An intelligent station house monitoring system and method based on intelligent fusion terminal

Abstract

The present invention belongs to the field of power equipment, and specifically relates to an intelligent station house monitoring system and method based on an intelligent fusion terminal. The monitoring system can monitor the environment and equipment in the station house, and adjust the operating status of the safety equipment or power equipment when a fault occurs, so as to ensure the stable operation of the distribution station house. Among them, the equipment in the intelligent station house monitoring system includes: a temperature and humidity sensor group, a first gas sensor, a second gas sensor, a smoke sensor, a noise sensor, a water immersion sensor, a door movement sensor, a space partial discharge sensor, and an intelligent fusion terminal. The intelligent fusion terminal is connected to the collection device through multi-mode wireless communication, and is electrically connected to the execution device through RS485; it is connected to the distribution master station through Ethernet or power carrier communication, thereby realizing data and command interaction. The present invention solves the problems of low operation and maintenance management efficiency of existing distribution stations, reliance on manual labor, and low utilization of the collected station house monitoring data.

Description

Technical Field

[0001] The present invention belongs to the field of electric power equipment, and in particular relates to an intelligent station house monitoring system and method based on an intelligent fusion terminal. Background Art

[0002] A distribution station is a site that distributes electricity transmitted on the power grid to electrical equipment or users. The distribution station is located at the end of the power grid and is a node on the radial power network. In the topological structure of the power line, the distribution station is connected to the substation above and the electrical equipment below. A single distribution station generally has a small capacity and is therefore only responsible for the power load in a small area; the voltage level of most distribution stations close to users is usually only below 35 kV. Distribution stations can be roughly divided into two categories based on their functions. One function is to dispatch various lines and balance the load on each line; the other independent distribution station plays a role in changing the way power is transmitted.

[0003] During the operation of a distribution station, it is necessary to monitor the environment and equipment operating status in the station house, so as to ensure that any failure of the distribution equipment can be discovered and responded to in a timely manner. Otherwise, it may not only affect the normal power supply of power users and cause losses to users, but also cause the distribution equipment or the entire distribution station to shut down or be damaged, and even affect the normal operation of the power grid. However, the detection work of existing distribution stations mainly relies on regular inspections by operation and maintenance managers, and the collection and application of monitoring data is relatively low, which makes it difficult to support the operation and maintenance management work. Summary of the invention

[0004] In order to solve the problems of low operation and maintenance management efficiency of existing power distribution stations, reliance on manual labor, and low utilization of collected station monitoring data; the present invention provides an intelligent station monitoring system and method based on an intelligent fusion terminal.

[0005] The present invention is implemented by the following technical solutions:

[0006] An intelligent station monitoring system based on an intelligent fusion terminal can monitor the environment in the station and the operating status of each device, and adjust the operating status of the safety equipment or power equipment inside the station when a fault or dangerous state occurs, so as to ensure the stable operation of the distribution station. The equipment in the intelligent station monitoring system includes: a temperature and humidity sensor group, a first gas sensor, a second gas sensor, a smoke sensor, a noise sensor, a water immersion sensor, a door movement sensor, a space partial discharge sensor, and an intelligent fusion terminal.

[0007] The temperature and humidity sensor group includes a temperature detection unit and a humidity detection unit. The temperature detection unit is installed at multiple locations in the power distribution room and in each switch cabinet. The humidity detection unit is installed at multiple locations in the power distribution room. The temperature and humidity sensor group is used to detect the real-time temperature and humidity signals at the installation location.

[0008] The first gas sensor is installed in the power distribution room. The first gas sensor is used to obtain the real-time oxygen concentration signal and sulfur hexafluoride gas concentration signal in the power distribution room. The second gas sensor is installed at the high-voltage side equipment in the power distribution room. The second gas sensor is used to obtain the ozone concentration signal on the high-voltage side in the power distribution room.

[0009] The smoke sensor is installed above the transformer in the power distribution room. The smoke sensor is used to obtain the smoke concentration signal at the transformer. The noise sensor is installed on the transformer equipment in the power distribution room. The noise sensor is used to detect the equipment noise signal when the transformer is working.

[0010] The water sensor is installed in the water channel in the power distribution room. The water sensor is used to obtain the water level in the water channel, and then generate a water leakage alarm signal when the detected real-time water level reaches the preset target water level.

[0011] The door motion sensor is installed on the door in the power distribution room. The door motion sensor is used to detect the open and close status of each door in the power distribution room.

[0012] The space partial discharge sensor is installed in the power distribution room, and the installation height of the space partial discharge sensor is greater than the top of the switch cabinet. The space partial discharge sensor is used to collect high-frequency partial discharge electromagnetic wave signals in the space of the power distribution room.

[0013] The intelligent fusion terminal is connected in communication with the temperature and humidity sensor group, the first gas sensor, the second gas sensor, the smoke sensor, the noise sensor, the water immersion sensor, the door movement sensor, and the space partial discharge sensor; and then obtains the various status signals in the station house collected by the above-mentioned collection device. The intelligent fusion terminal is also electrically connected to the air-conditioning controller, dehumidifier controller, fan controller, lighting switch, and alarm in the station house; and then issues corresponding control signals to the above-mentioned execution devices according to the environment or equipment operation status collected in the station house. The intelligent fusion terminal is also connected in communication with the power distribution master station, and then reports the various status signals obtained and the various control signals issued to the master station server of the power distribution master station.

[0014] The intelligent fusion terminal provided by the present invention is mainly used in the intelligent station monitoring system to: (1) collect temperature signals of various detection points and determine whether the real-time temperature of each detection point exceeds the respective preset warning value. When the number of detection points whose temperature exceeds the warning value is greater than a preset value and the average temperature of all detection points is greater than a high temperature preset value, a control signal is sent to the air conditioner controller to start the cooling mode of the air conditioner to cool down the distribution room. (2) Collect humidity signals of various detection points and determine whether the real-time humidity of each detection point exceeds the respective preset warning value. When the number of detection points whose humidity exceeds the warning value is greater than a preset value, a control signal is sent to the dehumidifier controller to start the dehumidifier to dehumidify the inside of the distribution room. (3) Collect oxygen concentration signals, sulfur hexafluoride concentration signals and smoke concentration signals in the distribution room, and when the oxygen concentration in the station room is lower than a preset low concentration critical value, or the sulfur hexafluoride concentration is higher than a preset high concentration critical value, or the smoke concentration is higher than a preset high concentration critical value, a start command is sent to the fan controller to remove and update the air in the station. (4) Collect the ozone concentration signal at the high-voltage side equipment in the station, and report a corona alarm signal to the main station when the ozone concentration signal is higher than a warning value. (5) Determine whether there is a fire risk at the equipment based on the smoke concentration signal and noise signal at the transformer. If so, report a fire warning signal to the main station and turn on the alarm. (6) Collect the water leakage alarm signal generated by the water immersion sensor and report it to the main station, and turn on the alarm. (7) Collect the partial discharge electromagnetic wave signal generated in the station, and report a partial discharge alarm signal to the main station when the partial discharge electromagnetic signal exceeds the preset warning interval. (8) Collect the switch status signal of the door motion sensor, and when any door status changes from closed to open, obtain the operation and maintenance request reported in advance by the management personnel from the main station: when the operation and maintenance request is successfully obtained, an opening command will be issued to the lighting switch; otherwise, an intrusion alarm command will be reported to the main station and the alarm will be turned on.

[0015] As a further improvement of the present invention, any one or more of the temperature and humidity sensor group, the first gas sensor, the second gas sensor, the smoke sensor, the noise sensor, the water sensor, the door movement sensor, and the space partial discharge sensor are connected to the intelligent fusion terminal through a multi-mode wireless communication method. When multi-mode wireless communication is adopted, the temperature and humidity sensor group, the first gas sensor, the second gas sensor, the smoke sensor, the noise sensor, the water sensor, the door movement sensor, and the space partial discharge sensor are all connected with a multi-mode wireless communication device, and the local communication module in the intelligent fusion terminal selects a communication module with a multi-mode wireless communication function.

[0016] As a further improvement of the present invention, the communication modes supported by the multi-mode wireless communication module include cellular mobile communication mode, wireless LAN communication mode, ZigBee-based personal area network communication mode, and Bluetooth communication mode. The multi-mode wireless communication module switches the communication mode according to the current communication environment, thereby ensuring that the status signal collected by the collection device is wirelessly transmitted to the intelligent fusion terminal in a mode with lower power consumption.

[0017] As a further improvement of the present invention, the intelligent fusion terminal and the main station server are connected by Ethernet or by power line-based power carrier communication.

[0018] As a further improvement of the present invention, the intelligent fusion terminal and the data center of the main station server use the MQTT protocol for interactive communication, and then upload the various status signals in the station room detected by the temperature and humidity sensor group, the first gas sensor, the second gas sensor, the smoke sensor, the noise sensor, the water immersion sensor, the door movement sensor, and the space partial discharge sensor to the main station server. The data center classifies and stores the received status signals, and when the main station server receives a station room operation status query request issued by the management personnel, it responds to the relevant request, screens and displays the monitoring data of the environment or equipment in the station room.

[0019] As a further improvement of the present invention, the alarm uses an audible and visual alarm. When the intelligent fusion terminal determines that any dangerous state occurs in the station house, a dedicated alarm signal is generated and sent to the audible and visual alarm. The audible and visual alarm emits different voices, sounds, and / or flashing lights according to different types of alarm signals.

[0020] As a further improvement of the present invention, the noise sensor sends the sound signal collected around the transformer to the intelligent fusion terminal, which analyzes the transformer operation status based on the sound signal. When abnormal noise appears in the collected sound signal, an alarm signal for characterizing transformer failure is sent to the main station server. The intelligent fusion terminal also extracts the environmental noise from the collected sound signal, and generates a fire warning signal for determining whether there is a fire risk based on the waveform fit between the environmental noise and the preset fire scene environmental noise.

[0021] The present invention also includes a smart station monitoring method based on a smart fusion terminal, which is applied to the smart station monitoring system based on the smart fusion terminal as described above, thereby realizing station environment monitoring, equipment operation status monitoring, security and fault alarm, and equipment status linkage control functions. The implementation process of each function in the smart station monitoring method includes the following contents:

[0022] 1. Station building environment monitoring

[0023] 1. Detect the ambient temperature and humidity inside the substation, and send the device identification number of the temperature and humidity sensor and the corresponding detection value to the intelligent fusion terminal. The intelligent fusion terminal uploads the detection results to the main station server, and determines whether the temperature and humidity values ​​of each detection point exceed their respective preset warning values, and uploads a corresponding temperature and humidity alarm signal when the detection result exceeds the limit.

[0024] 2. Detect the oxygen concentration and sulfur hexafluoride gas concentration in the distribution station room, and send the corresponding detection values ​​to the intelligent fusion terminal. The intelligent fusion terminal uploads the detection results to the main station server, and determines whether the gas concentration of each detection point exceeds the preset warning value, and uploads a corresponding gas pollution alarm signal when the detection result exceeds the limit.

[0025] 3. Detect the smoke concentration in the distribution station and the environmental noise information around the transformer, and send the detection results to the intelligent fusion terminal. The intelligent fusion terminal uploads the detection results to the main station server, and determines whether there is a fire risk in the station based on the detection results. If so, it reports a fire warning signal to the main station server.

[0026] 4. Collect the water level signal in the water tank of the power distribution room and send the test results to the intelligent fusion terminal. When the intelligent fusion terminal determines that there is water immersion in the water tank based on the test results, it uploads a water leakage alarm signal to the main station server.

[0027] 5. Collect the partial discharge electromagnetic wave signals generated in the station and send the detection results to the intelligent fusion terminal. When the intelligent fusion terminal determines whether the partial discharge electromagnetic signal in the station exceeds the preset warning range, it reports a partial discharge alarm signal to the main station server.

[0028] 2. Equipment operation status monitoring

[0029] 1. Obtain equipment noise information at the transformer and send the equipment noise signal to the intelligent fusion terminal. The intelligent fusion terminal combines the detected equipment noise information and various power signals during the operation of the transformer area to determine the operating status of the transformer and upload the determination result to the main station server.

[0030] 2. Collect the real-time temperature of the cable connection pile in the switch cabinet and send the detected temperature to the intelligent fusion terminal. The intelligent fusion terminal determines the operating status of the switchgear according to the equipment temperature, ambient temperature, and various power signals during the operation of the substation, and uploads the judgment result to the main station server.

[0031] 3. Collect the ozone concentration at the high-voltage side equipment and send the test results to the intelligent fusion terminal. The intelligent fusion terminal determines whether the ozone concentration is higher than a preset concentration upper limit, and reports a corona alarm signal to the main station server.

[0032] 3. Security and Fault Alarm

[0033] 1. Before entering the power distribution room, the operation and maintenance personnel shall first send an operation and maintenance request to the main station server. After the main station server responds to the operation and maintenance request, the operation and maintenance personnel are allowed to enter the power distribution room to carry out work. The intelligent fusion terminal collects the switch status signals of each door in the power distribution room, and when the state of any door changes from closed to open, it obtains the operation and maintenance request reported in advance by the management personnel from the main station; when the operation and maintenance request fails to be obtained, an intrusion alarm instruction is reported to the main station.

[0034] 2. When generating fire warning signals, water leakage alarm signals, partial discharge alarm signals, corona alarm signals and intrusion alarm signals, the intelligent fusion terminal sends corresponding control instructions to the alarm to drive the alarm to operate.

[0035] 4. Equipment status linkage control

[0036] 1. Collect temperature signals from each detection point inside the station room to determine whether the real-time temperature of each detection point exceeds the preset warning value. When the number of detection points with temperatures exceeding the warning value is greater than a preset value and the average temperature of all detection points is greater than a high temperature preset value, a control signal is sent to the air conditioning controller to turn on the cooling mode of the air conditioner to cool down the distribution room.

[0037] 2. Collect humidity signals from each detection point to determine whether the real-time humidity at each detection point exceeds the preset warning value. When the number of detection points where the humidity exceeds the warning value is greater than a preset value, a control signal is sent to the dehumidifier controller to start the dehumidifier to dehumidify the inside of the power distribution room.

[0038] 3. Collect the oxygen concentration signal, sulfur hexafluoride concentration signal and smoke concentration signal in the distribution room; and when the oxygen concentration in the station room is lower than a preset low concentration critical value, or the sulfur hexafluoride concentration is higher than a preset high concentration critical value, or the smoke concentration is higher than a preset high concentration critical value, send an open command to the fan controller to remove and update the air in the station.

[0039] 4. Collect the switch status signal of the door motion sensor, and when any door status changes from closed to open, obtain the operation and maintenance request reported in advance by the management personnel from the main station. When the operation and maintenance request is successfully obtained, an opening command will be issued to the lighting switch.

[0040] As a further improvement of the present invention, when the alarm in the station house is running due to any fault condition, the operation and maintenance management personnel handles the fault condition occurring in the station house, and uploads a fault clearing notification to the main station server after the processing is completed. After receiving the fault clearing notification, the main station server issues a stop operation control command to the alarm through the intelligent management terminal, and the alarm is turned off after receiving the command.

[0041] As a further improvement of the present invention, during the linkage control of the equipment status, when the air conditioner is in the cooling state, when the real-time temperature of all detection points is less than the respective preset low temperature warning values, the air conditioner is turned off. When the dehumidifier is in operation, when the real-time humidity of all detection points is lower than a preset warning value, the dehumidifier stops running. During the operation of the fan, when the oxygen concentration in the station room is higher than a preset high concentration critical value, and the sulfur hexafluoride concentration and the smoke concentration are lower than the respective preset low concentration critical values, the fan stops running. When the lighting switch inside the station room is turned on, when the intelligent fusion terminal receives the notification from the main station server that the operation and maintenance manager has completed the operation and maintenance, and the switch state signal of the door motion sensor changes from on to off, the lighting switch is turned off.

[0042] The technical solution provided by the present invention has the following beneficial effects:

[0043] In an intelligent station house monitoring system based on an intelligent fusion terminal provided by the present invention, the monitoring functions of the temperature, humidity, gaseous pollutants, water leakage, corona, noise, fire, partial discharge and other conditions or faults inside the distribution station house are uniformly integrated into the intelligent fusion terminal, and the intelligent fusion terminal monitors the environment and equipment operating status inside the distribution station, and dynamically adjusts the operating status of the equipment in the station according to the monitoring results. The system of the present invention can realize fully automatic monitoring of the station environment, and can dynamically adjust the operating status of the equipment in the station without manual intervention. The intelligent fusion terminal is a local device, which has a faster response speed during the abnormal handling process and a higher management efficiency for the distribution station. At the same time, the system can also upload the monitoring data and management data to the master station server in the cloud, which is used to assist the distribution master station in managing and scheduling the equipment operating status at the distribution station site. BRIEF DESCRIPTION OF THE DRAWINGS

[0044] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0045] Figure 1 This is a structural topology diagram of an intelligent station house monitoring system based on an intelligent fusion terminal provided in Example 1 of the present invention.

