Integrated environment monitoring and automatic control system for power internet-of-things prefabricated substation

Abstract

The utility model discloses a comprehensive environment monitoring and automatic control system for a power internet of things prefabricated substation, which relates to the technical field of prefabricated substations, and comprises a service layer, a station control layer and a sensing layer, the service layer comprises a station end manager and a cloud end manager; the station control layer comprises a station control switch; the station control switch is in communication connection with the station end manager and the cloud end manager; the sensing layer comprises an environment control system, an environment monitoring system, a security and protection monitoring system and a video inspection system, the environment control system, the environment monitoring system and the security and protection monitoring system perform data interaction with the station control switch through the communication manager, and the video inspection system performs data interaction with the station control switch. According to the utility model, automatic control is realized according to the temperature environment in the cabin influenced by the extreme temperature of the environment, so that the power equipment in the cabin can efficiently operate in a proper environment.

Description

Technical Field

[0001] The utility model relates to the technical field of prefabricated substations, in particular to an integrated environment monitoring and automatic control system for prefabricated substations in the power Internet of Things. Background Technique

[0002] The existing detection and control systems for prefabricated substations mainly include the following parts:

[0003] 1. Security monitoring devices such as access control devices and infrared dual-technology sensors;

[0004] 2. Temperature control devices such as fans, air conditioners, and electric heaters;

[0005] 3. Environment monitoring devices such as temperature and humidity sensors and water immersion sensors.

[0006] In the prior art, the above sensors and controllers are installed in traditional substations or prefabricated substations. However, each functional module operates independently based on its basic functions. The on-site factual monitoring data can only be basically collected and displayed, and cannot be further processed or processed. Especially when the accuracy of the equipment has problems, the error of the collected data will gradually increase, and the maintenance personnel cannot effectively predict whether the equipment in the substation will fail.

[0007] In the prior art, the temperature control equipment in the substation works solely based on its single temperature control function. For example, a single electric heater can only automatically turn on and operate when the ambient temperature reaches the set low temperature, and the air conditioner can only perform a single cooling or heating function.

[0008] Therefore, those skilled in the art have provided an integrated environment monitoring and automatic control system for prefabricated substations in the power Internet of Things to solve the problems raised in the above background technique. Content of the Utility Model

[0009] The utility model provides an integrated environment monitoring and automatic control system for prefabricated substations used in unattended outdoor open-air areas. When the substation equipment in the cabin operates within the normal working temperature range, the operation loss of the equipment is optimal. At this time, the temperature environment in the cabin affected by the extreme outdoor temperature can be automatically controlled to ensure the efficient operation of the power equipment in the cabin in a suitable environment.

[0010] In order to achieve the above object, the utility model provides the following technical solutions:

[0011] The integrated environment monitoring and automatic control system for prefabricated substations in the power Internet of Things of the utility model includes:

[0012] A service layer, where the service layer includes a station-side manager and a cloud manager;

[0013] The station control layer, which includes a station control switch that is respectively communicatively connected to a station terminal manager and a cloud manager;

[0014] The sensing layer, which includes an environmental control system, an environmental monitoring system, a security monitoring system, and a video patrol system. The environmental control system, the environmental monitoring system, and the security monitoring system perform data interaction with the station control switch through a communication manager, and the video patrol system performs data interaction with the station control switch.

[0015] Furthermore, the station control switch is also connected to an Internet of Things edge gateway through a line, and the Internet of Things edge gateway is wirelessly communicatively connected to the cloud manager.

[0016] Furthermore, the station control switch is also connected to a power distribution comprehensive monitoring screen and a network video recorder through lines.

[0017] Furthermore, the communication manager is communicatively connected to the station control switch through RJ45 Ethernet, RS485 twisted pair, or wireless communication.

[0018] Furthermore, the environmental control system controls the opening and closing of air conditioners, electric heaters, fans, and lighting fixtures through a controller.

[0019] Furthermore, the environmental monitoring system senses the working environment of the substation through temperature and humidity sensing terminals, water immersion sensing terminals, SF6 gas monitoring terminals, and smoke sensing terminals, and transmits the monitored data to the communication manager.

[0020] Furthermore, the security monitoring system monitors the opening and closing of fire-fighting equipment, access control equipment, and dual-technology infrared equipment, and transmits the monitored data to the communication manager.

[0021] Furthermore, the video patrol system patrols the working environment of the substation through high-definition infrared cameras and transmits the patrol data to the communication manager.

[0022] In the above technical solution, the prefabricated substation integrated environment monitoring and automatic control system for the power Internet of Things provided by the present utility model has the following beneficial effects: The main equipment and core functions of the station control layer are concentrated in the power distribution comprehensive monitoring screen of the substation and distribution station. The overall architecture can be a single master station or can be deployed in a network form of a master station + slave stations according to the needs of multiple-level substations plus multiple distribution rooms. The master station or the master station uniformly monitors and manages the local network and system of the substation and distribution station; at the same time, it realizes automatic control according to the cabin temperature environment affected by extreme ambient temperatures, so as to ensure that the power equipment in the cabin operates efficiently in a suitable environment. Description of the Drawings

[0023] To more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required in the embodiments. Obviously, the drawings described below are only some embodiments recorded in the present utility model. For those of ordinary skill in the art, other drawings can also be obtained based on these drawings.

[0024] Figure 1 It is the structural block diagram of the comprehensive environment monitoring and automatic control system for the prefabricated substation of the power Internet of Things provided by the embodiment of the present utility model.

[0025] Explanation of the reference numerals in the drawings:

[0026] 1, Service layer; 2, Station control layer; 3, Perception layer;

[0027] 11, Station terminal manager; 12, Cloud manager;

[0028] 21, Station control switch; 22, Internet of Things edge gateway; 23, Distribution comprehensive monitoring screen; 24, Network video recorder;

[0029] 31, Environment control system; 32, Environment monitoring system; 33, Security monitoring system; 34, Video inspection system; 35, Communication manager;

[0030] 311, Air conditioner; 312, Electric heater; 313, Fan; 314, Lighting fixture; 315, Controller;

[0031] 321, Temperature and humidity perception terminal; 322, Water immersion perception terminal; 323, SF6 gas monitoring terminal; 324, Smoke perception terminal;

[0032] 331, Fire fighting equipment; 332, Access control equipment; 333, Infrared dual detector;

[0033] 341, High-definition infrared camera. Detailed implementation manners

[0034] In order to enable those skilled in the art to better understand the technical solutions of the present utility model, the following will further introduce the present utility model in detail in conjunction with the drawings.

[0035] See Figure 1 as shown in

[0036] The comprehensive environment monitoring and automatic control system for the prefabricated substation of the power Internet of Things described in the embodiment of the present utility model includes:

[0037] Service layer 1, and the service layer 1 includes a station terminal manager 11 and a cloud manager 12;

[0038] The station control layer 2 includes a station control switch 21, which is respectively connected to the station manager 11 and the cloud manager 12; the station control switch 21 transmits the perception layer data collected by the station control layer 2 to the station management system or the cloud management system located in the main station dispatching center by wire or wireless means for data processing, display, and issuing of automatic control strategies;

[0039] Perception layer 3, the perception layer 3 includes an environment control system 31, an environment monitoring system 32, a security monitoring system 33 and a video inspection system 34. The environment control system 31, the environment monitoring system 32 and the security monitoring system 33 interact with the station control switch 21 through the communication manager 35, and the video inspection system 34 interacts with the station control switch 21.

[0040] The station control switch 21 is also connected to the IoT edge gateway 22 via a line, and the IoT edge gateway 22 is wirelessly connected to the cloud manager 12 .

[0041] The station control switch 21 is also connected to the power distribution integrated monitoring screen 23 and the network video recorder 24 through lines.

[0042] During specific operation, the station control switch 21 collects the data of the perception layer 3 through the Internet of Things edge gateway 22 and forwards it to the integrated monitoring screen 23 in the distribution room after edge computing. At the same time, the data is transmitted to the server network by wired or wireless means; the video stream is stored in the network video recorder 24 through the station control switch 21 of the station control layer 2, and forwarded to the integrated monitoring screen 23 in the distribution room. At the same time, the data is transmitted to the server network by wired or wireless means to perform video image recognition processing to extract key information.

[0043] The communication manager 35 is connected to the station control switch 21 via RJ45 Ethernet, RS485 twisted pair or wireless communication, collects data from the environment control system 31, the environment monitoring system 32 and the security monitoring system 33, and forwards them to the station control switch 21.

[0044] The environmental control system 31 controls the opening and closing of the air conditioner 311, the electric heater 312, the fan 313 and the lighting fixture 314 through the controller 315. The air conditioner 311, the electric heater 312, the fan 313 and the lighting fixture 314 are all connected to the controller 314, and the controller collects the working status of the air conditioner 311, the electric heater 312, the fan 313 and the lighting fixture 314 and transmits them to the communication manager 353, and the data is collected and then transmitted to the edge gateway 22 of the Internet of Things; the edge gateway 22 of the Internet of Things will analyze the environmental monitoring data and the security detection data according to the environmental control strategy after the data is collected, so as to issue control instructions to the controller according to the preset linkage logic.

[0045] When the temperature and humidity sensing terminal 321 in the environmental control system 31 detects that the temperature inside the prefabricated substation exceeds 40 degrees Celsius defined by the user, the IoT edge gateway 222 determines that the room temperature has reached the over-temperature range based on the real-time temperature data read. At this time, a remote control instruction is sent to the controller 315, and then the controller 315 respectively performs control actions to stop the ventilation of the fan 313 and start the refrigeration of the air conditioner 311 to reduce the room temperature.

