CN204905990U - Quick auto -change over device of incessant DC power supply - Google Patents
Quick auto -change over device of incessant DC power supply Download PDFInfo
- Publication number
- CN204905990U CN204905990U CN201520568922.2U CN201520568922U CN204905990U CN 204905990 U CN204905990 U CN 204905990U CN 201520568922 U CN201520568922 U CN 201520568922U CN 204905990 U CN204905990 U CN 204905990U
- Authority
- CN
- China
- Prior art keywords
- power supply
- change over
- switching
- quick
- output
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 239000003990 capacitor Substances 0.000 claims abstract description 14
- 230000005611 electricity Effects 0.000 abstract description 4
- 238000004146 energy storage Methods 0.000 abstract description 4
- 230000000694 effects Effects 0.000 abstract description 3
- 238000005259 measurement Methods 0.000 abstract 2
- 238000000034 method Methods 0.000 description 6
- 238000001914 filtration Methods 0.000 description 2
- 230000001681 protective effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007257 malfunction Effects 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
Landscapes
- Direct Current Feeding And Distribution (AREA)
Abstract
The utility model relates to a quick auto -change over device of incessant DC power supply. Its characteristics are: including quick change over switch (QK), two inputs of this quick change over switch (QK) are connected with two way power supply respectively, and this quick change over switch's (QK) two way outputs are connected with a switching power supply's (PW) same input, export termination load (RL1) for one of this switching power supply (PW) to it has at least one filter capacitance (C) to connect in parallel on this output. The utility model discloses the electrolytic capacitor of auto -change over device's output adoption 100 -250 microfarad level owing to the energy storage effect of this electric capacity, can guarantee to protect measurement and control device losing under working power supply's the condition as filter capacitance, and its power output can delay more than 150 milliseconds, and protection measurement and control device just really loses the electricity, and DC power supply accomplishes the fast switch over already at this moment to double - circuit DC power supply's seamless handover has been realized.
Description
Technical field
The utility model relates to a kind of uninterrupted DC power supply apparatus for fast switching.
Background technology
In the actual moving process of electric power system, the DC power supply of important power consumption equipment such as supply protective device, TT&C system etc. adopts the operational mode of two group storage batteries and three chargers, and both two electricity three filled, and has two-way independently DC power supply output.In order to prevent the nucleus equipments such as protection, observing and controlling from causing malfunction owing to losing DC supply, improve the device DC power supply reliabilities such as protection, observing and controlling, two dc power supply handoff technique is widely used in protection, in the visual plants such as observing and controlling.
Utility model content
The purpose of this utility model is to provide a kind of uninterrupted DC power supply apparatus for fast switching, can realize continual DC power supply and switch fast, thus guarantees protective device not dead electricity in handoff procedure.
A kind of uninterrupted DC power supply apparatus for fast switching, its special feature is: comprise quick diverter switch, two inputs of this quick diverter switch are connected with duplex feeding power supply respectively, and the two-way output of this quick diverter switch is connected with the same input of a Switching Power Supply, one of this Switching Power Supply exports terminating load, and be parallel with at least one filter capacitor on this output.
Wherein filter capacitor adopts 100-250 F capacitor.
Wherein the switching time of diverter switch is less than 50 milliseconds fast.
The output of the utility model switching device shifter adopts the electrochemical capacitor of 100-250 microfarad range as filter capacitor; due to the energy storage effect of this electric capacity; can ensure that protection supervisory equipment is when losing the job power supply; its power supply exports can time delay more than 150 milliseconds; protection supervisory equipment is real dead electricity; and now DC power supply completes quick switching already, thus achieve the seamless switching of two-way direct current power supply.
Accompanying drawing explanation
Accompanying drawing 1 is circuit theory diagrams of the present utility model.
Embodiment
As shown in Figure 1, the utility model provides a kind of uninterrupted DC power supply apparatus for fast switching, comprise quick diverter switch QK, two inputs of this quick diverter switch QK are connected with duplex feeding power supply respectively, and the two-way output of this quick diverter switch QK is connected with the same input of a Switching Power Supply PW, one of this Switching Power Supply PW exports terminating load RL1, and on this output, is parallel with at least one filter capacitor C.
Wherein filter capacitor C adopts 100-250 F capacitor, and is less than 50 milliseconds the switching time of diverter switch QK fast.
Using method of the present utility model and operation principle are:
As shown in Figure 1, when power device (i.e. load RL1) is when normally working, its working power becomes 5V by Switching Power Supply PW, after 24V or 12V, export to power device after electric capacity C filtering after filtering again, double loop power supply is supplied to Switching Power Supply PW as input by power supply 1, when after this road power failure, because apparatus for fast switching detects this road power loss, deenergization 1 contact immediately, power turn-on 2 contact, carry out the quick switching of DC power supply, in handoff procedure, there is a period of time of non-transformer input in Switching Power Supply PW, within this time, due to the energy storage effect of filter capacitor C, can continue to support that power device normally works, because its switching time is less than 50 milliseconds, be significantly less than the operating time (being about 150 milliseconds) that filter capacitor C energy storage supports, so in handoff procedure, power device can normally work, to be switchedly to complete, recover again original operating state, thus achieve seamless switching.
Claims (3)
1. a uninterrupted DC power supply apparatus for fast switching, it is characterized in that: comprise quick diverter switch (QK), two inputs of this quick diverter switch (QK) are connected with duplex feeding power supply respectively, and the two-way output of this quick diverter switch (QK) is connected with the same input of a Switching Power Supply (PW), one of this Switching Power Supply (PW) exports terminating load (RL1), and on this output, is parallel with at least one filter capacitor (C).
2. a kind of uninterrupted DC power supply apparatus for fast switching as claimed in claim 1, is characterized in that: wherein filter capacitor (C) adopts 100-250 F capacitor.
3. a kind of uninterrupted DC power supply apparatus for fast switching as claimed in claim 1 or 2, is characterized in that: wherein the switching time of diverter switch (QK) is less than 50 milliseconds fast.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520568922.2U CN204905990U (en) | 2015-07-31 | 2015-07-31 | Quick auto -change over device of incessant DC power supply |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520568922.2U CN204905990U (en) | 2015-07-31 | 2015-07-31 | Quick auto -change over device of incessant DC power supply |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204905990U true CN204905990U (en) | 2015-12-23 |
Family
ID=54928136
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520568922.2U Active CN204905990U (en) | 2015-07-31 | 2015-07-31 | Quick auto -change over device of incessant DC power supply |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204905990U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107367293A (en) * | 2017-09-07 | 2017-11-21 | 广西玉柴机器股份有限公司 | A kind of current-output type transmitters sense method and its system |
| CN110445242A (en) * | 2019-06-20 | 2019-11-12 | 合肥移顺信息技术有限公司 | Power supply switch circuit |
-
2015
- 2015-07-31 CN CN201520568922.2U patent/CN204905990U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107367293A (en) * | 2017-09-07 | 2017-11-21 | 广西玉柴机器股份有限公司 | A kind of current-output type transmitters sense method and its system |
| CN110445242A (en) * | 2019-06-20 | 2019-11-12 | 合肥移顺信息技术有限公司 | Power supply switch circuit |
| CN110445242B (en) * | 2019-06-20 | 2023-11-07 | 合肥移顺信息技术有限公司 | Power supply switching circuit |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN204732962U (en) | Dual-power switching system | |
| CN204905990U (en) | Quick auto -change over device of incessant DC power supply | |
| CN203942297U (en) | Two direct current seamless switching device portable power sources | |
| CN105471084B (en) | DC standby power starts controller | |
| WO2011158088A3 (en) | Electric power supply apparatus for vehicle, and control method thereof | |
| CN203932250U (en) | A kind of battery structure based on distributed control electrokinetic cell | |
| CN205666679U (en) | UPS of bypass automatic switch -over type | |
| WO2013154444A8 (en) | Method and system for remote measurement of available capacity of the batteries in the telecommunications power system | |
| CN201994680U (en) | Nondestructive intelligent switching device for high-voltage capacitor group | |
| CN203434739U (en) | Intelligent-type networking system for direct-current contactor of communication power supply | |
| CN205283243U (en) | Output control circuit of uninterrupted power source system | |
| CN203368133U (en) | Direct-current power supply automatic control device | |
| CN204794328U (en) | Three -phase electricity dual supply automatic switching control equipment | |
| CN102684297B (en) | Solar power system and N+1 thereof back up power distribution control method | |
| CN204391889U (en) | Quick power switching system | |
| CN203617776U (en) | Drive DC bus pre-charge circuit for backup power supply of variable pitch system | |
| CN208226581U (en) | A kind of light storage micro-grid system | |
| CN203269383U (en) | Emergency braking circuit of starter | |
| CN202651874U (en) | Multifunctional emergency direct current power supply device | |
| CN205029415U (en) | A circuit that is used for online incessant control DC power supply of high -vol | |
| CN204407980U (en) | A kind of electric discharge device of Large Copacity high-voltage capacitance | |
| CN204348467U (en) | Electromagnetic disc adds demagnetization control module | |
| CN204559228U (en) | A kind of intelligent power automatic switching control equipment | |
| CN203193496U (en) | Large-capacitance self-discharge controller without external power supply | |
| CN202663169U (en) | Polarity-conversion charger |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |