Power transmission system and grounding device with locking function

Abstract

The application discloses a power transmission system and a grounding device with a locking function, and the device comprises a grounding pile, a locking plate and a locking structure. The first end of the grounding pile is connected with a ground net, and the second end is provided with a penetrating pin hole penetrating through the side surface of the pile body, and the hole diameter of the penetrating pin hole is greater than the cross section diameter of the end penetrating pin of the grounding wire. The guide device in the locking structure is movably embedded between the locking plate, and the guide device limits the locking plate to move only in the first direction, wherein the first direction is perpendicular to the penetrating direction of the penetrating pin hole; the electric lock body in the locking structure is used for locking or releasing the locking plate according to the control signal; the position of the locked locking plate is fixed and closely attached to the penetrating pin hole, so that the end penetrating pin of the grounding wire cannot penetrate through the penetrating pin hole; the released locking plate can move away along the first direction and avoid the penetrating pin hole, so that the end penetrating pin of the grounding wire can penetrate through the penetrating pin hole, the physical locking of the grounding pile is realized, and the misoperation caused by the maintenance personnel unlocking the five-protection lock or skipping the microcomputer five-protection is avoided.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of power system, and particularly relates to a power transmission system and a grounding device with locking function thereof. BACKGROUND

[0002] Grounding is one of the technical measures to ensure the safety of personnel when working on electrical equipment and its related places, and its implementation includes installing grounding wires and closing grounding switches. When there is no grounding switch configured, the grounding switch is abnormal, or the isolation switch corresponding to the grounding switch is abnormal, the line grounding can only be achieved by installing the grounding wire.

[0003] In the prior art, the grounding wire is usually connected with a fixed grounding stake through the grounding end of the grounding wire to realize the connection between the grounding wire and the ground net. The grounding wire installation operation is the key management object of the anti-misoperation, and the five-prevention lock is usually hung on the grounding stake to realize the anti-misoperation, and the opening condition of the five-prevention lock of the grounding stake is set through the microcomputer five-prevention, and the electrical locking condition is lacked. When the operator illegally unlocks the five-prevention lock or skips the microcomputer five-prevention to perform the grounding operation, the misoperation is prone to occur. SUMMARY

[0004] The present application provides a power transmission system and a grounding device with locking function thereof to avoid the misoperation caused by the illegal unlocking of the five-prevention lock by the maintenance personnel or the skipping of the microcomputer five-prevention.

[0005] According to an aspect of the present application, a grounding device with locking function is provided, which is used in cooperation with a grounding wire.

[0006] The grounding device with locking function comprises a grounding stake, a locking plate and a locking structure.

[0007] The first end of the grounding stake is connected with a ground net, and the second end of the grounding stake is provided with a through pin hole penetrating the side surface of the stake body, wherein the hole diameter of the through pin hole is greater than the cross-sectional diameter of the end pin of the grounding wire.

[0008] The locking structure comprises a guide device and an electric lock body, the guide device is movably embedded between the locking plate, and the guide device is used to limit the movement of the locking plate in only a first direction, wherein the first direction is perpendicular to the penetration direction of the through pin hole; the electric lock body is used to lock or release the locking plate according to a control signal; the position of the locked locking plate is fixed and closely attached to the through pin hole, so that the end pin of the grounding wire cannot pass through the through pin hole; and the released locking plate can move away along the first direction and avoid the through pin hole, so that the end pin of the grounding wire can pass through the through pin hole.

[0009] Optionally, the grounding device with locking function is used in cooperation with the grounding wire and the five-prevention lock.

[0010] The locking plate is provided with a five-prevention padlock hole penetrating the front and back of the plate body, the five-prevention padlock hole has a hole diameter greater than the cross-sectional diameter of the lock rod of the five-prevention padlock and less than the cross-sectional diameter of the end penetrating pin; wherein the position of the locking plate after being locked is fixed, and the five-prevention padlock hole on the locking plate is opposite and close to the penetrating pin hole, so that the five-prevention padlock can pass through the five-prevention padlock hole and the penetrating pin hole in turn.

[0011] Optionally, the electric lock body comprises a telescopic lock rod and a control assembly, the control assembly is connected with the telescopic lock rod, and the control assembly is used for switching the extension and retraction of the telescopic lock rod according to the control signal;

[0012] The locking plate is provided with a locking hole matching the cross-sectional shape of the telescopic lock rod, and the drilling direction of the locking hole is perpendicular to the first direction;

[0013] In the case that the locking plate is locked, the control assembly controls the telescopic lock rod to extend and be embedded in the locking hole, so that the position of the locking plate is fixed and close to the penetrating pin hole, and the end penetrating pin of the grounding wire cannot pass through the penetrating pin hole;

[0014] In the case that the locking plate is released, the control assembly controls the telescopic lock rod to retract from the locking hole, so that the locking plate can move along the first direction and avoid the penetrating pin hole.

[0015] Optionally, the control assembly comprises an electric motor and a transmission structure; the transmission structure is connected with the telescopic lock rod, and the transmission structure is used for driving the telescopic lock rod to make corresponding actions according to the power provided by the electric motor.

[0016] Optionally, the control assembly comprises an electromagnetic coil and an armature;

[0017] The armature is connected with the root of the telescopic lock rod, and the armature is used for driving the telescopic lock rod to make corresponding actions according to the power provided by the electromagnetic coil.

[0018] Optionally, the guide device comprises a guide plate, the guide plate is provided with a guide hole penetrating the front and back of the guide plate and penetrating in the first direction; the hole cross section of the guide hole is matched with the cross section of the locking plate, so that the locking plate can be nested in the guide hole and can only move along the penetrating direction of the guide hole.

[0019] Optionally, the locking plate includes a main plate and an end plate, and the main plate is movably engaged with the guide device; the extension direction of the main plate is the first direction and is perpendicular to the extension direction of the end plate, the first end of the main plate is used to fit the pin hole, and the second end of the main plate is fixedly connected to the end plate; the end plate is used to overlap the guide plate or the electric lock body when the main plate moves to a preset position along the first direction, so as to limit the range in which the locking plate can move along the first direction.

[0020] Optionally, the grounding device with a locking function further comprises an elastic element, one end of the elastic element being connected to the front surface of the end plate, and the other end being connected to the front surface of the guide plate, wherein the front surface of the end plate is the side connected to the main board, and the front surface of the guide plate is the side opposite to the front surface of the end plate;

[0021] When the elastic element is in a natural state, the locking plate is in a preset position, so that the end pin of the grounding wire cannot pass through the pin hole, wherein the preset position is a position where the locking plate can completely block the pin hole during movement along the first direction; when the elastic element is in a maximum stretched state, the locking plate completely avoids the pin hole, so that the end pin of the grounding wire can pass through the pin hole.

