Electrical equipment fault information classification interaction method, system and equipment and storage medium

Abstract

The invention relates to the technical field of intelligent monitoring of electrical equipment, in particular to an electrical equipment fault information classification interaction method, system and equipment and a storage medium. The input information of the electrical panel cabinet is obtained, and whether the equipment is in a running state or a maintenance state is identified through a PLC; when the equipment is in a maintenance state, executing fault classification locking, locking the output of a system-level fault mark and an equipment-level fault mark, and setting a maintenance state mark; when the equipment is in a running state, performing fault grading setting according to the influence degree of the fault signal to obtain a system-level fault mark, an equipment-level fault mark and an environment-level fault mark; and the set fault mark is transmitted to the inspection terminal through the signal transmitting device. By establishing fault hierarchical locking and state recognition, intelligent information screening and accurate transmission in different working states are realized, false alarm interference in a maintenance state is eliminated, fault information performance and operation and maintenance response efficiency are improved, and the intelligent monitoring level of electrical equipment is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of intelligent monitoring of power equipment, and in particular to an electrical equipment fault information classification interaction method, system, device and storage medium. BACKGROUND

[0002] In the power system, the electrical panel as an important carrier of carrying electrical equipment and control system, undertakes the key functions of power distribution, equipment protection and operation monitoring. With the continuous expansion of the scale of the power system and the improvement of the automation level, the equipment integrated in the electrical panel is increasingly complex, including circuit breakers, protection devices, control circuits and various auxiliary equipment, and the running state of these equipment is directly related to the safe and stable operation of the entire power system.

[0003] The traditional electrical panel monitoring method mainly relies on manual inspection and simple signal light indication, which has problems such as untimely information transmission and inaccurate fault identification. The inspection personnel need to regularly check the equipment state on site, record the operation data, which is low in work efficiency and easy to miss important fault information. Especially during equipment maintenance, due to the lack of state identification, false alarm signals generated in the maintenance state often interfere with the judgment of the operating personnel, causing unnecessary trouble, and even may lead to misoperation.

[0004] In recent years, with the development of mobile internet technology, the device inspection system based on mobile terminal has also been gradually used, in which the inspection terminal mainly receives equipment state information through wireless communication mode to realize real-time transmission and remote monitoring of information, and is also widely used in the field of electrical panel. However, the existing information interaction method often lacks hierarchical management of fault information, and cannot intelligently filter and process information according to different working states of the equipment. If all fault signals are uniformly reported to the inspection terminal, not only the information processing burden is increased, but also a large number of invalid alarms will be generated during equipment maintenance, affecting the judgment and response efficiency of the operating personnel to the real fault.

[0005] In addition, the monitoring of the operating environment of the electrical panel also has deficiencies, such as the abnormality of environmental parameters such as temperature, humidity and smoke often indicates potential safety hazards, but the traditional monitoring system lacks systematicity in collecting and processing environmental information, and it is difficult to associate with equipment fault information. SUMMARY

[0006] In view of the problems existing in the prior art, the present application is proposed.

[0007] Therefore, the problem to be solved by the present application is how to solve the problem that a large number of signals irrelevant to actual faults are generated due to normal maintenance operations such as power failure of the equipment, disconnection of the secondary circuit and the like in the maintenance state, and these signals, if not distinguished and all transmitted to the patrol terminal, will cause false alarm flooding and interfere with the judgment of the real fault by the operation personnel.

[0008] To solve the above technical problems, the present application provides the following technical solutions. In a first aspect, the present application provides an electrical equipment fault information classification interaction method, which comprises: acquiring incoming information of an electrical panel, the incoming information comprising fault signals and equipment state signals; judging the incoming information by a PLC to identify whether the current equipment is in a running state or a maintenance state; When the equipment is in the maintenance state, a fault grading lockout strategy is executed to lock out the output of system-level fault flags and equipment-level fault flags, and set the maintenance state flag; When the equipment is in the running state, fault grading setting is performed according to the influence degree of the fault signals to obtain system-level fault flags, equipment-level fault flags and environment-level fault flags; The set fault flags are transmitted to a patrol terminal by a signaling device to establish a bottom-layer information interaction channel between the electrical panel and the patrol terminal.

[0009] As a preferred scheme of the electrical equipment fault information classification interaction method, the step of identifying whether the current equipment is in the running state or the maintenance state comprises reading state switching node signals and upper computer soft pad signals of the electrical panel. The current state of the equipment is determined according to the state switching node signals and the upper computer soft pad signals to obtain the running state or the maintenance state.

[0010] As a preferred scheme of the electrical equipment fault information classification interaction method, the step of executing the fault grading lockout strategy comprises: locking out system-level fault flags affecting the running of the equipment in the maintenance state, locking out equipment-level fault flags not affecting the running of the system in the maintenance state, and not locking out environment-level fault flags of environmental abnormalities in the maintenance state.

[0011] The beneficial effects of the preferred technical solution are: by locking the system-level fault flag affecting the operation of the equipment in the maintenance state, avoiding false alarm transmission to the inspection terminal caused by normal maintenance operation such as circuit breaker refusal, protection device failure, etc., reducing the information interference of the operation personnel; locking the equipment-level fault flag that does not affect the system operation in the maintenance state, preventing invalid transmission of non-critical faults such as auxiliary equipment abnormalities, indicator light failures, etc. in the maintenance state, and reducing the information processing burden of the inspection terminal; the environmental-level fault flag of environmental abnormalities is not locked in the maintenance state, ensuring that temperature, humidity, smoke and other environmental parameter abnormalities can be transmitted in time.

[0012] As a preferred scheme of the electrical equipment fault information classification interaction method, wherein: the fault classification setting according to the influence degree of the fault signal includes judging whether the device has a system-level fault, and if so, setting a system-level fault flag; judging whether the device has a device-level fault, and if so, setting a device-level fault flag; judging whether the device has an environmental-level fault, and if so, setting an environmental-level fault flag.

[0013] As a preferred scheme of the electrical equipment fault information classification interaction method, wherein: the system-level fault flag is a fault affecting the operation of the equipment, including at least one of circuit breaker refusal, protection device failure and main loop disconnection; the device-level fault is a fault that does not affect the system operation, including at least one of auxiliary equipment abnormalities, indicator light failures and secondary loop abnormalities; The environmental-level fault flag is derived from an environmental monitoring intelligent terminal, which monitors environmental parameters of the electrical panel and outputs an environmental abnormality signal, and the environmental parameters include at least one of temperature, humidity, smoke, vibration, flame and sound.

[0014] The beneficial effects of the preferred technical solution are: by defining the system-level fault as a fault affecting the operation of the equipment, clearly defining critical fault types such as circuit breaker refusal, protection device failure and main loop disconnection, providing clear fault classification basis for PLC judgment, ensuring that faults affecting the safe operation of the power system can be identified and handled first; by defining the device-level fault as a fault that does not affect the system operation, covering non-critical fault types such as auxiliary equipment abnormalities, indicator light failures and secondary loop abnormalities, realizing reasonable division of fault severity, and avoiding confusion in processing different levels of faults; by introducing an environmental monitoring intelligent terminal to collect environmental parameters such as temperature, humidity, smoke, vibration, flame and sound, and taking environmental abnormalities as an environmental-level fault flag, the monitoring dimension of fault information is expanded.

[0015] As a preferred embodiment of the electrical equipment fault information classification and interaction method of the present invention, the step of transmitting the set fault flag to the inspection terminal through the transmitting device includes: outputting the set fault flag to the transmitting device through the PLC; the transmitting device establishing a communication connection with the inspection terminal through wireless communication. The fault flag is sent to the inspection terminal in the form of a digital signal, and the inspection terminal displays and records the fault information.

[0016] As a preferred embodiment of the electrical equipment fault information classification and interaction method of the present invention, it further includes: when switching from maintenance state to operation state, releasing the lockout of system-level fault flags and equipment-level fault flags; The input information is reread, and the setting status of each level of fault flag is updated according to the current device status.

[0017] Secondly, embodiments of the present invention provide an electrical equipment fault information classification and interaction system, which includes an access module for collecting equipment access information of electrical control cabinets, wherein the access information includes fault signals and equipment status signals. The PLC module is used to receive the input information and make judgments, identify the current operating status and maintenance status of the equipment, execute the fault classification interlocking strategy or fault classification setting, and obtain the corresponding fault flag. A transmitting device is used to receive the fault flags output by the PLC module and transmit them to the inspection terminal; The inspection terminal is used to receive fault flags transmitted by the transmitting device and to display and record fault information.

[0018] Thirdly, embodiments of the present invention provide a computer device, including a memory and a processor, wherein the memory stores a computer program, wherein: when the computer program instructions are executed by the processor, they implement the steps of the electrical equipment fault information classification and interaction method as described in the first aspect of the present invention.

[0019] Fourthly, embodiments of the present invention provide a computer-readable storage medium having a computer program stored thereon, wherein: when the computer program instructions are executed by a processor, they implement the steps of the electrical equipment fault information classification and interaction method as described in the first aspect of the present invention.

[0020] The beneficial effects of this invention are as follows: By acquiring the access information of electrical control panels and identifying the operating and maintenance status of equipment, this invention solves the problem of false alarms caused by the inability of traditional monitoring systems to distinguish the operating status of equipment; by implementing fault classification interlocking, system-level fault flags and equipment-level fault flags are interlocked while environmental-level fault flags are retained in the maintenance state, eliminating a large number of invalid alarms generated during normal maintenance operations such as circuit breaker testing and protection device calibration, reducing the information processing burden of inspection terminals, and ensuring that environmental abnormal signals such as temperature and smoke can be transmitted in a timely manner to protect the safety of maintenance personnel; by classifying and setting faults in three levels according to the degree of fault impact in the operating state, this invention achieves refined management of system-level faults that affect equipment operation, equipment-level faults that do not affect system operation, and environmental-level faults that are environmentally abnormal, enabling maintenance personnel to formulate differentiated responses according to the fault level. Attached Figure Description

[0021] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1 A flowchart for a method of classifying and interacting with fault information of electrical equipment; Figure 2 Computer equipment diagram for a method of classifying and interacting with electrical equipment fault information; Figure 3 System diagram of a method for classifying and interacting with fault information of electrical equipment; Figure 4 A PLC logic calculation flowchart for a method of classifying and interacting with electrical equipment fault information. Detailed Implementation

[0023] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0024] Many specific details are set forth in the following description in order to provide a full understanding of the invention. However, the invention may also be practiced in other ways different from those described herein, and those skilled in the art can make similar extensions without departing from the spirit of the invention. Therefore, the invention is not limited to the specific embodiments disclosed below.

[0025] Secondly, the term "an embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it a single embodiment or an embodiment selectively excluded from other embodiments.

[0026] Example 1 Reference Figure 1 - Figure 2 As a first embodiment of the present invention, this embodiment provides a method for classifying and interacting electrical equipment fault information, including, S100: Obtain the input information of the electrical control panel, which includes fault signals and equipment status signals. The PLC judges the input information to identify whether the current equipment is in operation or maintenance state.

[0027] S200: When the equipment is in maintenance mode, execute the fault classification interlocking strategy, lock the output of system-level fault flags and equipment-level fault flags, and set the maintenance mode flag.

[0028] S300: When the equipment is in operation, fault classification is performed according to the degree of influence of the fault signal to obtain system-level fault flags, equipment-level fault flags and environmental-level fault flags.

[0029] S400: The fault flag after being set is transmitted to the inspection terminal through the transmitting device, establishing a low-level information interaction channel between the electrical control panel and the inspection terminal.

[0030] It should be noted that electrical control panels play a crucial role in substations and power distribution systems, performing key functions such as power distribution, equipment protection, and operation control. The circuit breakers, protection devices, control circuits, and various auxiliary equipment integrated within them generate signals of different natures in operation and maintenance states. In operation, equipment fault signals need to be promptly transmitted to the inspection terminal for quick response by operators. However, in maintenance state, normal maintenance operations such as power outages and secondary circuit disconnections generate a large number of signals unrelated to actual faults. If all these signals are transmitted indiscriminately to the inspection terminal, it will lead to a flood of false alarms, interfering with operators' judgment of the true fault.

[0031] Therefore, through steps S100-S400, the input information of the electrical control panel is first collected, and the PLC identifies whether the equipment is in operation or maintenance mode, establishing a foundation for status identification. When the equipment is in maintenance mode, fault classification interlocking is executed, locking system-level and equipment-level fault flags while retaining environmental-level fault flags, realizing intelligent information filtering in maintenance mode. When the equipment is in operation mode, three-level classification and setting are performed according to the impact of fault signals, establishing a complete fault classification system. Finally, the processed fault flags are transmitted to the inspection terminal through a transmitting device, realizing accurate information interaction between the electrical control panel and the inspection terminal, eliminating false alarms during maintenance. Example 2 Reference Figure 1 - Figure 4 This is the second embodiment of the present invention.

[0032] In this embodiment, step S100 involves acquiring the access information of the electrical control panel, which includes fault signals and equipment status signals. The PLC then judges the access information to identify whether the current equipment is in operation or maintenance mode, including the following steps A1-A2: A1: Obtain the input information of the electrical control panel, which includes fault signals and equipment status signals, and judge the input information through the PLC.

[0033] Specifically, fault signals include circuit breaker failure signals, protection device failure signals, main circuit disconnection signals, auxiliary equipment abnormal signals, indicator light fault signals, secondary circuit abnormal signals, temperature exceeding limits signals, humidity exceeding limits signals, smoke detection signals, vibration abnormal signals, flame detection signals, and sound abnormal signals; equipment status signals include circuit breaker position signals, disconnector switch position signals, grounding switch position signals, pressure plate on / off status signals, and maintenance / operation status switching signals.

[0034] The PLC uses a signal recognition algorithm based on timing characteristics to determine input information. By analyzing the duration, frequency of change, and waveform characteristics of the signal, it distinguishes between signals and interference signals. The signal feature vector X is represented as: Where A represents the signal amplitude characteristic. , Let be the signal value at the i-th sampling point; T be the signal duration. Δt is the sampling interval; R is the signal rate of change. .

[0035] PLCs determine the nature of signals by setting characteristic thresholds, such as amplitude thresholds. Set to 0.7, duration threshold Set to 50ms, rate of change threshold Set to 20V / s. When the eigenvector satisfies A> And T> And R < When the signal is stable, the signal is determined to be stable; when the feature vector does not meet the above conditions, the signal is determined to be an interference signal, and the PLC does not perform further processing.

[0036] The PLC internally establishes a fault signal classification index table. This index table uses a hash mapping structure to map input channel numbers to fault type codes. The fault type code uses three digits: the first digit indicates the fault level (1 for system-level fault, 2 for equipment-level fault, 3 for environmental fault); the second and third digits represent the fault subtype number. For example, the code for a circuit breaker failure signal is 101, a protection device failure signal is 102, a main circuit open circuit signal is 103, an auxiliary equipment abnormal signal is 201, an indicator light fault signal is 202, a temperature over-limit signal is 301, and a smoke detection signal is 303. The PLC quickly determines the fault type corresponding to the input signal by querying the index table.

[0037] For environmental fault signals, the PLC employs a dynamic threshold judgment method to improve detection accuracy. Taking temperature monitoring as an example, the intelligent environmental monitoring terminal collects the internal temperature values ​​of the electrical control panel. The PLC calculates the reference temperature based on historical temperature data. and temperature standard deviation Dynamic temperature threshold The calculation formula is: Where k is a threshold coefficient, dynamically adjusted according to season and environmental conditions: k is set to 2.5 in spring and autumn, 3.0 in summer, and 2.0 in winter. > When the temperature exceeds the limit, the PLC sets the fault flag. Compared to the fixed threshold method, the dynamic threshold method can adapt to seasonal changes in ambient temperature and reduce false alarms.

[0038] The PLC uses a logical combination recognition method to determine the status signals of the equipment. Taking circuit breaker position recognition as an example, the PLC simultaneously reads the circuit breaker closed position signal. and quantile signals The circuit breaker status is determined based on the signal combination. The status determination logic is expressed as follows: when =2 ( =1, =0), indicating that the circuit breaker is in the closed position; when =1 ( =0, =1), indicating that the circuit breaker is in the open position; when =3 or When =0, the circuit breaker position signal is determined to be abnormal, and the PLC set position does not correspond to the fault flag.

[0039] A2: The steps to identify whether the current equipment is in operation or maintenance state include reading the status switching node signal of the electrical control panel and the soft pressure board signal of the host computer. The current state of the equipment is determined based on the state switching node signal and the host computer soft pressure plate signal, thus obtaining the running state or the maintenance state.

[0040] Specifically, the status switching node signal originates from the maintenance / operation status conversion switch on the electrical control panel. This switch outputs two signals: the operation status node signal and the maintenance / operation status conversion signal. and maintenance status node signals The host computer sends soft-pressing board signals to the PLC via the communication network, including running soft-pressing board signals. and maintenance soft pressure plate signal The PLC determines the actual operating status of the equipment by reading the status combination of these four signals.

[0041] The PLC uses a weighted fusion algorithm to combine the state switching node signals and the upper computer soft pressure plate signals to determine the overall score of the equipment status. The calculation formula is: in, The node signal weight is set to 0.7; The signal weight for the soft pressure plate is set to 0.3. When When the value is greater than 0.5, the device is considered to be in operation; when... When -0.5 < -0.5, the equipment is considered to be in maintenance mode; when -0.5 ≤ When the value is ≤ 0.5, the device is determined to be in an uncertain state range. The PLC issues a state inconsistency alarm and determines the final state based on the node signal.

[0042] To ensure the stability of state recognition, the PLC incorporates a state duration determination mechanism. This duration is achieved through a sliding time window, with a window length of 10 seconds. Within the time window, the PLC acquires state signals at 1-second intervals, for a total of 10 acquisitions. State stability indicators are then implemented. The calculation formula is: in, Let be the state score for the i-th acquisition. For indicator functions, when When they point to the same state, I = 1; otherwise, I = 0. When the value is ≥ 0.9, the system is considered stable, and the PLC updates the equipment status; when... When the value is less than 0.9, the state is considered unstable. The PLC extends the observation time window to 20 seconds and recalculates the stability index.

[0043] The PLC internally establishes a state transition state machine, which includes four states: running, maintenance, transition, and fault. The state transitions follow these rules: When the current state is running and a stable maintenance signal is detected, the state machine transitions to the transition state. The duration of the transition state is the length of the time window for state stability assessment. After the transition state ends, the PLC transitions back to the maintenance state. When the current state is maintenance and a stable running signal is detected, the PLC transitions back to the running state after passing through the transition state. When a logical contradiction occurs in the combination of state signals (e.g., ...), the PLC transitions to the fault state. = 1 and When = 1), the state machine transitions to the fault state, and the PLC issues a status signal fault alarm.

[0044] The status identification result is stored in the PLC's status flag register. The status flag register uses a byte-type data structure: bit 0 represents the running state flag, bit 1 represents the maintenance state flag, bit 2 represents the transition state flag, and bit 3 represents the status fault flag. When the equipment is in running state, the running state flag = 1, and the other flag bits are 0; when the equipment is in maintenance state, the maintenance state flag = 1, and the other flag bits are 0. The contents of the status flag register are read by the subsequent fault classification interlocking module and fault classification setting module, serving as the basis for fault handling logic judgment.

[0045] In this embodiment, when the equipment is in maintenance mode in step S200, a fault classification interlocking strategy is executed to interlock the output of system-level fault flags and equipment-level fault flags, and to set the maintenance mode flag, including the following step B1: B1: The fault classification interlocking strategy includes interlocking system-level fault flags that affect equipment operation in a maintenance state, interlocking equipment-level fault flags that do not affect system operation in a maintenance state, and not interlocking environmental-level fault flags that are in an abnormal environment in a maintenance state.

[0046] Specifically, the interlocking logic module includes three functional units: a fault flag register, an interlocking gating unit, and an output selector. The fault flag register is divided into three groups: system-level fault flag registers. Device-level fault flag register and environmental level fault flag register Each register group uses a bit array, with each bit corresponding to a specific fault type's set state. A bit value of 1 indicates that the fault has been triggered, and a bit value of 0 indicates that the fault has not been triggered.

[0047] The interlocking gate control unit uses logic gate circuits to implement interlocking control. For system-level fault flags, the logical expression of the interlocking gate control unit is: in, System-level fault flag output, The contents of the system-level fault flag register. This is a maintenance status indicator. When... When = 1, the result of the logical AND operation is always 0, the system-level fault flag is locked, and it will not be output to the transmitting device. The same locking logic is used for device-level fault flags: when When = 1, the equipment-level fault flag is also locked. This locking ensures that fault signals such as circuit breaker failure, protection device malfunction, and auxiliary equipment abnormality generated during maintenance will not be transmitted to the inspection terminal, avoiding false alarm interference.

[0048] For environmental fault flags, the interlocking gate control unit does not have interlocking logic set, and the environmental fault flag is output directly: The output of environmental fault flags is independent of equipment status, ensuring that abnormal environmental parameters such as temperature, humidity, smoke, vibration, flame, and sound are transmitted to the inspection terminal in real time under any condition. When the PLC's status flag register... When the value changes from 0 to 1, the PLC triggers the maintenance status flag setting procedure. The setting procedure includes three steps: First, the PLC will... Write the fourth element of the output vector; secondly, the PLC updates the control signal of the interlocking gate control unit and activates the interlocking logic of the system-level and equipment-level fault flags; finally, the PLC transmits the maintenance status flag to the transmitting device through an independent output channel. After receiving the maintenance status flag, the transmitting device displays that the equipment is in maintenance status on the inspection terminal interface and automatically adjusts the filtering rules of the fault alarm to only display environmental fault alarms.

[0049] During the execution of the interlocking strategy, the PLC records all interlocked fault signals to the interlocking fault log. The log entries include the fault signal name, trigger time, interlocking time, and interlocking reason. The log is stored using a circular buffer with a buffer size of 500 records. When the equipment switches back from maintenance to operation, the PLC automatically generates a summary report of interlocking faults. This report lists all fault signals triggered but interlocked during maintenance, allowing maintenance personnel to verify the equipment status and maintenance quality.

[0050] In this embodiment, in step S300, when the device is in operation, fault classification is performed based on the degree of influence of the fault signal to obtain system-level fault flags, device-level fault flags, and environmental-level fault flags, including the following steps C1-C3: C1: Fault classification and setting based on the impact of the fault signal includes: determining whether the equipment has a system-level fault, and if so, setting the system-level fault flag; determining whether the equipment has a device-level fault, and if so, setting the device-level fault flag. Determine if the equipment has an environmental fault; if so, set the environmental fault flag.

[0051] Specifically, the fault grading and setting process is based on a fault impact assessment model. The PLC internally establishes a fault impact assessment matrix with dimensions M×3, where M is the total number of fault signals and 3 is the number of fault levels. Matrix element f ij This represents the impact degree of the i-th fault signal on the j-th level fault, with the impact degree ranging from [0, 1]. For each fault signal, the PLC assigns a corresponding impact threshold based on the degree of impact of the signal on system operation, equipment function, and environmental safety. The impact degree assessment of system-level faults focuses on whether the fault leads to the shutdown of main equipment, power system disconnection, or protection failure; the impact degree assessment of equipment-level faults focuses on whether the fault affects auxiliary functions, indication functions, or secondary circuit functions; and the impact degree assessment of environmental-level faults focuses on whether the fault threatens personal safety or equipment safety.

[0052] System-level fault diagnosis employs a critical fault identification algorithm. This algorithm determines whether a fault is system-level by analyzing the causal relationship between fault signals and the operating status of the main equipment. The algorithm inputs are fault signal codes and a set of equipment operating parameters, and outputs the system-level fault determination result. The determination logic is as follows: if the fault type corresponding to fault signal code t is circuit breaker failure, protection device failure, or main circuit disconnection, then the system-level fault determination result is directly set to 1, and the system-level fault flag is set. If the fault type corresponding to the fault signal code is another fault, then the impact of the fault on the equipment operating parameters is analyzed. If the fault causes the equipment operating parameters to exceed the normal range and cannot be compensated for by backup equipment or redundant configuration, then the system-level fault determination result is set to 1; otherwise, the system-level fault determination result is set to 0.

[0053] Equipment-level fault diagnosis employs functional impact analysis (FIA). FIA assesses the impact of fault signals on various equipment functions. If a fault only affects auxiliary, monitoring, or indicating functions without affecting the basic operational capabilities of the main equipment, it is classified as an equipment-level fault. The algorithm inputs are the fault signal code and the equipment function list, and the output is the equipment-level fault determination result. The determination logic is as follows: iterate through the equipment function list and check whether the fault corresponding to the fault signal code affects the critical functions in the list. If it only affects non-critical functions (such as indicator lights, heaters, auxiliary fans, etc.), the equipment-level fault determination result is set to 1, and the equipment-level fault flag is set; if it affects critical functions, the equipment-level fault determination result is set to 0, and the equipment-level fault flag is not set.

[0054] Environmental fault diagnosis is based on sensor data from an intelligent environmental monitoring terminal. This terminal integrates temperature, humidity, smoke, vibration, flame, and sound sensors. Each sensor collects environmental parameters inside the electrical control panel in real time and compares them with set thresholds. When environmental parameters exceed the threshold range, the sensor outputs an abnormal signal to the PLC. Upon receiving the abnormal environmental signal, the PLC determines the severity of the environmental fault based on the type of abnormal parameter. For example, temperature exceeding limits is divided into three levels: a temperature exceeding the normal range by less than 10% is considered a minor exceedance, triggering a Level 1 environmental alarm; a temperature exceeding the normal range by 10% to 30% is considered a moderate exceedance, triggering a Level 2 environmental alarm; and a temperature exceeding the normal range by more than 30% is considered a severe exceedance, triggering a Level 3 environmental alarm and initiating an emergency plan. The PLC sets the corresponding environmental fault flag based on the severity of the abnormal environmental signal.

[0055] C2: System-level fault indicators are faults that affect equipment operation, including at least one of circuit breaker failure to operate, protection device failure, and main circuit disconnection; equipment-level faults are faults that do not affect system operation, including at least one of auxiliary equipment abnormality, indicator light failure, and secondary circuit abnormality.

[0056] Specifically, the identification of circuit breaker failure to operate faults is based on a consistency check between the circuit breaker operation command and the actual position feedback. When the PLC issues a circuit breaker closing command, it reads the circuit breaker position feedback signal within a set action time window (typically 200ms). If the circuit breaker is still in the open position at the end of the time window, it is determined to be a circuit breaker failure to close fault; if the PLC issues a circuit breaker opening command and the circuit breaker is still in the closed position within the time window, it is determined to be a circuit breaker failure to open fault. Circuit breaker failure to operate faults directly affect the switching operation and fault isolation capability of the equipment, and therefore are classified as system-level faults. After detecting a circuit breaker failure to operate fault, the PLC sets the corresponding bit in the system-level fault flag register and records the time of failure to operate, the type of operation command, and the circuit breaker position feedback information.

[0057] Fault identification of the protection device is achieved through self-test signals and communication status monitoring. The protection device periodically sends a heartbeat signal to the PLC, with a heartbeat signal period of 1 second. The PLC monitors the reception interval of the heartbeat signal through a timer. If no heartbeat signal is received for three consecutive heartbeat cycles, it determines that the protection device has lost power or communication has been interrupted. The self-test fault signals of the protection device include CPU abnormality, memory fault, power supply abnormality, sampling channel fault, etc. These signals are transmitted to the PLC through the fault output contacts of the protection device.

[0058] Auxiliary equipment malfunctions include faults in auxiliary facilities that do not affect the basic functions of the main equipment, such as heater failures, fan failures, and lighting failures. Heater failures are identified by monitoring the heater's operating current; a heater is considered faulty if it is in operation but the operating current is zero or exceeds the rated current by more than 20%. Fan failures are identified by monitoring the fan's operating status contacts and changes in the internal temperature of the electrical control panel; a fan failure is identified if the fan status contacts do not activate after a fan activation command is issued, or if the internal temperature of the control panel continues to rise beyond the normal range. Lighting failures are identified by monitoring the operating current of the lighting circuit. These auxiliary equipment failures do not affect the switching and protection functions of the main equipment and are therefore classified as equipment-level failures.

[0059] Indicator light malfunctions are identified by checking the integrity of the indicator light circuit and its operating current. The electrical control panel has various indicator lights, including running indicators, fault indicators, and power indicators. The PLC periodically checks the operating status of each indicator light circuit. If the circuit current is zero when the indicator light should be on, or if there is current in the circuit when the indicator light should not be on, the indicator light is considered faulty. Indicator light malfunctions only affect the on-site display of equipment status and do not affect the actual operation or remote monitoring of the equipment; therefore, they are classified as equipment-level faults.

[0060] Secondary circuit anomalies include circuit faults that affect measurement and control functions, such as control circuit open circuits, voltage circuit grounding, and current circuit open circuits. These anomalies are detected by dedicated monitoring relays, which monitor the voltage and current of the secondary circuit in real time and output a fault signal to the PLC when an anomaly is detected. Although secondary circuit anomalies may affect measurement accuracy and some control functions, they do not affect the basic operation of the system if the protection devices and main equipment are functioning normally; therefore, they are classified as equipment-level faults.

[0061] C3: Environmental fault indicators originate from an environmental monitoring intelligent terminal. The environmental monitoring intelligent terminal monitors the environmental parameters of the electrical control panel and outputs an abnormal environmental signal. The environmental parameters include at least one of temperature, humidity, smoke, vibration, flame, and sound.

[0062] Specifically, temperature monitoring uses a PT100 platinum resistance temperature sensor with a measurement range of -40℃ to +120℃ and a measurement accuracy of ±0.5℃. The sensor is installed in hot spots inside the electrical control panel, such as busbar connections, circuit breaker contact chambers, and cable joints. Humidity monitoring uses a capacitive humidity sensor with a measurement range of 0%RH to 100%RH and a measurement accuracy of ±3%RH. The sensor is installed near the ventilation openings of the electrical control panel. Smoke monitoring uses a photoelectric smoke sensor. The sensor detects the concentration of particulate matter in the air and outputs a smoke detection signal when the particulate matter concentration exceeds a set threshold.

[0063] The intelligent environmental monitoring terminal compares the collected environmental parameters with set thresholds. When a parameter exceeds the threshold range, an environmental anomaly signal is generated. This signal is transmitted to the PLC in digital form via RS485 bus or Ethernet. The signal format uses the Modbus protocol, and the data frame includes the device address, function code, data content, and checksum. The data content includes the environmental parameter type code, current measured value, threshold, and degree of exceedance. Upon receiving the environmental anomaly signal, the PLC parses the data frame content and sets the corresponding environmental-level fault flag based on the environmental parameter type and degree of exceedance.

[0064] Environmental fault flags employ a hierarchical coding system with a 3XX format. The first digit, 3, indicates an environmental fault, while the last two digits represent the specific environmental parameter type and exceedance level. Temperature exceedances are coded as 301 to 303, corresponding to mild, moderate, and severe exceedances, respectively; humidity exceedances are coded as 304 to 306; smoke detection is coded as 307; vibration anomalies are coded as 308 to 309, corresponding to low-frequency and high-frequency vibration anomalies, respectively; flame detection is coded as 310; and sound anomalies are coded as 311 to 312, corresponding to continuous and pulsed sound anomalies, respectively. The PLC sets the corresponding bit in the environmental fault flag register according to the code of the environmental anomaly signal and outputs the environmental fault flag to the transmitting device.

[0065] In this embodiment, step S400 transmits the set fault flag to the inspection terminal via a transmitting device, establishing a low-level information interaction channel between the electrical control panel and the inspection terminal, including the following steps D1-D2: D1: The step of transmitting the set fault flag to the inspection terminal via the transmitting device includes: outputting the set fault flag to the transmitting device via the PLC; the transmitting device establishing a communication connection with the inspection terminal via wireless communication. The fault flag is sent to the inspection terminal in the form of a digital signal, and the inspection terminal displays and records the fault information.

[0066] Specifically, the PLC outputs the set fault flag to the transmitting device via the communication interface. The communication interface uses RS485 serial communication or Ethernet communication, and the communication protocol uses Modbus-RTU or Modbus-TCP. The PLC acts as the master device, and the transmitting device acts as the slave device. The PLC periodically sends fault flag data frames to the transmitting device. The data frame structure includes: device address (1 byte), function code (1 byte), data start address (2 bytes), data length (2 bytes), data content (N bytes), and checksum (2 bytes). The data content contains all elements of the fault flag output vector, with each element occupying 2 bytes.

[0067] The transmitting device uses an embedded wireless communication module, supporting LoRa, NB-IoT, or Wi-Fi wireless communication methods. LoRa communication is suitable for outdoor environments in substations and distribution stations, with a communication distance of 3 to 5 kilometers and a frequency band of 470MHz to 510MHz; NB-IoT communication is suitable for scenarios requiring public network access, with a communication distance covering the entire cellular network; Wi-Fi communication is suitable for indoor environments in substations and distribution stations, with a communication distance of 100 to 300 meters.

[0068] The fault flag is sent to the inspection terminal in the form of a digital signal using a data packet encapsulation method. The data packet format includes: packet header identifier (2 bytes), protocol version (1 byte), data type (1 byte), timestamp (4 bytes), device number (2 bytes), data length (2 bytes), data content (N bytes), and packet tail check (2 bytes). The data content field stores the fault flag output vector, including system-level fault flags, device-level fault flags, environmental-level fault flags, and maintenance status flags.

[0069] The transmitting device performs data compression and encryption before sending data packets. Data compression uses the LZ77 lossless compression algorithm, achieving a compression ratio of 30% to 50%, reducing the amount of data transmitted wirelessly and lowering transmission latency. Data encryption uses the AES128 encryption algorithm with a 128-bit key length and CBC encryption mode. The encryption key is negotiated and generated by the transmitting device and the inspection terminal during connection establishment, and is updated every 24 hours to ensure communication security. After compression and encryption, the data packets are sent to the inspection terminal via the wireless channel.

[0070] After receiving the data packet, the inspection terminal decrypts and decompresses it to extract the fault flag information. Based on the level and type of the fault flag, the inspection terminal generates corresponding alarm information on the display interface. System-level faults are displayed as high-priority red alarms, equipment-level faults as medium-priority yellow alarms, and environmental faults as orange alarms. The alarm information includes the fault occurrence time, fault type, fault description, and device number. The inspection terminal records the received fault information to its local database, including the complete data packet of the fault flag, the reception time, and the processing status.

[0071] D2: Also includes, when switching from maintenance state to running state, unlocking the system-level fault flag and equipment-level fault flag; The input information is reread, and the setting status of each level of fault flag is updated according to the current device status.

[0072] Specifically, the trigger condition for switching from maintenance state to running state is that the equipment status flag register changes from 1 to 0 and then changes from 0 to 1. After the PLC detects the status flag change, it initiates the interlock release procedure. The interlock release procedure first shuts down the interlock control signal of the interlock gate control unit, restoring the output logic of the system-level fault flag and the equipment-level fault flag from the interlocked state to the normal state. The logic expression of the interlock gate control unit is restored to: , This means that the contents of the fault flag register are directly output and are no longer controlled by the maintenance status flag.

[0073] After the interlock is released, the PLC rereads the status of all input information channels. The rereading process uses a full-channel scan mode, with a scan cycle set to a single scan and a scan time of approximately 100ms. The PLC sequentially reads the signal value of each input channel and updates the input signal status table. For fault signals triggered during maintenance, if the fault signal is still present (signal value 1) when the interlock is released, the PLC handles the fault according to the normal fault classification and setting procedure; if the fault signal has returned to normal (signal value 0) when the interlock is released, the PLC clears the fault setting status and does not generate a fault alarm.

[0074] Updating the setting status of fault flags at all levels based on the current equipment status involves two steps: fault verification and fault flag update. Fault verification checks the persistence and logical consistency of the fault signal. Persistence verification requires the fault signal to persist for at least 500ms after the interlock is released to confirm a fault, avoiding transient signal interference. Logical consistency verification checks the matching of the fault signal with the equipment's operating status; for example, a circuit breaker failure to open should not result in a fault. A fault signal passing the fault verification triggers a fault flag update. The PLC sets the corresponding fault flag to 1 according to the fault type and generates a fault flag output vector, which is then sent to the transmitting device.

[0075] During the fault flag update process, the PLC compares the fault flag status before and after the interlock is released and generates a fault change report. The fault change report records faults added, reverted, and persistent during the maintenance period. New faults refer to those that occurred during maintenance and still exist after the interlock is released; reverted faults refer to those that existed before maintenance but were repaired during maintenance; persistent faults refer to those that existed before maintenance but were not repaired during maintenance. The fault change report is stored in text format in the PLC's non-volatile memory and is available for maintenance personnel to view via a host computer interface for evaluating maintenance effectiveness and equipment health.

[0076] After the fault flag is updated, the PLC sends a status switch completion notification to the transmitting device. The notification message includes the device number, status switch time, pre-switch status, and post-switch status. Upon receiving the status switch completion notification, the transmitting device sends a device status change message to the inspection terminal. The inspection terminal updates the device status display, changing the device's status flag from maintenance to operation, and restores the normal display of system-level and device-level fault alarms. At this point, fault information exchange between the electrical control panel and the inspection terminal returns to normal operation.

[0077] In summary, this embodiment achieves accurate, safe, and reliable fault information classification and interaction between electrical control panels and inspection terminals by establishing a signal recognition algorithm based on time-series characteristics, a weighted fusion state judgment algorithm, a logic gating interlocking strategy, a hierarchical setting method for fault impact assessment, and reliable wireless communication. This technical solution eliminates false alarm interference during maintenance, improves the accuracy of fault information, enhances maintenance personnel's accurate control over equipment status, and improves the intelligent monitoring level and maintenance management efficiency of electrical equipment.

[0078] Example 3 The above is an illustrative scheme of an electrical equipment fault information classification and interaction method. It should be noted that the technical solution of this electrical equipment fault information classification and interaction system belongs to the same concept as the technical solution of the aforementioned electrical equipment fault information classification and interaction method. Details not described in detail in this embodiment can be found in the description of the technical solution of the aforementioned electrical equipment fault information classification and interaction method.

