CN218940752U - Control loop dual-power switching system - Google Patents
Control loop dual-power switching system Download PDFInfo
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- CN218940752U CN218940752U CN202221132709.3U CN202221132709U CN218940752U CN 218940752 U CN218940752 U CN 218940752U CN 202221132709 U CN202221132709 U CN 202221132709U CN 218940752 U CN218940752 U CN 218940752U
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- control loop
- power supply
- breaker
- direct current
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
- Y02B70/30—Systems integrating technologies related to power network operation and communication or information technologies for improving the carbon footprint of the management of residential or tertiary loads, i.e. smart grids as climate change mitigation technology in the buildings sector, including also the last stages of power distribution and the control, monitoring or operating management systems at local level
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S20/00—Management or operation of end-user stationary applications or the last stages of power distribution; Controlling, monitoring or operating thereof
- Y04S20/20—End-user application control systems
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Abstract
The utility model discloses a control loop dual-power switching system which comprises a first alternating current breaker, a second alternating current breaker, a solid-state relay, a first direct current breaker, a second direct current breaker, a first distributed power supply, a second distributed power supply, wherein the output ends of the first alternating current breaker and the second alternating current breaker are electrically connected with the solid-state relay, the output end of the solid-state relay is electrically connected with the first direct current breaker and the second direct current breaker, the output end of the first direct current breaker is electrically connected with the first distributed power supply, and the output end of the second direct current breaker is electrically connected with the second distributed power supply.
Description
Technical Field
The utility model relates to the technical field of power distribution, in particular to a control loop dual-power switching system.
Background
The secondary protection power supply of the power distribution cabinet in the current practical application is generally powered by a direct current screen or a low-voltage alternating current power supply, and generally, a secondary side power supply can be used for battery power supply and the alternating current power supply is used for charging a direct current screen battery, so that the problem that the high-voltage cabinet loses microcomputer protection and cannot normally switch on or switch off operation due to the fact that maintenance is lacking in the actual work of a plurality of existing power distribution rooms and the secondary power supply loses power due to battery failure, alternating current power supply accidents and the like is frequently caused.
In view of the foregoing, there is a need for a control loop dual power switching system that overcomes the shortcomings of the prior art.
Disclosure of Invention
The utility model provides a control loop dual-power switching system aiming at solving the problems.
In order to achieve the above purpose, the present utility model provides the following technical solutions: the control loop dual-power switching system comprises a first alternating current breaker, a second alternating current breaker, a solid-state relay, a first direct current breaker, a second direct current breaker, a first distributed power supply and a second distributed power supply, wherein the output ends of the first alternating current breaker and the second alternating current breaker are electrically connected with the solid-state relay, the output end of the solid-state relay is electrically connected with the first direct current breaker and the second direct current breaker, the output end of the first direct current breaker is electrically connected with the first distributed power supply, and the output end of the second direct current breaker is electrically connected with the second distributed power supply;
the control loop dual-power switching system comprises a dual-path alternating-current power supply, wherein the first alternating-current circuit breaker is arranged on a first power supply main loop of the control loop dual-power switching system, and the second alternating-current circuit breaker is arranged on a second power supply main loop of the control loop dual-power switching system.
Preferably, the output end of the first distributed power supply is electrically connected with a first direct-current voltage monitor, and the output end of the second distributed power supply is electrically connected with a second direct-current voltage monitor.
Preferably, the output ends of the first direct current voltage monitor and the second direct current voltage monitor are electrically connected with a direct current dual-power-supply executing mechanism.
Preferably, the control loop dual-power switching system further comprises a control circuit for controlling the first direct current breaker and the second direct current breaker to automatically switch, and the control circuit comprises a first control loop, a second control loop, a third control loop and a fourth control loop.
Preferably, the first direct current voltage monitor is arranged on the first control loop, the second direct current voltage monitor is arranged on the second control loop, the third control loop comprises a CYJ relay, a first time relay KT1 and a second time relay KT2 which are connected in parallel, a normally open contact of the first direct current voltage monitor is connected in series with the first time relay KT1, and a delay closing contact of the first time relay KT1 is connected in series with the CYJ relay; and the fourth control loop comprises a BYJ relay, and a normally open contact of the second direct-current voltage monitor, a delay closing node of the second time relay KT2 and a normally closed node of the CYJ relay are respectively connected in series in the fourth control loop.
The utility model has the beneficial effects that: the high-capacity PT of the high-voltage PT cabinet is used for common alternating current power supply, so that when the high-voltage side is electrified, the secondary side power supply is never powered off, and if the high-voltage PT fails, the alternating current power supply in the power distribution room is used as a standby alternating current power supply for input; the alternating current power supply and the storage battery power supply can be converted into needed high-voltage secondary side power supply through the first distributed power supply and the second distributed power supply, so that the secondary power supply of the control loop of the high-voltage cabinet is realized, the automatic switching of two paths of alternating current and two paths of battery power supplies is finally realized through the double-power-supply switching system of the control loop, the reliable power supply operation of the secondary power supply of the high-voltage cabinet is ensured, the use time of the high-voltage secondary power supply can be greatly prolonged by the double-path storage battery when the two paths of alternating current loops simultaneously fail, the problems of power failure of the secondary power supply, incapability of normal switching on and off operation and the like are effectively prevented, the system principle is scientific and reasonable, the practicability is high, and the system has certain use value and popularization value.
Drawings
Fig. 1 is a schematic block diagram of a system architecture of the present utility model.
Fig. 2 is a schematic diagram of a system circuit according to the present utility model.
Fig. 3 is an enlarged schematic view of a portion a in fig. 2.
In the figure: 1-first alternating current circuit breaker, 2-second alternating current circuit breaker, 3-solid state relay, 4-first direct current circuit breaker, 5-second direct current circuit breaker, 6-first distributed power supply, 7-second distributed power supply, 8-first direct current voltage monitor, 9-second direct current voltage monitor, 10-direct current dual power supply actuating mechanism.
Detailed Description
As shown in fig. 1, 2 and 3, a control loop dual-power switching system comprises a first ac breaker 1, a second ac breaker 2, a solid-state relay 3, a first dc breaker 4, a second dc breaker 5, a first distributed power supply 6 and a second distributed power supply 7, wherein the output ends of the first ac breaker 1 and the second ac breaker 2 are electrically connected to the solid-state relay 3, the output end of the solid-state relay 3 is electrically connected to the first dc breaker 4 and the second dc breaker 5, the output end of the first dc breaker 4 is electrically connected to the first distributed power supply 6, and the output end of the second dc breaker 5 is electrically connected to the second distributed power supply 7;
the control loop dual-power switching system comprises a dual-path alternating-current power supply, a first alternating-current circuit breaker 1 is arranged on a first power supply main loop of the control loop dual-power switching system, and a second alternating-current circuit breaker 2 is arranged on a second power supply main loop of the control loop dual-power switching system.
Further, the first distributed power supply 6 and the second distributed power supply 7 are FB-800 distributed power supplies.
Further, the output end of the first distributed power supply 6 is electrically connected with a first direct current voltage monitor 8, the first direct current voltage monitor 8 is used for detecting the incoming line voltage of the first power supply, the output end of the second distributed power supply 7 is electrically connected with a second direct current voltage monitor 9, and the second direct current voltage monitor 9 is used for detecting the incoming line voltage of the second power supply.
Further, the output ends of the first dc voltage monitor 8 and the second dc voltage monitor 9 are electrically connected to a dc dual-power actuator 10.
Further, the control loop dual-power switching system further comprises a control circuit for controlling the first direct current breaker 4 and the second direct current breaker 5 to automatically switch, and the control circuit comprises a first control loop, a second control loop, a third control loop and a fourth control loop.
Further, the first direct current voltage monitor 8 is arranged on the first control loop, the second direct current voltage monitor 9 is arranged on the second control loop, the third control loop comprises a CYJ relay, a first time relay KT1 and a second time relay KT2 which are connected in parallel, a normally open contact of the first direct current voltage monitor 8 is connected in series with the first time relay KT1, and a delay closing contact of the first time relay KT1 is connected in series with the CYJ relay; and the fourth control loop comprises a BYJ relay, and a normally open contact of the second direct-current voltage monitor 9, a delay closing node of the second time relay KT2 and a normally closed node of the CYJ relay are respectively connected in series in the fourth control loop.
The working principle of the utility model is as follows: when the control loop dual-power switching system is used, the control loop dual-power switching system is installed in a PT cabinet instrument room of a high-voltage power distribution cabinet, a dual-path alternating-current power supply is firstly provided, a first distributed power supply 6 and a second distributed power supply 7 (FB-800 direct-current distributed power supply) are charged through the control loop dual-power switching system, the two paths of alternating-current power supplies are respectively output by a high-voltage PT and a lighting loop power supply of the power distribution room, a common standby input is carried out, and the two loops are automatically switched through a high-current solid-state relay 3 in the control loop dual-power switching system; the outlet side of the solid state relay 3 is connected with two FB-800 distributed power supplies (a first distributed power supply 6 and a second distributed power supply 7), when the distributed power supplies are connected with alternating current, the alternating current is used for converting the alternating current into direct current for output, and when the alternating current power supply is in power failure, the storage battery is used for converting the alternating current into direct current for output; two direct current outputs of two distributed power supplies (a first distributed power supply 6 and a second distributed power supply 7) are output finally after passing through the control loop dual-power supply switching system, so that two alternating current loops are achieved, the four-way power supply of two storage battery loops guarantees the use of the high-voltage secondary side power supply, and the control loop dual-power supply switching system can generate an alarm output and passive feedback when any side loses power or is in an accident.
The foregoing description of the preferred embodiments of the utility model is not intended to be limiting, but rather is intended to cover all modifications, equivalents, or alternatives falling within the spirit and principles of the utility model.
Claims (6)
1. The control loop dual-power switching system comprises a first alternating current breaker (1), a second alternating current breaker (2), a solid-state relay (3), a first direct current breaker (4), a second direct current breaker (5), a first distributed power supply (6) and a second distributed power supply (7), and is characterized in that the output ends of the first alternating current breaker (1) and the second alternating current breaker (2) are electrically connected with the solid-state relay (3), the output end of the solid-state relay (3) is electrically connected with the first direct current breaker (4) and the second direct current breaker (5), the output end of the first direct current breaker (4) is electrically connected with the first distributed power supply (6), and the output end of the second direct current breaker (5) is electrically connected with the second distributed power supply (7);
the control loop dual-power switching system comprises a dual-path alternating-current power supply, wherein a first alternating-current circuit breaker (1) is arranged on a first power supply main loop of the control loop dual-power switching system, and a second alternating-current circuit breaker (2) is arranged on a second power supply main loop of the control loop dual-power switching system.
2. The control loop dual power switching system according to claim 1, wherein the output end of the first distributed power supply (6) is electrically connected to a first direct current voltage monitor (8), and the output end of the second distributed power supply (7) is electrically connected to a second direct current voltage monitor (9).
3. The control loop dual power switching system according to claim 2, wherein the output ends of the first direct current voltage monitor (8) and the second direct current voltage monitor (9) are electrically connected with a direct current dual power executing mechanism (10).
4. The control loop dual power switching system according to claim 1, further comprising a control circuit for controlling the automatic switching of the first dc breaker (4) and the second dc breaker (5), the control circuit comprising a first control loop, a second control loop, a third control loop, and a fourth control loop.
5. The control loop dual-power switching system according to claim 2, wherein the first direct-current voltage monitor (8) is arranged on the first control loop, a normally open contact of the first direct-current voltage monitor (8) is connected in series with the first time relay KT1, a delay closing contact of the first time relay KT1 is connected in series with the CYJ relay, the second direct-current voltage monitor (9) is arranged on the second control loop, and a normally open contact of the second direct-current voltage monitor (9) and a delay closing node of the second time relay KT2 and a normally closed node of the CYJ relay are respectively connected in series in the fourth control loop.
6. The dual power switching system of claim 4, wherein the third control loop comprises a CYJ relay, a first time relay KT1, a second time relay KT2 connected in parallel, and the fourth control loop comprises a BYJ relay.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221132709.3U CN218940752U (en) | 2022-05-11 | 2022-05-11 | Control loop dual-power switching system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221132709.3U CN218940752U (en) | 2022-05-11 | 2022-05-11 | Control loop dual-power switching system |
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| Publication Number | Publication Date |
|---|---|
| CN218940752U true CN218940752U (en) | 2023-04-28 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202221132709.3U Active CN218940752U (en) | 2022-05-11 | 2022-05-11 | Control loop dual-power switching system |
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| CN (1) | CN218940752U (en) |
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- 2022-05-11 CN CN202221132709.3U patent/CN218940752U/en active Active
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