CN104467157B - Multi-voltage-class standby direct-current operating power source - Google Patents
Multi-voltage-class standby direct-current operating power source Download PDFInfo
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- CN104467157B CN104467157B CN201410838065.3A CN201410838065A CN104467157B CN 104467157 B CN104467157 B CN 104467157B CN 201410838065 A CN201410838065 A CN 201410838065A CN 104467157 B CN104467157 B CN 104467157B
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Abstract
The invention relates to a multi-voltage-class standby direct-current operating power source. The power source comprises an inverter, a storage battery and a plurality of voltage transformation modules. The input end of the storage battery is connected with the output end of the inverter. The voltage transformation modules are connected to the output end of the storage battery in parallel to form a plurality of standby power supply lines. When input voltage is normal, the input voltage supplies power to the outside, and charges the storage battery after being rectified and transformed by the inverter; when the input voltage is abnormal, output voltage of the storage battery supplies power to the outside after being transformed into output voltage matched with the voltage transformation modules through the voltage transformation modules. The multi-voltage-class standby direct-current operating power source is provided with the multiple voltage transformation modules, and can be applied to a direct-current operating system needing various voltage classes, for instance, the 48V direct-current operation power source can be provided for a ring main unit, and the 220V direct-current operation power source can be provided for a switching station.
Description
Technical field
The present invention relates to the standby direct current operative power source of the direct current cabinet of switching station, more particularly, it relates to a kind of multivoltage
The standby direct current operative power source of grade.
Background technology
With the development of urban power distribution network, the switching station based on 10kV ring main units, with convenient, efficient advantage,
Increasing effect is played in urban distribution network.The reliability of power distribution network directly affects the development of urban construction.To power supply
The requirement of reliability is higher, and the requirement of configuring direct current operation power is also higher.
However, switching station, ring main unit etc. are more where outdoor or remote, even basement.Its working environment is disliked
Bad, networking is difficult, directly enhances the requirement to safeguarding.The power supply mode of the occasion direct current operative power source such as switching station, ring main unit
Mainly there is backup battery to power to power with PT or electric main is powered.
After accumulator is as exchange dead electricity, the guarantee of direct current operative power source uninterrupted power supply, its reliability is of crucial importance.It is existing
Some direct current operative power source great majority are direct current cabinet, and its volume is big, and the number of batteries of outfit is more, are caused to installation and debugging and maintenance
Greatly inconvenience, the reliability of power-supply system also cannot be ensured.
And, the life of storage battery on the market is not general high, it is often necessary to changes, once and accumulator also simultaneous faults,
Ze Zhengjian switching stations can lose direct current operative power source, seriously jeopardize the stable operation of electrical network.After ring main unit power supply mode mainly has
Standby storage battery power supply and PT power, likewise, accumulator failure is frequently found in routine maintenance procedure, once looped network cabinet wire
Power failure, ring main unit can lose direct current operative power source.
The content of the invention
It is an object of the invention to overcome the deficiencies in the prior art temporarily, there is provided a kind of efficient, highly reliable can substitute
The standby direct current operative power source of multi-voltage grade of existing distribution DC power supply device.
Technical scheme is as follows：
A kind of standby direct current operative power source of multi-voltage grade, including inverter, accumulator, several voltage changing modules；Electric power storage
The input in pond is connected with the outfan of inverter, and voltage changing module is connected in parallel on respectively the outfan of accumulator, is formed some standby
Supply line；When input voltage is normal, input voltage supplying power for outside, while Jing after inverter rectifier transformer, entering to accumulator
Row charges；When input voltage is abnormal, the output voltage Jing voltage changing modules of accumulator are transformed into the output matched with voltage changing module
After voltage, supplying power for outside.
Preferably, when the output voltage phase of the output voltage and accumulator for needing standby direct current operative power source supplying power for outside
Meanwhile, the road stand-by power supply circuit need not arrange voltage changing module, form standby direct-furnish circuit, directly by the output electricity of accumulator
Pressure carries out supplying power for outside.
Preferably, the connection line between inverter and accumulator be provided with charging connection switch, when input voltage just
Chang Shi, charging connection switch closure；When input voltage is abnormal, charging connection is switched off.
Preferably, the connection line between accumulator and each voltage changing module is provided with output switch, work as input voltage
When normal, output switch disconnects；When input voltage is abnormal, output switch closure.
Preferably, the outfan of each voltage changing module is provided with power switch, and when input voltage is normal, power switch
Disconnect；When input voltage is abnormal, power switch closure.
Preferably, charging connection switch, all output switchs, all power switch are by universal seclector control
Closure and disconnection.
Preferably, when input voltage is normal, charging connection switch closure, all output switchs, all power switch
Disconnect；When input voltage is abnormal, charging connection is switched off, and output switch and the confession of the connection of at least one voltage changing module are established by cable
Close and close, output switch and the power switch of remaining voltage changing module connection disconnect.
Preferably, the charging module in accumulator is provided with charge switch, when input voltage is normal, charging connection is opened
Close and close, charge switch closure；When input voltage is abnormal, charging connection is switched off, and charge switch disconnects.
Preferably, charging connection switch be connected to before all stand-by power supply circuits, after the outfan of inverter.
Preferably, when outfan of the standby direct-furnish connection in inverter, charging connection switch in parallel has cut-off
Switch, when input voltage is normal, cutoff switch disconnects；When standby direct circuit supplying power for outside is needed, cutoff switch closure.
Beneficial effects of the present invention are as follows：
The standby direct current operative power source of multi-voltage grade of the present invention arranges multiple voltage changing modules, can be used to needing various
The DC operating system of different electric pressures, for example, ring main unit provide the direct current operative power source of 48V, and for switching station 220V is provided
Direct current operative power source etc..
The places such as the alternative switching station of the present invention and the direct current operative power source of ring main unit are temporarily ring main unit, switching station
Intelligent network distribution terminal, intelligent equipment, Microcomputer Protection, vacuum circuit breaker energy storage etc. provide temporary electricity.And the present invention can
Multimachine and machine operation, the interim direct current cabinet power supply for substituting switching station.
Description of the drawings
Fig. 1 is the schematic diagram of the present invention；
Fig. 2 is the setting schematic diagram of charging connection switch, cutoff switch and the power switch of the present invention；
Fig. 3 is the on off state table of universal seclector.
Specific embodiment
The present invention is described in further detail below in conjunction with drawings and Examples.
Various different voltages in order to be applied to the needs such as switching station, ring main unit of the invention, meet unequally loaded demand,
Improve the utilization rate of power supply, there is provided a kind of standby direct current operative power source of multi-voltage grade, including inverter, accumulator, several
Voltage changing module；The input of accumulator is connected with the outfan of inverter, and voltage changing module is connected in parallel on respectively the outfan of accumulator,
Form some stand-by power supply circuits.When the output electricity of the output voltage and accumulator for needing standby direct current operative power source supplying power for outside
When pressing identical, the road stand-by power supply circuit need not arrange voltage changing module, standby direct-furnish circuit be formed, directly by the defeated of accumulator
Going out voltage carries out supplying power for outside.
When input voltage is normal, input voltage supplying power for outside, while Jing after inverter rectifier transformer, carrying out to accumulator
Charge；When input voltage is abnormal, the output voltage Jing voltage changing modules of accumulator are transformed into the output electricity matched with voltage changing module
After pressure, supplying power for outside.
In order to ensure more stable safety of the invention, the connection line between inverter and accumulator is provided with charging connection and opens
Close, the charging module in accumulator is provided with charge switch, when input voltage is normal, charging connection switch closure, charging is opened
Close and close, be that accumulator is charged；When input voltage is abnormal, such as input voltage dead electricity, charging connection is switched off, charged
Switch off, input voltage cannot supplying power for outside, while stopping being charged accumulator, and switch to and externally supplied by accumulator
Electricity.
Connection line between accumulator and each voltage changing module is provided with output switch, the outfan of each voltage changing module
Power switch is provided with, when input voltage is normal, output switch disconnects, and power switch disconnects；It is defeated when input voltage is abnormal
Go out switch closure, power switch closure.
Because the present invention provides the output of many voltage gradations, when needing some or several stand-by power supply circuit supplying power for outside
When, needing to close or opening operation charging connection switch, multiple output switchs, multiple power switch, operation is more, such as
Fruit can not be switched fast, and the reliability of power-supply system will be substantially reduced.Therefore, in the present invention, charging connection is switched, owned
Output switch, all power switch are by universal seclector control closure and disconnection.Under the control of universal seclector,
When input voltage is normal, charging connection switch closure, all output switchs, all power switch disconnect；When input voltage it is different
Chang Shi, charging connection is switched off, and output switch and the power switch of the connection of at least one voltage changing module are closed, and remaining becomes pressing mold
The output switch of block connection disconnects with power switch.
In order to simplify circuit design, when needing, the output voltage of standby direct current operative power source supplying power for outside is defeated with accumulator
Go out voltage it is identical when, outfan of the standby direct-furnish connection in inverter.In the connected mode, in order to avoid inverter certainly
The reliability defect that body is present, charging connection switch in parallel has cutoff switch, and when input voltage is normal, cutoff switch disconnects；
When standby direct circuit supplying power for outside is needed, cutoff switch closure.
Charging connection switch be connected to before all stand-by power supply circuits, after the outfan of inverter, it is ensured that charge connect
Connect switch disconnect will not any stand-by power supply circuit normal work.
As shown in Figure 1 and Figure 2, in the present embodiment, input voltage is 220V alternating voltages, and inverter is AC220V/DC12V
Transducer, accumulator includes the 14Ah/12V rechargeable batteries of two groups of series connection, and the present embodiment requires the output electricity of stand-by power supply circuit
Pressure is respectively 24V output voltages, 48V output voltages, 110V output voltages, 220V output voltages, therefore voltage changing module includes 48V
Boost module, 110V boost modules, 220V boost modules.
Electrical connection is specially：Arrange between the positive pole of the positive pole of the alternating voltage of input voltage and the input of inverter
The both positive and negative polarity for having protective tube, the outfan of inverter is connected respectively with the both positive and negative polarity of accumulator, the stand-by power supply of 24V output voltages
The both positive and negative polarity of circuit is also connected with the both positive and negative polarity of the outfan of inverter respectively, 48V boost modules, 110V boost modules, 220V
The both positive and negative polarity of boost module is connected respectively with the both positive and negative polarity of accumulator, and each stand-by power supply circuit is parallel relationship.Inverter it is defeated
The positive pole for going out end is arranged in parallel charging connection switch and cutoff switch, arranges after charging connection switch, before the both positive and negative polarity of accumulator
There is charge switch.
The output switch of every stand-by power supply circuit is arranged on positive pole, and the input of every stand-by power supply circuit is just
Display lamp is parallel between negative pole.In 48V stand-by power supply circuits, 110V stand-by power supply circuits, 220V stand-by power supply circuits, indicate
Lamp can be connected in parallel on the input or outfan of voltage changing module.It is respectively provided with the both positive and negative polarity of the outfan of every stand-by power supply circuit
There is power switch.
As shown in figure 3, the present embodiment universal seclector arranges six grades, each switch has two contacts, while providing only
One stand-by power supply circuit carries out supplying power for outside.
All to switch off when universal seclector is located at 0 grade, standby direct current operative power source is closed；
When universal seclector is located at 1 grade, the output switch closure of 24V stand-by power supply circuits, its output positive and negative charge
The power switch closure of A1, A2, cutoff switch closure, other are switched off, and standby direct current operative power source provides 24V output electricity
Pressure；
When universal seclector is located at 2 grades, the output switch closure of 48V stand-by power supply circuits, its output positive and negative charge
The power switch closure of B1, B2, other are switched off, and standby direct current operative power source provides 48V output voltages；
When universal seclector is located at 3 grades, the output switch closure of 110V stand-by power supply circuits, its output positive and negative charge
The power switch closure of C1, C2, other are switched off, and standby direct current operative power source provides 110V output voltages；
When universal seclector is located at 4 grades, the output switch closure of 220V stand-by power supply circuits, its output positive and negative charge
The power switch closure of D1, D2, other are switched off, and standby direct current operative power source provides 220V output voltages；
When universal seclector is located at 5 grades, charging connection switch closure, charge switch BET+, BET- closure, other are opened
Shut-off is opened, and input voltage is charged to accumulator.
Above-described embodiment is intended merely to the explanation present invention, and is not used as limitation of the invention.As long as according to this
Bright technical spirit, is changed, modification etc. all will fall in the range of the claim of the present invention to above-described embodiment.
