CN116683646A - Power distribution terminal unit - Google Patents
Power distribution terminal unit Download PDFInfo
- Publication number
- CN116683646A CN116683646A CN202310675430.2A CN202310675430A CN116683646A CN 116683646 A CN116683646 A CN 116683646A CN 202310675430 A CN202310675430 A CN 202310675430A CN 116683646 A CN116683646 A CN 116683646A
- Authority
- CN
- China
- Prior art keywords
- circuit
- terminal unit
- distribution terminal
- power supply
- board card
- 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.)
- Pending
Links
- 238000009826 distribution Methods 0.000 title claims abstract description 64
- 238000005070 sampling Methods 0.000 claims abstract description 10
- 238000004891 communication Methods 0.000 abstract description 14
- 230000005611 electricity Effects 0.000 description 8
- 238000011065 in-situ storage Methods 0.000 description 8
- 238000013461 design Methods 0.000 description 4
- 230000010354 integration Effects 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 206010063385 Intellectualisation Diseases 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000004146 energy storage Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
Classifications
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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
- H02J13/00—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
- H02J13/00032—Systems characterised by the controlled or operated power network elements or equipment, the power network elements or equipment not otherwise provided for
- H02J13/00036—Systems characterised by the controlled or operated power network elements or equipment, the power network elements or equipment not otherwise provided for the elements or equipment being or involving switches, relays or circuit breakers
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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
- H02J13/00—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
- H02J13/00001—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by the display of information or by user interaction, e.g. supervisory control and data acquisition systems [SCADA] or graphical user interfaces [GUI]
-
- 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
- H02J13/00—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
- H02J13/00002—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by monitoring
Abstract
The invention provides a power distribution terminal unit, which relates to the field of electrical equipment and comprises: the connecting plate card is used for realizing the connection between the functional modules through the printed circuit board; the CPU board card is used for sending out a control instruction or collecting circuit sampling data; the sampling board is used for collecting voltage signals and current signals of a main loop of the circuit breaker; the power supply and the operation loop board card are used for supplying power to each module connected with the connection board card or conveying the power supply to a power utilization loop of the circuit breaker, and the operation loop is connected with a switching-off coil and a switching-on coil of the circuit breaker; the operation button is connected with the power supply and the operation loop board card and is arranged on the front panel of the box body. The invention can collect power supply and switch state, can control the switch through background communication, is compatible with local control, can display the switch state locally, and is convenient to install in a switch cabinet.
Description
Technical Field
The invention relates to the field of electrical equipment, in particular to a power distribution terminal unit.
Background
In the field of power distribution, a switch cabinet is the most common electrical equipment, and elements such as related indication of a switch state, a control button for opening and closing and the like are often needed on the switch cabinet. At the same time, as the digital demand increases, digital quantity acquisition of common switches and power supplies becomes increasingly important. The existing products supporting the state collection of the switch and capable of uploading the background monitoring system are not various, and are common devices of secondary relay protection, but for a 400V low-voltage product, the relay protection device is not configured, the digital collection and the on-off state display of the low-voltage switch are difficult, the existing products also have no in-situ control function, according to the prior art, the 400V low-voltage power distribution field cannot be realized, and meanwhile, the functions of digital collection, uploading, background control, in-situ control, breaker state indication and the like are met.
Therefore, how to design a power distribution terminal that supports multiple control modes and has comprehensive functions becomes a technical problem to be solved.
Disclosure of Invention
The invention aims to at least solve one of the technical problems in the prior art or related art, and provides a power distribution terminal unit which has high integration level, is simple and convenient to install, can collect power supply and switch states, can control a switch through background communication, and is compatible with on-site control.
The invention is realized by the following technical scheme: a power distribution terminal unit comprising: the connecting plate card is arranged in the box body of the terminal and is used for realizing the connection between the functional modules through the printed circuit board; the CPU board card is connected to the connecting board card and is used for sending out a control instruction or collecting circuit sampling data; the sampling board is connected to the connecting board and used for collecting voltage signals and current signals of a main circuit of the circuit breaker, converting the voltage signals of the main circuit of the circuit breaker into signal quantity through an internal transformer and transmitting the signal quantity to the CPU board through the connecting board; the power supply and operation loop board card is connected to the connecting board card and used for converting the power supply into weak current to supply power for each module connected with the connecting board card and simultaneously conveying the power supply to the power consumption loop of the circuit breaker. The operation button at least comprises a brake separating button and a brake closing button, wherein the brake separating button and the brake closing button are arranged on a front panel of the box body, the power supply board card is connected through a prefabricated wire harness, the operation button is connected to an operation loop of the power supply and the operation loop board card, and the operation loop is connected with a brake separating coil and a brake closing coil of the circuit breaker.
According to the power distribution terminal unit provided by the invention, preferably, the connecting plate card is also provided with a plurality of status indicator lamps, the status indicator lamps are exposed on the front panel of the box body, the status indicator lamps are also connected with the CPU board card, and control instructions sent by the CPU board card are executed.
According to the power distribution terminal unit provided by the invention, preferably, the status indicator lamp is used for indicating the working status of the circuit breaker or the working status of the power distribution terminal unit.
According to the power distribution terminal unit provided by the invention, preferably, the operation loop at least comprises a power supply loop, a CPU opening loop, a CPU closing loop, a button opening loop and a button closing loop which are connected with an external power supply.
The power distribution terminal unit provided by the invention preferably further comprises: and the control mode switching knob at least comprises an on-site mode and a remote mode, and is connected to the operation loop through an internal wiring harness and connected with the CPU switching-on contact and the CPU switching-off contact.
According to the power distribution terminal unit provided by the invention, preferably, the operation loop is also provided with an electric interlocking loop and an electric interlocking switch.
The beneficial effects obtained by the invention at least comprise: through integrated button, knob and operation return circuit, realized that the user is on-the-spot divide-shut brake, remote (remote control) divide-shut brake etc. multiple circuit breaker control mode, the use mode is nimble various. The circuit breaker is connected with the circuit breaker through the prefabricated wire harness by adopting a modularized design, and meanwhile, communication is opened, and control and digital quantity acquisition of the circuit breaker can be realized through a power distribution terminal unit through a background or other devices. The integration level and the stability of the power distribution terminal unit are greatly improved, the power supply and the switch state can be acquired, the switch can be controlled through background communication, the power distribution terminal unit is compatible with local control, the switch state can be displayed locally, and the power distribution terminal unit is convenient to install in a switch cabinet.
Drawings
Fig. 1 shows a schematic view of a front panel of a power distribution terminal unit according to one embodiment of the invention.
Fig. 2 shows a schematic circuit configuration of a power distribution terminal unit according to an embodiment of the present invention.
Fig. 3 shows a schematic diagram of an operational loop structure of a power distribution terminal unit according to still another embodiment of the present invention.
Detailed Description
In order that the above-recited objects, features and advantages of the present invention will be more clearly understood, a more particular description of the invention will be rendered by reference to the appended drawings and appended detailed description.
In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art in a specific case.
As shown in fig. 1, 2 and 3, the present invention provides a power distribution terminal unit, including: the connecting plate card is arranged in the box body of the terminal and is used for realizing the connection between the functional modules through the printed circuit board; the CPU board card is connected to the connecting board card and is used for sending out a control instruction or collecting circuit sampling data; the sampling board is connected to the connecting board and used for collecting voltage signals and current signals of a main circuit of the circuit breaker, converting the voltage signals of the main circuit of the circuit breaker into signal quantity through an internal transformer and transmitting the signal quantity to the CPU board through the connecting board; the power supply and operation loop board card is connected to the connecting board card and used for converting the power supply into weak current to supply power for each module connected with the connecting board card and simultaneously conveying the power supply to the power consumption loop of the circuit breaker. The operation button at least comprises a brake separating button and a brake closing button, wherein the brake separating button and the brake closing button are arranged on a front panel of the box body, the power supply board card is connected through a prefabricated wire harness, the operation button is connected to an operation loop of the power supply and the operation loop board card, and the operation loop is connected with a brake separating coil and a brake closing coil of the circuit breaker.
