CN106505739A - A kind of control loop with self-checking function - Google Patents
A kind of control loop with self-checking function Download PDFInfo
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- CN106505739A CN106505739A CN201611113443.7A CN201611113443A CN106505739A CN 106505739 A CN106505739 A CN 106505739A CN 201611113443 A CN201611113443 A CN 201611113443A CN 106505739 A CN106505739 A CN 106505739A
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- H02J13/0006—
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/327—Testing of circuit interrupters, switches or circuit-breakers
- G01R31/3277—Testing of circuit interrupters, switches or circuit-breakers of low voltage devices, e.g. domestic or industrial devices, such as motor protections, relays, rotation switches
- G01R31/3278—Testing of circuit interrupters, switches or circuit-breakers of low voltage devices, e.g. domestic or industrial devices, such as motor protections, relays, rotation switches of relays, solenoids or reed switches
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/50—Testing of electric apparatus, lines, cables or components for short-circuits, continuity, leakage current or incorrect line connections
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/50—Testing of electric apparatus, lines, cables or components for short-circuits, continuity, leakage current or incorrect line connections
- G01R31/66—Testing of connections, e.g. of plugs or non-disconnectable joints
- G01R31/67—Testing the correctness of wire connections in electric apparatus or circuits
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Abstract
The application provides a kind of control loop with self-checking function, connects the chopper being connected with operation power, and the interior contacts that the chopper is included Inside coil and is connected with the Inside coil, the control loop include：Electric current keeps loop, is serially connected between the interior contacts of the operation power and the chopper, internally provides electric current for the Inside coil in coil operations；First monitoring circuit, in parallel with the detection contact of relay, sense the action correctness of the detection contact of the relay；Second monitoring circuit, is serially connected between the interior contacts of the operation power and the chopper, senses the electrical integrity of the relay control circuit.The application can be monitored to the integrity and correctness of electric loop simultaneously, realize the repair based on condition of component to whole control loop.
Description
This application claims the applying date is on January 19th, 2016, the application for a patent for invention of Application No. 201610035618.0
The priority of " a kind of control loop with self-checking function ", the entire disclosure of which are included in the application model by reference
Within enclosing.
Technical field
The application is related to industrial control field, more particularly to a kind of control loop with self-checking function.
Background technology
In transformer station, whether various loop connections are normal, have influence on whether transformer station safely and reliably can work, and are to become
The operating major issue in power station.Generally, the electrical equipment of power system is all to loop according to the turn(a)round for specifying
Checked or overhauled (safeguard, debugging, test), its cycle is fixed 1 year or several years, that is, usually said regular
Maintenance.
With the continuous development of electrical network, transformer station's scale expanding day, the workload that periodic inspection is brought become transformer station
The heavy burden of operating maintenance personnel.It is desirable to by certain self-inspection means, allowing equipment to be capable of the strong of real-time assessment oneself
Health state, arranges service work again when certain loop is broken down, and this maintenance mode is referred to as repair based on condition of component.Repair based on condition of component makes
Attendant or expert promptly can be predicted to the to-be of equipment with current state according to before equipment, determined
Should overhaul or not, when overhaul, what position is overhauled.
Chopper is very important equipment in transformer station, and when system jam, protection equipment and intelligence are eventually
End coordinates and completes the control to chopper, by chopper can disengagement failure electric current rapidly, so as to Accident prevention expansion, it is ensured that
The stable operation of whole power system.Therefore the quality of breaker control circuit is directly affected and whether quickly can cut off failure,
Most important.
Whether breaker control circuit is normally to complete monitoring by whether control loop breaks at present.Control loop
Whether break and mainly there are two methods at present：
1st, relay is thought highly of and dynamic realizes that loop is monitored.
Referring to Fig. 1, the control loop includes：Relay coil TBJ, HBJ, TWJ, HWJ；The contact of corresponding relay
TBJA、HBJA、TWJA、HWJA；Resistance R1, R2, R3, R4；The contact J1 of tripping operation；The contact J2 of combined floodgate；Circuit breaker internal connects
Point DL1, DL2, can open according to the change of circuit breaker position or close.Above-mentioned control loop and 1 electric coupling of chopper.
When chopper 1 is in divides position, the contact DL2 junction closures of circuit breaker internal.By taking combined floodgate as an example, when connecing for closing a floodgate
When point J2 is closed, relay coil HBJ excitations, thus contact HBJA closures of relay, the closing coil of whole chopper encourages
Magnetic, mechanism action, action finish rear DL2 contacts and open, now the relay coil HBJ refusals of excitation, the contact HBJA of relay
Also open, mechanism action is finished, the contact DL1 junction closures of circuit breaker internal.
Under normal circumstances, in the case that the contact DL1 or DL2 of circuit breaker internal mono- is opened, another contact is to close
Close.When the contact DL1 of circuit breaker internal is closed, relay coil HWJ excitations, the contact HWJA closures of relay；When disconnected
When contact DL2 inside the device of road is closed, relay coil TWJ excitations, the contact TWJA closures of relay.By back production relay
Contact TWJA and HWJA, when two contacts are all opened, meaning trip(ping) circuit and closing circuit be not turned on, now
Report control loop template.
2nd, optocoupler back production realizes that loop is monitored.
Referring to Fig. 2, the control loop includes：Optocoupler TWJA, HWJA, the control loop can carry out letter by optocoupler
Number collection；Resistance R1, R2, R3, R4；The contact J1 of tripping operation；The contact J2 of combined floodgate；Contact DL1, DL2 of circuit breaker internal, meeting
Opened according to the change of 1 position of chopper or closed.Above-mentioned control loop and 1 electric coupling of chopper.
Under normal circumstances, in the case that the contact DL1 or DL2 of circuit breaker internal mono- is opened, another contact is to close
Close.When the contact DL1 of circuit breaker internal is closed, optocoupler HWJA is turned on；When the contact DL2 of circuit breaker internal is closed, light
Coupling TWJA.By the signal of back production optocoupler TWJA and HWJA, when two contacts are all opened, trip(ping) circuit and combined floodgate is meaned
Loop is not turned on, this Times control loop template.
The control loop of above two method can monitor whether trip(ping) circuit or closing circuit are intact, but such as
There is abnormal situation in the contact J1 of fruit relay tripping operation, the contact J2 of combined floodgate, such as cannot action or contact adhesion, then can lead
Cause loop misoperation or relay fail cannot breaker tripping and closing serious consequence.Substation field is because relay causes serious thing extremely
Therefore situation happen occasionally, and the control loop of above two method cannot realize the monitoring to action connection point J1, J2.Cause
This, existing control loop can only monitor the integrity of closing loop, it is impossible to monitor the correctness of closing loop, i.e., without
The whole loop of method guarantee can when needing correct operation, it is impossible to realize repair based on condition of component to whole control loop.
Therefore, how simultaneously the integrity of monitoring breaker closing loop and correctness become in prior art and urgently solve
Technical problem certainly.
Content of the invention
In view of this, the application provides a kind of control loop with self-checking function, and which can be simultaneously to the complete of electric loop
Whole property and correctness are monitored, and realize the repair based on condition of component to whole control loop.
The application provides a kind of control loop with self-checking function, connects the chopper being connected with operation power, described
The interior contacts that chopper is included Inside coil and is connected with the Inside coil, the control loop include：
Electric current keeps loop, is serially connected between the interior contacts of the operation power and the chopper, internally coil
Electric current is provided for the Inside coil in operating process；
First monitoring circuit, in parallel with the detection contact of relay, just sensing the action of detection contact of the relay
True property；
Second monitoring circuit, is serially connected between the interior contacts of the operation power and the chopper, sensing described after
The electrical integrity in electrical equipment control loop.
Further, the action for detecting contact that first monitoring circuit senses the relay by action threshold is correct
Property.
Further, second monitoring circuit senses the electric complete of the relay control circuit by action threshold
Property.
Further, the chopper includes：First interior contacts of breaking coil and breaking coil connection, combined floodgate
Coil and the second interior contacts of closing coil connection.
Further, first interior contacts and second interior contacts are beaten according to the change of the circuit breaker position
Open or close, and the state of first interior contacts and second interior contacts is contrary.
Further, the electric current keeps loop to include：
First electric current keeps sub-loop, is serially connected between the operation power and first interior contacts；
Second electric current keeps sub-loop, is serially connected between the operation power and second interior contacts.
Further, first electric current keeps sub-loop to include：The contact of the first relay of concatenation, the second relay
Contact, the coil of the 3rd relay and the contact with first relay, the contact of the second relay in parallel the 3rd after
The contact of electrical equipment；
Second electric current keeps sub-loop to include：The contact of the 4th relay of concatenation, the contact of the 5th relay, the
The coil of six relays and the contact with the 4th relay, the contact of the 5th relay the 6th relay in parallel connects
Point.
Further, first monitoring circuit includes：First Phototube Coupling in parallel with the contact of first relay
Circuit and second photoelectric isolating circuit in parallel with the contact of second relay；In parallel with the contact of the 4th relay
The 3rd photoelectric isolating circuit and fourth photoelectric isolating circuit in parallel with the contact of the 5th relay,
First photoelectric isolating circuit includes first resistor and the first breakover element, and one end connection of the first resistor is described
Operation power, the other end connect the positive pole of first breakover element, and the negative pole of first breakover element is connected to described the
Between the contact of the contact of one relay and second relay；
Second photoelectric isolating circuit includes second resistance and the second breakover element, and one end connection of the second resistance is described
Between the contact of the contact of the first relay and second relay, the other end connects the positive pole of first breakover element,
The negative pole of first breakover element is connected to one end of the coil of the 3rd relay；
3rd photoelectric isolating circuit includes 3rd resistor and the 3rd breakover element, and one end connection of the 3rd resistor is described
Operation power, the other end connect the positive pole of the 3rd breakover element, and the negative pole of the 3rd breakover element is connected to described the
Between the contact of the contact of four relays and the 5th relay；
4th photoelectric isolating circuit includes the 4th resistance and the 4th breakover element, and one end connection of the 4th resistance is described
Between the contact of the contact of the 4th relay and the 5th relay, the other end connects the positive pole of the 4th breakover element,
The negative pole of the 4th breakover element is connected to one end of the coil of the 6th relay.
Further, second monitoring circuit includes and the first photoelectric isolating circuit, the second photoelectric isolating circuit for concatenating
5th photoelectric isolating circuit in parallel and the 6th light in parallel with the 3rd photoelectric isolating circuit, the 4th photoelectric isolating circuit that concatenate
Electric isolating circuit,
5th photoelectric isolating circuit includes the 5th resistance and the 5th breakover element, one end connection of the 5th resistance
The operation power, the other end connect the positive pole of the 5th breakover element, and the negative pole of the 5th breakover element is connected to institute
State the negative pole of the second breakover element；
6th photoelectric isolating circuit includes the 6th resistance and the 6th breakover element, one end connection of the 6th resistance
The operation power, the other end connect the positive pole of the 6th breakover element, and the negative pole of the 6th breakover element is connected to institute
State the negative pole of the 4th breakover element.
Further, the breakover element is optocoupler components or similar current sensing.
Further, the chopper have with closing coil be directly or indirectly connected for monitoring closing coil loop
3rd interior contacts.
Further, in the case where the chopper monitors closing coil loop by the 3rd interior contacts, institute
State one end of the 3rd interior contacts of the negative pole connection chopper of the 4th breakover element.
The application also provides a kind of control loop with self-checking function, connects the chopper being connected with operation power, institute
The interior contacts that chopper is included Inside coil and is connected with the Inside coil are stated, the control loop includes：
Relay circuit, is composed in series by the contact of the contact and the second relay of the first relay, relay circuit one
End is connected with operation power, and the interior contacts that the other end is provided with chopper are connected.
First monitoring circuit, in parallel with relay circuit, sense the relay tip and loop action correctness and
Electrical integrity.
Further, the chopper has the first interior contacts for driving Inside coil, monitors the of Inside coil loop
Two interior contacts.
Further, when the relay circuit is turned on, the relay tip of two concatenations is closed；At relay circuit
When self-inspection state, two concatenation relay tip at least one be in open mode.
Further, the first described monitoring circuit includes the first sensing circuit and the second sensing circuit, first sensing
Circuit is in parallel with the contact of first relay, the loop that second sensing circuit is located with second relay tip
In parallel.
Further, when first relay tip is closed, and second relay tip is opened, the first sensing circuit
The electric parameters for sensing should be less than the first action threshold value, second sensing circuit senses to electric parameters should be greater than second and move
Make threshold value；When first relay tip is opened, and second relay tip is closed, the first sensing circuit sense
The electric parameters for measuring should be greater than the second action threshold value, second sensing circuit senses to electric parameters should be less than the first action
Threshold value；When the contact of first relay and second relay is opened simultaneously, first sensing circuit and the
Two sensing circuit senses to electric parameters should be greater than the first action threshold value, while should be less than the second action threshold value.
From above technical scheme, the application is by being serially connected in the interior contacts of the operation power and the chopper
Between control loop and the first monitoring circuit for being attempted by control loop sense the relay detection contact action
Correctness, the second monitoring circuit sense the electrical integrity of the relay control circuit.Or, by the first monitoring circuit sense
Survey action correctness and the electrical integrity of the relay circuit contact.Therefore, the application can be simultaneously to the complete of electric loop
Whole property and correctness are monitored, ensure whole loop can when needing correct operation, realize to whole control loop
Repair based on condition of component.
Description of the drawings
In order to be illustrated more clearly that the embodiment of the present application or technical scheme of the prior art, below will be to embodiment or existing
Accompanying drawing to be used needed for having technology description is briefly described, it should be apparent that, drawings in the following description are only this
Some embodiments described in application, for those of ordinary skill in the art, can be obtaining other according to these accompanying drawings
Accompanying drawing.
Fig. 1 is a kind of circuit diagram of the existing control loop with self-checking function；
Fig. 2 is the circuit diagram of another kind of existing control loop with self-checking function；
Fig. 3 is the circuit diagram of an embodiment of the control loop that the application has self-checking function；
Fig. 4 is the circuit diagram that the application has closing circuit in the control loop of self-checking function；
Fig. 5 is the circuit diagram that the application has another embodiment of closing circuit in the control loop of self-checking function；
Fig. 6 is the circuit diagram of the another embodiment of the control loop that the application has self-checking function；
Fig. 7 is the circuit diagram of the closing circuit another embodiment that the application has self-checking function.
Specific embodiment
The application keeps loop by the electric current being serially connected between the operation power and the interior contacts of the chopper
Internally electric current is provided for the Inside coil in coil operations.And the first monitoring circuit senses the detection of the relay
The action correctness of contact.Second monitoring circuit senses the electrical integrity of the relay control circuit.Or, by first
Monitoring circuit senses the action correctness of the detection contact of the relay and electrical integrity.Therefore, the application can be simultaneously right
The integrity of electric loop and correctness are monitored, ensure whole loop can when needing correct operation, it is right to realize
The repair based on condition of component of whole control loop.
Certainly, the arbitrary technical scheme for implementing the application must be not necessarily required to while reaching above all advantages.
In order that those skilled in the art more fully understand the technical scheme in the application, below in conjunction with the embodiment of the present application
In accompanying drawing, to the embodiment of the present application in technical scheme be clearly and completely described, it is clear that described embodiment is only
It is some embodiments of the present application, rather than whole embodiments.Embodiment in based on the application, ordinary skill people
The every other embodiment obtained by member, should all belong to the scope of the application protection.
The application is further illustrated with reference to illustrations to implement.
Referring to Fig. 3, one specific embodiment of the application provides a kind of control loop with self-checking function, the control loop
2 connection choppers 1, the interior contacts 12 that the chopper 1 is included Inside coil 11 and is connected with the Inside coil 11.
The control loop 2 includes：
Electric current keeps loop 21, is serially connected between operation power and the interior contacts 12 of the chopper 1, internally coil
It is that the Inside coil 11 provides electric current in 11 operating process.
First monitoring circuit 22, in parallel with the contact of relay, sense the action correctness of the contact of the relay.
Second monitoring circuit 23, is serially connected between the operation power and the interior contacts 12 of the chopper 1, senses institute
State the electrical integrity of control loop.
Therefore, the application can be monitored to the integrity and correctness of electric loop simultaneously, ensure that whole loop can
Correct operation when needing, realizes the repair based on condition of component to whole control loop.
Further, referring to Fig. 3, the Inside coil 11 of the chopper 1 includes：Breaking coil 111, closing coil 112；Institute
The interior contacts 12 for stating chopper 1 include：The first interior contacts DL1 being connected with the breaking coil 111 and the closing line
Second interior contacts DL2 of 112 connection of circle.
First interior contacts DL1 and second interior contacts DL2 are beaten according to the change of 1 position of the chopper
Open or close, and the state of first interior contacts DL1 and second interior contacts DL2 is contrary.As DL1 is closed
When, DL2 is to open；When closing such as DL2, DL1 is to open.
Specifically, the electric current keeps loop 21 to include：
First electric current keeps sub-loop 211, is serially connected between the operation power and first interior contacts DL1.
Second electric current keeps sub-loop 212, is serially connected between the operation power and second interior contacts DL2.
First electric current keeps sub-loop 211 to include：The contact J1 of the first relay of concatenation, the second relay connect
Point J2, the coil TBJ of the 3rd relay and the contact J1 with first relay, the contact J2 of the second relay are in parallel
The contact TBJA of the 3rd relay, the contact J2 of the contact J1 and the second relay of first relay is dynamic for tripped
Make contact.
Second electric current keeps sub-loop 212 to include：The contact J3 of the 4th relay of concatenation, the 5th relay connect
Point J4, the coil HBJ of the 6th relay and the contact J3 with the 4th relay, the contact J4 of the 5th relay are in parallel
The contact HBJA of the 6th relay, the contact J3 of the 4th relay and contact J4 of the 5th relay are dynamic for closed a floodgate
Make contact.
First electric current keeps the operation principle of sub-loop 211 as follows：Referring to Fig. 3, in first interior contacts DL1
On the premise of closure, when the contact J2 of the contact J1 and the second relay of first relay is closed at, electric current I2Flow through
The coil TBJ of the 3rd relay.After the coil TBJ excitations of the 3rd relay, the contact TBJA closures of the 3rd relay are just formed
Electric current I1, I1Also the contact TBJA of threeth relay is flow through.Even if now the contact J1 of first relay and the second relay
The contact J2 of device is opened, I2For 0, due to I1Also exist, so the coil TBJ of the 3rd relay still excitations, the 3rd relay
Contact TBJA is still within closure state, thus by electric current I1Maintain, electric current is provided to 1 breaking coil 111 of chopper,
Here it is the principle that electric current keeps.After the tripping operation of chopper 1 is finished, first interior contacts DL1 can be opened, thus electric current I1
For 0, then the coil TBJ no currents of the 3rd relay pass through, and coil is opened without excitation, then the contact TBJA of the 3rd relay, whole
Individual tripping operation process is completed.
Second electric current keeps the operation principle of sub-loop 212 to be similar to, and no longer repeats here.
The action that first monitoring circuit 22 senses the detection contact 13 of the relay 1 by action threshold is correct
Property.
Specifically, first monitoring circuit 22 includes：First photoelectricity in parallel with the contact J1 of first relay
Isolation circuit 221 and second photoelectric isolating circuit 222 in parallel with the contact J2 of second relay；With the 4th relay
The contact J3 of device the 3rd photoelectric isolating circuit 223 in parallel and fourth photoelectricity in parallel with the contact J4 of the 5th relay every
From circuit 224.
First photoelectric isolating circuit 221 includes first resistor R1 and the first breakover element OPT1, first resistor R1
One end connects the operation power, and the other end connects the positive pole of the first breakover element OPT1, first breakover element
The negative pole of OPT1 is connected between the contact J2 of the contact J1 of first relay and second relay.
Second photoelectric isolating circuit 222 includes second resistance R2 and the second breakover element OPT2, second resistance R2
One end connects between the contact J1 of the first relay and contact J2 of second relay, other end connection described second
The positive pole of breakover element OPT2, the negative pole of the second breakover element OPT2 are connected to the chopper 1.
3rd photoelectric isolating circuit 223 includes 3rd resistor R3 and the 3rd breakover element OPT3,3rd resistor R3
One end connects the operation power, and the other end connects the positive pole of the 3rd breakover element OPT3, the 3rd breakover element
The negative pole of OPT3 is connected between the contact J4 of contact J3 and the 5th relay of the 4th relay.
4th photoelectric isolating circuit 224 includes the 4th resistance R4 and the 4th breakover element OPT4, the 4th resistance R4's
One end connects between the contact J3 of the 4th relay and contact J4 of the 5th relay, other end connection the described 4th
The positive pole of breakover element OPT4, the negative pole of the 4th breakover element OPT4 are connected to the chopper 1.
Second monitoring circuit 23 senses the electrical integrity of the control loop 2 by action threshold.
Specifically, second monitoring circuit 23 includes and the first photoelectric isolating circuit 221, the second Phototube Coupling for concatenating
5th photoelectric isolating circuit 231 of 222 parallel connection of circuit and with concatenate the 3rd photoelectric isolating circuit 223, the 4th Phototube Coupling electricity
6th photoelectric isolating circuit 232 of 224 parallel connection of road.
5th photoelectric isolating circuit 231 includes the 5th resistance R5 and the 5th breakover element HWJ, the 5th resistance R5
One end connect the operation power, the other end connects the positive pole of the 5th breakover element HWJ, the 5th breakover element
The negative pole of HWJ is connected to the negative pole of the second breakover element OPT2.
6th photoelectric isolating circuit 231 includes the 6th resistance R6 and the 6th breakover element TWJ, the 6th resistance R6
One end connect the operation power, the other end connects the positive pole of the 6th breakover element TWJ, the 6th breakover element
The negative pole of TWJ is connected to the negative pole of the 4th breakover element OPT4.
In implementing, the breakover element is optocoupler components or similar current sensing.
Referring to Fig. 4, the 3rd photoelectric isolating circuit 223 of the connection of closing coil 122 in the chopper 1, described the
Four photoelectric isolating circuits 224 and the 6th photoelectric isolating circuit 231 are referred to as closing circuit.Carry out by taking closing circuit as an example
Illustrate how by sensing the control loop action correctness and electrical integrity.
In the chopper 1 breaking coil 121 connection first photoelectric isolating circuit 221, second photoelectricity every
Operation principle from circuit 222 and the 5th photoelectric isolating circuit 231 is similar to, and the application is not repeated to illustrate.Wherein I3
For flowing through the electric current of the 3rd photoelectric isolating circuit 223, I4For flowing through the electric current of the 4th photoelectric isolating circuit 224, I5For
Flow through the electric current of the 6th photoelectric isolating circuit 231.
