Intelligent underground remote leakage test system

Abstract

The utility model discloses an intelligent underground remote leakage test system, and relates to the technical field of electric leakage test, and the system comprises a 5G / 6G remote leakage test module, a 5G / 6G remote leakage communication module, a grounding resistance detection module, and a remote leakage power supply which are connected with each other and are installed in a 5G / 6G remote leakage explosion-proof housing, and are transmitted to a ground communication system through an underground communication system. And the remote leakage test module is connected with the anti-violation cloud system and the mobile phone terminal APP, and is connected with the shunt switch A through a three-phase low-voltage line, or is connected with the high-voltage power supply equipment through an insulation monitoring line.

Description

Technical Field

[0001] This utility model relates to the field of leakage current testing technology, and in particular to an intelligent downhole remote leakage testing system. Background Technology

[0002] The "Necessity Analysis of Remote Manual Trip Testing Technology" in the book "Theory and Application of Anti-Violation Technology" points out that underground power supply systems must conduct remote leakage tripping tests. For this purpose, the invention patent "A Method and Equipment for Remote Leakage Testing in Coal Mines," which has obtained safety certification, uses a 485 communication port, which cannot meet the needs of current 4G / 5G / 6G, Wi-Fi, and fiber optic communication. Furthermore, this equipment can only conduct remote leakage tests at the end of 127V-1140V lines in three-phase low-voltage power supply systems, and cannot be used at the end of 10KV / 6KV / 3.3KV lines in three-phase high-voltage power supply systems. This is because the operating voltage levels are incompatible, and the risk of gas explosion during high-voltage leakage tests underground is extremely high.

[0003] Furthermore, regarding the remote leakage current testing method and its problems: Article 19 of the "Detailed Rules for Installation, Operation, Maintenance and Repair of Low-Voltage Leakage Detection and Protection Devices in Coal Mines" stipulates that a remote manual leakage current trip test should be performed on a leakage protection device in operation at least once a month. The method is as follows: one end of the test resistor in the electromagnetic starter is connected to the thread of the fuse tube, and the other end is connected to the outer casing. After closing the outer cover, power is supplied, and it is observed whether the feeder switch trips. If it trips, it indicates that the leakage protection device is operating reliably. After the test, the test resistor must be removed. When conducting the test according to this method, before the test, the power must be turned off, the explosion-proof switch cover must be opened, voltage must be tested and discharged, the test resistor must be connected, the cover must be closed, and power must be supplied. After the test, the explosion-proof switch cover must be opened again, voltage must be tested and discharged, the test resistor must be removed, the cover must be closed, and the feeder switch must be powered on. However, there are unsafe behaviors and significant drawbacks in the process of completing these operations. Utility Model Content

[0004] This invention provides an intelligent downhole remote leakage test system to solve the technical problem of how to conduct remote leakage tests on the ground using an anti-violation cloud system.

[0005] This utility model provides an intelligent downhole remote leakage testing system, characterized in that it includes:

[0006] The anti-violation cloud system 17 is used to send remote leakage test commands and receive remote leakage test results;

[0007] Ground communication system 15 is used to receive remote leakage test instructions from the anti-violation cloud system 17 and to send the remote leakage test results to the anti-violation cloud system 17;

[0008] The downhole communication system 13 is used to receive remote leakage test commands from the surface communication system 15 and to send the remote leakage test results to the surface communication system 15.

[0009] The remote leakage test device 12 is used to receive and perform leakage test according to the received remote leakage test command, and to feed back the remote leakage test results to the anti-violation cloud system 17 via the downhole communication system 13 and the surface communication system 15.

[0010] The remote leakage test device 12 includes: a remote leakage communication module 23, a remote leakage test module 31, and a grounding resistance detection module 25;

[0011] Among them, the remote leakage communication module 23 forwards the remote leakage test command sent by the downhole communication system 13 to the remote leakage test module 31;

[0012] According to the remote leakage test instruction, the remote leakage test module 31 connects the remote leakage test circuit including the branch switch 5 of the three-phase low-voltage line and sends the remote leakage test results including the leakage action time of the remote leakage test circuit to the remote leakage communication module 23; or according to the remote leakage test instruction, it performs a leakage test on the end of the three-phase high-voltage power line and sends the leakage test results of the end of the three-phase high-voltage line to the remote leakage communication module 23.

[0013] The grounding resistance detection module 25 detects the grounding resistance value according to the remote leakage test command, and sends the grounding resistance value result to the remote leakage communication module 23;

[0014] The remote leakage test command includes a three-phase low-voltage line remote leakage test command, a three-phase high-voltage power line remote leakage test command, or a grounding resistance detection command.

[0015] Preferably, according to the three-phase low-voltage line remote leakage test command, the remote leakage test module 31 drives the remote leakage test relay K1 39 connected to the remote leakage test module 31 to operate, and its normally open contact K11 41 closes, connecting the remote leakage test circuit of the three-phase low-voltage line including the shunt switch 5 and the leakage test resistor RS 43, so that the leakage test resistor RS 43 is connected to the ground and a leakage current is generated. At the same time, the timer set in the remote leakage test module 31 is started to start timing, and the signal converter 40 set on the three-phase low-voltage line detects its three-phase voltage signal. After the shunt switch 5 of the three-phase low-voltage line is opened, the signal converter 40 sends the detection result of no voltage to the remote leakage test module 31, so that the remote leakage test module 31 obtains the leakage action time of the remote leakage test circuit according to the detection result, and sends the remote leakage test result including the three-phase voltage signal and the leakage action time to the remote leakage communication module 23.

[0016] Preferably, the anti-violation cloud system 17 receives the remote leakage test results, including three-phase voltage signals and leakage action time, sent by the remote leakage test module 31 of the remote leakage test device 12 via the underground communication system 13, the ground communication system 15, and the remote leakage communication module 23. If the three-phase voltage signal changes from energized to de-energized, the three-phase low-voltage line remote leakage test is successful. At the same time, the leakage action time is compared with a pre-stored leakage action time threshold. If the leakage action time is greater than the leakage action time threshold, an alarm is triggered, and the action time value is displayed. If the leakage action time is not greater than the leakage action time threshold, no alarm is triggered, and the action time value is displayed. If the three-phase voltage signal does not change from energized to de-energized, the three-phase low-voltage line remote leakage test fails.

