CN203674786U - Voltage parallel cabinet AC voltage output apparatus - Google Patents
Voltage parallel cabinet AC voltage output apparatus Download PDFInfo
- Publication number
- CN203674786U CN203674786U CN201320773508.6U CN201320773508U CN203674786U CN 203674786 U CN203674786 U CN 203674786U CN 201320773508 U CN201320773508 U CN 201320773508U CN 203674786 U CN203674786 U CN 203674786U
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- voltage
- power supply
- intermediate relay
- auxiliary relay
- group
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- 230000001681 protective Effects 0.000 abstract description 4
- 241001489523 Coregonus artedi Species 0.000 description 1
- 206010063829 Device malfunction Diseases 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
Abstract
Disclosed is a voltage parallel cabinet AC voltage output apparatus including: a voltage parallel apparatus and a first set of DC power supplies which is connected to a power supply terminal of the voltage parallel apparatus by an intermediate relay 1DK. The voltage output apparatus is characterized in that an intermediate relay 1ZJ is connected to the first set of DC power supplies; and the output apparatus is also provided with a second set of DC power supplies which is connected to the power supply terminal of the voltage parallel apparatus by an intermediate relay 2DK and normally closed contacts 1ZJ-1 and 1ZJ-2 of the intermediate relay 1ZJ in series. The second set of DC power supplies is connected to an intermediate relay 2ZJ; and the normally open contact 1ZJ1 of the intermediate relay 1ZJ for prompting the working status, the normally open contact 2ZJ1 of the intermediate relay 2ZJ and the normally open contact 2ZJ2 of the intermediate relay 2ZJ for providing the alarm signal are connected in the signal loop in series separately. The voltage parallel apparatus is capable of working in a stable and continuous state. The reliability of the power supply of the AC voltage output apparatus is ensured and the necessary conditions of the correct motion of the protective apparatus and the automatic safety apparatus are provided.
Description
Technical field
The utility model relates to the voltage cabinet alternating voltage arranged side by side output device that a kind of transformer station is used.
Background technology
At present; in transformer station, voltage parallel device is only connected to a road DC power supply; if DC power supply breaks down; voltage parallel device is by cisco unity malfunction; I, II section bus that substation connects are by decompression; will there is tripping in the line protective devices such as pilot protection, distance protection relevant with voltage in transformer station, the accidents such as backup auto-activating device malfunction simultaneously and low all device trippings also can occur.The malfunction of protection makes troubles to user's normal electricity consumption; the tripping of device can make to protect overstep tripping, expands power failure area, when the most serious situation, can make mains breakdown; bring tremendous influence to the people's daily life, bring huge economic loss to power consumer.Meanwhile, also can bring very large impact to the metering device of transformer station, the precision of metering is reduced, directly affect economic benefit.
Utility model content
The technical problems to be solved in the utility model is to provide a kind of voltage cabinet alternating voltage arranged side by side output device, ensures that voltage parallel device can be stablized, continuous output secondary voltage, for the correct operation of protective device and automatic safety device provides necessary condition.
The voltage cabinet alternating voltage arranged side by side output device that the utility model relates to, comprise voltage parallel device, be connected on first group of DC power supply of voltage parallel device power end by auxiliary relay 1DK, its special character is: in first group of DC power supply, be connected to auxiliary relay 1ZJ, this output device is also provided with second group of DC power supply, described second group of DC power supply is by the auxiliary relay 2DK of series connection and the normally-closed contact 1ZJ-1 of auxiliary relay 1ZJ, 1ZJ-2 is connected with voltage parallel device power end, in second group of DC power supply, be connected to auxiliary relay 2ZJ, be used for the normally opened contact 1ZJ1 of the auxiliary relay 1ZJ that points out operating state, the normally opened contact 2ZJ1 of auxiliary relay 2ZJ and be serially connected in respectively signal circuit for the normally opened contact 2ZJ 2 that alarm signal is provided.
The beneficial effects of the utility model are: the in the situation that of first group of DC supply interruption; automatically switch by relay; directly second group of DC power supply come into operation; make voltage parallel device in stable, continuous operating state; ensure the reliability of alternating voltage output device power supply, for the correct operation of protective device and automatic safety device provides necessary condition.Normally opened contact 2ZJ 2 closures of auxiliary relay 2ZJ, send alarm signal simultaneously, notify operations staff to process in time.
Brief description of the drawings
Fig. 1 is circuit structure diagram of the present utility model.
Embodiment
As shown in the figure, the utility model comprises voltage parallel device, the first group of DC power supply BM1 that is connected on voltage parallel device power end by auxiliary relay 1DK and fuse is connected to auxiliary relay 1ZJ on first group of DC power supply BM1, and this output device is also provided with second group of DC power supply BM
2, described second group of DC power supply BM
2normally-closed contact 1ZJ-1, the 1ZJ-2 of auxiliary relay 2DK, fuse and auxiliary relay 1ZJ by series connection is connected with voltage parallel device power end, at second group of DC power supply BM
2on be connected to auxiliary relay 2ZJ, for point out operating state auxiliary relay 1ZJ normally opened contact 1ZJ1, auxiliary relay 2ZJ normally opened contact 2ZJ1 and be serially connected in respectively signal circuit for the normally opened contact 2ZJ 2 that alarm signal is provided.
Claims (1)
1. voltage cabinet alternating voltage arranged side by side output device, comprise voltage parallel device, be connected on first group of DC power supply of voltage parallel device power end by auxiliary relay 1DK, it is characterized in that: in first group of DC power supply, be connected to auxiliary relay 1ZJ, this output device is also provided with second group of DC power supply, described second group of DC power supply is by the auxiliary relay 2DK of series connection and the normally-closed contact 1ZJ-1 of auxiliary relay 1ZJ, 1ZJ-2 is connected with voltage parallel device power end, in second group of DC power supply, be connected to auxiliary relay 2ZJ, be used for the normally opened contact 1ZJ1 of the auxiliary relay 1ZJ that points out operating state, the normally opened contact 2ZJ1 of auxiliary relay 2ZJ and be serially connected in respectively signal circuit for the normally opened contact 2ZJ 2 that alarm signal is provided.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320773508.6U CN203674786U (en) | 2013-12-02 | 2013-12-02 | Voltage parallel cabinet AC voltage output apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320773508.6U CN203674786U (en) | 2013-12-02 | 2013-12-02 | Voltage parallel cabinet AC voltage output apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203674786U true CN203674786U (en) | 2014-06-25 |
Family
ID=50971038
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320773508.6U Active CN203674786U (en) | 2013-12-02 | 2013-12-02 | Voltage parallel cabinet AC voltage output apparatus |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203674786U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CZ305793B6 (en) * | 2015-04-20 | 2016-03-16 | České vysoké učení technické v Praze, Fakulta dopravní | Circuit arrangement for permanent feeding of electronic units in a network disconnected from a power supply unit |
-
2013
- 2013-12-02 CN CN201320773508.6U patent/CN203674786U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CZ305793B6 (en) * | 2015-04-20 | 2016-03-16 | České vysoké učení technické v Praze, Fakulta dopravní | Circuit arrangement for permanent feeding of electronic units in a network disconnected from a power supply unit |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |