CN109066713A - Electric reactive compensating capacitance detecting and A.C. contactor protect circuit - Google Patents
Electric reactive compensating capacitance detecting and A.C. contactor protect circuit Download PDFInfo
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- CN109066713A CN109066713A CN201810967061.3A CN201810967061A CN109066713A CN 109066713 A CN109066713 A CN 109066713A CN 201810967061 A CN201810967061 A CN 201810967061A CN 109066713 A CN109066713 A CN 109066713A
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- resistance
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- diode
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/18—Arrangements for adjusting, eliminating or compensating reactive power in networks
- H02J3/1821—Arrangements for adjusting, eliminating or compensating reactive power in networks using shunt compensators
- H02J3/1835—Arrangements for adjusting, eliminating or compensating reactive power in networks using shunt compensators with stepless control
- H02J3/1842—Arrangements for adjusting, eliminating or compensating reactive power in networks using shunt compensators with stepless control wherein at least one reactive element is actively controlled by a bridge converter, e.g. active filters
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H9/00—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection
- H02H9/08—Limitation or suppression of earth fault currents, e.g. Petersen coil
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E40/00—Technologies for an efficient electrical power generation, transmission or distribution
- Y02E40/30—Reactive power compensation
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Abstract
The invention discloses a kind of electric reactive compensating capacitance detectings and A.C. contactor to protect circuit, including zero curve L1, firewire N1, switch KM1, bridge rectifier diode D1~D4, bridge rectifier diode D9~D12, light sensation coupler IC1-IC3, zener diode VD1-VD2, triode Q1-Q7, diode D5-D8, relay J1, relay normally closed contact JI-1, relay normally closed contact JI-2, relay normally closed contact JI-3, A.C. contactor K1, A.C. contactor normally-closed contact K1-1, A.C. contactor normally-closed contact K1-2, A.C. contactor normally-closed contact K1-3, reactive compensation capacitor CL1-CL3, capacitor C1-C4, resistance R1-R15, buzzer Y1；It is detected by setting reactive compensation capacitor and A.C. contactor protects circuit; it is the reactive compensation capacitor and three-phase voltage parallel operation on three-phase voltage; power equipment used is set to obtain capacitance compensation power; simultaneously protect A.C. contactor moment connect reactive compensation capacitor when, instantaneous large-current charging generate electric arc and burn out A.C. contactor.
Description
Technical field:
The present invention relates to field of electronic devices, and in particular to electric reactive compensating capacitance detecting and A.C. contactor protection electricity
Road.
Background technique:
Capacitor is widely used on many terminal electronic devices, for example, for touching on terminal device display screen
The A.C. contactor of control.
The working principle of A.C. contactor is to be matched using electromagnetic force with spring force, realizes the connection and disjunction of contact
's.A.C. contactor is there are two types of working condition: power failure state (release conditions) and obtaining electricity condition (action state).When attraction line
After circle is powered, static iron core is made to generate electromagnetic attraction, armature is attracted, and the connecting rod being connected with armature drives contact action, is made normally closed
Contact disconnecting tentaculum is in obtain electricity condition；When sucking coil power-off, electromagnetic attraction disappears, and armature is being opened again, makes normally open contact
Closure, the lower release of position spring effect, all contacts reset therewith, and contactor is in power failure state.
Traditional reactive compensation capacitor detection is not in use because circuit has the normally opened of control A.C. contactor
The effect of contact, therefore the electric arc that the instantaneous large-current charging generated generates can burn out A.C. contactor, gently then damage circuit elements
Device, it is heavy then cause fire, endanger the security of the lives and property of people.Thus, it would be highly desirable to which one kind can be protected in reactive compensation capacitor
Protect the protection circuit of A.C. contactor.
Summary of the invention:
Technical problem to be solved by the present invention lies in providing, a kind of circuit design is simple, structurally reasonable, practicability is high
Electric reactive compensating capacitance detecting and A.C. contactor protect circuit.
The following technical solution is employed for the technical problems to be solved by the invention to realize: electric reactive compensating capacitance detecting
Circuit, including zero curve L1, firewire N1, switch KM1, bridge rectifier diode D1~D4, bridge rectifier are protected with A.C. contactor
Diode D9~D12, light sensation coupler IC1, light sensation coupler IC2, light sensation coupler IC3, zener diode VD1, pressure stabilizing two
Pole pipe VD2, triode Q1, triode Q2, triode Q3, triode Q4, triode Q5, triode Q6, triode Q7, diode
D5, diode D6, diode D7, diode D8, relay J1, relay normally closed contact JI-1, relay normally closed contact JI-2,
Relay normally closed contact JI-3, A.C. contactor K1, A.C. contactor normally-closed contact K1-1, A.C. contactor normally-closed contact K1-
2, A.C. contactor normally-closed contact K1-3, reactive compensation capacitor CL1, reactive compensation capacitor CL2, reactive compensation capacitor CL3, capacitor
C1, capacitor C2, capacitor C3, capacitor C4, resistance R1, resistance R2, resistance R3, resistance R4, resistance R5, resistance R6, resistance R7, resistance
R8, resistance R9, resistance R10, resistance R11, resistance R12, resistance R13, resistance R14, resistance R15, buzzer Y1, three-phase line A
Phase A1, three-phase line A phase A2, three-phase line B phase B1, three-phase line B phase B2, three-phase line C phase C1, three-phase line C phase C2；
The zero curve L1 through switch KM1 is connected respectively to 1 foot of A.C. contactor K1 and to be connected to bridge-type through capacitor C1 whole
1 foot of diode D1~D4, the 4 feet ground connection of bridge rectifier diode D1~D4 are flowed, firewire N1 is connected respectively to light sensation coupler
3 foot of output of IC1 and 2 feet of bridge rectifier diode D1~D4,2 feet of A.C. contactor K1 are connected to light sensation coupler IC1
4 foot of input, 3 feet of bridge rectifier diode D1-D4 be connected respectively to one end of capacitor C2, zener diode VD1 cathode,
1 foot of relay J1, the collector of triode Q8 and cathode, resistance R2 that zener diode VD2 is connected respectively to through resistance R1
One end, the cathode of diode R6, the cathode of diode D7, one end of resistance R3 and diode D5 anode, capacitor C2's is another
One end ground connection, the plus earth of zener diode VD1, the plus earth of zener diode VD2, the other end ground connection of resistance R2,
The anode of diode D7 is connected respectively to the base stage of the other end of resistance R3, one end of capacitor C3 and triode Q1, capacitor C3's
Other end ground connection, the emitter of triode Q1 are connected to the cathode of diode, and collector is connected to triode Q2's through resistance R4
Base stage, the collector of triode Q2 are connected to 2 feet of relay J1, and triode Q2 emitter is grounded, and the 1 of light sensation coupler IC1
Foot is connected respectively to the negative of one end of resistance R8, the anode of diode D8, one end of resistance R7 and diode D6 through resistance R9
Pole, 2 feet of light sensation coupler IC1 are connected to the collector of triode Q5, and the emitter ground connection of triode Q5, resistance R8's is another
End is connected to the collector of triode Q4, and the base stage of triode Q5 is connected to the connecting line of resistance R8 Yu triode Q4 collector
On, the emitter of triode Q4 is grounded, and base stage is connected to the collector of triode Q3, the emitter of triode Q3 through resistance R10
It is connected to the cathode of diode D8, base stage is connected respectively to the other end of resistance R7, one end ground connection of capacitor C4 and diode D6
Anode, the other end ground connection of capacitor C4, the base stage of triode Q8 is connected to the connecting line of resistance R8 and triode Q4 collector
On, the emitter of triode Q8 is connected respectively to one end of 4 feet of light sensation coupler IC2, one end of resistance R6 and buzzer Y1,
3 feet of light sensation coupler IC2 are connected respectively to one end of resistance R17 and the base stage of triode Q6 through resistance R16, resistance R17's
Other end ground connection, the emitter ground connection of triode Q6, the collector of triode Q6 are connected to the other end of resistance R6, buzzer
The other end of Y1 is connected to the collector of triode Q7, and the base stage of triode Q7 is connected to resistance R6 and triode Q6 collector
On connecting line, the emitter of triode Q7 is grounded, and the both ends of resistance R5 are parallel on the collector and base stage of triode Q8；
The relay J1 and AC relay K1 series connection, and internal be equipped with protects circuit, in the internal protection circuitry
Three-phase line A phase A1 is connected to one end of compensating electric capacity CL1, three-phase line B phase B1 warp through A.C. contactor normally closed switch K1-1
A.C. contactor normally closed switch K1-2 is connected on the connecting line of compensating electric capacity CL1 and compensating electric capacity CL2, three-phase line C phase C1
One end of compensating electric capacity CL3 is connected to through A.C. contactor normally closed switch K1-3, three-phase line A phase A2 is through relay J1-1 and electricity
Resistance R13 is connected to one end of compensating electric capacity CL1, and three-phase line B phase B2 is connected to compensation electricity through relay J1-2 and resistance R12
On the connecting line for holding CL1 and compensating electric capacity CL2, three-phase line C phase C2 is connected to compensating electric capacity through relay J1-3 and resistance R11
One end of CL2, compensating electric capacity CL3 are connected in parallel on the both ends of compensating electric capacity CL1 Yu compensating electric capacity CL2, A.C. contactor normally closed switch
The connecting line of K1-1 and compensating electric capacity CL1 is equipped with current transformer L3, and A.C. contactor normally closed switch K1-2 is connected to compensation
Connecting line on the connecting line of capacitor CL1 and compensating electric capacity CL2 is equipped with current transformer L2, A.C. contactor normally closed switch
The connecting line of K1-3 and compensating electric capacity CL2 is equipped with current transformer L1, and compensating electric capacity CL1, CL2, CL3 are connected on bridge rectifier
On 1 foot and 2 feet of diode D9~D12,3 feet of bridge rectifier diode D9~D12 are grounded, and 4 feet are connected respectively to resistance
One end of R14 and 1 foot that light sensation coupler IC3 is connected to through resistance R15, the other end ground connection of resistance R14, light sensation coupler IC3
2 feet ground connection.
Circuit is protected with A.C. contactor the beneficial effects of the present invention are: detecting by setting reactive compensation capacitor, is three
Reactive compensation capacitor and three-phase voltage parallel operation in phase voltage, make power equipment used obtain capacitance compensation power, together
When protect A.C. contactor moment connect reactive compensation capacitor when, instantaneous large-current charging generate electric arc and burn out exchange
Contactor.
Detailed description of the invention:
Fig. 1 is electrical block diagram of the invention；
Fig. 2 is A.C. contactor internal protection circuitry structural schematic diagram of the invention；
Specific embodiment:
In the description of the present invention, it should be noted that the orientation of the instructions such as term "vertical", "upper", "lower", "horizontal"
Or positional relationship is to be based on the orientation or positional relationship shown in the drawings, and is merely for convenience of description of the present invention and simplification of the description, and
It is not that the device of indication or suggestion meaning or element must have a particular orientation, be constructed and operated in a specific orientation, therefore
It is not considered as limiting the invention.
In the description of the present invention, it is also necessary to which explanation is unless specifically defined or limited otherwise, term " setting ",
" installation ", " connected ", " connection " shall be understood in a broad sense, for example, it may be fixedly connected, may be a detachable connection or one
Connect to body；It can be mechanical connection, be also possible to be electrically connected；It can be directly connected, it can also be indirect by intermediary
It is connected, can be the connection inside two elements.For the ordinary skill in the art, it can manage as the case may be
Solve the concrete meaning of above-mentioned term in the present invention.
In order to be easy to understand the technical means, the creative features, the aims and the efficiencies achieved by the present invention, tie below
Conjunction is specifically illustrating, and the present invention is further explained.
Embodiment 1
It please refers to shown in Fig. 1-2, electric reactive compensating capacitance detecting and A.C. contactor protection circuit, including zero curve L1,
Firewire N1, switch KM1, bridge rectifier diode D1~D4, bridge rectifier diode D9~D12, light sensation coupler IC1, light sensation
Coupler IC2, light sensation coupler IC3, zener diode VD1, zener diode VD2, triode Q1, triode Q2, triode
Q3, triode Q4, triode Q5, triode Q6, triode Q7, diode D5, diode D6, diode D7, diode D8, after
Electric appliance J1, relay normally closed contact JI-1, relay normally closed contact JI-2, relay normally closed contact JI-3, A.C. contactor K1,
A.C. contactor normally-closed contact K1-1, A.C. contactor normally-closed contact K1-2, A.C. contactor normally-closed contact K1-3, reactive compensation
Capacitor CL1, reactive compensation capacitor CL2, reactive compensation capacitor CL3, capacitor C1, capacitor C2, capacitor C3, capacitor C4, resistance R1, electricity
Hinder R2, resistance R3, resistance R4, resistance R5, resistance R6, resistance R7, resistance R8, resistance R9, resistance R10, resistance R11, resistance
R12, resistance R13, resistance R14, resistance R15, buzzer Y1, three-phase line A phase A1, three-phase line A phase A2, three-phase line B phase
B1, three-phase line B phase B2, three-phase line C phase C1, three-phase line C phase C2；
The zero curve L1 through switch KM1 is connected respectively to 1 foot of A.C. contactor K1 and to be connected to bridge-type through capacitor C1 whole
1 foot of diode D1~D4, the 4 feet ground connection of bridge rectifier diode D1~D4 are flowed, firewire N1 is connected respectively to light sensation coupler
3 foot of output of IC1 and 2 feet of bridge rectifier diode D1~D4,2 feet of A.C. contactor K1 are connected to light sensation coupler IC1
4 foot of input, 3 feet of bridge rectifier diode D1-D4 be connected respectively to one end of capacitor C2, zener diode VD1 cathode,
1 foot of relay J1, the collector of triode Q8 and cathode, resistance R2 that zener diode VD2 is connected respectively to through resistance R1
One end, the cathode of diode R6, the cathode of diode D7, one end of resistance R3 and diode D5 anode, capacitor C2's is another
One end ground connection, the plus earth of zener diode VD1, the plus earth of zener diode VD2, the other end ground connection of resistance R2,
The anode of diode D7 is connected respectively to the base stage of the other end of resistance R3, one end of capacitor C3 and triode Q1, capacitor C3's
Other end ground connection, the emitter of triode Q1 are connected to the cathode of diode, and collector is connected to triode Q2's through resistance R4
Base stage, the collector of triode Q2 are connected to 2 feet of relay J1, and triode Q2 emitter is grounded, and the 1 of light sensation coupler IC1
Foot is connected respectively to the negative of one end of resistance R8, the anode of diode D8, one end of resistance R7 and diode D6 through resistance R9
Pole, 2 feet of light sensation coupler IC1 are connected to the collector of triode Q5, and the emitter ground connection of triode Q5, resistance R8's is another
End is connected to the collector of triode Q4, and the base stage of triode Q5 is connected to the connecting line of resistance R8 Yu triode Q4 collector
On, the emitter of triode Q4 is grounded, and base stage is connected to the collector of triode Q3, the emitter of triode Q3 through resistance R10
It is connected to the cathode of diode D8, base stage is connected respectively to the other end of resistance R7, one end ground connection of capacitor C4 and diode D6
Anode, the other end ground connection of capacitor C4, the base stage of triode Q8 is connected to the connecting line of resistance R8 and triode Q4 collector
On, the emitter of triode Q8 is connected respectively to one end of 4 feet of light sensation coupler IC2, one end of resistance R6 and buzzer Y1,
3 feet of light sensation coupler IC2 are connected respectively to one end of resistance R17 and the base stage of triode Q6 through resistance R16, resistance R17's
Other end ground connection, the emitter ground connection of triode Q6, the collector of triode Q6 are connected to the other end of resistance R6, buzzer
The other end of Y1 is connected to the collector of triode Q7, and the base stage of triode Q7 is connected to resistance R6 and triode Q6 collector
On connecting line, the emitter of triode Q7 is grounded, and the both ends of resistance R5 are parallel on the collector and base stage of triode Q8；
It is described, relay J1 and AC relay K1 series connection, and internal be equipped with protects circuit, in the internal protection circuitry
Three-phase line A phase A1 is connected to one end of compensating electric capacity CL1, three-phase line B phase B1 warp through A.C. contactor normally closed switch K1-1
A.C. contactor normally closed switch K1-2 is connected on the connecting line of compensating electric capacity CL1 and compensating electric capacity CL2, three-phase line C phase C1
One end of compensating electric capacity CL3 is connected to through A.C. contactor normally closed switch K1-3, three-phase line A phase A2 is through relay J1-1 and electricity
Resistance R13 is connected to one end of compensating electric capacity CL1, and three-phase line B phase B2 is connected to compensation electricity through relay J1-2 and resistance R12
On the connecting line for holding CL1 and compensating electric capacity CL2, three-phase line C phase C2 is connected to compensating electric capacity through relay J1-3 and resistance R11
One end of CL2, compensating electric capacity CL3 are connected in parallel on the both ends of compensating electric capacity CL1 Yu compensating electric capacity CL2, A.C. contactor normally closed switch
The connecting line of K1-1 and compensating electric capacity CL1 is equipped with current transformer L3, and A.C. contactor normally closed switch K1-2 is connected to compensation
Connecting line on the connecting line of capacitor CL1 and compensating electric capacity CL2 is equipped with current transformer L2, A.C. contactor normally closed switch
The connecting line of K1-3 and compensating electric capacity CL2 is equipped with current transformer L1, and compensating electric capacity CL1, CL2, CL3 are connected on bridge rectifier
On 1 foot and 2 feet of diode D9~D12,3 feet of bridge rectifier diode D9~D12 are grounded, and 4 feet are connected respectively to resistance
One end of R14 and 1 foot that light sensation coupler IC3 is connected to through resistance R15, the other end ground connection of resistance R14, light sensation coupler IC3
2 feet ground connection.
The end L1 and N1: being connected on 220V power supply by working principle first, and tri- end A, B, C of 380V is connected to three-phase
On power supply, when needing reactive compensation, after KM1 switch is closed, 220V voltage divides two-way, is connected to K1 A.C. contactor all the way
1 end of coil, another way voltage is through C1 capacitance decompression, through VD1 zener diode pressure stabilizing, C2 after the rectification of D1~D4 diode bridge
Output 24V voltage exports 12V, 12V electricity all the way after the decompression of R1 resistance after VD2 zener diode pressure stabilizing after capacitor filtering
Pressure through R3 resistance to C3 capacitor charging while make Q1 triode ON, the collector output high level of Q1 triode is through R4 resistance
Making Q2 triode ON, J1 relay is attracted, and it is also turned on normally-closed contact J1-1, J1-2, J1-3 of J1 relay, the three of J1
After a contact is connected, 380V three-phase voltage is through R13 resistance and R12 resistance and R11 resistance to reactive compensation capacitor, CL1 and CL2
It charges with CL3, charged pressure has been filled on short time reactive compensation capacitor, and while the work of J1 relay, 12V voltage is same
When through R7 resistance to capacitor C4 capacitor charging while, make Q3 triode ON, Q3 collector output high level is arrived through resistance R10
The base stage of Q4 triode makes Q4 triode ON, ends Q5 triode, and IC1 photoelectrical coupler does not work, and makes K1 ac contactor
Do not work, when C4 capacitor after a certain time, after being fully charged on C4, Q3 cut-off, Q4 cut-off, Q5 conducting, IC1 optocoupler obtains electrician
Make, make K1 A.C. contactor work once electrified, connects K1-1, K1-2, K1-3 A.C. contactor normally-closed contact, make on three-phase voltage
Reactive compensation capacitor and three-phase voltage parallel operation, so that all power equipments is obtained capacitance compensation power, while also making Q8
Triode ON, after a certain time, the charged pressure of C3 capacitor have been expired, and Q1 triode is ended, the cut-off of Q2 triode, J1 relay
Device power loss is not attracted, and J1-1, J1-2, J1-3 normally-closed contact disconnect.To protect A.C. contactor to connect reactive compensation in moment
When capacitor time large current charge generate electric arc and burn out A.C. contactor.While C4 charging, be connected in Q4 triode
While, Q8 triode is also at off state, and after K1 A.C. contactor normal work, three-phase voltage flows through reactive compensation
While capacitor CL1, CL2, CL3, the alternating voltage of about 1V, three Current Mutual Inductances will be generated on L1, L2, L3 current transformer
Device is tandem working, and about 3V voltage will be generated on three current transformers and exports about 2.5V after D9~D12 bridge rectifier
Voltage makes 1 foot work once electrified of IC2 optocoupler after R14 resistance and R15 electric resistance partial pressure, and 3 feet of IC2 optocoupler export high level, make Q6
Triode ON ends Q7 triode, and Y1 buzzer does not work, and indicates that reactive compensation capacitor capacity is normal, works as three-phase power
After having some capacitance to become smaller or fail in reactive compensation capacitor, the current transformer that can be connected on failure capacitor can nothing
Induced voltage output, makes alternating current drops on current transformer, and the voltage through the rectification output of D9~D12 triode is also under meeting
Drop, to cannot make IC2 optocoupler work once electrified, 3 foot of IC2 optocoupler ends Q6 triode without high level output, and Q7 triode is led
Logical, Y1 buzzer luminous alarm sound indicates that reactive compensation has damage, needs replacing new capacitor！
The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention.The technology of the industry
Personnel are it should be appreciated that the present invention is not limited to the above embodiments, and the above embodiments and description only describe this
The principle of invention, without departing from the spirit and scope of the present invention, various changes and improvements may be made to the invention, these changes
Change and improvement all fall within the protetion scope of the claimed invention.The claimed scope of the invention by appended claims and its
Equivalent thereof.
Claims (4)
1. electric reactive compensating capacitance detecting and A.C. contactor protect circuit, it is characterised in that: including the zero curve L1, fire
Line N1, switch KM1, bridge rectifier diode D1~D4, bridge rectifier diode D9-D12, light sensation coupler IC1, light sensation coupling
Device IC2, light sensation coupler IC3, zener diode VD1, zener diode VD2, triode Q1, triode Q2, triode Q3, three
Pole pipe Q4, triode Q5, triode Q6, triode Q7, diode D5, diode D6, diode D7, diode D8, relay
J1, relay normally closed contact JI-1, relay normally closed contact JI-2, relay normally closed contact JI-3, A.C. contactor K1, exchange
Contactor normally-closed contact K1-1, A.C. contactor normally-closed contact K1-2, A.C. contactor normally-closed contact K1-3, reactive compensation capacitor
CL1, reactive compensation capacitor CL2, reactive compensation capacitor CL3, capacitor C1, capacitor C2, capacitor C3, capacitor C4, resistance R1, resistance
R2, resistance R3, resistance R4, resistance R5, resistance R6, resistance R7, resistance R8, resistance R9, resistance R10, resistance R11, resistance R12,
Resistance R13, resistance R14, resistance R15, buzzer Y1, three-phase line A phase A1, three-phase line A phase A2, three-phase line B phase B1, three
Phase line B phase B2, three-phase line C phase C1, three-phase line C phase C2.
2. a kind of electric reactive compensating capacitance detecting according to claim 1 and A.C. contactor protect circuit, feature
Be: the zero curve L1 is connected respectively to 1 foot of A.C. contactor K1 through switch KM1 and is connected to bridge rectifier two through capacitor C1
1 foot of pole pipe D1-D4, the 4 feet ground connection of bridge rectifier diode D1-D4, firewire N1 are connected respectively to the defeated of light sensation coupler IC1
2 feet of 3 feet and bridge rectifier diode D1-D4 out, 2 feet of A.C. contactor K1 are connected to the input 4 of light sensation coupler IC1
Foot, 3 feet of bridge rectifier diode D1-D4 are connected respectively to one end of capacitor C2, the cathode of zener diode VD1, relay
1 foot of J1, the collector of triode Q8 and through resistance R1 be connected respectively to the cathode of zener diode VD2, one end of resistance R2,
The cathode of diode R6, the cathode of diode D7, one end of resistance R3 and diode D5 anode, another termination of capacitor C2
Ground, the plus earth of zener diode VD1, the plus earth of zener diode VD2, the other end ground connection of resistance R2, diode
The anode of D7 is connected respectively to the base stage of the other end of resistance R3, one end of capacitor C3 and triode Q1, the other end of capacitor C3
Ground connection, the emitter of triode Q1 are connected to the cathode of diode, and collector is connected to the base stage of triode Q2 through resistance R4, and three
The collector of pole pipe Q2 is connected to 2 feet of relay J1, and triode Q2 emitter ground connection, 1 foot of light sensation coupler IC1 is through resistance
R9 is connected respectively to the cathode of one end of resistance R8, the anode of diode D8, one end of resistance R7 and diode D6, light sensation coupling
2 feet of device IC1 are connected to the collector of triode Q5, the emitter ground connection of triode Q5, and the other end of resistance R8 is connected to three
The collector of pole pipe Q4, the base stage of triode Q5 are connected on the connecting line of resistance R8 and triode Q4 collector, triode Q4
Emitter ground connection, base stage is connected to the collector of triode Q3 through resistance R10, and the emitter of triode Q3 is connected to diode
The cathode of D8, base stage are connected respectively to the anode of one end ground connection and diode D6 of the other end of resistance R7, capacitor C4, capacitor C4
Other end ground connection, the base stage of triode Q8 is connected on the connecting line of resistance R8 and triode Q4 collector, triode Q8's
Emitter is connected respectively to one end of 4 feet of light sensation coupler IC2, one end of resistance R6 and buzzer Y1, light sensation coupler IC2
3 feet be connected respectively to one end of resistance R17 and the base stage of triode Q6 through resistance R16, the other end ground connection of resistance R17, three
The emitter of pole pipe Q6 is grounded, and the collector of triode Q6 is connected to the other end of resistance R6, the other end connection of buzzer Y1
To the collector of triode Q7, the base stage of triode Q7 is connected on the connecting line of resistance R6 and triode Q6 collector, three poles
The emitter of pipe Q7 is grounded, and the both ends of resistance R5 are parallel on the collector and base stage of triode Q8.
3. a kind of electric reactive compensating capacitance detecting according to claim 2 and A.C. contactor protect circuit, feature
It is: the relay J1 and AC relay K1 series connection, and internal be equipped with protects circuit.
4. a kind of electric reactive compensating capacitance detecting according to claim 3 and A.C. contactor protect circuit, feature
Be: three-phase line A phase A1 is connected to compensating electric capacity CL1 through A.C. contactor normally closed switch K1-1 in the internal protection circuitry
One end, three-phase line B phase B1 is connected to compensating electric capacity CL1's and compensating electric capacity CL2 through A.C. contactor normally closed switch K1-2
On connecting line, three-phase line C phase C1 is connected to one end of compensating electric capacity CL3, triple line through A.C. contactor normally closed switch K1-3
Road A phase A2 is connected to one end of compensating electric capacity CL1 through relay J1-1 and resistance R13, and three-phase line B phase B2 is through relay J1-2
Be connected to resistance R12 on the connecting line of compensating electric capacity CL1 and compensating electric capacity CL2, three-phase line C phase C2 through relay J1-3 and
Resistance R11 is connected to one end of compensating electric capacity CL2, and compensating electric capacity CL3 is connected in parallel on the two of compensating electric capacity CL1 and compensating electric capacity CL2
The connecting line of end, A.C. contactor normally closed switch K1-1 and compensating electric capacity CL1 are equipped with current transformer L3, and A.C. contactor is normal
Make and break closes the connecting line that K1-2 is connected on the connecting line of compensating electric capacity CL1 and compensating electric capacity CL2 and is equipped with current transformer L2,
The connecting line of A.C. contactor normally closed switch K1-3 and compensating electric capacity CL2 are equipped with current transformer L1, compensating electric capacity CL1,
CL2, CL3 are connected on 1 foot and 2 feet of bridge rectifier diode D9-D12, the 3 feet ground connection of bridge rectifier diode D9-D12, and 4
Foot is connected respectively to one end of resistance R14 and is connected to 1 foot of light sensation coupler IC3, another termination of resistance R14 through resistance R15
Ground, the 2 feet ground connection of light sensation coupler IC3.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810967061.3A CN109066713B (en) | 2018-08-23 | 2018-08-23 | Electric power reactive compensation capacitor detection and alternating current contactor protection circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810967061.3A CN109066713B (en) | 2018-08-23 | 2018-08-23 | Electric power reactive compensation capacitor detection and alternating current contactor protection circuit |
Publications (2)
| Publication Number | Publication Date |
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| CN109066713A true CN109066713A (en) | 2018-12-21 |
| CN109066713B CN109066713B (en) | 2021-03-23 |
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|---|---|---|---|
| CN201810967061.3A Active CN109066713B (en) | 2018-08-23 | 2018-08-23 | Electric power reactive compensation capacitor detection and alternating current contactor protection circuit |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112769104A (en) * | 2021-01-15 | 2021-05-07 | 辽宁东盛安信电能控制技术有限公司 | Circuit system for protecting power capacitor |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2442437Y (en) * | 2000-09-01 | 2001-08-08 | 刘建新 | One group silicon controlled reactifier projection and switch multiway capacitance compensator |
| CN2686182Y (en) * | 2003-05-20 | 2005-03-16 | 陈建荣 | Adier capacitance compensation digital controlled projecting and switching device |
| US20080203979A1 (en) * | 2005-09-26 | 2008-08-28 | Ruitian Su | Customer Intelligent Reactive Power Automatic Compensation Energy-Saved Device |
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2018
- 2018-08-23 CN CN201810967061.3A patent/CN109066713B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2442437Y (en) * | 2000-09-01 | 2001-08-08 | 刘建新 | One group silicon controlled reactifier projection and switch multiway capacitance compensator |
| CN2686182Y (en) * | 2003-05-20 | 2005-03-16 | 陈建荣 | Adier capacitance compensation digital controlled projecting and switching device |
| US20080203979A1 (en) * | 2005-09-26 | 2008-08-28 | Ruitian Su | Customer Intelligent Reactive Power Automatic Compensation Energy-Saved Device |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112769104A (en) * | 2021-01-15 | 2021-05-07 | 辽宁东盛安信电能控制技术有限公司 | Circuit system for protecting power capacitor |
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| Publication number | Publication date |
|---|---|
| CN109066713B (en) | 2021-03-23 |
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