[0017] Preferably, the remote leakage test module 31 performs a leakage test on the end of the three-phase high-voltage power line according to the remote leakage test command, including:

[0018] According to the remote leakage test command of the three-phase high-voltage power line, the remote leakage test module 31 drives the high-voltage test relay K4 61 connected to the remote leakage test module 31 to operate. Its normally open contact K41 closes, connecting to the terminal element 62 and turning on the monitoring power supply 66 of the high-voltage insulation monitoring line 33. This drives the high-voltage equipment insulation monitoring relay K6 67 connected to the monitoring power supply 66 to operate. Its normally closed contact K61 opens, de-energizing the high-voltage circuit breaker C2 63 of the three-phase high-voltage switch 35 connected to the three-phase high-voltage power line 65, thereby disconnecting the three-phase high-voltage power line 65. Alternatively, the normally open contact K62 of the high-voltage equipment insulation monitoring relay K6 67 closes, driving the high-voltage insulation monitoring test report relay K7 64 to operate. The operation signal after its normally open contact closes is sent to the remote leakage test module 31 as the leakage test result containing the end of the three-phase high-voltage line.

[0019] Preferably, the grounding resistance detection module 25 detects the grounding resistance value according to the remote leakage test command, including:

[0020] The grounding resistance detection module 25 detects the small grounding resistance Rx 251 according to the grounding resistance detection command, and obtains the grounding resistance value data of the small grounding resistance Rx 251.

[0021] The grounding resistance detection module 25 has three measuring electrodes: N, P, and Q. The N electrode lead is connected to the test resistor R. S43 is connected between the small grounding resistor Rx 251 and the grounding grid via the small grounding resistor Rx 251. A measuring grounding electrode Pd 252 is driven in 5 meters away from the grounding grid. A measuring grounding electrode Qd 253 is driven in 5 meters away from the grounding electrode Pd 252. The P electrode lead is connected to the grounding electrode Pd 252 and the Q electrode lead is connected to the grounding electrode Qd 253.

[0022] Preferably, the grounding resistance detection module 25 further includes detecting the grounding resistance value according to the remote leakage test command:

[0023] The grounding resistance detection module 25 detects the large grounding resistance Rd 259 according to the grounding resistance detection command, and obtains the grounding resistance value data of the large grounding resistance Rd 259.

[0024] The grounding resistance detection module 25 has three measuring electrodes: N, P, and Q. The N electrode lead is connected to the test resistor R. S 43 is connected to the grounding grid 450 via the large grounding resistor Rd 259, and the P electrode and the Q electrode are connected together to the grounding electrode of the equipment housing.

[0025] Preferably, the anti-violation cloud system 17 receives the grounding resistance data of the small grounding resistance Rx 251 or the grounding resistance data of the large grounding resistance Rd 259 sent by the grounding resistance detection module 25 of the remote leakage test device 12 via the underground communication system 13, the surface communication system 15 and the remote leakage communication module 23. When the grounding resistance data of the small grounding resistance Rx 251 exceeds the specified small grounding resistance value or when the grounding resistance data of the large grounding resistance Rd 259 exceeds the specified large grounding resistance value, it sends a command to the remote leakage test device 12 to drive the grounding electrode suspension lockout relay K3 250 to operate, and its normally closed contact K31 42 opens, and the lockout test continues.

[0026] Preferably, the remote communication module 23 includes:

[0027] The signal conversion circuit module 191 has multiple interface circuits connected to its input terminal and a signal processing module 192 connected to its output terminal.

[0028] The remote controller 193, which is connected to the input terminal of the signal processing module 192, is used to send remote control signals to the signal processing module 192.

[0029] Multiple antennas connected to the output of the signal processing module 192 are used to transmit wireless signals to the downhole communication system 13.

[0030] The plurality of interface circuits include: anti-violation signal interface circuit 205, electrical / non-electrical signal interface circuit 203, grounding resistance test signal interface circuit 205, and remote leakage detection signal interface circuit 207.

[0031] The plurality of antennas include:

[0032] Anti-illegal antenna 195 installed outside the explosion-proof enclosure;

[0033] Antenna A 197, which is installed inside an explosion-proof enclosure and transmits wireless signals through the observation window of the explosion-proof enclosure;

[0034] Antenna B 199, which is installed inside an explosion-proof enclosure and transmits wireless signals through the gaps in the explosion-proof enclosure;

[0035] Preferably, the anti-violation antenna 195 is connected to the remote leakage communication module 23 disposed in the remote leakage explosion-proof enclosure 21 via a communication line sleeve 118 fixed on the explosion-proof enclosure partition 115 and a cable entry device 117 fixed on the remote leakage explosion-proof enclosure 21.

[0036] The anti-violation antenna 195 is installed inside the anti-violation cover sensor 107 or the protective cover 99 of the anti-violation technology product.

[0037] The communication line is an optical fiber or a coaxial cable.

[0038] The beneficial effects of this utility model are that it enables remote leakage current testing via 4G / 5G / 6G, Wi-Fi, and optical fiber communication; it can perform insulation monitoring tests on 10KV / 6KV / 3.3KV lines; and it can conduct remote leakage current testing on the ground via an anti-violation cloud system. Attached Figure Description

[0039] Figure 1 This is a schematic diagram of an intelligent downhole remote leakage test system provided by this utility model;

[0040] Figure 2 This is an equivalent schematic diagram of the remote leakage test module provided by this utility model;

[0041] Figure 3 This is a schematic diagram of the remote leakage communication module provided by this utility model;

[0042] Figure 4 This is a schematic diagram of the testing principle for measuring small grounding resistance provided by this utility model;

[0043] Figure 5 This is a schematic diagram of the large grounding resistance testing principle provided by this utility model;

[0044] Figure 6This is a schematic diagram of the 5G / 6G remote leakage explosion-proof shell provided by this utility model;

[0045] Figure 7 This is a schematic diagram of the high-voltage insulation monitoring test principle provided by this utility model.

