CN102064598A - Uninterrupted switching device for DC power supply in transformer substation - Google Patents
Uninterrupted switching device for DC power supply in transformer substation Download PDFInfo
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- CN102064598A CN102064598A CN 201010565555 CN201010565555A CN102064598A CN 102064598 A CN102064598 A CN 102064598A CN 201010565555 CN201010565555 CN 201010565555 CN 201010565555 A CN201010565555 A CN 201010565555A CN 102064598 A CN102064598 A CN 102064598A
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- power supply
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- diode bypass
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Abstract
The invention discloses an uninterrupted switching device for a direct current (DC) power supply in a transformer substation, which is characterized by being provided with a temporary power supply DC bus, a temporary power supply branch feed line and a diode bypass, wherein the temporary power supply DC bus and the temporary power supply branch feed line are connected with the diode bypass through a pluggable terminal block; when old DC equipment is dismantled, the temporary power supply DC bus is connected in parallel with a normal operation power supply through the diode bypass, and a micro air switch is switched on; after a normal operation power cable is dismantled, the diode bypass is short-circuited, and a temporary power supply branch is put into operation; after new DC power supply equipment is assembled and debugged, a temporary power supply passes through the diode bypass again; and after the normal operation power supply is subjected to pressure welding and put into operation, the temporary power supply stops operating, so that important equipment in the station is not subjected to power failure when the power supply is switched, and the impact of voltage difference on two sets of DC systems and a storage battery pack is avoided.
Description
Technical field
The present invention 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 present invention is directed to 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 present invention 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 present invention is connected with bypass diode with the plug-in type binding post through isolated diode.
When the present invention removes 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 invention.
Embodiment.
Below in conjunction with accompanying drawing the present invention 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 present invention removes 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 |
|---|---|---|---|
| CN 201010565555 CN102064598A (en) | 2010-11-30 | 2010-11-30 | Uninterrupted switching device for DC power supply in transformer substation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010565555 CN102064598A (en) | 2010-11-30 | 2010-11-30 | Uninterrupted switching device for DC power supply in transformer substation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102064598A true CN102064598A (en) | 2011-05-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201010565555 Pending CN102064598A (en) | 2010-11-30 | 2010-11-30 | Uninterrupted switching device for DC power supply in transformer substation |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102064598A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106663928A (en) * | 2014-04-21 | 2017-05-10 | 量子联合有限合伙公司 | Temporary transfer bus |
| CN107834413A (en) * | 2017-12-04 | 2018-03-23 | 国家电网公司 | The device and charging construction method of protection device charged for replacement |
| CN105720680B (en) * | 2014-12-02 | 2018-09-04 | 国家电网公司 | A kind of cell DC load transfer equipment and method |
| CN113471863A (en) * | 2020-03-31 | 2021-10-01 | 中国石油天然气集团有限公司 | Method for maintaining uninterrupted power supply of direct current screen of transformer substation |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2888718Y (en) * | 2006-03-29 | 2007-04-11 | 门宇华 | A non-stop DC operated power supply device for substation |
| CN101820184A (en) * | 2009-02-26 | 2010-09-01 | 中国电信股份有限公司 | Communication power supply system |
| CN201868941U (en) * | 2010-11-30 | 2011-06-15 | 山东电力集团公司威海供电公司 | Uninterrupted switching device for transformer substation direct-current power supply |
-
2010
- 2010-11-30 CN CN 201010565555 patent/CN102064598A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2888718Y (en) * | 2006-03-29 | 2007-04-11 | 门宇华 | A non-stop DC operated power supply device for substation |
| CN101820184A (en) * | 2009-02-26 | 2010-09-01 | 中国电信股份有限公司 | Communication power supply system |
| CN201868941U (en) * | 2010-11-30 | 2011-06-15 | 山东电力集团公司威海供电公司 | Uninterrupted switching device for transformer substation direct-current power supply |
Non-Patent Citations (1)
| Title |
|---|
| 《山东电力技术》 20100430 徐有琳等 变电站直流***改造中电源转接问题的处理 第38页 1-2 , 第173期 * |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106663928A (en) * | 2014-04-21 | 2017-05-10 | 量子联合有限合伙公司 | Temporary transfer bus |
| CN106663928B (en) * | 2014-04-21 | 2019-09-10 | 量子联合有限合伙公司 | Interim transfer bus |
| CN105720680B (en) * | 2014-12-02 | 2018-09-04 | 国家电网公司 | A kind of cell DC load transfer equipment and method |
| CN107834413A (en) * | 2017-12-04 | 2018-03-23 | 国家电网公司 | The device and charging construction method of protection device charged for replacement |
| CN107834413B (en) * | 2017-12-04 | 2023-06-27 | 国家电网公司 | Device for live replacement of protection device and live construction method |
| CN113471863A (en) * | 2020-03-31 | 2021-10-01 | 中国石油天然气集团有限公司 | Method for maintaining uninterrupted power supply of direct current screen of transformer substation |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20110518 |