CN209170039U - A kind of automatic redundancy zero propagation switching system of two dc power supply - Google Patents
A kind of automatic redundancy zero propagation switching system of two dc power supply Download PDFInfo
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- CN209170039U CN209170039U CN201822274916.2U CN201822274916U CN209170039U CN 209170039 U CN209170039 U CN 209170039U CN 201822274916 U CN201822274916 U CN 201822274916U CN 209170039 U CN209170039 U CN 209170039U
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Abstract
The utility model discloses a kind of automatic redundancy zero propagation switching systems of two dc power supply, including bus, the bus includes control bus anode, closing bus bar anode and bus negative terminal, the bus is divided into the first bus section, busbar section and the second bus section, busbar section, and each bus section, busbar section is respectively corresponded equipped with combined floodgate output module, control output module and dropping equipment；Each bus section, busbar section has also respectively corresponded one group of AC/DC conversion module and battery, and the outlet line of the anode of the DC output end of the AC/DC conversion module is equipped with diode, and the conducting direction of the diode is by AC/DC conversion module to bus section, busbar section；Also it is connected by busbar breaker between two bus section, busbar sections.The utility model realizes automatic switchover and zero time delay, and circulation situation when battery parallel connection is not present, and method is simple, safe and reliable.
Description
Technical field
The utility model relates to a kind of power trains to unify the two dc power supply in the DC power supply system of secondary device
Switching system.
Background technique
Protective device, automatic control device, signalling arrangement, monitoring device, accident in electrical primary and secondary device are shone
Bright, emergency power supply, breaking-closing operating of breaker etc., requiring offer DC power supply could work normally.DC power supply is one
A independent power-supply system, it is not influenced by generator, station service and system operation mode, and is stopped in external ac power source
In the case where electricity, continued to provide DC power supply by backup power supply (battery).
Current medium and small project project, the DC power system of an electrical secondary device are using one group of battery mostly
DC power system.Such system is constituted simply, low in cost, but any one functional module breaks down, and has
It is out of service to may cause whole system, reliability is lower.Such system can be only applied to the middle-size and small-size of second level and three stage loads
In engineering project, even if interruption of power supply, also it is unlikely to cause great economy or casualties.
Since the reliability of traditional single set DC power system is lower, in some important loads such as first order load,
It generally requires using the higher DC power system of reliability.The major way for improving reliability is to provide redundant configuration, when it
In any set of system break down when, be quickly switched into another set of system to restore electricity, reliability significantly improves.But
Handoff functionality is automatically or manually controlled by switch manual control or electromagnetic type relay, both switching modes are all deposited
The case where system power supply interrupts.If encountering the system failure in handoff procedure, protective relaying device is by tripping, it will occurs
The major accidents such as system failure expansion, equipment burnout.Even and relay automatically switch, the break period also have 30ms with
On, manual mode switching time is generally second grade or longer.In certain extreme cases, some engineering operations personnel are in order to guarantee
Uninterrupted power supply can first close the network interconnecting circuit between bus, then disconnect the switch of failure side, and it is short to there are two group storage batteries at this time
The situation of time parallel connection will form very big circulation, easily battery caused to overheat because the voltage of two group storage batteries is different
The even danger of explosion.Therefore, DC power system in the prior art can not meet important negative under the premise that security is guaranteed
Requirement of the lotus to power interruption time.
Utility model content
The utility model proposes a kind of automatic redundancy zero propagation switching system of two dc power supply, its object is to: it is protecting
Under the premise of demonstrate,proving safety, DC power supply switching is avoided to cause power failure.
Technical solutions of the utility model are as follows:
A kind of automatic redundancy zero propagation switching system of two dc power supply, including bus, the bus include control bus just
End, closing bus bar anode and bus negative terminal, the bus are divided into the first bus section, busbar section and the second bus section, busbar section, and each bus section, busbar section respectively corresponds
Equipped with combined floodgate output module, control output module and dropping equipment, the control of bus section, busbar section is female where the dropping equipment is connected to
Between line anode and closing bus bar anode, the closing bus bar anode and bus negative terminal of the combined floodgate output module and place bus section, busbar section
It is connected, the control output module is connected with the control bus anode of place bus section, busbar section and bus negative terminal；
Each bus section, busbar section has also respectively corresponded one group of AC/DC conversion module and battery, and the AC/DC conversion module is used for will
Alternating current is converted to direct current, and the anode of the DC output end of the AC/DC conversion module and the combined floodgate of corresponding bus section, busbar section are female
Line anode is connected, cathode is connected with the bus negative terminal of corresponding bus section, busbar section, and the AC/DC conversion module is connected to bus section, busbar section
Route be equipped with the first breaker, the anode of the DC output end of the AC/DC conversion module is connected to the first breaker
Diode is additionally provided on route, the conducting direction of the diode is by AC/DC conversion module to bus section, busbar section；The battery
Positive and negative anodes are correspondingly connected with by the positive and negative anodes of the second breaker and the DC output end of the AC/DC conversion module；
The closing bus bar anode and bus negative terminal of first bus section, busbar section and the closing bus bar anode and bus of the second bus section, busbar section are negative
Also pass through the corresponding connection of busbar breaker between end.
As further improvement of the utility model: the AC/DC conversion module is also correspondingly provided with exchange switching device, institute
The ac input end for stating AC/DC conversion module is connected with switching device output end is exchanged, and the exchange switching device has the
One ac input end and the second ac input end.
As further improvement of the utility model: further including the insulating monitoring module of ground connection, the insulating monitoring module
Side is connected with the control bus anode of the first bus section, busbar section and closing bus bar anode, the control of the other side and the second bus section, busbar section
Bus anode and closing bus bar anode are connected.
As further improvement of the utility model: corresponding each bus section, busbar section further includes be connected to AC/DC conversion module straight
The first voltage detection device between the positive electrode and negative electrode of output end is flowed, and is mounted on the direct current output of AC/DC conversion module
First current detection means of the negative output line road at end.
As further improvement of the utility model: corresponding each bus section, busbar section, further include be connected to the anode of battery with it is negative
Second voltage detection device between pole, and it is mounted on the second current detection means of the negative output line road of battery.
As further improvement of the utility model: the busbar breaker includes concatenated first busbar breaker and
Two busbar breakers.
Compared with the existing technology, the utility model has the positive effect that: (1) bus is divided into two by the utility model
Section, each paragraph respectively corresponds one group of DC power supply, and power-type diode is arranged in DC output end, then pass through mother open circuit
Device is in parallel by two groups of charging modules, and when work, only one group of power supply powering load in two groups of power supplys, another group of power supply is in heat
Stand-by state, when wherein one group of power supply decompression, another group of powering load that can contribute automatically, when realizing automatic switchover and zero
Prolong, and circulation situation when battery parallel connection is not present, method is simple, safe and reliable；(2) due to being provided with power-type two
Pole pipe can not form circulation between two group storage batteries, improve the safety coefficient of system；(3) this programme method of operation is flexible, closes
When busbar breaker, can be used as the use of redundancy-type power-supply system can be used as two sets and is completely independent after disconnecting busbar breaker
DC power-supply system use.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the utility model switching system.
Specific embodiment
The technical solution that according to the present invention will be described in detail below with reference to the accompanying drawings:
Such as Fig. 1, a kind of automatic redundancy zero propagation switching system of two dc power supply, including bus, the bus include control
Bus anode, closing bus bar anode and bus negative terminal.
The bus is divided into the first bus section, busbar section 100 and the second bus section, busbar section 200, and each bus section, busbar section, which respectively corresponds, is equipped with output of closing a floodgate
Module 1, control output module 2 and dropping equipment 3, the control bus anode of bus section, busbar section where the dropping equipment 3 is connected to
Between closing bus bar anode, the combined floodgate output module 1 is connected with the closing bus bar anode of place bus section, busbar section and bus negative terminal,
The control output module 2 is connected with the control bus anode of place bus section, busbar section and bus negative terminal.
Each bus section, busbar section has also respectively corresponded one group of AC/DC conversion module 4 and battery 5, and the AC/DC conversion module 4 is used
In converting alternating current to direct current, the conjunction of the anode and corresponding bus section, busbar section of the DC output end of the AC/DC conversion module 4
Lock bus anode is connected, cathode is connected with the bus negative terminal of corresponding bus section, busbar section, and the AC/DC conversion module 4 is connected to
The route of bus section, busbar section is equipped with the first breaker 7, and the anode of the DC output end of the AC/DC conversion module 4 is connected to first
Be additionally provided with power-type diode 6 on the route of breaker 7, the conducting direction of the diode 6 be by AC/DC conversion module 4 to
Bus section, busbar section；The positive and negative anodes of the battery 5 by the DC output end of the second breaker 8 and the AC/DC conversion module 4 just
Cathode is correspondingly connected with.
The type selecting of power-type diode 6 needs the capacity according to system and considers engineering coefficient appropriate to select electric current
With repetitive peak reverse voltage value, it is also necessary to calculate the fever feelings of power-type diode 6 according to the size of rated operational current
Condition decides whether to install radiator additional.
Further, the AC/DC conversion module 4 is also correspondingly provided with exchange switching device 9, the AC/DC conversion module 4
Ac input end be connected with 9 output end of switching device is exchanged, the exchange switching device 9 have the first ac input end and
Second ac input end can connect two groups of AC power sources, can automatically switch when AC power failure, it is ensured that DC power supply
Reliable power supply.
The closing bus bar anode and bus negative terminal of first bus section, busbar section 100 and the closing bus bar anode of the second bus section, busbar section 200 and
Also by the corresponding connection of busbar breaker between bus negative terminal, to protect bus；Preferably, since dc circuit breaker has direction
Property, therefore it is provided with two busbar breakers of QFL1 and QFL2 as shown in Figure 1.
System is additionally provided with monitoring module, and for carrying out system administration, major function is the long-range monitoring of battery management and backstage,
And data acquisition is carried out to junior's smart machine and is shown.
It is additionally provided with distribution monitor module in power supply system, analog quantitys various in the AC DC in system, switching value are believed
It number acquires and handles, while providing sound-light alarm.
System is additionally provided with battery inspection device 17, monomer battery voltage monitoring and alarm is supported, to battery terminal voltage, electricity
Stream, temperature and other parameters do real time on-line monitoring.
System further includes the insulating monitoring module 10 of ground connection, 10 side of insulating monitoring module and the first bus section, busbar section 100
Control bus anode and closing bus bar anode be connected, the control bus anode of the other side and the second bus section, busbar section 200 and
Closing bus bar anode is connected.Insulating monitoring module 10 is used to monitor the insulation situation of system busbar and branch, generates alarm letter
Number and reported data arrive monitoring module, monitoring module display data details.
Corresponding each bus section, busbar section, further includes being connected between the positive electrode and negative electrode of the DC output end of AC/DC conversion module 4
First voltage detection device 11, and be mounted on the DC output end of AC/DC conversion module 4 negative output line road first
Current detection means 12, the two are used to monitor the voltage and current of direct current output.
Corresponding each bus section, busbar section, further includes the second voltage detection device 13 being connected between the positive electrode and negative electrode of battery 5,
And it is mounted on the second current detection means 14 of the negative output line road of battery 5, the two is for monitoring 5 the two poles of the earth of battery
Voltage and charging and discharging currents.
In application, considering the presence of 6 junction voltage of power-type diode, the output electricity of two groups of AC/DC conversion modules 4 is set
The pressure difference of pressure is 1 to 2V；It is the first bus section, busbar section 100 and the second bus section, busbar section with the AC/DC conversion module 4 compared with high output voltage
200 provide direct current, and charge for corresponding battery 5, and it is right for having compared with the AC/DC conversion module 4 of low output voltage
The battery 5 answered charges；It is mother by other side AC/DC conversion module 4 when having the side compared with high output voltage to break down
Line power supply.
Busbar breaker is disconnected, two groups of bus section, busbar sections are used respectively as DC power-supply system.
