CN215343645U - High tension switchgear and high tension switchgear grounding system - Google Patents
High tension switchgear and high tension switchgear grounding system Download PDFInfo
- Publication number
- CN215343645U CN215343645U CN202121199773.9U CN202121199773U CN215343645U CN 215343645 U CN215343645 U CN 215343645U CN 202121199773 U CN202121199773 U CN 202121199773U CN 215343645 U CN215343645 U CN 215343645U
- Authority
- CN
- China
- Prior art keywords
- grounding
- switch
- circuit breaker
- switch cabinet
- state
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000012544 monitoring process Methods 0.000 claims abstract description 31
- 238000004891 communication Methods 0.000 claims description 14
- 238000010586 diagram Methods 0.000 description 9
- 230000005540 biological transmission Effects 0.000 description 7
- 230000003287 optical effect Effects 0.000 description 6
- 230000007246 mechanism Effects 0.000 description 4
- 230000008859 change Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 230000005611 electricity Effects 0.000 description 1
- 230000005669 field effect Effects 0.000 description 1
- 230000005283 ground state Effects 0.000 description 1
- 238000010295 mobile communication Methods 0.000 description 1
- 238000012806 monitoring device Methods 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
Images
Landscapes
- Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
Abstract
The utility model discloses a high-voltage switch cabinet and a grounding system of the high-voltage switch cabinet. The high-voltage switch cabinet comprises a circuit breaker, a grounding disconnecting link, a linkage module and an indicator lamp: the circuit breaker is used for connecting an upper-level line and a lower-level line; the grounding disconnecting link is electrically connected with the lower-level line and is used for grounding the lower-level line; the linkage module is linked with the grounding disconnecting link and the circuit breaker and is used for outputting the grounding state of the grounding disconnecting link and receiving an on-off control signal for controlling the on-off of the circuit breaker; the indicator light is electrically connected with the linkage module and used for indicating the grounding state. The high-voltage switch cabinet grounding system comprises the high-voltage switch cabinet and the electric power monitoring module, the electric power monitoring module is in signal connection with the linkage module, and the electric power monitoring module is used for receiving and displaying a grounding state and sending an on-off control signal. The high-voltage switch cabinet and the high-voltage switch cabinet grounding system can improve the operation efficiency and the safety of the high-voltage switch cabinet.
Description
Technical Field
The utility model relates to the technical field of power transmission, in particular to a high-voltage switch cabinet and a grounding system of the high-voltage switch cabinet.
Background
High-voltage switch cabinets are generally used for conducting and separating connection between a higher-level line and a lower-level line, and when the high-voltage switch cabinets are overhauled or related to work, grounding of the lower-level line is a necessary safety technical measure. According to the five-prevention requirement, in order to avoid the short circuit and the electric leakage of a higher-level line, the grounding knife switch of the high-voltage switch cabinet is mechanically interlocked with the handcart position of the circuit breaker, so that the grounding knife switch and the circuit breaker are prevented from being conducted simultaneously, but the conventional high-voltage switch cabinet often lacks an obvious warning signal for the grounding condition of a lower-level line, so that an operator needs to judge the grounding condition through an operation window and experience, the work efficiency is reduced, and certain misjudgment risk also exists. When the mechanical interlocking device breaks down, certain misoperation risk can exist, so that potential safety hazards exist in the switching operation of the conventional high-voltage switch cabinet.
SUMMERY OF THE UTILITY MODEL
The present invention is directed to solving at least one of the problems of the prior art. Therefore, the utility model provides a high-voltage switch cabinet and a high-voltage switch cabinet grounding system, which can improve the operation efficiency, reduce the potential safety hazard of switching operation and improve the safety of the high-voltage switch cabinet.
According to an embodiment of the first aspect of the utility model, the high voltage switchgear comprises:
the circuit breaker is used for connecting the upper-level line and the lower-level line;
a grounding switch electrically connected to the lower-stage line, the grounding switch being configured to ground the lower-stage line;
the linkage module is linked with the grounding disconnecting link and the circuit breaker and is used for outputting the grounding state of the grounding disconnecting link and receiving an on-off control signal for controlling the on-off of the circuit breaker;
and the indicating lamp is electrically connected with the linkage module and is used for indicating the grounding state.
