High-voltage isolation switch testing device and method

Abstract

The invention discloses a high-voltage isolating switch testing device and method. The high-voltage isolating switch testing device comprises a controller and a display device, the display equipment is electrically connected with the controller and is used for receiving a fault phenomenon input by a user and transmitting the fault phenomenon to the controller; the fault phenomena at least comprise a switching-on fault and a switching-off fault; reference points which are acquired according to the high-voltage isolation switch loop and are arranged according to a first sequence are stored in the controller; the controller is used for acquiring a plurality of first reference points associated with the fault phenomenon and sending a detection instruction to the first reference points in sequence according to a first sequence; the display device is also used for displaying the detection instruction and receiving a detection result corresponding to the detection instruction input by the user; the controller is used for obtaining the fault position of the high-voltage isolation switch loop according to the detection results of the plurality of first reference points. According to the technical scheme provided by the invention, the detection efficiency of the electrical loop fault of the high-voltage isolation switch can be improved.

Description

Technical Field

[0001] The present invention relates to the technical field of power distribution network, and in particular to a high-voltage isolating switch testing device and method. Background Art

[0002] The high-voltage disconnector is the most common electrical equipment in the power system. It is used to isolate the power supply and provide a clear disconnection point between the maintenance equipment and the live equipment. In addition, the high-voltage disconnector can be switched according to the operation mode required by the power system in combination with the circuit breaker, thereby changing the wiring form of the power system. However, the high-voltage disconnector is operated most frequently and has a very high probability of failure.

[0003] At present, the troubleshooting technology for the electrical circuit faults of high-voltage disconnectors adopts manual troubleshooting. Moreover, troubleshooting requires operators to check the electrical drawings and actual wiring components one by one, but these drawings are easily unclear or even lost during management and use. These situations cause troubleshooting to rely entirely on the skills and experience of professional technicians, which is inefficient, causing power transmission interruptions, grid congestion, reduced power supply efficiency, and low safety efficiency, which seriously affects social and economic benefits. Summary of the invention

[0004] The embodiments of the present invention provide a high-voltage isolating switch testing device and method to improve the efficiency of detecting electrical circuit faults of the high-voltage isolating switch.

[0005] In a first aspect, an embodiment of the present invention provides a high-voltage isolating switch testing device, including: a controller and a display device;

[0006] The display device is electrically connected to the controller, and is used to receive a fault phenomenon input by a user and transmit it to the controller; the fault phenomenon at least includes a closing fault and an opening fault;

[0007] The controller stores reference points arranged in a first order obtained according to the high-voltage disconnector circuit; the controller is used to obtain multiple first reference points associated with the fault phenomenon, and issue detection instructions to the first reference points in sequence according to the first order;

[0008] The display device is also used to display the detection instruction and receive the detection result corresponding to the detection instruction input by the user; the controller is used to obtain the fault position of the high-voltage isolation switch circuit according to the detection results of the multiple first reference points.

[0009] In a second aspect, an embodiment of the present invention further provides a high-voltage isolating switch testing method, including a high-voltage isolating switch testing device provided by any embodiment of the present invention, including:

[0010] The display device receives the fault phenomenon input by the user and transmits it to the controller; the fault phenomenon at least includes a closing fault and an opening fault;

[0011] The controller obtains reference points arranged in a first order according to the high-voltage isolating switch circuit;

[0012] The controller acquires a plurality of first reference points associated with the fault phenomenon, and issues detection instructions to the first reference points in sequence according to the first sequence;

[0013] The display device displays the detection instruction and receives the detection result corresponding to the detection instruction input by the user;

[0014] The controller obtains the fault position of the high-voltage isolation switch circuit according to the detection results of the multiple first reference points.

[0015] In the present invention, the high-voltage isolating switch test device includes a controller and a display device; the display device is electrically connected to the controller, and is used to receive the fault phenomenon input by the user and transmit it to the controller; the fault phenomenon includes at least a closing fault and an opening fault; the controller stores reference points arranged in a first order obtained according to the high-voltage isolating switch circuit; the controller is used to obtain multiple first reference points associated with the fault phenomenon, and issue detection instructions to the first reference points in sequence according to the first order; the display device is also used to display the detection instruction and receive the detection result corresponding to the detection instruction input by the user; the controller is used to obtain the fault position of the high-voltage isolating switch circuit according to the detection results of multiple first reference points. This embodiment effectively improves the detection efficiency of the electrical circuit fault of the high-voltage isolating switch. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 A schematic structural diagram of a high-voltage isolating switch testing device provided by an embodiment of the present invention;

[0017] Figure 2 A schematic structural diagram of another high-voltage isolating switch testing device provided by an embodiment of the present invention;

[0018] Figure 3 A schematic diagram of the structure of a high-voltage isolating switch circuit provided by an embodiment of the present invention;

[0019] Figure 4 for Figure 3 A schematic diagram of the structure of a local area of ​​a medium and high voltage disconnector circuit;

[0020] Figure 5 A closing fault tree diagram provided by an embodiment of the present invention;

[0021] Figure 6 A switch-off fault tree diagram provided by an embodiment of the present invention;

[0022] Figure 7 A schematic flow chart of a high-voltage isolating switch testing method provided in an embodiment of the present invention. DETAILED DESCRIPTION

[0023] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention. It should also be noted that, for ease of description, only parts related to the present invention, rather than all structures, are shown in the accompanying drawings.

[0024] The electrical circuit of the high-voltage disconnector is based on the electric operation principle of the disconnector, and the various electrical components in the electrical circuit are arranged according to certain logical conditions. Each component in the circuit corresponds to each necessary and sufficient condition in the operation logic. The circuit diagram logic is complex, there are many components, there are various troubleshooting methods, which are used alternately, the operation is complex and the safety is low.

[0025] At present, the troubleshooting technology of the electrical circuit of the high-voltage disconnector adopts manual troubleshooting. Due to the difference in the skill level of the technicians, they face problems such as unclear troubleshooting ideas, unskilled use of drawings, and use of wrong troubleshooting methods. As a result, the troubleshooting time shows an increasing trend as the skill level of the personnel decreases, and the troubleshooting time is relatively uncertain. When troubleshooting the electrical fault of the disconnector, professional technicians must first find the drawing materials. According to the drawing materials, they can determine the troubleshooting points and corresponding troubleshooting methods, and accurately determine the fault location. However, these drawings are not properly managed, and they are damaged and unclear during use. Professional technicians need to spend a lot of time to find the drawings, and some are even lost. Moreover, the troubleshooting methods are not unified and scientific. Sometimes the resistance method is used, sometimes the voltage method is used, and the multimeter gear is frequently switched. Using the wrong troubleshooting method may cause a short circuit, burn the instrument, and even cause personal electric shock.

[0026] In order to solve the above problems, an embodiment of the present invention provides a high voltage isolating switch testing device, such as Figure 1 and Figure 2 As shown, Figure 1 A schematic diagram of the structure of a high-voltage isolating switch testing device provided by an embodiment of the present invention, Figure 2 A schematic structural diagram of another high-voltage isolating switch testing device provided by an embodiment of the present invention includes: a controller 11 and a display device 12;

[0027] The display device 12 is electrically connected to the controller 11, and is used to receive the fault phenomenon input by the user and transmit it to the controller 11; the fault phenomenon at least includes a closing fault and an opening fault;

[0028] The controller 11 stores reference points arranged in a first order obtained according to the high-voltage disconnector circuit; the controller 11 is used to obtain multiple first reference points associated with the fault phenomenon, and issue detection instructions to the first reference points in sequence according to the first order;

[0029] The display device 12 is also used to display the detection instruction and receive the detection result corresponding to the detection instruction input by the user; the controller 11 is used to obtain the fault position of the high-voltage disconnect switch circuit according to the detection results of multiple first reference points.

[0030] In an embodiment of the present invention, a high-voltage isolating switch test device includes a controller and a display device; the display device is electrically connected to the controller, and is used to receive a fault phenomenon input by a user and transmit it to the controller; the fault phenomenon includes at least a closing fault and an opening fault; the controller stores reference points arranged in a first order obtained according to the high-voltage isolating switch circuit; the controller is used to obtain multiple first reference points associated with the fault phenomenon, and issue detection instructions to the first reference points in sequence according to the first order; the display device is also used to display the detection instruction and receive the detection result corresponding to the detection instruction input by the user; the controller is used to obtain the fault position of the high-voltage isolating switch circuit according to the detection results of multiple first reference points. This embodiment effectively improves the detection efficiency of the electrical circuit fault of the high-voltage isolating switch.

[0031] The above is the core idea of ​​the present invention. The technical scheme in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0032] Optionally, the high-voltage isolating switch test device may further include: a voice broadcast device 13; the voice broadcast device 13 is electrically connected to the controller 11, and is used to voice broadcast the detection instruction and the fault location. Optionally, the high-voltage isolating switch test device may further include a speaker to achieve a sound amplification effect.

[0033] This embodiment provides a high-voltage isolating switch test device, the main body of the instrument is composed of a PLC (programmable controller) as the core processing device, an HMI liquid crystal display to display operating instructions and feedback troubleshooting results, and an intelligent voice announcer. A technical method (resistance method) is used to troubleshoot electrical faults of high-voltage isolating switches. During the troubleshooting, the isolating switch fault phenomenon is selected in the instrument, and the instrument will automatically generate operation instructions and display them on the HMI liquid crystal display, gradually guiding professional technicians to carry out troubleshooting. The technicians will feedback the troubleshooting results to the instrument each time. The instrument performs logical analysis based on the feedback results, guides the next troubleshooting point or generates troubleshooting results, displays them on the liquid crystal display, and performs voice broadcast reminders.

[0034] Optionally, the reference points may include a first-class reference point A, a second-class reference point B, a third-class reference point C and a fourth-class reference point D arranged in a first order; the first reference point includes at least one of the first-class reference point A, the second-class reference point B, the third-class reference point C and the fourth-class reference point D; each class of reference points includes at least one reference point.

[0035] Optionally, the controller 11 is specifically used to issue a resistance detection instruction with the first reference point as the center; the display device 12 is specifically used to receive a detection result corresponding to the resistance detection instruction input by the user; the detection result includes a high resistance result and a low resistance result; the resistance measurement value of the high resistance result is greater than the resistance measurement value of the low resistance result; the controller 11 is used to narrow the range of the fault location according to the detection result.

[0036] Figure 3 A schematic diagram of a high-voltage isolating switch circuit according to an embodiment of the present invention is provided. Figure 4 for Figure 3 A structural diagram of a local area 21 of a medium- and high-voltage disconnector circuit. Optionally, the high-voltage disconnector circuit includes at least: a first branch, a closing branch, and an opening branch; the first branch includes a first button 1TA, a first normally closed switch S2, a second normally closed switch F1, and a first normally open switch Q1 electrically connected in sequence; the closing branch includes a first relay coil KM1, a first sub-switch of the first double-control switch S1, a second relay normally closed switch K2, and a fourth button S4 electrically connected in sequence; the opening branch includes a second relay coil KM2, a second sub-switch of the first double-control switch S1, a first relay normally closed switch K1, and a fifth button S5 electrically connected in sequence; the first normally open switch Q1 of the first branch is electrically connected to the first relay coil KM1 of the closing branch; the first normally open switch Q1 of the first branch is electrically connected to the second relay coil KM2 of the opening branch. 2; the second relay normally closed switch K2 is also electrically connected to the third sub-switch of the second double-control switch S7; the first relay normally closed switch K1 is also electrically connected to the fourth sub-switch of the second double-control switch S7; wherein, a first connection point B2 is formed between the first normally open switch Q1 and the first relay coil KM1; a second connection point C3 is formed between the second relay normally closed switch K2 and the first sub-switch of the first double-control switch S1; a third connection point C4 is formed between the first normally closed switch S2 and the second normally closed switch F1; a fourth connection point D8 is formed between the first button 1TA and the first normally closed switch S2; the first connection point B2 serves as a second-type reference point B; the second connection point C3 and the third connection point C4 serve as a third-type reference point C; and the fourth connection point D8 serves as a fourth-type reference point D.

[0037] The specific adjustment process of the controller is as follows:

[0038] The first step is to introduce expert analysis to analyze the logic of the high-voltage disconnector electrical circuit design. From the disconnector electrical circuit diagram, the disconnector electrical circuit belongs to a conditional logic. Each component in the diagram corresponds to each necessary and sufficient condition in the operation logic. Since there are many conditions in the circuit, the expert analysis method is introduced when troubleshooting. Each time the troubleshooting is carried out, all situations are divided into "possible" and "impossible", and then all "impossible" situations are discarded, which effectively improves the troubleshooting efficiency. Figure 1 That is, the electrical circuit of the isolating switch is divided into several parts according to the expert analysis method, and the reference point of each expert analysis method is determined in the order of letters A, B, C, and D.

