CN111987751A - Contact cabinet, contact circuit breaker and operation method thereof - Google Patents
Contact cabinet, contact circuit breaker and operation method thereof Download PDFInfo
- Publication number
- CN111987751A CN111987751A CN202010759574.2A CN202010759574A CN111987751A CN 111987751 A CN111987751 A CN 111987751A CN 202010759574 A CN202010759574 A CN 202010759574A CN 111987751 A CN111987751 A CN 111987751A
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- Prior art keywords
- breaker
- contact
- relay
- normally open
- module
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J4/00—Circuit arrangements for mains or distribution networks not specified as ac or dc
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
- H01H9/20—Interlocking, locking, or latching mechanisms
- H01H9/26—Interlocking, locking, or latching mechanisms for interlocking two or more switches
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
- H01H9/54—Circuit arrangements not adapted to a particular application of the switching device and for which no provision exists elsewhere
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J1/00—Circuit arrangements for dc mains or dc distribution networks
- H02J1/08—Three-wire systems; Systems having more than three wires
- H02J1/084—Three-wire systems; Systems having more than three wires for selectively connecting the load or loads to one or several among a plurality of power lines or power sources
- H02J1/086—Three-wire systems; Systems having more than three wires for selectively connecting the load or loads to one or several among a plurality of power lines or power sources for providing alternative feeding paths between load or loads and source or sources when the main path fails
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/007—Arrangements for selectively connecting the load or loads to one or several among a plurality of power lines or power sources
- H02J3/0073—Arrangements for selectively connecting the load or loads to one or several among a plurality of power lines or power sources for providing alternative feeding paths between load and source when the main path fails, e.g. transformers, busbars
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J9/00—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting
- H02J9/04—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J9/00—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting
- H02J9/04—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source
- H02J9/06—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems
- H02J9/068—Electronic means for switching from one power supply to another power supply, e.g. to avoid parallel connection
Abstract
The invention provides a contact breaker, which comprises a control circuit, a power supply circuit connected with the output end of the control circuit and an electric operating mechanism connected with the output end of the power supply circuit, wherein the control circuit comprises a first relay, a second relay, a first normally open contact and a second normally open contact of a contact breaker, normally open contacts and normally closed contacts of two incoming line breakers and an undervoltage module. The invention also provides a contact cabinet. The invention also provides an operation method of the contact breaker. The invention can effectively avoid the misoperation of the contact breaker, ensure the normal operation of the power supply system and prevent the occurrence of safety accidents.
Description
Technical Field
The invention relates to a contact cabinet, a contact breaker and an operation method thereof.
Background
The interconnection breaker is a switch which is arranged in the interconnection cabinet and plays an interconnection role. The contact cabinet is arranged between two power supplies, the two power supplies are both provided with incoming line circuit breakers, and when the incoming line circuit breakers are switched on, the power supplies can be supplied to loads. When one power supply room is in power failure or fault, the other power supply room can supply power to the power supply room through the communication cabinet, so that the power supply room can continue to normally supply power to the load. However, in the prior art, the operation of the contact breaker mainly depends on the compliance of the operator to the regulations and the switch operation specifications, and due to the experience and quality of the operator, the misoperation of the contact breaker is easily caused, which leads to the occurrence of safety accidents.
Disclosure of Invention
The invention aims to provide an interconnection cabinet, an interconnection breaker and an operation method thereof aiming at the defects of the prior art, which can effectively avoid misoperation on the interconnection breaker, ensure normal operation of a power supply system and prevent safety accidents.