The high-voltage switch cabinet according to the embodiment of the first aspect of the utility model has at least the following advantages:
the high-voltage switch cabinet comprises a circuit breaker, a grounding disconnecting link, a linkage module and an indicator light, wherein the circuit breaker is arranged on a handcart, the handcart is detachably connected with a cabinet body of the high-voltage switch cabinet, the circuit breaker can be moved through the handcart, the circuit breaker is connected between a superior line and an inferior line in series and is separated from the superior line and the inferior line, and when the circuit breaker is connected between the superior line and the inferior line in series, the conduction and the disconnection between the superior line and the inferior line can be controlled through a switch on the circuit breaker. The grounding knife switch is electrically connected with the lower circuit, so that the lower circuit can be grounded, and electric shock of an operator during operation is avoided. The linkage module is linked with the grounding switch, can acquire the ground connection state of grounding switch, and the linkage module is connected with the pilot lamp electricity, and the linkage module is according to the bright circumstances of going out of the ground connection state control pilot lamp of grounding switch to can obviously remind the ground connection condition of operation personnel subordinate line, improve operating efficiency, reduce the potential safety hazard of switching operation, improve high tension switchgear's security. The linkage module links with the circuit breaker according to the ground connection state of earthing knife-switch, be in the on-state when earthing knife-switch, the linkage module makes the circuit breaker maintain the state of opening circuit, be in the state of opening circuit when earthing knife-switch, the linkage module switches on and opens circuit according to the on-off control signal control circuit breaker that receives to realize the electric interlocking of earthing knife-switch and circuit breaker, prevent that earthing knife-switch and circuit breaker from being in the on-state simultaneously, avoid the emergence of short circuit and electric leakage, reduce the potential safety hazard of switching operation, improve high tension switchgear's security.
According to some embodiments of the present invention, the linkage module includes an auxiliary switch and a relay protection device, the auxiliary switch is in transmission connection with the grounding switch, the auxiliary switch is electrically connected with the relay protection device and the indicator light, the relay protection device is electrically connected with the circuit breaker through the auxiliary switch, and the relay protection device is configured to output the grounding state and receive the on-off control signal.
According to some embodiments of the present invention, the auxiliary switch is provided with a first normally open contact and a second normally open contact, the relay protection device is provided with a switching value input unit, the first normally open contact and the second normally open contact are linked with the grounding knife switch, the first normally open contact is connected in series with the indicator light, and the second normally open contact is connected in series with the switching value input unit.
According to some embodiments of the present invention, the circuit breaker is provided with a closing coil, the auxiliary switch is provided with a normally closed contact, the normally closed contact is linked with the grounding knife switch, and the relay protection device is provided with a first switching value output unit, wherein the first switching value output unit, the normally closed contact and the closing coil are connected in series.
According to some embodiments of the present invention, the relay protection device is provided with a second switching value output unit for outputting the ground state.
According to some embodiments of the utility model, the relay protection device is provided with a communication interface for transmitting the grounding state and receiving the on-off control signal.
According to the embodiment of the second aspect of the utility model, the grounding system of the high-voltage switch cabinet comprises:
the high voltage switchgear of the embodiment of the first aspect described above;
and the electric power monitoring module is in signal connection with the linkage module and is used for receiving and displaying the grounding state and sending the on-off control signal.
The grounding system of the high-voltage switch cabinet according to the embodiment of the second aspect of the utility model has at least the following advantages:
the high-voltage switch cabinet grounding system comprises the power monitoring module and the high-voltage switch cabinet of the embodiment of the first aspect, wherein the power monitoring module is electrically connected with the linkage module, the power monitoring module can receive the grounding state of the grounding disconnecting link from the linkage module and display the grounding state of the grounding disconnecting link, and the power monitoring module can send an on-off control signal to the linkage module, so that remote control is realized. The grounding state of the grounding disconnecting link can be observed visually and in real time through the power monitoring module, the grounding disconnecting link and the circuit breaker are prevented from being in a conducting state at the same time, short circuit and electric leakage are avoided, potential safety hazards of switching operation are reduced while operation efficiency is improved, and safety of the high-voltage switch cabinet is improved. In addition, the high-voltage switch cabinet grounding system uses the high-voltage switch cabinet of the first aspect, the linkage module is linked with the circuit breaker according to the grounding state of the grounding switch, when the grounding switch is in a conducting state, the linkage module enables the circuit breaker to be in a broken state, and at the moment, the on-off control signal sent by the power monitoring module cannot change the on-off state of the circuit breaker, so that the situation that the grounding switch and the circuit breaker are simultaneously in a conducting state due to misoperation of the power monitoring module is avoided, the occurrence of short circuit and electric leakage is prevented, the potential safety hazard of switching operation is reduced, and the safety of the high-voltage switch cabinet is improved.
Additional aspects and advantages of the utility model will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the utility model.
Drawings
The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
fig. 1 is a schematic block diagram of a high voltage switchgear provided in an embodiment of the present invention;
fig. 2 is a schematic block diagram of a high voltage switchgear according to another embodiment of the present invention;
fig. 3 is a schematic block diagram of a high voltage switchgear according to another embodiment of the present invention;
fig. 4 is a circuit diagram of an auxiliary switch of a high voltage switchgear provided in an embodiment of the present invention;
fig. 5 is a circuit diagram of the connection between the auxiliary switch and the indicator light of the high-voltage switch cabinet according to an embodiment of the utility model;
fig. 6 is a circuit diagram of the connection between the auxiliary switch of the high-voltage switch cabinet and the relay protection device according to an embodiment of the utility model;
fig. 7 is a circuit diagram of the connection of the auxiliary switch of the high-voltage switch cabinet with the relay protection device and the circuit breaker according to an embodiment of the utility model;
fig. 8 is a schematic block diagram of a grounding system of a high voltage switchgear according to an embodiment of the present invention;
fig. 9 is a schematic control interface diagram of a power monitoring module of a grounding system of a high-voltage switch cabinet according to an embodiment of the present invention.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.
In the description of the present invention, the meaning of a plurality of means is one or more, the meaning of a plurality of means is two or more, and larger, smaller, larger, etc. are understood as excluding the number, and larger, smaller, inner, etc. are understood as including the number. If the first and second are described for the purpose of distinguishing technical features, they are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.
In the description of the present invention, unless otherwise explicitly defined, terms such as arrangement, connection and the like should be broadly construed, and those skilled in the art can reasonably determine the specific meanings of the above terms in the present invention in combination with the detailed contents of the technical solutions.
The high-voltage switch cabinet according to the embodiment of the first aspect of the utility model is described in detail below with reference to the accompanying drawings.
Referring to fig. 1, an embodiment of the present invention provides a high voltage switchgear, including a circuit breaker 100, a grounding switch 200, a linkage module 300, and an indicator lamp 400, wherein the circuit breaker 100 is disposed on a handcart, the handcart is detachably connected to a cabinet body of the high voltage switchgear, the circuit breaker 100 can be moved by the handcart, the circuit breaker 100 is connected in series between an upper line and a lower line, and the circuit breaker 100 is separated from the upper line and the lower line, when the circuit breaker 100 is connected in series between the upper line and the lower line, the connection and disconnection between the upper line and the lower line can be controlled by a switch on the circuit breaker 100. The grounding knife switch 200 is electrically connected with the lower circuit, so that the lower circuit can be grounded, and electric shock of an operator during operation is avoided. The linkage module 300 is linked with the grounding switch 200, the grounding state of the grounding switch 200 can be acquired, the linkage module 300 is electrically connected with the indicator lamp 400, and the linkage module 300 controls the on/off of the indicator lamp 400 according to the grounding state of the grounding switch 200, so that the grounding condition of lower lines of an operator can be obviously reminded, the operation efficiency is improved, the potential safety hazard of switching operation is reduced, and the safety of a high-voltage switch cabinet is improved. The linkage module 300 is linked with the circuit breaker 100 according to the grounding state of the grounding switch 200, when the grounding switch 200 is in a conducting state, the linkage module 300 enables the circuit breaker 100 to be maintained in a broken state, and when the grounding switch 200 is in a broken state, the linkage module 300 controls the circuit breaker to be conducted and broken according to the received on-off control signal, so that the electrical interlocking of the grounding switch 200 and the circuit breaker 100 is realized, the grounding switch 200 and the circuit breaker 100 are prevented from being in a conducting state at the same time, the occurrence of short circuit and electric leakage is avoided, the potential safety hazard of switching operation is reduced, and the safety of a high-voltage switch cabinet is improved.
Referring to fig. 2, another embodiment of the present invention provides a high voltage switch cabinet, and on the basis of the above embodiment, the linkage module 300 includes an auxiliary switch 310 and a relay protection device 320, the auxiliary switch 310 is in transmission connection with the earthing switch 200 through a link mechanism, the on/off of the auxiliary switch 310 is synchronous with the state change of the earthing switch 200, and the auxiliary switch 310 reflects the earthing state of the earthing switch 200. The relay protection device 320 is electrically connected with the auxiliary switch 310, and the relay protection device 320 outputs the grounding state of the grounding switch 200 after detecting the on/off state of the auxiliary switch 310, so that the grounding state information of the grounding switch 200 is acquired, and the grounding state of the grounding switch 200 can be transmitted to other power monitoring equipment, thereby realizing remote monitoring. The auxiliary switch 310 is electrically connected with the indicator lamp 400, and when the auxiliary switch 310 is connected in series with the current path of the indicator lamp 400, the on/off of the indicator lamp 400 can be directly controlled through the on/off of the auxiliary switch 310. The relay protection device 320 can receive an on-off control signal for controlling the on-off of the circuit breaker 100, the output end of the relay protection device 320 is electrically connected with the circuit breaker 100 through the auxiliary switch 310, and the relay protection device 320 and the auxiliary switch 310 jointly control the on-off of the circuit breaker 100 to realize remote control. The auxiliary switch 310 of the embodiment is linked with the grounding switch 200, the grounding state of the grounding switch 200 is reflected by the auxiliary switch 310, the indicator lamp 400 and the circuit breaker 100 are controlled by the auxiliary switch 310, and the grounding switch 200 is electrically interlocked with the circuit breaker 100 through the auxiliary switch 310, so that the grounding switch 200 and the circuit breaker 100 are prevented from being in a conducting state at the same time, and short circuit and electric leakage are avoided. Therefore, the circuit of the embodiment has a simple structure, is easy to realize, and can reduce the control cost and reduce the potential safety hazard of switching operation; the high tension switchgear of this embodiment can communicate with other electric power supervisory equipment, realizes remote control, improves high tension switchgear's security.
Referring to fig. 3, 4, 5, 6 and 7, another embodiment of the present invention provides a high voltage switch cabinet, on the basis of the above embodiment, an auxiliary switch 310 is provided with a first normally open contact 311 and a second normally open contact 312, and a relay protection device 320 is provided with a switching value input unit 321. The first normally open contact 311 and the second normally open contact 312 are linked with the grounding knife switch 200: when the grounding knife switch 200 is in a conducting state, the first normally open contact 311 and the second normally open contact 312 are closed; when the earthing switch 200 is in the open state, the first normally-open contact 311 and the second normally-open contact 312 are opened. The first normally open contact 311 and the indicator lamp 400 are connected in series between the positive electrode and the negative electrode of the control power supply small bus, when the grounding disconnecting link 200 is in a conducting state, the first normally open contact 311 is closed, and the indicator lamp 400 is turned on; when the grounding switch 200 is in the open circuit state, the first normally open contact 311 is opened, and the indicator light 400 is turned off. The second normally open contact 312 and the switching value input unit 321 are connected in series between the positive and negative poles of the control power supply small bus, the switching value input unit 321 is provided with an optical coupler element, when the grounding switch 200 is in a conducting state, the second normally open contact 312 is closed, the optical coupler element is electrified, the output level of the optical coupler element changes, and the relay protection device 320 can obtain the grounding state of the grounding switch 200 by detecting the output level of the optical coupler element. For example, when the second normally open contact 312 is closed, the optical coupling element outputs a low level, and the relay protection device 320 detects that the grounding state of the grounding switch 200 is on; when the second normally open contact 312 is opened, the optical coupling element outputs a high level, and the relay protection device 320 detects that the grounding state of the grounding switch 200 is open. Therefore, the circuit of the embodiment has a simple structure, is easy to control the indicator lamp 400 and detect the grounding state of the grounding switch 200, and saves the control cost; the relay protection device 320 plays a role of isolating the high voltage switch cabinet and other power monitoring equipment, and prevents the other power monitoring equipment from being damaged by high voltage.
Further, the circuit breaker 100 is provided with a closing coil 110, the auxiliary switch 310 is provided with a normally closed contact 313, and the relay protection device 320 is provided with a first switching amount output unit 322. The normally closed contact 313 is linked with the earthing knife-switch 200: when the grounding switch 200 is in a conducting state, the normally closed contact 313 is opened; when the earthing switch 200 is in the open state, the normally closed contact 313 is closed. The first switching value output unit 322, the normally closed contact 313 and the closing coil 110 are connected in series between the positive and negative poles of the control power supply small bus. When the grounding switch 200 is in a conducting state, the normally closed contact 313 is opened, and at this time, no matter the first switching value output unit 322 is in a conducting state or in a breaking state, the closing coil 110 is in a power-off state, and the circuit breaker 100 is broken. When the earthing switch 200 is in the open state, the normally closed contact 313 is closed: if the first switching value output unit 322 is turned on, the closing coil 110 is powered on, and the circuit breaker 100 is turned on; if the first switching value output unit 322 is open, the closing coil 110 loses power, and the circuit breaker 100 is open. In the embodiment, the normally closed contact 313 of the auxiliary switch 310 and the closing coil 110 of the circuit breaker 100 are connected in series to form an interlock circuit between the grounding switch 200 and the circuit breaker 100, when the grounding switch 200 is turned on, the circuit breaker 100 cannot be turned on either through the local switch of the circuit breaker 100 or through the remote control port of the circuit breaker 100, so that the circuit breaker 100 and the grounding switch 200 are prevented from being turned on at the same time, and short circuit and electric leakage are avoided. The first switching value output unit 322 of the relay protection device 320 is connected in series with the closing coil 110 of the circuit breaker 100, and on the premise that the normally closed contact 313 is closed, that is, the grounding switch 200 is open, the on-off state of the circuit breaker 100 can be controlled by changing the on-off state of the first switching value output unit 322, so that remote control is realized, the safety of a high-voltage switch cabinet is improved, and the potential safety hazard of switching operation is reduced.
Further, the relay protection device 320 is provided with a second switching value output unit 323, and the relay protection device 320 detects the grounding state of the grounding switch 200 through the switching value input unit 321, and outputs the grounding state of the grounding switch 200 through the second switching value output unit 323, specifically, when the grounding switch 200 is turned on, the second switching value output unit 323 is turned on, and when the grounding switch 200 is turned off, the second switching value output unit 323 is turned off. The relay protection device 320 reflects the grounding state of the grounding switch 200 through the second switching value output unit 323, the second switching value output unit 323 can be connected in series to the power lines, signal lines or other lines with specific functions of other devices or apparatuses, and controls the on/off of the lines, so that the grounding switch 200 and the devices or apparatuses are linked, and the relay protection device 320 enables the high-voltage switch cabinet of the embodiment to have good expansibility.
Further, the relay protection device 320 is provided with a communication interface 324, the relay protection device 320 can be in signal connection with other power monitoring equipment through the communication interface 324, the relay protection device 320 sends the grounding state of the grounding switch 200 to other power monitoring equipment through the communication interface 324 and obtains on-off control signals which are sent by other power monitoring equipment and used for controlling the on-off of the circuit breaker 100 through the communication interface 324, so that remote monitoring and remote control are achieved, the safety of the high-voltage switch cabinet is improved, and the potential safety hazard of switching operation is reduced. In this embodiment, the communication interface 324 is an RS485 bus interface, and the communication interface 324 communicates with other power monitoring devices through the RS485 bus.
It should be noted that the communication interface 324 may also be a wired interface such as an ethernet, a CAN bus, an SPI bus, an I2C bus, or a wireless interface such as a WIFI, a bluetooth, a ZigBee, a mobile communication network, and the like, and this embodiment is used to illustrate the technical solution of the present invention and not to limit the implementation form of the communication interface 324. It should be noted that the auxiliary switch 310, the first normally open contact 311, the second normally open contact 312 and the normally closed contact 313 may be mechanical switches composed of a knife switch, a hinged component, a conductive component, etc., or analog switches composed of semiconductors such as a diode, a triode, a transistor, a field effect transistor, etc., the auxiliary switch 310 may be in transmission connection with the grounding knife switch 200 through a mechanical link mechanism, or may be in transmission connection through a transmission mechanism such as a cylinder push rod and a hydraulic push rod with a sensor, a trigger, an electromagnetic valve, a relay and a switch, and those skilled in the art may make various changes without departing from the spirit of the present invention.
