CN104362729A - Power supply switching device of safety guarantee system - Google Patents
Power supply switching device of safety guarantee system Download PDFInfo
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- CN104362729A CN104362729A CN201410567997.9A CN201410567997A CN104362729A CN 104362729 A CN104362729 A CN 104362729A CN 201410567997 A CN201410567997 A CN 201410567997A CN 104362729 A CN104362729 A CN 104362729A
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Abstract
The invention discloses a power supply switching device of a safety guarantee system. The power supply switching device comprises a diesel generator, a BFA section busbar low voltage relay, a BFB section busbar low voltage relay, a BMA section busbar low voltage relay and an MCC section BMB control system, wherein the MCC section BMB control system is respectively connected with a switch BFA06B, a switch BFB06B and a switch BMA02A through a switch BMB01A, a switch BMB01B and a switch BMB09A, and the switches BFA06B, the switch BFB06B and the switch BMA02A are respectively connected with the BFA section busbar low voltage relay, the BFB section busbar low voltage relay and the BMA section busbar low voltage relay. According to the power supply switching device provided by the invention, even if devices do not need to be installed in a synchronizing way, the quick switchover between a working power supply and a reserve power supply can be realized to ensure the normal power supply of an important load.
Description
Technical field
What the present invention relates to is realize station service security system Power transfer system based on control system logic function, is specifically related to a kind of safe-guard system power transfer device.
Background technology
The oil system that power plant's electricity consumption security personnel section is steam turbine, the oil system of Important Auxiliary equipment provide emergency power supply, ensure that the load of oil system can not power-off when there is the accident that station service loses.For ensureing the normal switching of security personnel's section power supply, generally need synchronous device to be installed, to realize the quick switching of working power and stand-by power supply.And synchronous device is installed, costly, maintenance workload is large.
Summary of the invention
For the deficiency that prior art exists, the present invention seeks to be to provide a kind of safe-guard system power transfer device, do not need synchronous device is installed, the quick switching of working power and stand-by power supply can be realized, ensure that important load is powered normally.
To achieve these goals, the present invention realizes by the following technical solutions: a kind of safe-guard system power transfer device, comprises diesel engine generator, BFA section bus under-voltage replay, BFB section bus under-voltage replay, BMA section bus under-voltage replay and MCC section BMB control system, MCC section BMB control system is by switch BMB01A, switch BMB01B, switch BMB09A respectively with switch BFA06B, switch BFB06B, switch BMA02A is connected, switch BFA06B, switch BFB06B, switch BMA02A respectively with BFA section bus under-voltage replay, BFB section bus under-voltage replay, BMA section bus under-voltage replay is connected, BFA section bus under-voltage replay, BFB section bus under-voltage replay, BMA section bus under-voltage replay is all connected with respective power supply, BMA section bus under-voltage replay is also connected with diesel engine generator gate out switch GH001 by switch BMA04A, diesel engine generator gate out switch GH001 is connected with diesel engine generator, BFA section bus under-voltage replay, BFB section bus under-voltage replay, BMA section bus under-voltage replay and MCC section BMB control system are separately positioned on BFA bus PT cabinet, BFB bus PT cabinet, BMA bus PT cabinet and MCC bus PT cabinet inside.
As preferably, in described BFA, BFB bus PT cabinet, 2 under-voltage replays are set, for sending signal to control system when bus low-voltage, disconnect the mains switch of powering to security personnel MCC section, realizing the interlocking of security personnel's section.
As preferably, in security personnel MCC section bus PT cabinet, 2 under-voltage replays are set, for sending signal to control system when bus low-voltage, the self-starting that the motor of the interlocking and the control of 380V contactor that realize security personnel's section is sent a telegram here after short supply interruption.
As preferably, when BFA section dead electricity, the automatic cut-off switch BFA06B of bus low-voltage, connection TRIP BMB01A after switch BFA06B trips, after switch BMB01A trips and security personnel's MCC bus low voltage signal occur, the automatic combination switch BMB01B of control system, security personnel MCC switches to and is powered by BFB section.
As preferably, if BFB section now also dead electricity, the automatic cut-off switch BFB06B of BFB bus low-voltage, switch BMB01B cannot close a floodgate, BMB bus low voltage signal occurs, time delay 3 seconds, control system starts diesel engine generator automatically, diesel engine generator starts normally from dynamic circuit connector diesel engine generator gate out switch, the automatic combination switch BMA04A of control system, the automatic combination switch BMA02A of control system, now BFA06B, BMB01A, BFB06B, BMB01B tetra-switches are all at gate-dividing state, BMB bus low voltage signal exists, the automatic combination switch BMB09A of control system, security personnel MCC switches to diesel engine generator to power.
