CN208690162U - A kind of monitoring indicating circuit of power switch vacuum circuit breaker - Google Patents
A kind of monitoring indicating circuit of power switch vacuum circuit breaker Download PDFInfo
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- CN208690162U CN208690162U CN201821467462.4U CN201821467462U CN208690162U CN 208690162 U CN208690162 U CN 208690162U CN 201821467462 U CN201821467462 U CN 201821467462U CN 208690162 U CN208690162 U CN 208690162U
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- normally closed
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- circuit breaker
- closed contact
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Abstract
The utility model discloses a kind of monitoring indicating circuit of power switch vacuum circuit breaker, it is arranged in the combined floodgate circuit of power switch vacuum circuit breaker, combined floodgate circuit includes auxiliary switch, operating position normal opened contact and test position normally closed contact and closing locking rectifier bridge, it further include closing locking electromagnet and closing coil rectifier bridge, it further include combined floodgate tripping relay, it is characterized by: being equipped with the monitoring including indicator light indicates branch, one end of first normally closed contact of one end and auxiliary switch, one end of operating position normal opened contact and one end connection for testing position normally closed contact, one end of second normally closed contact of the other end and auxiliary switch of the normal opened contact of its other end and latching electromagnet connects.The utility model composition is simple, easy for installation, can the closing locking electromagnet circuit to power switch vacuum circuit breaker implement effectively reliable monitoring instruction, it is ensured that generating set safe and reliable operation has significant economic benefit and social benefit.
Description
Technical field
The utility model relates to vacuum circuit breaker, the monitoring more particularly to a kind of power switch vacuum circuit breaker indicates electricity
Road.
Background technique
The ABB switch VD4 vacuum circuit breaker total that certain 4 × 300MW thermal power plant uses exceedes 200, once recurs and follows
The failure that ring water pump causes switch that can not close a floodgate because the closing locking electromagnet of 6kV ABB switch VD4 vacuum circuit breaker damages,
Generating set is influenced to adjust in time.The event of the latching electromagnet damage of 6kV emergency power supply of bus switch, coal pulverizer power switch
Also occurred a lot of.6kV emergency power supply of bus switchs the damage of closing locking electromagnet, then cannot be normal spare, if not in time
It was found that once generating set trips, backup power source is refused to close, and accident can expand.The Important Auxiliary equipment power switch of such as coal pulverizer closes
The damage of lock latching electromagnet, then cannot start subsidiary engine in time, influence generating set safe operation and load adjustment.Existing ABB is opened
The control circuit for closing VD4 vacuum circuit breaker, which is not yet arranged, monitors indicating circuit to the combined floodgate of combined floodgate latching electromagnet, directly affects
The operation of vacuum circuit breaker and spare seriously affects generating set safe operation and load adjustment.
Summary of the invention
Technical problem to be solved in the utility model is to make up the defect of the above-mentioned prior art, provides a kind of power switch
The monitoring indicating circuit of vacuum circuit breaker.
The technical issues of the utility model, is resolved by the following technical programs.
The combined floodgate electricity of power switch vacuum circuit breaker is arranged in the monitoring indicating circuit of this power switch vacuum circuit breaker
Lu Zhong, the combined floodgate circuit include:
Auxiliary switch, the operating position normal opened contact being connect respectively with one end of the first normally closed contact of the auxiliary switch and
Position normally closed contact is tested, and the closing locking rectification connecting with the other end of the first normally closed contact of the auxiliary switch
Bridge, the operating position normal opened contact and test position normally closed contact are connect with one end of control power supply respectively, and the closing locking is used
The other end of first normally closed contact of an input terminal and auxiliary switch for rectifier bridge is connect, the closing locking rectifier bridge
Another input terminal with publicly connect；
It further include the closing locking electromagnet that its coil is connected to two output ends of the closing locking rectifier bridge, and
One input terminal of closing coil rectifier bridge, the closing coil rectifier bridge is connect with one end of control power supply, another input
It holds and publicly connect；
It further include the combined floodgate tripping relay that one end of its coil is connect with an output end of closing coil rectifier bridge
The other end of device, the combined floodgate tripping relay coil is connect with one end of the normal opened contact of the latching electromagnet, described to close
The other end for locking the normal opened contact of electromagnet is connect with one end of the second normally closed contact of the auxiliary switch.
The characteristics of monitoring indicating circuit of this power switch vacuum circuit breaker, is:
Branch is indicated equipped with the monitoring for including indicator light, the of one end of the monitoring instruction branch and the auxiliary switch
One end of one normally closed contact, operating position normal opened contact one end, and one end connection of test position normally closed contact, the monitoring refer to
Show that the other end of the other end of branch and the normal opened contact of the latching electromagnet and the second of the auxiliary switch normally closed connect
One end connection of point.The monitoring instruction branch is for power switch vacuum circuit breaker in test position, that is, sub-gate position and stand-by heat
Reliably monitoring includes closing locking electromagnet and its contact, energy storage contact, auxiliary switch contact, closing locking with whole under state
Whether normal flow bridge, closing coil rectifier bridge, the combined floodgate circuit of combined floodgate tripping relay, it is ensured that usually inspection discovery is closed a floodgate electric
The exception on road guarantees that equipment is spare reliable so as to advanced processing defect.
The technical issues of the utility model, is resolved by technical solution further below.
The monitoring indicates that branch further includes and the concatenated resistance of the indicator light.
The technical issues of the utility model, is resolved by following further technical solution.
The described and concatenated resistance of indicator light is one of current-limiting resistance and dropping resistor.
The indicator light is one of light emitting diode, bulb and neon bulb indicator light.
Preferably, it is 13mA green LED below that the indicator light, which is running current, and calorific value is small, safety
Reliably.
Preferably, the green LED is mounted at the panel cut out of power switch vacuum circuit breaker, from auxiliary
The first normally closed contact of switch, the second normally closed contact is helped to draw the both ends that flexible circuit conductor is connected to monitoring instruction branch respectively.
The combined floodgate circuit further includes that one end of its coil is connect with an output end of closing coil rectifier bridge
Anti-trip relay, the other end of the coil of the anti-trip relay are connect with one end of anti-jump resistance, the other end of anti-jump resistance
It is connect respectively with one end of the normal opened contact of the anti-trip relay and the normal opened contact of the auxiliary switch, the anti-jump relay
The other end of the normal opened contact of the normal opened contact of device and the auxiliary switch is another with the closing coil rectifier bridge respectively
Output end connection, another output end of the other end of the normally closed contact of the anti-trip relay and the closing coil rectifier bridge
Connection.
The combined floodgate circuit further includes energy storage contact, and the second of one end of the energy storage contact and the auxiliary switch is normally closed
The other end of contact connects, and the other end of the energy storage contact is connect with one end of the normally closed contact of the anti-trip relay.
The beneficial effect of the utility model compared with prior art is:
The utility model composition is simple, easy for installation, can closing locking electromagnet to power switch vacuum circuit breaker
Implement effectively reliable monitoring instruction in circuit, it is ensured that generating set safe and reliable operation has significant economic benefit and society
Benefit.
Detailed description of the invention
Fig. 1 is circuit diagram of the specific embodiment of the present invention in ABB switch VD4 vacuum circuit breaker.
Specific embodiment
With reference to embodiment and compares attached drawing the utility model is illustrated.
A kind of monitoring indicating circuit of ABB switch VD4 vacuum circuit breaker as shown in Figure 1, setting is in southern china fire
In the combined floodgate circuit of 1 6KVABB switch VD4 vacuum circuit breaker of power plant, combined floodgate circuit includes:
Auxiliary switch S3, the operating position connecting respectively with one end of the first normally closed contact S3-1 of auxiliary switch S3 is normally opened connects
Point S9 and test position normally closed contact S8, and the combined floodgate connecting with normal first other end for closing contact S3-1 of auxiliary switch S3 close
Lock rectifier bridge V1, operating position normal opened contact S9 and test position normally closed contact S8 are connect with one end of control power supply respectively, are closed a floodgate
Locking is connect with an input terminal of rectifier bridge V1 with the other end of the first normally closed contact S3-1 of auxiliary switch S3, and closing locking is used
Another input terminal of rectifier bridge V1 with publicly connect；
It further include the closing locking electromagnet Y1 for two output ends that its coil is connected to closing locking rectifier bridge V1, and
Closing coil rectifier bridge V3, closing coil are connect with an input terminal of rectifier bridge V3 with one end of control power supply, another input
It holds and publicly connect；
Further include its coil one end connect respectively with closing coil with an output end of rectifier bridge V3 combined floodgate tripping after
The other end of electric appliance Y3 and anti-trip relay K0 and energy storage contact S1, combined floodgate tripping relay Y3 are with latching electromagnet Y1's
One end of normal opened contact S2 connects, and the second of the other end of the normal opened contact S2 of latching electromagnet Y1 and auxiliary switch S3 is normally closed to be connect
One end of point S3-2 connects, and the other end of anti-trip relay K0 coil is connect with one end of anti-jump resistance R0, anti-jump resistance R0's
The other end is connect with one end of the normal opened contact S3-3 of the normal opened contact K0-1 of anti-trip relay K0 and auxiliary switch S3 respectively, is prevented
The other end of the normal opened contact S3-3 of the normal opened contact K0-1 and auxiliary switch S3 of relay K0 are jumped respectively with closing coil with whole
Flow another output end connection of bridge V3, the other end and closing coil rectifier bridge V3 of the normally closed contact K0-2 of anti-trip relay K0
The connection of another output end, the other end of the second normally closed contact S3-2 of one end and auxiliary switch S3 of energy storage contact S1 connect,
One end of the normally closed contact K0-2 of the other end and anti-trip relay K0 of energy storage contact S1 is connect.
Equipped with the green LED by model AD11-22/21-9GZ as indicator light LD and its current-limiting resistance RLD
The monitoring instruction branch being composed in series, green LED are mounted on the panel cut out of 6KVABB switch VD4 vacuum circuit breaker
Place, draws 1.5mm from the first normally closed contact S3-1, the second normally closed contact S3-2 of auxiliary switch S3 respectively2Insulating soft wire,
It is protected with soft tube winding, is pierced by behind the first normally closed contact of auxiliary switch S3 S3-1, the second normally closed contact S3-2,
It is fixed on the right frame of 6KVABB switch VD4 vacuum circuit breaker, then is connected to and is mounted on 6KVABB switch VD4 vacuum circuit breaker
The both ends of monitoring instruction branch at the panel cut out of device, notice that tail portion will avoid other components when installing indicator light LD, protect
Enough spacing are stayed, smooth vertical and horizontal fixation is wanted in wiring, and line will package line code mark, indicates source, the trend of conducting wire, line fork
It to be fastened when crimping, it is ensured that do not fall off.
One end of the first normally closed contact S3-1 of one end and auxiliary switch S3 of monitoring instruction branch, operating position normal opened contact
One end of S9, and one end connection of test position normally closed contact S8, monitor the normal of the other end and latching electromagnet for indicating branch
Open the other end of contact S2 and one end connection of the second normally closed contact S3-2 of auxiliary switch S3.Monitoring instruction branch is used for
6KV ABB switch VD4 vacuum circuit breaker can in the case where there are electricity i.e. sub-gate position in test position and control power supply or are in hot stand-by duty
By ground, monitoring includes closing locking electromagnet and its contact, energy storage contact, auxiliary switch contact, closing locking rectifier bridge, closes
Whether brake cable circle rectifier bridge, the combined floodgate circuit of combined floodgate tripping relay are normal, it is ensured that usually inspection finds the different of combined floodgate circuit
Often, so as to advanced processing defect, guarantee that equipment is spare reliable.
