Prefabricated cabin control system, prefabricated cabin and prefabricated cabin type substation

Abstract

The application provides a prefabricated cabin control system, a prefabricated cabin and a prefabricated cabin type transformer substation, and the prefabricated cabin control system comprises a controller, a display, a prefabricated cabin sensor, a transformer temperature measuring device, a switch sensor, a relay and a control device; the first end of the controller is connected with the display through a wire harness; the display is used for visualizing the health state of the control device; the prefabricated cabin sensor is connected with the second end of the controller through a wire harness; the third end of the controller is connected with the transformer temperature measuring device through a wire harness, and the transformer temperature measuring device is used for monitoring the temperature of the transformer; the first end of the switch sensor is connected with the fourth end of the controller through a wire harness, and the second end of the switch sensor is connected with the first end of the control device through a wire harness; the first end of the relay is connected with the fifth end of the controller through a wire harness, and the second end of the relay is connected with the second end of the control device through a wire harness.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of transformer substations, and in particular to a prefabricated cabin control system, a prefabricated cabin and a prefabricated cabin type transformer substation. BACKGROUND

[0002] The prefabricated cabin is an outdoor intelligent transformer substation based on the core concept of "standard distribution type". The adoption of the prefabricated cabin body structure becomes an important measure for the construction of the secondary equipment carrier of the intelligent transformer substation. The cabin is configured with auxiliary facilities such as fire fighting, security, heating, lighting and communication according to the needs, and the environment meets the requirements of the transformer substation operation conditions and the on-site operation of the transformer substation operation and debugging personnel, that is, the prefabricated cabin needs to isolate the influence of external environmental factors on the equipment in the cabin.

[0003] In the prior art, the prefabricated cabin type transformer substation is usually provided with a transformer fan, a prefabricated cabin fan and a heater and the like for controlling the environmental parameters in the prefabricated cabin, and these devices are controlled by a relay or a single set of programmable logic controller (PLC), that is, the control is completed by the control object alone. When a fault occurs in one of the devices, the transformer needs to be powered off for maintenance.

[0004] It can be seen that the prior art has the problem of poor control effect on the prefabricated cabin. SUMMARY

[0005] The purpose of the embodiments of the present application is to provide a prefabricated cabin control system, a prefabricated cabin and a prefabricated cabin type transformer substation, which solve the problem of poor control effect on the prefabricated cabin.

[0006] In a first aspect, the embodiments of the present application provide a prefabricated cabin control system, comprising: a controller, a display, a prefabricated cabin sensor, a transformer temperature measuring device, a switch sensor, a relay and a control device;

[0007] A first end of the controller is connected to the display through a wire harness, and the controller is used to create a double set of virtual programmable logic controllers (PLCs);

[0008] The display is used to visualize the health status of the control device;

[0009] The prefabricated cabin sensor is connected to a second end of the controller through a wire harness, and the prefabricated cabin sensor is used to monitor the environmental parameters in the prefabricated cabin;

[0010] The transformer temperature measuring device is connected to a third end of the controller through a wire harness, and the transformer temperature measuring device is used to monitor the temperature of the transformer;

[0011] The first end of the switch sensor is connected to the fourth end of the controller through a wire harness, and the second end of the switch sensor is connected to the first end of the control device through a wire harness, and the switch sensor is used for monitoring the start-stop state of the control device;

[0012] The first end of the relay is connected to the fifth end of the controller through a wire harness, and the second end of the relay is connected to the second end of the control device through a wire harness, and the relay is used for converting a circuit to control the opening and closing of the control device, and the control device is used for adjusting the temperature in the prefabricated cabin and the transformer.

[0013] Optionally, the prefabricated cabin control system further comprises an input-output coupler;

[0014] The first end of the input-output coupler is connected to the sixth end of the controller through a first bus;

[0015] The second end of the input-output coupler is connected to the prefabricated cabin sensor, the transformer temperature measuring device, the first end of the switch sensor and the first end of the relay through a second bus respectively through a wire harness.

[0016] Optionally, the control device comprises a transformer fan, a prefabricated cabin fan and a prefabricated cabin heater;

[0017] The transformer fan is connected to the second bus through a wire harness and connected to the input-output coupler, and the transformer fan is used for injecting air into the transformer area or discharging air in the transformer area to the outside;

[0018] The prefabricated cabin fan is connected to the second bus through a wire harness and connected to the input-output coupler, and the prefabricated cabin fan is used for injecting air into the prefabricated cabin or discharging air in the prefabricated cabin to the outside;

[0019] The prefabricated cabin heater is connected to the second bus through a wire harness and connected to the input-output coupler, and the prefabricated cabin heater is used for heating the air in the prefabricated cabin.

[0020] Optionally, the control device comprises M transformer fans, N prefabricated cabin fans and L prefabricated cabin heaters, and M, N and L are positive integers;

[0021] The M transformer fans are arranged in parallel with each other, and the M transformer fans are connected to the second bus through a wire harness and connected to the input-output coupler;

[0022] The N prefabricated cabin fans are arranged in parallel with each other, and the N prefabricated cabin fans are connected to the second bus through a wire harness and connected to the input-output coupler;

[0023] The L prefabricated cabin heaters are connected in parallel with each other, and are connected to the second bus through a wire harness and connected with the input-output coupler.

[0024] Optionally, the prefabricated cabin sensors include a temperature sensor, a differential pressure sensor, and a humidity sensor.

[0025] The temperature sensor is connected to the second bus through a wire harness and connected with the input-output coupler, and is configured to monitor indoor temperature of the prefabricated cabin.

[0026] The humidity sensor is connected to the second bus through a wire harness and connected with the input-output coupler, and is configured to monitor indoor humidity of the prefabricated cabin.

[0027] The differential pressure sensor is connected to the second bus through a wire harness and connected with the input-output coupler, and is configured to monitor indoor-outdoor air pressure difference of the prefabricated cabin.

[0028] Optionally, the prefabricated cabin control system further includes a fire-fighting monitoring device.

[0029] The fire-fighting monitoring device is connected to the second bus through a wire harness, and is configured to collect a second target signal and transmit the second target signal to the controller.

[0030] Optionally, the prefabricated cabin control system further includes a background monitoring device.

[0031] The background monitoring device is connected to the seventh end of the controller through a wire harness, and is configured to obtain a health status of the control device and send a control instruction for controlling the control device to the controller.

[0032] Optionally, the controller is arranged in a double-layer ventilation cabinet, an air conditioner matched with the prefabricated cabin is arranged on an outer cabinet door of the double-layer ventilation cabinet, and a labyrinth ventilation structure is adopted for an inner cabinet door of the double-layer ventilation cabinet.

[0033] In a second aspect, the embodiments of the present application further provide a prefabricated cabin, which comprises the prefabricated cabin control system according to the first aspect.

[0034] In a third aspect, the embodiments of the present application further provide a prefabricated cabin type substation, which comprises the prefabricated cabin according to the second aspect.

[0035] In the embodiment of the present application, the prefabricated cabin control system comprises a controller, a display, a prefabricated cabin sensor, a transformer temperature measuring device, a switch sensor, a relay and a control device; the first end of the controller is connected with the display through a wire harness, the controller is used to create a double set of virtual editable logic controllers PLC; the display is used to visualize the health status of the control device; the prefabricated cabin sensor is connected with the second end of the controller through a wire harness, the prefabricated cabin sensor is used to monitor the environmental parameters in the prefabricated cabin; the transformer temperature measuring device is connected with the third end of the controller through a wire harness, the transformer temperature measuring device is used to monitor the temperature of the transformer; the first end of the switch sensor is connected with the fourth end of the controller through a wire harness, the second end of the switch sensor is connected with the first end of the control device through a wire harness, the switch sensor is used to monitor the start-stop state of the control device; the first end of the relay is connected with the fifth end of the controller through a wire harness, the second end of the relay is connected with the second end of the control device through a wire harness, the relay is used to convert the circuit and control the opening and closing of the control device, and the control device is used to adjust the temperature in the prefabricated cabin and the temperature of the transformer. The prefabricated cabin control system collects signals or data of the prefabricated cabin and the transformer through the prefabricated cabin sensor and the transformer temperature measuring device respectively, the signals collected by the prefabricated cabin sensor and the transformer temperature measuring device are transmitted to the double set of virtual editable logic controllers in the controller, the double set of virtual editable logic controllers process the signals or data in a double-machine hot standby mode, and then generate control instructions corresponding to the control device, the control instructions control the control device through the relay, in addition, the health status of the control device can be fed back to the double set of virtual editable logic controllers in the controller, and after signal processing of the controller, the display visualizes the health status of the control device, through the structure, the control accuracy and reliability are improved, the product energy consumption is reduced, the green and environmental protection requirements are met, and the control effect of the prefabricated cabin is improved.

[0036] It should be understood that the content described in this part is not intended to identify key or important features of the embodiments of the present application, nor is it used to limit the scope of the present application. Other features of the present application will become apparent from the following description. BRIEF DESCRIPTION OF DRAWINGS

[0037] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the embodiments or prior art description. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can also be obtained by those skilled in the art without creating labor intensity.

[0038] Figure 1is one of structural diagrams of a prefabricated cabin control system provided by an embodiment of the application;

[0039] Figure 2 is one of structural diagrams of a prefabricated cabin control system provided by an embodiment of the application;

[0040] Figure 3 is one of structural diagrams of a prefabricated cabin control system provided by an embodiment of the application;

[0041] Figure 4 is one of structural diagrams of a prefabricated cabin control system provided by an embodiment of the application;

[0042] Figure 5 is one of structural diagrams of a prefabricated cabin control system provided by an embodiment of the application. DETAILED DESCRIPTION

[0043] Exemplary embodiments of the present disclosure are described herein with reference to the accompanying drawings, which are included to provide a thorough understanding of embodiments of the present disclosure by a person of ordinary skill in the art, and should be considered in connection with the following detailed description, but do not limit the scope of the present disclosure. Accordingly, those of ordinary skill in the art will recognize that various changes and modifications of the embodiments described herein can be made without departing from the scope and spirit of the present disclosure. Also, in the following description, descriptions of well-known functions and constructions are omitted for clarity and conciseness.

[0044] The terms "first", "second", and the like in the specification and claims of the present application are used to distinguish similar objects, and are not used to describe a particular order or chronological sequence. It should be understood that the structures used in this way can be interchanged under appropriate circumstances, so that the embodiments of the present application can be implemented in an order other than that illustrated or described herein, and the objects distinguished by "first", "second", etc. are generally a class, and do not limit the number of objects, for example, the first object can be one or more.

[0045] The present application provides a prefabricated cabin control system.

[0046] Please refer to Figure 1 , Figure 1 is one of structural diagrams of a prefabricated cabin control system provided by an embodiment of the application, the prefabricated cabin control system comprising: a controller 10, a display 20, a prefabricated cabin sensor 30, a transformer temperature measuring device 40, a switch sensor 50, a relay 60 and a control device 70;

[0047] The first end of the controller 10 is connected to the display 20 through a wire harness, and the controller 10 is used to create a double set of virtual editable logic controllers PLC;

[0048] The display 20 is used to visualize the health status of the control device 70;

[0049] The prefabricated cabin sensor 30 is connected to the second end of the controller 10 through a wire harness, and is used to monitor the environmental parameters in the prefabricated cabin.

[0050] The transformer temperature measuring device 40 is connected to the third end of the controller 10 through a wire harness, and is used to monitor the temperature of the transformer.

[0051] The first end of the switch sensor 50 is connected to the fourth end of the controller 10 through a wire harness, and the second end of the switch sensor 50 is connected to the first end of the control device 70 through a wire harness, and the switch sensor 50 is used to monitor the start-stop state of the control device 70.

[0052] The first end of the relay 60 is connected to the fifth end of the controller 10 through a wire harness, and the second end of the relay 60 is connected to the second end of the control device 70 through a wire harness, and the relay 60 is used to convert the circuit and control the opening and closing of the control device 70, and the control device 70 is used to adjust the temperature in the prefabricated cabin and the temperature of the transformer.

[0053] In this embodiment, the prefabricated cabin control system described above collects signals or data in the prefabricated cabin and the transformer through the prefabricated cabin sensor 30 and the transformer temperature measuring device 40 respectively, and the signals collected by the prefabricated cabin sensor 30 and the transformer temperature measuring device 40 are transmitted to the double virtual programmable logic controller (PLC) in the controller 10, and the double virtual PLC processes the signals or data in a double-machine hot standby mode, and then generates control instructions corresponding to the control device 70, and the control instructions are completed through the relay 60 to control the control device 70, in addition, the health status of the control device 70 can be fed back to the double virtual PLC in the controller 10, and after signal processing by the controller 10, the display 20 visualizes the health status of the control device 70, through the structure of the setting, while reducing the risk of transformer shutdown, the control accuracy, reliability, product energy consumption are reduced, meet the green, environmental protection demand, and then improve the control effect of the prefabricated cabin.

[0054] Among them, the controller 10 can be understood as an edge controller or a combination of a server + double virtual PLC, which is used to improve the interface capability and computing capability of the above-mentioned prefabricated cabin control system, and can also improve the applicability of the device, the double virtual PLC and the server can communicate through the MODBUS TCP communication protocol virtual physical channel, reduce the communication failure caused by external hardwiring.

[0055] The double set virtual PLC can be virtually created by the controller 10, and the first target signal is obtained according to the virtual double set PLC, and after the first target signal is processed, a control instruction is generated, the first target signal is collected by the prefabricated cabin sensor, the transformer temperature measuring device and the switch sensor, and the control instruction is used to control the opening or closing of the control device, and the double set virtual PLC can realize the triple mechanism of the "double machine hot standby control plus fault judgment self-starting" mode, as follows:

[0056] The first mechanism: when the double set virtual PLC is in a normal state, the double set virtual PLC controls the operation of the control device 70, for example: the double set virtual PLC monitors each other and controls the control device 70, thereby completing the temperature control of the prefabricated cabin and the transformer.

[0057] The second mechanism: when one of the double set virtual PLCs fails, the PLC in the normal operation state controls the target control device, or when the target control device fails, the double set virtual PLC controls the standby control device to replace the work of the target control device.

[0058] The third mechanism: when both of the double set virtual PLCs fail, the controller 10 can directly control the target control device.

[0059] Through the setting of the triple mechanism of the "double machine hot standby control plus fault judgment self-starting" mode, a multiple control mode is adopted, which reduces the risk of transformer shutdown and improves the control accuracy and reliability, and reduces the prefabricated cabin shutdown caused by the failure of the prefabricated cabin components.

[0060] In addition, the prefabricated cabin sensor 30 and the transformer temperature measuring device 40 can be understood as devices for collecting temperature, humidity and other parameters in the prefabricated cabin and the transformer. The signals or data collected by the prefabricated cabin sensor 30 and the transformer temperature measuring device 40 need to be transmitted to the double set virtual PLC in the controller 10 for logical processing and calculation, so as to obtain the optimal control instruction, that is, the start and stop of the control device 70 need to be determined by multiple parameters, therefore, the prefabricated cabin control system improves the accuracy and reliability of the control through the multi-level start strategy.

[0061] It should be noted that the prefabricated cabin sensor 30 and the transformer temperature measuring device 40 mainly collect related data and signals in the form of switch quantity and analog quantity, and then the data or signals can be transmitted to the controller 10 in the form of switch or communication, and digitalized, thereby completing data analysis and processing.

[0062] In some optional embodiments, the control device 70 can be provided with a fan, a heater, etc. corresponding to the prefabricated cabin and the transformer respectively, and relevant personnel can add the device according to the actual working condition and actual demand of the prefabricated cabin, which is not limited in the embodiments of the present application.

[0063] In the case of being provided with the fan and the heater, the controller 10 can adopt a periodic round training, a transformer temperature, a prefabricated cabin temperature and humidity comprehensive judgment mode, and start or close the corresponding number of fans or heaters, so as to ensure the balanced start operation of the fan and the heater, and further improve the control reliability of the prefabricated cabin control system.

[0064] In some other optional embodiments, the display 20 can be understood as a human-computer interaction device, and then the display 20 can be a touch screen or be used in combination with a related input device, so as to improve the human-computer interaction experience and performance. The human-computer interface in the display 20 can integrate the functions of the light alarm of the transformer and the prefabricated cabin, the analog quantity state display, the device state display and the light gear display, and further can realize the alarm and tripping protection function of the transformer, so as to improve the control reliability of the prefabricated cabin control system.

[0065] It should be noted that the display 20 is used to visualize the health state of the control device 70, and the health state is generated by the controller 10 according to the feedback information, which is the device state information fed back by the control device 70 to the controller 10.

[0066] Optionally, referring to Figure 2 , Figure 2 is a structure diagram of a prefabricated cabin control system provided by the embodiments of the present application, and the prefabricated cabin control system further comprises an input-output coupler 80.

[0067] The first end of the input-output coupler 80 is connected with the sixth end of the controller 10 through a first bus;

[0068] The second end of the input-output coupler 80 is connected with the prefabricated cabin sensor 30, the transformer temperature measuring device 40, the first end of the switch sensor 50 and the first end of the relay 60 through a second bus respectively.

[0069] In the embodiment, the first end of the input-output coupler 80 is connected with the sixth terminal bundle of the controller 10 through the first bus, and the second end of the input-output coupler 80 is connected with the prefabricated cabin sensor 30, the transformer temperature measuring device 40, the first end of the switch sensor 50 and the first end of the relay 60 through the line bundle respectively. Through the arrangement of the structure, the input-output coupler 80 is used in combination with the double-set virtual PLC, the input-output coupler 80 and the double-set virtual PLC are connected through the field bus, the double-set virtual PLC realizes data acquisition and instruction output by using the IO on the bus input-output coupler, and the problem of insufficient number and type of local IO is solved.

[0070] It should be noted that the arrangement of the input-output coupler 80 can better complete the integration and transmission of the corresponding data or signals of the devices on the second end side, that is, the input-output coupler 80 is used to integrate the first target signals collected by the prefabricated cabin sensor 30, the transformer temperature measuring device 40 and the switch sensor 50, the state information of the control device, and the first target signals and the state information are transmitted to the controller 10 through the first bus, so that the signal loss, false alarm and the like caused by the information link are reduced.

[0071] The model of the input-output coupler 80 can be selected according to the number of devices accessed on the second end side, so as to better meet the structure design of the prefabricated cabin. The model of the input-output coupler 80 is not limited in the embodiment of the application.

[0072] Optionally, referring to Figure 3 , Figure 3 is a structure schematic view three of a prefabricated cabin control system provided by the embodiment of the application, and the control device 70 comprises a transformer fan 71, a prefabricated cabin fan 72 and a prefabricated cabin heater 73.

[0073] The transformer fan 71 is connected to the second bus through the line bundle and is connected with the input-output coupler 80, and the transformer fan 71 is used to inject air into the transformer area or to exhaust air in the transformer area to the outdoor.

[0074] The prefabricated cabin fan 72 is connected to the second bus through the line bundle and is connected with the input-output coupler 80, and the prefabricated cabin fan 72 is used to inject air into the prefabricated cabin chamber or to exhaust air in the prefabricated cabin chamber to the outdoor.

[0075] The prefabricated cabin heater 73 is connected to the second bus through the line bundle and is connected with the input-output coupler 80, and the prefabricated cabin heater 73 is used to heat the air in the prefabricated cabin chamber.

[0076] In this embodiment, the control device 70 can be provided with a transformer fan 71, a prefabricated cabin fan 72 and a prefabricated cabin heater 73. When the indoor temperature in the prefabricated cabin is lower than the first target threshold, the controller 10 can control the prefabricated cabin heater 73 to heat the indoor air injected into the air conditioning unit and the first set amount of outdoor air, so as to heat the indoor air in the prefabricated cabin. When the indoor temperature in the prefabricated cabin is higher than the first target threshold, the prefabricated cabin fan 72 is controlled to increase the rotating speed, so as to increase the air supply of the indoor air injected into the air conditioning unit and the first set amount of outdoor air, so as to cool the indoor air in the prefabricated cabin. When the temperature of the transformer is higher than the second target threshold, the transformer fan 71 is started, and the rotating speed of the transformer fan 71 is controlled, so as to cool the air in the transformer area, so as to ensure the constant temperature in the room and ensure that the prefabricated cabin is in a slightly positive pressure state, thereby avoiding the dust from the outside into the room and ensuring the safe and reliable operation of the equipment in the prefabricated cabin.

[0077] The prefabricated cabin control system provided by the embodiment of the present application mainly controls the control device 70 to ensure that the indoor temperature is maintained at a threshold value, controls the humidity control device to ensure that the indoor humidity is maintained at a threshold value, and controls the fan frequency converter to ensure that the indoor air is in a slightly positive pressure state.

[0078] Optionally, the control device 70 includes M transformer fans, N prefabricated cabin fans and L prefabricated cabin heaters, and M, N and L are positive integers.

[0079] The M transformer fans are connected in parallel with each other, and the M transformer fans are connected to the second bus through a wire harness and connected to the input-output coupler.

[0080] The N prefabricated cabin fans are connected in parallel with each other, and the N prefabricated cabin fans are connected to the second bus through a wire harness and connected to the input-output coupler.

[0081] The L prefabricated cabin heaters are connected in parallel with each other, and the L prefabricated cabin heaters are connected to the second bus through a wire harness and connected to the input-output coupler.

[0082] In this embodiment, the control device 70 can be provided with M transformer fans, N prefabricated cabin fans and L prefabricated cabin heaters, and each of the M transformer fans is an independent individual. Similarly, the N prefabricated cabin fans and the L prefabricated cabin heaters are also independent individuals, so that the controller 10 can control the individual devices, thereby improving the control accuracy of the indoor temperature in the prefabricated cabin and the temperature of the transformer.

[0083] It should be noted that the specific number of M transformer fans, N prefabricated cabin fans, and L prefabricated cabin heaters can be set by relevant personnel according to the actual needs of the prefabricated cabins and transformers, and this embodiment of the invention does not limit this.

[0084] Optionally, the prefabricated cabin sensor 30 includes: a temperature sensor, a differential pressure sensor, and a humidity sensor;

[0085] The temperature sensor is connected to the second bus via a wiring harness and is connected to the input / output coupler. The temperature sensor is used to monitor the indoor temperature of the prefabricated cabin.

[0086] The humidity sensor is connected to the second bus via a wiring harness and is connected to the input / output coupler. The humidity sensor is used to monitor the indoor humidity of the prefabricated cabin.

[0087] The differential pressure sensor is connected to the second bus via a wiring harness and is connected to the input / output coupler. The differential pressure sensor is used to monitor the indoor and outdoor air pressure difference of the prefabricated cabin.

[0088] In this implementation scheme, temperature sensors, differential pressure sensors, and humidity sensors can detect temperature, air pressure, and humidity parameters within the prefabricated cabin. The prefabricated cabin control system can also be equipped with humidity control devices corresponding to the humidity sensors. For example, when the humidity within the prefabricated cabin exceeds a third target threshold, the humidity control devices are shut off to stop humidifying the air flowing through the air conditioning unit, while simultaneously increasing the fan speed to increase the airflow. When the air pressure difference between the inside and outside of the prefabricated cabin is below the third target threshold, the variable frequency drive of the humidity control devices is increased to increase the amount of air injected into the prefabricated cabin. When the air pressure difference between the inside and outside of the prefabricated cabin exceeds the third target threshold, the variable frequency drive of the blower is decreased to reduce the amount of air injected into the prefabricated cabin.

[0089] The prefabricated cabin control system provided in this application mainly ensures that the cabin is always in a slightly positive pressure state and that fresh air is continuously introduced by controlling the frequency converter of the fan. When the indoor environment is in a positive pressure environment, the indoor air pressure is slightly higher than that outdoors, which prevents pollutants such as dust from entering the indoor environment. The air entering the indoor environment replenishes the oxygen and reduces the carbon dioxide content, thus ensuring the cleanliness of the indoor air quality.

[0090] Optionally, please see Figure 4 , Figure 4 This is the fourth structural schematic diagram of a prefabricated cabin control system provided in an embodiment of the present invention. The prefabricated cabin control system also includes a fire monitoring device 90.

[0091] The fire monitoring device 90 is connected to the second bus via a wiring harness. The fire monitoring device 90 is used to collect the second target signal and transmit the second target signal to the controller 10.

[0092] In this implementation plan, the aforementioned prefabricated cabin control system is further equipped with a fire monitoring device 90. The fire monitoring device 90 has an automatic alarm function for the initial stage of a fire and is equipped with an automatic fire extinguishing control cabinet, a fire alarm broadcast system, etc. In the event of a fire, the fire monitoring device 90 can immediately send an alarm signal to the fire alarm in the local area and at the same time send an alarm signal to the alarm equipment in the fire control center, and display the location or area code of the fire. Management personnel can obtain this information from the display 20 and take corresponding measures based on this information, thereby improving the safety of the prefabricated cabin.

[0093] It should be noted that the fire monitoring device 90 can be equipped with temperature detectors, smoke detectors and combustible gas detectors, thereby collecting information from multiple sources and judging the fire situation, improving the accuracy of the judgment of the fire monitoring device 90.

[0094] Optionally, please see Figure 5 , Figure 5 This is the fifth structural schematic diagram of a prefabricated cabin control system provided in an embodiment of the present invention. The prefabricated cabin control system also includes a background monitoring device 100.

[0095] The background monitoring device 100 is connected to the seventh terminal of the controller 10 via a wiring harness. The background monitoring device 100 is used to obtain the health status of the control device 70 and to send control commands to the controller 10 to control the control device 70.

[0096] In this implementation scheme, the background monitoring device 100 can communicate with the server in the controller 10, that is, the background monitoring device 100 can have remote control function. Then the control device 70 can be controlled by the background monitoring device 100 with one click, without the need for maintenance personnel to operate on-site, which meets the needs of unmanned operation of prefabricated substation. In addition, the background monitoring device 100 can also obtain the operating status and health status of each device in the prefabricated cabin in real time, which improves the effect of remote monitoring and thus improves the control effect of the prefabricated cabin.

[0097] It should be noted that the communication connection between the background monitoring device 100 and the server in the controller 10 can be based on the IEC61850 communication protocol, without the need for third-party equipment to convert the protocol, which provides convenience for remote control.

[0098] Optionally, the controller 10 is located inside the double-layer ventilation cabinet, the air conditioner paired with the prefabricated cabin is located on the outer door of the double-layer ventilation cabinet, and the inner door of the double-layer ventilation cabinet adopts a labyrinth ventilation structure.

[0099] With this structure, a special double-layer cabinet ventilation system is adopted, and the air conditioner is arranged in the outer cabinet door. The cabinet is embedded in the prefabricated cabin, which meets the front-end maintenance requirements of the prefabricated cabin without power interruption, ensures the operating environment of the electronic devices inside the cabinet, reduces the damage of temperature and humidity in the prefabricated cabin to electronic components, and reduces the probability of controller 10 malfunctioning due to environmental factors.

[0100] It should be noted that the above-mentioned special structure can be set by relevant personnel according to the actual site selection of the prefabricated substation and the wiring layout inside the prefabricated module, and the embodiments of the present invention do not limit this.

[0101] In addition, embodiments of the present invention also provide a prefabricated cabin, including the aforementioned prefabricated cabin control system.

[0102] In addition, this invention also provides a prefabricated substation, including the aforementioned prefabricated module.

[0103] It should be understood that the various forms of processes shown above can be used to reorder, add, or delete steps. For example, the steps described in this invention can be executed in parallel, sequentially, or in different orders, as long as the desired result of the technical solution disclosed in this disclosure can be achieved, and no limitation is imposed herein.

[0104] The specific embodiments described above do not constitute a limitation on the scope of protection of this invention. Those skilled in the art should understand that various modifications, combinations, sub-combinations, and substitutions can be made according to design requirements and other factors. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this invention should be included within the scope of protection of this invention.

Claims

1. A prefabricated cabin control system, characterized in that, include: Controllers, displays, prefabricated cabin sensors, transformer temperature measuring devices, switch sensors, relays, and control equipment; The first end of the controller is connected to the display via a wiring harness. The controller is used to create two sets of virtual programmable logic controllers (PLCs) to implement a triple mechanism, which includes a first mechanism, a second mechanism, and a third mechanism. The first mechanism involves the dual sets of virtual programmable logic controllers (PLCs) controlling the operation of the control device when both sets are running normally. The second mechanism involves the PLC in normal operation controlling the control device when one of the dual sets of virtual programmable logic controllers (PLCs) fails. The third mechanism involves the controller directly controlling the control device when both sets of virtual programmable logic controllers (PLCs) fail. The display is used to visualize the health status of the control device; The prefabricated cabin sensor is connected to the second end of the controller via a wiring harness, and the prefabricated cabin sensor is used to monitor environmental parameters inside the prefabricated cabin; The transformer temperature measuring device is connected to the third terminal of the controller via a wiring harness, and the transformer temperature measuring device is used to monitor the temperature of the transformer. The first end of the switch sensor is connected to the fourth end of the controller via a wiring harness, and the second end of the switch sensor is connected to the first end of the control device via a wiring harness. The switch sensor is used to monitor the start and stop status of the control device. The first terminal of the relay is connected to the fifth terminal of the controller via a wiring harness, and the second terminal of the relay is connected to the second terminal of the control device via a wiring harness. The relay is used to switch circuits and control the opening and closing of the control device. The control device is used to regulate the temperature inside the prefabricated cabin and the transformer.

2. The prefabricated cabin control system according to claim 1, characterized in that, The prefabricated cabin control system also includes an input / output coupler; The first end of the input / output coupler is connected to the sixth terminal harness of the controller via a first bus; The second end of the input-output coupler is connected via a second bus to the wiring harnesses of the prefabricated cabin sensor, the transformer temperature measuring device, the first end of the switch sensor, and the first end of the relay.

3. The prefabricated cabin control system according to claim 2, characterized in that, The control equipment includes: transformer fan, prefabricated cabin fan, and prefabricated cabin heater; The transformer fan is connected to the second bus via a wiring harness and is connected to the input / output coupler. The transformer fan is used to inject air into the transformer area or exhaust air from the transformer area to the outside. The prefabricated cabin fan is connected to the second bus via a wiring harness and is connected to the input / output coupler. The prefabricated cabin fan is used to inject air into the prefabricated cabin or to exhaust air from the prefabricated cabin to the outside. The prefabricated cabin heater is connected to the second bus via a wiring harness and is connected to the input / output coupler. The prefabricated cabin heater is used to heat the air inside the prefabricated cabin.

4. The prefabricated cabin control system according to claim 3, characterized in that, The control equipment includes M transformer fans, N prefabricated cabin fans, and L prefabricated cabin heaters, where M, N, and L are positive integers; The M transformer fans are connected in parallel to each other, and the M transformer fans are connected to the second bus through a wiring harness and connected to the input / output coupler; The N prefabricated cabin fans are connected in parallel to each other, and the N prefabricated cabin fans are connected to the second bus through a wiring harness and connected to the input / output coupler; The L prefabricated cabin heaters are connected in parallel to each other, and the L prefabricated cabin heaters are connected to the second bus via a wiring harness and connected to the input / output coupler.

5. The prefabricated cabin control system according to claim 2, characterized in that, The sensors in the prefabricated cabin include: a temperature sensor, a differential pressure sensor, and a humidity sensor; The temperature sensor is connected to the second bus via a wiring harness and is connected to the input / output coupler. The temperature sensor is used to monitor the indoor temperature of the prefabricated cabin. The humidity sensor is connected to the second bus via a wiring harness and is connected to the input / output coupler. The humidity sensor is used to monitor the indoor humidity of the prefabricated cabin. The differential pressure sensor is connected to the second bus via a wiring harness and is connected to the input / output coupler. The differential pressure sensor is used to monitor the indoor and outdoor air pressure difference of the prefabricated cabin.

6. The prefabricated cabin control system according to claim 2, characterized in that, The prefabricated cabin control system also includes a fire monitoring device; The fire monitoring device is connected to the second bus via a wiring harness. The fire monitoring device is used to collect the second target signal and transmit the second target signal to the controller.

7. The prefabricated cabin control system according to claim 1, characterized in that, The prefabricated cabin control system also includes background monitoring equipment; The background monitoring device is connected to the seventh terminal of the controller via a wiring harness. The background monitoring device is used to obtain the health status of the control device and to send control commands to the controller to control the control device.

8. The prefabricated cabin control system according to claim 1, characterized in that, The controller is located inside the double-layer ventilation cabinet, and the air conditioner paired with the prefabricated cabin is located on the outer door of the double-layer ventilation cabinet. The inner door of the double-layer ventilation cabinet adopts a labyrinth ventilation structure.

9. A prefabricated cabin, characterized in that, The prefabricated cabin control system includes any one of claims 1 to 8.

10. A prefabricated modular substation, characterized in that, Including the prefabricated cabin as described in claim 9.

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