[0039] The second step is to use the tree diagram to sort out the logic of troubleshooting the disconnector electrical circuit. Based on the analysis of the disconnector electrical circuit expert analysis method, the tree diagram is used to sort out the logic of troubleshooting the disconnector electrical circuit. Through the detection and judgment of the benchmark points of the expert analysis method, the fault location (failed electrical components) is gradually found out. The whole process is logically clear, the conditions are sufficient, and the conclusions are accurate. The key logic diagram is used to carry out fault finding, achieving clear conditions, accurate judgment, and rapid positioning.

[0040] The third step is to use the isolating switch electrical circuit, which belongs to the traditional relay circuit. Compared with the microcomputer programming controller, it can realize the same logical control and the working method is the same. Therefore, the key logic diagram of the isolating switch fault detection is programmed, and the electrical drawings of various types of high-voltage isolating switches are stored in the built-in storage. Human-computer interaction is realized through the HMI LCD display, and the structural design of this product is designed according to the engineering practical design, so as to guide professional and technical personnel to conduct rapid troubleshooting of the isolating switch electrical faults and find the failed equipment and electrical components.

[0041] The following is a specific example: Figure 5A closing fault tree diagram provided for an embodiment of the present invention. Optionally, the fault phenomenon is a closing fault; the controller 11 is used to measure the resistance at both ends of the second relay coil KM2 within the first threshold range, and issue a first resistance detection instruction to obtain the ground resistance of the first connection point B2; the display device 12 is used to display the first resistance detection instruction and provide a high resistance control and a low resistance control; the controller 11 is also used to issue a second resistance detection instruction to obtain the ground resistance of the first contact connecting the second normally closed switch F1 and the first normally open switch Q1 when the high resistance control is selected; the controller 11 is also used to issue a third resistance detection instruction to obtain the second contact connecting the second relay normally closed switch K2 and the fourth button S4 when the low resistance control is selected, and to detect the ground resistance of the first connection point B2 to the first relay coil KM1 and the first normally open switch Q1. a third resistance of a third contact connected to the first sub-switch of a double-control switch S1; a display device 12 is used to display the second resistance detection instruction or the third resistance detection instruction, and provide a high resistance control and a low resistance control; the controller 11 is also used to issue a fourth resistance detection instruction to obtain the ground resistance of the fourth contact connected to the first button 1TA and the first normally closed switch S2 when the high resistance control of the second resistance detection instruction is selected; the controller 11 is also used to issue a fifth resistance detection instruction to obtain the ground resistance of the third connection point C4 when the low resistance control of the second resistance detection instruction is selected; the controller 11 is also used to issue a sixth resistance detection instruction to obtain the ground resistance of the second connection point C3 when the high resistance control of the third resistance detection instruction is selected. and a sixth resistor between the second contact and the third contact; the controller 11 is also used to issue a seventh resistance detection instruction to obtain a seventh resistance between the second contact and the end of the fourth button S4 away from the second contact when the low resistance control of the third resistance detection instruction is selected; the display device 12 is used to display the fourth resistance detection instruction, the fifth resistance detection instruction, the sixth resistance detection instruction or the seventh resistance detection instruction, and provide a high resistance control and a low resistance control; the controller 11 is also used to determine that the zero line of the high-voltage isolation switch circuit is virtually connected when the high resistance control of the fourth resistance detection instruction is selected; the controller 11 is also used to determine that the first normally closed switch S2 is faulty when the low resistance control of the fourth resistance detection instruction is selected; the controller 11 is also used to determine that the first normally closed switch S2 is faulty in the fifth resistance detection instruction The controller 11 is also used to determine that the second normally closed switch F1 is faulty when the high-resistance control of the fifth resistance detection instruction is selected; the controller 11 is also used to determine that the first normally open switch Q1 is faulty when the low-resistance control of the fifth resistance detection instruction is selected; the controller 11 is also used to determine that the first sub-switch of the first double-control switch S1 is faulty when the high-resistance control of the sixth resistance detection instruction is selected; the controller 11 is also used to determine that the second relay normally closed switch K2 is faulty when the low-resistance control of the sixth resistance detection instruction is selected; the controller 11 is also used to determine that the fourth button S4 is faulty when the high-resistance control of the seventh resistance detection instruction is selected; the controller 11 is also used to determine that the third sub-switch of the second double-control switch S7 is faulty when the low-resistance control of the seventh resistance detection instruction is selected.

[0042] Figure 6A trip fault tree diagram provided in an embodiment of the present invention, optionally, the fault phenomenon is a trip fault; the controller 11 is used to measure the resistance at both ends of the second relay coil KM2 to be within the first threshold range, and issue a first resistance detection instruction to obtain the ground resistance of the first connection point B2; the display device 12 is used to display the first resistance detection instruction and provide a high resistance control and a low resistance control; the controller 11 is also used to issue a second resistance detection instruction to obtain the ground resistance of the first contact connecting the second normally closed switch F1 and the first normally open switch Q1 when the high resistance control is selected; the controller 11 is also used to issue a third resistance detection instruction to obtain the fifth contact connecting the first relay normally closed switch K1 and the fifth button S5 when the low resistance control is selected, The fourth resistance of the sixth contact of the coil KM2 connected to the second sub-switch of the first double-control switch S1; the display device 12 is used to display the second resistance detection instruction or the third resistance detection instruction, and provide a high resistance control and a low resistance control; the controller 11 is also used to issue a fourth resistance detection instruction to obtain the ground resistance of the fourth contact of the first button 1TA connected to the first normally closed switch S2 when the high resistance control of the second resistance detection instruction is selected; the controller 11 is also used to issue a fifth resistance detection instruction to obtain the ground resistance of the third connection point C4 when the low resistance control of the second resistance detection instruction is selected; the controller 11 is also used to issue a sixth resistance detection instruction to obtain the ground resistance of the first relay normally closed switch K1 when the high resistance control of the third resistance detection instruction is selected. The controller 11 is also used to issue a seventh resistance detection instruction to obtain an eighth resistance between the sixth contact and the end of the fifth button S5 away from the sixth contact when the low resistance control of the third resistance detection instruction is selected; the display device 12 is used to display the fourth resistance detection instruction, the fifth resistance detection instruction, the sixth resistance detection instruction or the seventh resistance detection instruction, and provide a high resistance control and a low resistance control; the controller 11 is also used to determine that the zero line of the high-voltage isolation switch circuit is virtually connected when the high resistance control of the fourth resistance detection instruction is selected; the controller 11 is also used to determine that the first normally closed switch S2 is faulty when the low resistance control of the fourth resistance detection instruction is selected; the control The controller 11 is also used to determine that the second normally closed switch F1 is faulty when the high-resistance control of the fifth resistance detection instruction is selected; the controller 11 is also used to determine that the first normally open switch Q1 is faulty when the low-resistance control of the fifth resistance detection instruction is selected; the controller 11 is also used to determine that the first sub-switch of the first double-control switch S1 is faulty when the high-resistance control of the sixth resistance detection instruction is selected; the controller 11 is also used to determine that the first relay normally closed switch K1 is faulty when the low-resistance control of the sixth resistance detection instruction is selected; the controller 11 is also used to determine that the fifth button S5 is faulty when the high-resistance control of the seventh resistance detection instruction is selected; the controller 11 is also used to determine that the fourth sub-switch of the second double-control switch S7 is faulty when the low-resistance control of the seventh resistance detection instruction is selected.

[0043] Optionally, the high-voltage isolating switch circuit also includes: a control module; the first output end of the control module is electrically connected to the third sub-switch of the second double-control switch S7 and the fourth sub-switch of the second double-control switch S7 respectively; the first output point serves as the first type reference point A; the fault phenomenon also includes a control fault; the controller 11 is also used to issue a control resistance detection instruction to obtain the voltage of the first output point to ground; the display device 12 is used to display the resistance detection instruction and provide a high-resistance control and a low-resistance control; the controller 11 is also used to determine that the high-voltage isolating switch circuit is faulty when the low-resistance control of the control resistance detection instruction is selected; the controller 11 is also used to determine that the control module is faulty when the high-resistance control of the control resistance detection instruction is selected.

[0044] Based on the same concept, an embodiment of the present invention also provides a high-voltage isolating switch testing method. Figure 7 A flow chart of a high voltage isolating switch testing method provided by an embodiment of the present invention is shown as follows: Figure 7 As shown, the method of this embodiment includes the following steps:

[0045] Step S101: The display device receives a fault phenomenon input by a user and transmits it to a controller; the fault phenomenon at least includes a closing fault and an opening fault.

