CN201868941U - Uninterrupted switching device for transformer substation direct-current power supply - Google Patents
Uninterrupted switching device for transformer substation direct-current power supply Download PDFInfo
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- CN201868941U CN201868941U CN2010206330587U CN201020633058U CN201868941U CN 201868941 U CN201868941 U CN 201868941U CN 2010206330587 U CN2010206330587 U CN 2010206330587U CN 201020633058 U CN201020633058 U CN 201020633058U CN 201868941 U CN201868941 U CN 201868941U
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Abstract
The utility model discloses an uninterrupted switching device for a transformer substation direct-current power supply, which is characterized by being provided with a temporary power supply direct-current bus, a temporary power supply branch feeder line and a diode bypass, wherein the temporary power supply direct-current bus and the temporary power supply branch feeder line are connected with the diode bypass by the aid of plug-in type connection terminals. When an old direct-current device is detached, firstly the temporary power supply direct-current bus and a normally operated power supply are placed side by side by the aid of the diode bypass, a miniature air switch is closed, the diode bypass is short-circuited after a normally operated power supply cable is detached, a temporary power supply branch is placed in service, a temporary power supply passes through the diode bypass again after a new direct-current power supply device is assembled and debugged, and then the temporary power supply is out of service after the normally operated power supply is crimped and placed in service, so that important devices in a substation are not powered off when the power supply is switched, and the impact of voltage difference on two sets of direct-current systems and storage battery sets is avoided.
Description
Technical field
The utility model relates to the distribution electric supply installation, specifically a kind of safe and reliable, easy to operate, uninterrupted switching device of transforming plant DC power supply of increasing work efficiency.
Background technology
As everyone knows; present stage, DC power supply device was in transforming the replacing operation; the operating personnel generally takes instantaneous power failure method and charged and connection; wherein instantaneous power failure switching method is the of short duration dead electricity of visual plant DC power supply in standing in operation; the artificial like this reliability that reduces equipment operation; in the direct current system field operation; once ran into repeatedly that electrical network takes place unusual when protection equipment instant electricity loss; this method has not only been violated in State Grid Corporation of China's " DC power system overhaul of the equipments standard " about not allowing the load loop that has a power failure in the direct current system retrofit work; need the requirement of charged switching, also make operation of power networks exist great potential safety hazard.New, old two cover direct current system controls are provided with difference with power switch voltage but charged and connection is subjected to, in the load power handoff, if the direct respectively and interim DC power supply of new, old DC power supply device also connects, then regulate in any case, newly, certainly exist Yi Ge ≧ 5V voltage difference between old power-supply device and the interim power-supply device, this moment is if take the switching item by item successively of feeder line branch road, to make new, old two cover direct current systems and batteries cause repeatedly circulation to impact, also artificially reduce the operational reliability of direct current system equipment and batteries.
Summary of the invention
The utility model is at the deficiencies in the prior art, a kind of not dead electricity of important device that guarantees in the station is proposed, DC power supply device and new, the old DC power supply device uninterrupted switching device of transforming plant DC power supply that do not disturb mutually, impact temporarily in the switching power supply in the switching power work.
The utility model can reach by following measure.
The uninterrupted switching device of a kind of transforming plant DC power supply, it is characterized in that being provided with interim power supply dc bus, interim power branch feeder line and bypass diode, interim power supply dc bus is connected through the plug-in type binding post with bypass diode with interim power branch feeder line.
The interim power supply dc bus of the utility model is connected with bypass diode with the plug-in type binding post through isolated diode.
When the utility model is removed in old DC equipment, make interim power supply dc bus arranged side by side earlier by bypass diode and normal operation power supply (old DC power supply device feeder line), the miniature air switch closes, after treating normally to move the feed cable dismounting, the short circuit bypass diode puts interim power branch into operation again.Visual plant dead electricity not in station when this had both guaranteed power supply transfer has also effectively been avoided the shock effect of voltage difference to two cover direct current systems and batteries; After new DC power supply device assembling and debugging finish, interim power supply is passed through bypass diode once more, after treating normally to move power supply (new DC power supply device feeder line) crimping and finishing and put into operation, again that interim power supply is out of service, visual plant dead electricity not in the station when having guaranteed power supply transfer, and avoided the shock effect of voltage difference to two cover direct current systems and batteries, have advantages such as safe and reliable, easy to operate, operating efficiency height.