The invention is realized by the following technical scheme:
a contact breaker is used for connecting two power supply rooms, both the two power supply rooms are provided with incoming line breakers, the contact breaker comprises a control circuit, a power supply circuit connected with the output end of the control circuit and an electric operating mechanism connected with the output end of the power supply circuit, the control circuit comprises a first relay, a second relay, a first normally open contact, a second normally open contact, a normally open contact and a normally closed contact of the contact breaker and an undervoltage module, a coil of the first relay is connected between the output end of one power supply room and the corresponding ground, a coil of the second relay is connected between the output end of the other power supply room and the corresponding ground, the first normally open contact of the first relay and the normally closed contact of the second relay are connected in series to form a first branch circuit, the first normally open contact of the second relay and the normally closed contact of the first relay are connected in series to form a second branch circuit, first branch road and second branch road one end are connected with the output between two confession electricity respectively, the other end is connected the back and is connected with undervoltage module one end again, the parallelly connected third branch road that forms of the second normally open contact of first relay and the second normally open contact of second relay, the normally open contact of a service breaker and the normally closed contact of another service breaker establish ties and form the fourth branch road, the normally closed contact of a service breaker and the normally open contact of another service breaker establish ties and form the fifth branch road, fourth branch road and the parallelly connected sixth branch road that forms of fifth branch road, undervoltage module, third branch road and sixth branch road establish ties, the sixth branch road is connected with two places respectively, the first normally open contact and the second normally open contact of interconnection circuit breaker respectively with the second, the normally closed contact of first relay is parallelly connected.
Further, the contact circuit breaker sets up in connecting the contact cabinet between two supplies power, is provided with two isolation switches of being connected with contact circuit breaker both ends respectively in the contact cabinet, control circuit still includes the seventh branch road of establishing ties the formation by the normally open contact of two isolation switches, and the seventh branch road is established ties with undervoltage module, third branch road and sixth branch road.
Further, the power supply loop comprises a rectification filter module, an LC oscillation module with an input end connected with the output end of the rectification filter module, an output module with an input end connected with the output end of the LC oscillation module, a sampling module with an input end connected with the sampling output end of the output module, and a feedback module with an input end connected with the output end of the sampling module, wherein the output end of the feedback module is connected with the feedback input end of the LC oscillation module, the input end of the rectification filter module is respectively connected with one end of the undervoltage module and one end of the sixth branch, and the output end of the output module is connected with.
Furthermore, the control circuit further comprises a third normally open contact of the first relay and a third normally open contact of the second relay, and the third normally open contacts of the first relay and the third relay are respectively connected in series between one end of the sixth branch and the ground corresponding to the two power supplies.
Further, the undervoltage module is an undervoltage release.
The invention is also realized by the following technical scheme:
a tie cabinet comprising a tie breaker as claimed in any one of the preceding claims.
Further, the contact cabinet is used for connecting between two supplies power, all is provided with the inlet wire circuit breaker in two supplies power, and the contact cabinet still includes the cabinet body and sets up at the internal two isolation switches of cabinet, and two isolation switches are connected with contact circuit breaker both ends respectively.
The invention is also realized by the following technical scheme:
a method of operating a contact breaker, comprising:
when both ends of the interconnection breaker are electroless, the interconnection breaker can not be switched on;
when both ends of the interconnection breaker are electrified, the interconnection breaker can not be switched on;
when one end of the interconnection breaker is electrified and the other end of the interconnection breaker is not electrified, the interconnection breaker can be switched on;
after the interconnection breaker is switched on, when no power is supplied to the other end of the interconnection breaker, the interconnection breaker can keep a switching-on state or a switching-off state;
and after the interconnection breaker is switched on, when the other end of the interconnection breaker is powered on, the interconnection breaker is instantaneously switched off.
Further, the contact circuit breaker sets up in the contact cabinet, is provided with two isolation switches of being connected with contact circuit breaker both ends respectively in the contact cabinet, and when two isolation switches break off, the contact circuit breaker can not close a floodgate.
The invention has the following beneficial effects:
1. when both ends of the interconnection breaker are electroless (namely, the incoming line breaker between two power supplies is switched off), the coil of the first relay and the coil of the second relay are not electrified, the first normally open contact of the first relay and the first normally open contact of the second relay are both disconnected, namely, the first branch and the second branch are both disconnected, the undervoltage module is powered off, the power circuit has no power input, and further the electric operating mechanism has no power, so that the interconnection breaker can be switched on neither manually nor electrically;
when both ends of the interconnection breaker are powered (namely, both incoming line breakers between two power supplies are switched on), both the coil of the first relay and the coil of the second relay are powered on, both the normally closed contact of the first relay and the normally closed contact of the second relay are disconnected, namely, both the first branch and the second branch are disconnected, the undervoltage module is powered off, the power supply loop has no power supply input, and further the electric operating mechanism has no power supply input, so that the interconnection breaker can not be switched on manually or electrically;
when one end of the interconnection breaker is powered (such as the incoming line breaker of the No. 1 power supply room is switched on and the incoming line breaker of the No. 2 power supply room is switched off), the coil of the first relay is powered on, the coil of the second relay is powered off, the first branch is switched on, the second branch is switched off, the third branch is switched on due to the closing of the second normally open contact of the first relay, and the fourth branch is also switched on, so that the undervoltage module is powered on, the power supply loop has input, the electric operating mechanism also has a power supply, and manual or electric switching-on can be carried out at the moment;
after the interconnection breaker is switched on and no incoming call exists between the 2# power supply room (namely, the incoming line breaker between the 2# power supply room is still switched off), the 2# power supply room is equipotential with the 1# power supply room through the interconnection breaker, the second relay coil is also electrified, the first branch and the second branch are both disconnected, but the first normally open contact and the second normally open contact of the interconnection breaker are both closed, the undervoltage module is still electrified, the electric operating mechanism still has a power supply, and at the moment, the interconnection breaker can be continuously kept in a switching-on state or is subjected to manual or electric switching-off operation;
when the incoming call comes from the 2# power supply room (namely the incoming line breaker of the 2# power supply room) after the interconnection breaker is switched on, the fourth branch circuit is switched off, the undervoltage module loses power, and the interconnection breaker is switched off instantly;
according to the analysis, the interconnection breaker is under the condition that potential safety hazard exists, no matter manual or electric can not close a switch, the misoperation to the interconnection breaker is effectively avoided, the normal operating of a power supply system is guaranteed, safety accidents are prevented, and most of contact control signals of the control circuit are all from the interconnection breaker, the misoperation caused by too far distance can be avoided to the greatest extent, and the limitation of the distance between the interconnection cabinet and the power supply room is basically avoided.
2. When two isolation switch break-offs (or arbitrary isolation switch break-offs), the seventh branch road disconnection, the undervoltage module loses the electricity, and electric operating mechanism does not have the power, and the contact circuit breaker can not close a floodgate, so can guarantee to close a floodgate first two isolation switch breaks, can avoid isolation switch on load, guarantee power supply system's safety.
Drawings
The present invention will be described in further detail with reference to the accompanying drawings.
Fig. 1 is a schematic circuit diagram of the present invention.
11, a first branch; 12. a second branch circuit; 13. a third branch; 14. a fourth branch; 15. a fifth branch; 16. a seventh branch; KA1, coil of first relay; KA2, coil of second relay; k11, a first normally open contact of the first relay; k12, a normally closed contact of a first relay; k13, a second normally open contact of the first relay; k14, a third normally open contact of the first relay; k21, a first normally open contact of a second relay; k22, a normally closed contact of a second relay; k23, a second normally open contact of the second relay; k24, a third normally open contact of the second relay; q1, first normally open contact of tie breaker; q2, second normally open contact of tie breaker; g1, isolating the normally open contact of the knife switch; g2, isolating the normally open contact of the knife switch; normally open contacts of DL11 and 1# power supply incoming line circuit breakers; normally closed contacts of DL12 and 1# power supply incoming line circuit breaker; normally open contacts of DL21 and 2# power supply incoming line circuit breakers; normally closed contacts of DL22 and 2# power supply incoming line circuit breakers; QT, undervoltage module; 21. a rectification filtering module; 22. an LC oscillation module; 23. an output module; 24. a sampling module; 25. a feedback module; 3. an electric operating mechanism.
Detailed Description
The interconnection cabinet is used for connecting between 1# and 2# power supplies, including the cabinet body, set up at internal two isolation switch of cabinet and interconnection circuit breaker, in the primary circuit, two isolation switch one ends are connected with interconnection circuit breaker both ends respectively, and the output is connected with two isolation switch other ends respectively between two powers supplies, all is provided with the inlet wire circuit breaker between two powers supplies. The connection lines of the primary circuit are known in the art.
The interconnection breaker comprises a control circuit, a power circuit connected with the output end of the control circuit and an electric operating mechanism 3 connected with the output end of the power circuit, wherein the control circuit comprises a first relay, a second relay, a first normally open contact Q1, a second normally open contact Q2, normally open contacts and normally closed contacts of two incoming line breakers, normally open contacts G1 and G2 of two isolation switches and an undervoltage module QT, a coil KA1 of the first relay is connected between a 1# power supply room output end 1# A (in the embodiment, the A phase is taken as an example, the B phase and the C phase are the same as the A phase) and a corresponding ground 1# N, a coil KA2 of the second relay is connected between a 2# power supply room output end 2# A and a corresponding ground 2# N, a first normally open contact K11 of the first relay and a normally closed contact K22 of the second relay are connected in series to form a first branch circuit 11, the first normally open contact K21 of the second relay is connected with the normally closed contact K12 of the first relay in series to form a second branch 12, one end of the first branch 11 and one end of the second branch 12 are respectively connected with the output ends of the two power supply rooms, the other end of the first branch is connected with one end of an undervoltage module QT, the second normally open contact K13 of the first relay and the second normally open contact K23 of the second relay are connected in parallel to form a third branch 13, the normally open contact DL11 of the 1# power supply room incoming line breaker and the normally closed contact DL22 of the 2# power supply room incoming line breaker are connected in series to form a fourth branch 14, the normally closed contact DL12 of the 1# power supply room incoming line breaker and the normally open contact DL21 of the 2# power supply room incoming line breaker are connected in series to form a fifth branch 15, the fourth branch 14 and the fifth branch 15 are connected in parallel to form a sixth branch, the normally open contacts G1 and G2 of the two isolation switches are, Seventh branch 16 and sixth branch are established ties, the sixth branch is connected with two places respectively, the third normally open contact K14 of first relay and the third normally open contact K24 of second relay are established ties respectively between the ground that corresponds between sixth branch one end and two power supplies, first normally open contact Q1 of interconnection circuit breaker is parallelly connected with the normally closed contact K22 of second relay, second normally open contact Q2 of interconnection circuit breaker is parallelly connected with the normally closed contact K12 of first relay.
The power supply loop comprises a rectification filter module 21, an LC oscillation module 22 with an input end connected with an output end of the rectification filter module 21, an output module 23 with an input end connected with an output end of the LC oscillation module 22, a sampling module 24 with an input end connected with a sampling output end of the output module 23, a feedback module 25 with an input end connected with an output end of the sampling module 24, an output end of the feedback module 25 is connected with a feedback input end of the LC oscillation module 22, an input end of the rectification filter module 21 is respectively connected with one end of a QT (quality control) under-voltage module and one end of a sixth branch, and an output end of. The specific circuits of the rectifying and filtering module 21, the LC oscillating module 22, the output module 23, the sampling module 24 and the feedback module 25 are all the prior art. The specific structure and circuit of the electric operating mechanism 3 are also prior art.
The undervoltage module QT is an undervoltage trip.