[0046] In the diagram, 1-Single-line diagram of a three-phase low-voltage power supply line (127V-1140V); 3-Main feeder switch; 5-Branch switch A; 7-Branch switch B; 9-5G / 6G intelligent remote leakage current testing device A; 11-5G / 6G intelligent remote leakage current testing device B; 12-5G / 6G intelligent remote leakage current testing device C; 13-Underground communication system, including 5G / 6G base stations, switches, ring networks, etc.; 15-Ground communication processing center; 17-Anti-violation cloud system, including ground anti-violation information processing platform, anti-violation cloud space, etc.; 19-Mobile anti-violation terminal APP; 21-5G / 6G remote leakage explosion-proof Casing; 23-5G / 6G remote leakage communication module, including 5G / 6G mobile phone; 25-General grounding resistance detection module; 27-First auxiliary grounding electrode; 29-First main grounding electrode; 30-Remote leakage power supply; 31-5G / 6G remote leakage test module; 33-3.3~10KV three-phase high voltage power supply line insulation monitoring line; 34-Mobile substation; 35-3.3~10KV three-phase high voltage switch; 36(65)-3.3~10KV three-phase high voltage power supply line; 39-Remote leakage test relay; 40-Signal converter; 42-Normally closed contact of grounding electrode suspension lockout relay; 43-Test resistor R S; 45-Second auxiliary grounding electrode; 46-Feeder switch contactor C, its contact C157; 47-Second main grounding electrode zd; 49-Leakage protection power supply; 51-Leakage protection relay K2, its normally closed contact K21; 53-Leakage protection interface circuit; 55-127V~1140V three-phase line; 191-Signal conversion circuit template; 192-5G / 6G signal processing module; 193-5G / 6G module remote control; 195-Anti-violation antenna; 197-Antenna A; 199-Antenna B; 201-Anti-violation signal interface circuit; 203-Electrical / non-electrical signal interface circuit; 205-Grounding resistance test signal interface circuit 207 - Remote leakage detection signal interface circuit; Grounding electrode floating interlocking relay K3; 257 - Grounding resistance digital measurement module; 252 - Grounding electrode Pd; 253 - Grounding electrode Qd; 251 - Small grounding resistance; 259 - Large grounding resistance; 450 - Earth; 85 - Anti-violation technology product dual-proof lock installed on the disconnecting switch; 89 - Anti-violation door opening sensor; 91 - Door cover; 93 - Battery casing and battery; 95 - Door cover fastening bolts; 96 - Casing observation window; 97 - Spiral horn mouth; 99 - Anti-violation technology product protective cover; 101 - Wiring cavity cover plate; 103 - Wiring cavity cover plate fastening bolts; 105 - Emergency rescue supplies. 107-Anti-illegal opening sensor; 109-Emergency rescue equipment lighting indicator; 111-Protective cover fastening bolt; 115-Long-range explosion-proof enclosure partition; 117-Cable entry device; 118-Communication line sleeve; 61-High voltage test relay K4; 62-Terminal element; 63-High voltage circuit breaker C2; 66-Power supply applied to the monitoring line by high voltage equipment; 67-High voltage equipment insulation monitoring relay; 64-Insulation monitoring test report relay K7. Detailed Implementation

[0047] It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this application. In the following description, suffixes such as "module," "part," or "unit" used to denote elements are used solely for illustrative purposes and have no inherent meaning. Therefore, "module," "part," or "unit" may be used interchangeably.

[0048] Example 1:

[0049] Figure 1 This is a schematic diagram of an intelligent downhole remote leakage testing system provided by this utility model, as shown below. Figure 1As shown, it includes: an anti-violation cloud system 17, used to send remote leakage test commands and receive remote leakage test results; a ground communication system 15, used to receive remote leakage test commands from the anti-violation cloud system 17 and send remote leakage test results to the anti-violation cloud system 17; an underground communication system 13, used to receive remote leakage test commands from the ground communication system 15 and send remote leakage test results to the ground communication system 15; and a remote leakage test device 12, used to receive and perform leakage testing according to the received remote leakage test commands, and feed back the remote leakage test results to the anti-violation cloud system 17 via the underground communication system 13 and the ground communication system 15; the remote leakage test device 12 includes: a remote leakage communication module 23, a remote leakage test module 31, and a grounding resistance detection module 25; wherein, the remote leakage communication module 23 transmits the remote leakage test commands to the ground communication system 17, and sends the remote leakage test results to the ground communication system 15, and sends the remote leakage test results to the ground communication system 15, and sends the remote leakage test results to the ground communication system 15, and sends the remote leakage test results to the ground communication system 15, and sends the remote leakage test results to the ground communication system 15, and sends the remote leakage test results to the ground communication system 17 ... The downhole communication system 13 forwards the remote leakage test command to the remote leakage test module 31; the remote leakage test module 31, according to the remote leakage test command, connects the remote leakage test circuit including the branch switch 5 connected to the three-phase low-voltage line, and sends the remote leakage test result including the leakage current action time of the remote leakage test circuit to the remote leakage communication module 23; or according to the remote leakage test command, it performs a leakage current test on the end of the three-phase high-voltage power line, and sends the leakage current test result of the end of the three-phase high-voltage line to the remote leakage communication module 23; the grounding resistance detection module 25 detects the grounding resistance value according to the remote leakage test command, and sends the grounding resistance value result to the remote leakage communication module 23; wherein, the remote leakage test command includes a three-phase low-voltage line remote leakage test command, a three-phase high-voltage power line remote leakage test command, or a grounding resistance detection command.

[0050] In this embodiment of the utility model, the remote leakage test module 31, according to the remote leakage test command of the three-phase low-voltage line, drives the remote leakage test relay K1 39 connected to the remote leakage test module 31 to operate, and its normally open contact K11 41 closes, connecting the remote leakage test circuit of the three-phase low-voltage line, including the shunt switch 5 and the leakage test resistor RS 43, so that the leakage test resistor RS 43 is connected to the ground, generating leakage current. At the same time, the timer set in the remote leakage test module 31 is started to start timing, and the signal converter 40 set on the three-phase low-voltage line detects its three-phase voltage signal. After the shunt switch 5 of the three-phase low-voltage line is opened, the signal converter 40 sends the detection result of no voltage to the remote leakage test module 31, so that the remote leakage test module 31 obtains the leakage action time of the remote leakage test circuit according to the detection result, and sends the remote leakage test result including the three-phase voltage signal and the leakage action time to the remote leakage communication module 23.