[0022] According to another aspect of the present invention, there is provided a power transmission system, comprising: at least one busbar, and a transformer switch, a transmission branch switch, a control circuit, and any grounding device with a locking function as described in the preceding aspect, corresponding to the busbar;

[0023] The transformer switch is arranged between the corresponding busbar and the voltage transformer;

[0024] The transmission branch circuit breaker is arranged between the corresponding busbar and the transmission branch;

[0025] The locking structure and control branch in the grounding device with locking function are connected in series between the positive and negative electrodes of the grounding control power supply to form the control loop; the locking structure is used to release or lock the locking plate according to the presence or absence of a control signal on the corresponding control loop;

[0026] Among them, the control branch includes a first branch connected in series with a first contact and a second contact, the first contact is opposite to the on-off state of the corresponding transformer switch, and the second contact is opposite to the on-off state of the transmission branch switch.

[0027] Optionally, the power transmission system further comprises at least one grounding switch corresponding to the busbar;

[0028] The control branch further comprises a second branch in parallel with the first branch, the second branch comprising at least one third junction in parallel, the third junction corresponding to the grounding knife switch one by one and having the same on-off state as the corresponding grounding knife switch.

[0029] The power transmission system and the grounding device with locking function provided by the application include a grounding stake, a locking plate and a locking structure. The first end of the grounding stake is connected with a ground net, and the second end of the grounding stake is provided with a through pin hole penetrating the side surface of the stake body, wherein the hole diameter of the through pin hole is greater than the cross-sectional diameter of the end pin of the grounding wire; the guide device in the locking structure is movably fitted between the locking plate, and the guide device is used for limiting the locking plate to move only in a first direction, wherein the first direction is perpendicular to the penetration direction of the through pin hole; the electric lock body in the locking structure is used for locking or releasing the locking plate according to a control signal; the position of the locked locking plate is fixed and close to the through pin hole, so that the end pin of the grounding wire cannot pass through the through pin hole; and the released locking plate can move away from the through pin hole in the first direction and avoid the through pin hole, so that the end pin of the grounding wire can pass through the through pin hole, realizing physical locking of the grounding stake and avoiding misoperation caused by the violation of the maintenance personnel to unlock the five-protection lock or skip the microcomputer five-protection.

[0030] It should be understood that the content described in this part is not intended to identify key or important features of the embodiments of the application, nor is it used to limit the scope of the application. Other features of the application will become apparent from the following description. BRIEF DESCRIPTION OF DRAWINGS

[0031] In order to more clearly illustrate the technical solutions in the embodiments of the application, the following will briefly introduce the drawings needed to be used in the embodiment description. Obviously, the drawings in the following description are only some embodiments of the application, and other drawings can also be obtained by those skilled in the art without creative labor.

[0032] Figure 1 A composition schematic diagram of the grounding device with locking function provided by the embodiment of the application;

[0033] Figure 2 A partial structure schematic diagram of the grounding wire provided by the embodiment of the application;

[0034] Figure 3 A structure schematic diagram of another grounding device with locking function provided by the embodiment of the application;

[0035] Figure 4 A structure schematic diagram of the five-protection padlock provided by the embodiment of the application;

[0036] Figure 5Structure diagram of the grounding device with locking function provided by the embodiment of the present application;

[0037] Figure 6 Structure diagram of the electric lock body and the corresponding locking hole provided by the embodiment of the present application;

[0038] Figure 7 Structure diagram of the electric lock body and the corresponding locking hole provided by the embodiment of the present application;

[0039] Figure 8 Structure diagram of the grounding device with locking function provided by the embodiment of the present application;

[0040] Figure 9 Structure diagram of the guiding plate provided by the embodiment of the present application;

[0041] Figure 10 Structure diagram of the grounding device with locking function provided by the embodiment of the present application;

[0042] Figure 11 Structure diagram of the locking plate provided by the embodiment of the present application;

[0043] Figure 12 Structure diagram of the locking plate provided by the embodiment of the present application;

[0044] Figure 13 Circuit diagram of the power transmission system provided by the embodiment of the present application;

[0045] Figure 14 Circuit diagram of the control loop provided by the embodiment of the present application;

[0046] Figure 15 Circuit diagram of the power transmission system provided by the embodiment of the present application;

[0047] Figure 16 Circuit diagram of the control loop provided by the embodiment of the present application. DETAILED DESCRIPTION

[0048] In order to enable persons skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, but not all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by persons skilled in the art without creative work should belong to the protection scope of the present application.

[0049] It is to be understood that the terms "first", "second", and the like used in the description and the claims of the present application as well as the above-described drawings are used to distinguish similar objects and are not necessarily used to describe a particular sequential or chronological order. It is to be understood that the use of the terms so used herein is interchangeable under appropriate circumstances such that the embodiments of the application described herein are, for example, capable of efficient implementation in other than the order illustrated or other than the order described herein. Moreover, the terms "comprise", "have" and any variations thereof are intended to cover a non-exclusive inclusion, for example, a process, method, system, product or apparatus that comprises a list of steps or units is not necessarily limited to those steps or units that are clearly listed, but can include other steps or units not clearly listed or inherent to such processes, methods, products or apparatus.

[0050] To solve the problems mentioned in the background, the present application provides a grounding device with locking function, which is used with a grounding wire. Figure 1 A grounding device with locking function provided by the embodiment of the present application, Figure 2 A partial structure diagram of a grounding wire provided by the embodiment of the present application, for clear illustration, Figure 1 The part of the grounding stake blocked by the locking plate is shown by a dashed line on the locking plate, in combination with Figure 1 And Figure 2 The grounding device with locking function 100 comprises a grounding stake 101, a locking plate 102 and a locking structure 103. The first end of the grounding stake 101 is connected with a ground net, and the second end of the grounding stake 101 is provided with a through pin hole 104 penetrating the side surface of the stake body, wherein the hole diameter of the through pin hole 104 is greater than the cross-sectional diameter of the end pin 201 of the grounding wire 200. The locking structure 103 comprises a guide device 105 and an electric lock body 106. The guide device 105 is movably fitted between the locking plate 102, and the guide device 105 is used to limit the movement of the locking plate 102 in only a first direction, wherein the first direction is perpendicular to the penetration direction of the through pin hole 104. The electric lock body 106 is used to lock or release the locking plate 102 according to a control signal. After being locked, the position of the locking plate 102 is fixed and tightly abuts the through pin hole 104, so that the end pin 201 of the grounding wire 200 cannot penetrate the through pin hole 104. After being released, the locking plate 102 can move away from the through pin hole 104 in the first direction and avoid the through pin hole 104, so that the end pin 201 of the grounding wire 200 can penetrate the through pin hole 104.

[0051] Specifically, the pinning end of the grounding wire 200 ( Figure 2The grounding wire 200's landing end (not shown) is used to connect to the conductor end and be fixed to the equipment to achieve grounding of the equipment. The grounding end of the grounding wire 200 is used to connect to the grounding post 101. The grounding end of the grounding wire 200 is provided with a wire ear 202, a base 203, an end pin 201, a butterfly nut 204 and a gasket 205. One end of the wire ear 202 is connected to the grounding post 101, and the other end is fastened to the grounding wire 200. One end of the base 203 is connected to the wire ear 202, and one end is connected to the end pin 201. The end pin 201 adopts a bolt structure and cooperates with the butterfly nut 204. After the end pin 201 passes through the pin hole 104, the butterfly nut 204 is tightened on the end pin 201 to fix the grounding wire 200. Two washers 205 are provided at the grounding end of each grounding wire 200 . During installation, the two washers 205 are placed on the front and back sides of the grounding post 101 to increase the contact area between the grounding wire 200 and the grounding post 101 .

[0052] Grounding stake 101 refers to a conductive stake in a grounding device used to connect to grounding wire 200. One end of the stake is connected to the ground wire, and the other end can be connected and fixed to grounding wire 200. For example, grounding stake 101 can be made of metal, for example, a strip of metal plate. The first end of the strip of metal plate can be fixedly mounted inside a receiving wall 107, below ground, or on an electrical box, connecting to the ground grid inside the wall, underground, or inside the electrical box. The second end of the strip of metal plate extends outside the wall, above ground, or outside the electrical box, facilitating connection to grounding wire 200. Pin hole 104 refers to a through-hole in grounding stake 101 for connecting to grounding wire 200. It is located at the second end of grounding stake 101 and extends through the side of the second end. When connecting grounding wire 200, maintenance personnel can insert the end pin 201 of grounding wire 200 from one side of grounding stake 101 through pin hole 104 to the other side and secure it with a nut or other fixing part to achieve the connection between grounding wire 200 and grounding stake 101.

[0053] The locking plate 102 is a rigid barrier for the pin hole 104 and can be locked or released. For example, the locking plate 102 can be a strip-shaped plate. In the locked state, the locking plate 102 is fixed in a preset position. In this position, at least a portion of the locking plate 102 abuts against one side of the grounding post 101, thereby abutting against the pin hole 104 on that side. This prevents the pin of the grounding wire 200 from passing through the pin hole 104, thus preventing maintenance personnel from illegally connecting the grounding wire 200. In the released state, the locking plate 102 can move in a first direction, avoiding the pin hole 104, allowing the pin of the grounding wire 200 to pass through the pin hole 104 and complete connection with the grounding post 101. The first direction is perpendicular to the direction of penetration of the pin hole 104.

[0054] The locking structure 103 corresponds to the locking plate 102, and can control the locking or releasing of the position of the locking plate 102. The locking structure 103 is fixedly arranged relative to the grounding stake 101. For example, the locking structure 103 can be fixedly connected to a wall, ground or device to which the first end of the grounding stake 101 is connected via a support (for example, the locking structure 103 is fixedly connected to the wall to which the first end of the grounding stake 101 is connected via a support, as shown in the middle of FIG. 1) Figure 1 The guiding device 105 in the locking structure 103 is a moving direction limiting device that is movably combined with the locking plate 102, so that the locking plate 102 can only move along the guiding direction of the guiding device 105, and the guiding direction of the guiding device 105 is the first direction. For example, the guiding device 105 can include at least one of a guiding tube with a penetrating direction being the first direction, a guiding hole with a penetrating direction being the first direction, or a guide rail with a guiding direction being the first direction. In the case where the guiding device 105 includes the guiding hole or the guiding tube, the locking plate 102 can be sleeved in the guiding tube or the guiding hole, so that the locking plate 102 can only move along the penetrating direction of the guiding tube or the penetrating direction of the guiding hole (i.e., the first direction). In the case where the guiding device 105 is the guide rail, the locking plate 102 can be movably combined in the guide rail, so that the locking plate 102 can only move along the guiding direction of the guide rail (i.e., the first direction). The electric lock body 106 in the locking structure 103 is a position limiting device of the locking plate 102, and can release or lock the locking plate 102 at a preset position according to a control signal, wherein the preset position is a position at which the locking plate 102 can completely block the penetrating hole 104 on the grounding stake 101 during the movement of the locking plate 102 along the first direction, and the control signal can be a signal provided by a control loop of the grounding device. For example, the electric lock body 106 can use any limiting tool such as an electric clamp, a telescopic limiting protrusion, a telescopic hook or a telescopic lock rod to perform position limiting operations such as clamping, clamping, hooking or inserting on a corresponding position limiting recess of the locking plate 102.

[0055] The grounding device with locking function provided by the embodiment comprises a grounding stake, a locking plate and a locking structure. The first end of the grounding stake is connected with a ground net, and the second end of the grounding stake is provided with a through pin hole penetrating the side surface of the stake body, wherein the hole diameter of the through pin hole is greater than the cross-sectional diameter of the end pin of the grounding wire; the guide device in the locking structure is movably fitted between the locking plate, and the guide device is used for limiting the locking plate to move only in a first direction, wherein the first direction is perpendicular to the penetration direction of the through pin hole; the electric lock body in the locking structure is used for locking or releasing the locking plate according to a control signal; the position of the locked locking plate is fixed and closely abuts the through pin hole, so that the end pin of the grounding wire cannot pass through the through pin hole; and the released locking plate can move away from the through pin hole in the first direction and avoid the through pin hole, so that the end pin of the grounding wire can pass through the through pin hole, the physical locking of the grounding stake is realized, and the misoperation caused by the maintenance personnel unlocking the five-protection lock or skipping the microcomputer five-protection is avoided.

[0056] Optionally, Figure 3 The structure schematic diagram of another grounding device with locking function provided by the embodiment of the application is shown in the figure, Figure 4 The structure schematic diagram of the five-protection padlock provided by the embodiment of the application is shown in the figure, wherein, in order to clearly show, Figure 3 The part of the grounding stake blocked by the locking plate is shown by a dashed line on the locking plate, Figure 3 The grounding device with locking function shown in the figure is used in cooperation with the five-protection padlock in addition to being used in cooperation with the grounding wire, on the basis of the foregoing embodiment, in combination with Figure 3 and Figure 4 The locking plate 102 is provided with a five-protection padlock hole 301 penetrating the front and back of the plate body, the hole diameter of the five-protection padlock hole 301 is greater than the cross-sectional diameter of the lock rod of the five-protection padlock and is less than the cross-sectional diameter of the end pin; wherein the position of the locked locking plate 102 is fixed, and the five-protection padlock hole 301 thereon is opposite and closely abuts the through pin hole 104, so that the lock rod 401 of the five-protection padlock 400 can pass through the five-protection padlock hole 301 and the through pin hole 104 in sequence.

[0057] Specifically, the five-protection padlock 400 comprises a lock body 402, a lock rod 401 and a key hole 403, the lock rod 401 can pass through the five-protection padlock hole 301 and the through pin hole 104 on the locking plate 102, and the grounding stake 101 is locked, even if the electric lock body 106 receives a control signal after the grounding stake 101 is locked, the maintenance personnel cannot pull the locking plate 102 to remove the shielding and locking of the locking plate 102 to the through pin hole 104. The key operating rod corresponding to the key of the five-protection padlock 400 can be inserted into the key hole 403, and in the case that the preset unlocking condition is met, the locking of the lock body 402 to the lock rod 401 is released, and the grounding stake 101 is unlocked.