The operation method of the contact breaker comprises the following steps:
when the two isolation switches are switched off (or any isolation switch is switched off), the seventh branch 16 is disconnected, the under-voltage module QT loses power, the electric operating mechanism 3 has no power supply, and the interconnection breaker cannot be switched on;
when both ends of the interconnection breaker are electroless (namely, the incoming line breaker between two power supplies is equally switched off), the coil KA1 of the first relay and the coil KA2 of the second relay are not electrified, the first normally open contact K11 of the first relay and the first normally open contact K21 of the second relay are both disconnected, namely, the first branch circuit 11 and the second branch circuit 12 are both disconnected, the under-voltage module QT is de-electrified, the power circuit has no power input, and the electric operating mechanism 3 has no power, so that the interconnection breaker can be switched on manually or electrically;
when both ends of the interconnection breaker are powered (namely, both incoming line breakers between two power supplies are switched on), the coil KA1 of the first relay and the coil KA2 of the second relay are powered on, the normally closed contact K12 of the first relay and the normally closed contact K22 of the second relay are both disconnected, namely, the first branch circuit 11 and the second branch circuit 12 are both disconnected, the under-voltage module QT is powered off, the power circuit has no power input, and further the electric operating mechanism 3 has no power input, so that the interconnection breaker can not be switched on manually or electrically;
when one end of the interconnection breaker is powered (such as the incoming line breaker of the 1# power supply room is switched on and the incoming line breaker of the 2# power supply room is switched off), the coil KA1 of the first relay is powered on, the coil KA2 of the second relay is powered off, the first branch circuit 11 is switched on, the second branch circuit 12 is switched off, the third branch circuit 13 is switched on due to the fact that the second normally open contact K13 of the first relay is closed, the fourth branch circuit 14 is also switched on, so that the under-voltage module QT is powered on, the power circuit has input, the electric operating mechanism 3 also has a power supply, and manual or electric switching-on can be carried out at the moment;
when the interconnection breaker is switched on and no call is still received between the 2# power supply room (namely, the incoming line breaker between the 2# power supply room is still switched off), the 2# power supply room is equipotential with the 1# power supply room through the interconnection breaker, the second relay coil is also electrified, the first branch circuit 11 and the second branch circuit 12 are both opened, but the first normally open contact Q1 and the second normally open contact Q2 of the interconnection breaker are both closed, the third branch circuit 13 is conducted, the undervoltage module QT is still electrified, the electric operating mechanism 3 still has a power supply, at this time, the interconnection breaker can be kept in a switching-on state or is subjected to manual or electric switching-off operation, at this time, the first normally open contact Q1 and the second normally open contact Q2 of the interconnection breaker are both closed, but because the equipotential between the 1# power supply room and the 2# power supply room is equal, so that the first normally open contact Q1 and the second normally open contact Q2 of the interconnection breaker are both closed and then, similarly, the second normally open contact K13 of the first relay and the second normally open contact K23 of the second relay do not need to be worried about short circuit after being closed;
after the interconnection breaker is switched on and when the power supply 2# arrives (namely, the incoming line breaker is switched on between the power supply 2 #), the fourth branch 14 is disconnected, the under-voltage module QT loses power, and the interconnection breaker is instantaneously switched off.
The above description is only a preferred embodiment of the present invention, and therefore should not be taken as limiting the scope of the invention, which is defined by the appended claims and their equivalents and modifications within the scope of the description.
Claims (9)
1. The utility model provides a contact breaker for connect between two supplies power, all be provided with inlet wire circuit breaker, its characterized in that between two supplies power: the interconnection breaker comprises a control circuit, a power circuit connected with the output end of the control circuit and an electric operating mechanism connected with the output end of the power circuit, wherein the control circuit comprises a first relay, a second relay, a first normally open contact, a second normally open contact, a normally open contact and a normally closed contact of two incoming line breakers and an undervoltage module, a coil of the first relay is connected between the output end of one power supply room and the corresponding ground, a coil of the second relay is connected between the output end of the other power supply room and the corresponding ground, the first normally open contact of the first relay and the normally closed contact of the second relay are connected in series to form a first branch circuit, the first normally open contact of the second relay and the normally closed contact of the first relay are connected in series to form a second branch circuit, one end of the first branch circuit and one end of the second branch circuit are respectively connected with the output ends of the two power supply rooms, the other end of, the second normally open contact of the second of first relay and the second normally open contact of second relay are parallelly connected and form the third branch road, the normally open contact of a service breaker and the normally closed contact of another service breaker establish ties and form the fourth branch road, the normally closed contact of a service breaker and the normally open contact of another service breaker establish ties and form the fifth branch road, the fourth branch road and the parallelly connected sixth branch road that forms of fifth branch road, undervoltage module, third branch road and sixth branch road are established ties, the sixth branch road is connected with two places respectively, the first normally open contact and the second normally open contact of interconnection circuit breaker respectively with the second, the normally closed contact of first relay is parallelly connected.
2. The utility model provides a contact circuit breaker of claim 1, contact circuit breaker sets up in connecting the contact cabinet between two supplies power, is provided with two isolation switch that are connected with contact circuit breaker both ends respectively in the contact cabinet, its characterized in that: the control circuit further comprises a seventh branch formed by connecting normally open contacts of the two isolation switches in series, and the seventh branch is connected with the undervoltage module, the third branch and the sixth branch in series.
3. A contact breaker according to claim 1, characterized in that: the power supply loop comprises a rectification filter module, an LC oscillation module with an input end connected with the output end of the rectification filter module, an output module with an input end connected with the output end of the LC oscillation module, a sampling module with an input end connected with the sampling output end of the output module, and a feedback module with an input end connected with the output end of the sampling module, wherein the output end of the feedback module is connected with the feedback input end of the LC oscillation module, the input end of the rectification filter module is respectively connected with one end of an undervoltage module and one end of a sixth branch, and the output end of the output module is.
4. A contact breaker according to claim 1, 2 or 3, wherein: the control circuit further comprises a third normally open contact of the first relay and a third normally open contact of the second relay, and the third normally open contacts of the first relay and the third relay are respectively connected between one end of the sixth branch and the ground corresponding to the two power supply rooms in series.
5. A contact breaker according to claim 1, 2 or 3, wherein: the undervoltage module is an undervoltage release.
6. A contact cabinet, its characterized in that: comprising a tie breaker as claimed in any one of claims 1 to 5.
7. The connection cabinet of claim 6, wherein the connection cabinet is used for connecting two power supply rooms, and the two power supply rooms are internally provided with incoming line breakers, and the connection cabinet is characterized in that: the contact cabinet also comprises a cabinet body and two isolation switches arranged in the cabinet body, and the two isolation switches are respectively connected with two ends of the contact circuit breaker.
8. A method of operating a contact breaker, comprising: the method comprises the following steps:
when both ends of the interconnection breaker are electroless, the interconnection breaker can not be switched on;
when both ends of the interconnection breaker are electrified, the interconnection breaker can not be switched on;
when one end of the interconnection breaker is electrified and the other end of the interconnection breaker is not electrified, the interconnection breaker can be switched on;
after the interconnection breaker is switched on, when no power is supplied to the other end of the interconnection breaker, the interconnection breaker can keep a switching-on state or a switching-off state;
and after the interconnection breaker is switched on, when the other end of the interconnection breaker is powered on, the interconnection breaker is instantaneously switched off.
9. The method of claim 8, wherein the tie breaker is disposed in a tie cabinet, and two isolation switches connected to two ends of the tie breaker are disposed in the tie cabinet, respectively, the method further comprising: when the two isolation disconnecting links are disconnected, the interconnection breaker can not be switched on.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010759574.2A CN111987751B (en) | 2020-07-31 | 2020-07-31 | Communication cabinet, communication breaker and operation method of communication breaker |
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| CN202010759574.2A CN111987751B (en) | 2020-07-31 | 2020-07-31 | Communication cabinet, communication breaker and operation method of communication breaker |
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| CN111987751B CN111987751B (en) | 2023-05-05 |
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| CN202940634U (en) * | 2012-11-12 | 2013-05-15 | 湖北鑫鹰环保科技有限公司 | Control circuit of bus tie circuit breaker switch |
| CN103199614A (en) * | 2013-03-28 | 2013-07-10 | 辽宁华冶集团发展有限公司 | Two-way alternating current inlet wire and connection power distribution control method |
| CN204732967U (en) * | 2015-06-19 | 2015-10-28 | 郑州金源特变电气有限公司 | A kind of remote electric substation low-voltage dual power contact control device for power distribution cabinet |
| CN108321682A (en) * | 2018-03-26 | 2018-07-24 | 河南森源电气股份有限公司 | A kind of power distribution cabinet linkage control system and its contact cabinet control circuit |
| CN208461465U (en) * | 2018-05-28 | 2019-02-01 | 泰豪科技股份有限公司 | Two inlet wires one of one kind contact Power transfer system and power distribution equipment |
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