CN204858724U - Hand over automatic switching device of DC power supply - Google Patents
Hand over automatic switching device of DC power supply Download PDFInfo
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- CN204858724U CN204858724U CN201520529449.7U CN201520529449U CN204858724U CN 204858724 U CN204858724 U CN 204858724U CN 201520529449 U CN201520529449 U CN 201520529449U CN 204858724 U CN204858724 U CN 204858724U
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- 238000005457 optimization Methods 0.000 description 2
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Abstract
The utility model provides a hand over automatic switching device of DC power supply, includes ac contactor, low voltage relay, alternating current power supply zero line input and firewire input port, DC power supply positive input terminal and negative pole input and two outputs. The utility model discloses supply the alternating current to regard as main power supply in order to insert the municipality, the automatic direct current system of transformer substation that changes over to over to supplied power after the municipality supplied the alternating current trouble, reached uninterrupted power source's effect. The utility model discloses reduced and lost the electricity because of the municipality supplies the alternating current to lose the dispatching data network equipment that arouses with the direct current system trouble, improved the safety and stability reliability of operation of dispatching data network equipment, not only economy but also practicality. The utility model discloses utilize the inside switching power supply characteristic of equipment such as dispatching data network, through handing over the automatic switching of DC power supply, improve the service reliability of equipment such as dispatching data network, avoid leading to the phenomenon that its life -span reduces with a lot the load for a long time because of the group battery.
Description
Technical field
The utility model belongs to AC and DC power supply handoff technique field, is specifically related to carry out alternating current-direct current access to the equipment being built-in with Switching Power Supply and switches, realize uninterrupted power supply and power.
Background technology
At present, all transformer stations all require to carry out unattended operation, and realization scheduling " four is distant " (remote control, remote regulating, remote signalling, remote measurement) is unattended necessary condition, wherein dispatch data net equipment is the key realizing scheduling " four is distant ", there is its reliable support, transformer station's data dispatching just can be sent to main station system timely and accurately, monitor staff just can monitor the various equipment of transformer station and information, control, judge and analyze in real time, so the reliability of dispatch data net device power supply (DPS) seems particularly important.At present; the equipment such as transformer station's dispatch data net mainly contain router, switch, monitoring background computer; and each transformer station generally to configure two covers for subsequent use each other; these equipment all adopt the built-in Switching Power Supply of equipment to be converted to low voltage (as+5V ,+12V etc.) and power to inner electronic circuit and components and parts; no industrial frequency transformer; and very high to the requirement of power supply, usually direct for these equipment incoming transport city can be powered for AC-powered or access transformer station direct current system.Direct access city is for AC-powered, its power supply reliability does not reach requirement, the direct transmission affecting data dispatching, the direct current system of access transformer station is powered, load current is larger, and inherently cause the direct current system battery charge less electricity of transformer station for a long time with a large amount of loads, thus the life-span of battery is caused to reduce.
Summary of the invention
The purpose of this utility model is providing a kind of power of alterating and direct current automatic switching device of uninterrupted power supply for dispatching data network equipment.It has reduces direct current system load, auto switching electric source, the advantage of safety, stable operation, effectively reduces substation batteries early failure, improve the equipment such as dispatch data net for reliability.
The utility model solves the problems of the technologies described above by the following technical programs:
A kind of power of alterating and direct current automatic switching device, comprises A.C. contactor, low-voltage relay, AC power zero line input and live wire input, DC power anode input and negative input and two outputs, it is characterized in that,
Two control ends of described low-voltage relay connect zero line input and live wire input respectively, and the input of low-voltage relay normally opened contact is connected with live wire input, and the output of low-voltage relay normally opened contact is connected with A.C. contactor control end; Another control end of A.C. contactor connects zero line input; The input of two normally opened contacts of A.C. contactor connects zero line input and live wire input respectively; The input of two normally-closed contacts of A.C. contactor connects electrode input end and negative input respectively; The cathode output end of A.C. contactor normally-closed contact is connected with an output with after its normally opened contact fire wire output end short circuit; The cathode output end of A.C. contactor normally-closed contact is connected with another output with after the zero line output short circuit of its normally opened contact.
As optimization, the low pressure trigger voltage of described low-voltage relay is adjusted as 180V, adopts the DY-29C type low-voltage relay that Zhejiang A Ji electricity Qi Chang produces, potential winding setting range 80-320V, resetting ratio 1.25;
As optimization, described A.C. contactor is highly sensitive uninterrupted formula contactor, and contactor switch off time is not more than 0.5s, adopt Chinese De Lixi control interest group produce CJX2-12 type A.C. contactor, coil voltage 24-380V, operate time≤0.4s.
The utility model is to access city for alternating current as main power supply, and city powers for automatically proceeding to transformer station direct current system after alternating current fault, reaches the effect of uninterrupted power supply.The utility model decreases because city loses and the dispatch data net equipment dead electricity that causes of DC system fault for alternating current, improves the reliability of the safe and stable operation of dispatch data net equipment, not only economy but also practical.The utility model utilizes the device interior Switching Power Supply characteristics such as dispatch data net, by power of alterating and direct current automatic switching, improves the power supply reliability of the equipment such as dispatch data net, avoids because battery pack is for a long time with the phenomenon that a large amount of load causes its life-span to reduce.
Accompanying drawing explanation
Fig. 1 is the utility model embodiment circuit diagram.
Embodiment
Content of the present utility model is explained in detail further below in conjunction with drawing and description.
As shown in Figure 1, a kind of power of alterating and direct current automatic switching device, comprises A.C. contactor KM, low-voltage relay KV, AC power zero line input AC-N and live wire input AC-L, a DC power anode input DC+ and negative input DC-and 2 output OUTPUT1 and 2;
Two control ends of described low-voltage relay KV connect zero line input AC-N and live wire input AC-L respectively, and the low pressure trigger voltage of described low-voltage relay is adjusted as 180V; The input of low-voltage relay normally opened contact KV1 is connected with live wire input AC-L, and the output KV2 of low-voltage relay normally opened contact KV1 is connected with a control end of A.C. contactor KM; Another control end of A.C. contactor connects zero line input AC-N; Described A.C. contactor is highly sensitive uninterrupted formula contactor, and contactor switch off time is not more than 0.5s; The input of two normally opened contacts KM1, KM2 of A.C. contactor connects zero line input AC-N and live wire input AC-L respectively; The input of two normally-closed contacts KM3, KM4 of A.C. contactor connects electrode input end DC+ and negative input DC-respectively; The cathode output end of A.C. contactor normally-closed contact KM3 is connected with output 1 with after its normally opened contact KM1 fire wire output end short circuit; The cathode output end of A.C. contactor normally-closed contact KM4 is connected with output 2 with after the zero line output short circuit of its normally opened contact KM2;
The low pressure trigger voltage of described low-voltage relay is adjusted as 180V, adopts the DY-29C type low-voltage relay that Zhejiang A Ji electricity Qi Chang produces, potential winding setting range 80-320V, resetting ratio 1.25;
Described A.C. contactor is highly sensitive uninterrupted formula contactor, and contactor switch off time is not more than 0.5s, adopt Chinese De Lixi control interest group produce CJX2-12 type A.C. contactor, coil voltage 24-380V, operate time≤0.4s.
City is connected with zero line input AC-N and live wire input AC-L respectively for alternating current, and transformer station direct current system is connected with electrode input end DC+ and negative input DC-respectively.When city is normal for AC-powered voltage (198-235V), under-voltage replay KV starts, low-voltage relay normally opened contact closes, the charged startup of ac contactor coil KM, normally opened contact KM1, KM2 of A.C. contactor are closed, normally-closed contact KM3, KM4 disconnect, and now two outputs 1,2 export city for alternating current, and DC power supply disconnects isolation;
When city supplies AC-powered disconnection or voltage drop to below 180V, under-voltage replay KV stops, and under-voltage replay normally opened contact KV1 disconnects; Now, A.C. contactor KM dead electricity, normally opened contact KM1, KM2 of A.C. contactor disconnect, and normally-closed contact KM3, KM4 of A.C. contactor are closed, and now two outputs 1,2 export DC power supply, are powered by direct current system, and AC power disconnects isolation.
The utility model is by internal communication contactor and low-voltage relay, and access direct current and AC power, the utility model selects out-put supply automatically according to power conditions, thus realizes the automatic switching of duplicate supply, provides the function of uninterrupted power supply simultaneously.The utility model most of the time supplies AC-powered by city, A.C. contactor is charged for a long time, select highly sensitive uninterrupted formula A.C. contactor, the long charged adhesive of coil energy, when alternating voltage is lower than 180V, disconnected by low-voltage relay, effectively prevent contactor coil from jumping in critical point.AC and DC can be mutually isolated.Coil is less than 0.5S pickup time, can reach the effect of uninterrupted power supply.
Claims (3)
1. a power of alterating and direct current automatic switching device, comprises A.C. contactor, low-voltage relay, AC power zero line input and live wire input, DC power anode input and negative input and two outputs, it is characterized in that,
Two control ends of described low-voltage relay connect zero line input and live wire input respectively, and the input of low-voltage relay normally opened contact is connected with live wire input, and the output of low-voltage relay normally opened contact is connected with A.C. contactor control end; Another control end of A.C. contactor connects zero line input; The input of two normally opened contacts of A.C. contactor connects zero line input and live wire input respectively; The input of two normally-closed contacts of A.C. contactor connects electrode input end and negative input respectively; The cathode output end of A.C. contactor normally-closed contact is connected with an output with after its normally opened contact fire wire output end short circuit; The cathode output end of A.C. contactor normally-closed contact is connected with another output with after the zero line output short circuit of its normally opened contact.
2. power of alterating and direct current automatic switching device as claimed in claim 1, it is characterized in that, the low pressure trigger voltage of described low-voltage relay is adjusted as 180V, adopts the DY-29C type low-voltage relay that Zhejiang A Ji electricity Qi Chang produces, potential winding setting range 80-320V, resetting ratio 1.25.
3. power of alterating and direct current automatic switching device as claimed in claim 1, it is characterized in that, described A.C. contactor is highly sensitive uninterrupted formula contactor, contactor switch off time is not more than 0.5s, adopt Chinese De Lixi control interest group produce CJX2-12 type A.C. contactor, coil voltage 24-380V, operate time≤0.4s.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520529449.7U CN204858724U (en) | 2015-07-21 | 2015-07-21 | Hand over automatic switching device of DC power supply |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520529449.7U CN204858724U (en) | 2015-07-21 | 2015-07-21 | Hand over automatic switching device of DC power supply |
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| Publication Number | Publication Date |
|---|---|
| CN204858724U true CN204858724U (en) | 2015-12-09 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520529449.7U Expired - Fee Related CN204858724U (en) | 2015-07-21 | 2015-07-21 | Hand over automatic switching device of DC power supply |
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| Country | Link |
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| CN (1) | CN204858724U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107394884A (en) * | 2017-09-04 | 2017-11-24 | 贵州乌江水电开发有限责任公司构皮滩发电厂 | A kind of excitation system, which opens, encourages power supply architecture and control method |
| CN108448711A (en) * | 2018-05-24 | 2018-08-24 | 华润新能源（连州）风能有限公司 | A kind of illumination switching device |
-
2015
- 2015-07-21 CN CN201520529449.7U patent/CN204858724U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107394884A (en) * | 2017-09-04 | 2017-11-24 | 贵州乌江水电开发有限责任公司构皮滩发电厂 | A kind of excitation system, which opens, encourages power supply architecture and control method |
| CN107394884B (en) * | 2017-09-04 | 2023-09-05 | 贵州乌江水电开发有限责任公司构皮滩发电厂 | Excitation system excitation power supply structure and control method |
| CN108448711A (en) * | 2018-05-24 | 2018-08-24 | 华润新能源（连州）风能有限公司 | A kind of illumination switching device |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20151209 Termination date: 20190721 |