CN211266574U - Single-bus sectionalized operation mode incoming line breaker control power supply system - Google Patents
Single-bus sectionalized operation mode incoming line breaker control power supply system Download PDFInfo
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- CN211266574U CN211266574U CN201921877455.6U CN201921877455U CN211266574U CN 211266574 U CN211266574 U CN 211266574U CN 201921877455 U CN201921877455 U CN 201921877455U CN 211266574 U CN211266574 U CN 211266574U
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Abstract
The utility model discloses a single-bus sectionalized operation mode incoming line circuit breaker control power supply system, the incoming line circuit breaker is an intelligent frame circuit breaker, including a first circuit breaker, a second circuit breaker and a bus tie circuit breaker; the first circuit breaker is used for connecting the first incoming cabinet between the incoming line end and the I-section joint screen bus through a main contact of the first circuit breaker, the second circuit breaker is used for connecting the second incoming cabinet between the incoming line end and the II-section joint screen bus through a main contact of the second circuit breaker, and the bus joint circuit breaker is used for connecting the bus joint incoming cabinet between the I-section joint screen bus and the II-section joint screen bus through a main contact of the bus joint circuit breaker; the control power supply system includes: the UPS comprises a power supply circuit, a UPS power supply and a control device; the incoming line end is connected to the first circuit breaker, the second circuit breaker and the bus tie circuit breaker respectively through the control device after passing through the power circuit and the UPS. The utility model discloses an increase the UPS power at the circuit breaker front end, can supply power for the control power supply alone when losing the electricity.
Description
Technical Field
The utility model relates to a single generating line segmentation operational mode inlet wire circuit breaker control power supply system belongs to the safety guarantee technical field that the power supplies power in succession.
Background
Aiming at a 0.4kV single-bus segmented power supply system, a control power supply of an incoming line breaker of the single-bus segmented power supply system is usually switched by adopting a relay incoming line dual power supply, under the normal condition, a low-voltage side outgoing line side power supply of a body transformer is adopted, and the low-voltage side outgoing line side power supply of the body transformer is automatically switched to the other section of low-voltage side outgoing line side power supply of the transformer after power loss. However, such a situation is dangerous, if a power loss occurs in a whole plant, the two transformers lose power at the same time, the circuit breaker loses the control power supply, and if a sudden power supply occurs, a bus and a load are suddenly electrified. Aiming at the phenomenon, the UPS power supply is added to independently supply power to the control power supply, and even if the phenomenon of power loss of the whole plant occurs, the breaker can be controlled in an emergency mode.
Disclosure of Invention
The utility model aims to provide a: aiming at the technical problem, the control power supply system of the single-bus sectionalized operation mode incoming line breaker is provided, and the UPS power supply is additionally arranged at the front end of the breaker, so that power can be independently supplied to the control power supply when power is lost.
The utility model adopts the technical proposal that: a single-bus sectionalized operation mode incoming line breaker control power supply system is characterized in that the incoming line breaker is an intelligent frame breaker and comprises a first breaker, a second breaker and a bus coupler breaker; the first circuit breaker is used for connecting the first incoming cabinet between the incoming line end and the I-section joint screen bus through a main contact of the first circuit breaker, the second circuit breaker is used for connecting the second incoming cabinet between the incoming line end and the II-section joint screen bus through a main contact of the second circuit breaker, and the bus joint circuit breaker is used for connecting the bus joint incoming cabinet between the I-section joint screen bus and the II-section joint screen bus through a main contact of the bus joint circuit breaker;
the control power supply system includes: the UPS comprises a power supply circuit, a UPS power supply and a control device; the incoming line end is connected to the first circuit breaker, the second circuit breaker and the bus tie circuit breaker respectively through the control device after passing through the power circuit and the UPS.
Further, the control device comprises a first change-over switch, a second change-over switch and a third change-over switch, a first button pair, a second button pair and a third button pair, a remote control system and a fast switching device; the remote control system comprises a first circuit breaker remote control module, a second circuit breaker remote control module and a bus-tie circuit breaker remote control module; the quick-switching device comprises a first circuit breaker quick-switching module, a second circuit breaker quick-switching module and a bus-coupled circuit breaker quick-switching module;
after passing through a power circuit and a UPS (uninterrupted power supply), the incoming line end is connected to the first circuit breaker through the three-way output of the first change-over switch respectively through the first button pair, the first circuit breaker fast switching module and the first circuit breaker remote control module; the three-way output of the second change-over switch is respectively connected to the second circuit breaker through the second button pair, the second circuit breaker fast switching module and the second circuit breaker remote control module; and three paths of outputs through the third change-over switch are respectively connected to the bus tie circuit breaker through the third button pair, the third circuit breaker fast switching module and the third circuit breaker remote control module.
