Outdoor method and system for preventing accidental entry into live intervals based on non-contact voltage monitoring

Abstract

The present invention discloses an outdoor method and system for preventing accidental entry into a live interval based on non-contact voltage monitoring, which is applied to the field of intelligent power technology. The method includes: dividing a live outdoor area into multiple live interval areas; arranging a voltage monitoring device and a microwave radar at each live interval area; forming a first voltage and a second voltage; monitoring the real-time voltage; judging the live area and the power-off area according to the first voltage and the second voltage; monitoring the position of the mobile target and sending an alarm signal. The present invention uses the results of voltage monitoring and microwave radar detection to jointly form an alarm criterion, automatically realizes functions such as detection, alarm, information storage, and transmission, does not affect the operation of the equipment, does not affect the existing maintenance operation procedures, does not require special training for maintenance personnel, and does not rely on the safety awareness of maintenance personnel; at the same time, it has the function of automatic area adjustment and identification, which can effectively improve the safety of preventing accidental entry into live intervals.

Description

Technical Field

[0001] The present invention relates to the field of intelligent electrical technology, and in particular to an outdoor method and system for preventing accidental entry into a live interval based on non-contact voltage monitoring. Background Art

[0002] Substations are an indispensable part of the operation of power systems. During the maintenance of substation equipment, accidents of mistakenly entering live compartments occur from time to time, affecting the personal safety of maintenance personnel. The "five-protection locking" procedure set in the existing maintenance procedures is only effective for preventing misoperation of indoor equipment. For outdoor equipment, such as busbars, overhead lines, and most power equipment (line) terminals rely on air insulation, mistakenly entering live compartments will directly cause personal injury and death. At present, the solution to this situation is mainly to strengthen the safety awareness of maintenance personnel through education and mandatory process management, which relies heavily on the self-consciousness of maintenance personnel. Some power supply companies have also tried to use external devices to solve this problem. There are currently two main types. One is to install a safety fence, which is costly and complex to operate and maintain; the other is to equip maintenance personnel with wearable alarm equipment. This method still relies on the subjectivity of the operator and is inconvenient to operate; therefore, it is difficult to be widely promoted and used.

[0003] In the prior art, the Chinese patent application number 202211459201.9 discloses a substation operation safety management and control system and method based on indoor and outdoor fusion positioning. The system includes: indoor UWB positioning module, outdoor RTK positioning module, positioning terminal, data receiving service module, safety isolation module, data analysis and processing module, operation and inspection workbench, and operation safety management and control platform. Through the cooperation between the modules, the virtual electronic fence function is realized according to the positioning data, and the on-site staff are reminded to enter the dangerous or unauthorized area in time to avoid the wrong interval and the energized interval. The camera is linked according to the positioning data to monitor the working area in real time. It uses the electronic fence to calibrate the outdoor energized compartment, which is not sensitive enough to the voltage changes related to the substation, which is not conducive to the safety of preventing the outdoor energized compartment from entering by mistake. Summary of the invention

[0004] In order to at least overcome the above-mentioned deficiencies in the prior art, the purpose of the present application is to provide an outdoor method and system for preventing accidental entry into a live compartment based on non-contact voltage monitoring.

[0005] In a first aspect, an embodiment of the present application provides an outdoor method for preventing accidental entry into a live interval based on non-contact voltage monitoring, comprising:

[0006] Obtain the equipment location and line location of the live outdoor area of ​​the target substation;

[0007] Dividing the live outdoor area into a plurality of live interval areas according to the equipment location, the line location and the corresponding voltage;

[0008] Arrange voltage monitoring devices and microwave radars in each live compartment area;

[0009] The voltage monitoring device is calibrated to form a first voltage and a second voltage corresponding to the voltage monitoring device; the first voltage is the voltage of the voltage monitoring device when the live compartment area where the voltage monitoring device is located is de-energized and other live compartment areas are energized; the second voltage is the voltage of the voltage monitoring device when all live compartment areas are energized;

[0010] The voltage monitoring device monitors the voltage of the corresponding energized interval area in real time as the real-time voltage;

[0011] When the real-time voltage is less than or equal to the first voltage, determining that the energized interval area corresponding to the voltage monitoring device is a power-off area;

[0012] When the real-time voltage is greater than the first voltage and less than or equal to the second voltage, determining that the charged interval area corresponding to the voltage monitoring device is a charged area;

[0013] When the real-time voltage is greater than the second voltage, the charged interval area corresponding to the voltage monitoring device is corrected by the ratio of the real-time voltage and the difference voltage, and the corrected charged interval area is used as the charged area; the difference voltage is the difference between the second voltage and the first voltage;

[0014] The position of the moving target is monitored by the microwave radar, and an alarm signal is issued when the distance between the moving target and the charged area is less than a preset value.

[0015] When implementing the embodiment of the present application, it is necessary to first obtain the equipment location and line location of the live outdoor area of ​​the target substation, and then divide multiple live interval areas according to the corresponding specifications, such as dividing a 110kv line into a rectangular area with a width of 3 meters and a length of the line as the live interval area. Figure 2 , shows a schematic diagram of the layout of some outdoor equipment and lines of the substation, where the range represented by the dotted box is the live interval area corresponding to different lines and equipment. It should be understood that the live interval areas of different lines and equipment may overlap. Figure 2 The ABC in represents the ABC three-phase circuit.

[0016] In the embodiment of the present application, each charged interval area needs to be arranged with a non-contact voltage monitoring device and a microwave radar, wherein the voltage monitoring device is mainly used to monitor the electric field voltage in space, and the microwave radar is mainly used to monitor mobile targets, such as personnel and vehicles. Since the voltage monitoring device is arranged in the charged interval area, it is technically difficult to arrange all voltage monitoring devices in a completely standardized manner for the high-voltage electric field environment, and there will also be differences in the electric field environment corresponding to different lines and equipment. Therefore, in the embodiment of the present application, it is necessary to calibrate the voltage monitoring device after it is arranged, and the data after calibration is used to determine whether the subsequent area is charged and whether it needs to be adjusted. Among them, the main calibrated data are two, namely the first voltage and the second voltage. When the meanings represented by the first voltage and the second voltage are clear, those skilled in the art can understand how to calibrate, and the embodiment of the present application will not be repeated.

[0017] In the embodiment of the present application, the first voltage represents the induced voltage generated by the corresponding equipment and lines in other live intervals to the voltage monitoring device when the live interval area where the voltage monitoring device is located is powered off; and the second voltage represents the voltage monitored by the voltage monitoring device when all live interval areas are working normally. Generally speaking, the second voltage will be much larger than the first voltage. After calibrating the first voltage and the second voltage, it is necessary to determine whether the live interval area is energized and adjust the area according to the first voltage and the second voltage. Among them, since in the embodiment of the present application, the monitoring and adjustment of each live interval area is actually independently operated, the voltage monitoring device only needs to judge whether the live interval area is live according to the monitored real-time voltage; specifically, when the real-time voltage is less than or equal to the first voltage, it means that the live interval area is in a power-off state, and its voltage is generated by other live interval areas, so the live interval area is safe at this time and can be entered to perform corresponding operations; when the real-time voltage is greater than the first voltage and less than or equal to the second voltage, there may be two situations. In one case, the live interval area is powered off, but the voltage of other live interval areas exceeds the limit. At this time, it is not safe to enter the live interval area, so the area needs to be prohibited, that is, marked as a live area; in another case, there is voltage instability in the live interval area, and at this time, the area also needs to be prohibited, that is, marked as a live area. When the real-time voltage is greater than the second voltage, it means that the voltage of the live interval area has exceeded the limit. At this time, the original range of the live interval area is no longer sufficient to ensure the corresponding safety. At this time, it is necessary to expand and correct the range according to the ratio of the real-time voltage and the difference voltage to ensure safety. In the embodiment itself, when the live area is updated in real time, the microwave radar can synchronously monitor the position of the mobile target, and judge that there is a risk of mistaken entry when the distance between the mobile target and the live area is less than the preset value, and then send out a corresponding alarm signal, such as an audible and visual alarm, and record the alarm information at the same time and upload it to the mobile APP. The embodiment of the present application, through the above technical scheme, uses the results of voltage monitoring and microwave radar detection to jointly form an alarm criterion, automatically realizes the functions of detection, alarm, information storage, and transmission, does not affect the operation of the equipment, does not affect the existing maintenance operation procedures, does not require special training for maintenance personnel, and does not rely on the safety awareness of maintenance personnel; at the same time, it has the function of automatic regional adjustment and identification, which can effectively improve the safety of preventing mistaken entry into the live interval.

[0018] In a possible implementation, dividing the live outdoor area into a plurality of live interval areas according to the equipment location, the line location and the corresponding voltage includes:

[0019] Divide the corresponding equipment live interval area according to the equipment location and corresponding voltage;

[0020] The corresponding line live interval area is divided according to the line position and the corresponding voltage, and each line is divided into a separate line live interval area;

[0021] All the equipment live interval areas and the line live interval areas are regarded as the live interval areas.

[0022] In a possible implementation, the voltage monitoring device includes a signal acquisition board; arranging the voltage monitoring device at each live interval area includes:

[0023] The signal acquisition board is arranged at intervals on the device or line under test.

[0024] In a possible implementation, the live interval area is a rectangular area; and correcting the live interval area corresponding to the voltage monitoring device by the ratio of the real-time voltage and the difference voltage includes:

[0025] Obtaining the center point of the charged interval area;

[0026] Calculating the product of the width of the charged interval area and the ratio as a corrected width, and calculating the product of the length of the charged interval area and the ratio as a corrected length;

[0027] A new rectangle is constructed with the center point as the center point of the rectangle, the modified length as the length of the rectangle, and the modified width as the width of the rectangle as the modified charged interval area.

[0028] In a possible implementation, monitoring the position of a moving target by using the microwave radar includes:

[0029] Monitoring the distance and azimuth between the moving target and the microwave radar by the microwave radar;

[0030] The position of the moving target is calculated according to the position of the microwave radar, the distance and the azimuth.

[0031] In a second aspect, the embodiment of the present application further provides an outdoor anti-inadvertent entry into live compartment system based on non-contact voltage monitoring, comprising:

[0032] An acquisition unit configured to acquire a device location and a line location in a live outdoor area of ​​a target substation;

[0033] A division unit, configured to divide the live outdoor area into a plurality of live interval areas according to the equipment location, the line location and the corresponding voltage;

[0034] a deployment unit configured to deploy a voltage monitoring device and a microwave radar at each live interval area;

[0035] A calibration unit is configured to calibrate the voltage monitoring device to form a first voltage and a second voltage corresponding to the voltage monitoring device; the first voltage is the voltage of the voltage monitoring device when the live compartment area where the voltage monitoring device is located is de-energized and other live compartment areas are energized; the second voltage is the voltage of the voltage monitoring device when all live compartment areas are energized;

[0036] A monitoring unit configured to monitor the voltage of the corresponding energized interval area in real time as a real-time voltage through the voltage monitoring device;

[0037] The judgment unit is configured as follows:

[0038] When the real-time voltage is less than or equal to the first voltage, determining that the energized interval area corresponding to the voltage monitoring device is a power-off area;

[0039] When the real-time voltage is greater than the first voltage and less than or equal to the second voltage, determining that the charged interval area corresponding to the voltage monitoring device is a charged area;

[0040] When the real-time voltage is greater than the second voltage, the charged interval area corresponding to the voltage monitoring device is corrected by the ratio of the real-time voltage and the difference voltage, and the corrected charged interval area is used as the charged area; the difference voltage is the difference between the second voltage and the first voltage;

[0041] The alarm unit is configured to monitor the position of the moving target through the microwave radar and send out an alarm signal when the distance between the moving target and the charged area is less than a preset value.

[0042] In a possible implementation manner, the dividing unit is further configured to:

[0043] Divide the corresponding equipment live interval area according to the equipment location and corresponding voltage;

[0044] The corresponding line live interval area is divided according to the line position and the corresponding voltage, and each line is divided into a separate line live interval area;

[0045] All the equipment live interval areas and the line live interval areas are regarded as the live interval areas.

[0046] In a possible implementation, the voltage monitoring device includes a signal acquisition board; and the arrangement unit is further configured to:

[0047] The signal acquisition board is arranged at intervals on the device or line under test.

[0048] In a possible implementation, the charged interval area is a rectangular area; and the judging unit is further configured to:

[0049] Obtaining the center point of the charged interval area;

[0050] Calculating the product of the width of the charged interval area and the ratio as a corrected width, and calculating the product of the length of the charged interval area and the ratio as a corrected length;

[0051] A new rectangle is constructed with the center point as the center point of the rectangle, the modified length as the length of the rectangle, and the modified width as the width of the rectangle as the modified charged interval area.

[0052] In a possible implementation, the alarm unit is further configured to:

[0053] Monitoring the distance and azimuth between the moving target and the microwave radar by the microwave radar;

[0054] The position of the moving target is calculated according to the position of the microwave radar, the distance and the azimuth.

[0055] Compared with the prior art, the present invention has the following advantages and beneficial effects:

[0056] The present invention uses the results of voltage monitoring and microwave radar detection to jointly form an alarm criterion, and automatically realizes functions such as detection, alarm, information storage, and transmission, without affecting the operation of the equipment or the existing maintenance operation procedures, without requiring special training for maintenance personnel, and without relying on the safety awareness of maintenance personnel; at the same time, it has the function of automatic regional adjustment and identification, which can effectively improve the safety of preventing accidental entry into live intervals. BRIEF DESCRIPTION OF THE DRAWINGS

[0057] The drawings described herein are used to provide a further understanding of the embodiments of the present invention, constitute a part of this application, and do not constitute a limitation of the embodiments of the present invention. In the drawings:

[0058] Figure 1 This is a schematic diagram of the steps of the method of the embodiment of the present application;

[0059] Figure 2 This is a schematic diagram of the layout of some outdoor equipment and lines of the substation in the embodiment of the present application;

[0060] Figure 3 This is a schematic diagram of the structure of a voltage monitoring device according to an embodiment of the present application;

[0061] Figure 4 This is a schematic diagram of the correction of the charged interval area according to an embodiment of the present application.

[0062] Marks and corresponding parts names in the attached drawings:

[0063] 2-Signal acquisition board, 3-Shielding tube, 4-Shielding box, 5-Tested device or line. DETAILED DESCRIPTION

[0064] To make the purpose, technical scheme and advantages of the embodiment of the present application clearer, the technical scheme in the embodiment of the present application will be clearly and completely described below in conjunction with the drawings in the embodiment of the present application. It should be understood that the drawings in the present application only serve the purpose of explanation and description and are not used to limit the scope of protection of the present application. In addition, it should be understood that the schematic drawings are not drawn in real proportion. The flowchart used in this application shows the operations implemented according to some embodiments of the embodiment of the present application. It should be understood that the operations of the flowchart can be implemented out of sequence, and the steps without logical context can be reversed in order or implemented simultaneously. In addition, those skilled in the art can add one or more other operations to the flowchart under the guidance of the content of the present application, or remove one or more operations from the flowchart.

[0065] In addition, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. The components of the embodiments of the present application described and shown in the drawings here can be arranged and designed in various configurations. Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the application claimed for protection, but merely represents the selected embodiments of the present application. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without making creative work belong to the scope of protection of the present application.

[0066] Please refer to Figure 1 , which is a flow chart of an outdoor method for preventing accidental entry into a live interval based on non-contact voltage monitoring provided in an embodiment of the present invention. Furthermore, the outdoor method for preventing accidental entry into a live interval based on non-contact voltage monitoring may specifically include the contents described in the following steps S1 to S7.

[0067] S1: Obtain the equipment location and line location of the live outdoor area of ​​the target substation;

[0068] S2: Dividing the live outdoor area into a plurality of live interval areas according to the equipment location, the line location and the corresponding voltage;

[0069] S3: Arrange voltage monitoring devices and microwave radars in each live interval area;

[0070] S4: Calibrate the voltage monitoring device to form a first voltage and a second voltage corresponding to the voltage monitoring device; the first voltage is the voltage of the voltage monitoring device when the live compartment area where the voltage monitoring device is located is de-energized and other live compartment areas are energized; the second voltage is the voltage of the voltage monitoring device when all live compartment areas are energized;

[0071] S5: monitoring the voltage of the corresponding energized interval area in real time as the real-time voltage by the voltage monitoring device;

[0072] S6: when the real-time voltage is less than or equal to the first voltage, determining that the energized interval area corresponding to the voltage monitoring device is a power-off area;

[0073] When the real-time voltage is greater than the first voltage and less than or equal to the second voltage, determining that the charged interval area corresponding to the voltage monitoring device is a charged area;

[0074] When the real-time voltage is greater than the second voltage, the charged interval area corresponding to the voltage monitoring device is corrected by the ratio of the real-time voltage and the difference voltage, and the corrected charged interval area is used as the charged area; the difference voltage is the difference between the second voltage and the first voltage;

[0075] S7: The position of the moving target is monitored by the microwave radar, and an alarm signal is issued when the distance between the moving target and the charged area is less than a preset value.

[0076] When implementing the embodiment of the present application, it is necessary to first obtain the equipment location and line location of the live outdoor area of ​​the target substation, and then divide multiple live interval areas according to the corresponding specifications, such as dividing a 110kv line into a rectangular area with a width of 3 meters and a length of the line as the live interval area. Figure 2 , shows a schematic diagram of the layout of some outdoor equipment and lines of the substation, where the range represented by the dotted box is the live interval area corresponding to different lines and equipment. It should be understood that the live interval areas of different lines and equipment may overlap.