[0046] Step S102: The controller obtains reference points arranged in a first order based on the high-voltage disconnect switch circuit.

[0047] Step S103: The controller obtains a plurality of first reference points associated with the fault phenomenon, and issues detection instructions to the first reference points in sequence according to a first order.

[0048] Step S104: The display device displays the detection instruction and receives the detection result corresponding to the detection instruction input by the user.

[0049] Step S105: The controller obtains the fault position of the high-voltage disconnect switch circuit according to the detection results of the multiple first reference points.

[0050] In an embodiment of the present invention, a high-voltage isolating switch test device includes a controller and a display device; the display device is electrically connected to the controller, and is used to receive a fault phenomenon input by a user and transmit it to the controller; the fault phenomenon includes at least a closing fault and an opening fault; the controller stores reference points arranged in a first order obtained according to the high-voltage isolating switch circuit; the controller is used to obtain multiple first reference points associated with the fault phenomenon, and issue detection instructions to the first reference points in sequence according to the first order; the display device is also used to display the detection instruction and receive the detection result corresponding to the detection instruction input by the user; the controller is used to obtain the fault position of the high-voltage isolating switch circuit according to the detection results of multiple first reference points. This embodiment effectively improves the detection efficiency of the electrical circuit fault of the high-voltage isolating switch.

[0051] On the basis of the above embodiment, the controller is specifically used to issue a resistance detection instruction with the first reference point as the center; the display device is specifically used to receive the detection result corresponding to the resistance detection instruction input by the user; the detection result includes a high resistance result and a low resistance result; the resistance measurement value of the high resistance result is greater than the resistance measurement value of the low resistance result; the controller is used to narrow the range of the fault location according to the detection result. The high-voltage isolating switch test method in this embodiment is applicable to the high-voltage isolating switch test provided by the embodiment of the present invention, has the corresponding technical features, and has the beneficial effects of the corresponding technical features, which will not be repeated here.

[0052] Note that the above are only preferred embodiments of the present invention and the technical principles used. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described herein, and that various obvious changes, readjustments and substitutions can be made by those skilled in the art without departing from the scope of protection of the present invention. Therefore, although the present invention has been described in more detail through the above embodiments, the present invention is not limited to the above embodiments, and may include more other equivalent embodiments without departing from the concept of the present invention, and the scope of the present invention is determined by the scope of the appended claims.

Claims

1. A high voltage isolating switch testing device, characterized in that: include: Controllers and display devices; The display device is electrically connected to the controller, and is used to receive the fault phenomenon input by the user and transmit it to the controller; The fault phenomenon at least includes a closing fault and an opening fault; The controller stores reference points arranged in a first order obtained according to the high-voltage disconnector circuit; the controller is used to obtain multiple first reference points associated with the fault phenomenon, and issue detection instructions to the first reference points in sequence according to the first order; The display device is also used to display the detection instruction and receive the detection result corresponding to the detection instruction input by the user; the controller is used to obtain the fault position of the high-voltage isolation switch circuit according to the detection results of the multiple first reference points.

2. The high-voltage isolating switch testing device according to claim 1, characterized in that: Also includes: Voice broadcast equipment; The voice broadcasting device is electrically connected to the controller and is used for voice broadcasting the detection instruction and the fault location.

3. The high-voltage isolating switch testing device according to claim 1, characterized in that: The reference points include first-class reference points, second-class reference points, third-class reference points and fourth-class reference points arranged in a first order; the first reference points include at least one of the first-class reference points, second-class reference points, third-class reference points and fourth-class reference points; each class of reference points includes at least one reference point.

4. The high-voltage isolating switch testing device according to claim 3, characterized in that: The controller is specifically used to issue a resistance detection instruction with the first reference point as the center; The display device is specifically used to receive a detection result corresponding to the resistance detection instruction input by a user; the detection result includes a high resistance result and a low resistance result; the resistance measurement value of the high resistance result is greater than the resistance measurement value of the low resistance result; The controller is used to narrow the range of the fault location according to the detection result.