Description of drawings.
Fig. 1 is a kind of structural representation of the present utility model.
Embodiment.
Below in conjunction with accompanying drawing the utility model is further described.
As shown in the figure, the uninterrupted switching device of a kind of transforming plant DC power supply, it is characterized in that being provided with interim power supply dc bus 1, the at least two pairs of interim power branch feeder lines 2 and bypass diode 3, interim power supply dc bus 1 is connected through plug-in type binding post 4 respectively with bypass diode 3 with interim power branch feeder line 2, described interim power supply dc bus 1 is connected with bypass diode 3 with plug-in type binding post 4 through isolated diode 5, each plug-in type binding post 4 is contained in the air circuit 6, above-mentioned plug-in type binding post 4, air circuit 6 and isolated diode 5 are same as the prior art, this does not give unnecessary details, when the utility model is removed in old DC equipment, make interim power supply dc bus arranged side by side earlier by bypass diode and normal operation power supply (old DC power supply device feeder line), the miniature air switch closes, after treating normally to move the feed cable dismounting, the short circuit bypass diode puts interim power branch into operation again.Visual plant dead electricity not in station when this had both guaranteed power supply transfer has also effectively been avoided the shock effect of voltage difference to two cover direct current systems and batteries; After new DC power supply device assembling and debugging finish, interim power supply is passed through bypass diode once more, after treating normally to move power supply (new DC power supply device feeder line) crimping and finishing and put into operation, again that interim power supply is out of service, visual plant dead electricity not in the station when having guaranteed power supply transfer, and avoided the shock effect of voltage difference to two cover direct current systems and batteries, structure and connected mode are considered and will be taken into account running without interruption of all visual plants, the measure of having taked each DC power supply branch road to transfer item by item in the concrete construction, this has also effectively stopped because of the numerous possibilities that misoperation takes place of interim power branch feeder line in installing.
Claims (2)
1. uninterrupted switching device of transforming plant DC power supply, it is characterized in that being provided with interim power supply dc bus, interim power branch feeder line and bypass diode, interim power supply dc bus is connected through the plug-in type binding post with bypass diode with interim power branch feeder line.
2. the uninterrupted switching device of a kind of transforming plant DC power supply according to claim 1 is characterized in that interim power supply dc bus is connected with bypass diode with the plug-in type binding post through isolated diode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206330587U CN201868941U (en) | 2010-11-30 | 2010-11-30 | Uninterrupted switching device for transformer substation direct-current power supply |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206330587U CN201868941U (en) | 2010-11-30 | 2010-11-30 | Uninterrupted switching device for transformer substation direct-current power supply |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201868941U true CN201868941U (en) | 2011-06-15 |
Family
ID=44140084
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010206330587U Expired - Fee Related CN201868941U (en) | 2010-11-30 | 2010-11-30 | Uninterrupted switching device for transformer substation direct-current power supply |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201868941U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102064598A (en) * | 2010-11-30 | 2011-05-18 | 山东电力集团公司威海供电公司 | Uninterrupted switching device for DC power supply in transformer substation |
| CN102231561A (en) * | 2011-06-21 | 2011-11-02 | 江苏科技大学 | Uninterrupted power supply control device and method of signal detection alarm system for ship |
-
2010
- 2010-11-30 CN CN2010206330587U patent/CN201868941U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102064598A (en) * | 2010-11-30 | 2011-05-18 | 山东电力集团公司威海供电公司 | Uninterrupted switching device for DC power supply in transformer substation |
| CN102231561A (en) * | 2011-06-21 | 2011-11-02 | 江苏科技大学 | Uninterrupted power supply control device and method of signal detection alarm system for ship |
| CN102231561B (en) * | 2011-06-21 | 2013-08-07 | 江苏科技大学 | Uninterrupted power supply control device and method of signal detection alarm system for ship |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110615 Termination date: 20131130 |