[0077] In the embodiment of the present application, each charged interval area needs to be arranged with a non-contact voltage monitoring device and a microwave radar, wherein the voltage monitoring device is mainly used to monitor the electric field voltage in space, and the microwave radar is mainly used to monitor mobile targets, such as personnel and vehicles. Since the voltage monitoring device is arranged in the charged interval area, it is technically difficult to arrange all voltage monitoring devices in a completely standardized manner for the high-voltage electric field environment, and there will also be differences in the electric field environment corresponding to different lines and equipment. Therefore, in the embodiment of the present application, it is necessary to calibrate the voltage monitoring device after it is arranged, and the data after calibration is used to determine whether the subsequent area is charged and whether it needs to be adjusted. Among them, the main calibrated data are two, namely the first voltage and the second voltage. When the meanings represented by the first voltage and the second voltage are clear, those skilled in the art can understand how to calibrate, and the embodiment of the present application will not be repeated.

[0078] In the embodiment of the present application, the first voltage represents the induced voltage generated by the corresponding equipment and lines in other live intervals to the voltage monitoring device when the live interval area where the voltage monitoring device is located is powered off; and the second voltage represents the voltage monitored by the voltage monitoring device when all live interval areas are working normally. Generally speaking, the second voltage will be much larger than the first voltage. After calibrating the first voltage and the second voltage, it is necessary to determine whether the live interval area is energized and adjust the area according to the first voltage and the second voltage. Among them, since in the embodiment of the present application, the monitoring and adjustment of each live interval area is actually independently operated, the voltage monitoring device only needs to judge whether the live interval area is live according to the monitored real-time voltage; specifically, when the real-time voltage is less than or equal to the first voltage, it means that the live interval area is in a power-off state, and its voltage is generated by other live interval areas, so the live interval area is safe at this time and can be entered to perform corresponding operations; when the real-time voltage is greater than the first voltage and less than or equal to the second voltage, there may be two situations. In one case, the live interval area is powered off, but the voltage of other live interval areas exceeds the limit. At this time, it is not safe to enter the live interval area, so the area needs to be prohibited, that is, marked as a live area; in another case, there is voltage instability in the live interval area, and at this time, the area also needs to be prohibited, that is, marked as a live area. When the real-time voltage is greater than the second voltage, it means that the voltage of the live interval area has exceeded the limit. At this time, the original range of the live interval area is no longer sufficient to ensure the corresponding safety. At this time, it is necessary to expand and correct the range according to the ratio of the real-time voltage and the difference voltage to ensure safety. In the embodiment itself, when the live area is updated in real time, the microwave radar can synchronously monitor the position of the mobile target, and judge that there is a risk of mistaken entry when the distance between the mobile target and the live area is less than the preset value, and then send out a corresponding alarm signal, such as an audible and visual alarm, and record the alarm information at the same time and upload it to the mobile APP. The embodiment of the present application, through the above technical scheme, uses the results of voltage monitoring and microwave radar detection to jointly form an alarm criterion, automatically realizes the functions of detection, alarm, information storage, and transmission, does not affect the operation of the equipment, does not affect the existing maintenance operation procedures, does not require special training for maintenance personnel, and does not rely on the safety awareness of maintenance personnel; at the same time, it has the function of automatic regional adjustment and identification, which can effectively improve the safety of preventing mistaken entry into the live interval.

[0079] In a possible implementation, dividing the live outdoor area into a plurality of live interval areas according to the equipment location, the line location and the corresponding voltage includes:

[0080] Divide the corresponding equipment live interval area according to the equipment location and corresponding voltage;

[0081] The corresponding line live interval area is divided according to the line position and the corresponding voltage, and each line is divided into a separate line live interval area;

[0082] All the equipment live interval areas and the line live interval areas are regarded as the live interval areas.

[0083] When implementing the embodiments of this application, please refer to Figure 2 , shows a specific live interval area division scheme, in which the live interval areas corresponding to each device or line are independently set and do not affect each other. Even if there are overlapping areas, they are independently judged in the subsequent intrusion judgment. The division of specific live interval areas can be carried out according to the corresponding plan, and the embodiments of this application do not make much limitation. For three-phase lines, each phase needs to be divided into a separate live interval area of ​​the line to ensure the accuracy of voltage identification.

[0084] In a possible implementation, the voltage monitoring device includes a signal acquisition board 2; and arranging a voltage monitoring device at each live interval area includes:

[0085] The signal acquisition board 2 is arranged at intervals on the device or line 5 under test.

[0086] When implementing the embodiments of this application, please refer to Figure 3 , shows a specific voltage monitoring device structure, wherein the voltage monitoring device includes a signal acquisition board 2, a shielding tube 3 and a shielding box 4; wherein the signal acquisition board 2 needs to maintain a certain distance from the device or line 5 under test to form a capacitor. The shielding tube 3 is used for routing, and the shielding box 4 is set on the ground, loaded with electronic equipment and microwave radar for calculation. In actual use, the signal acquisition board 2 preferably uses a printed circuit board with copper foil as a non-contact voltage acquisition probe. When the shape and position of the signal acquisition board 2 are fixed, the current flowing through the above-mentioned coupling capacitor is positively correlated with the voltage value in the device or line 5 under test, so the voltage value in the device or line 5 under test can be measured by measuring the coupling capacitor value.

[0087] In a possible implementation, the live interval area is a rectangular area; and correcting the live interval area corresponding to the voltage monitoring device by the ratio of the real-time voltage and the difference voltage includes:

[0088] Obtaining the center point of the charged interval area;

[0089] Calculating the product of the width of the charged interval area and the ratio as a corrected width, and calculating the product of the length of the charged interval area and the ratio as a corrected length;

[0090] A new rectangle is constructed with the center point as the center point of the rectangle, the modified length as the length of the rectangle, and the modified width as the width of the rectangle as the modified charged interval area.

[0091] When implementing the embodiments of this application, please refer to Figure 4 The correction of the live interval area mainly expands the live interval area in equal proportion, where the expansion is based on the ratio of the real-time voltage and the differential voltage. Generally speaking, the live interval area is set to a rectangle. At this time, it is necessary to obtain the center point of the live interval area and correct the width and length of the live interval area while keeping the center point unchanged. The correction ratio is the ratio of the real-time voltage and the differential voltage. In this way, the real-time live interval area range can be more accurately planned when the voltage exceeds the limit, thereby effectively ensuring that the corresponding live interval area range can be accurately planned when the voltage of the corresponding equipment or line exceeds the limit, thereby improving safety.

[0092] In a possible implementation, monitoring the position of a moving target by using the microwave radar includes:

[0093] Monitoring the distance and azimuth between the moving target and the microwave radar by the microwave radar;

[0094] The position of the moving target is calculated according to the position of the microwave radar, the distance and the azimuth.

[0095] When the embodiment of the present application is implemented, the microwave radar can distinguish between power equipment and human body through the different intensities of reflected waves. At the same time, when the position of the microwave radar is known, the specific position of the moving target can be calculated by the distance and azimuth between the moving target and the microwave radar, so as to determine whether there is a risk of the moving target entering by mistake.

[0096] Based on the same inventive concept, the embodiment of the present application also provides an outdoor anti-inadvertent entry into live compartment system based on non-contact voltage monitoring, including:

[0097] An acquisition unit configured to acquire a device location and a line location in a live outdoor area of ​​a target substation;

[0098] A division unit, configured to divide the live outdoor area into a plurality of live interval areas according to the equipment location, the line location and the corresponding voltage;

[0099] a deployment unit configured to deploy a voltage monitoring device and a microwave radar at each live interval area;

[0100] A calibration unit is configured to calibrate the voltage monitoring device to form a first voltage and a second voltage corresponding to the voltage monitoring device; the first voltage is the voltage of the voltage monitoring device when the live compartment area where the voltage monitoring device is located is de-energized and other live compartment areas are energized; the second voltage is the voltage of the voltage monitoring device when all live compartment areas are energized;

[0101] A monitoring unit configured to monitor the voltage of the corresponding energized interval area in real time as a real-time voltage through the voltage monitoring device;

[0102] The judgment unit is configured as follows:

[0103] When the real-time voltage is less than or equal to the first voltage, determining that the energized interval area corresponding to the voltage monitoring device is a power-off area;

[0104] When the real-time voltage is greater than the first voltage and less than or equal to the second voltage, determining that the charged interval area corresponding to the voltage monitoring device is a charged area;

[0105] When the real-time voltage is greater than the second voltage, the charged interval area corresponding to the voltage monitoring device is corrected by the ratio of the real-time voltage and the difference voltage, and the corrected charged interval area is used as the charged area; the difference voltage is the difference between the second voltage and the first voltage;

[0106] The alarm unit is configured to monitor the position of the moving target through the microwave radar and send out an alarm signal when the distance between the moving target and the charged area is less than a preset value.

[0107] In a possible implementation manner, the dividing unit is further configured to:

[0108] Divide the corresponding equipment live interval area according to the equipment location and corresponding voltage;

[0109] The corresponding line live interval area is divided according to the line position and the corresponding voltage, and each line is divided into a separate line live interval area;

[0110] All the equipment live interval areas and the line live interval areas are regarded as the live interval areas.