[0058] The five-prevention padlock hole 301 refers to a through hole on the locking plate 102, which is used for hanging the five-prevention padlock 400. It should be particularly pointed out that in this embodiment, the preset position of the locking plate 102 can be further limited to a position in which the five-prevention padlock hole 301 is opposite to and in close contact with the through pin hole 104. In the locked state of the locking plate 102, the locking plate 102 is located at the preset position, so that the five-prevention padlock hole 301 is opposite to and in close contact with the through pin hole 104 on the grounding stake 101. Since the diameter of the five-prevention padlock hole 301 is also smaller than the cross-sectional diameter of the through pin on the grounding wire, even if the locking plate 102 and the grounding stake 101 are not locked by using the five-prevention padlock, the maintenance personnel cannot connect the grounding wire to the grounding stake 101 in the locked state of the locking plate 102, which further reduces the misoperation of the maintenance personnel and improves the safety of the grounding operation.

[0059] Optionally, Figure 5 A structure diagram of another grounding device with a locking function provided by an embodiment of the present application is shown in the figure, Figure 6 A structure diagram of an electric lock body and a corresponding locking hole provided by an embodiment of the present application is shown in the figure, Figure 7 A structure diagram of another electric lock body and a corresponding locking hole provided by an embodiment of the present application is shown in the figure, wherein, Figure 6 and Figure 7 are both cross-sectional schematic diagrams of the electric lock body and the locking plate being cut by a first plane; Figure 5 The position of the armature and the telescopic lock rod connected thereto in the released state is shown by a red solid line, and the position of the armature and the telescopic lock rod connected thereto in the locked state is shown by a blue dashed line. On the basis of the foregoing embodiment, referring to Figure 5 The electric lock body 106 includes a telescopic lock rod 501 and a control assembly 502. The control assembly 502 is connected with the telescopic lock rod 501, and is used for switching the extension and retraction of the telescopic lock rod 501 according to the control signal. The locking plate 102 is provided with a locking hole 503 that is in the shape of the cross section of the telescopic lock rod 501. The drilling direction of the locking hole 503 is perpendicular to the first direction. In the locked state of the locking plate 102, the control assembly 502 controls the telescopic lock rod 501 to extend and be embedded in the locking hole 503, so that the position of the locking plate 102 is fixed and in close contact with the through pin hole 104, and the end pin of the grounding wire cannot pass through the through pin hole 104. In the released state of the locking plate 102, the control assembly 502 controls the telescopic lock rod 501 to retract from the locking hole 503, so that the locking plate 102 can move along the first direction and avoid the through pin hole 104.

[0060] Specifically, the telescopic locking rod 501 is a limiting rod corresponding to the locking hole 503 on the locking plate 102, and its cross section is adapted to the hole cross section of the locking hole 503, that is, the cross-sectional shape of the telescopic locking rod 501 is the same as the hole cross section shape of the locking hole 503 and the cross-sectional area of ​​the telescopic locking rod 501 is slightly smaller than the hole cross section area of ​​the locking hole 503. The telescopic locking rod 501 can pop out or retract along the drilling direction of the locking hole 503, thereby extending into the locking hole 503 or retracting from the locking hole 503 to achieve locking and unlocking of the locking plate 102. The control component 502 can be arranged in the lock housing, and can control the telescopic state of the telescopic locking rod 501 according to the control signal. For example, in combination Figure 5 and Figure 6 The control component 502 may include an electromagnetic coil 601 and an armature 602; the armature 602 is connected to the root of the telescopic lock rod 501, and the armature 602 is used to drive the telescopic lock rod 501 to perform corresponding actions according to the power provided by the electromagnetic coil 601. The electromagnetic coil 601 adjusts its working state according to the control signal. Figure 5 and Figure 7 The control assembly 502 may also include a motor 701 and a transmission structure 702; the transmission structure 702 is connected to the telescopic lock rod 501 and is used to drive the telescopic lock rod 501 to perform corresponding actions based on the power provided by the motor 701. The motor 701 adjusts its operating state according to the control signal.

[0061] Continue to refer to Figure 5 The locking hole 503 can pass through both sides of the locking plate 102 ( Figure 5 (The example shows a through hole.) Alternatively, a non-through hole may be formed by drilling a single hole in the locking plate 102 directly opposite the telescopic locking rod 501. The locking hole 503 in the locking plate 102 is positioned so that when locked, the locking plate 102 is in a predetermined position, where at least a portion of the locking plate 102 is in close contact with the pin hole 104, preventing the end pin of the grounding wire from passing through the pin hole 104.

[0062] The electric lock body of the grounding device with locking function provided by the embodiment comprises a telescopic lock rod and a control assembly connected with the telescopic lock rod, and the control assembly is used to switch the extension and retraction of the telescopic lock rod according to the control signal. The locking plate is provided with a locking hole matching the cross-sectional shape of the telescopic lock rod, and the drilling direction of the locking hole is perpendicular to the first direction. When the locking plate is locked, the control assembly controls the telescopic lock rod to extend and be embedded in the locking hole, so that the position of the locking plate is fixed and closely attached to the piercing hole, and the end of the grounding wire cannot pass through the piercing hole. When the locking plate is released, the control assembly controls the telescopic lock rod to retract from the locking hole, so that the locking plate can move along the first direction and avoid the piercing hole, realizing reliable locking and releasing of the locking plate and further improving the locking reliability of the grounding device.

[0063] Optionally, Figure 8 The structure diagram of another grounding device with locking function provided by the embodiment of the application is shown, Figure 9 The structure diagram of a guide plate provided by the embodiment of the application is shown, Figure 9 It is shown that Figure 8 The guide plate in the device, on the basis of the foregoing embodiment, combines Figure 8 And Figure 9 The guide device comprises a guide plate 801 provided with a guide hole 802 penetrating through the front and back surfaces of the guide plate 801 and penetrating in the first direction; the hole cross section of the guide hole 802 is matched with the cross section of the locking plate 102, so that the locking plate 102 can be nested in the guide hole 802 and can only move along the penetrating direction of the guide hole 802 (that is, the first direction).

[0064] Specifically, the guide plate 801 is a guide device for limiting the movable direction of the locking plate 102, and the extension direction of the front surface of the plate material can be perpendicular to the first direction. The guide plate 801 is fixedly arranged relative to the electric lock body and provided with the guide hole 802 penetrating through the front and back surfaces of the guide plate 801 and penetrating in the first direction. The hole cross section is the hole boundary cross section obtained by cutting the hole with a plane perpendicular to the penetrating direction, the hole cross section shape of the guide hole 802 is the same as the cross section shape of the locking plate 102, and the hole cross section area of the guide hole 802 is slightly larger than the cross section area of at least part of the locking plate 102, so that at least part of the locking plate 102 can penetrate through the guide hole 802 and can only move along the penetrating direction of the guide hole 802 (that is, the first direction). The structure of the guide plate 801 is simple and the guiding effect is stable, which reduces the manufacturing cost of the device, provides stable directional guidance for the locking plate 102, and improves the reliability of the grounding device.

[0065] Optionally, Figure 10 Structure diagram of another grounding device with locking function provided by an embodiment of the present application, Figure 11 Structure diagram of a locking plate provided by an embodiment of the present application, Figure 12 Structure diagram of another locking plate provided by an embodiment of the present application, wherein, Figure 11 It is shown that Figure 10 The locking plate in the device shown, Figure 12 It is shown that Figure 10 Another locking plate in addition to the locking plate in the device shown, on the basis of the foregoing embodiments, in combination with Figure 10 , Figure 11 and Figure 12 The locking plate 102 comprises a main plate 1002 and an end plate 1001, and the main plate 1002 is movably fitted between the guide device. The extension direction of the main plate 1002 is the first direction and is perpendicular to the extension direction of the end plate 1001, the first end of the main plate 1002 is used to fit the pin hole 104, and the second end of the main plate 1002 is fixedly connected with the end plate 1001; the end plate 1001 is used to be lapped on the guide plate 801 or the electric lock body when the main plate 1002 moves to the preset position along the first direction, so as to limit the interval in which the locking plate 102 can move along the first direction.

[0066] Specifically, the main plate 1002 and the end plate 1001 can both be strip-shaped plates, that is, quadrangular prisms. The extension direction of the main plate 1002 is the first direction, and the cross section thereof is adapted to the hole cross section of the guide hole on the guide plate 801. The extension direction of the end plate 1001 is perpendicular to the extension direction of the main plate 1002. Exemplarily, the second end of the main plate 1002 can be fixedly connected with the front surface of one end of the end plate 1001, so that the combined shape of the main plate 1002 and the end plate 1001 is L-shaped, or can be fixedly connected with the front surface of the middle segment of the end plate 1001, so that the combined shape of the main plate 1002 and the end plate 1001 is T-shaped. The combined arrangement of the end plate 1001 and the main plate 1002 can make the locking plate 102 have a fixed moving interval in the movement along the first direction, facilitate the maintenance personnel to quickly find the preset position, and improve the operation convenience of the grounding device.

[0067] In addition, optionally, on the basis of the foregoing embodiments, continuing to refer to Figure 10The grounding device 100 with the locking function can further comprise a resilient element 1003, one end of the resilient element 1003 being connected to the front surface of the end plate, and the other end being connected to the front surface of the guide plate 801, wherein the front surface of the end plate 1001 is the surface connected to the main plate 1002, and the front surface of the guide plate 801 is the surface opposite to the front surface of the end plate 1001. When the resilient element 1003 is in a natural state, the resilient element 1003 pulls the locking plate to a preset position, so that the end pin of the grounding wire cannot pass through the pin hole 104, wherein the preset position is the position at which the locking plate can completely block the pin hole 104 during movement in the first direction; when the resilient element 1003 is in a maximum stretched state, the locking plate completely avoids the pin hole 104, so that the end pin of the grounding wire can pass through the pin hole 104, which on the one hand further limits the movable range of the locking plate in the first direction, and improves the operation convenience of the grounding device, and on the other hand avoids the locking plate from falling off and missing, and prolongs the service life of the grounding device with the locking function. Exemplarily, the resilient element 1003 can comprise a spring.

[0068] The application also provides a power transmission system. Figure 13 A circuit schematic diagram of a power transmission system provided for an embodiment of the application, Figure 14 A circuit schematic diagram of a control loop provided for an embodiment of the application, Figure 13 The schematic of the control loop is omitted, Figure 14 The control loop shown is Figure 13 The control loop in the power transmission system shown. On the basis of the foregoing embodiments, in combination with Figure 13 and Figure 14 The power transmission system 1300 comprises a bus 1301, and a mutual inductor switch GPT, a power transmission branch switch G, a control loop 1400 corresponding to the bus 1301, and the grounding device 100 with the locking function described in any of the foregoing embodiments. The mutual inductor switch GPT is arranged between the bus 1301 corresponding thereto and a voltage mutual inductor 1302. The power transmission branch switch G is arranged between the bus 1301 corresponding thereto and the power transmission branch corresponding thereto. The control signal receiving element RL of the locking structure in the grounding device 100 with the locking function and the control branch 1401 are connected in series between the positive pole +KM and the negative pole -KM of a grounding control power supply, forming the control loop 1400; the locking structure is used to release or lock the locking plate according to whether there is a control signal on the control loop 1400 corresponding thereto. The control branch 1401 comprises a first branch in which a first contact G1 and a second contact G2 are connected in series, the first contact G1 is opposite to the on-off state of the mutual inductor switch GPT corresponding thereto, and the second contact G2 is opposite to the on-off state of the power transmission branch switch G corresponding thereto.

[0069] Specifically, the bus 1301 is the total transmission line of the power transmission system, and the power of each device in the power transmission branch or system is supplied by the bus 1301. The number of buses 1301 is at least 1, and the embodiment takes the case where the number of buses is equal to 1 as an example for illustrative purposes. In the power transmission system, in order to improve the reliability of power supply and transmission, the number of buses 1301 can be greater than 2. Each bus 1301 has a corresponding mutual inductor switch GPT, a power transmission branch switch G, a control circuit 1400, and a grounding device 100 with a locking function. A bus 1301 and the corresponding mutual inductor switch GPT, power transmission branch switch G, control circuit 1400, and grounding device 100 with a locking function in the same group can be recorded as a power device. The mutual inductor switch GPT is a switch installed between the bus 1301 and the corresponding voltage mutual inductor 1302. The power transmission branch switch G is a switch installed between the bus 1301 and the corresponding power transmission branch. One bus 1301 can correspond to multiple power transmission branches, and the number of power transmission branches can be set according to actual needs. The power transmission branch is a power transmission branch on the bus 1301, and the power on the bus 1301 can be distributed to the next stage device. It should be particularly noted that if there are multiple power transmission branches corresponding to the bus 1301, then the second contact points G2 in the first branch are connected in series (as shown in the middle of the figure). Figure 14 The case where one bus corresponds to multiple power transmission branches is shown exemplarily).

[0070] The control circuit 1400 refers to the control circuit of the grounding device 100 with a locking function. The way of connecting the locking structure in the control circuit 1400 can be to connect the control signal receiving element RL in the locking structure to the control circuit 1400. The control signal receiving element RL can include a motor or an electromagnetic coil, for example. The control circuit 1400 is provided with a first contact point G1 related to the state of the mutual inductor switch GPT and a second contact point G2 related to the state of the power transmission branch switch G, so that the working state of the locking structure in the grounding device with a locking function is related to the switching state of the mutual inductor switch GPT and the switching state of the power transmission branch switch G, respectively.

[0071] The grounding device with the locking function is connected in series with the locking structure and the control branch between the positive electrode and the negative electrode of the grounding control power supply, forming the control loop. The control branch includes a first branch in series with a first contact point and a second contact point, the first contact point is opposite to the on-off state of the mutual inductor switch, and the second contact point is opposite to the on-off state of the power transmission branch switch, so that the working state of the locking structure in the grounding device with the locking function is related to the on-off state of the mutual inductor switch and the on-off state of the power transmission branch switch, respectively, realizing the control of the locking and release of the locking plate by the locking structure according to the state of the same group switch in the power transmission line. In the case of ensuring the safety of the power transmission line, the locking structure controls the release of the locking plate, so that the grounding pile is switched to the connected state, preventing the misoperation of the maintenance personnel in the dangerous situation, and improving the safety of the power transmission system.

[0072] Optionally, on the basis of the foregoing embodiment, the control loop can be connected with the two contact points of the air switch of the grounding control power supply before being connected with the positive and negative electrodes of the grounding control power supply, respectively. After the two contact points of the air switch are both closed, the control loop is powered on, so that the locking structure is truly affected by the mutual inductor switch and the power transmission branch switch. The setting mode of the control loop makes the locking structure receive the control signal to control the release of the locking plate only when all the mutual inductor switches and the power transmission branch switches in the group are turned off.

[0073] In the case that the power transmission system includes a plurality of busbars, a bus coupler and a unilateral switch corresponding to each of the two busbars can be arranged between any two busbars. The two unilateral switches are arranged in series between different ends of the bus coupler and the corresponding busbars, respectively. Corresponding to the unilateral switch, a unilateral contact point corresponding to the busbar in the group is further arranged in series in the first branch. The unilateral contact point has the same on-off state as the corresponding unilateral switch.

[0074] The power transmission system can further include at least one grounding switch corresponding to the busbar, and the grounding switch corresponds to the grounding device with the locking function corresponding to the busbar in a one-to-one manner. The control branch further includes a second branch in parallel with the first branch, and the second branch includes at least one third contact point in parallel, the third contact point corresponds to the grounding switch in a one-to-one manner and has the same on-off state as the corresponding grounding switch.

[0075] Exemplarily, Figure 15 Another circuit schematic diagram of a power transmission system provided by the embodiment of the present application, Figure 16 Another circuit schematic diagram of a control loop provided by the embodiment of the present application, wherein, Figure 15 The schematic of the control loop is omitted, Figure 16 The control loop shown is Figure 15 The control loop in the power transmission system shown is combinedFigure 15 and Figure 16 In this embodiment, the electric lock body of the locking structure adopts a combination of a telescopic lock rod, an electromagnetic coil and an armature, the electromagnetic coil serving as a control signal receiving member and being connected to the control circuit 1400. The power transmission system 1300 includes two busbars, a first busbar 1M and a second busbar 2M, and four power transmission branches, a first power transmission branch L1, a second power transmission branch L2, a third power transmission branch L3 and a fourth power transmission branch L4, and a first grounding knife switch J10 corresponding to the first busbar 1M and a second grounding knife switch J20 corresponding to the second busbar 2M. Between the two busbars are connected in series a first one-sided knife switch G51 corresponding to the first busbar 1M, a bus tie switch DL5 and a second one-sided knife switch G52 corresponding to the second busbar 2M.

[0076] In addition, the power transmission system 1300 in this embodiment includes the following devices or components, which are described in detail here. The first power transmission branch switch DL1 is a power supply switch on the first power transmission branch L1, a branch one knife switch G11 is a power transmission branch knife switch on the first busbar side of the first power transmission branch L1, and a branch two knife switch G12 is a power transmission branch knife switch on the second busbar side of the first power transmission branch. The second power transmission branch switch DL2 is a power supply switch on the second power transmission branch L2, a branch one knife switch G21 is a power transmission branch knife switch on the first busbar side of the second power transmission branch L2, and a branch two knife switch G22 is a power transmission branch knife switch on the second busbar side of the second power transmission branch L2. The third power transmission branch switch DL3 is a power supply switch on the third power transmission branch L3, a branch one knife switch G31 is a power transmission branch knife switch on the first busbar side of the third power transmission branch L3, and a branch two knife switch G32 is a power transmission branch knife switch on the second busbar side of the third power transmission branch L3. The fourth power transmission branch switch DL4 is a power supply switch on the fourth power transmission branch L4, a branch one knife switch G41 is a power transmission branch knife switch on the first busbar side of the fourth power transmission branch L4, and a branch two knife switch G42 is a power transmission branch knife switch on the second busbar side of the fourth power transmission branch L4. The first voltage transformer PT1 is a voltage transformer corresponding to the first busbar 1M, and the first transformer knife switch GPT1 is a transformer knife switch provided between the first busbar 1M and the first voltage transformer PT1. The second voltage transformer PT2 is a voltage transformer corresponding to the second busbar 2M, and the second transformer knife switch GPT2 is a transformer knife switch provided between the second busbar 2M and the second voltage transformer PT2. The first grounding device J10-D is a grounding device with locking function corresponding to the first grounding knife switch J10, and the second grounding device J20-D is a grounding device with locking function corresponding to the second grounding knife switch J20.

[0077] The components of the control circuit 1400 are further explained in detail. The positive pole of the power supply +KM is the positive terminal of the ground control power supply of the electromagnetic lock control circuit, and the negative pole of the power supply -KM is the negative terminal of the ground control power supply of the electromagnetic lock control circuit. The ground control power supply refers to the power supply device that provides direct current power for the control circuit. The first air switch ZK1 is a circuit power air switch. When the first air switch ZK1 is in the closed position, the first normally open contact ZK11-2 and the second normally open contact ZK13-4 of the first air switch ZK1 are both closed, i.e. the ground control power supply is turned on. When the first air switch ZK1 is in the open position, the first normally open contact ZK11-2 and the second normally open contact ZK13-4 of the air switch ZK1 are both disconnected, i.e. the ground control power supply is turned off.

[0078] The first ground contact J101-2 is a normally open contact of the first ground knife switch J10. When the first ground knife switch J10 is in the closed position, the first ground contact J101-2 is closed, and when the first ground knife switch J10 is in the open position, the first ground contact J101-2 is disconnected. The one-branch-one-knife-switch contact G111-2 is a normally closed contact of the one-branch-one-knife-switch G11. When the one-branch-one-knife-switch G11 is in the open position, the one-branch-one-knife-switch contact G111-2 is closed. When the one-branch-one-knife-switch G11 is in the closed position, the one-branch-one-knife-switch contact G111-2 is disconnected. The two-branch-one-knife-switch contact G211-2 is a normally closed contact of the two-branch-one-knife-switch G21. When the two-branch-one-knife-switch G21 is in the open position, the two-branch-one-knife-switch contact G211-2 is closed. When the two-branch-one-knife-switch G21 is in the closed position, the two-branch-one-knife-switch contact G211-2 is disconnected. The three-branch-one-knife-switch contact G311-2 is a normally closed contact of the three-branch-one-knife-switch G31. When the three-branch-one-knife-switch G31 is in the open position, the three-branch-one-knife-switch contact G311-2 is closed. When the three-branch-one-knife-switch G31 is in the closed position, the three-branch-one-knife-switch contact G311-2 is disconnected. The four-branch-one-knife-switch contact G411-2 is a normally closed contact of the four-branch-one-knife-switch G41. When the four-branch-one-knife-switch G41 is in the open position, the four-branch-one-knife-switch contact G411-2 is closed. When the four-branch-one-knife-switch G41 is in the closed position, the four-branch-one-knife-switch contact G411-2 is disconnected.

[0079] The first single pole contact G511-2 is a normally closed contact of the first single pole knife switch G51. The first single pole contact G511-2 is closed when the first single pole knife switch G51 is in the open position. The first single pole contact G511-2 is open when the first single pole knife switch G51 is in the closed position. The second single pole contact G521-2 is a normally closed contact of the second single pole knife switch G52. The second single pole contact G521-2 is closed when the second single pole knife switch G52 is in the open position. The second single pole contact G521-2 is open when the second single pole knife switch G52 is in the closed position. The first transformer contact GPT11-2 is a normally closed contact of the first transformer knife switch GPT1. The first transformer contact GPT11-2 is closed when the first transformer knife switch GPT1 is in the open position. The first transformer contact GPT11-2 is open when the first transformer knife switch GPT1 is in the closed position.

[0080] The second ground contact J201-2 is a normally open contact of the second ground knife switch J20. The second ground contact J201-2 is closed when the second ground knife switch J20 is in the closed position. The second ground contact J201-2 is open when the second ground knife switch J20 is in the open position. The one branch two knife switch contact G121-2 is a normally closed contact of the one branch two knife switch G12. The one branch two knife switch contact G121-2 is closed when the one branch two knife switch G12 is in the open position. The one branch two knife switch contact G121-2 is open when the one branch two knife switch G12 is in the closed position. The two branch two knife switch contact G221-2 is a normally closed contact of the two branch two knife switch G22. The two branch two knife switch contact G221-2 is closed when the two branch two knife switch G22 is in the open position. The two branch two knife switch contact G221-2 is open when the two branch two knife switch G22 is in the closed position. The three branch two knife switch contact G321-2 is a normally closed contact of the three branch two knife switch G32. The three branch two knife switch contact G321-2 is closed when the three branch two knife switch G32 is in the open position. The three branch two knife switch contact G321-2 is open when the three branch two knife switch G32 is in the closed position. The four branch two knife switch contact G421-2 is a normally closed contact of the four branch two knife switch G42. The four branch two knife switch contact G421-2 is closed when the four branch two knife switch G42 is in the open position. The four branch two knife switch contact G421-2 is open when the four branch two knife switch G42 is in the closed position.

[0081] The second unilateral contact G521-2 is a normally closed contact of the second unilateral knife switch G52. When the second unilateral knife switch G52 is in the pulled-out position, the second unilateral contact G521-2 is closed, and when the second unilateral knife switch G52 is in the closed position, the second unilateral contact G521-2 is opened. The second mutual inductor contact GPT21-2 is a normally closed contact of the second mutual inductor knife switch GPT2. When the second mutual inductor knife switch GPT2 is in the pulled-out position, the second mutual inductor contact GPT21-2 is closed, and when the second mutual inductor knife switch GPT2 is in the closed position, the second mutual inductor contact GPT21-2 is opened.

[0082] The first coil RL1 is an electromagnetic coil in the grounding device corresponding to the first bus 1M with a locking function. When the first coil RL1 is powered, the armature corresponding to the coil is attracted, and the locking of the locking plate in the grounding device corresponding to the first bus 1M with a locking function is released. After the second coil RL2 is de-energized, the armature corresponding to the coil resets, and the locking of the locking plate in the grounding device corresponding to the second bus 2M with a locking function is achieved. The second coil RL2 is an electromagnetic coil in the grounding device corresponding to the second bus 2M with a locking function. When the second coil RL2 is powered, the armature corresponding to the coil is attracted, and the locking of the locking plate in the grounding device corresponding to the second bus 2M with a locking function is released. After the second coil RL2 is de-energized, the armature corresponding to the coil resets, and the locking of the locking plate in the grounding device corresponding to the second bus 2M with a locking function is achieved.

[0083] The control principle of the control circuit 1400 is further explained in detail. For the grounding device J10-D corresponding to the first bus 1M with locking function, the electromagnetic coil of the grounding device corresponding to the first bus is powered and the locking of the locking plate is released when one of the following conditions is met: 1) When the first bus 1M is in the maintenance state, the grounding control power supply of the control circuit is powered on, the first air switch ZK1 is in the closed position, and the first grounding knife switch J10 is in the closed position, so that the electromagnetic coil in the grounding device J10-D corresponding to the first bus is powered on. The action process of the control circuit in this state is the first process, that is, "power positive pole + KM → first normally open contact ZK1 1-2 → first grounding contact J10 1-2 → first coil RL1 → second normally open contact ZK1 3-4 → power negative pole - KM", wherein "→" indicates the conduction direction from the left node to the right node of the arrow. 2) When the first bus 1M is in the cold standby state, the grounding control power supply of the control circuit is powered on, the first air switch ZK1 is in the closed position, one branch one knife switch G11 is in the open position, two branch one knife switch G21 is in the open position, three branch one knife switch G31 is in the open position, four branch one knife switch G41 is in the open position, first unilateral knife switch G51 is in the open position, and first mutual inductor knife switch GPT1 is in the open position, so that the electromagnetic coil in the grounding device J10-D corresponding to the first bus is powered on. The action process of the control circuit in this state is the second process, that is, "power positive pole + KM → first normally open contact ZK1 1-2 → one branch one knife switch contact G11 1-2 → two branch one knife switch contact G21 1-2 → three branch one knife switch contact G31 1-2 → four branch one knife switch contact G41 1-2 → first unilateral contact G51 1-2 → first mutual inductor contact GPT11-2 → first coil RL1 1-2 → second normally open contact ZK1 3-4 → power negative pole - KM".

[0084] As with the first bus 1M with locking function of the grounding device J10-D, for the second bus 2M with locking function of the grounding device J120-D, when one of the following conditions is met, the electromagnetic coil of the grounding device corresponding to the bus is powered and the locking of the locking plate is released: 1) When the second bus 2M is in the maintenance state, the grounding control power supply of the control circuit is powered on, the first air switch ZK1 is in the closed position, and the second grounding knife switch J20 is in the closed position, so that the electromagnetic coil in the second bus corresponding to the grounding device with locking function J20-D is powered on. In this state, the action process of the control circuit is the third process, that is, "power positive pole + KM→first normally open contact ZK1 1-2→second grounding contact J20 1-2→second coil RL2→second normally open contact ZK1 3-4→power negative pole-KM", wherein "→" indicates the action direction from the left node to the right node of the arrow. 2) When the second bus 2M is in the cold standby state, the grounding control power supply of the control circuit is powered on, the first air switch ZK1 is in the closed position, one branch two knife switch G12 is in the open position, two branch two knife switch G22 is in the open position, three branch two knife switch G32 is in the open position, four branch two knife switch G42 is in the open position, second unilateral knife switch G52 is in the open position, and second mutual inductor knife switch GPT2 is in the open position, so that the electromagnetic coil in the second bus 2M corresponding to the grounding device with locking function J20-D is powered on. In this state, the action process of the control circuit is the fourth process, that is, "power positive pole + KM→first normally open contact ZK1 1-2→one branch two knife switch contact G12 1-2→two branch two knife switch contact G22 1-2→three branch two knife switch contact G32 1-2→four branch two knife switch contact G42 1-2→second unilateral contact G52 1-2→second mutual inductor contact GPT2 1-2→second coil RL2 1-2→second normally open contact ZK1 3-4→power negative pole-KM".

