CN102760594B - Transformer substation misoperation preventer and ground wire locking device thereof - Google Patents

Abstract

A substation anti-misoperation equipment with a ground wire locking device, mainly including: busbar, ground wire, busbar side knife switch (1), ground wire pile (2); among them, the disconnector contact box (3), and the busbar side The knife switch (1) is connected in one-to-one correspondence. After the isolating switch contact box (3) is connected in series, connect the parallel ground box (4) to control the opening and closing of the ground box (4); the ground box (4), the ground box The terminal box (4) is connected to all the lockers (5) to control the start of the lockers (5); the locker (5) corresponds to the busbar side knife switch (1) one by one, and controls the busbar side knife switch (1) to open Switching and closing; the present invention particularly provides a substation misoperation prevention device with a ground wire locking device, which overcomes the shortcomings of the existing misoperation prevention equipment, and can prevent substations from hanging ground wires and The occurrence of human misoperation accidents caused by the closing of the ground wire has great economic and social value.

Description

A substation anti-misoperation equipment and its ground wire locking device

technical field

The invention relates to the design of substation misoperation accidents, and in particular provides a substation misoperation prevention device and a ground wire locking device thereof.

Background technique

The human misoperation accidents in the substation of the State Grid Corporation of China during the power outage and transmission process are mainly due to the live wire hanging on the ground wire (ground knife), and the ground wire (ground knife) closing; at present, the existing anti-misoperation devices are difficult to be effective Control such misuse accidents. The existing microcomputer anti-misoperation locking device of the substation has played a very good role in the process of power transmission and stop operation, and has effectively guaranteed the safe production of power substation operation. Although the existing microcomputer anti-misoperation locking device has formulated comprehensive anti-mistake measures, due to the randomness of the ground wire, the microcomputer anti-misoperation locking device cannot effectively control the operation of the field isolating switch (knife switch) and the ground wire. Therefore, during the power outage operation process of the State Grid Corporation substation, accidents of hanging the ground wire and closing the switch with the ground wire still occur from time to time.

Contents of the invention

In particular, the present invention provides a substation misoperation prevention device with a ground wire locking device, which overcomes the shortcomings of the existing misoperation prevention equipment, and can prevent substations from being connected to the ground wire with electricity and closing with the ground wire during the power transmission operation process of the substation. The occurrence of human error operation accidents has great economic value and social value.

The substation anti-misoperation equipment with ground wire locking device according to the present invention mainly includes: busbar, ground wire, busbar side knife switch (1), and ground wire pile (2); among them,

The isolating switch contact box (3) is connected to the busbar side knife switch (1) in one-to-one correspondence. After the isolating switch contact box (3) is connected in series, it is connected to the parallel ground box (4) to control the opening and closing of the ground box (4). with;

The ground box (4), the ground box (4) is connected to all the lockers (5), and controls the start of the lockers (5);

The locker (5) is in one-to-one correspondence with the busbar side knife switch (1), and controls the opening and closing of the busbar side knife switch (1);

The busbar side switch (1) is opened, and the isolating switch contact box (3) connected to it is powered on, all the busbar side switch (1) is opened, and the isolating switch contact box (3) connected in series is powered on. At this time, all the parallel ground boxes (4) connected to the isolating switch contact box (3) are powered on, and the ground box (4) opens the door under the action of electromagnetic force; when the ground wire of one of the ground boxes (4) When the ground wire is installed on the pile (2), the power supply in the ground wire box (4) is turned on, and all the stoppers (5) connected to the ground wire box (4) are all activated under the action of electromagnetic force, and are in the locked position. The side knife switch (1) is prohibited from closing.

According to the anti-misoperation equipment of the substation with the ground wire locking device of the present invention, the isolating switch contact box (3) includes a movable contact fixed on the bottom of the transmission rod of the busbar side knife switch (1) and Knife switch (1) The contact box on the base of the transmission rod, the contact box is provided with a static contact; the static contact is two power contacts.

The anti-misoperation equipment of the substation with the ground wire locking device according to the present invention, wherein the ground wire box (4) mainly includes a box body (40), a ground wire pile (2), a spring movable contact piece (42), two A power contact (43), a ground stake (2), and a spring movable contact piece (42) are placed in the box body (40), and two power contacts (43) are placed on the inner bottom surface of the box body (40) and are higher than The inner bottom surface; the door of the box body (40) is arranged on the side of the box body (40), and the door can be opened and closed left and right.

According to the anti-misoperation equipment of the substation with the ground wire locking device of the present invention, the locker (5) includes a lock box body and a lock bolt, and the lock bolt is placed in the lock box body; the lock bolt pops out of the box body after being energized .

The anti-misoperation equipment of the substation with the ground wire locking device of the present invention, wherein, the switch I (6) is connected in series between the ground wire box (4) and the locker (5); the switch I (6) is normally Close the switch.

The ground wire locking device used for substation misoperation prevention equipment according to the present invention mainly includes a busbar side knife switch (1) and a ground wire pile (2); wherein,

The isolating switch contact box (3) is connected to the busbar side knife switch (1) in one-to-one correspondence. After the isolating switch contact box (3) is connected in series, it is connected to the parallel ground box (4) to control the opening and closing of the ground box (4). with;

The ground box (4), the ground box (4) is connected to all the lockers (5), and controls the start of the lockers (5);

The locker (5) is in one-to-one correspondence with the busbar side knife switch (1), and controls the opening and closing of the busbar side knife switch (1);

The busbar side switch (1) is opened, and the isolating switch contact box (3) connected to it is powered on, all the busbar side switch (1) is opened, and the isolating switch contact box (3) connected in series is powered on. At this time, all the ground wire boxes (4) connected in parallel with the isolating switch contact box (3) are powered on, and the ground wire boxes (4) open the door under the action of electromagnetic force; when the ground wire of one of the ground wire boxes (4) When the ground wire is installed on the pile (2), the power supply in the ground wire box (4) is turned on, and all the stoppers (5) connected to the ground wire box (4) are all activated under the action of electromagnetic force, and are in the locked position. The side knife switch (1) is prohibited from closing.

The invention is used for the ground wire locking device of substation misoperation prevention equipment, wherein, the isolating switch contact box (3) includes a movable contact fixed on the bottom of the transmission rod of the busbar side switch (1) and a movable contact fixed on the busbar side switch (1). Brake (1) The contact box on the base of the transmission rod, the contact box is provided with a static contact; the static contact is two power contacts.

The ground wire locking device for anti-misoperation equipment in substations according to the present invention, wherein the ground wire box (4) mainly includes a box body (40), a ground wire pile (2), a spring movable contact piece (42), The two power contacts (43), the ground stake (2), and the spring moving contact piece (42) are placed in the box body (40), and the two power contacts (43) are placed on the inner bottom surface of the box body (40) at a height on the inner bottom surface; the door of the box body (40) is arranged on the side of the box body (40), and the door can be opened and closed left and right.

The ground wire locking device for anti-misoperation equipment in substations according to the present invention, wherein the locker (5) includes a locking box and a locking pin, and the locking pin is placed in the locking box; the locking pin pops out after being energized. box body.

The ground wire locking device used for anti-misoperation equipment in substations according to the present invention, wherein, the switch I (6) is connected in series between the ground box (4) and the lock (5); the switch I (6) is Normally closed switch; normally switch Ⅰ (6) is closed and locked, only when the busbar side switch (1) is overhauled (doing the transmission test of the busbar side switch (1) and the three-phase phase test) can be unlocked and locked. Disconnect switch I (6).

The anti-misoperation equipment of the substation with the ground wire locking device according to the present invention mainly installs the ground wire box (4) on the ground wire pile, and installs the isolating switch contact box ( 3) and the latch (5), and then electrically connected to form a latch. When the busbar (line) needs to be installed with a ground wire, if any group of busbar side switch (1) on the busbar (line) is not disconnected, the ground box (4) is closed, and the ground box (4) The opening and closing of the busbar side switch (1) is controlled by the isolating switch contact box (3) at the lower part of the transmission rod. Only when the busbar side switch (1) is completely disconnected can the grounding box (4) be opened. It is allowed to hang the ground wire for electricity testing; when the ground wire is connected to the ground wire pile (2) in the ground wire box (4), the ground wire presses the spring moving contact piece (42) to contact the two power contacts (43), and the stopper The power of (5) is turned on, the lock (5) starts to lock, the lock pin in the lock (5) pops out, and is stuck at the lower end of the transmission rod of the busbar side knife switch (1), and the busbar side knife switch (1) prohibits close.

According to the anti-misoperation equipment of the substation with the ground wire locking device of the present invention, the relationship between the isolating switch contact box (3), the ground wire box (4), and the locker (5) is as follows: the busbar side switch ( 1) Pull it apart, the disconnector contact box (3) is powered on → the ground wire box (4) is opened under the action of magnetic force; when the ground wire is put into the ground wire pile (2) in the ground wire box (4), The power supply in the terminal box (4) is turned on → the lock (5) starts the lock under the action of electromagnetic force, the lock pin pops out of the lock box, and the busbar side knife switch (1) is prohibited from closing; the ground wire is connected from the ground wire pile (2) When removing it, the power supply in the ground box (4) is disconnected → the lock (5) loses the electromagnetic force to release the lock → the busbar side knife switch (1) can be closed, and after the busbar side knife switch (1) is closed, the isolation The power supply of the switch contact box (3) is disconnected, and the ground wire box (4) loses the electromagnetic force and closes; the power supply of the busbar side knife switch (1) and the ground wire locking device can be selected according to the actual situation on site. .

The anti-misoperation equipment of the substation with the ground wire locking device according to the present invention, wherein the disconnector contact box (3) mainly includes a moving contact (○) arranged on the bottom of the transmission rod of the knife switch (1) on the side of the busbar, arranged on the Static contact (— —) on the base of the busbar side knife switch transmission rod. The static contact is two power contacts. When the busbar side knife switch (1) is pulled open, the moving contact is connected to the static contact (—○— ), the power supply enters from one end to the other end, the wiring of all isolating switch contact boxes (3) is connected in series, and all ground boxes (4) are connected in parallel at the end of the power supply, when all the busbar side switch (1) is opened , the power supply is turned on, and all ground boxes (4) are opened.

The anti-misoperation equipment of the substation with the ground wire locking device according to the present invention, wherein the ground wire box (4) mainly includes a box body (40), a ground wire pile (2), a spring movable contact piece (42), two power supplies The contact (43), the ground stake (2), and the spring moving contact piece (42) are placed in the box body (40), and the two power contacts (43) are placed on the inner bottom surface of the box body (40) and are higher than the inner bottom surface ; The door of the box body (40) is set on the side of the box body (40), and the door is opened and closed left and right; each ground box (4) has an independent power supply inside, and each ground box (4) The internal power supply is connected in series with the blockers connected in parallel, no matter which group of ground wires is fixed on the ground pile, the spring moving contact piece is connected to the two power contacts, and the power supply will be turned on to start all the blockers.

Description of drawings

Figure 1 is a schematic diagram of the circuit connection between the contact box of the disconnector and the grounding box;

Figure 2 is a schematic diagram of the circuit connection behind the grounding wire of the grounding box and the blocker blocking the busbar side knife switch;

Figure 3 is a schematic diagram of the grounding box.

Detailed ways

The substation anti-misoperation equipment with the ground wire locking device described in this embodiment mainly includes: busbar, ground wire, busbar side knife switch (1), and ground wire pile (2); among them,

The isolating switch contact box (3) is connected to the busbar side knife switch (1) in one-to-one correspondence. After the isolating switch contact box (3) is connected in series, it is connected to the parallel ground box (4) to control the opening and closing of the ground box (4). with;

The ground box (4), the ground box (4) is connected to all the lockers (5), and controls the start of the lockers (5);

The locker (5) is in one-to-one correspondence with the busbar side knife switch (1), and controls the opening and closing of the busbar side knife switch (1);

The busbar side switch (1) is opened, and the isolating switch contact box (3) connected to it is powered on, all the busbar side switch (1) is opened, and the isolating switch contact box (3) connected in series is powered on. At this time, all the parallel ground boxes (4) connected to the isolating switch contact box (3) are powered on, and the ground box (4) opens the door under the action of electromagnetic force; when the ground wire of one of the ground boxes (4) When the ground wire is installed on the pile (2), the power supply in the ground wire box (4) is turned on, and all the stoppers (5) connected to the ground wire box (4) are all activated under the action of electromagnetic force, and are in the locked position. The side knife switch (1) is prohibited from closing.

The anti-misoperation equipment of the substation with the ground wire locking device described in this embodiment, wherein the disconnector contact box (3) includes a moving contact fixed on the bottom of the transmission rod of the busbar side knife switch (1) and The side knife switch (1) is a contact box on the base of the transmission rod, and a static contact is arranged in the contact box; the static contact is two power contacts.

The substation anti-misoperation equipment with the ground wire locking device described in this embodiment, wherein the ground wire box (4) mainly includes a box body (40), a ground wire pile (2), a spring movable contact piece (42), The two power contacts (43), the ground stake (2), and the spring moving contact piece (42) are placed in the box body (40), and the two power contacts (43) are placed on the inner bottom surface of the box body (40) at a height on the inner bottom surface; the door of the box body (40) is arranged on the side of the box body (40), and the door can be opened and closed left and right.

The anti-misoperation equipment of the substation with the ground wire locking device described in this embodiment, wherein the locker (5) includes a lock box body and a lock bolt, and the lock bolt is placed in the lock box body; the lock bolt pops out of the box after being energized body.

The anti-misoperation equipment of the substation with the ground wire locking device described in this embodiment, wherein, the switch I (6) is connected in series between the ground wire box (4) and the locker (5); the switch I (6) is Normally closed switch.

The ground wire locking device used for substation misoperation prevention equipment described in this embodiment mainly includes a busbar side knife switch (1) and a ground wire pile (2); among them,

The isolating switch contact box (3) is connected to the busbar side knife switch (1) in one-to-one correspondence. After the isolating switch contact box (3) is connected in series, it is connected to the parallel ground box (4) to control the opening and closing of the ground box (4). with;

The ground box (4), the ground box (4) is connected to all the lockers (5), and controls the start of the lockers (5);

The locker (5) is in one-to-one correspondence with the busbar side knife switch (1), and controls the opening and closing of the busbar side knife switch (1);

The busbar side switch (1) is opened, and the isolating switch contact box (3) connected to it is powered on, all the busbar side switch (1) is opened, and the isolating switch contact box (3) connected in series is powered on. At this time, all the ground wire boxes (4) connected in parallel with the isolating switch contact box (3) are powered on, and the ground wire boxes (4) open the door under the action of electromagnetic force; when the ground wire of one of the ground wire boxes (4) When the ground wire is installed on the pile (2), the power supply in the ground wire box (4) is turned on, and all the stoppers (5) connected to the ground wire box (4) are all activated under the action of electromagnetic force, and are in the locked position. The side knife switch (1) is prohibited from closing.

This embodiment is used for the ground wire locking device of the substation anti-misoperation equipment, wherein the isolating switch contact box (3) includes a moving contact fixed on the bottom of the transmission rod of the busbar side knife switch (1) and a movable contact fixed on the busbar side. Knife switch (1) The contact box on the base of the transmission rod, the contact box is provided with a static contact; the static contact is two power contacts.

The ground wire locking device for substation misuse prevention equipment described in this embodiment, wherein the ground wire box (4) mainly includes a box body (40), a ground wire pile (2), and a spring movable contact piece (42) , two power contacts (43), ground stakes (2), and spring moving contacts (42) are placed in the box body (40), and two power contacts (43) are placed on the inner bottom surface of the box body (40), and higher than the inner bottom surface; the door of the box body (40) is arranged on the side of the box body (40), and the door can be opened and closed left and right.

The ground wire locking device for anti-misoperation equipment in substations described in this embodiment, wherein the locker (5) includes a locking box and a locking pin, and the locking pin is placed in the locking box; the locking pin pops out after being energized Lock the box.

The ground wire locking device for substation misuse prevention equipment described in this embodiment, wherein, the switch I (6) is connected in series between the ground wire box (4) and the locker (5); the switch I (6) It is a normally closed switch; normally, the switch Ⅰ (6) is closed and locked, and it can only be unlocked when the busbar side switch (1) is overhauled (do the transmission test of the busbar side switch (1) and the three-phase phase test) And disconnect the switch I (6).

The substation anti-misoperation equipment with the ground wire locking device described in this embodiment mainly installs the ground wire box (4) on the ground wire pile, and installs the isolating switch contact box at the lower part of the drive rod of the busbar side knife switch (1) (3) and the latch (5), and then electrically connected to form a latch. When the busbar (line) needs to be installed with a ground wire, if any group of busbar side switch (1) on the busbar (line) is not disconnected, the ground box (4) is closed, and the ground box (4) The opening and closing of the busbar side switch (1) is controlled by the isolating switch contact box (3) at the lower part of the transmission rod. Only when the busbar side switch (1) is completely disconnected can the grounding box (4) be opened. It is allowed to hang the ground wire for electricity testing; when the ground wire is connected to the ground wire pile (2) in the ground wire box (4), the ground wire presses the spring moving contact piece (42) to contact the two power contacts (43), and the stopper The power of (5) is turned on, the lock (5) starts to lock, the lock pin in the lock (5) pops out, and is stuck at the lower end of the transmission rod of the busbar side knife switch (1), and the busbar side knife switch (1) prohibits close.

The anti-misoperation equipment of the substation with the ground wire locking device described in this embodiment, wherein, the relationship between the contact box (3), the ground wire box (4), and the locker (5) of the isolating switch: the busbar side knife switch (1) Pull it apart, the isolating switch contact box (3) is powered on → the ground wire box (4) is opened under the action of magnetism; when the ground wire is installed on the ground wire stake (2) in the ground wire box (4), The power supply in the ground box (4) is turned on → the lock (5) starts to lock under the action of electromagnetic force, the lock pin pops out of the lock box, and the busbar side knife switch (1) is prohibited from closing; the ground wire is connected from the ground wire pile (2 ) when removing it, the power in the ground box (4) is disconnected → the lock (5) loses the electromagnetic force to release the lock → the busbar side knife switch (1) can be closed, after the busbar side knife switch (1) is closed, The power supply of the isolating switch contact box (3) is disconnected, and the ground box (4) loses the electromagnetic force and closes; the power supply of the busbar side knife switch (1) and the ground wire locking device is selected according to the actual situation on site. Can.

The anti-misoperation equipment of the substation with the ground wire locking device described in this embodiment, wherein the disconnector contact box (3) mainly includes the moving contact (○) set on the bottom of the transmission rod of the busbar side knife switch (1), setting The static contact (— —) on the base of the busbar side knife switch transmission rod, the static contact is two power contacts, when the busbar side knife switch (1) is opened, the moving contact is connected to the static contact (—○ —), the power supply enters from one end to the other end, and the wiring of all isolating switch contact boxes (3) is connected in series. When ON, the power supply is turned on, and all ground boxes (4) are opened.

The substation anti-misoperation equipment with the ground wire locking device described in this embodiment, wherein the ground wire box (4) mainly includes a box body (40), a ground wire pile (2), a spring movable contact piece (42), two The power contact (43), the ground wire pile (2), and the spring moving contact (42) are placed in the box (40), and the two power contacts (43) are placed on the inner bottom of the box (40) and are higher than the inner Bottom; the door of the box body (40) is set on the side of the box body (40), and the door is opened and closed left and right; each ground box (4) has an independent power supply inside, and each ground box (4) The internal power supply of the system is connected in series with the lockers connected in parallel, no matter which group of ground wires is fixed on the ground pile, the spring moving contact piece is connected to the two power contacts, and the power supply will be turned on to start all the lockers.

Claims (8)

1. A substation anti-misoperation device with a ground wire locking device, mainly comprising: a busbar, a ground wire, a busbar side switch (1), and a ground wire pile (2); it is characterized in that: The isolating switch contact box (3) is connected to the busbar side knife switch (1) in one-to-one correspondence. After the isolating switch contact box (3) is connected in series, it is connected to the parallel ground box (4) to control the opening and closing of the ground box (4). with; Ground wire box (4), ground wire box (4) connects all lockers (5), controls the start of locker (5); Described ground wire box (4) mainly comprises box body (40), ground wire stake ( 2), the spring moving contact (42), two power contacts (43), the ground stake (2), the spring moving contact (42) are placed in the box body (40), and the two power contacts (43) are placed On the inner bottom surface of the box body (40) and higher than the inner bottom surface; the door of the box body (40) is arranged on the side of the box body (40), and the door is opened and closed left and right; The locker (5) is in one-to-one correspondence with the busbar side knife switch (1), and controls the opening and closing of the busbar side knife switch (1); The busbar side switch (1) is opened, and the isolating switch contact box (3) connected to it is powered on, all the busbar side knife switches (1) are opened, and the isolating switch contact boxes (3) connected in series are powered on. At this moment, the ground wire box (4) connected with the isolating switch contact box (3) is powered on, and the ground wire box (4) opens the door under the electromagnetic force; when the ground wire pile (2) of one of the ground wire boxes (4) ) when the ground wire is installed on the ground wire box (4), all the stoppers (5) connected to the ground wire box (4) are all activated under the action of electromagnetic force and are in the locked position. Gate (1) is prohibited from closing. 2. According to claim 1, the anti-misoperation equipment of substation with ground wire locking device is characterized in that: said isolating switch contact box (3) includes a movable contact fixed on the bottom of the transmission rod of the busbar side knife switch (1). Head and the contact box fixed on the base of the transmission rod of the busbar side knife switch (1), the contact box is provided with static contacts; the static contacts are two power contacts. 3. According to the anti-misoperation equipment of substation with ground wire locking device according to claim 1, it is characterized in that: said locker (5) comprises a locking box body and a locking bolt, and the locking bolt is placed in the locking box body; The box body is ejected after the deadbolt is energized. 4. According to the anti-misoperation equipment of substation with ground wire locking device according to claim 1, it is characterized in that: a switch I (6) is connected in series between the ground wire box (4) and the locker (5); the switch Ⅰ(6) is a normally closed switch. 5. A ground wire locking device for anti-misoperation equipment in a substation, mainly including a busbar side switch (1) and a ground wire pile (2); it is characterized in that: The isolating switch contact box (3) is connected to the busbar side knife switch (1) in one-to-one correspondence. After the isolating switch contact box (3) is connected in series, it is connected to the parallel ground box (4) to control the opening and closing of the ground box (4). with; Ground wire box (4), ground wire box (4) connects all lockers (5), controls the start of locker (5); Described ground wire box (4) mainly comprises box body (40), ground wire stake ( 2), the spring moving contact (42), two power contacts (43), the ground stake (2), the spring moving contact (42) are placed in the box body (40), and the two power contacts (43) are placed On the inner bottom surface of the box body (40) and higher than the inner bottom surface; the door of the box body (40) is arranged on the side of the box body (40), and the door is opened and closed left and right; The locker (5) is in one-to-one correspondence with the busbar side knife switch (1), and controls the opening and closing of the busbar side knife switch (1); The busbar side switch (1) is opened, and the isolating switch contact box (3) connected to it is powered on, all the busbar side knife switches (1) are opened, and the isolating switch contact boxes (3) connected in series are powered on. At this moment, the ground wire box (4) connected with the isolating switch contact box (3) is powered on, and the ground wire box (4) opens the door under the electromagnetic force; when the ground wire pile (2) of one of the ground wire boxes (4) ) when the ground wire is installed, the power supply in the ground wire box (4) is turned on, and all the stoppers (5) connected to the ground wire box (4) are all activated under the action of electromagnetic force, and are in the locked position, and the busbar side knife switch (1) Closing is prohibited. 6. The ground wire locking device for substation misuse prevention equipment according to claim 5, characterized in that: the isolating switch contact box (3) includes a dynamic switch fixed on the bottom of the transmission rod of the busbar side knife switch (1). Contacts and a contact box fixed on the base of the transmission rod of the busbar side knife switch (1), the contact box is provided with static contacts; the static contacts are two power contacts. 7. According to the ground wire locking device for substation misoperation prevention equipment according to claim 5, it is characterized in that: said locker (5) includes a locking box body and a locking bolt, and the locking bolt is placed in the locking box body; The box body is ejected after the deadbolt is energized. 8. The ground wire locking device for substation misuse prevention equipment according to claim 5, characterized in that: the series switch I (6) between the ground box (4) and the locker (5); Switch I (6) is a normally closed switch.