Substation multi-key classification management emergency device and control method

Abstract

The invention discloses a transformer substation multi-key classification management emergency device and a control method, and relates to the technical field of transformer substation emergency management. The device comprises a main control unit, a classified storage unit, a dual-mode unlocking unit, an emergency auxiliary unit, an environment adaptation unit and a power supply unit. The classified storage unit is used for dividing independent key partitions according to equipment types to realize accurate classification of keys; the dual-mode unlocking unit is combined with electronic identification and a mechanical master lock, and meets the requirements of normal authorization and emergency forced unlocking; the emergency auxiliary unit provides high-brightness emergency lighting and USB power supply, and adapts to night and power-off scenes; the environment adaptation unit guarantees long-term stable operation of the device through temperature and humidity monitoring and active ventilation; and the power supply unit realizes multi-voltage-level stable power supply. The problems that an existing key management device is disordered in classification, low in unlocking reliability, poor in emergency adaptability and the like can be effectively solved, the key taking efficiency and safety during transformer substation fault emergency repair are greatly improved, and the service life of the device is prolonged.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of substation emergency management, and in particular relates to a substation multi-key classification management emergency device and a control method. BACKGROUND

[0002] A substation is a key place for voltage transformation and power distribution in a power system, and it internally covers various important devices such as high-voltage cabinets, transformers, capacitors, circuit breakers, etc. To ensure safe operation and authorized operation, these devices are usually equipped with special keys and need to be managed uniformly. In the event of a sudden device failure requiring emergency repair, the efficiency and reliability of key management directly affect the speed of power grid recovery and the safety of operating personnel.

[0003] At present, the key management devices commonly used in substations are mostly traditional mechanical key cabinets or single-function electronic key cabinets, which have obvious shortcomings in emergency repair scenarios. First, the key management method is extensive. The existing key cabinet lacks effective classification structure, and keys for different devices and different voltage levels are mixed and stored, and the identification is unclear. Repair personnel need to spend a lot of time looking for specific keys in an emergency, which is not only inefficient, but also risks misoperation due to mis-taking keys.

[0004] Secondly, the unlocking reliability has shortcomings. Some electronic key cabinets rely on single electronic authentication methods such as fingerprints or passwords. However, in the event of a power outage during a substation failure, or in the extreme case of electronic system failure, the entire device will not be able to be opened, resulting in the inability to carry out repair work and posing a significant safety hazard. In addition, the existing devices lack the ability to cope with night repair, device power supply and other emergency needs, and also lack the ability to actively adapt to adverse environments such as humidity and high temperature in the cabinet, affecting the long-term preservation of the keys and the service life of the device. SUMMARY

[0005] The purpose of the embodiments of the present application is to provide a substation multi-key classification management emergency device and a control method. To solve the problems of key classification confusion, electronic system failure unlocking, and lack of emergency lighting and environmental adaptation ability of the existing substation key management device in emergency repair.

[0006] To achieve the above purpose, the following technical solutions are adopted in the present application: In a first aspect, a substation multi-key classification management emergency device is provided, comprising: a master control unit; a classification storage unit connected to the master control unit, which is internally provided with a plurality of mutually independent key subareas, each of which is used to store keys of a specific category and is provided with an independent electronic lock; A dual-mode unlocking unit connected with the main control unit, comprising an electronic identification module for authorized unlocking in normal mode and a mechanical master lock mechanism for forced unlocking in emergency mode; An emergency assistance unit connected with the main control unit, comprising an emergency lighting module and at least one USB charging interface; An environment adaptation unit connected with the main control unit, comprising a temperature and humidity sensor for detecting the environment in the cabinet and a ventilation device controlled by the main control unit; A power supply unit for powering the main control unit, the classified storage unit, the dual-mode unlocking unit, the emergency assistance unit and the environment adaptation unit.

[0007] In a possible implementation, the plurality of key partitions of the classified storage unit are divided according to substation equipment types, including at least two of high-voltage cabinet partition, transformer partition, capacitor partition, circuit breaker partition and access control partition; each key partition is provided with a label slot for identifying equipment number and / or voltage level.