Claims (6)
1. the standby direct current operative power source of a kind of multi-voltage grade, it is characterised in that including inverter, accumulator, several transformations
Module；The input of accumulator is connected with the outfan of inverter, and voltage changing module is connected in parallel on respectively the outfan of accumulator, is formed
Some stand-by power supply circuits；When input voltage is normal, input voltage supplying power for outside, while Jing after inverter rectifier transformer, it is right
Accumulator is charged；When input voltage is abnormal, the output voltage Jing voltage changing modules of accumulator are transformed into and voltage changing module
After the output voltage matched somebody with somebody, supplying power for outside；
Connection line between inverter and accumulator is provided with charging connection switch, when input voltage is normal, charging connection
Switch closure；When input voltage is abnormal, charging connection is switched off；
Connection line between accumulator and each voltage changing module is provided with output switch, and when input voltage is normal, output is opened
Shut-off is opened；When input voltage is abnormal, output switch closure；
The outfan of each voltage changing module is provided with power switch, and when input voltage is normal, power switch disconnects；When input electricity
When reduce off-flavor is normal, power switch closure；
Charging connection switch, all output switchs, all power switch are by universal seclector control closure and disconnection.
2. the standby direct current operative power source of multi-voltage grade according to claim 1, it is characterised in that when needing standby direct current
When the output voltage of operation power supplying power for outside is identical with the output voltage of accumulator, the road stand-by power supply circuit need not be arranged
Voltage changing module, forms standby direct-furnish circuit, directly carries out supplying power for outside by the output voltage of accumulator.
3. the standby direct current operative power source of multi-voltage grade according to claim 1 and 2, it is characterised in that work as input voltage
When normal, charging connection switch closure, all output switchs, all power switch disconnect；When input voltage is abnormal, charges and connect
Connect and switch off, output switch and the power switch of the connection of at least one voltage changing module are closed, and it is defeated that remaining voltage changing module connects
Go out switch to disconnect with power switch.
4. the standby direct current operative power source of multi-voltage grade according to claim 1 and 2, it is characterised in that in accumulator
Charging module is provided with charge switch, when input voltage is normal, charging connection switch closure, and charge switch closure；Work as input
During electric voltage exception, charging connection is switched off, and charge switch disconnects.
5. the standby direct current operative power source of multi-voltage grade according to claim 1 and 2, it is characterised in that charging connection is opened
Connection be connected on before all stand-by power supply circuits, after the outfan of inverter.
6. the standby direct current operative power source of multi-voltage grade according to claim 2, it is characterised in that when standby direct-furnish circuit
When being connected to the outfan of inverter, charging connection switch in parallel has cutoff switch, and when input voltage is normal, cutoff switch is broken
Open；When standby direct circuit supplying power for outside is needed, cutoff switch closure.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410838065.3A CN104467157B (en) | 2014-12-29 | 2014-12-29 | Multi-voltage-class standby direct-current operating power source |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410838065.3A CN104467157B (en) | 2014-12-29 | 2014-12-29 | Multi-voltage-class standby direct-current operating power source |
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| CN104467157A CN104467157A (en) | 2015-03-25 |
| CN104467157B true CN104467157B (en) | 2017-05-03 |
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| CN106026350B (en) * | 2016-05-11 | 2018-09-11 | 中车大连机车研究所有限公司 | DC600V train power supplies device power supply switching control plate |
| CN106230267B (en) * | 2016-08-29 | 2019-06-28 | 深圳供电局有限公司 | Movable integrated test power supply device |
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| CN102208832A (en) * | 2011-06-03 | 2011-10-05 | 四川省电力公司广元电业局 | Two-section DC operating power system |
| CN202424293U (en) * | 2011-11-22 | 2012-09-05 | 深圳市金钒能源科技有限公司 | Power supply system of vanadium battery power supply |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101121150B1 (en) * | 2010-02-10 | 2012-03-20 | 주식회사 유컴테크놀러지 | Method and device for cutting off standby power |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102208832A (en) * | 2011-06-03 | 2011-10-05 | 四川省电力公司广元电业局 | Two-section DC operating power system |
| CN202424293U (en) * | 2011-11-22 | 2012-09-05 | 深圳市金钒能源科技有限公司 | Power supply system of vanadium battery power supply |
Non-Patent Citations (1)
| Title |
|---|
| 钒电池在110V大鹏变电站用电源系统的应用;张小虎;《中国优秀硕士学位论文全文数据库》;20130615;正文第1-29页 * |
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