Claims (6)
1. a kind of automatic redundancy zero propagation switching system of two dc power supply, including bus, the bus include control bus anode,
Closing bus bar anode and bus negative terminal, it is characterised in that: the bus is divided into the first bus section, busbar section (100) and the second bus section, busbar section
(200), each bus section, busbar section is respectively corresponded equipped with combined floodgate output module (1), control output module (2) and dropping equipment (3), the drop
Where pressure device (3) is connected between the control bus anode and closing bus bar anode of bus section, busbar section, the combined floodgate output module (1)
It is connected with the closing bus bar anode of place bus section, busbar section and bus negative terminal, control output module (2) and place bus section, busbar section
Control bus anode and bus negative terminal are connected；
Each bus section, busbar section has also respectively corresponded one group of AC/DC conversion module (4) and battery (5), the AC/DC conversion module (4)
For converting alternating current to direct current, anode and the corresponding bus section, busbar section of the DC output end of the AC/DC conversion module (4)
Closing bus bar anode be connected, cathode is connected with the bus negative terminal of corresponding bus section, busbar section, the AC/DC conversion module (4)
The route for being connected to bus section, busbar section is equipped with the first breaker (7), the anode of the DC output end of the AC/DC conversion module (4)
It is connected on the route of the first breaker (7) and is additionally provided with diode (6), the conducting direction of the diode (6) is to be become by AC/DC
Block (4) are changed the mold to bus section, busbar section；The positive and negative anodes of the battery (5) pass through the second breaker (8) and the AC/DC conversion module
(4) positive and negative anodes of DC output end are correspondingly connected with；
The closing bus bar anode and bus negative terminal of first bus section, busbar section (100) and the closing bus bar anode of the second bus section, busbar section (200) and
Also pass through the corresponding connection of busbar breaker between bus negative terminal.
2. the automatic redundancy zero propagation switching system of two dc power supply as described in claim 1, it is characterised in that: the AC/DC
Conversion module (4) is also correspondingly provided with exchange switching device (9), and the ac input end of the AC/DC conversion module (4) is cut with exchanging
Changing device (9) output end is connected, and the exchange switching device (9) has the first ac input end and the second ac input end.
3. the automatic redundancy zero propagation switching system of two dc power supply as described in claim 1, it is characterised in that: further include ground connection
Insulating monitoring module (10), the control bus anodes of insulating monitoring module (10) side and the first bus section, busbar section (100) with
And closing bus bar anode is connected, the control bus anode and closing bus bar anode phase of the other side and the second bus section, busbar section (200)
Connection.
4. the automatic redundancy zero propagation switching system of two dc power supply as described in claim 1, it is characterised in that: corresponding each bus
Section, further includes the first voltage detection device being connected between the positive electrode and negative electrode of the DC output end of AC/DC conversion module (4)
(11), and be mounted on AC/DC conversion module (4) DC output end negative output line road the first current detection means
(12).
5. the automatic redundancy zero propagation switching system of two dc power supply as described in claim 1, it is characterised in that: corresponding each bus
Section, further includes the second voltage detection device (13) being connected between the positive electrode and negative electrode of battery (5), and be mounted on electric power storage
The second current detection means (14) of the negative output line road in pond (5).
6. the automatic redundancy zero propagation switching system of two dc power supply as claimed in claim 1 to 5, it is characterised in that: institute
Stating busbar breaker includes concatenated first busbar breaker (15) and the second busbar breaker (16).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822274916.2U CN209170039U (en) | 2018-12-29 | 2018-12-29 | A kind of automatic redundancy zero propagation switching system of two dc power supply |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822274916.2U CN209170039U (en) | 2018-12-29 | 2018-12-29 | A kind of automatic redundancy zero propagation switching system of two dc power supply |
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| Publication Number | Publication Date |
|---|---|
| CN209170039U true CN209170039U (en) | 2019-07-26 |
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ID=67328104
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| Application Number | Title | Priority Date | Filing Date |
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| CN201822274916.2U Active CN209170039U (en) | 2018-12-29 | 2018-12-29 | A kind of automatic redundancy zero propagation switching system of two dc power supply |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109450080A (en) * | 2018-12-29 | 2019-03-08 | 烟台东方威思顿电气有限公司 | A kind of automatic redundancy zero propagation switching system of two dc power supply and method |
| CN112820565A (en) * | 2020-12-29 | 2021-05-18 | 常熟开关制造有限公司(原常熟开关厂） | Automatic transfer switching device control method and automatic transfer switching device |
-
2018
- 2018-12-29 CN CN201822274916.2U patent/CN209170039U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109450080A (en) * | 2018-12-29 | 2019-03-08 | 烟台东方威思顿电气有限公司 | A kind of automatic redundancy zero propagation switching system of two dc power supply and method |
| CN112820565A (en) * | 2020-12-29 | 2021-05-18 | 常熟开关制造有限公司(原常熟开关厂） | Automatic transfer switching device control method and automatic transfer switching device |
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