[0008] In a possible implementation, the mechanical master lock mechanism comprises a master lock and a linkage transmission component; when the master lock is opened by a special emergency key, the mechanical locking state of all key partitions is simultaneously released through the linkage transmission component.

[0009] In a possible implementation, the mechanical transmission efficiency of the linkage transmission component is greater than or equal to 90%.

[0010] In a possible implementation, the emergency lighting module is an LED emergency light with an illuminance of not less than 300 lux and a continuous running time of not less than 2 hours after power failure; The emergency lighting module supports an automatic opening mode linked with the cabinet door and a manual button control mode.

[0011] In a possible implementation, the environment adaptation unit further comprises a cabinet body made of moisture-proof and heat-insulating material; the main control unit is pre-set with a temperature and humidity threshold, and when the data detected by the temperature and humidity sensor exceeds the threshold, the main control unit controls the ventilation device to start.

[0012] In a possible implementation, the power supply unit comprises a K7805 module for boosting and stabilizing the input voltage to 5V and a linear voltage stabilizer for converting the 5V voltage to 3.3V.

[0013] In a possible implementation, the power supply unit comprises a K7805 module for boosting and stabilizing the input voltage to 5V and a linear voltage stabilizer for converting the 5V voltage to 3.3V.

[0013] In a possible implementation, the power supply unit comprises a K7805 module for boosting and stabilizing the input voltage to 5V and a linear voltage stabilizer for converting the 5V voltage to 3.3V. A normal unlocking step: the operator performs identity authentication through the electronic identification module, and after the authentication is passed, the main control unit controls the electronic lock of the target key partition to unlock; Emergency unlocking step: when the electronic system fails, the operator uses a special emergency key to open the mechanical master lock mechanism, and synchronously unlocks all key subareas through linkage; Environment regulation step: real-time monitoring of the environmental data in the cabinet through the temperature and humidity sensor, and automatically starting the ventilation device to regulate when the environmental data exceeds the preset threshold; Emergency assistance step: starting the emergency lighting module to provide lighting under insufficient illumination conditions, and supplying power to external equipment through the USB charging interface.

[0014] In a possible implementation, in the normal unlocking step, the emergency lighting module is automatically triggered to light up when the cabinet door is opened, and is automatically turned off after a delay when the cabinet door is closed.

[0015] In a possible implementation, in the environment regulation step, the preset humidity threshold is 85% RH, and the preset temperature threshold is 60 DEG C.

[0016] Compared with the prior art, the application has the following beneficial effects: The substation multi-key classification management emergency device provided by the application solves the problems of classification confusion of the existing substation key management device, inability to unlock when the electronic system fails, no emergency lighting, and poor environmental adaptation capability, and effectively solves the problems of classification confusion of the existing substation key management device, inability to unlock when the electronic system fails, no emergency lighting, and poor environmental adaptation capability. Classification storage makes key searching more efficient, dual-mode unlocking ensures that keys can be used without obstruction in emergency scenarios, the emergency assistance unit meets the night operation and equipment power supply requirements, the environmental adaptation unit and the stable power supply unit prolong the service life of the device, and the overall efficiency, safety, and reliability of key management during substation fault repair are improved.

[0017] In a possible implementation, through the cooperation of the mechanical master lock and the linkage transmission component, when the electronic system fails, it is not necessary to unlock each key subarea one by one, and the repair personnel only need to open one master lock to quickly obtain all subarea keys, greatly shortening the emergency unlocking time, ensuring efficient progress of substation fault repair work, avoiding delay of the repair opportunity due to unlocking one by one, and improving unlocking safety through the cooperation of the mechanical master lock and the linkage transmission component.