[0111] In a possible implementation, the voltage monitoring device includes a signal acquisition board 2; and the arrangement unit is further configured as follows:

[0112] The signal acquisition board 2 is arranged at intervals on the device or line 5 under test.

[0113] In a possible implementation, the charged interval area is a rectangular area; and the judging unit is further configured to:

[0114] Obtaining the center point of the charged interval area;

[0115] Calculating the product of the width of the charged interval area and the ratio as a corrected width, and calculating the product of the length of the charged interval area and the ratio as a corrected length;

[0116] A new rectangle is constructed with the center point as the center point of the rectangle, the modified length as the length of the rectangle, and the modified width as the width of the rectangle as the modified charged interval area.

[0117] In a possible implementation, the alarm unit is further configured to:

[0118] Monitoring the distance and azimuth between the moving target and the microwave radar by the microwave radar;

[0119] The position of the moving target is calculated according to the position of the microwave radar, the distance and the azimuth.

[0120] Those of ordinary skill in the art will appreciate that the units and algorithm steps of each example described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, computer software, or a combination of the two. In order to clearly illustrate the interchangeability of hardware and software, the composition and steps of each example have been generally described in terms of function in the above description. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Professional and technical personnel can use different methods to implement the described functions for each specific application, but such implementation should not be considered to be beyond the scope of the present invention.

[0121] In the several embodiments provided in the present application, it should be understood that the disclosed devices and methods can be implemented in other ways. For example, the device embodiments described above are only schematic. For example, the division of the units is only a logical function division. There may be other division methods in actual implementation, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. In addition, the mutual coupling or direct coupling or communication connection shown or discussed can be an indirect coupling or communication connection through some interfaces, devices or units, or it can be an electrical, mechanical or other form of connection.

[0122] The units described as separate components may or may not be physically separated. As units, it is obvious that a person of ordinary skill in the art can realize that the units and algorithm steps of each example described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, computer software, or a combination of the two. In order to clearly illustrate the interchangeability of hardware and software, the composition and steps of each example have been generally described in terms of function in the above description. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Professional and technical personnel can use different methods to implement the described functions for each specific application, but such implementation should not be considered to be beyond the scope of the present invention.

[0123] In addition, each functional unit in each embodiment of the present invention may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit. The above-mentioned integrated unit may be implemented in the form of hardware or in the form of software functional units.

[0124] If the integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present invention is essentially or the part that contributes to the prior art, or all or part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a storage medium, including a number of instructions for a computer device (which can be a personal computer, a server, or a grid device, etc.) to perform all or part of the steps of the method described in each embodiment of the present invention. The aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), disk or optical disk and other media that can store program codes.

[0125] The specific implementation methods described above further illustrate the objectives, technical solutions and beneficial effects of the present invention in detail. It should be understood that the above description is only a specific implementation method of the present invention and is not intended to limit the scope of protection of the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A method for preventing accidental entry into live intervals outdoors based on non-contact voltage monitoring, characterized in that: include: Obtain the equipment location and line location of the live outdoor area of ​​the target substation; Dividing the live outdoor area into a plurality of live interval areas according to the equipment location, the line location and the corresponding voltage; Arrange voltage monitoring devices and microwave radars in each live compartment area; The voltage monitoring device is calibrated to form a first voltage and a second voltage corresponding to the voltage monitoring device; the first voltage is the voltage of the voltage monitoring device when the live compartment area where the voltage monitoring device is located is de-energized and other live compartment areas are energized; the second voltage is the voltage of the voltage monitoring device when all live compartment areas are energized; The voltage monitoring device monitors the voltage of the corresponding energized interval area in real time as the real-time voltage; When the real-time voltage is less than or equal to the first voltage, determining that the energized interval area corresponding to the voltage monitoring device is a power-off area; When the real-time voltage is greater than the first voltage and less than or equal to the second voltage, determining that the charged interval area corresponding to the voltage monitoring device is a charged area; When the real-time voltage is greater than the second voltage, the charged interval area corresponding to the voltage monitoring device is corrected by the ratio of the real-time voltage and the difference voltage, and the corrected charged interval area is used as the charged area; the difference voltage is the difference between the second voltage and the first voltage; The position of the moving target is monitored by the microwave radar, and an alarm signal is issued when the distance between the moving target and the charged area is less than a preset value.

2. The outdoor method for preventing accidental entry into live intervals based on non-contact voltage monitoring according to claim 1 is characterized in that: Dividing the live outdoor area into a plurality of live interval areas according to the equipment location, the line location and the corresponding voltage includes: Divide the corresponding equipment live interval area according to the equipment location and corresponding voltage; The corresponding line live interval area is divided according to the line position and the corresponding voltage, and each line is divided into a separate line live interval area; All the equipment live interval areas and the line live interval areas are regarded as the live interval areas.

3. The outdoor method for preventing accidental entry into live intervals based on non-contact voltage monitoring according to claim 1 is characterized in that: The voltage monitoring device comprises a signal acquisition board (2); the voltage monitoring device arranged in each live interval area comprises: The signal collection board (2) is arranged at intervals on the device or line (5) under test.

4. The outdoor method for preventing accidental entry into live intervals based on non-contact voltage monitoring according to claim 1 is characterized in that: The live interval area is a rectangular area; the live interval area corresponding to the voltage monitoring device is corrected by the ratio of the real-time voltage and the difference voltage, including: Obtaining the center point of the charged interval area; Calculating the product of the width of the charged interval area and the ratio as a corrected width, and calculating the product of the length of the charged interval area and the ratio as a corrected length; A new rectangle is constructed with the center point as the center point of the rectangle, the modified length as the length of the rectangle, and the modified width as the width of the rectangle as the modified charged interval area.

5. The outdoor method for preventing accidental entry into live intervals based on non-contact voltage monitoring according to claim 1 is characterized in that: Monitoring the position of a moving target by the microwave radar includes: Monitoring the distance and azimuth between the moving target and the microwave radar by the microwave radar; The position of the moving target is calculated according to the position of the microwave radar, the distance and the azimuth.

6. Outdoor anti-inadvertent entry into live compartment system based on non-contact voltage monitoring, characterized in that: include: An acquisition unit configured to acquire a device location and a line location in a live outdoor area of ​​a target substation; A division unit, configured to divide the live outdoor area into a plurality of live interval areas according to the equipment location, the line location and the corresponding voltage; a deployment unit configured to deploy a voltage monitoring device and a microwave radar at each live interval area; A calibration unit is configured to calibrate the voltage monitoring device to form a first voltage and a second voltage corresponding to the voltage monitoring device; the first voltage is the voltage of the voltage monitoring device when the live compartment area where the voltage monitoring device is located is de-energized and other live compartment areas are energized; the second voltage is the voltage of the voltage monitoring device when all live compartment areas are energized; A monitoring unit configured to monitor the voltage of the corresponding energized interval area in real time as a real-time voltage through the voltage monitoring device; The judgment unit is configured as follows: When the real-time voltage is less than or equal to the first voltage, determining that the energized interval area corresponding to the voltage monitoring device is a power-off area; When the real-time voltage is greater than the first voltage and less than or equal to the second voltage, determining that the charged interval area corresponding to the voltage monitoring device is a charged area; When the real-time voltage is greater than the second voltage, the charged interval area corresponding to the voltage monitoring device is corrected by the ratio of the real-time voltage and the difference voltage, and the corrected charged interval area is used as the charged area; the difference voltage is the difference between the second voltage and the first voltage; The alarm unit is configured to monitor the position of the moving target through the microwave radar and send out an alarm signal when the distance between the moving target and the charged area is less than a preset value.

7. The outdoor anti-inadvertent entry into live compartment system based on non-contact voltage monitoring according to claim 6 is characterized in that: The dividing unit is further configured to: Divide the corresponding equipment live interval area according to the equipment location and corresponding voltage; The corresponding line live interval area is divided according to the line position and the corresponding voltage, and each line is divided into a separate line live interval area; All the equipment live interval areas and the line live interval areas are regarded as the live interval areas.

8. The outdoor anti-inadvertent entry into live compartment system based on non-contact voltage monitoring according to claim 6 is characterized in that: The voltage monitoring device comprises a signal acquisition board (2); the arrangement unit is further configured to: The signal collection board (2) is arranged at intervals on the device or line (5) under test.

9. The outdoor anti-inadvertent entry into live compartment system based on non-contact voltage monitoring according to claim 6 is characterized in that: The charged interval area is a rectangular area; the judging unit is further configured to: Obtaining the center point of the charged interval area; Calculating the product of the width of the charged interval area and the ratio as a corrected width, and calculating the product of the length of the charged interval area and the ratio as a corrected length; A new rectangle is constructed with the center point as the center point of the rectangle, the modified length as the length of the rectangle, and the modified width as the width of the rectangle as the modified charged interval area.

10. The outdoor anti-inadvertent entry into live compartment system based on non-contact voltage monitoring according to claim 6, characterized in that: The alarm unit is further configured to: Monitoring the distance and azimuth between the moving target and the microwave radar by the microwave radar; The position of the moving target is calculated according to the position of the microwave radar, the distance and the azimuth.

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