When setting the electric current for flowing through photoelectric isolating circuit more than threshold value, the signal for collecting is 1, is otherwise 0.
If the second interior contacts DL2 are closed, the contact J3 of the 4th relay, the contact J4 of the 5th relay beat
Open, operating power voltage is U.6th resistance R6Resistance meet flow through the 6th resistance R6Electric current I5It is more than threshold value Ith1；3rd
Resistance R3With the 4th resistance R4Resistance meet flow through 3rd resistor R4With the 4th resistance R5Electric current I3、I4It is less than or equal to threshold value
Ith2 is：
If the second interior contacts DL2 are closed, the contact J3 closures of the 4th relay, the contact of the 5th relay
J4 is opened, and operating power voltage is U.4th resistance R4Resistance meet flow through the 4th resistance R5Electric current I4It is more than Ith2, i.e.,：
If the second interior contacts DL2 are closed, the contact J4 closures of the 5th relay, the contact of the 4th relay
J3 is opened, and operating power voltage is U.3rd resistor R3Resistance meet flow through 3rd resistor R3Electric current I3It is more than Ith, i.e.,：
3rd resistor R3With the 4th resistance R4Resistance must simultaneously meet formula 2,3,4.Threshold value Ith1 and threshold value Ith2 can
With equal.
When the second interior contacts DL2 are closed, the contact J3 of the 4th relay, the contact J4 of the 5th relay beat
When opening.If control loop and chopper 1 connect normally, now I5Threshold value, the shape of the 6th breakover element TWJ back production should be more than
State is 1, shows that closing circuit electrical connection is normal；If control loop and chopper 1 are electrically connected exception, I now occurs5
Threshold value is less than, the 6th breakover element TWJ back production states are 0 situation, thus judges that closing circuit electrical connection is abnormal.
Only in the case of closing circuit electrical connection is normal, to the contact J3 of the 4th relay described in Fig. 4, described
The contact J4 of the 5th relay carries out self-inspection.As shown in table 1, wherein TWJ-R, OPT3-R, OPT4-R are self-inspection logic true value table
6th breakover element, the 3rd breakover element, the back production signal of the 4th breakover element, electric current are 0 less than or equal to threshold value back production, electric current
It is 1 more than threshold value back production.J3-W, J4-W are the contact J3 of the 4th relay, the contact J4 self-inspections of the 5th relay
The control command that logic is issued, 0 represents that order contact is opened, and 1 represents order junction closure.
Table 1
When the back production signal TWJ-R of the 6th breakover element is 1, show that closing circuit electrical connection is normal, control loop
Allow access into self-inspection logic.Put first the contact J3 of the 4th relay, control command J3-W of the contact J4 of the 5th relay,
J4-W, then by the 3rd breakover element, the 4th breakover element back production signal OPT3-R, OPT4-R judging whether contact is deposited
In exception.
Such as under normal circumstances when contact J3 closures (J3-W is 1) of the 4th relay, the second contact of the second relay
Control command J4 open (J4-W is 0), now electric current I3Very little is certainly less than threshold value (back production signal OPT3-R is 0), electric current I4
More than threshold value (back production signal OPT4-R is 1).Work as J3-W=1, during J4-W=0, if back production signal OPT3-R=0, OPT4-
R=1, then judge that the contact J3 of the 4th relay is normal.
Other situation decision logics such as table 1.
For preventing closing circuit misoperation, contact J3 of the self-inspection logic not comprising the 4th relay, the 5th relay connect
Control command J3-W, J4-W of point J4 situation simultaneously for 1, the contact J4 of contact J3, the 5th relay when the 4th relay
Control command J3-W, J4-W simultaneously for 1 when, show that control loop, just in action, now exits self-inspection logic, but to upper
Secondary self-detection result is kept.
In any case, as long as detection abnormal phenomena, exits contact self-check program, the control for preventing follow-up self-inspection from bringing completely
Malfunction risk in loop processed, alarm are kept always.
Therefore, the application can be monitored to the integrity and correctness of electric loop simultaneously, ensure that whole loop can
Correct operation when needing, realizes the repair based on condition of component to whole control loop.
Referring to Fig. 6, it is another specific embodiment of the present invention, there is provided a kind of control loop with self-checking function.Described
Control loop 2 is serially connected between operation power and chopper 1, and control loop 2 is turned on, for chopper 1 Inside coil provide swash
Electric current is encouraged, 1 action of chopper is driven.
The control loop 2 includes：
Relay circuit 21, is composed in series by relay tip J1 and relay tip J2；
First monitoring circuit 22, is composed in series by the first sensing loop and the second sensing loop.