[0018] In a possible implementation, through the cooperation of the moisture-proof and heat-insulating cabinet body, temperature and humidity monitoring, and active ventilation, the external harsh environment can be effectively isolated, the temperature and humidity in the cabinet can be real-time regulated, the keys can be prevented from rusting due to moisture, and the electronic components can be prevented from failing due to high temperature, the service life of the keys and the device is prolonged, the automatic regulation mode does not need manual intervention, the operation and maintenance workload is reduced, the device is ensured to be in a stable and suitable operating environment for a long time, and the overall reliability of the device is improved.

[0019] The application discloses an emergency control method for a substation key, which comprehensively covers normal and emergency scenes of substation key management, and normal unlocking steps ensure operation safety and accuracy through fingerprint authorization to prevent unauthorized personnel from taking the key; emergency unlocking steps solve the problem of key taking when the electronic system fails, and guarantee uninterrupted repair work; environment control steps maintain a suitable operation environment of the device and prolong the service life; emergency auxiliary steps meet the needs of low-light operation and equipment emergency power supply, the whole method process is clear and convenient to operate, greatly improves the key management efficiency and reliability, saves valuable time for substation fault repair, and reduces power grid failure loss. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 A whole structure block diagram of a substation multi-key classification management emergency device is provided for the application; Figure 2 A main control unit circuit diagram is provided for the application; Figure 3 A classification storage unit structure diagram is provided for the application. Figure 4 A power supply unit circuit diagram is provided for the application. DETAILED DESCRIPTION

[0021] In the following, only certain exemplary embodiments are simply described. As those skilled in the art can recognize, the described embodiments can be modified in various different ways without departing from the spirit or scope. Therefore, the drawings and the description are considered to be essentially exemplary rather than limiting.

[0022] In the description of the application, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the purpose of facilitating the description of the application and simplifying the description, and do not indicate or imply that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the application.

[0023] In addition, the terms "first", "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined with "first", "second" can explicitly or implicitly include one or more of the features. In the description of the application, the meaning of "multiple" is two or more, unless otherwise specifically limited.

[0024] In this application, unless specifically defined otherwise, the terms "mounting", "connected", "connection", "fixed", and the like, should be construed as broadly as possible, for example, can be fixed connection, can also be detachable connection, or integral; can be mechanical connection, can also be electrical connection, can also be communication; can be directly connected, can also be indirectly connected through an intermediate medium, can be the internal communication of two elements or the interaction relationship of two elements. For those skilled in the art, the specific meaning of the above terms in this application can be understood according to the specific circumstances.

[0025] In this application, unless specifically defined otherwise, the first feature "on" or "under" the second feature can include that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, the first feature "on", "above" and "above" the second feature includes that the first feature is directly above and obliquely above the second feature, or only indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature "below", "below" and "below" the second feature includes that the first feature is directly above and obliquely above the second feature, or only indicates that the horizontal height of the first feature is less than that of the second feature.

[0026] The technical solutions in the embodiments of the present application will be described clearly and completely in the following with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, not all. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor are within the scope of protection of the present application.

[0027] As shown in Figure 1 , Figure 2 and Figure 3 , the substation multi-key classification management emergency device can include a master control unit, a classification storage unit, a dual-mode unlocking unit, an emergency auxiliary unit, an environment adaptation unit, and a power supply unit.

[0028] The classification storage unit is connected with the master control unit, and a plurality of mutually independent key partitions are arranged inside the classification storage unit. Each key partition is used to store keys of a specific category and is provided with an independent electronic lock.

[0029] The dual-mode unlocking unit is connected with the master control unit and includes an electronic identification module for authorized unlocking in normal mode and a mechanical total lock mechanism for forced unlocking in emergency mode.

[0030] The emergency auxiliary unit is connected with the master control unit and includes an emergency lighting module and at least one USB charging interface.

[0031] The environmental adaptation unit is connected to the main control unit and includes a temperature and humidity sensor for detecting the environment inside the cabinet and a ventilation device controlled by the main control unit.

[0032] This power supply unit is used to supply power to the main control unit, the classification storage unit, the dual-mode unlocking unit, the emergency auxiliary unit, and the environmental adaptation unit.

[0033] Optionally, the main control unit uses an STM32F103RET6 as the MCU. This MCU includes modules for power supply, reset, clock, buttons, serial port, USB to serial port, crystal oscillator, LED, I2C, SPI, and power management. It is responsible for receiving and processing input and output information from the classified storage unit, dual-mode unlocking unit, emergency auxiliary unit, and environmental adaptation unit. Pins 57, 58, and 59 of the main chip are connected to sensors to detect data thresholds.

[0034] This classified storage unit is connected to the main control unit. Internally, it is divided into 5 independent key partitions according to equipment type (high voltage cabinet, transformer, capacitor, circuit breaker, access control). Each partition is labeled with the equipment number and voltage level and is equipped with an independent electronic lock.

[0035] The dual-mode unlocking unit is connected to the main control unit. In normal mode, it uses a fingerprint recognition module with a recognition rate of ≥99.5% to authorize unlocking. In emergency mode, it uses a special emergency key to open the plum blossom-shaped mechanical master lock mechanism located on the top of the cabinet.

[0036] The emergency auxiliary unit is connected to the main control unit and includes an LED emergency light with an illumination of ≥300 lux and a battery life of ≥2 hours, as well as a USB charging interface with an output of 5V / 2A. It supports door linkage and manual control.

[0037] The environmental adaptation unit is connected to the main control unit and is made of moisture-proof and heat-insulating materials. Inside, it is equipped with temperature and humidity sensors with a measurement range of -20℃ to 80℃ and 0 to 100%RH, as well as a ventilation fan controlled by the main control unit with a wind speed of ≥2m / s.

[0038] This power supply unit achieves power conversion through a dual-module boost + regulation. The input voltage is boosted to approximately 5V by a K7805, and then stabilized at 3.3V by an AMS1117-3.3 linear regulator to power each unit. The input power is filtered by an 82μH inductor, a 470μF / 30V electrolytic capacitor, and a 10μF / 50V electrolytic capacitor. A filter capacitor is provided at the output to ensure power purity, and analog ground (AGND) and digital ground (GND) are distinguished to reduce interference.

[0039] In this embodiment, the collaborative work of each unit effectively solves the problems of chaotic classification, inability to unlock in case of electronic system failure, lack of emergency lighting, and poor environmental adaptability of existing substation key management devices. Categorized storage makes key retrieval more efficient, dual-mode unlocking ensures that key access is not hindered in emergency scenarios, the emergency auxiliary unit meets the needs of nighttime operation and equipment power supply, and the environmental adaptability unit and stable power supply unit extend the service life of the device, thereby improving the efficiency, security, and reliability of key management during substation fault repair.

[0040] In one possible embodiment, the multiple key partitions of the classified storage unit are divided according to the type of substation equipment, including at least two of the following: high-voltage cabinet partition, transformer partition, capacitor partition, circuit breaker partition, and access control partition; each key partition is provided with a label slot for identifying the equipment number and / or voltage level.

[0041] Optionally, the multiple key partitions of this classified storage unit are strictly divided according to the substation equipment type, specifically including high-voltage cabinet partition, transformer partition, capacitor partition, circuit breaker partition and access control partition; each key partition has a label slot on the outer panel, in which a label with the corresponding equipment number (such as "high-voltage cabinet-01" "transformer-T2") and voltage level (such as "10kV" "35kV") is placed, and each partition is uniformly designed to be 15cm×10cm×8cm in size, and a key hook is provided inside for neatly storing keys.

[0042] In this embodiment, by clearly dividing the partitions according to the device type and labeling key information, the mixed storage of keys for different devices is avoided. Repair personnel can quickly locate the required key partition, greatly shortening the key search time. At the same time, the standardized partition size and built-in hooks improve the neatness of key storage, reduce the risk of accidental key removal and misoperation, and further improve the efficiency and security of key management.