Further, the control device also comprises a first status indicator light, a second status indicator light and a third status indicator light; the first state indicator lamp, the second state indicator lamp and the third state indicator lamp respectively comprise indicator lamps with two colors, are respectively connected with state signal output ends of a first circuit breaker, a second circuit breaker and a bus tie circuit breaker, and are used for switching on the indicator lamps with corresponding colors when the first circuit breaker, the second circuit breaker and the bus tie circuit breaker are switched on or switched off.
Further, the two color indicator lights of the first status indicator light, the second status indicator light and the third status indicator light are respectively a red indicator light and a green indicator light; the red indicator light is used for switching on when a circuit breaker, No. two circuit breakers and a bus tie circuit breaker are switched on, and the green indicator light is used for switching on when a circuit breaker, No. two circuit breakers and a bus tie circuit breaker are switched off.
Further, the control device also comprises a first fault indicator light, a second fault indicator light and a third fault indicator light; first fault indicator, second fault indicator and third fault indicator connect the fault signal output of a circuit breaker, No. two circuit breakers and female circuit breaker for switch on when a circuit breaker, No. two circuit breakers and female circuit breaker break down respectively.
Further, the fault indicator lamp is a yellow indicator lamp.
Further, circuit breaker, No. two circuit breakers and female circuit breaker that allies oneself with all include voltage sampling module for the voltage that is connected to behind inlet wire end, the I section allies oneself with screen generating line and the II section allies oneself with the screen generating line to circuit breaker, No. two circuit breakers and the female circuit breaker that allies oneself with respectively takes a sample.
Furthermore, the quick switching device also comprises a voltage data acquisition module; the voltage data acquisition module is connected with the voltage sampling module through RS485 and used for acquiring voltage sampling data of the incoming line circuit breaker.
Further, the control power supply system also comprises a plurality of first current transformers; the first current transformer is used for being connected with main contacts of the first circuit breaker, the second circuit breaker and the bus coupler circuit breaker in series respectively, and simultaneously outputs the generated current to the first incoming line cabinet, the second incoming line cabinet and the bus coupler cabinet to form a current loop respectively.
Furthermore, the fast switching device also comprises a current data acquisition module; the control power supply system further comprises a plurality of second current transformers which are respectively connected with the main coils of the first circuit breaker and the second circuit breaker in series and output generated currents to a current data sampling module of the quick switching device.
To sum up, owing to adopted above-mentioned technical scheme, the beneficial effects of the utility model are that:
the utility model discloses an increase the UPS power at the circuit breaker front end, can supply power for the control power supply alone when losing the electricity.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.
Fig. 1a, 1b, 1c are the schematic diagram of the single bus segment operation mode incoming line circuit breaker control power supply system of the present invention operating in single bus segment.
Fig. 2 is a schematic diagram of the power control system of the present invention.
Fig. 3a, 3b, 3c are the schematic diagrams of the incoming line circuit breaker of the present invention.
Fig. 4a, 4b, 4c are schematic diagrams of the fast cutting device of the present invention.
Fig. 5 is the wiring schematic diagram of the temperature and humidity sensor of the present invention.
Detailed Description
The features and properties of the present invention are described in further detail below with reference to examples.
Example 1
As shown in fig. 1a, 1b, and 1c, in the incoming line breaker control power supply system of the single-bus sectionalized operation mode provided in this embodiment, the incoming line breaker is an intelligent frame breaker, and includes a first breaker 1QF, a second breaker 2QF, and a bus tie breaker 3 QF; the first circuit breaker 1QF is used for connecting the first wire inlet cabinet between a wire inlet end and an I-section joint screen bus through a main contact of the first circuit breaker, the second circuit breaker 2QF is used for connecting the second wire inlet cabinet between the wire inlet end and an II-section joint screen bus through a main contact of the second circuit breaker, and the bus joint circuit breaker 3QF is used for connecting the bus joint wire inlet cabinet between the I-section joint screen bus and the II-section joint screen bus through a main contact of the bus joint circuit breaker;
as shown in fig. 2, the control power supply system includes: the UPS comprises a power supply circuit, a UPS power supply and a control device; the inlet wire end is respectively connected to a first breaker 1QF, a second breaker 2QF and a bus tie breaker 3QF through a control device after passing through a power circuit and a UPS power supply. That is to say, this embodiment is applied to single generating line segmentation operation, allies oneself with the screen generating line including I section antithetical couplet, II section antithetical couplet, and through closing and the separating brake of control inlet wire circuit breaker, make inlet wire cabinet, No. two inlet wire cabinets and mother ally oneself with the cabinet and be connected to single generating line and supply power. In order to meet the requirement that two sections of transformers which can be operated in a single bus in a segmented mode can be connected for use, the power circuit comprises a first input end, a second input end and an intermediate relay KA; the first input end (A1, N1) and the second input end (A2, N2) comprise live wire and neutral wire, and the main coil of the intermediate relay KA is connected between the live wire and the neutral wire of the first input end; a normally open contact of the intermediate relay KA is connected between the first input end and the input end of the UPS power supply, and a normally closed contact is connected between the second input end and the input end of the UPS power supply. The power circuit controls the first input end or the second input end to be communicated by adopting the on-off of the intermediate relay KA, so that the power circuit is connected with one of the two sections of transformers, and the switching of the two sections of transformers is realized.
As shown in fig. 3a, 3b, 3c, 4a, 4b, 4c, the control device includes a first transfer switch 1SA, a second transfer switch 2SA, and a third transfer switch 3SA, a first button pair (1SS-1SF), a second button pair (2SS-2SF), and a third button pair (3SS-3SF), a remote control system DCS, and a fast switching device; the remote control system DCS comprises a first circuit breaker remote control module, a second circuit breaker remote control module and a bus-tie circuit breaker remote control module; the quick-switching device comprises a first circuit breaker quick-switching module, a second circuit breaker quick-switching module and a bus-coupled circuit breaker quick-switching module;
after passing through a power circuit and a UPS (uninterrupted Power supply), the incoming line end is connected to a first breaker 1QF through three paths of output of a first change-over switch 1SA respectively through a first button pair (1SS-1SF), a first breaker fast switching module and a first breaker remote control module; the three-way output of the second change-over switch is respectively connected to the second breaker 2QF through a second button pair (2SS-2SF), a second breaker fast switching module and a second breaker remote control module; and three paths of outputs of the third change-over switch are respectively connected to the 3QF of the bus tie circuit breaker through a third button pair (3SS-3SF), a third circuit breaker fast switching module and a third circuit breaker remote control module.
That is to say, the first change-over switch 1SA, the second change-over switch 2SA and the third change-over switch 3SA are single-pole triple-throw switches, and manual switching-on and switching-off, automatic switching-on and switching-off, and remote switching-on and switching-off are respectively realized by turning on the corresponding button pair, the fast switching module and the remote control module. In fact, the first transfer switch 1SA, the second transfer switch 2SA and the third transfer switch 3SA may also be single-pole four-throw switches, which, in addition to being used to conduct the corresponding button pair, the fast-switching module and the remote control module, also include a suspended gear for stopping the corresponding incoming line breaker.
The control device further comprises first status indicator lamps (1HR, 1HG), second status indicator lamps (2HR, 2HG) and third status indicator lamps (3HR, 3 HG); the first state indicating lamp (1HR, 1HG), the second state indicating lamp (2HR, 2HG) and the third state indicating lamp (3HR, 3HG) all include the indicating lamp of two kinds of colours to connect the state signal output part of a circuit breaker 1QF, No. two circuit breakers 2QF and female circuit breaker 3QF respectively, be used for when a circuit breaker 1QF, No. two circuit breakers 2QF and female circuit breaker 3QF close or open a floodgate, switch on the indicating lamp of corresponding colour.
Generally, the two color indicator lamps of the first status indicator lamp (1HR, 1HG), the second status indicator lamp (2HR, 2HG) and the third status indicator lamp (3HR, 3HG) are respectively a red indicator lamp and a green indicator lamp; the red indicating lamp is used for conducting when a first breaker 1QF, a second breaker 2QF and a mother-connected breaker 3QF are switched on, and the green indicating lamp is used for conducting when the first breaker 1QF, the second breaker 2QF and the mother-connected breaker 3QF are switched off.
The control device also comprises a first fault indicator lamp 1HY, a second fault indicator lamp 2HY and a third fault indicator lamp 3 HY; the first fault indicating lamp 1HY, the second fault indicating lamp 2HY and the third fault indicating lamp 3HY are respectively connected with fault signal output ends of the first circuit breaker 1QF, the second circuit breaker 2QF and the mother circuit breaker 3QF and used for being conducted when the first circuit breaker 1QF, the second circuit breaker 2QF and the mother circuit breaker 3QF have faults.
For distinguishing the colors of the first status indicator lamp (1HR, 1HG), the second status indicator lamp (2HR, 2HG) and the third status indicator lamp (3HR, 3HG), the fault indicator lamp is a yellow indicator lamp.
No. 1QF of circuit breaker, No. 2QF of circuit breaker and female circuit breaker 3QF of antithetical couplet all include voltage sampling module (the interface is U1, U2, U3) for respectively to circuit breaker 1QF, No. 2QF of circuit breaker and female circuit breaker 3QF of antithetical couplet be connected to the inlet wire end, I section antithetical couplet screen generating line and II section antithetical couplet the voltage behind the screen generating line and sample.
The quick switching device also comprises a voltage data acquisition module; the voltage data acquisition module is connected with the voltage sampling module through RS485 and used for acquiring voltage sampling data of the incoming line circuit breaker.
The control power supply system also comprises a plurality of first current transformers (1LHa, 1LHb, 1LHc, 2LHa, 2LHb, 2LHc, 3LHa, 31LHb, 3 LHc); the first current transformers (1LHa, 1LHb, 1LHc, 2LHa, 2LHb, 2LHc, 3LHa, 31LHb and 3LHc) are respectively connected in series with main contacts of a first breaker 1QF, a second breaker 2QF and a bus tie breaker 3QF, and output generated current to the first incoming cabinet, the second incoming cabinet and the bus tie cabinet to form current loops respectively.
The quick switching device also comprises a current data acquisition module; the control power supply system further comprises a plurality of second current transformers (1LHa1, 2LHa1) which are respectively connected with the primary coils of the first breaker 1QF and the second breaker 2QF in series and output generated currents to a current data sampling module of the quick-switching device.
The quick switching device further comprises a signal feedback module for receiving state signals and fault signals of the first breaker 1QF, the second breaker 2QF and the bus tie breaker 3 QF. According to the above, the first circuit breaker fast switching module, the second circuit breaker fast switching module and the bus tie circuit breaker fast switching module of the fast switching device can automatically control the first circuit breaker 1QF, the second circuit breaker 2QF and the bus tie circuit breaker 3QF respectively based on the incoming line circuit breaker state signal and the fault signal acquired by the signal feedback module, the voltage sampling data acquired by the voltage data sampling module and the current sampling data acquired by the current data sampling module.
In addition, as shown in fig. 5, a temperature and humidity sensor, a heat dissipation motor, and the like are generally provided for the first incoming line cabinet, the second incoming line cabinet, and the bus coupler cabinet, and are all synchronously connected with the closing and closing of the corresponding incoming line breaker.
The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.
Claims (10)
1. A single-bus sectionalized operation mode incoming line breaker control power supply system is characterized in that the incoming line breaker is an intelligent frame breaker and comprises a first breaker, a second breaker and a bus coupler breaker; the first circuit breaker is used for connecting the first incoming cabinet between the incoming line end and the I-section joint screen bus through a main contact of the first circuit breaker, the second circuit breaker is used for connecting the second incoming cabinet between the incoming line end and the II-section joint screen bus through a main contact of the second circuit breaker, and the bus joint circuit breaker is used for connecting the bus joint incoming cabinet between the I-section joint screen bus and the II-section joint screen bus through a main contact of the bus joint circuit breaker;
the control power supply system includes: the UPS comprises a power supply circuit, a UPS power supply and a control device; the incoming line end is connected to the first circuit breaker, the second circuit breaker and the bus tie circuit breaker respectively through the control device after passing through the power circuit and the UPS.
