Outdoor fire alarm device for transformer substation

Abstract

The invention relates to the technical field of fire safety early warning, in particular to a transformer substation outdoor fire alarm device, which comprises a controller, a plurality of sensor groups, an alarm and a communication module, and is characterized in that the plurality of sensor groups are distributed in a preset fire risk area, and each sensor group comprises a flame detector, a temperature sensor and a smoke sensor; the controller comprises the following modules: an environmental data acquisition module, which is used for detecting environmental parameters through a sensor group; the fire analysis module is used for performing fire analysis according to the environmental parameters detected by the sensor group and generating fire information when a fire analysis conclusion is met; the alarm module is used for generating early warning information when the fire information is obtained, and sending the early warning information to the alarm; and the remote communication module is used for sending the early warning information to a monitoring center through the communication module. According to the invention, the outdoor fire behavior of the transformer substation can be effectively identified and uploaded to the monitoring center for alarming in a short time, so that the reliability of equipment and power grid operation is ensured.

Description

Technical Field

[0001] The invention relates to the technical field of fire safety early warning, and in particular to an outdoor fire alarm device for a transformer substation. Background Art

[0002] In recent years, the unmanned mode of substations has been fully rolled out, but such substations are still in urgent need of introducing effective and sensitive outdoor fire awareness and monitoring tools to further adapt to the current situation of unmanned operation. At the same time, production units should also improve equipment, facilities, and systems based on actual conditions to continuously improve the fire safety level of substations. In particular, when a fire occurs in the capacitor bank arranged outdoors in the station, the capacitance will not change immediately, and the protection action and switch tripping are not timely, resulting in the inability to detect the fire in the unmanned substation in the first time, which seriously threatens the safe and stable operation of the power grid.

[0003] The fire protection system of existing substations mainly focuses on indoor fire alarms. When smoke is generated indoors in the substation and reaches the alarm threshold of the smoke detector, a signal will be sent out and transmitted to the background monitoring machine through the network. The duty officer will notify the operation and maintenance personnel to rush to the scene according to the situation and use the carbon dioxide or dry powder fire extinguishers equipped on site to extinguish the fire.

[0004] Smoke detectors are placed indoors and can only meet the indoor fire monitoring function, but cannot directly sense when a fire occurs in outdoor equipment. At the same time, fires in equipment such as capacitor banks will not immediately trip, resulting in a long time for the monitoring system to receive action information. Monitoring personnel are unable to promptly detect outdoor fires in the substation and notify operation and maintenance personnel, and may miss the best time to extinguish the fire.

[0005] On the other hand, fires in non-equipment facilities outside the substation are also blind spots for monitoring. In addition, some unmanned substations are built in relatively remote places. By the time rescue workers or fire brigades arrive at the scene, the fire has spread and fire extinguishers are insignificant, which will bring immeasurable losses. Therefore, when an outdoor fire occurs in an unmanned substation, a method is studied that can detect the fire in time and send an alarm signal to the background monitoring system, so that the on-duty personnel can respond quickly, shortening the total time of the entire outdoor fire perception and feedback process to the greatest extent, and avoiding the spread of fire. Summary of the invention

[0006] The purpose of the present invention is to provide an outdoor fire alarm device for a substation, which can effectively identify the outdoor fire situation of the substation and upload it to a monitoring center for alarm in a short time, thereby ensuring the reliability of equipment and power grid operation.

[0007] In order to achieve the above object, a substation outdoor fire alarm device is provided, including a controller, a plurality of sensor groups, an alarm and a communication module. The plurality of sensor groups are distributed in a preset fire risk area. The sensor groups include a flame detector, a temperature sensor and a smoke sensor. The controller includes the following modules:

[0008] Environmental data acquisition module: used to collect flame light source intensity information through flame detectors, detect environmental temperature information through temperature sensors, and smoke information in the environment through smoke sensors;

[0009] Fire analysis module: used to compare and analyze the flame light source intensity information, ambient temperature information and smoke information according to the corresponding preset thresholds, obtain the flame light source intensity comparison results, ambient temperature comparison results and smoke comparison results, and perform a two-out-of-three analysis based on the flame light source intensity comparison results, ambient temperature comparison results and smoke comparison results. When any two comparison results meet the fire analysis conclusion, fire information is generated;

[0010] Alarm module: used to generate early warning information when fire information is obtained, and send the early warning information to the alarm;

[0011] Remote communication module: used to send warning information to the monitoring center through the communication module.

[0012] Furthermore, it also includes a personal terminal, which is in communication with the controller, and the plurality of sensor groups are provided with different numbers, and the controller also includes the following modules:

[0013] Number analysis module: used to obtain the number information of the corresponding sensor group when generating fire information;

[0014] Map marking module: used to obtain a map of the substation outdoor, and mark several sensor groups and corresponding numbers on the map. It is also used to highlight the number information of the sensor group obtained by the number analysis module on the map when generating fire information;

[0015] The personal terminal is used to obtain and display a map.

[0016] Furthermore, it also includes a Bluetooth positioning module, which includes a number of Bluetooth beacons and a number of receiving devices distributed outside the substation. The receiving devices are installed on electrical equipment in a preset fire risk area and are communicatively connected to a controller, and the controller is communicatively connected to a positioning server; the controller also includes the following modules:

[0017] Electrical equipment positioning module: used to obtain the positioning information of the receiving device through Bluetooth beacons and positioning servers;

[0018] Map marking module: used to mark the receiving device on the map; also used to flash the receiving devices around the sensor group when generating fire information if the positioning information of the receiving device can be received;

[0019] Equipment fire damage analysis module: when generating fire information, if the positioning information of the receiving device cannot be received again within the preset time threshold, it is judged as damage and damage information is generated.

[0020] Furthermore, the controller also includes the following modules:

[0021] Firefighting material statistics module: used to obtain the firefighting material information and placement location of the substation, and mark the firefighting material information and placement location on the map through the map marking module;

[0022] Navigation module: used to generate fire material navigation routes and fire extinguishing routes according to the positioning information of the receiving device, fire material information and placement location when generating fire information, and mark the fire material navigation routes and fire extinguishing routes on the map through the map marking module.

[0023] Furthermore, the controller also includes the following modules:

[0024] Firefighting material statistical analysis module: used to obtain the storage information of firefighting materials at various locations, including the type, quantity and service life of the firefighting materials, and analyze whether the service life exceeds the maximum time threshold. If so, generate early warning information, and analyze whether the type and quantity of firefighting materials meet the minimum standards. If not, generate early warning information.

[0025] Furthermore, the controller also includes the following modules:

[0026] Geographic positioning module: used to locate the substation room through the Beidou positioning module to provide geographical coordinates, and automatically synchronize the time to ensure the accuracy of the clock.

[0027] Furthermore, it also includes control buttons and a display screen, and the controller also includes the following modules:

[0028] Human-computer interaction module: used to set the basic parameters of the flame detector, temperature sensor and smoke sensor through the control buttons, used to display the flame light source intensity information detected by the flame detector, the ambient temperature information detected by the temperature sensor and the smoke information detected by the smoke sensor through the display screen, and also used to highlight the fire information through the display screen when a fire occurs.

[0029] Principles and advantages:

[0030] 1. This solution uses the fire analysis module to compare and analyze the flame light source intensity information, ambient temperature information and smoke information according to the corresponding preset thresholds to obtain the flame light source intensity comparison results, ambient temperature comparison results and smoke comparison results, and conducts a two-out-of-three analysis on the flame light source intensity comparison results, ambient temperature comparison results and smoke comparison results, so as to accurately analyze the fire, effectively reduce the probability of misjudgment and reduce the time for discovering substation fires, improve the efficiency of removing faulty equipment, ensure the safe operation of equipment, and safeguard the stability and reliability of the power grid.

[0031] 2. Quickly identify outdoor fires at the early stage of a fire, and upload alarm signals to the monitoring center, so that on-duty monitoring personnel can take timely measures to control the fire, ensure the safety of the power grid and equipment, and effectively fill the gap in outdoor fire alarms in substations. At the same time, it can notify operation and maintenance personnel to carry out fire emergency response work as soon as possible, greatly shorten the accident handling time, improve the efficiency of accident handling, and effectively reduce the losses caused by fire, which has significant economic and social benefits.

[0032] 3. This solution uses the number analysis module and map marking module to mark several sensor groups and their corresponding numbers on the map, so that when fire information is generated, the number information of the sensor group obtained by the number analysis module is highlighted on the map, which is convenient for the on-duty monitoring personnel to understand the fire situation. At the same time, it is convenient for firefighting personnel to obtain and display the map through personal terminals, so as to find the fire location in time and take measures to control the fire, ensuring the safety of the power grid and equipment.

[0033] 4. This solution sets several receiving devices on electrical equipment that needs fire monitoring, and locates them through several Bluetooth beacons distributed outside the substation to indicate the location information of the equipment for maintenance. At the same time, the receiving device can be used as a consumable. For example, when the positioning server cannot obtain the Bluetooth positioning information of the receiving device through the Bluetooth beacon, it means that it has been burned, so that it can monitor the fire together with sensors such as flame detectors, temperature sensors and smoke sensors, timely detect substation fires and perform early warning operations to ensure the safety of the power grid and equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 The figure is a logic block diagram of an outdoor fire alarm device for a substation according to an embodiment of the present invention. DETAILED DESCRIPTION

[0035] The following is further described in detail through specific implementation methods:

[0036] Example

[0037] An outdoor fire alarm device for a substation, basically as follows Figure 1As shown, it includes a controller, control buttons, a display screen, several sensor groups, a Bluetooth positioning module, a Beidou positioning module, an alarm and a communication module, and a personal terminal. The personal terminal is a smart phone that is connected to the controller for communication. Several sensor groups are distributed in the preset fire risk area. The sensor groups include flame detectors, temperature sensors and smoke sensors. The several sensor groups are numbered differently. The Bluetooth positioning module includes several Bluetooth beacons and several receiving devices distributed outside the substation. The receiving devices are installed on electrical equipment in the preset fire risk area and are connected to the controller for communication. The controller is connected to the positioning server for communication. The alarm is a buzzer, and the communication module is a 5G communication module and / or a 4G communication module. The controller can use a single-chip microcomputer and a PLC. Based on the cost, a single-chip microcomputer can be preferred. The controller includes the following modules:

[0038] Environmental data acquisition module: used to collect flame light source intensity information through flame detectors, detect environmental temperature information through temperature sensors, and smoke information in the environment through smoke sensors; the flame detector is an H2 flame detector, used to monitor the outdoor fire source spectrum; the temperature sensor is a DS18B20 temperature sensor, and the smoke sensor is an MQ-2 smoke sensor, used to sensitively monitor the gas generated by the combustion of electrical equipment;

[0039] Fire analysis module: used to compare and analyze the flame light source intensity information, ambient temperature information and smoke information according to the corresponding preset thresholds to obtain the flame light source intensity comparison results, ambient temperature comparison results and smoke comparison results, and perform a two-out-of-three analysis based on the flame light source intensity comparison results, ambient temperature comparison results and smoke comparison results. When any two comparison results meet the analysis conclusion of the fire, fire information is generated; for example, when it is detected that the flame light source intensity comparison results and the ambient temperature comparison results both meet the fire scene, for example, when it is detected that the flame light source intensity comparison results and the smoke comparison results both meet the fire scene, for example, when it is detected that the ambient temperature comparison results and the smoke comparison results both meet the fire scene, and when the flame light source intensity comparison results, the ambient temperature comparison results and the smoke comparison results all meet the fire scene, it can be analyzed and judged that there is a fire in the current scene.

[0040] Geographic positioning module: used to locate the substation room through the Beidou positioning module to provide geographical coordinates, and automatically synchronize the time to ensure the accuracy of the clock and record the alarm time. The accuracy of the clock affects the timeliness of the fire alarm response.

[0041] Human-computer interaction module: used to set basic parameters of flame detectors, temperature sensors and smoke sensors through control buttons, such as flame light source intensity information, ambient temperature information and smoke information according to corresponding preset thresholds, detection cycles, etc. Used to display flame light source intensity information detected by the flame detector, ambient temperature information detected by the temperature sensor and smoke information detected by the smoke sensor through the display screen, and also used to highlight fire information through the display screen when a fire occurs. In other embodiments, the control buttons and the display screen can be integrated into a touch display screen.

[0042] Alarm module: used to generate early warning information when fire information is obtained, and send the early warning information to the alarm; the alarm is a 5V active buzzer module, and the circuit uses transistor 9012 to drive it. When the microcontroller control pin is at a high level, the buzzer will sound an alarm.

[0043] Remote communication module: used to send warning information to the monitoring center through the communication module. When a fire occurs, the system sends a warning message to the monitoring center remotely to achieve remote monitoring of fire warning information.

[0044] Numbering analysis module: used to obtain the numbering information of the corresponding sensor group when generating fire information; the overall land area of ​​the substation is mostly a rectangular area. Except for the monitoring equipment in the control room, the structure outside the substation mainly includes transformers, high-voltage switchgear, medium-voltage switchgear and low-voltage switchgear, etc. By setting numbering information for the sensor group, it is beneficial to detect fires and confirm the location of fires.

[0045] Map marking module: used to obtain a map of the substation outdoor, and mark several sensor groups and corresponding numbers on the map. It is also used to highlight the number information of the sensor group obtained by the number analysis module on the map when generating fire information;

[0046] Electrical equipment positioning module: used to obtain the positioning information of the receiving device through Bluetooth beacons and positioning servers;

[0047] Map marking module: used to mark the receiving device on the map; also used to flash the receiving devices around the sensor group when generating fire information if the positioning information of the receiving device can be received;

[0048] Equipment fire damage analysis module: when generating fire information, if the positioning information of the receiving device cannot be received again within the preset time threshold, it is judged as damage and damage information is generated.

[0049] Firefighting material statistics module: used to obtain the firefighting material information and placement location of the substation, and mark the firefighting material information and placement location on the map through the map marking module;

[0050] Navigation module: used to generate fire material navigation routes and fire extinguishing routes according to the positioning information of the receiving device, fire material information and placement location when generating fire information, and mark the fire material navigation routes and fire extinguishing routes on the map through the map marking module.

[0051] Firefighting material statistical analysis module: used to obtain the storage information of firefighting materials at various locations, including the type, quantity and service life of the firefighting materials, and analyze whether the service life exceeds the maximum time threshold. If so, generate early warning information, and analyze whether the type and quantity of firefighting materials meet the minimum standards. If not, generate early warning information.

[0052] When a fire occurs, the system of this solution uses a sensor group to identify flames, smoke and temperature, and processes and analyzes the identified signals. For example, when the flame light source intensity comparison results and the ambient temperature comparison results meet the fire scene, the system can analyze and determine whether there is a fire in the current scene. At the same time, an alarm is sent to the monitoring center, shortening the time to detect the fire and send out the fire alarm signal, and improving the efficiency of fire extinguishing.

[0053] At the same time, this solution sets several receiving devices on electrical equipment that needs fire monitoring, and locates them through several Bluetooth beacons distributed outside the substation to indicate the location information of the equipment for maintenance. At the same time, the receiving device can be used as a consumable. For example, when the positioning server cannot obtain the Bluetooth positioning information of the receiving device through the Bluetooth beacon, it means that it has been burned, so that it can monitor the fire together with sensors such as flame detectors, temperature sensors and smoke sensors, timely detect substation fires and perform early warning operations to ensure the safety of the power grid and equipment.

[0054] This solution uses a single-chip microcomputer as the core, and combines three fire signals: flame, smoke, and temperature. Through circuit design and program function modules, a high-sensitivity, short-delay outdoor fire alarm system that can realize on-site alarm and remote transmission of alarm signals has been built. The system can effectively identify outdoor fires, upload them to the monitoring center for alarm in a short time, and complete the goals of fire identification and short-term notification of on-duty personnel, ensuring the reliability of equipment and power grid operation, with significant economic and social benefits.

[0055] The above is only an embodiment of the present invention. The common sense such as the known specific structure and characteristics in the scheme is not described in detail here. The ordinary technicians in the relevant field know all the common technical knowledge in the technical field of the invention before the application date or priority date, can obtain all the existing technologies in the field, and have the ability to apply the conventional experimental means before that date. The ordinary technicians in the relevant field can improve and implement this scheme in combination with their own abilities under the enlightenment given by this application. Some typical known structures or known methods should not become obstacles for ordinary technicians in the relevant field to implement this application. It should be pointed out that for those skilled in the art, without departing from the structure of the present invention, several deformations and improvements can be made, which should also be regarded as the protection scope of the present invention, which will not affect the effect of the implementation of the present invention and the practicality of the patent. The protection scope required by this application shall be based on the content of its claims, and the specific implementation methods and other records in the specification can be used to interpret the content of the claims.

Claims

1. The outdoor fire alarm device of the substation is characterized by: It includes a controller, several sensor groups, an alarm and a communication module. The several sensor groups are distributed in the preset fire risk area. The sensor groups include flame detectors, temperature sensors and smoke sensors. The controller includes the following modules: Environmental data acquisition module: used to collect flame light source intensity information through flame detectors, detect environmental temperature information through temperature sensors, and smoke information in the environment through smoke sensors; Fire analysis module: used to compare and analyze the flame light source intensity information, ambient temperature information and smoke information according to the corresponding preset thresholds, obtain the flame light source intensity comparison results, ambient temperature comparison results and smoke comparison results, and perform a two-out-of-three analysis based on the flame light source intensity comparison results, ambient temperature comparison results and smoke comparison results. When any two comparison results meet the fire analysis conclusion, fire information is generated; Alarm module: used to generate early warning information when fire information is obtained, and send the early warning information to the alarm; Remote communication module: used to send warning information to the monitoring center through the communication module.

2. The outdoor fire alarm device for a substation according to claim 1, characterized in that: It also includes a personal terminal, which is in communication with the controller. The sensor groups are provided with different numbers. The controller also includes the following modules: Number analysis module: used to obtain the number information of the corresponding sensor group when generating fire information; Map marking module: used to obtain a map of the substation outdoor, and mark several sensor groups and corresponding numbers on the map. It is also used to highlight the number information of the sensor group obtained by the number analysis module on the map when generating fire information; The personal terminal is used to obtain and display a map.

3. The outdoor fire alarm device for a substation according to claim 2 is characterized in that: It also includes a Bluetooth positioning module, which includes a number of Bluetooth beacons and a number of receiving devices distributed outside the substation. The receiving devices are installed on electrical equipment in a preset fire risk area and are communicatively connected to a controller, and the controller is communicatively connected to a positioning server. The controller also includes the following modules: Electrical equipment positioning module: used to obtain the positioning information of the receiving device through Bluetooth beacons and positioning servers; Map marking module: used to mark the receiving device on the map; also used to flash and display the receiving devices around the sensor group if the positioning information of the receiving device can be received when generating fire information; Equipment fire damage analysis module: when generating fire information, if the positioning information of the receiving device cannot be received again within the preset time threshold, it is judged as damage and damage information is generated.

4. The outdoor fire alarm device for a substation according to claim 3 is characterized in that: The controller also includes the following modules: Firefighting material statistics module: used to obtain the firefighting material information and placement location of the substation, and mark the firefighting material information and placement location on the map through the map marking module; Navigation module: used to generate fire material navigation routes and fire extinguishing routes according to the positioning information of the receiving device, fire material information and placement location when generating fire information, and mark the fire material navigation routes and fire extinguishing routes on the map through the map marking module.

5. The outdoor fire alarm device for a substation according to claim 4, characterized in that: The controller also includes the following modules: Firefighting material statistical analysis module: used to obtain the storage information of firefighting materials at various locations, including the type, quantity and service life of the firefighting materials, and analyze whether the service life exceeds the maximum time threshold. If so, generate early warning information, and analyze whether the type and quantity of firefighting materials meet the minimum standards. If not, generate early warning information.

6. The outdoor fire alarm device for a substation according to claim 1, characterized in that: It also includes a Beidou positioning module, which is electrically connected to the controller. The controller also includes the following modules: Geographic positioning module: used to locate the substation room through the Beidou positioning module to provide geographical coordinates, and automatically synchronize the time to ensure the accuracy of the clock.

7. The outdoor fire alarm device for a substation according to claim 6, characterized in that: It also includes control buttons and a display screen, and the controller also includes the following modules: Human-computer interaction module: used to set the basic parameters of the flame detector, temperature sensor and smoke sensor through the control buttons, used to display the flame light source intensity information detected by the flame detector, the ambient temperature information detected by the temperature sensor and the smoke information detected by the smoke sensor through the display screen, and also used to highlight the fire information through the display screen when a fire occurs.

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