[0085] The power transmission system and the grounding device with locking function thereof provided by the application include a grounding stake, a locking plate and a locking structure. The first end of the grounding stake is connected with a ground net, and the second end of the grounding stake is provided with a through pin hole penetrating the side surface of the stake body, wherein the hole diameter of the through pin hole is greater than the cross-sectional diameter of the end pin of the grounding wire; the guide device in the locking structure is movably fitted between the locking plate, and the guide device is used for limiting the locking plate to move only in a first direction, wherein the first direction is perpendicular to the penetration direction of the through pin hole; the electric lock body in the locking structure is used for locking or releasing the locking plate according to a control signal; the position of the locked locking plate is fixed and closely attached to the through pin hole, so that the end pin of the grounding wire cannot penetrate the through pin hole; and the released locking plate can move away from the through pin hole in the first direction and avoid the through pin hole, so that the end pin of the grounding wire can penetrate the through pin hole, thereby realizing the physical locking of the grounding stake and avoiding the misoperation caused by the maintenance personnel unlocking the five-protection lock or skipping the microcomputer five-protection.

[0086] The foregoing detailed description has set forth various embodiments of the devices and / or processes via the use of specific terminology. However, embodiments thereof can be practiced with the exact description not being set forth but with the same essence; the principles set forth herein can be practiced with plasticity in a manner leading to structurally equivalent devices and / or processes. Therefore, this description is not to be construed as limiting; the scope of the claims will be construed in the broadest context allowed by law.

Claims

1. A grounding device with a locking function, characterized by, The grounding device with locking function is used in cooperation with a grounding wire and a five-prevention padlock. The grounding device with locking function comprises: a grounding stake, a first end of which is connected with a ground net, and a second end of which is provided with a through pin hole penetrating a side surface of the stake, wherein a hole diameter of the through pin hole is greater than a cross-sectional diameter of an end pin of the grounding wire; a locking plate and a locking structure, the locking structure comprising a guide device and an electric lock body, the guide device being movably fitted between the locking plate and the guide device, the guide device being used to limit the locking plate to move only in a first direction, wherein the first direction is perpendicular to a penetrating direction of the through pin hole; the electric lock body being used to lock or release the locking plate according to a control signal; after being locked, the locking plate is fixed in position and closely abuts the through pin hole, so that the end pin of the grounding wire cannot penetrate the through pin hole; after being released, the locking plate can move away from the through pin hole in the first direction and avoid the through pin hole, so that the end pin of the grounding wire can penetrate the through pin hole; a five-prevention padlock hole penetrating a front and back of the locking plate is provided on the locking plate, a hole diameter of the five-prevention padlock hole is greater than a cross-sectional diameter of a lock rod of the five-prevention padlock and less than the cross-sectional diameter of the end pin; wherein, after being locked, the locking plate is fixed in position and the five-prevention padlock hole thereon is opposite and closely abuts the through pin hole, so that the five-prevention padlock can penetrate the five-prevention padlock hole and the through pin hole in sequence; the guide device comprises a guide plate, a guide hole is provided on the guide plate, the guide hole penetrates a front and back of the guide plate and a penetrating direction of the guide hole is the first direction; a hole cross section of the guide hole is matched with a cross section of the locking plate, so that the locking plate can be nested in the guide hole and can only move in the penetrating direction of the guide hole; the locking plate comprises a main plate and an end plate, the main plate is movably fitted between the guide device; an extending direction of the main plate is the first direction and is perpendicular to an extending direction of the end plate, a first end of the main plate is used to abut the through pin hole, and a second end of the main plate is fixedly connected with the end plate; the end plate is used to lap on the guide plate or the electric lock body when the main plate moves to a preset position in the first direction, so as to limit a moving range of the locking plate in the first direction.

2. The grounding device with a locking function according to claim 1, characterized in that, the electric lock body comprises a telescopic lock rod and a control assembly, the control assembly is connected with the telescopic lock rod, and the control assembly is used to switch the telescopic lock rod to pop up or retract according to the control signal; a locking hole is provided on the locking plate and is matched with a cross-sectional shape of the telescopic lock rod, a drilling direction of the locking hole is perpendicular to the first direction; in the case that the locking plate is locked, the control assembly controls the telescopic lock rod to pop up and be embedded in the locking hole, so that the position of the locking plate is fixed and closely abuts the through pin hole, and the end pin of the grounding wire cannot penetrate the through pin hole; in the case that the locking plate is released, the control assembly controls the telescopic lock rod to retract from the locking hole, so that the locking plate can move in the first direction and avoid the through pin hole.

3. The grounding device with a locking function according to claim 2, characterized in that, The control assembly comprises a motor and a transmission structure; the transmission structure is connected with the telescopic lock rod, and is used for driving the telescopic lock rod to make corresponding actions according to power provided by the motor.

4. The grounding device with a locking function according to claim 2, wherein The control assembly comprises an electromagnetic coil and an armature; The armature is connected with the root of the telescopic lock rod, and is used for driving the telescopic lock rod to make corresponding actions according to power provided by the electromagnetic coil.

5. The grounding device with a locking function according to claim 1, wherein Further comprising a resilient element, one end of the resilient element is connected with the front surface of the end plate, and the other end is connected with the front surface of the guide plate, wherein the front surface of the end plate is a surface connected with the main plate, and the front surface of the guide plate is a surface opposite to the front surface of the end plate; When the resilient element is in a natural state, the locking plate is in a preset position, so that the end part of the grounding wire cannot pass through the through-hole, wherein the preset position is a position at which the locking plate can completely block the through-hole during movement in the first direction; when the resilient element is in a maximum stretched state, the locking plate completely avoids the through-hole, so that the end part of the grounding wire can pass through the through-hole.

6. A power transmission system characterized by, Further comprising: At least one bus, and a corresponding transformer knife switch, power transmission branch knife switch, control loop and the grounding device with locking function according to any one of claims 1-5; The transformer knife switch is arranged between the corresponding bus and a voltage transformer; The power transmission branch knife switch is arranged between the corresponding bus and a power transmission branch; The locking structure and the control branch in the grounding device with locking function are connected in series between the positive electrode and the negative electrode of the grounding control power supply, forming the control loop; the locking structure is used for releasing or locking the locking plate according to whether there is a control signal on the corresponding control loop; The control branch comprises a first branch in which a first contact point and a second contact point are connected in series, the first contact point is opposite to the on-off state of the corresponding transformer knife switch, and the second contact point is opposite to the on-off state of the power transmission branch knife switch.

7. The power transmission system of claim 6, wherein, Further comprising: At least one grounding knife switch corresponding to the bus; The control branch further comprises a second branch connected in parallel with the first branch, and the second branch comprises at least one third contact point connected in parallel, the third contact point corresponds to the grounding knife switch one by one and has the same on-off state as the corresponding grounding knife switch.

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