2. The single bus sectionalized operation mode incoming line breaker control power supply system of claim 1, wherein said control device comprises a first transfer switch, a second transfer switch and a third transfer switch, a first button pair, a second button pair and a third button pair, a remote control system and a fast switching device; the remote control system comprises a first circuit breaker remote control module, a second circuit breaker remote control module and a bus-tie circuit breaker remote control module; the quick-switching device comprises a first circuit breaker quick-switching module, a second circuit breaker quick-switching module and a bus-coupled circuit breaker quick-switching module;
after passing through a power circuit and a UPS (uninterrupted power supply), the incoming line end is connected to the first circuit breaker through the three-way output of the first change-over switch respectively through the first button pair, the first circuit breaker fast switching module and the first circuit breaker remote control module; the three-way output of the second change-over switch is respectively connected to the second circuit breaker through the second button pair, the second circuit breaker fast switching module and the second circuit breaker remote control module; and three paths of outputs through the third change-over switch are respectively connected to the bus tie circuit breaker through the third button pair, the third circuit breaker fast switching module and the third circuit breaker remote control module.
3. The single bus section operation mode incoming line breaker control power supply system of claim 2, wherein the control device further comprises a first status indicator light, a second status indicator light, and a third status indicator light; the first state indicator lamp, the second state indicator lamp and the third state indicator lamp respectively comprise indicator lamps with two colors, are respectively connected with state signal output ends of a first circuit breaker, a second circuit breaker and a bus tie circuit breaker, and are used for switching on the indicator lamps with corresponding colors when the first circuit breaker, the second circuit breaker and the bus tie circuit breaker are switched on or switched off.
4. The single-bus section operation mode incoming line breaker control power supply system of claim 3, wherein the two color indicator lights of the first status indicator light, the second status indicator light and the third status indicator light are a red indicator light and a green indicator light respectively; the red indicator light is used for switching on when a circuit breaker, No. two circuit breakers and a bus tie circuit breaker are switched on, and the green indicator light is used for switching on when a circuit breaker, No. two circuit breakers and a bus tie circuit breaker are switched off.
5. The single bus section mode of operation incoming line breaker control power supply system of claim 4, wherein said control means further comprises a first fault indicator light, a second fault indicator light, and a third fault indicator light; first fault indicator, second fault indicator and third fault indicator connect the fault signal output of a circuit breaker, No. two circuit breakers and female circuit breaker for switch on when a circuit breaker, No. two circuit breakers and female circuit breaker break down respectively.
6. The single bus section mode of operation incoming line breaker control power supply system of claim 5, wherein the fault indicator light is a yellow indicator light.
7. The single-bus sectional operation mode incoming line breaker control power supply system of claim 2, wherein the first breaker, the second breaker and the bus tie breaker each include a voltage sampling module for sampling voltages after the first breaker, the second breaker and the bus tie breaker are connected to the incoming line end, the I-section link bus and the II-section link bus respectively.
8. The single bus sectionalized operation mode incoming line breaker control power supply system of claim 7, wherein the fast switching device further comprises a voltage data acquisition module; the voltage data acquisition module is connected with the voltage sampling module through RS485 and used for acquiring voltage sampling data of the incoming line circuit breaker.
9. The single bus sectionalized operation mode incoming line breaker control power supply system of claim 2, further comprising a plurality of first current transformers; the first current transformer is used for being connected with main contacts of the first circuit breaker, the second circuit breaker and the bus coupler circuit breaker in series respectively, and simultaneously outputs the generated current to the first incoming line cabinet, the second incoming line cabinet and the bus coupler cabinet to form a current loop respectively.
10. The single bus sectionalized operation mode incoming line breaker control power supply system of claim 9, wherein the fast switching device further comprises a current data acquisition module; the control power supply system further comprises a plurality of second current transformers which are respectively connected with the main coils of the first circuit breaker and the second circuit breaker in series and output generated currents to a current data sampling module of the quick switching device.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921877455.6U CN211266574U (en) | 2019-11-04 | 2019-11-04 | Single-bus sectionalized operation mode incoming line breaker control power supply system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921877455.6U CN211266574U (en) | 2019-11-04 | 2019-11-04 | Single-bus sectionalized operation mode incoming line breaker control power supply system |
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| CN211266574U true CN211266574U (en) | 2020-08-14 |
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| CN201921877455.6U Active CN211266574U (en) | 2019-11-04 | 2019-11-04 | Single-bus sectionalized operation mode incoming line breaker control power supply system |
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