[0079] This embodiment also provides an electrical equipment fault information classification and interaction system, including: The input module is used to collect the input information of the electrical control cabinet, including fault signals and equipment status signals. The PLC module is used to receive the input information and make judgments, identify the current operating status and maintenance status of the equipment, execute the fault classification interlocking strategy or fault classification setting, and obtain the corresponding fault flag. A transmitting device is used to receive the fault flags output by the PLC module and transmit them to the inspection terminal; The inspection terminal is used to receive fault flags transmitted by the transmitting device and to display and record fault information.

[0080] This embodiment also provides an electronic device suitable for the classification and interaction of electrical equipment fault information, including: a memory and a processor; the memory is used to store computer-executable instructions, and the processor is used to execute the computer-executable instructions to realize the method for realizing the classification and interaction of electrical equipment fault information as proposed in the above embodiment.

[0081] This embodiment also provides a storage medium on which a computer program is stored. When the program is executed by a processor, it implements the method for classifying and interacting electrical equipment fault information as proposed in the above embodiments.

[0082] The storage medium proposed in this embodiment and the method for classifying and interacting electrical equipment fault information proposed in the above embodiments belong to the same inventive concept. Technical details not described in detail in this embodiment can be found in the above embodiments, and this embodiment has the same beneficial effects as the above embodiments.

[0083] Based on the above description of the implementation methods, those skilled in the art can clearly understand that the present invention can be implemented using software and necessary general-purpose hardware, and of course, it can also be implemented using hardware. Based on this understanding, the technical solution of the present invention, or the part that contributes to the prior art, can be embodied in the form of a software product. This computer software product can be stored in a computer-readable storage medium, such as a computer floppy disk, read-only memory (ROM), random access memory (RAM), flash memory, hard disk, or optical disk, etc., including several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute the methods of the various embodiments of the present invention.

[0084] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and not to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. An electrical equipment failure information classification interaction method, characterized in that: The method comprises: acquiring incoming information of an electrical panel, the incoming information comprising fault signals and device state signals; judging the incoming information by a PLC to identify whether the current device is in a running state or a maintenance state; When the device is in the maintenance state, a fault classification locking strategy is executed to lock the output of system-level fault flags and device-level fault flags and set a maintenance state flag; When the device is in the running state, fault classification setting is performed according to the influence degree of the fault signals to obtain system-level fault flags, device-level fault flags and environment-level fault flags; The set fault flags are transmitted to a patrol terminal by a signaling device to establish a bottom-layer information interaction channel between the electrical panel and the patrol terminal.

2. The electrical equipment failure information classification interaction method of claim 1, wherein: The step of identifying whether the current device is in the running state or the maintenance state comprises reading state switching node signals of the electrical panel and upper computer soft pressboard signals; The current state of the device is determined according to the state switching node signals and the upper computer soft pressboard signals to obtain the running state or the maintenance state.

3. The electrical equipment failure information classification interaction method of claim 2, wherein: The execution of the fault classification locking strategy comprises: locking the system-level fault flags that affect the running of the device in the maintenance state, locking the device-level fault flags that do not affect the running of the system in the maintenance state, and not locking the environment-level fault flags of environmental abnormalities in the maintenance state.

4. The electrical equipment failure information classification interaction method of claim 3, wherein: The fault classification setting according to the influence degree of the fault signals comprises: determining whether the device has system-level faults, and if so, setting the system-level fault flags; determining whether the device has device-level faults, and if so, setting the device-level fault flags; Determining whether the device has environment-level faults, and if so, setting the environment-level fault flags.

5. The electrical equipment failure information classification interaction method of claim 4, wherein: The system-level fault flags are faults that affect the running of the device, including at least one of breaker refusal, protection device failure and main circuit disconnection; the device-level faults are faults that do not affect the running of the system, including at least one of auxiliary device abnormalities, indicator light faults and secondary circuit abnormalities; The environment-level fault flags are derived from an environment monitoring intelligent terminal that monitors environmental parameters of the electrical panel and outputs environmental abnormality signals, the environmental parameters including at least one of temperature, humidity, smoke, vibration, flame and sound.

6. The electrical equipment failure information classification interaction method of claim 5, wherein: The step of transmitting the set fault flags to the patrol terminal by the signaling device comprises outputting the set fault flags to the signaling device by the PLC; The signaling device establishes a communication connection with the patrol terminal in a wireless communication mode; The fault flags are sent to the patrol terminal in the form of digital signals, and the patrol terminal displays and records the fault information.

7. The electrical equipment failure information classification interaction method of claim 6, wherein: Further comprising: when the maintenance state is switched to the running state, the locking of the system-level fault flags and the device-level fault flags is released; The incoming information is re-read, and the setting state of the fault flags at all levels is updated according to the current device state.

8. An electrical equipment failure information classification interactive system based on the electrical equipment failure information classification interactive method according to any one of claims 1 to 7, characterized in that: Further comprising: an incoming module for collecting device incoming information of the electrical panel, the incoming information comprising fault signals and device state signals; A PLC module for receiving the incoming information and performing judgment to identify the running state and the maintenance state of the current device, execute the fault classification locking strategy or the fault classification setting to obtain corresponding fault flags; The signaling device is used for receiving the fault mark output by the PLC module and transmitting the fault mark to the inspection terminal. The inspection terminal is used for receiving the fault mark transmitted by the signaling device, and displaying and recording the fault information. 9.A computer device, comprising a memory and a processor, wherein the memory stores a computer program, and the computer device is characterized in that: The computer program is executed by the processor to realize the steps of the electrical equipment fault information classification interaction method in any one of claims 1-7.

10. A computer readable storage medium having stored thereon a computer program, characterized in that: The computer program is executed by the processor to realize the steps of the electrical equipment fault information classification interaction method in any one of claims 1-7.

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