CN108900101A - A kind of switchgear cowling panel of included defencive function - Google Patents
A kind of switchgear cowling panel of included defencive function Download PDFInfo
- Publication number
- CN108900101A CN108900101A CN201811021605.3A CN201811021605A CN108900101A CN 108900101 A CN108900101 A CN 108900101A CN 201811021605 A CN201811021605 A CN 201811021605A CN 108900101 A CN108900101 A CN 108900101A
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- China
- Prior art keywords
- rectifier bridge
- mutual inductor
- hall current
- relay
- current mutual
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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- 238000006243 chemical reaction Methods 0.000 claims abstract description 9
- 230000036772 blood pressure Effects 0.000 claims description 9
- 230000000087 stabilizing effect Effects 0.000 claims description 9
- 230000002459 sustained effect Effects 0.000 claims description 9
- 230000006641 stabilisation Effects 0.000 claims description 6
- 238000011105 stabilization Methods 0.000 claims description 6
- 230000005611 electricity Effects 0.000 claims description 5
- 238000009434 installation Methods 0.000 claims 1
- 238000004891 communication Methods 0.000 abstract description 3
- 238000010586 diagram Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 4
- 230000015556 catabolic process Effects 0.000 description 1
- 238000004146 energy storage Methods 0.000 description 1
- 230000001939 inductive effect Effects 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
- H02M7/02—Conversion of ac power input into dc power output without possibility of reversal
- H02M7/40—Conversion of ac power input into dc power output without possibility of reversal by combination of static with dynamic converters; by combination of dynamo-electric with other dynamic or static converters
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
- H02H7/10—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for converters; for rectifiers
- H02H7/12—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for converters; for rectifiers for static converters or rectifiers
- H02H7/125—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for converters; for rectifiers for static converters or rectifiers for rectifiers
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Emergency Protection Circuit Devices (AREA)
Abstract
A kind of switchgear cowling panel of included defencive function, including rectifier bridge HQ1, rectifier bridge Y1, rectifier bridge M1, rectifier bridge TO1, the output end of the rectifier bridge are connected in parallel freewheeling diode respectively；The output loop of the rectifier bridge is respectively arranged with on-off of the relay for output control loop；The output loop of the rectifier bridge is respectively arranged with Hall current mutual inductor for detecting the electric current of output loop.The signal output end of the Hall current mutual inductor is separately connected the A/D conversion mouth of singlechip controller U5；The coil of the relay is all connected with Darlington transistor battle array U4, Darlington transistor battle array U4 connection singlechip controller U5.A kind of switchgear cowling panel of included defencive function of the present invention increases freewheeling diode and protection circuit, the work safety of cowling panel and external equipment is effectively guaranteed；Increase external communication interface, facilitates inquiry fault loop.
Description
Technical field
The present invention relates to a kind of switchgear cowling panel, the switchgear cowling panel of specifically a kind of included defencive function.
Background technique
Switchgear is that one kind is widely used in all kinds of electric substations of electric system and power plant, industrial and mineral enterprises and institutions high voltage power distribution
Equipment.In switchgear normal use process, the power supply of the mechanisms such as opening coil, closing coil, energy storage motor of breaker comes
From in cowling panel.And at present in maintenance process, service personnel needs to be replaced frequently the cowling panel burnt out.
It is existing KYN28 switchgear cowling panel circuit diagram, there are following disadvantages as shown in Fig. 1 of Figure of description
End：
1）, since cowling panel institute bringing onto load is mostly inductive load, have very high backward voltage in starting, the moment closed and cause
Rectifier bridge reverse breakdown and burn.
2）, existing cowling panel be 10A using nominal current rectifier bridge, the big electricity caused by electric motor starting moment
Stream, be easy to cause it to burn.
3）, existing cowling panel when there is transience mechanical switch failure or permanent mechanical switch fault in outside, such as：
Opening coil, closing coil control relay contact adhesion or disconnection are burnt according at rectifier bridge overheat not in time.And it is single plus
The specification of big rectifier bridge promotes overload current, will cause opening coil, closing coil is burnt.Replace opening coil, closing line
The workload of circle, the workload than replacing one piece of cowling panel are bigger.
Summary of the invention
In order to solve the above technical problems, the present invention provides a kind of switchgear cowling panel of included defencive function, increase continuous
Diode and protection circuit are flowed, the work safety of cowling panel and external equipment is effectively guaranteed；Increase external communication interface, side
Just fault loop is inquired.
The technical scheme adopted by the invention is as follows：
A kind of switchgear cowling panel of included defencive function, including rectifier bridge HQ1, rectifier bridge Y1, rectifier bridge M1, rectifier bridge TO1,
24V power module U3, singlechip controller U5；
The rectifier bridge HQ1, rectifier bridge Y1, rectifier bridge M1, rectifier bridge TO1 output end be connected in parallel freewheeling diode respectively
D1, sustained diode 2, sustained diode 3, sustained diode 4；
The rectifier bridge HQ1, rectifier bridge Y1, rectifier bridge M1, rectifier bridge TO1 output loop be respectively arranged with relay K1, after
Electric appliance K2, relay K3, relay K4；On-off for output control loop；
The rectifier bridge HQ1, rectifier bridge Y1, rectifier bridge M1, rectifier bridge TO1 output loop be respectively arranged with Hall current mutual inductance
Device CT1, Hall current mutual inductor CT2, Hall current mutual inductor CT3, Hall current mutual inductor CT4；For detecting output loop
Electric current；
The Hall current mutual inductor CT1, Hall current mutual inductor CT2, Hall current mutual inductor CT3, Hall current mutual inductor
The signal output end of CT4 is separately connected the A/D conversion mouth of singlechip controller U5；
The coil of the relay K1, the coil of relay K2, the coil of relay K3, relay K4 coil be all connected with Da Lin
Pause transistor array U4, Darlington transistor battle array U4 connection singlechip controller U5；
The 24V power module U3 connection switch reduction voltage circuit, the linear voltage-stabilizing device of switch buck circuit connection, linear voltage regulator
It is mutual that part output end is separately connected singlechip controller U5, Hall current mutual inductor CT1, Hall current mutual inductor CT2, Hall current
Sensor CT3, Hall current mutual inductor CT4；24v power module is converted to 24VDC after taking electricity from cowling panel input port, then passes through
The switch buck circuit conversion is 5VDC, is finally converted to 3.3VDC by the linear voltage stabilization device and controls to the single-chip microcontroller
Device U5, the Hall current transformer for supplying power；
The 24V power module U3 connection Darlington transistor battle array U4.
The cowling panel is equipped with relay K5, and relay k5 is controlled by external signal, and relay K5 coil is via resistance R5
It is the first circuit to connection terminal；Relay K5 coil is second of circuit via resistance R5, resistance R6 to connection terminal；Point
Not Shi Yongyu external control signal voltage be 110vDC, external control signal voltage is 220vDC both of which.
The cowling panel is reserved with SPI interface.
The switch buck circuit includes lowering and stabilizing blood pressure chip U2, and the linear voltage stabilization device includes integrated voltage-stabilized chip
U1,24v power module connect the lowering and stabilizing blood pressure chip U2, the lowering and stabilizing blood pressure chip U2 connection integrated voltage-stabilized chip U1.
The singlechip controller U5 uses STM32 single-chip microcontroller.
A kind of switchgear cowling panel of included defencive function of the present invention increases freewheeling diode and protection circuit, effectively
The work safety that ensure that cowling panel and external equipment；Increase external communication interface, facilitates inquiry fault loop.
Detailed description of the invention
Fig. 1 is KYN28 switchgear cowling panel circuit diagram described in background technique.
Fig. 2 is switchgear cowling panel main circuit diagram of the present invention；
Fig. 3 is the 24V power module circuitry figure of switchgear cowling panel of the present invention；
Fig. 4 is the voltage regulator circuit figure of switchgear cowling panel of the present invention；
Fig. 5 is the singlechip controller circuit diagram of switchgear cowling panel of the present invention；
Fig. 6 is the work flow diagram of switchgear cowling panel of the present invention.
Specific embodiment
As shown in Fig. 2 ~ Fig. 5, a kind of switchgear cowling panel of included defencive function, including four be mounted on cowling panel
Rectifier bridge HQ1, rectifier bridge Y1, rectifier bridge M1, rectifier bridge TO1；Rectifier bridge HQ1, rectifier bridge Y1, rectifier bridge M1, rectifier bridge TO1 mark
Electric current is referred to as 25A.
The rectifier bridge HQ1, rectifier bridge Y1, rectifier bridge M1, rectifier bridge TO1 output end be connected in parallel two pole of afterflow respectively
Pipe D1, sustained diode 2, sustained diode 3, sustained diode 4；For absorbing the voltage generated from perceptual device.
The rectifier bridge HQ1, rectifier bridge Y1, rectifier bridge M1, rectifier bridge TO1 output loop be respectively arranged with relay
K1, relay K2, relay K3, relay K4；On-off for output control loop.
The rectifier bridge HQ1, rectifier bridge Y1, rectifier bridge M1, rectifier bridge TO1 output loop be respectively arranged with Hall current
Mutual inductor CT1, Hall current mutual inductor CT2, Hall current mutual inductor CT3, Hall current mutual inductor CT4；It is exported for detecting
The electric current in circuit.
The Hall current mutual inductor CT1, Hall current mutual inductor CT2, Hall current mutual inductor CT3, Hall current are mutual
The signal output end of sensor CT4 is separately connected the A/D conversion mouth of singlechip controller U5.
The coil of the relay K1, the coil of relay K2, the coil of relay K3, relay K4 coil be all connected with
Darlington transistor battle array U4, Darlington transistor battle array U4 connection singlechip controller U5.
The 24V power module U3 connection switch reduction voltage circuit, the linear voltage-stabilizing device of switch buck circuit connection are linear steady
Voltage device output end is separately connected singlechip controller U5, Hall current mutual inductor CT1, Hall current mutual inductor CT2, Hall electricity
Current transformer CT3, Hall current mutual inductor CT4；24V power module U3 is converted to 24VDC after taking electricity from cowling panel input port, so
It is afterwards 5VDC by the switch buck circuit conversion, 3.3VDC is finally converted to the monolithic by the linear voltage stabilization device
Machine controller U5, the Hall current transformer for supplying power.The 24V power module U3 connection Darlington transistor battle array U4, by 24V
Power module U3 directly powers.
The cowling panel is equipped with relay K5, and relay k5 is controlled by external signal, and relay K5 coil is via resistance R5
It is the first circuit to connection terminal；Relay K5 coil is second of circuit via resistance R5, resistance R6 to connection terminal；Point
Not Shi Yongyu external control signal voltage be 110vDC, external control signal voltage is 220vDC both of which.
The cowling panel is reserved with SPI interface, and external equipment is facilitated to read data.It can be judged according to the fault code of reading
It is which loop fault.
The switch buck circuit includes lowering and stabilizing blood pressure chip U2, and the linear voltage stabilization device includes integrated voltage-stabilized chip
U1,24v power module connect the lowering and stabilizing blood pressure chip U2, the lowering and stabilizing blood pressure chip U2 connection integrated voltage-stabilized chip U1.
The singlechip controller U5 uses STM32 single-chip microcontroller.
As shown in fig. 6, setting variables A 1, A2, A3, A4, timer T1, timer T2, timer T3, timing in a program
Device T4.Hall current mutual inductor CT1 that AD conversion mouth is read, Hall current mutual inductor CT2, Hall current mutual inductor CT3,
The value of Hall current mutual inductor CT4 signal is assigned to A1, A2, A3, A4 respectively.Set constant a1, a2, a3, a4, t1, t2, t3,
t4。
In the course of work, variables A 1, A2, A3, A4 are respectively represented currently through Hall current mutual inductor CT1, CT2, CT3, CT4
Size of current.T1, T2, T3, T4 respectively represent continuous current by Hall current mutual inductor CT1, CT2, CT3, CT4 when
Between.
Processing one：By it is current by Current Transmit 1, CT2, CT3, CT4 size of current A1, A2, A3, A4 respectively with
Pre-set definite value a1, a2, a3, a4 is compared.If it exceeds the current value of setting is disconnected accordingly by relay
Circuit.
Processing two：To currently there be continuous current to pass through Current Transmit 1, time T1, T2, T3, T4 of CT2, CT3, CT4
It is compared respectively with pre-set definite value t1, t2, t3, t4.If it exceeds the time of setting is disconnected by relay
Corresponding circuit.
Claims (6)
1. a kind of switchgear cowling panel of included defencive function, including rectifier bridge HQ1, rectifier bridge Y1, rectifier bridge M1, rectifier bridge
TO1,24V power module U3, singlechip controller U5；It is characterized in that：
The rectifier bridge HQ1, rectifier bridge Y1, rectifier bridge M1, rectifier bridge TO1 output end be connected in parallel freewheeling diode respectively
D1, sustained diode 2, sustained diode 3, sustained diode 4；
The rectifier bridge HQ1, rectifier bridge Y1, rectifier bridge M1, rectifier bridge TO1 output loop be respectively arranged with relay K1, after
Electric appliance K2, relay K3, relay K4；On-off for output control loop；
The rectifier bridge HQ1, rectifier bridge Y1, rectifier bridge M1, rectifier bridge TO1 output loop be respectively arranged with Hall current mutual inductance
Device CT1, Hall current mutual inductor CT2, Hall current mutual inductor CT3, Hall current mutual inductor CT4；For detecting output loop
Electric current；
The Hall current mutual inductor CT1, Hall current mutual inductor CT2, Hall current mutual inductor CT3, Hall current mutual inductor
The signal output end of CT4 is separately connected the A/D conversion mouth of singlechip controller U5；
The coil of the relay K1, the coil of relay K2, the coil of relay K3, relay K4 coil be all connected with Da Lin
Pause transistor array U4, Darlington transistor battle array U4 connection singlechip controller U5；
The 24V power module U3 connection switch reduction voltage circuit, the linear voltage-stabilizing device of switch buck circuit connection, linear voltage regulator
It is mutual that part output end is separately connected singlechip controller U5, Hall current mutual inductor CT1, Hall current mutual inductor CT2, Hall current
Sensor CT3, Hall current mutual inductor CT4；24v power module is converted to 24VDC after taking electricity from cowling panel input port, then passes through
The switch buck circuit conversion is 5VDC, is finally converted to 3.3VDC by the linear voltage stabilization device and controls to the single-chip microcontroller
Device U5, the Hall current transformer for supplying power；
The 24V power module U3 connection Darlington transistor battle array U4.
2. a kind of switchgear cowling panel of included defencive function according to claim 1, it is characterised in that：Cowling panel installation
There are relay K5, relay k5 to be controlled by external signal, relay K5 coil is the first time via resistance R5 to connection terminal
Road；Relay K5 coil is second of circuit via resistance R5, resistance R6 to connection terminal；It is respectively suitable for external control signal
Voltage is 110vDC, external control signal voltage is 220vDC both of which.
3. a kind of switchgear cowling panel of included defencive function according to claim 1, it is characterised in that：The cowling panel is pre-
There are SPI interfaces.
4. a kind of switchgear cowling panel of included defencive function according to claim 1, it is characterised in that：The switch buck
Circuit includes lowering and stabilizing blood pressure chip U2, and the linear voltage stabilization device includes integrated voltage-stabilized chip U1, described in the connection of 24v power module
Lowering and stabilizing blood pressure chip U2, the lowering and stabilizing blood pressure chip U2 connection integrated voltage-stabilized chip U1.
5. a kind of switchgear cowling panel of included defencive function according to claim 1, it is characterised in that：The single-chip microcontroller control
Device U5 processed uses STM32 single-chip microcontroller.
6. the switchgear cowling panel of any one included defencive function as described in claim 1-5, it is characterised in that：
Hall current mutual inductor CT1 that AD conversion mouth is read, Hall current mutual inductor CT2, Hall current mutual inductor CT3,
The value of Hall current mutual inductor CT4 signal is assigned to A1, A2, A3, A4 respectively, sets constant a1, a2, a3, a4, t1, t2, t3,
t4；
In the course of work, variables A 1, A2, A3, A4 are respectively represented currently through Hall current mutual inductor CT1, CT2, CT3, CT4
Size of current, T1, T2, T3, T4 respectively represent continuous current by Hall current mutual inductor CT1, CT2, CT3, CT4 when
Between；
By it is current by Current Transmit 1, CT2, CT3, CT4 size of current A1, A2, A3, A4 respectively with it is pre-set
Definite value a1, a2, a3, a4 be compared, if it exceeds the current value of setting passes through relay and disconnects corresponding circuit；
By currently have continuous current by Current Transmit 1, CT2, CT3, CT4 time T1, T2, T3, T4 respectively and in advance
Definite value t1, t2, t3, the t4 set is compared, if it exceeds the time of setting, i.e. passing through relay disconnected corresponding circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811021605.3A CN108900101A (en) | 2018-09-03 | 2018-09-03 | A kind of switchgear cowling panel of included defencive function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811021605.3A CN108900101A (en) | 2018-09-03 | 2018-09-03 | A kind of switchgear cowling panel of included defencive function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108900101A true CN108900101A (en) | 2018-11-27 |
Family
ID=64359637
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811021605.3A Pending CN108900101A (en) | 2018-09-03 | 2018-09-03 | A kind of switchgear cowling panel of included defencive function |
Country Status (1)
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| CN (1) | CN108900101A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112924860A (en) * | 2021-01-27 | 2021-06-08 | 上汽通用五菱汽车股份有限公司 | High-voltage relay adhesion detection circuit and equipment |
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