As preferably, after BFA section, BFB section voltage resume are normal, manually close a switch BFA06B, switch BFB06B, diesel engine generator of manually stopping transport, and diesel engine generator gate out switch disconnects immediately, the automatic cut-off switch BMA04A of control system, the automatic cut-off switch BMA02A of control system, switch BMB09A joins jumping, and switch BMB01B is blocked combined floodgate because switch BFA06B closes a floodgate, switch BMB01A combined floodgate condition meets automatic closing, and security personnel MCC switches to BFA section to power
Security personnel MCC section of the present invention is by 3 road Power supplies, and respectively from BFA section, BFB section and unit security personnel PC section BMA, diesel engine generator is powered to unit security personnel PC section BMA when accident, and security personnel MCC section BMB has 3 service entrance switchs, respectively corresponding 3 mains switches; Diesel engine generator has a gate out switch, and the present invention relates to the control of 7 switches altogether.
The present invention has following beneficial effect:
1, cost is low, does not need to install synchronous device.
2, stability is high, and in system, hardware device is few, decreases the chance that fault occurs.
3, reliability is high, the MCC power supply of ensureing to ensure public security quick, reliably switch, ensure that important load can not lose power supply.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is circuit diagram of the present invention.
Embodiment
Below in conjunction with accompanying drawing, the preferred embodiments of the present invention are described in detail, can be easier to make advantages and features of the invention be readily appreciated by one skilled in the art, thus more explicit defining is made to protection scope of the present invention.
With reference to Fig. 1, this embodiment by the following technical solutions: a kind of safe-guard system power transfer device, comprises diesel engine generator G, BFA section bus under-voltage replay 1, BFB section bus under-voltage replay 2, BMA section bus under-voltage replay 3 and MCC section BMB control system 4, MCC section BMB control system 4 are by switch BMB01A, switch BMB01B, switch BMB09A respectively with switch BFA06B, switch BFB06B, switch BMA02A is connected, switch BFA06B, switch BFB06B, switch BMA02A respectively with BFA section bus under-voltage replay 1, BFB section bus under-voltage replay 2, BMA section bus under-voltage replay 3 is connected, BFA section bus under-voltage replay 1, BFB section bus under-voltage replay 2, BMA section bus under-voltage replay 3 is all connected with respective power supply, BMA section bus under-voltage replay 3 is also connected with diesel engine generator gate out switch GH001 by switch BMA04A, diesel engine generator gate out switch GH001 is connected with diesel engine generator G, BFA section bus under-voltage replay, BFB section bus under-voltage replay, BMA section bus under-voltage replay and MCC section BMB control system are separately positioned on BFA bus PT cabinet, BFB bus PT cabinet, BMA bus PT cabinet and MCC bus PT cabinet inside.
The operation principle of this embodiment is: 1) arrange 2 under-voltage replays in BFA, BFB bus PT cabinet, for sending signal to control system when bus low-voltage, disconnecting the mains switch of powering to security personnel MCC section, realizing the interlocking of security personnel's section;
2) ensure public security in MCC section bus PT cabinet and 2 under-voltage replays are set, for sending signal to control system when bus low-voltage, the self-starting that the motor of the interlocking and the control of 380V contactor that realize security personnel's section is sent a telegram here after short supply interruption;
3) when BFA section dead electricity, connection TRIP BMB01A after the automatic cut-off switch BFA06B of bus low-voltage, switch BFA06B tripping operation, after switch BMB01A trips and security personnel MCC bus low voltage signal occur, the automatic combination switch BMB01B of control system, security personnel MCC switches to and is powered by BFB section;
4) if BFB section now also dead electricity, the automatic cut-off switch BFB06B of BFB bus low-voltage, switch BMB01B cannot close a floodgate, BMB bus low voltage signal occurs, time delay 3 seconds, control system starts diesel engine generator automatically, diesel engine generator starts normally from dynamic circuit connector diesel engine generator gate out switch, the automatic combination switch BMA04A of control system, the automatic combination switch BMA02A of control system, now BFA06B, BMB01A, BFB06B, BMB01B tetra-switches are all at gate-dividing state, BMB bus low voltage signal exists, the automatic combination switch BMB09A of control system, security personnel MCC switches to diesel engine generator to power,
5) after BFA section, BFB section voltage resume are normal, manually close a switch BFA06B, switch BFB06B, manual stoppage in transit diesel engine generator, diesel engine generator gate out switch disconnects immediately, the automatic cut-off switch BMA04A of control system, the automatic cut-off switch BMA02A of control system, switch BMB09A joins jumping, switch BMB01B is blocked combined floodgate because switch BFA06B closes a floodgate, and switch BMB01A combined floodgate condition meets automatic closing, and security personnel MCC switches to BFA section to power.
The power interlock relation of this embodiment security personnel MCC is based on the normal work of BFA section bus under-voltage replay, BFB section bus under-voltage replay, BMB bus under-voltage replay.Therefore the under-voltage replay of good quality must be selected, normal operation must ensure that under-voltage replay is working properly.
This embodiment does not need to install synchronous device, can realize the quick switching of working power and stand-by power supply, ensure that important load is powered normally.
More than show and describe general principle of the present invention and principal character and advantage of the present invention.The technical staff of the industry should understand; the present invention is not restricted to the described embodiments; what describe in above-described embodiment and specification just illustrates principle of the present invention; without departing from the spirit and scope of the present invention; the present invention also has various changes and modifications, and these changes and improvements all fall in the claimed scope of the invention.Application claims protection range is defined by appending claims and equivalent thereof.
Claims (6)
1. a safe-guard system power transfer device, is characterized in that, comprises diesel engine generator (G), BFA section bus under-voltage replay (1), BFB section bus under-voltage replay (2), BMA section bus under-voltage replay (3) and MCC section BMB control system (4), MCC section BMB control system (4) is by switch BMB01A, switch BMB01B, switch BMB09A respectively with switch BFA06B, switch BFB06B, switch BMA02A is connected, switch BFA06B, switch BFB06B, switch BMA02A respectively with BFA section bus under-voltage replay (1), BFB section bus under-voltage replay (2), BMA section bus under-voltage replay (3) is connected, BFA section bus under-voltage replay (1), BFB section bus under-voltage replay (2), BMA section bus under-voltage replay (3) is all connected with respective power supply, BMA section bus under-voltage replay (3) is also connected with diesel engine generator gate out switch GH001 by switch BMA04A, diesel engine generator gate out switch GH001 is connected with diesel engine generator (G), BFA section bus under-voltage replay (1), BFB section bus under-voltage replay (2), BMA section bus under-voltage replay (3) and MCC section BMB control system (4) are separately positioned on BFA bus PT cabinet, BFB bus PT cabinet, BMA bus PT cabinet and MCC bus PT cabinet inside.
2. safe-guard system power transfer device as claimed in claim 1, it is characterized in that: in described BFA, BFB bus PT cabinet, 2 under-voltage replays are set, for sending signal to control system when bus low-voltage, disconnect the mains switch of powering to security personnel MCC section, realize the interlocking of security personnel's section.
3. safe-guard system power transfer device as claimed in claim 1, it is characterized in that: in security personnel MCC section bus PT cabinet, 2 under-voltage replays are set, for sending signal to control system when bus low-voltage, realize the self-starting that motor that the interlocking of security personnel's section and 380V contactor control is sent a telegram here after short supply interruption.
4. safe-guard system power transfer device as claimed in claim 1, it is characterized in that: when BFA section dead electricity, the automatic cut-off switch BFA06B of bus low-voltage, connection TRIP BMB01A after switch BFA06B trips, switch BMB01A trips afterwards and security personnel MCC bus low voltage signal occurs, the automatic combination switch BMB01B of control system, security personnel MCC switches to and is powered by BFB section.
5. safe-guard system power transfer device as claimed in claim 1, it is characterized in that: if BFB section now also dead electricity, the automatic cut-off switch BFB06B of BFB bus low-voltage, switch BMB01B cannot close a floodgate, BMB bus low voltage signal occurs, time delay 3 seconds, control system starts diesel engine generator automatically, diesel engine generator starts normally from dynamic circuit connector diesel engine generator gate out switch, the automatic combination switch BMA04A of control system, the automatic combination switch BMA02A of control system, now BFA06B, BMB01A, BFB06B, BMB01B tetra-switches are all at gate-dividing state, BMB bus low voltage signal exists, the automatic combination switch BMB09A of control system, security personnel MCC switches to diesel engine generator to power.
6. safe-guard system power transfer device as claimed in claim 1, it is characterized in that: after BFA section, BFB section voltage resume are normal, manually close a switch BFA06B, switch BFB06B, manual stoppage in transit diesel engine generator, diesel engine generator gate out switch disconnects immediately, the automatic cut-off switch BMA04A of control system, the automatic cut-off switch BMA02A of control system, switch BMB09A joins jumping, switch BMB01B is blocked combined floodgate because switch BFA06B closes a floodgate, switch BMB01A combined floodgate condition meets automatic closing, and security personnel MCC switches to BFA section to power.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410567997.9A CN104362729A (en) | 2014-10-15 | 2014-10-15 | Power supply switching device of safety guarantee system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410567997.9A CN104362729A (en) | 2014-10-15 | 2014-10-15 | Power supply switching device of safety guarantee system |
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|---|---|
| CN104362729A true CN104362729A (en) | 2015-02-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410567997.9A Pending CN104362729A (en) | 2014-10-15 | 2014-10-15 | Power supply switching device of safety guarantee system |
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| CN (1) | CN104362729A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110768370A (en) * | 2019-10-18 | 2020-02-07 | 杭州东氿科技有限公司 | Intelligent control system and method for electrical equipment of power supply and distribution system |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5939798A (en) * | 1997-06-17 | 1999-08-17 | General Electric Company | Hybrid energy storage system |
| CN203871919U (en) * | 2013-12-12 | 2014-10-08 | 大唐阳城发电有限责任公司 | Fast switching system of power sources |
-
2014
- 2014-10-15 CN CN201410567997.9A patent/CN104362729A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5939798A (en) * | 1997-06-17 | 1999-08-17 | General Electric Company | Hybrid energy storage system |
| CN203871919U (en) * | 2013-12-12 | 2014-10-08 | 大唐阳城发电有限责任公司 | Fast switching system of power sources |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110768370A (en) * | 2019-10-18 | 2020-02-07 | 杭州东氿科技有限公司 | Intelligent control system and method for electrical equipment of power supply and distribution system |
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Application publication date: 20150218 |
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