CN207851205U - Converter Station electricity consumption fault monitoring device - Google Patents
Converter Station electricity consumption fault monitoring device Download PDFInfo
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- CN207851205U CN207851205U CN201820044922.6U CN201820044922U CN207851205U CN 207851205 U CN207851205 U CN 207851205U CN 201820044922 U CN201820044922 U CN 201820044922U CN 207851205 U CN207851205 U CN 207851205U
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- 230000005611 electricity Effects 0.000 title claims abstract description 22
- 238000012806 monitoring device Methods 0.000 title claims abstract description 8
- 230000006837 decompression Effects 0.000 claims abstract description 27
- 238000005070 sampling Methods 0.000 claims abstract description 23
- 238000012544 monitoring process Methods 0.000 claims description 15
- 239000004020 conductor Substances 0.000 claims description 6
- 230000007935 neutral effect Effects 0.000 claims description 6
- 238000006243 chemical reaction Methods 0.000 description 7
- 230000007257 malfunction Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
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- Remote Monitoring And Control Of Power-Distribution Networks (AREA)
Abstract
The utility model discloses a kind of Converter Station electricity consumption fault monitoring devices,Exchange A~C phase outlet joints of air switch are separately connected alternating voltage A~C phases end of incoming cables of under-voltage relay,The public end interface of the common end connection change of current stand control backstage sampling plate of under-voltage relay,The normally opened contact of under-voltage relay is connected between the normally opened decompression alarm signal output ends of voltage of the common end and under-voltage relay of under-voltage relay,The long closed contact of under-voltage relay is connected between the normally closed decompression alarm signal output ends of voltage of the common end and under-voltage relay of under-voltage relay,The normally opened alarm signal input terminal of voltage decompression alarm of the voltage normally opened decompression alarm signal output ends connection change of current stand control backstage sampling plate of under-voltage relay,The normally closed alarm signal input terminal of voltage decompression alarm of the voltage normally closed decompression alarm signal output ends connection change of current stand control backstage sampling plate of under-voltage relay.The device can ensure that station electricity consumption spare power automatic switching system is stable.
Description
Technical field
The utility model is related to power equipment operation and maintenance technical fields, are supervised with electric fault in particular to a kind of Converter Station
Survey device.
Background technology
With the fast development of China's economy, domestic a large amount of DC transmission engineerings put into operation, ensure that straight-flow system is steady
Run ever more important, the high reliability and High Availabitity rate that straight-flow system is pursued, in addition to primary equipment capability and performance and structure are steady
It is qualitative outer, it is also necessary to which that system security is protected by linear quadratic control, it is therefore desirable to which that the reliable power supply for ensureing linear quadratic control protection system changes
Linear quadratic control protection system power by station local coordinate frame in station in stream station, and have it is reliably spare, when incoming power failure all the way
When exiting, spare inlet wire can automatically engage, it is therefore desirable to which reliable malfunction monitoring apparatus, Converter Station electricity consumption 400V is using electricity
Pressing mold analog quantity carries out prepared auto restart logic judgment, and has only taken single-phase voltage, when the single-phase voltage of sampling is less than setting value, backstage
It is determined as failure, then the other power supply all the way of input, there are security risks for this method.It is light then lead to DC system protection device
It is out of service, it is heavy then lead to the single, double pole locking because of single equipment malfunction of entire straight-flow system, seriously threaten straight-flow system
Safe and stable operation.
Utility model content
The purpose of this utility model seeks to provide a kind of Converter Station electricity consumption malfunction monitoring apparatus, the installation cost is low,
Significant effect can ensure that station electricity consumption breakdown judge is accurately stable, action message.
In order to achieve this, a kind of Converter Station electricity consumption fault monitoring device designed by the utility model, feature exist
In：It includes air switch 1UK and under-voltage relay QY1, wherein the exchange A phases lead-in line joint of air switch 1UK, alternating-current B phase
Lead-in line joint is separately connected the A phases, B phases and C phase lines of Converter Station electricity consumption 400V alternating current inlet wires with C phase lead-in line joints are exchanged, empty
Exchange A phases outlet joint, the alternating-current B phase outlet joint of air cock 1UK is separately connected under-voltage relay with C phase outlet joints are exchanged
Alternating voltage A phases end of incoming cables L1, the alternating voltage B phases end of incoming cables L2 and alternating voltage C phases end of incoming cables L3 of QY1, under-voltage relay
The neutral conductor N, under-voltage relay QY1 of the alternating voltage neutral conductor N terminals connection Converter Station electricity consumption 400V alternating current inlet wires of QY1
Common end M1 connection change of current stand controls backstage sampling plate public end interface, the normally opened contact Q1 connections of under-voltage relay QY1
Between the normally opened decompression alarm signal output ends M2 of voltage of the common end M1 and under-voltage relay QY1 of under-voltage relay QY1, owe
The long closed contact Q2 of potential relay QY1 be connected to under-voltage relay QY1 common end M1 and the voltage of under-voltage relay QY1 it is normally closed
Between decompression alarm signal output ends M3, the normally opened decompression alarm signal output ends M2 connections change of current of voltage of under-voltage relay QY1
The normally opened alarm signal input terminal of voltage decompression alarm of stand control backstage sampling plate, the normally closed decompression of voltage of under-voltage relay QY1
The normally closed alarm signal input terminal of voltage decompression alarm of alarm signal output ends M3 connection change of current stand controls backstage sampling plate.
The beneficial effects of the utility model：
The utility model is transformed voltage monitoring circuit, and voltage failure no longer judges incoming power from analog quantity, changes
At alarm signal is sent out when receiving external voltage fault-signal, fault-signal is adopted from the voltage monitoring relay newly added, relay
Collect three-phase voltage, judge whether it is faulty, and by fault-signal input system, help judge power supply whether failure.The present invention at
This low, significant effect can ensure the correctness of station electricity consumption alarm.
Description of the drawings
Fig. 1 is the circuit interconnect pattern of the utility model；
Specific implementation mode
Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail：
A kind of Converter Station electricity consumption fault monitoring device as shown in Figure 1, it is characterised in that：It includes air switch 1UK
With under-voltage relay QY1, wherein the exchange A phases lead-in line joint of air switch 1UK, alternating-current B phase lead-in line joint with exchange C phases into
Wire terminal is separately connected the A phases, B phases and C phase lines of Converter Station electricity consumption 400V alternating current inlet wires, and the exchange A phases of air switch 1UK go out
Wire terminal, alternating-current B phase outlet joint and the alternating voltage A phase inlet wires for exchanging C phase outlet joints and being separately connected under-voltage relay QY1
Hold the alternating voltage neutral conductor N of L1, alternating voltage B phases end of incoming cables L2 and alternating voltage C phases end of incoming cables L3, under-voltage relay QY1
Terminals connect the neutral conductor N of Converter Station electricity consumption 400V alternating current inlet wires, the common end M1 connection current conversion stations of under-voltage relay QY1
The public end interface of control backstage (monitoring backstage) sampling plate, the normally opened contact Q1 of under-voltage relay QY1 are connected to under-voltage relay
Between the normally opened decompression alarm signal output ends M2 of voltage of the common end M1 and under-voltage relay QY1 of device QY1, under-voltage relay
The long closed contact Q2 of QY1 is connected to the normally closed decompression alarm of voltage of the common end M1 and under-voltage relay QY1 of under-voltage relay QY1
Between signal output end M3, after the normally opened decompression alarm signal output ends M2 connections change of current stand control of voltage of under-voltage relay QY1
The normally opened alarm signal input terminal of voltage decompression alarm of platform sampling plate, the normally closed decompression alarm signal of voltage of under-voltage relay QY1
The normally closed alarm signal input terminal of voltage decompression alarm of output end M3 connection change of current stand controls backstage sampling plate.
In above-mentioned technical proposal, it further includes being spaced apart supervisory relay KTJ1, is spaced apart the normally opened of supervisory relay KTJ1 and touches
Point Q3 is connected to the common end N2 for being spaced apart supervisory relay KTJ1 and be spaced apart supervisory relay KTJ1 be spaced apart tripping monitoring signal
Between output end N3, it is spaced apart the common end M1 of the common end N2 connection under-voltage relays QY1 of supervisory relay KTJ1, is spaced apart monitoring
The tripping monitoring that is spaced apart for being spaced apart tripping monitoring signal output end N3 connection change of current stand controls backstage sampling plate of relay KTJ1 is believed
Number input terminal, the plug-in strip mechanical linkage of the normally opened contact Q3 for being spaced apart supervisory relay KTJ1 and air switch 1UK, air are opened
The normally opened contact Q3 for being spaced apart supervisory relay KTJ1 when the plug-in strip closure for closing 1UK is disconnected, and the plug-in strip of air switch 1UK disconnects space-time
The normally opened contact Q3 for opening supervisory relay KTJ1 is closed.
In above-mentioned technical proposal, the public end interface of change of current stand control backstage sampling plate is to under-voltage relay QY1's
Common end M1 provides cathode power supply.The voltage decompression alarm of change of current stand control backstage sampling plate, under-voltage relay QY1 is set normally opened to open
Close M3 forming circuits；Enable common end M1, the under-voltage relay QY1 of change of current stand control backstage sampling plate and under-voltage relay QY1
Voltage normally closed decompression alarm signal output ends M3 forming circuit；Enable change of current stand control backstage sampling plate and under-voltage relay
The normally opened decompression alarm signal output ends M2 forming circuits of the common end M1 of QY1, the voltage of under-voltage relay QY1.Make current conversion station control
Backstage sampling plate processed can and be spaced apart the common end N2 of supervisory relay KTJ1, be spaced apart supervisory relay KTJ1 be spaced apart tripping monitoring
Signal output end N3 forming circuits.
In above-mentioned technical proposal, under-voltage relay QY1 provides normally closed and normally opened two kinds of signals to stream stand control backstage, for after
Platform selects, and increases the flexibility of backstage setting.
In above-mentioned technical proposal, change of current stand control backstage sampling plate uses ABB series boards PS851.Act on prepared auto restart
The condition of judgement action, and judge the whether normal criterion of primary voltage.
The working process of the utility model is as follows：When power supply trouble occurs in the stations current conversion station 400V electricity consumption alternating current circuit, can lead
The A phases of Converter Station electricity consumption 400V alternating current inlet wires, the electric voltage exception of B phases and C phase lines are caused, under-voltage relay QY1 detects above-mentioned
Electric voltage exception, under-voltage relay QY1 actions are detected, the long closed contact Q2 of under-voltage relay QY1 is disconnected, under-voltage relay QY1's
Normally opened contact Q1 is closed, and sends out alarm signal to change of current stand control backstage sampling plate, current conversion station backstage takes corresponding protection dynamic
Make.
When the alternating current circuits current conversion station 400V restore normal, the A phases, B phases and C phases of current conversion station 400V alternating current inlet wires can be caused
The voltage of line restores, after under-voltage relay QY1 detects that above-mentioned detection voltage restores, under-voltage relay QY1 actions, and under-voltage relay
The long closed contact Q2 of device QY1 is closed, and the normally opened contact Q1 of under-voltage relay QY1 is disconnected, and is sent out to change of current stand control backstage sampling plate
Go out and restore signal, corresponding protection operation is taken on current conversion station backstage.
Be spaced apart supervisory relay KTJ1 for monitor air switch 1UK whether fault trip, due to it is described be spaced apart monitoring after
The plug-in strip mechanical linkage of the normally opened contact Q3 and air switch 1UK of electric appliance KTJ1, the plug-in strip of air switch 1UK are spaced apart prison when being closed
Normally opened contact Q3 depending on relay KTJ1 is disconnected, and the plug-in strip of air switch 1UK is spaced apart the normally opened of supervisory relay KTJ1 when disconnecting
Contact Q3 is closed.
The content that this specification is not described in detail belongs to the prior art well known to professional and technical personnel in the field.
Claims (3)
1. a kind of Converter Station electricity consumption fault monitoring device, it is characterised in that：It includes air switch 1UK and under-voltage relay
QY1, wherein exchange A phases lead-in line joint, the alternating-current B phase lead-in line joint of air switch 1UK connects respectively with C phases lead-in line joint is exchanged
Connect the A phases, B phases and C phase lines of Converter Station electricity consumption 400V alternating current inlet wires, the exchange A phases outlet joint of air switch 1UK, alternating-current B
Phase outlet joint is separately connected alternating voltage A phases end of incoming cables L1, the alternating current of under-voltage relay QY1 with C phase outlet joints are exchanged
The connection of the alternating voltage neutral conductor N terminals of pressure B phases end of incoming cables L2 and alternating voltage C phases end of incoming cables L3, under-voltage relay QY1 is changed
The common end M1 connection changes of current stand control backstage of the neutral conductor N of stream station station electricity consumption 400V alternating current inlet wires, under-voltage relay QY1 sample
The public end interface of plate, the normally opened contact Q1 of under-voltage relay QY1 be connected to the common end M1 of under-voltage relay QY1 with it is under-voltage after
Between the normally opened decompression alarm signal output ends M2 of voltage of electric appliance QY1, the long closed contact Q2 of under-voltage relay QY1 is connected to under-voltage
Between the normally closed decompression alarm signal output ends M3 of voltage of the common end M1 and under-voltage relay QY1 of relay QY1, under-voltage relay
The voltage decompression alarm of the normally opened decompression alarm signal output ends M2 connections change of current stand control backstage sampling plate of voltage of device QY1 is normally opened
Alarm signal input terminal, the normally closed decompression alarm signal output ends M3 connection changes of current stand control backstage of voltage of under-voltage relay QY1
The normally closed alarm signal input terminal of voltage decompression alarm of sampling plate.
2. Converter Station electricity consumption fault monitoring device according to claim 1, it is characterised in that：It further includes being spaced apart monitoring
Relay KTJ1, be spaced apart supervisory relay KTJ1 normally opened contact Q3 be connected to be spaced apart the common end N2 of supervisory relay KTJ1 with
It is spaced apart being spaced apart between tripping monitoring signal output end N3 for supervisory relay KTJ1, is spaced apart the common end N2 of supervisory relay KTJ1
The common end M1 for connecting under-voltage relay QY1, be spaced apart supervisory relay KTJ1 is spaced apart tripping monitoring signal output end N3 connections
Change of current stand control backstage sampling plate is spaced apart tripping monitoring signal input terminal, the normally opened contact for being spaced apart supervisory relay KTJ1
The plug-in strip mechanical linkage of Q3 and air switch 1UK, the plug-in strip of air switch 1UK are spaced apart the normally opened of supervisory relay KTJ1 when being closed
Contact Q3 is disconnected, and the plug-in strip of air switch 1UK is spaced apart supervisory relay KTJ1 normally opened contact Q3 when disconnecting is closed.
3. Converter Station electricity consumption fault monitoring device according to claim 1, it is characterised in that：After the change of current stand control
The public end interface of platform sampling plate provides cathode power supply to the common end M1 of under-voltage relay QY1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820044922.6U CN207851205U (en) | 2018-01-11 | 2018-01-11 | Converter Station electricity consumption fault monitoring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820044922.6U CN207851205U (en) | 2018-01-11 | 2018-01-11 | Converter Station electricity consumption fault monitoring device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207851205U true CN207851205U (en) | 2018-09-11 |
Family
ID=63418039
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820044922.6U Active CN207851205U (en) | 2018-01-11 | 2018-01-11 | Converter Station electricity consumption fault monitoring device |
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| Country | Link |
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| CN (1) | CN207851205U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110174886A (en) * | 2019-06-13 | 2019-08-27 | 中广核工程有限公司 | Nuclear power station DCS drive control loop power supply monitors alarm method and its system |
-
2018
- 2018-01-11 CN CN201820044922.6U patent/CN207851205U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110174886A (en) * | 2019-06-13 | 2019-08-27 | 中广核工程有限公司 | Nuclear power station DCS drive control loop power supply monitors alarm method and its system |
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