When the combined floodgate operation of 6KVABB switch VD4 vacuum circuit breaker, the second normally closed contact S3-2 of auxiliary switch S3 and locking
The normal opened contact S2 of electromagnet Y1 is simultaneously switched off, and monitoring instruction branch is isolated in other circuits with combined floodgate circuit, monitoring instruction branch
One end power loss, indicator light LD do not work, the operation conditions in effective monitoring combined floodgate circuit.
6KVABB switch VD4 vacuum circuit breaker test position and control power supply have electricity i.e. sub-gate position or be in stand-by heat shape
Under state, one end of power supply is controlled by operating position normal opened contact S9 and test position normally closed contact S8, indicator light LD and its current limliting electricity
RLD, the normal opened contact S2 of latching electromagnet Y1 in closed state, combined floodgate tripping relay Y3 coil to closing coil is hindered to use
Publicly, indicator light LD is just always on rectifier bridge V3, indicates that latching electromagnet Y1 and its combined floodgate circuit are normal；Excluding indicator light
Under the premise of LD itself or its connecting line do not connect firm failure, any component includes closing locking electromagnet in combined floodgate circuit
Contact, energy storage contact, auxiliary switch contact and the damage of power supply secondary plug or arrive correct position, monitoring indicates branch
One end power loss, indicator light LD do not work, and instruction combined floodgate circuit is faulty, and equipment is spare unreliable, need to check and handle.
After present embodiment is implemented, the reliability of generating set Important Auxiliary equipment and Backup Power Switch is improved, really
Protect generating set the safe and economic operation, it is ensured that generating set load can open backed-up auxiliary when increasing in time, it is ensured that backup power source
Switch can correctly put into operation in working power switch fault, it is ensured that not lose scheduling load because subsidiary engine does not put into operation, it is ensured that
Electrically driven feed pump switch does not put into operation and leads to the serious accidents such as the dry pot of boiler when not occurring generating set accident chaser.
It is calculated according to needing to open a coal pulverizer when increasing load, coal pulverizer is extremely thrown due to latching electromagnet damage replacement
Enter operation, about need 1 hour, 1 hour 50000 KW h of loss load of generating set, needs to increase to from 20MW according to assuming to dispatch
25MW is calculated, and single increases by 1.25 ten thousand yuan, and according to 4 times/platform year, four units can increase income 1.25 ten thousand yuan × 16=200,000
Member.This is only calculated from simple economic angle, does not include since Load adjustment receives dispatching management of electric power system body not in time
The examination of system, generating set performance evaluation etc. caused by lose.
It, cannot the above content is specific preferred embodiment further detailed description of the utility model is combined
Assert that the specific implementation of the utility model is only limited to these instructions.For the ordinary skill of the utility model technical field
For personnel, make several equivalent substitute or obvious modifications without departing from the concept of the premise utility, and performance or
Purposes is identical, all shall be regarded as belonging to the utility model scope of patent protection determined by the appended claims.
Claims (8)
1. a kind of monitoring indicating circuit of power switch vacuum circuit breaker, is arranged in the combined floodgate circuit of power switch vacuum circuit breaker
In, the combined floodgate circuit includes:
Auxiliary switch, the operating position normal opened contact being connect respectively with one end of the first normally closed contact of the auxiliary switch and test
Position normally closed contact, and the closing locking rectifier bridge being connect with the other end of the first normally closed contact of the auxiliary switch, institute
It states operating position normal opened contact and tests position normally closed contact and connect respectively with one end of control power supply, the closing locking rectifier bridge
An input terminal connect with the other end of the first normally closed contact of the auxiliary switch, the closing locking rectifier bridge it is another
Input terminal with publicly connect；
Further include the closing locking electromagnet that its coil is connected to two output ends of the closing locking rectifier bridge, and closes a floodgate
Coil rectifier bridge, an input terminal of the closing coil rectifier bridge connects with one end of control power supply, another input terminal and
Publicly connect；
It further include the combined floodgate tripping relay that one end of its coil is connect with an output end of closing coil rectifier bridge, institute
The other end for stating combined floodgate tripping relay coil is connect with one end of the normal opened contact of the latching electromagnet, the locking electromagnetism
The other end of the normal opened contact of iron is connect with one end of the second normally closed contact of the auxiliary switch,
It is characterized by:
Equipped with include indicator light monitoring indicate branch, it is described monitoring instruction branch one end and the auxiliary switch first often
Close one end of contact, one end of operating position normal opened contact, and one end connection of test position normally closed contact, the monitoring instruction branch
Second normally closed contact of the other end and auxiliary switch of the normal opened contact of the other end on road and the latching electromagnet
One end connection.
2. the monitoring indicating circuit of power switch vacuum circuit breaker as described in claim 1, it is characterised in that:
The monitoring indicates that branch further includes and the concatenated resistance of the indicator light.
3. the monitoring indicating circuit of power switch vacuum circuit breaker as claimed in claim 2, it is characterised in that: described and instruction
The concatenated resistance of lamp is one of current-limiting resistance and dropping resistor.
4. the monitoring indicating circuit of power switch vacuum circuit breaker as claimed in claim 1 or 2, it is characterised in that: the finger
Show that lamp is one of light emitting diode, bulb and neon bulb indicator light.
5. the monitoring indicating circuit of power switch vacuum circuit breaker as claimed in claim 4, it is characterised in that: the indicator light
Be running current be 13mA green LED below.
6. the monitoring indicating circuit of power switch vacuum circuit breaker as claimed in claim 5, it is characterised in that: the green hair
Optical diode is mounted at the panel cut out of power switch vacuum circuit breaker, often from the first normally closed contact of auxiliary switch, second
It closes contact and draws the both ends that flexible circuit conductor is connected to monitoring instruction branch respectively.
7. the monitoring indicating circuit of power switch vacuum circuit breaker as described in claim 1, it is characterised in that: the combined floodgate electricity
Road further includes the anti-trip relay that one end of its coil is connect with an output end of closing coil rectifier bridge, described anti-jump
The other end of the coil of relay is connect with one end of anti-jump resistance, the other end of anti-jump resistance respectively with the anti-trip relay
Normal opened contact connected with one end of the normal opened contact of the auxiliary switch, the normal opened contact of the anti-trip relay and described auxiliary
Help the other end of the normal opened contact of switch to connect respectively with another output end of closing coil rectifier bridge, it is described it is anti-jump after
The other end of the normally closed contact of electric appliance is connect with another output end of closing coil rectifier bridge.
8. the monitoring indicating circuit of power switch vacuum circuit breaker as claimed in claim 7, it is characterised in that: the combined floodgate electricity
Road further includes energy storage contact, and the other end of second normally closed contact of one end and auxiliary switch of the energy storage contact is connect,
The other end of the energy storage contact is connect with one end of the normally closed contact of the anti-trip relay.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821467462.4U CN208690162U (en) | 2018-09-09 | 2018-09-09 | A kind of monitoring indicating circuit of power switch vacuum circuit breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821467462.4U CN208690162U (en) | 2018-09-09 | 2018-09-09 | A kind of monitoring indicating circuit of power switch vacuum circuit breaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208690162U true CN208690162U (en) | 2019-04-02 |
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ID=65888411
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821467462.4U Active CN208690162U (en) | 2018-09-09 | 2018-09-09 | A kind of monitoring indicating circuit of power switch vacuum circuit breaker |
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| Country | Link |
|---|---|
| CN (1) | CN208690162U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109216100A (en) * | 2018-09-09 | 2019-01-15 | 湛江电力有限公司 | A kind of monitoring indicating circuit of power switch vacuum circuit breaker |
-
2018
- 2018-09-09 CN CN201821467462.4U patent/CN208690162U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109216100A (en) * | 2018-09-09 | 2019-01-15 | 湛江电力有限公司 | A kind of monitoring indicating circuit of power switch vacuum circuit breaker |
| CN109216100B (en) * | 2018-09-09 | 2024-01-02 | 湛江电力有限公司 | Monitoring indication circuit of power switch vacuum circuit breaker |
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