[0043] In one possible embodiment, the mechanical master lock mechanism includes a master lock and a linkage transmission component; when the master lock is opened by a dedicated emergency key, the linkage transmission component simultaneously releases the mechanical locking state of all key zones.

[0044] Optionally, the mechanical master lock mechanism consists of a quincunx-shaped master lock located at the top of the cabinet and a linkage transmission component; when the emergency repair personnel use a special emergency key to rotate clockwise to open the quincunx-shaped master lock, the master lock drives the linkage rod to move, and the linkage rod releases the mechanical locking state of all key zones simultaneously through the mechanical transmission structure, realizing the synchronous unlocking of all zones.

[0045] In this embodiment, by cooperating with the mechanical master lock and the linkage transmission components, in the event of an electronic system failure, it is not necessary to unlock each key zone one by one. The repair personnel only need to open one master lock to quickly obtain all zone keys, which greatly shortens the emergency unlocking time, ensures the efficient progress of substation fault repair work, and avoids delays in repair due to unlocking one by one. At the same time, the combination of the plum blossom-shaped master lock and the special key improves the unlocking security and prevents unauthorized personnel from operating it by mistake.

[0046] In one possible embodiment, the mechanical transmission efficiency of the linkage transmission component is not less than 90%.

[0047] Specifically, the linkage transmission component is made of high-strength stainless steel. The diameter, length and connection structure of the linkage rod have been mechanically designed and tested to ensure that the power transmission loss is strictly controlled when the mechanical master lock is opened. Actual testing has verified that the mechanical transmission efficiency of the linkage transmission component is stably maintained at ≥90%, and after multiple opening and closing cycle tests, the transmission component has no obvious deformation or jamming.

[0048] In this embodiment, by optimizing the material and structural design of the linkage transmission components, the mechanical transmission efficiency is ensured to be no less than 90%, ensuring that all key zones can be reliably and synchronously unlocked during emergency unlocking, avoiding the problem that some zones cannot be unlocked due to low transmission efficiency. At the same time, high-strength materials improve the durability of the transmission components, reduce the frequency and cost of later maintenance, extend the service life of the mechanical master lock mechanism, and ensure the long-term stable availability of the emergency unlocking function.

[0049] In one possible embodiment, the emergency lighting module is an LED emergency light with an illuminance of not less than 300 lux and a battery life of not less than 2 hours after a power outage. The emergency lighting module supports an automatic opening mode linked to the cabinet door and a manual button control mode.

[0050] Optionally, the emergency lighting module uses an LED emergency light. Through optical design and power matching, it ensures that its illuminance reaches ≥300 lux. The LED emergency light is powered by a built-in lithium battery, and the test shows that the battery life is ≥2 hours in the power outage state.

[0051] The control circuit of the emergency lighting module is connected to the cabinet door limit switch to realize the door linkage mode. When the cabinet door is opened, the limit switch triggers the LED emergency light to light up automatically. After the cabinet door is closed, the LED emergency light turns off after a 30-second delay. At the same time, a manual control button is set on the front of the cabinet. Pressing the button can manually turn the LED emergency light on or off.

[0052] In this embodiment, the LED emergency light has high illuminance and long battery life, which can fully meet the key retrieval needs of substations at night or in dim environments. The door linkage mode eliminates the need for manual lighting, simplifies the operation process, and avoids operational errors caused by forgetting to turn on the lighting during emergency repairs. The delayed shutdown design saves battery power, and the manual control button provides a flexible control method for special lighting scenarios, comprehensively solving the problem of inconvenient operation of existing devices at night and ensuring the safety and efficiency of emergency repair personnel.

[0053] In one possible embodiment, the environmental adaptation unit further includes a cabinet made of moisture-proof and heat-insulating material; the main control unit has a preset temperature and humidity threshold, and when the data detected by the temperature and humidity sensor exceeds the threshold, the main control unit controls the ventilation device to start.

[0054] Optionally, the cabinet of this environmental adaptation unit is made of moisture-proof and heat-insulating materials, effectively blocking the influence of external humidity and high temperature on the cabinet interior; the temperature and humidity sensor is installed inside the cabinet away from the ventilation fan outlet to avoid airflow interference with measurement accuracy, and collects the temperature and humidity data inside the cabinet in real time and transmits it to the main control unit; the main control unit presets temperature and humidity thresholds, and when the data detected by the temperature and humidity sensor exceeds the preset threshold, the main control unit immediately outputs a control signal to start the ventilation fan for ventilation adjustment until the temperature and humidity inside the cabinet drop to within the threshold range, at which point the ventilation fan automatically stops.

[0055] In this embodiment, the combined effect of moisture-proof and heat-insulating cabinet, temperature and humidity monitoring, and active ventilation can effectively isolate the harsh external environment, regulate the temperature and humidity inside the cabinet in real time, prevent keys from rusting due to moisture and electronic components from failing due to high temperature, extend the service life of keys and devices, and at the same time, the automatic control mode does not require manual intervention, reducing maintenance workload, ensuring that the device is in a stable and suitable operating environment for a long time, and improving the overall reliability of the device.

[0056] In one possible embodiment, such as Figure 4 As shown, the core controller of the main control unit is an STM32F103RET6. The power supply unit includes a K7805 module that boosts and regulates the input voltage to 5V and an AMS1117-3.3 linear regulator that converts the 5V voltage to 3.3V.

[0057] Specifically, the core controller of this main control unit is an STM32F103RET6. The VCC_3V3 pin of this controller is connected to a 3.3V power supply. The LDO (low dropout linear regulator) is responsible for power filtering and stabilization. The XTAL_32M (32MHz crystal oscillator) is connected to the XPD_XTAL and XPD_RF pins of the controller. The bypass capacitor of the crystal oscillator ensures the stability of the clock signal. The RXD and TXD pins are used for serial communication with external devices, and the SDA and SCL pins are used for I2C device connection.

[0058] The power supply unit's input interface connects to an external power source. After being filtered by an 82μH inductor, a 470μF / 30V electrolytic capacitor, and a 10μF / 50V electrolytic capacitor, the input power is fed into the K7805 module, which boosts the voltage to approximately 5V. Part of this 5V voltage directly powers components requiring 5V, while the other part is fed into an AMS1117-3.3 linear regulator to be converted to 3.3V, powering the STM32F103RET6 controller and other components requiring 3.3V. The power supply unit distinguishes between AGND and DGND and ensures a good connection, reducing signal interference.

[0059] In this embodiment, the stable STM32F103RET6 is selected as the main control core to ensure the accuracy and timeliness of data processing and control command output of each unit. The power supply unit achieves stable output of 5V and 3.3V dual voltage levels through multi-stage processing of "filtering + boost + regulation" to adapt to the power supply requirements of different components. The reasonable design of analog ground and digital ground reduces the impact of power supply interference on precision components, ensures the stable operation of the main control unit and the electronic systems of each peripheral unit, avoids functional failure due to unstable power supply or signal interference, and provides core support for the overall reliable operation of the device.

[0060] In one possible embodiment, a substation key emergency control method is provided, comprising the following steps: Normal unlocking procedure: The operator presses their finger on the fingerprint recognition module of the dual-mode unlocking unit. The module collects the fingerprint and compares it with the pre-stored authorized fingerprint. After the comparison is successful, the fingerprint recognition module sends an authorization signal to the main control unit. After receiving the signal, the main control unit controls the electronic lock of the target key zone to unlock.

[0061] Emergency unlocking procedure: When the electronic system malfunctions, such as the fingerprint recognition module failing or a power outage causing the electronic lock to malfunction, the operator uses a special emergency key to insert into the mechanical master lock at the top of the cabinet, rotates to open the master lock, and simultaneously unlocks all key compartments through the linkage transmission components.

[0062] Environmental control steps: Temperature and humidity sensors collect temperature and humidity data inside the cabinet in real time and transmit the data to the main control unit at regular intervals. The main control unit compares the received data with preset thresholds. When the data exceeds the threshold, the ventilation fan is automatically activated to adjust the environment inside the cabinet until the data drops below the threshold, at which point the ventilation fan is turned off.

[0063] Emergency auxiliary procedures: In the event of night or insufficient light, the LED emergency light will automatically turn on when the cabinet door is opened. If additional lighting is needed or lighting is required after the cabinet door is closed, the LED emergency light can be turned on manually by pressing the control button. When the power of the equipment used for emergency repair is insufficient, the equipment can be temporarily charged through the USB charging port.

[0064] In this embodiment, the method comprehensively covers both normal and emergency scenarios for substation key management. The normal unlocking step ensures operational security and accuracy through fingerprint authorization, preventing unauthorized personnel from accessing the key. The emergency unlocking step solves the key access problem during electronic system failures, ensuring uninterrupted repair work. The environmental control step maintains a suitable operating environment for the device, extending its service life. The emergency auxiliary step meets the needs of low-light operation and emergency power supply for equipment. The entire method has a clear process and is easy to operate, significantly improving the efficiency and reliability of key management, saving valuable time for substation fault repair, and reducing power grid failure losses.

[0065] In one possible embodiment, during the normal unlocking process, the emergency lighting module is automatically triggered to light up when the cabinet door is opened, and then turns off after a delay after the cabinet door is closed.

[0066] Specifically, a limit switch is installed on the inside of the cabinet door, and the signal output terminal of the limit switch is connected to the GPIO pin of the main control unit. When the operator completes identity authentication through fingerprint recognition, the main control unit controls the electronic lock of the target key zone to unlock. When the operator opens the cabinet door, the state of the limit switch changes, triggering the main control unit to output a control signal, causing the LED emergency light of the emergency lighting module to light up immediately. When the operator takes the key and closes the cabinet door, the limit switch returns to its initial state. After the main control unit detects this change, it starts a 30-second delay timer. After the timer expires, it controls the LED emergency light to turn off. If the cabinet door is opened again during the delay period, the timer resets, and the LED emergency light remains lit.

[0067] In this embodiment, the automatic on / off and delayed off of the lighting are achieved through the linkage control of the cabinet door limit switch and the emergency lighting module. This eliminates the need for emergency repair personnel to manually control the lighting during emergency operations, simplifies the operation process, and avoids the inconvenience caused by neglecting to turn on the lighting due to focusing on retrieving the key. The delayed off design not only ensures the lighting needs after the operation is completed, but also effectively saves the battery power of the LED emergency light, extends the lighting duration after a power outage, and further improves the convenience and reliability of operation in emergency scenarios.

[0068] In one possible embodiment, the preset humidity threshold is 85%RH and the preset temperature threshold is 60°C in the environmental control step.

[0069] Specifically, the main control unit has preset temperature and humidity thresholds, with a humidity threshold of 85%RH and a temperature threshold of 60℃.

[0070] The temperature and humidity sensor collects humidity and temperature data inside the cabinet at a fixed frequency and immediately sends the data to the main control unit. The main control unit compares the received actual humidity value with 85%RH and the actual temperature value with 60℃. If the actual humidity is greater than 85%RH or the actual temperature is greater than 60℃, it immediately sends a start command to the ventilation device, and the ventilation fan runs at a speed of ≥2m / s. If the actual humidity is less than or equal to 85%RH and the actual temperature is less than or equal to 60℃, it sends a stop command, and the ventilation fan turns off. If the temperature and humidity continue to exceed the limits, the main control unit can issue a warning signal through a preset method.

[0071] In this embodiment, by clearly setting thresholds of 85%RH humidity and 60℃ temperature, a precise and unified judgment standard is provided for the control of the cabinet environment. This avoids the ventilation fan from being started incorrectly or delayed due to ambiguity in the thresholds, ensuring timely adjustment when the cabinet environment is about to affect the performance of the key and the device. At the same time, the accurate threshold judgment and the rapid response of the ventilation fan can efficiently restore the cabinet environment to a suitable range, minimizing the damage of humidity and high temperature to the key and electronic components, further extending the service life of the device, ensuring the long-term stable operation of the device, and reducing operation and maintenance costs.

[0072] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them; although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications to the technical solutions described in the foregoing embodiments, or equivalent substitutions for some or all of the technical features, do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. A multi-key classification management emergency device for substations, characterized in that, include: Main control unit; A categorized storage unit, connected to the main control unit, has multiple independent key partitions inside, each of which is used to store a specific type of key and is equipped with an independent electronic lock; A dual-mode unlocking unit, connected to the main control unit, includes an electronic identification module for authorized unlocking in normal mode and a mechanical master lock mechanism for forced unlocking in emergency mode. An emergency auxiliary unit, connected to the main control unit, includes an emergency lighting module and at least one USB charging port; An environmental adaptation unit, connected to the main control unit, includes a temperature and humidity sensor for detecting the environment inside the cabinet and a ventilation device controlled by the main control unit. The power supply unit is used to supply power to the main control unit, the classification storage unit, the dual-mode unlocking unit, the emergency auxiliary unit, and the environmental adaptation unit.

2. The substation multi-key classification management emergency device according to claim 1, characterized in that, The classified storage unit has multiple key partitions divided according to the type of substation equipment, including at least two of the following: high-voltage cabinet partition, transformer partition, capacitor partition, circuit breaker partition, and access control partition; Each of the key compartments is provided with a label slot for identifying the device number and / or voltage level.

3. The substation multi-key classification management emergency device according to claim 1, characterized in that, The mechanical master lock mechanism includes a master lock and a linkage transmission component; when the master lock is opened by a dedicated emergency key, the mechanical locking state of all key zones is simultaneously released through the linkage transmission component.

4. The substation multi-key classification management emergency device according to claim 3, characterized in that, The mechanical transmission efficiency of the linkage transmission component is greater than or equal to 90%.

5. The substation multi-key classification management emergency device according to claim 1, characterized in that, The emergency lighting module is an LED emergency light with an illuminance of not less than 300 lux and a battery life of not less than 2 hours after a power outage; The emergency lighting module supports both an automatic opening mode linked to the cabinet door and a manual button control mode.

6. The substation multi-key classification management emergency device according to claim 1, characterized in that, The environmental adaptation unit also includes a cabinet made of moisture-proof and heat-insulating materials; The main control unit has preset temperature and humidity thresholds. When the data detected by the temperature and humidity sensor exceeds the threshold, the main control unit controls the ventilation device to start.

7. The substation multi-key classification management emergency device according to claim 1, characterized in that, The power supply unit includes a K7805 module that boosts and regulates the input voltage to 5V and a linear regulator that converts the 5V voltage to 3.3V.

8. A substation key emergency control method based on the device according to any one of claims 1-7, characterized in that, Includes the following steps: Normal unlocking procedure: The operator authenticates their identity through the electronic identification module. After successful authentication, the main control unit controls the electronic lock of the target key zone to unlock. Emergency unlocking procedure: When the electronic system malfunctions, the operator uses a special emergency key to open the mechanical master lock mechanism, and unlocks all key zones simultaneously through a linkage mechanism; Environmental control steps: The temperature and humidity sensor monitors the environmental data inside the cabinet in real time. When the environmental data exceeds the preset threshold, the ventilation device is automatically activated for adjustment. Emergency assistance steps: In the event of insufficient light, activate the emergency lighting module to provide illumination; and power external devices through the USB charging interface.

9. The method according to claim 8, characterized in that, During the normal unlocking process, when the cabinet door is opened, the emergency lighting module is automatically triggered to turn on and then turns off after a delay when the cabinet door is closed.

10. The method according to claim 8, characterized in that, In the environmental control steps, the preset humidity threshold is 85%RH and the preset temperature threshold is 60℃.

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