CN208675123U - A kind of switchgear cowling panel of included defencive function - Google Patents
A kind of switchgear cowling panel of included defencive function Download PDFInfo
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- CN208675123U CN208675123U CN201821434051.5U CN201821434051U CN208675123U CN 208675123 U CN208675123 U CN 208675123U CN 201821434051 U CN201821434051 U CN 201821434051U CN 208675123 U CN208675123 U CN 208675123U
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- rectifier bridge
- relay
- hall current
- cowling panel
- mutual inductor
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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 utility model 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 utility model 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, very high backward voltage is had in starting, the moment closed
It causes rectifier bridge reverse breakdown and burns.
2), the rectifier bridge that existing cowling panel is 10A using nominal current, the big electricity caused by electric motor starting moment
Stream, be easy to cause it to burn.
3), existing cowling panel is when transience mechanical switch failure or permanent mechanical switch fault occurs 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 utility model provides a kind of switchgear cowling panel of included defencive function, increase
Freewheeling diode and protection circuit, are effectively guaranteed the work safety of cowling panel and external equipment；Increase external communication to connect
Mouthful, facilitate inquiry fault loop.
The technical solution that the utility model is taken are 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 two pole of afterflow respectively
Pipe 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, 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 is converted to 24VDC after taking electricity from cowling panel input port, then
It is 5VDC by the switch buck circuit conversion, 3.3VDC is finally converted to the single-chip microcontroller by the linear voltage stabilization device
Controller 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 utility model 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.
Detailed description of the invention
Fig. 1 is KYN28 switchgear cowling panel circuit diagram described in background technique.
Fig. 2 is the utility model switchgear cowling panel main circuit diagram；
Fig. 3 is the 24V power module circuitry figure of the utility model switchgear cowling panel；
Fig. 4 is the voltage regulator circuit figure of the utility model switchgear cowling panel；
Fig. 5 is the singlechip controller circuit diagram of the utility model switchgear cowling panel；
Fig. 6 is the work flow diagram of the utility model switchgear cowling panel.
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 respectively represent currently by Hall current mutual inductor CT1, CT2, CT3,
The size of current of CT4.T1, T2, T3, T4 have respectively represented continuous current and have passed through Hall current mutual inductor CT1, CT2, CT3, CT4
Time.
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: continuous current will currently passes 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 (5)
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 by:
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.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821434051.5U CN208675123U (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 |
|---|---|---|---|
| CN201821434051.5U CN208675123U (en) | 2018-09-03 | 2018-09-03 | A kind of switchgear cowling panel of included defencive function |
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| Publication Number | Publication Date |
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| CN208675123U true CN208675123U (en) | 2019-03-29 |
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| CN201821434051.5U Active CN208675123U (en) | 2018-09-03 | 2018-09-03 | A kind of switchgear cowling panel of included defencive function |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108900101A (en) * | 2018-09-03 | 2018-11-27 | 国网湖北省电力有限公司宜昌供电公司 | A kind of switchgear cowling panel of included defencive function |
-
2018
- 2018-09-03 CN CN201821434051.5U patent/CN208675123U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108900101A (en) * | 2018-09-03 | 2018-11-27 | 国网湖北省电力有限公司宜昌供电公司 | A kind of switchgear cowling panel of included defencive function |
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