the fault judgment threshold range, and perform a status detection on the automatic switch terminal. Determine whether the collected data is within the set fault judgment threshold range. If so, perform a status detection. If not, perform a refined fault search, and narrow the fault range by analyzing the fault module: Fault judgment includes energy storage module fault judgment, communication module fault judgment, and terminal operation status fault judgment.

5. The method for online detecting the operation state of an automated switch terminal and automatic repair according to claim 4, wherein Set the fault judgment threshold range, and perform a status detection on the automatic switch terminal. Determine whether the collected data is within the set fault judgment threshold range. If so, perform a battery status detection. If not, perform a refined fault search, record the relevant parameters, and transmit them to the terminal, and determine whether to perform automatic repair. The specific steps include: Judge whether the collected data is within the set fault judgment threshold range. If not, narrow the fault range by analyzing the fault information. If a certain module parameter exceeds the set fault judgment threshold range, mark the module as a faulty module; Determine the faulty module and record the relevant parameters; Generate corresponding module fault signals according to the fault status; Transmit the mapping information of each module to the built-in communication module; The built-in communication module transmits the fault information to the terminal; The terminal performs a fault type judgment.

6. The method for online detecting the operation state of an automatic switch terminal and automatic repair according to claim 5, characterized in that, After the terminal performs a fault type judgment and confirms that a fault has occurred, the specific steps include: Determine whether the fault type can be automatically repaired. If the communication module becomes unresponsive, restart the communication module to restore normal communication function. If the original supercapacitor has insufficient power or is damaged, seamlessly switch to the FTU backup power supply, store the abnormal information, and report it to the background system; The background system updates the status database.

7. The online-detectable automatic switch terminal operation state and automatic repair method according to claim 5, characterized in that, After the terminal judges the fault type, the specific steps include: Determine whether the fault type can be automatically repaired. If not, send the fault point location information; Generate an exception report; Send a request for manual intervention; Update the status database; Send a request for manual intervention; Wait for the rescue personnel.

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