The chopper 1 include internal separating brake or closing coil and be connected with the Inside coil first inside connect
Point, chopper 1 optionally provide the second interior contacts for monitoring.In embodiment illustrated in fig. 6, chopper 1 is provided inside first
Contact DL1.
Specifically, the relay circuit 21 includes：
Contact J1, the contact J2 of the second relay of the first relay of concatenation.The contact J1 of first relay and
The contact J2 of the second relay is the action connection point for tripping.When control loop 2 be in self-inspection state when, two concatenation after
Electrical equipment contact J1, J2 only one of which is in closure state, or two concatenation contacts are not present while closing all in open mode
The situation of conjunction.
The contact J2 of the second relay as shown in Figure 6 may be gone here and there as needed other elements, and these belong to the application
The scope of protection, specifically such as：Seal in coil BJ of hard pressing plate Y1, electric current guard relay etc..
First monitoring circuit 22 senses the contact of first relay and the second relay by action threshold
Action correctness.
Specifically, first monitoring circuit 22 includes：First photoelectricity in parallel with the contact J1 of first relay
Isolation circuit 221 and second photoelectric isolating circuit 222 in parallel with the contact J2 of second relay.
First photoelectric isolating circuit 221 includes first resistor R1 and the first breakover element OPT1, first resistor R1
One end connects the operation power, and the other end connects the positive pole of the first breakover element OPT1, first breakover element
The negative pole of OPT1 is connected between the contact J2 of the contact J1 of first relay and second relay.
Second photoelectric isolating circuit 222 includes second resistance R2 and the second breakover element OPT2, second resistance R2
One end connects between the contact J1 of the first relay and contact J2 of second relay, other end connection described second
The positive pole of breakover element OPT2, the negative pole of the second breakover element OPT2 are connected to the chopper 1.
In implementing, the breakover element is optocoupler components or similar current sensing.
When the first relay tip J1 closes the second relay tip J2 to be opened, the first photoelectric isolating circuit 221 is sensed
To electric parameters should be less than the first action threshold value Ith3, the electric parameters that the second photoelectric isolating circuit 222 is sensed should be greater than
Two action threshold value Ith4；When the first relay tip J1 opens the second relay tip J2 to be closed, the first Phototube Coupling electricity
The electric parameters that road 221 senses should be greater than the second action threshold value Ith4, the electric parameters that the second photoelectric isolating circuit 222 is sensed
Should be less than the first action threshold value Ith3；When contact J1, J2 of the first relay and the second relay are opened simultaneously, the first light
The electric parameters that electric isolating circuit 221 and the second photoelectric isolating circuit 222 are sensed should be all higher than the first action threshold value Ith3, with
When should be less than the second action threshold value Ith4.
If the first photoelectric isolating circuit 221 of the first monitoring circuit 22 and the second photoelectric isolating circuit 222 have two actions
Threshold, respectively the first action threshold value Ith3 and the second action threshold value Ith4, operate between operation power positive pole and negative pole
Voltage is U, and first, second resistance in the first monitoring circuit 22 is R1 and R2, generally R1=R2, and threshold value sets
Determine method as shown in formula 5,6：
When circuit breaker internal contact DL1 is closed, the contact J1 of first relay, the contact J2 of second relay
During opening, the electric current I of resistance R1 is flowed through1With the electric current I for flowing through resistance R22Equal and meet formula 3, i.e. I1And I2Simultaneously greater than
During Ith3, then the electrical integrity of control loop is correct.
If circuit breaker internal contact DL1 is closed, the contact J1 closures of the first relay, the contact J2 of the second relay are beaten
Open, operating power voltage is U.When flowing through resistance R1Electric current I1Less than Ith3, resistance R is flow through2Electric current I2During more than Ith4,
Can determine whether that J1 contacts are normal, i.e.,：
Assume that circuit breaker internal contact DL1 closures, the contact J2 of second relay are closed, first relay
Contact J1 is opened, and operating power voltage is U.When flowing through resistance R1Electric current I1More than the second action threshold value Ith4, resistance is flow through
R2Electric current I2During less than the first action threshold value Ith3, can determine whether that J2 contacts and J2 places loop are normal, i.e.,：
Only in the case of control loop electrical integrity is normal, to the contact J1 of the first relay described in Fig. 5, institute
The contact J2 for stating the second relay carries out self-inspection.As shown in table 1, wherein OPT1-R, OPT2-R are respectively self-inspection logic true value table
First breakover element, the back production signal of the second breakover element, electric current are judged to 0 less than or equal to the second action threshold value Ith4 back production,
Electric current is judged to 1 more than the second action threshold value Ith4 back production.J1-W, J2-W be the contact J1 of first relay, described
The control command that the contact J2 self-inspection logics of two relays are issued, 0 represents that order contact is opened, and 1 represents order junction closure.