5. The high-voltage isolating switch testing device according to claim 1, characterized in that: The high-voltage disconnect switch circuit at least includes: a first branch, a closing branch and an opening branch; The first branch includes a first button, a first normally closed switch, a second normally closed switch and a first normally open switch which are electrically connected in sequence; The closing branch includes a first relay coil, a first sub-switch of a first double-control switch, a second relay normally closed switch and a fourth button which are electrically connected in sequence; The opening branch includes a second relay coil, a second sub-switch of the first double-control switch, a first relay normally closed switch and a fifth button which are electrically connected in sequence; The first normally open switch of the first branch is electrically connected to the first relay coil of the closing branch; the first normally open switch of the first branch is electrically connected to the second relay coil of the opening branch; the second relay normally closed switch is also electrically connected to the third sub-switch of the second double-control switch; the first relay normally closed switch is also electrically connected to the fourth sub-switch of the second double-control switch; Wherein, a first connection point is formed between the first normally open switch and the first relay coil; a second connection point is formed between the second relay normally closed switch and the first sub-switch of the first double-control switch; a third connection point is formed between the first normally closed switch and the second normally closed switch; and a fourth connection point is formed between the first button and the first normally closed switch; The first connection point is used as a second type of reference point; the second connection point and the third connection point are used as third type of reference points; and the fourth connection point is used as a fourth type of reference point.

6. The high-voltage isolating switch testing device according to claim 5, characterized in that: The fault phenomenon is a closing fault; The controller is used to measure the resistance across the second relay coil to be within a first threshold range, and issue a first resistance detection instruction to obtain the resistance of the first connection point to ground; The display device is used to display the first resistance detection instruction and provide a high resistance control and a low resistance control; The controller is further configured to, when the high-resistance control is selected, issue a second resistance detection instruction to obtain the ground resistance of the first contact connecting the second normally closed switch and the first normally open switch; the controller is further configured to, when the low-resistance control is selected, issue a third resistance detection instruction to obtain the second contact connecting the second relay normally closed switch and the fourth button, and the third resistance of the third contact connecting the first relay coil and the first sub-switch of the first double-control switch; The display device is used to display the second resistance detection instruction or the third resistance detection instruction, and provide a high resistance control and a low resistance control; The controller is further configured to, when the high-resistance control of the second resistance detection instruction is selected, issue a fourth resistance detection instruction to obtain the ground resistance of the fourth contact connecting the first button and the first normally closed switch; the controller is further configured to, when the low-resistance control of the second resistance detection instruction is selected, issue a fifth resistance detection instruction to obtain the ground resistance of the third connection point; the controller is further configured to, when the high-resistance control of the third resistance detection instruction is selected, issue a sixth resistance detection instruction to obtain the sixth resistance between the second connection point and the third contact; the controller is further configured to, when the low-resistance control of the third resistance detection instruction is selected, issue a seventh resistance detection instruction to obtain the seventh resistance between the second contact and the end of the fourth button away from the second contact; The display device is used to display the fourth resistance detection instruction, the fifth resistance detection instruction, the sixth resistance detection instruction or the seventh resistance detection instruction, and provide a high resistance control and a low resistance control; The controller is also used to determine that the zero line of the high-voltage isolation switch circuit is virtually connected when the high-resistance control of the fourth resistance detection instruction is selected; the controller is also used to determine that the first normally closed switch is faulty when the low-resistance control of the fourth resistance detection instruction is selected; the controller is also used to determine that the second normally closed switch is faulty when the high-resistance control of the fifth resistance detection instruction is selected; the controller is also used to determine that the first normally open switch is faulty when the low-resistance control of the fifth resistance detection instruction is selected; the controller is also used to determine that the first sub-switch of the first double-control switch is faulty when the high-resistance control of the sixth resistance detection instruction is selected; the controller is also used to determine that the second relay normally closed switch is faulty when the low-resistance control of the sixth resistance detection instruction is selected; the controller is also used to determine that the fourth button is faulty when the high-resistance control of the seventh resistance detection instruction is selected; the controller is also used to determine that the third sub-switch of the second double-control switch is faulty when the low-resistance control of the seventh resistance detection instruction is selected.

7. The high-voltage isolating switch testing device according to claim 5, characterized in that: The fault phenomenon is a trip fault; The controller is used to measure the resistance across the second relay coil to be within a first threshold range, and issue a first resistance detection instruction to obtain the resistance of the first connection point to ground; The display device is used to display the first resistance detection instruction and provide a high resistance control and a low resistance control; The controller is further configured to, when the high-resistance control is selected, issue a second resistance detection instruction to obtain the ground resistance of the first contact connecting the second normally closed switch and the first normally open switch; the controller is further configured to, when the low-resistance control is selected, issue a third resistance detection instruction to obtain the fourth resistance of the sixth contact connecting the first relay normally closed switch and the fifth button, and the fifth contact connecting the second relay coil and the second sub-switch of the first double-control switch; The display device is used to display the second resistance detection instruction or the third resistance detection instruction, and provide a high resistance control and a low resistance control; The controller is further configured to, when the high-resistance control of the second resistance detection instruction is selected, issue a fourth resistance detection instruction to obtain the ground resistance of the fourth contact connecting the first button and the first normally closed switch; the controller is further configured to, when the low-resistance control of the second resistance detection instruction is selected, issue a fifth resistance detection instruction to obtain the ground resistance of the third connection point; the controller is further configured to, when the high-resistance control of the third resistance detection instruction is selected, issue a sixth resistance detection instruction to obtain the fifth resistance between the seventh contact connecting the first relay normally closed switch and the second sub-switch of the first double-control switch and the sixth contact; the controller is further configured to, when the low-resistance control of the third resistance detection instruction is selected, issue a seventh resistance detection instruction to obtain the eighth resistance between the sixth contact and the end of the fifth button away from the sixth contact; The display device is used to display the fourth resistance detection instruction, the fifth resistance detection instruction, the sixth resistance detection instruction or the seventh resistance detection instruction, and provide a high resistance control and a low resistance control; The controller is also used to determine that the zero line of the high-voltage isolation switch circuit is virtually connected when the high-resistance control of the fourth resistance detection instruction is selected; the controller is also used to determine that the first normally closed switch is faulty when the low-resistance control of the fourth resistance detection instruction is selected; the controller is also used to determine that the second normally closed switch is faulty when the high-resistance control of the fifth resistance detection instruction is selected; the controller is also used to determine that the first normally open switch is faulty when the low-resistance control of the fifth resistance detection instruction is selected; the controller is also used to determine that the first sub-switch of the first double-control switch is faulty when the high-resistance control of the sixth resistance detection instruction is selected; the controller is also used to determine that the first relay normally closed switch is faulty when the low-resistance control of the sixth resistance detection instruction is selected; the controller is also used to determine that the fifth button is faulty when the high-resistance control of the seventh resistance detection instruction is selected; the controller is also used to determine that the fourth sub-switch of the second double-control switch is faulty when the low-resistance control of the seventh resistance detection instruction is selected.

8. The high-voltage isolating switch testing device according to claim 5, characterized in that: The high-voltage isolating switch circuit also includes: a control module; The first output end of the control module is electrically connected to the third sub-switch of the second double-control switch and the fourth sub-switch of the second double-control switch respectively; the first output point is used as a first-type reference point; The fault phenomenon also includes control fault; The controller is also used to issue a control resistance detection instruction to obtain the voltage of the first output point to ground; the display device is used to display the resistance detection instruction and provide a high resistance control and a low resistance control; the controller is also used to determine that the high-voltage isolation switch circuit is faulty when the low resistance control of the control resistance detection instruction is selected; the controller is also used to determine that the control module is faulty when the high resistance control of the control resistance detection instruction is selected.

9. A high voltage isolating switch testing method, characterized in that: The high-voltage isolating switch testing device according to any one of claims 1 to 8 comprises: The display device receives the fault phenomenon input by the user and transmits it to the controller; the fault phenomenon at least includes a closing fault and an opening fault; The controller obtains reference points arranged in a first order according to the high-voltage isolating switch circuit; The controller acquires a plurality of first reference points associated with the fault phenomenon, and issues detection instructions to the first reference points in sequence according to the first sequence; The display device displays the detection instruction and receives the detection result corresponding to the detection instruction input by the user; The controller obtains the fault position of the high-voltage isolation switch circuit according to the detection results of the multiple first reference points.

10. The high-voltage isolating switch testing method according to claim 9, characterized in that: The controller is specifically used to issue a resistance detection instruction with the first reference point as the center; The display device is specifically used to receive a detection result corresponding to the resistance detection instruction input by a user; the detection result includes a high resistance result and a low resistance result; the resistance measurement value of the high resistance result is greater than the resistance measurement value of the low resistance result; The controller is used to narrow the range of the fault location according to the detection result.

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