[0046] Figure 2 This is a task flow chart of the implementation process of an intelligent station house monitoring method based on an intelligent fusion terminal provided in Example 2 of the present invention. DETAILED DESCRIPTION

[0047] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0048] Example 1

[0049] This embodiment provides an intelligent substation monitoring system based on an intelligent fusion terminal. The monitoring system can monitor the environment in the substation and the operating status of each device, and adjust the operating status of the safety equipment or power equipment in the substation when the system determines that a fault or dangerous state occurs, so as to ensure the stable operation of the distribution substation. Figure 1 As shown, the equipment in the intelligent station monitoring system includes: a temperature and humidity sensor group, a first gas sensor, a second gas sensor, a smoke sensor, a noise sensor, a water immersion sensor, a door movement sensor, a space partial discharge sensor, and an intelligent fusion terminal.

[0050] In the system, the temperature and humidity sensor group, the first gas sensor, the second gas sensor, the smoke sensor, the noise sensor, the water immersion sensor, the door movement sensor, and the space partial discharge sensor are the signal acquisition devices of the station house. The intelligent fusion terminal is the data processing center and equipment management center of the system; the intelligent fusion terminal receives the status signal collected by the acquisition device, determines the real-time operation status of the station house, and reports the collected information and processing results to the data center of the main station server. At the same time, the intelligent fusion terminal also controls the operation status of temperature control, dehumidification, exhaust, drainage, fire protection, lighting and other equipment at the local end according to the operation status judgment results of the site. Realize timely response to fault status and avoid the expansion of fault status inside the station house.

[0051] Among them, the intelligent fusion terminal is connected to the temperature and humidity sensor group, the first gas sensor, the second gas sensor, the smoke sensor, the noise sensor, the water immersion sensor, the door movement sensor, and the space partial discharge sensor; and then obtains the various status signals in the station house collected by the above-mentioned collection device. The intelligent fusion terminal is also connected to the air-conditioning controller, dehumidifier controller, fan controller, lighting switch, and alarm in the station house through the RS485 serial port communication; and then sends corresponding control signals to the above-mentioned execution devices according to the collected environment or equipment operation status in the station house. The intelligent fusion terminal is also connected to the power distribution master station, and then reports the various status signals obtained and the various control signals issued to the master station server of the power distribution master station.

[0052] In this embodiment, the collection terminals all need to communicate with the intelligent fusion terminal. In theory, the two can be connected by wired communication or wireless communication. However, considering that the number of communication interfaces of the intelligent fusion terminal is limited, and the layout and modification of the lines in the power distribution station room are technically difficult, this embodiment uses wireless communication to achieve data communication between the collection device and the intelligent fusion terminal. In particular, this embodiment uses a multi-mode wireless communication method, and the collection device and the intelligent fusion terminal can use a variety of different wireless communication methods for data transmission, thereby ensuring the effectiveness of the data communication process.

[0053] In this embodiment, any one or more of the temperature and humidity sensor group, the first gas sensor, the second gas sensor, the smoke sensor, the noise sensor, the water sensor, the door movement sensor, and the space partial discharge sensor are connected to the intelligent fusion terminal through a multi-mode wireless communication method. When multi-mode wireless communication is used, the temperature and humidity sensor group, the first gas sensor, the second gas sensor, the smoke sensor, the noise sensor, the water sensor, the door movement sensor, and the space partial discharge sensor are all connected to a multi-mode wireless communication device, and the local communication module in the intelligent fusion terminal selects a communication module with a multi-mode wireless communication function.

[0054] The communication modes supported by the multi-mode wireless communication module include cellular mobile communication mode, wireless LAN communication mode, ZigBee-based personal area network communication mode, and Bluetooth communication mode. The multi-mode wireless communication module switches the communication mode according to the current communication environment, thereby ensuring that the status signal collected by the collection device is wirelessly transmitted to the intelligent fusion terminal in a low-power mode.

[0055] In addition, in this embodiment, the intelligent fusion terminal and the master station server are connected via Ethernet or via a power line-based power carrier communication connection.

[0056] The temperature and humidity sensor group includes a temperature detection unit and a humidity detection unit. The temperature detection unit is installed at multiple locations in the power distribution room and in each switch cabinet. The humidity detection unit is installed at multiple locations in the power distribution room. The temperature and humidity sensor group is used to detect the real-time temperature and humidity signals at the installation location.

[0057] In the system provided in this embodiment, temperature monitoring mainly includes two parts: the internal temperature of the station building and the surface temperature of the core equipment. The internal temperature of the station building can be evaluated by detecting the real-time temperature at different locations in the station building. And because different equipment produces different amounts of heat during operation, the preset safety temperature thresholds at different detection points inside the station building are also different. This needs to be manually set by technical experts based on historical data under normal operating conditions of the station building. The surface temperature of the core equipment is mainly reflected in the temperature of the cable connection pile head inside the switch cabinet. This part is the area where the temperature of the equipment needs to be detected, and the temperature has an impact on the operating stability and safety of the system. In particular, considering that the power of the equipment also has an impact on the heat generation, when the intelligent fusion of this embodiment collects the temperature of the equipment or the station building, it can also combine the power information during the operation of the power grid to comprehensively evaluate the operating status of the equipment.

[0058] Humidity is a key environmental parameter that needs to be controlled during the operation of the power distribution station. When the humidity inside the power distribution station is too high, water vapor may condense on the power equipment, causing equipment short circuit and thus causing serious power accidents. This embodiment installs a large number of humidity sensors to monitor the humidity environment in various parts of the power distribution station; and uses dehumidification equipment to adjust the humidity of the environment in the power distribution station when necessary.

[0059] The first gas sensor is installed in the distribution room. The first gas sensor is used to obtain the real-time oxygen concentration signal and sulfur hexafluoride gas concentration signal in the distribution room. There are a large number of circuit breakers in the distribution station. The sulfur hexafluoride circuit breaker is a circuit breaker that uses sulfur hexafluoride gas as an arc extinguishing medium and an insulating medium. Therefore, sulfur hexafluoride overflow may occur during the operation of the distribution station. Sulfur hexafluoride gas is biologically toxic, so this embodiment uses corresponding sensors to detect the oxygen concentration and sulfur hexafluoride gas concentration. When the changes in the concentration values ​​of the two are harmful to the human body, the air in the station needs to be removed and updated. Reduce the sulfur hexafluoride concentration and increase the oxygen concentration.

[0060] The second gas sensor is installed at the high-voltage side equipment in the power distribution room. The second gas sensor is used to obtain the ozone concentration signal on the high-voltage side of the power distribution room. When the corona phenomenon occurs in the power distribution station, part of the oxygen in the air will be converted into ozone. The purpose of the second gas sensor provided in this embodiment to detect the ozone concentration is to promptly detect the corona phenomenon occurring in the power distribution station. And timely deal with the dangerous state and adjust the working parameters of the power equipment.

[0061] The smoke sensor is installed above the transformer in the power distribution room. The smoke sensor is used to obtain the smoke concentration signal at the transformer. The noise sensor is installed on the transformer equipment in the power distribution room. The noise sensor is used to detect the equipment noise signal when the transformer is working.

[0062] The transformer is the area in the station building that is most prone to fire. In this embodiment, smoke sensors and noise sensors are installed around the transformer. Using the information collected by the above devices, the intelligent fusion terminal combines the operating parameters of the transformer, the smoke detection signal and the equipment operating noise to more accurately determine the fire risk status during the equipment operation. At the same time, the noise sensor itself is also a sensing device that monitors the operating parameters of the transformer. There is a correlation between the noise during the operation of the transformer and the operating status of the equipment.

[0063] During the operation of the equipment, the noise sensor sends the sound signals collected around the transformer to the intelligent fusion terminal, which analyzes the transformer operation status based on the sound signals. When abnormal noise appears in the collected sound signals, an alarm signal representing the transformer failure is sent to the main station server. The intelligent fusion terminal also extracts the environmental noise from the collected sound signals, and generates a fire warning signal to determine whether there is a fire risk based on the waveform fit between the environmental noise and the preset fire scene environmental noise.

[0064] Waterproofing the distribution station is a key safety control measure. If the distribution station leaks, the equipment may be soaked in water, short-circuited or damaged. Therefore, this embodiment uses a water immersion sensor to detect water leakage in the station. The water immersion sensor is installed at the water guide trough in the distribution room. The water immersion sensor is used to obtain the water level in the water guide trough, and then generate a water leakage alarm signal when the detected real-time water level reaches the preset target water level. When a water leakage alarm occurs in the station, the operation and maintenance personnel should be notified to check in time. After verifying the situation, the operation and maintenance personnel should disconnect the affected power equipment and turn on the drainage equipment in the station.

[0065] The door motion sensor is installed on the door in the power distribution room. The door motion sensor is used to detect the switch status of each door in the power distribution room. The power distribution station room is a special equipment place, so closed management should be implemented in the management process. In this embodiment, a door motion sensor is installed on the door of the power distribution room, and a door opening sensor is used to detect whether an intrusion occurs in the station room. The intrusion detection logic of the system provided by this embodiment is that the system of this embodiment requires that the operation and maintenance personnel need to send an operation and maintenance request to the main station server before entering the power distribution room. After the main station server responds to the request, the operation and maintenance personnel are allowed to enter the power distribution room to carry out operations. At this time, when the door of the power distribution room is opened, it is immediately verified with the main station server whether the operation and maintenance request of the operation and maintenance personnel has been received in advance. If so, it means that the operation and maintenance personnel opened the door of the power distribution station room, and the operation and maintenance personnel should be allowed to enter at this time. At the same time, the intelligent fusion terminal can also traverse for the operation and maintenance personnel, such as actively executing the action of turning on the light. On the contrary, when the door is opened and the main station server does not receive the operation and maintenance request from the operation and maintenance personnel, it means that the person entering the distribution station is not an operation and maintenance personnel. At this time, the intelligent fusion terminal determines that an outsider has intruded into the distribution station and issues a corresponding alarm.

[0066] The power distribution station includes a large number of devices with working voltages above 10KV. These devices may generate ultra-high frequency partial discharges during operation. This high-frequency electromagnetic wave signal may interfere with or directly damage the operation of other equipment in the power distribution station. Therefore, it is necessary to monitor the high-frequency local electromagnetic waves in the power distribution station room. The present embodiment detects the electromagnetic wave signals of high-frequency discharges in the power distribution station room through a space partial discharge sensor. The space partial discharge sensor is installed in the power distribution room, and the installation height of the space partial discharge sensor is greater than the top of the switch cabinet.

[0067] In particular, the spatial partial discharge sensor in the power distribution room of this embodiment is installed near the switch cabinets with voltage levels of 10KV and above and their internal high-voltage equipment. Then the partial discharge of these equipment is monitored online, the partial discharge amplitude and number of pulses at the monitoring point are displayed in real time, and the spectrum and discharge trend of the electromagnetic wave signal are displayed. The insulation defects of the switch cabinet are discovered in time, and a judgment basis is provided for evaluating its insulation level and aging degree, so as to assist the maintenance of the switch cabinet.

[0068] The intelligent fusion terminal provided in this embodiment is mainly used in the intelligent station monitoring system to: (1) collect temperature signals of each detection point and determine whether the real-time temperature of each detection point exceeds the respective preset warning value. When the number of detection points whose temperature exceeds the warning value is greater than a preset value and the average temperature of all detection points is greater than a high temperature preset value, a control signal is sent to the air conditioner controller to start the cooling mode of the air conditioner to cool down the distribution room. (2) Collect humidity signals of each detection point and determine whether the real-time humidity of each detection point exceeds the respective preset warning value. When the number of detection points whose humidity exceeds the warning value is greater than a preset value, a control signal is sent to the dehumidifier controller to start the dehumidifier to dehumidify the inside of the distribution room. (3) Collect oxygen concentration signals, sulfur hexafluoride concentration signals and smoke concentration signals in the distribution room, and when the oxygen concentration in the station room is lower than a preset low concentration critical value, or the sulfur hexafluoride concentration is higher than a preset high concentration critical value, or the smoke concentration is higher than a preset high concentration critical value, a start command is sent to the fan controller to remove and update the air in the station. (4) Collect the ozone concentration signal at the high-voltage side equipment in the station, and report a corona alarm signal to the main station when the ozone concentration signal is higher than a warning value. (5) Determine whether there is a fire risk at the equipment based on the smoke concentration signal and noise signal at the transformer. If so, report a fire warning signal to the main station and turn on the alarm. (6) Collect the water leakage alarm signal generated by the water immersion sensor and report it to the main station, and turn on the alarm. (7) Collect the partial discharge electromagnetic wave signal generated in the station, and report a partial discharge alarm signal to the main station when the partial discharge electromagnetic signal exceeds the preset warning interval. (8) Collect the switch status signal of the door motion sensor, and when any door status changes from closed to open, obtain the operation and maintenance request reported in advance by the management personnel from the main station: when the operation and maintenance request is successfully obtained, an opening command will be issued to the lighting switch; otherwise, an intrusion alarm command will be reported to the main station and the alarm will be turned on.

[0069] In this embodiment, the intelligent fusion terminal and the data center of the main station server upload data through the IOT platform, and use the MQTT protocol for interactive communication, and then upload the various status signals in the station room detected by the temperature and humidity sensor group, the first gas sensor, the second gas sensor, the smoke sensor, the noise sensor, the water immersion sensor, the door movement sensor, and the space partial discharge sensor to the main station server. The data center classifies and stores the received status signals, and when the main station server receives a station room operation status query request issued by the management personnel, it responds to the relevant request, screens and displays the monitoring data of the environment or equipment in the station room.

[0070] The alarm in this embodiment adopts an audible and visual alarm. When the intelligent fusion terminal determines that any fault or dangerous state occurs in the station house, a dedicated alarm signal is generated and sent to the audible and visual alarm. The audible and visual alarm emits different voices, sounds, and / or flashing lights according to different types of alarm signals.

[0071] Example 2

[0072] This embodiment also provides an intelligent station monitoring method based on an intelligent fusion terminal, which is applied to an intelligent station monitoring system based on an intelligent fusion terminal in Embodiment 1, thereby realizing station environment monitoring, equipment operation status monitoring, security and fault alarm, and equipment status linkage control functions. Figure 2 As shown in the figure, the implementation process of each function in the intelligent station house monitoring method includes the following contents:

[0073] 1. Station building environment monitoring

[0074] 1. Detect the ambient temperature and humidity inside the substation, and send the device identification number of the temperature and humidity sensor and the corresponding detection value to the intelligent fusion terminal. The intelligent fusion terminal uploads the detection results to the main station server, and determines whether the temperature and humidity values ​​of each detection point exceed their respective preset warning values, and uploads a corresponding temperature and humidity alarm signal when the detection result exceeds the limit.

[0075] 2. Detect the oxygen concentration and sulfur hexafluoride gas concentration in the distribution station room, and send the corresponding detection values ​​to the intelligent fusion terminal. The intelligent fusion terminal uploads the detection results to the main station server, and determines whether the gas concentration of each detection point exceeds the preset warning value, and uploads a corresponding gas pollution alarm signal when the detection result exceeds the limit.

[0076] 3. Detect the smoke concentration in the distribution station and the environmental noise information around the transformer, and send the detection results to the intelligent fusion terminal. The intelligent fusion terminal uploads the detection results to the main station server, and determines whether there is a fire risk in the station based on the detection results. If so, it reports a fire warning signal to the main station server.

[0077] 4. Collect the water level signal in the water tank of the power distribution room and send the test results to the intelligent fusion terminal. When the intelligent fusion terminal determines that there is water immersion in the water tank based on the test results, it uploads a water leakage alarm signal to the main station server.

[0078] 5. Collect the partial discharge electromagnetic wave signals generated in the station and send the detection results to the intelligent fusion terminal. When the intelligent fusion terminal determines whether the partial discharge electromagnetic signal in the station exceeds the preset warning range, it reports a partial discharge alarm signal to the main station server.

[0079] 2. Equipment operation status monitoring

[0080] 1. Obtain equipment noise information at the transformer and send the equipment noise signal to the intelligent fusion terminal. The intelligent fusion terminal combines the detected equipment noise information and various power signals during the operation of the transformer area to determine the operating status of the transformer and upload the determination result to the main station server.

[0081] 2. Collect the real-time temperature of the cable connection pile in the switch cabinet and send the detected temperature to the intelligent fusion terminal. The intelligent fusion terminal determines the operating status of the switchgear according to the equipment temperature, ambient temperature, and various power signals during the operation of the substation, and uploads the judgment result to the main station server.

[0082] 3. Collect the ozone concentration at the high-voltage side equipment and send the test results to the intelligent fusion terminal. The intelligent fusion terminal determines whether the ozone concentration is higher than a preset concentration upper limit, and reports a corona alarm signal to the main station server.

[0083] 3. Security and Fault Alarm

[0084] 1. Collect the switch status signals of each door in the power distribution room, and when the state of any door changes from closed to open, obtain the operation and maintenance request reported in advance by the management personnel from the main station; when the operation and maintenance request fails to be obtained, report an intrusion alarm instruction to the main station.

[0085] 2. When generating fire warning signals, water leakage alarm signals, partial discharge alarm signals, corona alarm signals and intrusion alarm signals, the intelligent fusion terminal sends corresponding control instructions to the alarm to drive the alarm to operate.

[0086] In this embodiment, when the alarm in the station house is running due to any fault condition, the operation and maintenance management personnel handles the fault condition occurring in the station house, and uploads a fault clearing notification to the main station server after the processing is completed. After receiving the fault clearing notification, the main station server issues a stop operation control command to the alarm through the intelligent management terminal, and the alarm is turned off after receiving the command.

[0087] 4. Equipment status linkage control

[0088] 1. Collect temperature signals from each detection point inside the station room to determine whether the real-time temperature of each detection point exceeds the preset warning value. When the number of detection points with temperatures exceeding the warning value is greater than a preset value and the average temperature of all detection points is greater than a high temperature preset value, a control signal is sent to the air conditioning controller to turn on the cooling mode of the air conditioner to cool down the distribution room.

[0089] 2. Collect humidity signals from each detection point to determine whether the real-time humidity at each detection point exceeds the preset warning value. When the number of detection points where the humidity exceeds the warning value is greater than a preset value, a control signal is sent to the dehumidifier controller to start the dehumidifier to dehumidify the inside of the power distribution room.

[0090] 3. Collect the oxygen concentration signal, sulfur hexafluoride concentration signal and smoke concentration signal in the distribution room; and when the oxygen concentration in the station room is lower than a preset low concentration critical value, or the sulfur hexafluoride concentration is higher than a preset high concentration critical value, or the smoke concentration is higher than a preset high concentration critical value, send an open command to the fan controller to remove and update the air in the station.

[0091] 4. Collect the switch status signal of the door motion sensor, and when any door status changes from closed to open, obtain the operation and maintenance request reported in advance by the management personnel from the main station. When the operation and maintenance request is successfully obtained, an opening command will be issued to the lighting switch.

[0092] In this embodiment, during the linkage control of the equipment status, when the air conditioner is in the cooling state, when the real-time temperature of all detection points is less than the respective preset low temperature warning values, the air conditioner is turned off. When the dehumidifier is in operation, when the real-time humidity of all detection points is lower than a preset warning value, the dehumidifier stops running. During the operation of the fan, when the oxygen concentration in the station room is higher than a preset high concentration critical value, and the sulfur hexafluoride concentration and the smoke concentration are lower than the respective preset low concentration critical values, the fan stops running. When the lighting switch inside the station room is turned on, when the intelligent fusion terminal receives the notification from the main station server that the operation and maintenance manager has completed the operation and maintenance, and the switch state signal of the door motion sensor changes from on to off, the lighting switch is turned off.

[0093] This embodiment can integrate the monitoring functions of temperature, humidity, gas pollutants, water leakage, corona, noise, fire, partial discharge and other conditions or faults inside the distribution station into the intelligent fusion terminal. The intelligent fusion terminal monitors the environment and equipment operating status inside the distribution station, and dynamically adjusts the operating status of the equipment in the station according to the monitoring results.

[0094] The advantage of the monitoring method of this embodiment is that it can realize fully automatic monitoring of the station environment and dynamically adjust the operating status of the equipment in the station without manual intervention. The intelligent fusion terminal is a local device, which has a faster response speed during abnormal handling and higher management efficiency for the distribution station. At the same time, the monitoring method can also upload the monitoring data and management data to the master station server in the cloud to assist the distribution master station in managing and scheduling the operating status of the equipment on the distribution station site.

[0095] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An intelligent station monitoring system based on intelligent fusion terminal, characterized in that: It includes: A temperature and humidity sensor group, comprising a temperature detection unit and a humidity detection unit; the temperature detection unit is installed at multiple locations in the power distribution room and in each switch cabinet, and the humidity detection unit is installed at multiple locations in the power distribution room; the temperature and humidity sensor group is used to detect real-time temperature and humidity signals at the installation location; A first gas sensor installed in the power distribution room; the first gas sensor is used to obtain a real-time oxygen concentration signal and a sulfur hexafluoride gas concentration signal in the power distribution room; A second gas sensor is installed at a high-voltage side device in the power distribution room; the second gas sensor is used to obtain an ozone concentration signal on the high-voltage side of the power distribution room; A smoke sensor is installed above the transformer in the power distribution room; the smoke sensor is used to obtain a smoke concentration signal at the transformer; A noise sensor is installed on the transformer equipment in the power distribution room; the noise sensor is used to detect the equipment noise signal when the transformer is working; A water immersion sensor is installed at the water channel in the power distribution room; the water immersion sensor is used to obtain the water level in the water channel, and then generate a water leakage alarm signal when the detected real-time water level reaches a preset target water level; A door motion sensor is installed on the door in the power distribution room; the door motion sensor is used to detect the switch status of each door in the power distribution room; A spatial partial discharge sensor is installed in the power distribution room at a position higher than the switch cabinet, and is used to collect high-frequency partial discharge electromagnetic wave signals in the space in the power distribution room; as well as An intelligent fusion terminal is connected in communication with the temperature and humidity sensor group, the first gas sensor, the second gas sensor, the smoke sensor, the noise sensor, the water immersion sensor, the door movement sensor, and the space partial discharge sensor, thereby acquiring various status signals in the station house collected by the collection device; the intelligent fusion terminal is electrically connected to the air-conditioning controller, the dehumidifier controller, the fan controller, the lighting switch, and the alarm in the station house, thereby issuing corresponding control signals to each connected execution device according to the collected environment or equipment operation status in the station house; the intelligent fusion terminal is also connected in communication with the power distribution master station, thereby reporting the acquired status signals and the issued control signals to the master station server of the power distribution master station; the intelligent fusion terminal is used to: (1) collect temperature signals at each detection point and determine whether the real-time temperature of each detection point exceeds the respective preset warning value; When the number of detection points where the temperature exceeds the warning value is greater than a preset value and the average temperature of all detection points is greater than a high temperature preset value, a control signal is sent to the air conditioning controller to start the air conditioning cooling mode to cool the distribution room; (2) the humidity signal of each detection point is collected to determine whether the real-time humidity of each detection point exceeds the respective preset warning value; and when the number of detection points where the humidity exceeds the warning value is greater than a preset value, a control signal is sent to the dehumidifier controller to start the dehumidifier to dehumidify the inside of the distribution room; (3) the oxygen concentration signal, sulfur hexafluoride concentration signal and smoke concentration signal in the distribution room are collected, and when the oxygen concentration in the station room is lower than a preset low concentration critical value, or the sulfur hexafluoride concentration is higher than a preset high concentration critical value, or the smoke concentration is higher than a preset high concentration critical value, a start command is sent to the fan controller to remove and update the air in the station; (4) the station is collected (5) Determine whether there is a fire risk at the equipment based on the smoke concentration signal and noise signal at the transformer. If so, report a fire warning signal to the main station and turn on the alarm. (6) Collect the water leakage alarm signal generated by the water immersion sensor and report it to the main station, and turn on the alarm. (7) Collect the partial discharge electromagnetic wave signal generated in the station and report a partial discharge alarm signal to the main station when the partial discharge electromagnetic signal exceeds the preset warning interval. (8) Collect the switch status signal of the door motion sensor and obtain the operation and maintenance request reported in advance by the management personnel from the main station when any door status changes from closed to open. When the operation and maintenance request is successfully obtained, an opening command will be issued to the lighting switch. Otherwise, an intrusion alarm command will be reported to the main station and the alarm will be turned on.

2. The intelligent station house monitoring system based on the intelligent fusion terminal according to claim 1, characterized in that: Any one or more of the temperature and humidity sensor group, the first gas sensor, the second gas sensor, the smoke sensor, the noise sensor, the water immersion sensor, the door movement sensor, and the space partial discharge sensor are communicatively connected to the intelligent fusion terminal via a multi-mode wireless communication; when multi-mode wireless communication is adopted, the temperature and humidity sensor group, the first gas sensor, the second gas sensor, the smoke sensor, the noise sensor, the water immersion sensor, the door movement sensor, and the space partial discharge sensor are all connected to a multi-mode wireless communication device, and the local communication module in the intelligent fusion terminal selects a communication module with a multi-mode wireless communication function.

3. The intelligent station house monitoring system based on intelligent fusion terminal according to claim 2, characterized in that: The intelligent station house monitoring system also includes a multi-mode wireless communication module, which supports communication methods including cellular mobile communication method, wireless LAN communication method, ZigBee-based personal area network communication method, and Bluetooth communication method; the multi-mode wireless communication module switches the communication method according to the current communication environment, thereby ensuring that the status signal collected by the collection device is wirelessly transmitted to the intelligent fusion terminal in a lower power consumption mode.

4. The intelligent station house monitoring system based on intelligent fusion terminal according to claim 1, characterized in that: The intelligent fusion terminal and the main station server are connected by Ethernet or by power line-based power carrier communication.

5. The intelligent station house monitoring system based on intelligent fusion terminal according to claim 1, characterized in that: The intelligent fusion terminal and the data center of the main station server use the MQTT protocol for interactive communication, and then upload the various status signals in the station house detected by the temperature and humidity sensor group, the first gas sensor, the second gas sensor, the smoke sensor, the noise sensor, the water immersion sensor, the door movement sensor, and the space partial discharge sensor to the main station server; the data center classifies and stores the received status signals, and when the main station server receives a station house operation status query request issued by the management personnel, it responds to the relevant request, filters and displays the monitoring data of the environment or equipment in the station house.

6. The intelligent station house monitoring system based on intelligent fusion terminal according to claim 1, characterized in that: The alarm uses an audible and visual alarm. When the intelligent fusion terminal determines that any dangerous condition occurs in the station house, an exclusive alarm signal is generated and sent to the audible and visual alarm; the audible and visual alarm emits different voices, sounds, and / or flashing lights according to different types of alarm signals.

7. The intelligent station house monitoring system based on intelligent fusion terminal according to claim 1, characterized in that: The noise sensor sends the collected sound signals around the transformer to the intelligent fusion terminal, and the intelligent fusion terminal analyzes the operating status of the transformer based on the sound signals. When abnormal noise appears in the collected sound signals, an alarm signal for characterizing the transformer fault is sent to the main station server; the intelligent fusion terminal also extracts the environmental noise from the collected sound signals, and generates a fire warning signal for determining whether there is a fire risk based on the waveform fit between the environmental noise and the preset fire scene environmental noise.

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