According to the above embodiment, preferably, further comprising: and the control mode switching knob at least comprises an on-site mode and a remote mode, and is connected to the operation loop through an internal wiring harness and connected with the CPU switching-on contact and the CPU switching-off contact.
According to the above embodiment, preferably, the connection board card is further provided with a plurality of status indicator lamps, the status indicator lamps are exposed on the front panel of the box body, the status indicator lamps are further connected with the CPU board card, and control instructions sent by the CPU board card are executed.
According to the above embodiment, it is preferable that the status indicator lamp is used to indicate the operating status of the circuit breaker or the operating status of the distribution terminal unit.
According to the above embodiment, preferably, the operation circuit includes at least a power supply circuit connected to an external power supply, a CPU opening circuit, a CPU closing circuit, a button opening circuit, and a button closing circuit.
According to the above embodiment, preferably, an electrical interlock circuit and an electrical interlock switch are further provided in the operation circuit.
According to another embodiment of the invention, the working process and the using method of the power distribution terminal unit are also disclosed:
1) Remote background remote control of the circuit breaker can be performed through the power distribution terminal unit:
the CPU board is provided with a communication interface, a user can be connected to the CPU board of the power distribution terminal unit through a standard communication protocol, a switching-on/off message is sent through communication, and the CPU board can control the contacts of 'CPU switching-off' and 'CPU switching-on' through the processing of the CPU board. As shown in fig. 3, the "in-situ" and "remote" knobs may be considered an alternative option to close contacts by which a user may select whether the power distribution terminal unit is in an "in-situ" or "remote" control mode.
The implementation mode of remote communication remote control brake opening operation is as follows: when the knob is at a distance, the remote contact is closed, the operation power supply passes through the remote contact of the knob positively, then passes through the breaking contact of the CPU, and is output to an external breaking output interface of the power distribution terminal unit, is connected to a breaking coil of the circuit breaker through a prefabricated wire harness, and returns to the negative electricity of the operation power supply through the prefabricated wire harness after passing through the breaking coil. When the CPU opening contact is closed, the opening coil of the breaker is electrified, so that remote communication and remote control opening operation is realized.
The implementation mode of remote communication remote control switching-on operation is as follows: when the knob is in a far place, the remote contact is closed, an operation power supply passes through the remote contact of the knob positively, and then passes through the closing contact of the CPU, and the operation power supply is returned to the negative electricity through the electrical interlocking (for ensuring safety and flexibility, the electrical interlocking contacts are considered to be closed when being short-circuited, a user can feed back and connect the positions of other circuit breakers according to specific electrical interlocking logic, and the electrical interlocking is realized) by the electrical interlocking contacts, and the operation power supply is output to the external closing output of the power distribution terminal unit, is connected to the closing coil of the circuit breaker through the prefabricated wire harness, and passes through the prefabricated wire harness after passing through the closing coil. When the CPU switching-on contact is closed, the switching-on coil of the circuit breaker is electrified, so that remote communication and remote control switching-on operation is realized.
2) In-situ button control of the circuit breaker can be performed by the power distribution terminal unit:
implementation of in-situ opening operation
When the switch-off button of the power distribution terminal unit is pressed, the operating power supply positive electricity is connected to the switch-off button through the switch-off button in situ, is output to an external switch-off output interface of the power distribution terminal unit, is connected to a switch-off coil of the circuit breaker through a prefabricated wire harness, and returns to the operating power supply negative electricity through the prefabricated wire harness. The switch-off button of the distribution terminal unit is pressed, the switch-off coil of the circuit breaker is electrified, and the switch-off of the circuit breaker realizes the on-site switch-off operation.
Implementation mode of in-situ closing operation
When the knob of the power distribution terminal unit is placed in the 'on-site', and the closing button of the power distribution terminal unit is pressed, the operation power supply is positively connected to the closing button through the on-site of the knob, and the operation power supply can be closed through the electrical interlocking (for ensuring the safety and the flexibility, when the electrical interlocking contacts are short-circuited, the user can be according to specific electrical interlocking logic, the position feedback access of other circuit breakers realizes the electrical interlocking) contact, output to the outside of distribution terminal unit and close a floodgate output interface, be connected to the closing coil of circuit breaker through the prefabricated pencil, rethread prefabricated pencil returns to the operation power negative electricity. The switch-on button of the power distribution terminal unit is pressed, the switch-on coil of the circuit breaker is electrified, and the circuit breaker is switched on, so that the on-site switch-on operation is realized.
3) External closing control can be performed through the power distribution terminal unit:
external part brake, external switch-on, external control public terminal are the external contact of distribution terminal unit, can control the circuit breaker that this distribution terminal unit corresponds through increasing external button, or through the relay contact of outside other devices:
implementation of the external gate operation: when the knob is at a distance, the remote contact is closed, the positive electricity of the operation power supply passes through the remote contact of the knob, then passes through the external gate contact, and is output to the external gate-separating output interface of the power distribution terminal unit, is connected to the gate-separating coil of the circuit breaker through the prefabricated wire harness, and returns to the negative electricity of the operation power supply through the prefabricated wire harness after passing through the gate-separating coil. When the external gate contact is closed, the breaker opening coil is electrified, and the breaker opening realizes external opening operation.
Implementation mode of external closing operation: when the knob is in a far place, the remote contact is closed, an operation power supply positively passes through the remote contact of the knob, then passes through an external closing contact, passes through an electric interlocking contact (for ensuring safety and flexibility, when the electric interlocking contact is in short circuit, the electric interlocking contact is considered to be closed, a user can feed back and access the positions of other circuit breakers according to specific electric interlocking logic to realize electric interlocking), and is output to an external closing output of the power distribution terminal unit, the external closing output is connected to a closing coil of the circuit breaker through a prefabricated wire harness, and returns to the negative electricity of the operation power supply through the prefabricated wire harness after passing through the closing coil. When the external closing contact is closed, the closing coil of the circuit breaker is electrified, and the circuit breaker is closed, so that external closing operation is realized.
4) The state of the circuit breaker can be acquired through the power distribution terminal unit:
the voltage and current of the circuit breaker can be acquired through the sampling board of the power distribution terminal unit, and the data is uploaded to the background monitoring system through the CPU board in a communication mode. Meanwhile, the switching-on and switching-off position, the energy storage indication and the tripping indication of the circuit breaker are acquired through the power supply and the operation loop board card, uploaded to the background through the CPU board card in a communication mode, and meanwhile, the state indicator lamp on the connecting board card is controlled through the CPU board card, so that data uploading to the background is achieved. Meanwhile, the power distribution terminal unit is arranged on the cabinet door, the state of the circuit breaker and the working state of the power distribution terminal unit are displayed locally through the indicator lamp, and a user can visually observe the indication of the power distribution terminal unit on the circuit breaker cabinet door, so that the state of the circuit breaker is confirmed.
According to the embodiment, the power distribution terminal unit provided by the invention has the following beneficial effects: general cabinet manufacturer can install circuit breaker divide-shut brake status indicator lamp, divide-shut brake button etc. on the cabinet door, and after having used the distribution terminal unit, accessible integrated knob, divide-shut brake button to and circuit breaker status indicator lamp can reduce cabinet manufacturer and install components such as button pilot lamp alone, practices thrift the cost of manufacture and the time of cubical switchboard. The power distribution terminal unit uses a modularized design and a standardized communication interface, combines with a structural design, ensures miniaturization, has strong reliability and high practicality, can realize plug and play, and meets the use requirement of a distribution network. The power distribution terminal unit is in a plug-in module form, high in integration level, small in size and convenient to install and maintain. The power distribution terminal unit can collect and upload breaker and power state, can digitize the data of the non-intelligent breaker, control and intellectualization, and is more flexible to use by a user, and the user can rapidly and accurately position the power failure and timely cut off the failure. The power distribution terminal unit has special operation loop setting, and integrated configuration of buttons and handles, so that the power distribution terminal unit has various operation modes, such as remote control, external opening and closing and on-site opening and closing, the use modes are various, various on-site uses are satisfied, and the operation and maintenance efficiency of users is improved. In order to ensure the independence of the circuit breaker, the power distribution terminal unit is directly connected to an operation power supply, and even if a CPU board card and a sampling board card are damaged, the normal use of external control and on-site button opening and closing can be ensured.
The above description is only of the preferred embodiments of the present invention and is not intended to limit the present invention, but various modifications and variations can be made to the present invention by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (6)
1. A power distribution terminal unit, comprising:
the connecting plate card is arranged in the box body of the terminal and is used for realizing the connection between the functional modules through the printed circuit board;
the CPU board card is connected to the connecting board card and is used for sending out control instructions or collecting circuit sampling data;
the sampling board is connected to the connecting board and is used for collecting voltage signals and current signals of a main loop of the circuit breaker, converting the voltage signals of the main loop of the circuit breaker into signal quantities through an internal transformer and transmitting the signal quantities to the CPU board through the connecting board;
the power supply and operation circuit board card is connected to the connecting board card and is used for converting a power supply into weak current to supply power for each module connected with the connecting board card and simultaneously conveying the power supply to a power utilization circuit of the circuit breaker;
the operation button at least comprises a breaking button and a closing button, the breaking button and the closing button are arranged on a front panel of the box body, the power supply board card is connected through a prefabricated wire harness, the operation button is connected to an operation loop of a power supply and operation loop board card, and the operation loop is connected with a breaking coil and a closing coil of the circuit breaker.
2. The power distribution terminal unit according to claim 1, wherein the connection board card is further provided with a plurality of status indication lamps, the status indication lamps are exposed on the front panel of the box body, the status indication lamps are further connected with the CPU board card, and control instructions sent by the CPU board card are executed.
3. The power distribution terminal unit of claim 2, wherein the status indicator light is configured to indicate a circuit breaker operating status or a power distribution terminal unit operating status.
4. A power distribution terminal unit according to any one of claims 1 to 3, wherein the operation circuit comprises at least a power supply circuit, a CPU release circuit, a CPU closing circuit, a button release circuit and a button closing circuit, which are connected to an external power supply.
5. The power distribution terminal unit of claim 4, further comprising:
and the control mode switching knob at least comprises an on-site mode and a remote mode, and is connected into the operation loop through an internal wiring harness and connected with a CPU switching-on contact and a CPU switching-off contact.
6. The power distribution terminal unit of claim 4, wherein an electrical interlock circuit and an electrical interlock switch are also provided in the operating circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310675430.2A CN116683646A (en) | 2023-06-08 | 2023-06-08 | Power distribution terminal unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310675430.2A CN116683646A (en) | 2023-06-08 | 2023-06-08 | Power distribution terminal unit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116683646A true CN116683646A (en) | 2023-09-01 |
Family
ID=87785101
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310675430.2A Pending CN116683646A (en) | 2023-06-08 | 2023-06-08 | Power distribution terminal unit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116683646A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117438910A (en) * | 2023-12-21 | 2024-01-23 | 天津航空机电有限公司 | High-density solid-state circuit breaker power distribution device |
-
2023
- 2023-06-08 CN CN202310675430.2A patent/CN116683646A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117438910A (en) * | 2023-12-21 | 2024-01-23 | 天津航空机电有限公司 | High-density solid-state circuit breaker power distribution device |
| CN117438910B (en) * | 2023-12-21 | 2024-04-09 | 天津航空机电有限公司 | High-density solid-state circuit breaker power distribution device |
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