Digital full-sensing transformer substation

Abstract

The utility model discloses a digital full-sensing transformer substation, belongs to the technical field of digital power grids, and provides a safer and more efficient digital full-sensing transformer substation which comprises a line state analyzer and an environment state analyzer, and the line state analyzer is in communication connection with a transmission information collector and a line body information collector. The transmission information collector is suitable for collecting various electrical information of transmission current in the power transmission line, and the line body information collector is suitable for collecting state information of the power transmission line; and the environment state analyzer is in communication connection with an atmosphere information collector and a biological information collector. Various metering devices, instruments and sensor components are reasonably configured in the transformer substation, so that information possibly influencing normal work of the transformer substation is collected, and the transformer substation can be well helped to prevent potential risks through step-by-step upward integration and analysis, the working stability of the transformer substation is improved, and the working efficiency of the transformer substation is improved. Meanwhile, when the transformer substation breaks down, workers can be helped to repel fault reasons.

Description

Technical Field

[0001] The present application relates to the field of digital power grid technology, and in particular to a digital full-sensing substation. Background Art

[0002] Voltage conversion is a necessary step in the process of long-distance power transmission. The substation that realizes voltage conversion is one of the important parts of the power grid. The substation is usually a group of facilities, and because there are high-voltage cables in the substation, it is necessary to set up a protective structure outside the substation group to prevent people or animals without danger awareness from entering. However, even if no people or animals enter to damage the equipment in the substation, the components in the substation may be damaged. For example, if the substation cannot work normally due to strong winds or earthquakes, staff will need to go in for inspection and maintenance. The existing method relies almost entirely on the staff's investigation, which is relatively inefficient and has a relatively high risk factor. Summary of the invention

[0003] The purpose of this application is to provide a safer and more efficient digital full-sensing substation.

[0004] To achieve the above objectives, the present application provides a digital fully-sensing substation: including a line status analyzer and an environmental status analyzer, wherein the line status analyzer is communicatively connected to a transmission information collector and a line body information collector, wherein the transmission information collector is suitable for collecting various electrical information of the transmission current in the transmission line, and the line body information collector is suitable for collecting the status information of the transmission line itself; the environmental status analyzer is communicatively connected to an atmospheric information collector and a biological information collector, wherein the atmospheric information collector is suitable for collecting various parameters of the surrounding air environment, and the biological information collector is suitable for identifying the movements of people, animals and plants in the substation, and the line status analyzer and the environmental status analyzer are jointly communicatively connected to a central monitoring and alarm station, and a substation is responsible for at least one central monitoring and alarm station, and a central monitoring and alarm station can be responsible for multiple substations at the same time. For large substations, in order to ensure reliability and timeliness, the central monitoring and alarm station is usually not shared with other substations. Only small substations will share the central monitoring and alarm station for cost considerations.

[0005] As a preferred embodiment, the transport information collector is communicatively connected to a digital voltmeter, a digital ammeter and a digital frequency meter, the two detection ends of the digital voltmeter are respectively located at the two ends of the detected line, the digital ammeter and the digital frequency meter are connected in series in the detected line and close to the cable bracket, so as to facilitate configuration and detection.

[0006] As a preferred embodiment, the digital voltmeter and digital ammeter are arranged in groups in the main line and each branch line, which are suitable for detecting the resistance of the main line and the branch line. The actual resistance value obtained by the detection is used as a reference to help the system determine the state of the line.

[0007] As a preferred embodiment, the wire body information collector is communicatively connected to a tension sensor, a vibration sensor and a temperature sensor, so as to obtain the mechanical or thermal information of the wire body itself.

[0008] As a preferred embodiment, the tension sensor is connected between the detected wire and the cable bracket, the vibration sensor is sleeved on the detected wire at a position between the two cable brackets, and the temperature sensor is sleeved outside the detected wire and close to the cable bracket supporting the detected wire to directly obtain the temperature parameters of the wire itself.

[0009] As a preferred embodiment, the atmospheric information collector is communicatively connected with a temperature detector, a humidity detector, an anemometer and an air quality detector. The temperature detector, humidity detector, anemometer and air quality detector are all arranged on a cable bracket supporting the detected line body, so as to facilitate wiring and installation.

[0010] As a preferred embodiment, the anemometer is fixedly connected to the highest point of the cable bracket, and the air quality detector is fixedly connected to a position on the cable bracket lower than the detected wire body, and is more targeted at detecting the air impurity content between the detection wire body and the ground.

[0011] As a preferred embodiment, the bio-information collector is communicatively connected to an aerial camera and a ground camera, the aerial camera is arranged at the highest point of a cable bracket, the ground camera is arranged on the cable bracket, and the height of the ground camera is lower than the lowest point of the wire on the cable bracket; the bio-information collector has an image object distinction program and an image motion recognition program, which require the application of technologies in the field of big data models.

[0012] Compared with the prior art, the beneficial effects of this application are:

[0013] (1) By properly configuring a variety of meters, instruments and sensor components in the substation, all information that may affect the normal operation of the substation is collected and integrated and analyzed step by step, which can help the substation prevent potential risks and improve the working stability of the substation. At the same time, it can help the staff to eliminate the cause of the fault when the substation fails. Therefore, the application of digitalization in the substation equipment group is more efficient and safe;

[0014] (2) By modularizing and grading the digital full-perception system, the collection, organization, and analysis of information are more organized and hierarchical, making it easier to trace the source of the problem. In addition, the computing requirements are decomposed level by level, reducing the computing intensity of each level. The computing power requirements of the equipment at each level are lower, and the cost and difficulty of configuring the digital full-perception system are also lower. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the connection relationship between various functional devices in the digital full-sensing substation.

[0016] The diagram includes: a central monitoring alarm station; line status analyzer, environmental status analyzer; transport information collector, line information collector, atmospheric information collector, biological information collector; and a variety of metering instruments, sensors, cameras and other information collection equipment. DETAILED DESCRIPTION

[0017] Below, the present application is further described in conjunction with specific implementation methods. It should be noted that, under the premise of no conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.

[0018] In the description of the present application, it should be noted that directional words, such as the terms "center", "lateral", "longitudinal", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", etc., indicating directions and positional relationships are based on the directions or positional relationships shown in the accompanying drawings, which are only for the convenience of narrating the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and cannot be understood as limiting the specific scope of protection of the present application.

[0019] It should be noted that the terms "first", "second", etc. in the description and claims of the present application are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence.

[0020] The terms "including" and "having" and any variations thereof in the specification and claims of this application are intended to cover non-exclusive inclusions. For example, a process, method, system, product or apparatus comprising a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to these processes, methods, products or apparatuses.

[0021] like Figure 1The digital full-sensing substation shown in the figure includes a line status analyzer and an environmental status analyzer, which are actually the two main modules of the full-sensing substation system. The line status analyzer is aimed at the information collection and analysis of the entire substation line itself, while the environmental status analyzer is aimed at the information collection and analysis of the environment in which the substation is located. The line status analyzer and the environmental status analyzer are connected to the central monitoring and alarm station for communication. This is a terminal that directly interacts with people and can obtain important information about the substation itself and the environment. However, if anomalies occur in these information and may affect the normal operation of the substation, the central monitoring and alarm station will issue a warning message to help relevant persons in charge to handle the anomalies, thereby improving the speed of the substation in responding to failures or possible failures, thereby ensuring the working stability of the substation.

[0022] The line status analyzer is communicatively connected with a transmission information collector and a line body information collector, which are two branch modules of the line status analyzer. The transmission information collector is responsible for collecting various electrical information of the transmission current in the transmission line. Therefore, the transmission information collector is communicatively connected with a digital voltmeter, a digital ammeter and a digital frequency meter. The two detection ends of the digital voltmeter are respectively located at the two ends of the detected line, and are used to check whether the potential at both ends of the line is within the normal threshold range. When the detected potential difference is too large, it means that there may be a broken wire or the switch is not closed in the middle of the detected line, which can help the line status analyzer determine the state of the line. The digital ammeter and the digital frequency meter are connected in series in the detected line and close to the cable bracket. In fact, the digital ammeter and the digital frequency meter can be used at any position of the measured line, but for the convenience of installation and configuration , usually set up near the cable bracket to facilitate workers to install and disassemble, especially when the meter needs to be replaced, the digital voltmeter and digital ammeter are set in groups in the main line and each branch line, and the two can detect the resistance of the main line and the branch line. The resistance value can more clearly reflect the state of the line, because if the line is broken in the middle, the resistance value will be very large. Even if both ends of the break are grounded and energized, the change in resistance value is also very obvious. Other factors, such as the temperature of the metal wire body, will also affect the resistivity of the line, but this effect is relatively small and usually only affects the power transmission efficiency of the line. Therefore, by changing the line resistance, it is possible to judge with a high probability whether the line is damaged or broken or the temperature is too high without the presence of workers. The staff of the substation can get better prompts and make corresponding preparations, effectively reducing useless work;

[0023] The line information collector is used to collect the status information of the transmission line itself, that is, the physical information of the metal conductor itself. The line information collector is connected to the tension sensor, vibration sensor and temperature sensor. The tension sensor is connected between the detected line and the cable bracket. By obtaining the upward or downward force applied by the detected line, the change of tension along the extension direction of the line is indirectly known. If the force detected by the tension sensor is too large, it means that the tension on the line is relatively large, and the line is at risk of breaking and the cable bracket is at risk of being crushed; if the force detected by the tension sensor changes greatly, it means that the line may be swinging and the line is at risk of falling off the cable bracket. The vibration sensor is placed on the position where the detected line is located between the two cable brackets, because if the line swings, the swing amplitude in the middle suspended position is the largest. Swinging is simply a low-frequency vibration that will be detected by the vibration sensor. On the other hand, if High-frequency, low-amplitude vibrations of the wire body will also be detected. Since the vibration sensor is relatively far from the cable bracket, it is not realistic to configure power lines and signal lines. Therefore, the vibration sensor is usually equipped with a solar panel or a swing energy storage mechanism as a power source, and the signal is transmitted through wireless communication. This is completely feasible in theory and practice, but this part of the content is not the focus of this application, and it is all prior art, so it will not be described in detail here. Because the conductive wire body is made of metal with uniform material and has good thermal conductivity, the temperature of each part of the material is almost the same in the atmospheric environment, so the temperature sensor can be put on the outside of the wire body to be detected and close to the cable bracket supporting the wire body to be detected, which is convenient for the installation and configuration of the temperature sensor. By detecting the stability of the wire body itself, and combining the actual resistance value measured by the digital voltmeter and the digital ammeter, and comparing it with the temperature resistance curve of the wire body material, it can be determined whether the increase in resistance of the conductive wire body is caused by breakage or temperature rise.

[0024] The environmental status analyzer is connected to the atmospheric information collector and the biological information collector. The atmospheric information collector has a relatively mature way of obtaining information, while the biological information collector requires a relatively complex intelligent program. This intelligent program already exists in the prior art and can be used directly. Specifically: the atmospheric information collector is used to collect various parameters in the surrounding air environment that may affect the operation of the substation, and it is not necessary to collect all parameters of the atmospheric environment. Under normal circumstances, the atmospheric information collector will be connected to the temperature detector, humidity detector, wind speed detector and air quality detector. The temperature detector is used for the ambient temperature. Combined with the information obtained by the temperature sensor under the wire information collector, it can be determined whether the reason for the temperature rise of the conductive wire is that the ambient temperature is too high or the power transmission heat is too high. If the power transmission heat is too high, the power transmission power needs to be reduced; if the ambient temperature is too high, there is no need to reduce the power transmission power. The humidity detector is used to detect the air humidity, and the air quality detector is used to detect the concentration of conductive impurities in the air. The combination of the two can help the environmental status analyzer infer the breakdown voltage from the exposed wire to the ground, thereby limiting the maximum conversion voltage of the substation to reduce the arc generation. Risk, of course, how to judge the breakdown probability according to the environmental humidity and impurity concentration is a mathematical model, which is difficult to describe in detail. Here, we only need to know that they are related. The temperature detector, humidity detector, anemometer and air quality detector do not need to be set on the line body, but are usually set on the cable bracket supporting the detected line body for easy configuration. In order to improve the accuracy of the anemometer, the setting position of the anemometer should be as little blocked as possible. Usually, the anemometer is fixedly connected to the highest point of the cable bracket, and the wind above will be a little stronger, so that the wind strength can be felt earlier than the line body. Combined with the information obtained by the tension sensor and vibration sensor on the line body, it can be accurately judged whether the cause of the vibration or swing of the line body is from the ground or caused by wind. The air quality detector is fixedly connected to the cable bracket below the position of the detected line body, that is, close to the ground where the cable bracket is installed, because usually, the closer to the bottom, the higher the concentration of impurities in the air, and the purpose of obtaining these data is to prevent the breakdown between the exposed line body and the ground. It is very suitable for the air quality detector to be located in this height range.

[0025] The biological information collector is connected to the communication with the high-altitude camera and the ground camera, which are actually surveillance cameras, but the difference is that the high-altitude camera and the ground camera will transmit the acquired images to the biological information collector. The biological information collector has an image object distinction program and an image motion recognition program. The biological information collector can identify the movements of people, animals and plants in the substation. For example, when an animal breaks into the substation, the biological information collector will transmit the early warning signal to the central monitoring alarm station through the environmental status analyzer, and the central monitoring station will send an alarm signal to the loudspeaker in the substation, using the alarm sound to drive away the intruding animals. Of course, this kind of expulsion also applies to people; when If the staff in the substation fail to properly distribute the safety protection equipment, it will be analyzed by the biometric information collector and then informed to the central monitoring alarm station. The person in charge in the central control room will remind the staff in the substation to perform their work in a standardized manner. If trees in or around the substation fall and press on the wires or cable supports, or if plastic bags are hung on the high-hanging wires, the cameras will also observe them, and the biometric information collector will analyze and classify them as high-risk obstacles, and inform the central monitoring alarm station for timely processing. How the biometric information collector identifies these objects belongs to the field of big data models and is part of the existing technology. Due to limited space, it will not be introduced here.

[0026] Aerial cameras are usually installed at the highest point of the cable support, or mounted on drones for patrol and surveillance, but the latter is more expensive and difficult, so the former is usually used. Anyway, they all overlook the general situation in the substation from a high place. Ground cameras are installed on cable supports, which are closer to the ground. Although the range is a bit smaller, the monitoring area that can be covered is clearer than that of aerial cameras. The focus of the two is not the same. Aerial cameras are more focused on the overall situation in the substation, and ground cameras are more focused on the details in the substation. Therefore, there are many fewer aerial cameras than ground cameras. For small substations, there may be only one aerial camera, but at least one is required. The height of the ground camera is lower than the lowest point of the wire on the cable support to avoid the suspended wire blocking the line of sight of the ground camera and creating a blind spot.

[0027] Working principle: Various instruments and sensors installed in the substation can fully obtain various data from the lines and environment in the substation that may affect the operation of the substation, and integrate and analyze the acquired information, effectively reducing the risk of substation failure and improving the working reliability and stability of the substation.

[0028] The above describes the basic principles, main features and advantages of the present application. Those skilled in the art should understand that the present application is not limited by the above embodiments, and the above embodiments and the specification only describe the principles of the present application. The present application may have various changes and improvements without departing from the spirit and scope of the present application, and these changes and improvements fall within the scope of the present application for which protection is sought. The scope of protection claimed by the present application is defined by the attached claims and their equivalents.

Claims

1. A digital full-sensing substation, characterized by: It includes a line status analyzer and an environmental status analyzer. The line status analyzer is communicatively connected with a transmission information collector and a line body information collector. The transmission information collector is suitable for collecting various electrical information of the transmission current in the transmission line, and the line body information collector is suitable for collecting the status information of the transmission line itself. The environmental status analyzer is communicatively connected to an atmospheric information collector and a biological information collector. The atmospheric information collector is suitable for collecting various parameters of the surrounding air environment, and the biological information collector is suitable for identifying the movements of people, animals and plants in the substation. The line status analyzer and the environmental status analyzer are communicatively connected to a central monitoring alarm station.

2. The digital full-sensing substation according to claim 1, characterized in that: The transport information collector is communicatively connected to a digital voltmeter, a digital ammeter and a digital frequency meter. The two detection ends of the digital voltmeter are respectively located at the two ends of the detected line. The digital ammeter and the digital frequency meter are connected in series in the detected line and close to the cable bracket.

3. The digital full-sensing substation according to claim 2, characterized in that: The digital voltmeter and the digital ammeter are arranged in groups in the main line and each branch line, and are suitable for detecting the resistance of the main line and the branch line.

4. The digital full-sensing substation according to any one of claims 1 to 3, characterized in that: The line information collector is communicatively connected with a tension sensor, a vibration sensor and a temperature sensor.

5. The digital full-sensing substation according to claim 4, characterized in that: The tension sensor is connected between the detected wire and the cable bracket, the vibration sensor is sleeved on the detected wire at a position between the two cable brackets, and the temperature sensor is sleeved outside the detected wire and close to the cable bracket supporting the detected wire.

6. The digital full-sensing substation according to claim 1, characterized in that: The atmospheric information collector is communicatively connected with a temperature detector, a humidity detector, an anemometer and an air quality detector, and the temperature detector, the humidity detector, the anemometer and the air quality detector are all arranged on a cable bracket supporting the detected line body.

7. The digital full-sensing substation according to claim 6, characterized in that: The wind speed detector is fixedly connected to the highest point of the cable bracket, and the air quality detector is fixedly connected to a position on the cable bracket that is lower than the detected line.

8. The digital full-sensing substation according to any one of claims 6 or 7, characterized in that: The biological information collector is connected to a high-altitude camera and a ground camera. The high-altitude camera is set at the highest point of the cable bracket. The ground camera is arranged on the cable bracket, and the height of the ground camera is lower than the lowest point of the wire body on the cable bracket; The biological information collector has an image object distinction program and an image motion recognition program.

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