The grounding system of the high-voltage switch cabinet according to the embodiment of the second aspect of the utility model is described in detail below with reference to the accompanying drawings.
Referring to fig. 8 And 9, an embodiment of the present invention provides a high voltage switch cabinet grounding system, including a power monitoring module 500 And the high voltage switch cabinet of the first embodiment, in this embodiment, the power monitoring module is an SCADA (Supervisory Control And Data Acquisition) module, And the power monitoring module 500 is in signal connection with the linkage module 300. The linkage module 300 includes an auxiliary switch 310 and a relay protection device 320, the auxiliary switch 310 is in transmission connection with the grounding switch 200 through a link mechanism, the relay protection device 320 is electrically connected with the auxiliary switch 310, and the relay protection device and the auxiliary switch 310 together control the on/off of the circuit breaker 100. The relay protection device 320 is provided with a communication interface 324, the power monitoring module 500 is in signal connection with the communication interface 324, the relay protection device 320 detects the on/off state of the auxiliary switch 310, the relay protection device 320 outputs the grounding state of the grounding switch 200 to the power monitoring module 500 through the communication interface 324, and the power monitoring module 500 sends an on/off control signal for controlling the on/off state of the circuit breaker 100 to the relay protection device 320 through the communication interface 324, so that remote monitoring is realized. The grounding state of the grounding switch 200 can be visually observed in real time through the power monitoring module 500, the grounding switch 200 and the circuit breaker 100 are prevented from being in a conducting state at the same time, short circuit and electric leakage are avoided, potential safety hazards of switching operation are reduced while the operation efficiency is improved, and the safety of the high-voltage switch cabinet is improved. In addition, the auxiliary switch 310 and the relay protection device 320 jointly control the on/off of the circuit breaker 100: when the grounding switch 200 is in the on state, the auxiliary switch 310 maintains the circuit breaker 100 in the off state, and the on-off control signal sent by the power monitoring module 500 cannot change the on-off state of the circuit breaker 100, so that the grounding switch 200 and the circuit breaker 100 are prevented from being in the on state simultaneously due to misoperation on the power monitoring module 500, the occurrence of short circuit and electric leakage is prevented, the potential safety hazard of switching operation is further reduced, and the safety of the high-voltage switch cabinet is improved.
Since the grounding system of the high-voltage switch cabinet according to the embodiment of the present invention includes the high-voltage switch cabinet according to any one of the embodiments, the grounding system of the high-voltage switch cabinet according to the embodiment of the present invention has the technical effects brought by the high-voltage switch cabinet according to any one of the embodiments, and therefore, specific technical effects of the grounding system of the high-voltage switch cabinet according to the embodiment of the present invention can refer to the technical effects of the high-voltage switch cabinet according to any one of the embodiments, and are not described herein again.
The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge of those skilled in the art without departing from the gist of the present invention.
Claims (6)
1. A high-voltage switchgear, comprising:
the circuit breaker is used for connecting the upper-level line and the lower-level line;
a grounding switch electrically connected to the lower-stage line, the grounding switch being configured to ground the lower-stage line;
the linkage module is linked with the grounding disconnecting link and the circuit breaker and used for outputting a grounding state of the grounding disconnecting link and receiving an on-off control signal for controlling the on-off of the circuit breaker;
the indicating lamp is electrically connected with the linkage module, the auxiliary switch is electrically connected with the relay protection device and the indicating lamp, and the indicating lamp is used for indicating the grounding state.
2. The high-voltage switch cabinet according to claim 1, wherein the auxiliary switch is provided with a first normally open contact and a second normally open contact, the relay protection device is provided with a switching value input unit, the first normally open contact and the second normally open contact are linked with the grounding knife switch, the first normally open contact is connected in series with the indicator light, and the second normally open contact is connected in series with the switching value input unit.
3. The high-voltage switch cabinet according to claim 1, wherein the circuit breaker is provided with a closing coil, the auxiliary switch is provided with a normally closed contact, the normally closed contact is linked with the grounding knife switch, and the relay protection device is provided with a first switching value output unit, wherein the first switching value output unit, the normally closed contact and the closing coil are connected in series.
4. The high-voltage switch cabinet according to claim 1, wherein the relay protection device is provided with a second switching value output unit for outputting the grounding state.
5. The high-voltage switch cabinet according to claim 1, wherein the relay protection device is provided with a communication interface for transmitting the grounding state and receiving the on-off control signal.
6. A high tension switchgear grounding system, comprising:
the high voltage switchgear of any one of claims 1 to 5;
and the electric power monitoring module is in signal connection with the linkage module and is used for receiving and displaying the grounding state and sending the on-off control signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121199773.9U CN215343645U (en) | 2021-05-31 | 2021-05-31 | High tension switchgear and high tension switchgear grounding system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121199773.9U CN215343645U (en) | 2021-05-31 | 2021-05-31 | High tension switchgear and high tension switchgear grounding system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215343645U true CN215343645U (en) | 2021-12-28 |
Family
ID=79549583
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121199773.9U Active CN215343645U (en) | 2021-05-31 | 2021-05-31 | High tension switchgear and high tension switchgear grounding system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215343645U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113285382A (en) * | 2021-05-31 | 2021-08-20 | 中车广东轨道交通车辆有限公司 | High-voltage switch cabinet, high-voltage switch cabinet grounding system and high-voltage switch cabinet grounding method |
-
2021
- 2021-05-31 CN CN202121199773.9U patent/CN215343645U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113285382A (en) * | 2021-05-31 | 2021-08-20 | 中车广东轨道交通车辆有限公司 | High-voltage switch cabinet, high-voltage switch cabinet grounding system and high-voltage switch cabinet grounding method |
| CN113285382B (en) * | 2021-05-31 | 2025-06-03 | 中车广东轨道交通车辆有限公司 | High voltage switchgear, high voltage switchgear grounding system and high voltage switchgear grounding method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107492955B (en) | Family safety power distribution system and distribution box | |
| CN203344750U (en) | High voltage interlocking system of electric vehicle | |
| CN105449865A (en) | Intelligent (feeder terminal unit) FTU used for fault positioning and isolating for distribution network | |
| KR100990736B1 (en) | Switchgear protection and control to monitor the status of the protection system | |
| CN202586259U (en) | Minisize intelligent electric leakage comprehensive protection switch | |
| CN106655898B (en) | Reactor cabinet control circuit | |
| CN215343645U (en) | High tension switchgear and high tension switchgear grounding system | |
| CN213845932U (en) | Power distribution control cabinet and monitoring system thereof | |
| CN201674143U (en) | Mine general handcart type vacuum power distribution cabinet | |
| CN210838587U (en) | Low-voltage protection box of hinge connection mechanism | |
| CN113285382B (en) | High voltage switchgear, high voltage switchgear grounding system and high voltage switchgear grounding method | |
| CN201075586Y (en) | Low-voltage distribution operating controller | |
| CN207719072U (en) | A kind of circuit-breaker switching on-off loop monitor | |
| KR20070119222A (en) | Circuit Breaker Test Device for Digital Miniature Switchgear | |
| CN214585872U (en) | Fault tripping remote indicating device and circuit breaker | |
| CN102097226B (en) | State signal acquisition device of high-voltage circuit breaker in substation | |
| CN210490548U (en) | Intelligent high-voltage switch cabinet | |
| CN202111526U (en) | Intelligent monitoring device used for high-voltage switch device | |
| EP3657523B1 (en) | Load switch | |
| CN209134137U (en) | Low-tension switch cabinet operating mechanism monitoring device | |
| CN107732864A (en) | Intelligent air switch system, mobile terminal and server | |
| CN201069463Y (en) | Quick diagnosis instrument for power loss of low-voltage control line | |
| CN102437520B (en) | Control circuit board of power distribution cabinet | |
| CN206698020U (en) | A kind of tele-control system of breaker | |
| KR200426099Y1 (en) | Circuit Breaker Test Device for Digital Miniature Switchgear |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |