CN105610079A - Microcomputer anti-misoperation locking system and method for high-voltage switch cabinet of substation - Google Patents

Abstract

A microcomputer anti-misoperation locking system and method for a high-voltage switchgear in a substation. The high-voltage switchgear in the substation includes a main transformer switchgear, a main Switch cabinets, bus voltage transformer cabinets, and line switch cabinets; the high-voltage switch cabinet microcomputer anti-misoperation locking system includes: adding Install five-proof locks with anti-misoperation locking function; in the front cabinets of main transformer switch cabinets, main transformer switch cabinets, capacitor switch cabinets, grounding transformer switch cabinets, bus-break switch cabinets, bus-break switch cabinets, and bus voltage transformer cabinets The door, the rear cabinet door, and the rocking hole of the trolley are respectively equipped with five-proof locks with the function of anti-mistake locking; the method described is: the operator issues an invoice according to the dispatching order, and the prepared operation ticket is checked by the positive value and the value length. After signing, the standby line of the high-voltage switchgear can be switched from running to switching and line maintenance.

Description

A microcomputer anti-misoperation locking system and method for high-voltage switchgear in substations

technical field

The invention relates to a microcomputer anti-misoperation locking system and method for a high-voltage switchgear in a substation, belonging to the field of electric equipment tools.

technical background

In modern society, electricity plays an extremely important role in the national economy, national security, and people's daily life. As an important electrical equipment in the power system, high-voltage switchgear is generally used in 10-35kV substation equipment. Focusing on the transmission and protection control of electric energy, it provides users with high-quality electric energy. With the rapid development of substation automation technology and the increasing requirements for power supply reliability, the role of switchgear in substations is also more prominent. Therefore, how to ensure the safe and reliable operation of the high-voltage switchgear in the substation has become an important task in the operation and maintenance of power system substations.

The installation of anti-misoperation locking devices in high-voltage switchgear is a fundamental measure for power production to ensure the safety of people, power grids, and equipment. According to the "State Grid Corporation of Electricity Safety Work Regulations", the high-voltage switchgear should be equipped with a complete anti-misoperation locking device, and have a complete and reliable anti-misoperation locking function. If it does not have the anti-misoperation locking function, a mechanical lock should be installed. However, there are still some switchgears that are not equipped with a complete anti-misoperation locking device, relying only on the anti-misoperation locking function that comes with the switchgear, and even some switchgear cabinets are only fixed with screws to prevent staff from misuse. enter. Looking at the misoperation and personal injury accidents that occurred in electric power companies this year, the proportion of accidents caused by incomplete, unreliable or unauthorized unlocking of switchgear anti-misoperation locking devices accounted for as high as 60%.

In order to effectively prevent personal and major equipment accidents caused by misoperation of high-voltage switchgear, the State Grid Corporation has formulated a series of anti-misoperation management regulations and anti-misoperation device management methods, but in actual production and actual work, misoperation accidents of switchgear are still Happens frequently.

Contents of the invention

The purpose of the present invention is to overcome the deficiencies in the existing high-voltage switchgear anti-misoperation locking function, and provide a device with simple structure, convenient use and operation, which can effectively reduce the probability of misoperation accidents caused by the incomplete anti-misoperation locking function of the switchgear itself. A microcomputer anti-misoperation locking system and method for a high-voltage switchgear in a substation.

The object of the present invention is accomplished through the following technical scheme, a microcomputer anti-misoperation locking system for a high-voltage switchgear in a substation. Substation switchgear, bus-separation switchgear, bus-separation switchgear, bus voltage transformer cabinet, line switchgear; the high-voltage switchgear microcomputer anti-misoperation locking system includes: the front cabinet door and the rear cabinet door of the line switchgear Five anti-locks with anti-misoperation locking function are respectively installed at the rocker hole of the trolley and the grounding knife; in the main transformer switch cabinet, the main transformer switch cabinet, the capacitor switch cabinet, the grounding Five-proof locks with anti-misoperation locking function are installed on the front cabinet door, rear cabinet door, and trolley swing hole of the knife cabinet and the bus voltage transformer cabinet.

As a preference: the high-voltage switchgear includes 10kV switchgear, 20kV switchgear, and 35kV switchgear: the five-proof lock of the high-voltage switchgear can be realized: (1) to prevent mis-distribution and mis-closure of the switch, (2) To prevent pulling and closing the isolation switch with load, 3) to prevent the live connection (closing) of the ground wire (ground switch), (4) to prevent the ground wire (ground switch) from closing the switch (isolation switch) and (5) to prevent The "five prevention" function of stray into the electrified interval.

A microcomputer anti-misoperation locking method using the microcomputer anti-misoperation locking system of a high-voltage switchgear in a substation. The microcomputer anti-misoperation locking method includes:

First of all, the operator issues an invoice according to the dispatching order, and changes the standby line of the high-voltage switchgear from operation to an operation ticket for line maintenance, which specifically includes the following procedures:

1) Pull the switch of the standby line;

2) Check the disconnection position determined by the line switch to be used;

3) Shake the standby circuit switch trolley from the working position to the test position to fix and check;

4) Take off the bus differential outlet pressure plate LPxx of the line switch to be used, and check;

5) Check the standby line switch to determine the cold standby;

6) Switch the bus differential protection switch QB of the high-voltage switchgear to the bus differential back position;

7) Check that the BP-2B device interface on the bus differential protection screen of the high-voltage switchgear displays differential exit and differential lock exit;

8) Use 4 shorting screws to short-circuit and ground the 3SD rheological side of the substation 648 line switch bus difference CT terminal;

9) Remove the bus differential CT terminal 3SD of the 648 line switch in the substation and connect it to the bus differential circuit with 4 connecting screws;

10) Check that the bus differential protection of the high-voltage switchgear has no action and abnormal signals;

11) Switch the bus differential protection switch QB of the high-voltage switchgear to the bus differential switch position;

12) Check that the BP-2B device interface on the bus differential protection screen of the high-voltage switchgear displays differential input and differential locking input;

13) Remove the secondary plug-in of the standby circuit switch trolley;

14) Pull the circuit switch trolley to be used from the test position to the outside of the cabinet and fix it, and check;

15) At the switch cabinet of the line to be used, push the line electric inspection trolley from the outside of the cabinet to the test position, then shake it to the working position and fix it, and check;

16) Conduct a three-phase electric test at the static contact on the line side of the line electric test trolley. After confirming that there is no voltage, shake the line electric test trolley from the working position to the test position, pull it out of the cabinet and fix it, and check;

17) Close the grounding knife of the standby line and check;

18) Disconnect the air switch 3DK2 of the standby line switch to control the power supply;

After the prepared operation ticket has been verified and signed by the positive value and the value chief, and the dispatching order is issued, the switching operation of the standby line of the high-voltage switchgear can be changed from operation to switch and line maintenance.

As a preference: before the switchgear switching operation is executed, the operator will issue a graphic invoice in the background five-defense system according to the operation steps to verify the rationality of the operation steps;

When performing on-site operations, after the graphical invoicing is completed, the computer key is transferred, and the operator executes the operation item by item according to the content of the operation ticket. When the operation content that violates the anti-misoperation locking logic is executed, the computer key realizes forced locking, and at the same time sends out an alarm and prompt information. Guide the operator to perform the operation correctly, so as to achieve the purpose of preventing misoperation;

During remote operation, the operator sends a permission signal to the monitoring system through the host to unlock the remote control lock of the corresponding node. After the operation is completed, the host updates the device status to the current actual status.

As a preference: According to the requirements of the high-voltage switchgear anti-misoperation specification, the standby line of the high-voltage switchgear is changed from operation to switch and line maintenance. The operation ticket needs to pass the five-proof verification for an operation, which specifically includes the following 4 steps:

1) Pull the switch of the standby line;

2) Shake the waiting line switch trolley from the working position to the test position, and check;

3) Pull the circuit switch trolley to be used from the test position to the outside of the cabinet to fix it, and check it;

4) Close the grounding knife of the standby line and check;

Step 1) In the operation of step 1, after the verification of the five-proof system, it can help the operator to check the name of the equipment, and avoid the occurrence of vicious misoperation accidents such as the operator mistakenly distinguishing other interval switches in the background;

Step 2) In the operation of step 2, by installing five anti-locks on the switch cabinet trolley shaking hole of the standby line of the high-voltage switch cabinet, it can effectively prevent the staff from entering the charged interval by mistake, and shake the switch trolley from the working position to the Occurrence of misoperation accidents at the test position;

Step 3) In the operation of step 3, by installing five anti-locks on the front door of the switch cabinet of the standby line of the high-voltage switch cabinet, it can effectively prevent the staff from working under high pressure and inattention. The occurrence of such accidents when the front door of the switchgear is opened when the switchgear is in the position;

Step 4) In the operation of step 4, by installing five anti-locks on the switch cabinet line grounding knife of the standby line of the high-voltage switch cabinet, it can effectively prevent the staff from closing the grounding knife switch when it is charged or the switch trolley is not in the test position. Occurrence of vicious misuse accidents.

Compared with the prior art, the invention improves the anti-misoperation locking function of the high-voltage switchgear, and has the advantages of greatly reducing the probability of misoperation accidents, effectively ensuring operation, working safety of maintenance personnel, and safety and reliability of power grid equipment.

Description of drawings

Fig. 1 is a schematic diagram of a 35kV line switch cabinet of the present invention, which is equipped with five anti-misoperation locking devices at the front cabinet door, rear upper cabinet door, rear lower cabinet door, trolley rocker hole, and line grounding knife.

Fig. 2 is a schematic diagram of an anti-misoperation locking device with five anti-locks installed on the front cabinet door, the rear upper cabinet door, the rear lower cabinet door, and the swing hole of the trolley for a 35kV switch cabinet other than the line switch cabinet of the present invention.

Fig. 3 is another 20kV line switchgear of the present invention, which is equipped with five anti-error locks at the front middle cabinet door, front lower cabinet door, rear upper cabinet door, rear lower cabinet door, trolley shake hole, and line grounding knife. Schematic diagram of the operating locking device.

Fig. 4 is another 20kV switchgear except the line switchgear of the present invention, which is equipped with five anti-misoperations on the front middle cabinet door, the front lower cabinet door, the rear upper cabinet door, the rear lower cabinet door, and the swing hole of the trolley. Schematic diagram of the locking device.

Fig. 5 is a schematic diagram of a 10kV line switch cabinet according to the present invention, which is equipped with five anti-misoperation locking devices at the front cabinet door, rear upper cabinet door, rear lower cabinet door, trolley shaker hole, and line grounding knife.

Fig. 6 is a schematic diagram of an anti-misoperation locking device with five anti-misoperation locks installed on the front cabinet door, the rear upper cabinet door, the rear lower cabinet door, and the swing hole of the trolley for a 10kV switch cabinet other than the line switch cabinet of the present invention.

Figure 7 is a schematic diagram of a 35kV standby 750 switchgear with five anti-locks installed.

detailed description

A microcomputer anti-misoperation locking system for a high-voltage switchgear in a substation according to the present invention. The high-voltage switchgear in a substation includes a main transformer switchgear, a main transformer switchgear, a capacitor switchgear, a grounding transformer switchgear, and a busbar switchgear. , bus switch cabinet, bus voltage transformer cabinet, line switch cabinet; the high-voltage switch cabinet microcomputer anti-misoperation locking system includes: front cabinet door, rear cabinet door, trolley shake hole, grounding switch cabinet Install five anti-locks with anti-misoperation locking function; in the main transformer switch cabinet, main transformer switch cabinet, capacitor switch cabinet, grounding substation switch cabinet, bus branch switch cabinet, bus switch switch cabinet, bus voltage transformer The front cabinet door, rear cabinet door and trolley shake hole are respectively equipped with five anti-locks with anti-misoperation locking function.

The high-voltage switchgear includes 10kV switchgear, 20kV switchgear, and 35kV switchgear: the five-proof lock of the high-voltage switchgear can be realized: (1) prevent mis-distribution and mis-close switch, (2) prevent load Pulling and closing the isolation switch, 3) preventing live connection (closing) the grounding wire (grounding switch), (4) preventing the grounding wire (grounding switch) from closing the switch (isolation switch) and (5) preventing accidental entry of charged Interval "five defenses" function.

The present invention will be described in detail below in conjunction with accompanying drawings: As shown in Fig. 1, a kind of substation high-voltage switchgear microcomputer anti-misoperation locking method of the present invention, it comprises the front cabinet door of 35kV line switchgear, the dolly shake hole , line grounding switch, rear upper cabinet door, and rear lower cabinet door are equipped with five-proof locks with anti-misoperation functions; the five-proof locks include the following anti-misoperation functions: (1) Prevent mis-opening and mis-closing switches ; (2) Prevent the load from pulling and closing the isolation switch; (3) Prevent the live switch from closing the ground switch; (4) Prevent the ground switch from closing the isolation switch; (5) Prevent accidental entry into the charged interval.

As shown in Figure 2, a microcomputer anti-misoperation locking method for high-voltage switchgear in a substation according to the present invention includes 35kV main transformer switchgear, main transformer switchgear, capacitor switchgear, grounding transformer switchgear, busbar switch The front cabinet door, the trolley swing hole, the rear upper cabinet door, and the rear lower cabinet door of the cabinet, bus switch knife cabinet, and bus voltage transformer cabinet are equipped with five-proof locks with anti-misoperation functions; the five-proof locks include the following Anti-misoperation function: (1) Prevent mis-opening and closing of switches by mistake; (2) Prevent pulling and closing the isolation switch with load; 3) Prevent charged (closed) grounding wire (grounding switch); The grounding wire (grounding switch) closes the switch (isolation switch); (5) prevents the electrified interval from entering by mistake.

As shown in Fig. 3, a kind of substation high-voltage switchgear microcomputer anti-misoperation locking method according to the present invention, it includes the front middle cabinet door, front lower cabinet door, trolley shake hole, line grounding switch knife, The rear upper cabinet door and the rear lower cabinet door are equipped with five anti-mislocks with anti-misoperation locking function; the anti-misoperation locking functions corresponding to the five anti-locks are: (1) to prevent mis-opening and mis-closing switches; (2) to prevent Pulling and closing the isolation switch with load; (3) Preventing the live switch from closing the ground switch; (4) Preventing the grounding switch from closing the isolation switch; (5) Preventing accidental entry into the charged interval.

As shown in Figure 4, a microcomputer anti-misoperation locking method for high-voltage switchgear in a substation according to the present invention includes 20kV main transformer switchgear, main transformer switchgear, capacitor switchgear, grounding transformer switchgear, busbar switch The front middle cabinet door, the front lower cabinet door, the trolley swing hole, the rear upper cabinet door, and the rear lower cabinet door are equipped with five-proof locks with anti-misoperation functions; The five anti-locks include the following anti-misoperation functions: (1) prevent mis-opening and closing the switch; (2) prevent the load from pulling and closing the isolation knife switch; ; (4) Prevent the switch (isolation switch) with grounding wire (grounding knife switch); (5) Prevent strayed into the electrified interval.

As shown in Fig. 5, a kind of anti-misoperation locking method of substation high-voltage switchgear microcomputer according to the present invention, it includes the front cabinet door, trolley shake hole, line grounding switch knife, rear upper cabinet door, rear cabinet door of 10kV line switch cabinet. The lower cabinet door is equipped with a five-proof lock with anti-misoperation function; the five-proof lock includes the following anti-misoperation functions: (1) prevent mis-opening and closing the switch by mistake; (2) prevent the isolation knife from being pulled and closed under load (3) Prevent the live switch from closing the grounding knife switch; (4) Prevent the grounded switch from closing the isolation switch; (5) Prevent mistaken entry into the charged interval.

As shown in Fig. 6, a microcomputer anti-misoperation locking method for a substation high-voltage switchgear according to the present invention includes a 10kV main transformer switchgear, a main transformer switchgear, a capacitor switchgear, a grounding transformer switchgear, and a bus breaker The front cabinet door, the trolley swing hole, the rear upper cabinet door, and the rear lower cabinet door of the cabinet, bus switch knife cabinet, and bus voltage transformer cabinet are equipped with five-proof locks with anti-misoperation functions; the five-proof locks include the following Anti-misoperation function: (1) Prevent mis-opening and closing of switches by mistake; (2) Prevent pulling and closing the isolation switch with load; 3) Prevent charged (closed) grounding wire (grounding switch); The grounding wire (grounding switch) closes the switch (isolation switch); (5) prevents the electrified interval from entering by mistake.

Example:

Due to the actual needs of production, according to the dispatching requirements, a 35kV standby 750 line in a substation is changed from operation to switch and line maintenance. Below will adopt the inventive method to install the five anti-locks additionally under the situation of switchgear, change the 35kV stand-by 750 line from operation into switch and line maintenance.

Figure 7 is a schematic diagram of a 35kV standby 750 switchgear equipped with five anti-locks, which includes the front cabinet door of the 35kV standby 750 switchgear, the swing hole of the trolley, the standby 750 line grounding knife, the rear upper cabinet door, and the rear lower The cabinet door is equipped with a five-proof lock with anti-misoperation function.

First of all, the operating personnel issue tickets according to the dispatching order, and the operation ticket for the 35kV standby 750 line to be changed from operation to line maintenance is as follows:

1) Pull the standby 750 line switch;

2) Check that the standby 750 line switch is in the off position;

3) Shake the standby 750 line switch trolley from the working position to the test position, and check;

4) Remove the pressure plate LPxx of the bus differential outlet of the 750-line switch to be used, and check;

5) Check that the standby 750 line switch is in cold standby;

6) Switch the 35kV bus differential protection switch QB to the bus differential back position;

7) Check that the BP-2B device interface on the 35kV bus differential protection screen displays differential exit and differential lock exit;

8) Use 4 shorting screws to short-circuit and ground the rheological side of the CT terminal 3SD of the Chengnan 648 line switch bus difference;

9) Remove the bus differential CT terminal 3SD of Chengnan Line 648 and connect it to the bus differential circuit with 4 connecting screws;

10) Check that the 35kV bus differential protection has no action and abnormal signals;

11) Switch the 35kV bus differential protection switch QB to the bus differential switch position;

12) Check that the BP-2B device interface on the 35kV bus differential protection screen displays differential input and differential locking input;

13) Remove the secondary plug-in of the standby 750 line switch trolley;

14) Pull the standby 750 line switch trolley from the test position to the outside of the cabinet and fix it, and check;

15) At the 750 line switch cabinet to be used, push the 35kV line electric inspection trolley from the cabinet to the test position, then shake it to the working position and fix it, and check;

16) Conduct a three-phase electric test at the static contact on the line side of the 35kV line electric test trolley. After checking that there is no voltage, shake the 35kV line electric test trolley from the working position to the test position, pull it out of the cabinet and fix it, and check;

17) Close the standby 750 line grounding switch and check;

18) Disconnect the standby 750-line switch to control the power supply air switch 3DK2;

After the prepared operation ticket has been verified and signed by the positive value and the value chief, and the dispatching order is issued, the switching operation of the 35kV standby 750 line can be changed from operation to switch and line maintenance.

Before the switchgear switching operation is executed, the operator will issue a graphical invoice in the background five-proof system according to the operation steps to verify the rationality of the operation steps. When performing on-site operations, after the graphical invoicing is completed, the computer key is transferred, and the operator executes the operation item by item according to the content of the operation ticket. When the operation content that violates the anti-misoperation locking logic is executed, the computer key realizes forced locking, and at the same time sends out an alarm and prompt information. Guide the operator to perform the operation correctly, so as to achieve the purpose of preventing misoperation. During remote operation, the operator sends a permission signal to the monitoring system through the host to unlock the remote control lock of the corresponding node. After the operation is completed, the host updates the device status to the current actual status.

According to the requirements of the high-voltage switchgear anti-misoperation specification, the 35kV standby 750 line is changed from operation to switch and line maintenance. The operation ticket that needs to pass the five-proof verification has the following 4 steps:

1) Pull the standby 750 line switch

2) Shake the standby 750 line switch trolley from the working position to the test position and fix it, and check

3) Pull the 750-wire switch trolley to be used from the test position to the outside of the cabinet and fix it, and check

4) Close the standby 750 line grounding knife, and check

Step 1) In the operation of step 1, after the verification of the five-proof system, it can help the operator to check the name of the equipment, and avoid the occurrence of vicious misoperation accidents such as the operator mistakenly distinguishing other interval switches in the background;

Step 2) Operation, by installing five anti-locks on the shaking hole of the 35kV standby 750 switchgear trolley, it can effectively prevent the staff from entering the electrified interval by mistake, and shake the switch trolley from the working position to the test position when the switch is closed. the occurrence of an accident;

Step 3) By installing a five-proof lock on the front door of the 35kV standby 750 switchgear, it can effectively prevent the staff from opening due to high work pressure and inattention when the switch is charged or the switch trolley is not in the test position. The occurrence of such accidents on the front cabinet door of the switch cabinet;

Step 4) By installing five anti-locks on the 35kV stand-by 750 switchgear circuit grounding switch, it can effectively avoid vicious misoperation accidents such as the staff being charged to close the grounding switch or the switch trolley closing the grounding switch when the switch trolley is not in the test position. happened.

In the above switching operations, by adding five-proof locks with anti-misoperation locking function to the front cabinet door, trolley shaker hole, and line grounding knife of the 35kV standby 750 switchgear, the probability of misoperation accidents can be greatly reduced, thereby ensuring Safety of operating personnel and grid equipment.

At the same time, by installing five anti-locks on the rear upper and lower rear cabinet doors of the 35kV standby 750 switchgear, it can effectively prevent maintenance personnel from opening the rear cabinet door without authorization when the 35kV standby 750 line is charged. The occurrence of electric shock accidents.

Other embodiments of the present invention can use 10kV switchgear and 20kV switchgear to replace 35kV standby 750 switchgear.

Claims (5)

1. A microcomputer anti-misoperation locking system for a high-voltage switchgear in a substation. The high-voltage switchgear in a substation includes a main transformer switchgear, a main transformer switch cabinet, a capacitor switchgear, a grounding transformer switchgear, a busbar switchgear, and a busbar switchgear. Switch cabinet, bus voltage transformer cabinet, line switch cabinet; it is characterized in that the high-voltage switch cabinet microcomputer anti-misoperation locking system includes: front cabinet door, rear cabinet door, trolley shaker hole, grounding knife Install five anti-locks with anti-misoperation locking function; in the main transformer switch cabinet, main transformer switch cabinet, capacitor switch cabinet, grounding substation switch cabinet, bus branch switch cabinet, bus switch switch cabinet, bus voltage transformer The front cabinet door, rear cabinet door and trolley shake hole are respectively equipped with five anti-locks with anti-misoperation locking function. 2. The microcomputer anti-misoperation locking system for high-voltage switchgears in substations according to claim 1, wherein the high-voltage switchgears include 10kV switchgears, 20kV switchgears, and 35kV switchgears: five of the high-voltage switchgears Anti-locking can be achieved: (1) prevent mis-opening and closing of the switch by mistake, (2) prevent pulling and closing the isolation switch with load, 3) prevent live connection (closing) of the grounding wire (grounding switch), (4) prevent Equipped with grounding wire (grounding knife switch) closing switch (isolation knife switch) and (5) "five-prevention" functions to prevent accidental entry into live compartments. 3. A microcomputer anti-misoperation locking method utilizing the substation high-voltage switchgear microcomputer anti-misoperation locking system according to claim 1 or 2, wherein the microcomputer anti-misoperation locking method comprises: First of all, the operator issues an invoice according to the dispatching order, and changes the standby line of the high-voltage switchgear from operation to an operation ticket for line maintenance, which specifically includes the following procedures: 1) Pull the switch of the standby line; 2) Check the disconnection position determined by the line switch to be used; 3) Shake the standby circuit switch trolley from the working position to the test position to fix and check; 4) Take off the bus differential outlet pressure plate LPxx of the line switch to be used, and check; 5) Check the standby line switch to determine the cold standby; 6) Switch the bus differential protection switch QB of the high-voltage switchgear to the bus differential back position; 7) Check that the BP-2B device interface on the bus differential protection screen of the high-voltage switchgear displays differential exit and differential lock exit; 8) Use 4 shorting screws to short-circuit and ground the 3SD rheological side of the substation 648 line switch bus difference CT terminal; 9) Remove the bus differential CT terminal 3SD of the 648 line switch in the substation and connect it to the bus differential circuit with 4 connecting screws; 10) Check that the bus differential protection of the high-voltage switchgear has no action and abnormal signals; 11) Switch the bus differential protection switch QB of the high-voltage switchgear to the bus differential switch position; 12) Check that the BP-2B device interface on the bus differential protection screen of the high-voltage switchgear displays differential input and differential locking input; 13) Remove the secondary plug-in of the standby circuit switch trolley; 14) Pull the circuit switch trolley to be used from the test position to the outside of the cabinet and fix it, and check; 15) At the switch cabinet of the line to be used, push the line electric inspection trolley from the outside of the cabinet to the test position, then shake it to the working position and fix it, and check; 16) Conduct a three-phase electric test at the static contact on the line side of the line electric test trolley. After confirming that there is no voltage, shake the line electric test trolley from the working position to the test position, pull it out of the cabinet and fix it, and check; 17) Close the grounding knife of the standby line and check; 18) Disconnect the air switch 3DK2 of the standby line switch to control the power supply; After the prepared operation ticket has been verified and signed by the positive value and the value chief, and the dispatching order is issued, the switching operation of the standby line of the high-voltage switchgear can be changed from operation to switch and line maintenance. 4. The microcomputer anti-misoperation locking method for high-voltage switchgear in a substation according to claim 3, characterized in that: before the switchgear switching operation is executed, the operator draws a ticket in the background five-proof system according to the operation steps, and verifies the operation steps the rationality of When performing on-site operations, after the graphical invoicing is completed, the computer key is transferred, and the operator executes the operation item by item according to the content of the operation ticket. When the operation content that violates the anti-misoperation locking logic is executed, the computer key realizes forced locking, and at the same time sends out an alarm and prompt information. Guide the operator to perform the operation correctly, so as to achieve the purpose of preventing misoperation; During remote operation, the operator sends a permission signal to the monitoring system through the host to unlock the remote control lock of the corresponding node. After the operation is completed, the host updates the device status to the current actual status. 5. The microcomputer anti-misoperation locking method for substation high-voltage switchgear according to claim 4, characterized in that: According to the requirements of the high-voltage switchgear anti-misoperation specification, the standby line of the high-voltage switchgear is changed from operation to switch and line maintenance. The operation ticket needs to pass the five-proof verification, which includes the following 4 steps: 1) Pull the switch of the standby line; 2) Shake the waiting line switch trolley from the working position to the test position, and check; 3) Pull the circuit switch trolley to be used from the test position to the outside of the cabinet to fix it, and check it; 4) Close the grounding knife of the standby line and check; Step 1) In the operation of step 1, after the verification of the five-proof system, it can help the operator to check the name of the equipment, and avoid the occurrence of vicious misoperation accidents such as the operator mistakenly distinguishing other interval switches in the background; Step 2) In the operation of step 2, by installing five anti-locks on the switch cabinet trolley shaking hole of the standby line of the high-voltage switch cabinet, it can effectively prevent the staff from entering the charged interval by mistake, and shake the switch trolley from the working position to the Occurrence of misoperation accidents at the test position; Step 3) In the operation of step 3, by installing five anti-locks on the front door of the switch cabinet of the standby line of the high-voltage switch cabinet, it can effectively prevent the staff from working under high pressure and inattention. The occurrence of such accidents when the front door of the switchgear is opened when the switchgear is in the position; Step 4) In the operation of step 4, by installing five anti-locks on the switch cabinet line grounding knife of the standby line of the high-voltage switch cabinet, it can effectively prevent the staff from closing the grounding knife switch when it is charged or the switch trolley is not in the test position. Occurrence of vicious misuse accidents.