[0051] In this embodiment of the invention, the anti-violation cloud system 17 receives the remote leakage test results, including three-phase voltage signals and leakage action time, sent by the remote leakage test module 31 of the remote leakage test device 12 via the underground communication system 13, the surface communication system 15, and the remote leakage communication module 23. If the three-phase voltage signal changes from energized to de-energized, the three-phase low-voltage line remote leakage test is successful. Simultaneously, the leakage action time is compared with a pre-stored leakage action time threshold. If the leakage action time is greater than the threshold, an alarm is triggered, and the action time value is displayed. If the leakage action time is not greater than the threshold, no alarm is triggered, and the action time value is displayed. If the three-phase voltage signal does not change from energized to de-energized, the three-phase low-voltage line remote leakage test fails.

[0052] like Figure 1 and Figure 2 As shown, a 5G remote leakage explosion-proof enclosure 21 is designed and manufactured according to the GB3836 series standard. Inside, a 5G remote leakage test module 31, a 5G remote leakage communication module 23, a grounding resistance detection module 25, and a remote leakage power supply 30 are installed and connected together according to the design drawing to form a 5G intelligent remote leakage test device C12. A 660V three-phase low-voltage power supply line 1 is introduced into the 5G remote leakage explosion-proof enclosure 21 through the main power supply switch 3 and branch switch A5, and connected to the 5G remote leakage test module 31. The underground communication system 13 is connected to the 5G remote leakage explosion-proof enclosure 21 and connected to the 5G remote leakage communication module 23. An auxiliary grounding electrode 27 is introduced into the 5G remote leakage explosion-proof enclosure 21 through a grounding wire and connected to the grounding resistance detection module 25. The main grounding electrode is connected to the grounding electrode of the 5G remote leakage explosion-proof enclosure 21. The ground anti-violation cloud system 17 is connected to the ground information processing center 15 and communicates with the 5G remote leakage communication system 23 through the underground communication system 13. The mobile terminal APP 19 is connected to the anti-violation cloud system 17.

[0053] The simplified workflow of this utility model is as follows: The ground-based anti-violation cloud system 17 issues a test command, which is sequentially transmitted to the ground information processing center 15, the underground communication system 13, the 5G remote leakage communication module 23, and the 5G remote leakage test module 31 to conduct a remote leakage test. The specific method is as follows: Figure 2 As shown, the leakage test resistor RS43 is connected to the ground to generate a leakage current. The leakage protection of the branch switch 5 detects the leakage current and trips, and transmits the trip signal sequentially to the underground communication system 13, the ground information processing center 15, and the anti-violation cloud system 17. The remote leakage test signal, leakage action time, power supply voltage, and other parameters are sent to the anti-violation cloud system 17 through the above transmission lines, and are also transmitted to the mobile anti-violation terminal APP 19.

[0054] Similarly, the 5G intelligent remote leakage test device B11 performs a remote leakage test on the branch switch B7, and the 5G intelligent remote leakage test device A9 performs a remote leakage test on the main power supply switch 3. The simplified operation procedure is the same as above.

[0055] It should be noted that before conducting the remote leakage test, if the auxiliary grounding electrode Fd 45 is poorly grounded, the grounding resistance detection module sends a signal to the anti-violation cloud center 17, which, after processing, issues a prohibition command to the 5G remote leakage test module 31, thereby blocking the test from continuing.

[0056] In this embodiment of the invention, the 5G / 6G remote leakage test module, the 5G / 6G remote leakage communication module, the grounding resistance detection module, and the remote leakage power supply are interconnected and installed in the 5G / 6G remote leakage explosion-proof housing. The data is transmitted to the ground communication system through the underground communication system and connected to the anti-violation cloud system and the mobile terminal APP. The remote leakage test module is connected to the branch switch A through a three-phase low-voltage line or to the high-voltage power supply equipment through an insulation monitoring line.

[0057] In this embodiment of the invention, the anti-violation cloud system issues a command, which is transmitted from the ground to the underground 5G / 6G remote leakage communication module, and then to the 5G / 6G remote leakage test module. After processing, the remote leakage test relay is activated, and its normally open contact K11 is closed. It is also closed when the normally closed contact K31 of the suspended locking relay is not open. The test resistor R... S For a three-phase low-voltage power supply system with 660V / 1140V / 127V lines, a remote leakage current test is performed. If the leakage current protection relay K2 activates, the normally closed contact of K21 opens, the feeder switch contactor C trips due to power failure, and its contact C1 opens, then the test is successful; otherwise, the test is unsuccessful.

[0058] In this embodiment of the invention, a 5G mobile phone can be purchased on the market, or a 6G mobile phone can be purchased after 6G technology becomes widespread, or a 5G development board or DTU can be purchased, or a 6G development board or DTU that will be available on the market later can be purchased. An interface circuit board that can receive signals such as Wi-Fi, Bluetooth, or USB is purchased and connected to a microcontroller and a 5G remote leakage test relay 39 to assemble a 5G remote leakage test module 31, which is then debugged to have 5G, Wi-Fi, Bluetooth, or USB signal driving functions. During the remote leakage test, a command is issued from the anti-violation system 17, transmitted from the ground to the underground 5G remote leakage communication module 23, and then to the 5G remote leakage test module 31. After processing, the remote leakage test relay 39 is activated, and its normally open contact K11 41 closes. The test resistor Rs 43 is connected to the three-phase line 55. If the normally closed contact K31 42 of the suspended interlocking relay does not open at this time, the leakage protection relay of the branch switch 5 of the three-phase line 55 detects the signal, and the current flowing out of the leakage protection power supply 49 increases. The current flows through the leakage protection relay K251, the leakage protection interface circuit 53, the three-phase line 55, and the closed contact C1 57, to K11 41, K31 42, the test resistor Rs 43, the auxiliary grounding electrode Fd 45, and then enters the main grounding Zd 47 through the earth, returning to the negative terminal of the leakage protection power supply 49. When the leakage protection relay K251 trips, its normally closed contact K21 opens, the branch switch trips, and its normally open contact C157 opens, indicating that the remote leakage test is successful; otherwise, the test is unsuccessful.

[0059] Example 2:

[0060] Figure 6 This is a schematic diagram of the 5G / 6G remote leakage explosion-proof enclosure provided by this utility model. The 5G / 6G remote leakage explosion-proof enclosure includes: an internally installed 5G / 6G remote leakage test module, a grounding resistance detection module, a 5G / 6G remote leakage communication module, a remote leakage power supply, and anti-violation technology products installed on the isolating switch, the door cover, the spiral horn nozzle, and the wiring cavity cover; an anti-violation cover-opening sensor installed on the protective cover; and emergency rescue supplies installed inside the protective cover. The anti-violation antenna of the 5G / 6G remote leakage communication module passes through the remote leakage explosion-proof enclosure partition via a communication cable sleeve and is installed on the anti-violation cover-opening sensor through a cable introduction device to wirelessly communicate with the downhole communication system; or antennas A and B are installed inside the remote leakage enclosure, and the wireless signal is transmitted to the outside of the 5G / 6G remote leakage explosion-proof enclosure through the explosion-proof gap, the insulation sheath of the terminal, the cable sheath, and the observation window of the enclosure to wirelessly communicate with the downhole communication system.

[0061] 5G / 6G remote leakage explosion-proof enclosure 21, such as Figure 5As shown, an anti-illegal opening sensor 89 is installed on the door cover. The principle and installation method are described in patent 201820793136.6, "Anti-illegal opening protection device for explosion-proof outer shell door cover". Two anti-locks 85 are installed on the isolating switch. The installation method is described in the enterprise standard and industry standard "Two-proof locks for mining switches". An anti-loosening lock 97 is installed on the spiral horn mouth of the incoming and outgoing cables. The principle and installation method are described in patent 201310057843.0, "An anti-loosening device and anti-loosening method for a horn mouth". A protective cover 99 is installed on the wiring cavity cover plate 101. The principle and installation method are described in patent 201210147572.3, "A cover plate protection device and a method and device for locking multiple bolts" 200910075088.2. An anti-illegal opening sensor 107 is installed on the protective cover. The specific method is described in patent 200910075088.2, "Method and device for locking multiple bolts". Emergency rescue equipment 105 is installed inside the protective cover. The door cover 91 has an outer viewing window 96, and a cable entry device 117 is installed on the outer cover.

[0062] The wiring cavity cover is secured with bolt 103 to fasten cover 101, and the door cover 91 is secured with bolt 95. The battery in the 5G remote leakage explosion-proof shell 21 is placed in battery box 93. All components are installed and connected according to the standard.

[0063] Example 3:

[0064] Figure 3 This is a schematic diagram of the 5G / 6G long-leakage communication module provided by this utility model, as shown below. Figure 3 As shown, it includes: a signal conversion circuit module 191, such as a 485, switch signal, or optical signal conversion module that converts signals to 5G / 6G signals; a 5G / 6G signal processing module 192, such as a 5G DTU; a 5G / 6G module remote control 193, which can be used as a remote control for an explosion-proof mobile phone; an anti-violation antenna 195, installed outside the explosion-proof enclosure; antenna A 197, installed inside the explosion-proof enclosure, transmitting 5G / 6G wireless signals through the observation window of the explosion-proof enclosure; and antenna B. 199, installed inside the explosion-proof enclosure, transmits 5G / 6G and other wireless signals through the explosion-proof gap; the output signals of the anti-violation signal interface circuit 201, electrical / non-electrical signal interface circuit 203, grounding resistance test signal interface circuit 205, and remote leakage detection signal interface circuit 207 are transmitted to the signal conversion circuit module 191, and after conversion, are transmitted to the 5G / 6G signal processing module 192. After processing, the signals are transmitted to the underground communication system through the anti-violation antenna 195, or the built-in antenna A or antenna B through the observation window and the gap of the explosion-proof enclosure. The 5G / 6G signal processing module is also connected to the remote controller to receive remote control signals; among them, the remote leakage 5G / 6G communication module is a 5G / 6G mobile phone.

[0065] In this embodiment of the present invention, the remote leakage communication module 23 includes: a signal conversion circuit module 191, whose input end is connected to multiple interface circuits and whose output end is connected to a signal processing module 192; a remote controller 193 connected to the input end of the signal processing module 192 for sending remote control signals to the signal processing module 192; and multiple antennas connected to the output end of the signal processing module 192 for sending wireless signals to the downhole communication system 13; wherein the multiple interface circuits include: an anti-violation signal interface circuit 205, an electrical / non-electrical signal interface circuit 203, a grounding resistance test signal interface circuit 205, and a remote leakage detection signal interface circuit 207; wherein the multiple antennas include: an anti-violation antenna 195 installed outside the explosion-proof enclosure; an antenna A 197 installed inside the explosion-proof enclosure and transmitting wireless signals through the observation window of the explosion-proof enclosure; and an antenna B 199 installed inside the explosion-proof enclosure and transmitting wireless signals through the gap of the explosion-proof enclosure.

[0066] In this embodiment of the utility model, a 5G mobile phone motherboard, or a 5G DTV, or an old 5G mobile phone, or a future 6G mobile phone motherboard or 6G DTV can be purchased to make a 5G / 6G signal processing module 192; a circuit board that can convert signals such as 485, switch signals, and optical signals into USB, Wi-Fi, Bluetooth, and other signals that can be received by the 5G / 6G signal processing module 192 can be purchased and connected together as required to make a signal conversion circuit module 191. The switch input anti-violation signal interface circuit 201, which outputs from components such as the cover opening sensor and the electrically locked gate, receives non-electrical signals such as temperature and sound via 485 voltage and analog signals. These signals are then connected to the signal conversion circuit module 191 via the electrical / non-electrical signal interface circuit 203, the grounding resistance detection signal via interface circuit 205, and the remote leakage test signal via interface circuit 207. The signal conversion circuit module 191 is connected to the 5G / 6G signal processing module 192, which can work with the 5G / 6G module remote controller 193. In the mine, the controller 193 can be replaced by an explosion-proof mobile phone. The 5G / 6G signal processing module outputs multiple antennas, such as... Figure 6 As shown, a 5G / 6G antenna A197 is installed inside the 5G remote leakage explosion-proof enclosure 21 to transmit signals to the observation window 96; and an antenna B199 transmits signals to the explosion-proof gap.

[0067] The main working process is illustrated below: Figure 6 When the anti-violation cover opening sensor 107 is opened, its action signal is transmitted to... Figure 3 The anti-violation signal interface circuit 201, via signal conversion circuit module 191, converts the switch signal into a USB signal, which is then transmitted to signal processing module 192. This signal is then sent to underground communication system 13 via far-leaking antenna 195, antenna A 197, or antenna B 199, and further transmitted to... Figure 1The anti-violation cloud system 17 shown on the ground processes the data to generate a power-off command, which is then transmitted from the ground information processing center 15 to the underground communication center 13 and then to the branch switch 5, which commands the branch switch to cut off the power, thus achieving power-off before opening the cover and locking after opening the cover.

[0068] Example 4:

[0069] like Figure 4 As shown, the grounding resistance detection module 25 detects the small grounding resistance Rx251 according to the grounding resistance detection command, and obtains the grounding resistance value data of the small grounding resistance Rx251; the grounding resistance detection module 25 has three measuring electrodes: N, P, and Q, wherein the N electrode lead is connected to the test resistor R S 43 is connected between the small grounding resistor Rx 251 and the grounding grid via the small grounding resistor Rx 251. A measuring grounding electrode Pd 252 is driven in 5 meters away from the grounding grid. A measuring grounding electrode Qd 253 is driven in 5 meters away from the grounding electrode Pd 252. The P electrode lead is connected to the grounding electrode Pd 252 and the Q electrode lead is connected to the grounding electrode Qd 253.

[0070] like Figure 5 As shown, the grounding resistance detection module 25 detects the large grounding resistance Rd259 according to the grounding resistance detection command, and obtains the grounding resistance value data of the large grounding resistance Rd259; the grounding resistance detection module 25 has three measuring electrodes: N, P, and Q, wherein the N electrode lead is connected to the test resistor R S 43 is connected to the grounding grid 450 via the large grounding resistor Rd 259, and the P electrode and the Q electrode are connected together to the grounding electrode of the equipment housing.

[0071] like Figure 4 and Figure 5 As shown, the anti-violation cloud system 17 receives the grounding resistance data of the small grounding resistance Rx 251 or the grounding resistance data of the large grounding resistance Rd 259 sent by the grounding resistance detection module 25 of the remote leakage test device 12 via the underground communication system 13, the surface communication system 15 and the remote leakage communication module 23. When the grounding resistance data of the small grounding resistance Rx 251 exceeds the specified small grounding resistance value or when the grounding resistance data of the large grounding resistance Rd 259 exceeds the specified large grounding resistance value, it sends a command to the remote leakage test device 12 to drive the grounding electrode suspension lockout relay K3 250 to operate, and its normally closed contact K31 42 opens, and the lockout test continues.

[0072] The grounding resistance detection module includes a communication module for a digital grounding resistance meter and three measuring electrodes N, P, and Q. In this embodiment, the grounding resistance detection module 25 can be manufactured using various methods. This application uses a purchased digital grounding resistance test module 257. The digital grounding resistance measurement module includes measuring electrodes N, P, and Q. When measuring small resistances, such as below 1000 ohms, it is connected to the remote communication module 23, whose three measuring electrodes are N, P, and Q. The small grounding resistance 251 refers to grounding resistances less than or equal to 20 ohms, such as the grounding grid composed of the grounding plate and grounding wire buried in the water tank of an underground substation. The "Coal Mine Safety Regulations" require that the total grounding resistance not exceed 2 ohms. Therefore, for accurate measurement, the N electrode lead is connected to the test resistor R. S 43 is connected to the grounding grid between the small grounding resistor 251 and the grounding grid. A measuring grounding electrode Pd is driven into the ground 5 meters away from the connection point, and a measuring grounding electrode Qd is driven into the ground 5 meters away from Pd.

[0073] For measuring large grounding resistances of 259 ohms, such as single local grounding electrodes and unconnected grounding plates, the "Coal Mine Safety Regulations" specify their exact values. Therefore, inaccurate measurements can still meet the work requirements. For example, when the resistance is above 1000 ohms, the N electrode lead is connected to the test resistor R. S 43 is connected to the ground 450 between the large grounding resistance 259 and the P and Q electrodes are connected together and connected to the grounding electrode of the equipment casing, i.e., the main grounding electrode Fd.

[0074] Whether measuring small or large resistance, the measured grounding resistance value is transmitted to the communication module 23, and then to the ground anti-violation cloud system 17. When the grounding resistance value exceeds the specified value, the anti-violation cloud system 17 issues a command to activate the K3 relay, causing its normally closed contact K31(42) to open and blocking the continuous test. At the same time, its normally open contact K32 closes, connecting the measurement circuit, and the grounding resistance value can be measured. When the measured grounding resistance exceeds the specified value, an alarm is triggered or the remote leakage test is blocked.

[0075] Example 5:

[0076] Figure 7 This is a schematic diagram of the high-voltage insulation monitoring test principle provided by this utility model, as shown below. Figure 7 As shown, during the high-voltage insulation monitoring test, the remote leakage test module is connected to the high-voltage power supply equipment via the insulation monitoring line. The anti-violation cloud sends a command, which, through the remote leakage communication module and the remote leakage test module, drives the high-voltage test relay K4 to operate. Its normally open contact K41 closes, connecting to the terminal element. The high-voltage equipment insulation monitoring relay K6 operates, and its normally closed contact K61 opens. The 3.3–10kV high-voltage circuit breaker C2 trips, de-energizing. Simultaneously, its normally open contact K62 operates, and the insulation monitoring test report relay K7 operates, reporting to the anti-violation cloud via the remote leakage test module. Specifically… Figure 1 In the 5G / 6G remote leakage explosion-proof enclosure 21, a high-voltage test relay K4 61, a terminal element 62, and a reporting relay K7 64 are installed. A 3.3–10KV insulation monitoring line 33 is introduced into the explosion-proof enclosure 21, and the components are arranged according to the attached... Figure 7 The schematic diagrams are connected together.

[0077] The working process is as follows: The anti-violation cloud 17 issues a high-voltage insulation test command, which is then transmitted via the remote leakage communication module 23 (which can be replaced by a 5G / 6G mobile phone) and the remote leakage test module 31 to drive the high-voltage test relay K4 61 to operate. Its normally open contact K41 closes, connecting to the terminal element 62. The monitoring power supply 66 of the high-voltage insulation monitoring line 33, i.e., the power supply applied to the monitoring line by the high-voltage equipment, is connected. The high-voltage equipment insulation monitoring relay K6 67 operates, and its normally closed contact K61 opens. The high-voltage circuit breaker C2 63 is de-energized, and its contact C21 cuts off the 3.3~10KV power line 65. Alternatively, the normally open contact K62 operates, and the high-voltage insulation monitoring test report relay K7 64 operates, closing its contact to send a signal, which is then reported to the anti-violation cloud 17 via the remote leakage test module 31.

[0078] In this embodiment of the present invention, the remote leakage test module 31 performs a leakage test on the end of the three-phase high-voltage power line according to the remote leakage test command, including: the remote leakage test module 31 drives the high-voltage test relay K4 61 connected to the remote leakage test module 31 to operate, its normally open contact K41 closes, connects to the terminal element 62, and connects the monitoring power supply 66 of the high-voltage insulation monitoring line 33, thereby driving the high-voltage equipment insulation monitoring relay K6 67 connected to the monitoring power supply 66 to operate, its normally closed contact K61 opens, and the high-voltage circuit breaker C2 63 of the three-phase high-voltage switch 35 connected to the three-phase high-voltage power line 65 is de-energized, thereby disconnecting the three-phase high-voltage power line 65; or the normally open contact K62 of the high-voltage equipment insulation monitoring relay K6 67 closes, driving the high-voltage insulation monitoring test report relay K7 64 to operate, and the operation signal after its normally open contact closes is sent to the remote leakage test module 31 as the leakage test result of the end of the three-phase high-voltage line.

[0079] Example 6:

[0080] In this embodiment of the present invention, the anti-violation antenna 195 is connected to the remote leakage communication module 23 disposed inside the remote leakage explosion-proof housing 21 via a communication line sleeve 118 fixed on the explosion-proof housing partition 115 and a cable introduction device 117 fixed on the remote leakage explosion-proof housing 21; wherein, the anti-violation antenna 195 is disposed inside the anti-violation opening sensor 107 or the anti-violation technology product protective cover 99; the communication line is an optical cable or a coaxial cable.

[0081] Manufacturing process of anti-violation antenna 195: Purchase a 5G communication patch antenna with an input impedance of 50 ohms as the anti-violation antenna. A communication line matching the output impedance of the 5G / 6G communication module is passed through the communication line sleeve and attached inside the anti-violation cover sensor 107, or the antenna is installed inside the anti-violation technology product protective cover 99. The anti-violation antenna 195 is connected to the 50-ohm communication line, and then passed through the communication line sleeve 118 through the cable introduction device 117, and then connected to the 5G remote leakage communication module 23. The 5G remote leakage communication module 23 is debugged to achieve impedance matching. The communication line can be an optical cable or a coaxial cable. The communication line sleeve 118 is made by encapsulation, with one or more communication lines passing through it. The communication line sleeve 118 is fixed on the explosion-proof enclosure partition 115 according to the explosion-proof requirements.

[0082] The preferred embodiments of this application have been described above with reference to the accompanying drawings, but this does not limit the scope of the claims. Any modifications, equivalent substitutions, and improvements made by those skilled in the art without departing from the scope and spirit of this application shall be within the scope of the claims.

Claims

1. An intelligent downhole remote leakage testing system, characterized in that, include: The anti-violation cloud system (17) is used to send remote leakage test instructions and receive remote leakage test results; Ground communication system (15) is used to receive remote leakage test instructions from the anti-violation cloud system (17) and send the remote leakage test results to the anti-violation cloud system (17); The downhole communication system (13) is used to receive remote leakage test instructions from the ground communication system (15) and to send the remote leakage test results to the ground communication system (15); The remote leakage test device (12) is used to receive and perform leakage test according to the received remote leakage test command, and to feed back the remote leakage test results to the anti-violation cloud system (17) via the downhole communication system (13) and the ground communication system (15). The remote leakage test device (12) includes: a remote leakage communication module (23), a remote leakage test module (31), and a grounding resistance detection module (25); Among them, the remote leakage communication module (23) forwards the remote leakage test command sent by the downhole communication system (13) to the remote leakage test module (31); According to the remote leakage test instruction, the remote leakage test module (31) connects the remote leakage test circuit including the branch switch (5) of the three-phase low-voltage line and sends the remote leakage test results including the leakage action time of the remote leakage test circuit to the remote leakage communication module (23); or according to the remote leakage test instruction, it performs a leakage test on the end of the three-phase high-voltage power line and sends the leakage test results of the end of the three-phase high-voltage line to the remote leakage communication module (23). The grounding resistance detection module (25) detects the grounding resistance value according to the remote leakage test command and sends the grounding resistance value result to the remote leakage communication module (23); The remote leakage test command includes a three-phase low-voltage line remote leakage test command, a three-phase high-voltage power line remote leakage test command, or a grounding resistance detection command.

2. The system according to claim 1, characterized in that, According to the remote leakage test command of the three-phase low-voltage line, the remote leakage test module (31) drives the remote leakage test relay K1 (39) connected to the remote leakage test module (31) to operate, and its normally open contact K11 (41) closes, connecting the remote leakage test circuit of the three-phase low-voltage line including the shunt switch (5) and the leakage test resistor RS (43), so that the leakage test resistor RS (43) is connected to the ground and a leakage current is generated. At the same time, the timer set in the remote leakage test module (31) is started to count, and the signal converter (40) set on the three-phase low-voltage line detects its three-phase voltage signal. After the shunt switch (5) of the three-phase low-voltage line is opened, the signal converter (40) sends the detection result of no voltage to the remote leakage test module (31), so that the remote leakage test module (31) obtains the leakage action time of the remote leakage test circuit according to the detection result, and sends the remote leakage test result including the three-phase voltage signal and the leakage action time to the remote leakage communication module (23).

3. The system according to claim 2, characterized in that, The anti-violation cloud system (17) receives the remote leakage test results, including three-phase voltage signals and leakage action time, sent by the remote leakage test module (31) of the remote leakage test device (12) via the downhole communication system (13), the ground communication system (15) and the remote leakage communication module (23). If the three-phase voltage signal changes from energized to de-energized, the three-phase low-voltage line remote leakage test is successful. At the same time, the leakage action time is compared with the pre-stored leakage action time threshold. If the leakage action time is greater than the leakage action time threshold, an alarm is triggered and the action time value is displayed. If the leakage action time is not greater than the leakage action time threshold, no alarm is triggered and the action time value is displayed. If the three-phase voltage signal does not change from energized to de-energized, the three-phase low-voltage line remote leakage test fails.

4. The system according to claim 1, characterized in that, The remote leakage test module (31) performs a leakage test on the end of the three-phase high-voltage power line according to the remote leakage test command, including: According to the remote leakage test command of the three-phase high-voltage power line, the remote leakage test module (31) drives the high-voltage test relay K4 (61) connected to the remote leakage test module (31) to operate, its normally open contact K41 closes, connects to the terminal element (62), connects the monitoring power supply (66) of the high-voltage insulation monitoring line (33), and then drives the high-voltage equipment insulation monitoring relay K6 (67) connected to the monitoring power supply (66) to operate, its normally closed contact K61 opens, so that the high-voltage circuit breaker C2 (63) of the three-phase high-voltage switch (35) connected to the three-phase high-voltage power line (65) is de-energized, thereby cutting off the three-phase high-voltage power line (65); or the normally open contact K62 of the high-voltage equipment insulation monitoring relay K6 (67) closes, drives the high-voltage insulation monitoring test report relay K7 (64) to operate, and the operation signal after its normally open contact closes is sent to the remote leakage test module (31) as the leakage test result of the end of the three-phase high-voltage line.

5. The system according to claim 1, characterized in that, The grounding resistance detection module (25) detects the grounding resistance value according to the far leakage test command, including: The grounding resistance detection module (25) detects the small grounding resistance Rx (251) according to the grounding resistance detection command, and obtains the grounding resistance value data of the small grounding resistance Rx (251); The grounding resistance detection module (25) consists of three measuring electrodes: N, P, and Q. The N electrode lead is connected to the test resistor R. S (43) Between the small grounding resistor Rx (251) and the grounding grid, a measuring grounding electrode Pd (252) is driven in 5 meters away from the grounding grid, and a measuring grounding electrode Qd (253) is driven in 5 meters away from the grounding electrode Pd (252), so that the P electrode lead is connected to the grounding electrode Pd (252) and the Q electrode lead is connected to the grounding electrode Qd (253).

6. The system according to claim 5, characterized in that, The grounding resistance detection module (25) further includes detecting the grounding resistance value according to the far leakage test command: The grounding resistance detection module (25) detects the large grounding resistance Rd (259) according to the grounding resistance detection command, and obtains the grounding resistance value data of the large grounding resistance Rd (259); The grounding resistance detection module (25) consists of three measuring electrodes: N, P, and Q. The N electrode lead is connected to the test resistor R. S (43) is connected to the grounding grid (450) between and via the large grounding resistor Rd (259), and the P electrode and the Q electrode are connected together to the grounding electrode of the equipment housing.

7. The system according to claim 6, characterized in that, The anti-violation cloud system (17) receives the grounding resistance data of the small grounding resistance Rx (251) or the grounding resistance data of the large grounding resistance Rd (259) sent by the grounding resistance detection module (25) of the remote leakage test device (12) via the underground communication system (13), the ground communication system (15) and the remote leakage communication module (23). When the grounding resistance data of the small grounding resistance Rx (251) exceeds the specified small grounding resistance value or when the grounding resistance data of the large grounding resistance Rd (259) exceeds the specified large grounding resistance value, it sends a command to the remote leakage test device (12) to drive the grounding electrode suspension lockout relay K3 (250) to operate, and its normally closed contact K31 (42) is opened, and the lockout test continues.

8. The system according to claim 1, characterized in that, The remote communication module (23) includes: The signal conversion circuit module (191) has multiple interface circuits connected to its input terminal and a signal processing module (192) connected to its output terminal. A remote controller (193) connected to the input terminal of the signal processing module (192) is used to send remote control signals to the signal processing module (192); Multiple antennas connected to the output of the signal processing module (192) are used to send wireless signals to the downhole communication system (13); The plurality of interface circuits include: an anti-violation signal interface circuit (205), an electrical / non-electrical signal interface circuit (203), a grounding resistance test signal interface circuit (205), and a remote leakage detection signal interface circuit (207); The plurality of antennas include: Anti-violation antenna (195) installed outside the explosion-proof enclosure; Antenna A (197) is installed inside an explosion-proof enclosure and transmits wireless signals through the observation window of the explosion-proof enclosure; Antenna B (199) is installed inside an explosion-proof enclosure and transmits wireless signals through the gaps in the explosion-proof enclosure.

9. The system according to claim 8, characterized in that, The anti-violation antenna (195) is connected to the remote leakage communication module (23) located inside the remote leakage explosion-proof enclosure (21) via a communication line sleeve (118) fixed on the explosion-proof enclosure partition (115) and a cable entry device (117) fixed on the remote leakage explosion-proof enclosure (21). The anti-violation antenna (195) is installed inside the anti-violation cover sensor (107) or the protective cover (99) of the anti-violation technology product; The communication line is an optical fiber or a coaxial cable.

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