[0046] The environmental monitoring system 32 senses the working environment of the substation through the temperature and humidity sensing terminal 321, the water immersion sensing terminal 322, the SF6 gas monitoring terminal 323 and the smoke sensing terminal 324, and transmits the monitored data to the communication manager 35. The data monitored and sensed by the temperature and humidity sensing terminal 321, the water immersion sensing terminal 322, the SF6 gas monitoring terminal 323 and the smoke sensing terminal 324 are forwarded to the communication manager 35 through micro-power wireless or via the RS485 communication line, and then transmitted to the IoT edge gateway 22.

[0047] Furthermore, the security monitoring system 33 monitors the opening and closing of the fire-fighting equipment 331, the access control equipment 332 and the dual-technology infrared equipment 333, and transmits the monitored data to the communication manager 35. After the data is aggregated, it is transmitted to the IoT edge gateway 22.

[0048] When a person whose access control by the access control equipment 332 fails to pass tries to enter the prefabricated substation, they will be blocked. If the violator bypasses the access control system and forcibly enters the prefabricated substation, the dual-technology infrared equipment 333 will detect the intrusion behavior, and then trigger the indoor sound and light alarm system (if configured), and at the same time transmit the alarm information to the IoT edge gateway 22 through the communication manager 35, and then the IoT edge gateway 22 notifies the station manager 11 and the cloud manager 12 to inform the operation and maintenance management personnel.

[0049] When a compliant person enters the prefabricated substation, the automatic lighting will be triggered to facilitate the operation and maintenance work of the operation and maintenance personnel.

[0050] The video inspection system 34 inspects the working environment of the substation through the high-definition infrared camera 341 and transmits the inspection data to the communication manager 35. The video stream captured by the high-definition infrared camera 341 is stored in the network video recorder 24 through the substation control switch 21, and at the same time forwarded to the distribution room integrated monitoring screen 23 for the operation and maintenance personnel to view. The video inspection system 34 makes identifications and generates alarm screenshots and records based on the parameters of the facilities, such as whether the operating temperature of the equipment within the end range exceeds the limit, whether the clothing of the entering operation and maintenance personnel meets the requirements, and whether there are moving objects in the area.

[0051] The lighting of the system of this application is controlled through three modes: the hatch travel switch, the indoor wall switch, and the remote control of the server layer. Each cabin is independently controlled. The input node of the controller 315 is used to feedback the control status. The lighting box communication line is connected to the power distribution comprehensive monitoring screen 23. The indoor manual ventilation start / stop button, the outdoor manual ventilation start / stop button, and the remote control output node are connected in parallel to control the contactor. The auxiliary contact of the contactor is connected to the input node of the controller 315 to feedback the control status. The air conditioner 33 is directly connected to the controller 315 through an RS485 twisted pair to receive the control of refrigeration and heating. The remote control output node in the electric heater distribution box controls the start / stop of the electric heater through a contactor. The auxiliary contact of the contactor is connected to the input node of the controller 315 to feedback the control status. The communication line of the control box of the electric heater 332 is connected to the power distribution comprehensive monitoring screen 23.

[0052] The Internet of Things edge gateway 22 of this application is configured with a room temperature governance module, which will detect the current indoor temperature based on the indoor temperature sensor and control the ventilation fan, air conditioner refrigeration, air conditioner heating, and heater to achieve refined governance of the indoor environmental temperature according to the set value.

[0053] The room temperature governance module divides the indoor temperature range into 6 temperature zones:

[0054] 1. High-temperature zone:

[0055] When the current room temperature is greater than the high-temperature set value, the temperature governance fails. The high-temperature alarm is output, and the governance strategy of the over-temperature zone is maintained.

[0056] 2. Over-temperature zone:

[0057] When the current room temperature is greater than the over-temperature set value, stop the fan ventilation and start the air conditioner refrigeration to lower the room temperature

[0058] 3. Over-heated zone:

[0059] When the current room temperature is greater than the over-heated set value, start the fan ventilation to lower the indoor temperature

[0060] 4. Normal zone:

[0061] When the current room temperature is between the low-temperature set value and the over-heated set value, no treatment is performed

[0062] 5. Low-temperature zone:

[0063] When the current room temperature is lower than the low-temperature set value, start the heater or air conditioner heating to raise the indoor temperature

[0064] 6. Over-cooled zone:

[0065] When the current room temperature is lower than the over-cooled set value, the temperature governance fails. The over-cooled alarm is output, and the governance strategy of the low-temperature zone is maintained.

[0066] In actual application scenarios, since the fan 33 also functions to ventilate and discharge harmful gases (SF6). When the fan 33 is manually or controlled by other modules to start, this module pauses temperature control and shuts down the air conditioner and heater.

[0067] The IoT edge gateway of this application deploys a data cleaning module based on the Grubbs' criterion. A large amount of measured value data is input into this module from the perception layer. The Grubbs' criterion is used to detect and eliminate outliers / anomalies in the measurement samples, ensuring the accuracy and effectiveness of the output actual measured values.

[0068] The Grubbs' criterion is based on the premise of a normal distribution. The theory of the Grubbs' criterion is relatively rigorous, with a clear probability meaning, and can be used for abnormal alarm determination and application scenarios that require accuracy, such as input values in automatic control.

[0069] According to error theory, to effectively eliminate accidental errors and possibly large errors, it is necessary to classify and inspect them, eliminate suspicious values, and improve the adaptive speed.

[0070] The IoT edge gateway of this application also deploys an active average value module. For each input measured value, the module records a certain number of its historical change values as samples and outputs the mean of its samples. At the same time, a timer is used to identify the activity of the measured value. Among multiple measured values, only the mean of the samples of the currently active measured values is averaged and then output; the effect of the output value is acceptable.

[0071] The main equipment and core functions of the station control layer of this application are concentrated in the distribution comprehensive monitoring screen of the substation and distribution station. The overall architecture can be a single master station, or it can be deployed in a networking form of a master station + slave stations according to the needs of multiple substations plus multiple distribution rooms. The master station or master station uniformly monitors and manages the local network and system of the substation and distribution station.

[0072] Those skilled in the art of this industry should understand that the present utility model is not limited by the above embodiments. What is described in the above embodiments and the specification only illustrates the principle of the present utility model. Without departing from the spirit and scope of the present utility model, the present utility model will have various changes and improvements, and these changes and improvements all fall within the scope of the present utility model claimed. The scope of protection claimed by the present utility model is defined by the appended claims and their equivalents.

Claims

1. The comprehensive environmental monitoring and automatic control system of the prefabricated substation of the power Internet of Things is characterized by: include: A service layer (1), the service layer (1) comprising a station manager (11) and a cloud manager (12); A station control layer (2), the station control layer (2) comprising a station control switch (21), the station control switch (21) being respectively connected to the station end manager (11) and the cloud manager (12); A perception layer (3), wherein the perception layer (3) includes an environment control system (31), an environment monitoring system (32), a security monitoring system (33) and a video inspection system (34); the environment control system (31), the environment monitoring system (32) and the security monitoring system (33) exchange data with the station control switch (21) via a communication manager (35); and the video inspection system (34) exchanges data with the station control switch (21).

2. The comprehensive environmental monitoring and automatic control system for the prefabricated substation of the electric power Internet of Things according to claim 1 is characterized by: The station control switch (21) is also connected to the edge gateway of the Internet of Things (22) via a line, and the edge gateway of the Internet of Things (22) is connected to the cloud manager (12) via wireless communication.

3. The comprehensive environmental monitoring and automatic control system for the prefabricated substation of the electric power Internet of Things according to claim 2 is characterized by: The station control switch (21) is also connected to the power distribution integrated monitoring screen (23) and the network video recorder (24) through lines.

4. The comprehensive environmental monitoring and automatic control system for the prefabricated substation of the electric power Internet of Things according to claim 1 is characterized by: The communication manager (35) is connected to the station control switch (21) via RJ45 Ethernet, RS485 twisted pair or wireless communication.

5. The comprehensive environmental monitoring and automatic control system for the prefabricated substation of the electric power Internet of Things according to claim 4 is characterized by: The environmental control system (31) controls the opening and closing of the air conditioner (311), the electric heater (312), the fan (313) and the lighting fixture (314) through the controller (315).

6. The comprehensive environmental monitoring and automatic control system for the prefabricated substation of the electric power Internet of Things according to claim 4 is characterized by: The environmental monitoring system (32) senses the working environment of the substation through a temperature and humidity sensing terminal (321), a water immersion sensing terminal (322), an SF6 gas monitoring terminal (323) and a smoke sensing terminal (324), and transmits the monitored data to a communication manager (35).

7. The comprehensive environmental monitoring and automatic control system for the prefabricated substation of the electric power Internet of Things according to claim 4 is characterized by: The security monitoring system (33) monitors the opening and closing of the fire-fighting equipment (331), the access control equipment (332) and the infrared dual-identification equipment (333), and transmits the monitored data to the communication manager (35).

8. The comprehensive environmental monitoring and automatic control system for the prefabricated substation of the electric power Internet of Things according to claim 4 is characterized by: The video inspection system (34) inspects the working environment of the substation through a high-definition infrared camera (341) and transmits the inspection data to the communication manager (35).

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