Table 2
Therefore, the application can be monitored to the integrity and correctness of electric loop simultaneously, ensure that whole loop can
Correct operation when needing, realizes the repair based on condition of component to whole control loop.
Further, referring to Fig. 5 and Fig. 7, for the closing circuit of chopper 1, in order to realize chopper inside chopper 1
Prevent chopper 1 from jumped between splitting or integrating back and forth during 1 failure, the interface mode between chopper 1 and control loop 2 is not limited to
An interface shown in Fig. 6.The closing circuit of the chopper 1 shown in Fig. 5 and Fig. 7 provides control input and monitoring input two
Interface, the electric current for connecting the application respectively keep loop/relay circuit 21 and the first monitoring circuit 22 and/or second to monitor back
Road 23.In this case, 1 interior contacts of chopper not only include DL1 and DL2, also include DL3, DL4 and anti-trip relay
Contact FTA, FTB.
Further, as shown in Fig. 5, Fig. 6, Fig. 7, electric current keep loop/relay circuit 21 and the first monitoring circuit 22 and/
Or second monitoring circuit 23 because of the different interior contacts for being connected respectively to chopper 1 that need of anti-bouncing function, electric current keep loop/
The element (such as pressing plate Y1, Y2, electric current guard relay coil BJ) increased in relay circuit, does not change the first relay tip
J1 and the series relationship of the second relay tip J2, and parallel relationship, second photoelectricity of the first photoelectric isolating circuit 221 and J1
Isolation circuit 222 and the parallel relationship of the parallel relationship in J2 places loop, the second monitoring circuit and the first monitoring circuit, thus
Belong to protection scope of the present invention.Increase the different element of other forms or loop in loop, still fall within present invention protection model
Enclose.
It will be understood by those skilled in the art that embodiments herein can be provided as method, device (equipment) or computer
Program product.Therefore, in terms of the application can adopt complete hardware embodiment, complete software embodiment or combine software and hardware
Embodiment form.And, the application can be adopted in one or more meters for wherein including computer usable program code
The upper computer journey that implements of calculation machine usable storage medium (including but not limited to disk memory, CD-ROM, optical memory etc.)
The form of sequence product.
The application is flow chart of the reference according to the method, device (equipment) and computer program of the embodiment of the present application
And/or block diagram is describing.It should be understood that can be by each flow process in computer program instructions flowchart and/or block diagram
And/or the combination of square frame and flow chart and/or the flow process in block diagram and/or square frame.These computer programs can be provided to refer to
Make the processor of general purpose computer, special-purpose computer, Embedded Processor or other programmable data processing devices to produce
One machine so that produced for realizing by the instruction of computer or the computing device of other programmable data processing devices
The device of the function of specifying in one flow process of flow chart or one square frame of multiple flow processs and/or block diagram or multiple square frames.
These computer program instructions may be alternatively stored in and can guide computer or other programmable data processing devices with spy
Determine in the computer-readable memory that mode works so that the instruction being stored in the computer-readable memory is produced to be included referring to
Make the manufacture of device, the command device realize in one flow process of flow chart or one square frame of multiple flow processs and/or block diagram or
The function of specifying in multiple square frames.
These computer program instructions can be also loaded in computer or other programmable data processing devices so that in meter
Series of operation steps is executed on calculation machine or other programmable devices to produce computer implemented process, so as in computer or
The instruction executed on other programmable devices is provided for realization in one flow process of flow chart or multiple flow processs and/or block diagram one
The step of function of specifying in individual square frame or multiple square frames.
Although having been described for the preferred embodiment of the application, those skilled in the art once know basic creation
Property concept, then can make other change and modification to these embodiments.So, claims are intended to be construed to include excellent
Select embodiment and fall into the had altered of the application scope and change.Obviously, those skilled in the art can be to the application
Various changes and modification are carried out without deviating from spirit and scope.So, if these modifications of the application and modification
Belong within the scope of the application claim and its equivalent technologies, then the application is also intended to exist comprising these changes and modification
Interior.
Claims (16)
1. a kind of control loop with self-checking function, connects the chopper being connected with operation power, and the chopper includes interior
Portion's coil and the interior contacts being connected with the Inside coil, it is characterised in that the control loop includes：
Electric current keeps loop, is serially connected between the interior contacts of the operation power and the chopper, internally coil manipulation
During provide electric current for the Inside coil；
First monitoring circuit, in parallel with the detection contact of relay, sense the action correctness of the detection contact of the relay；
Second monitoring circuit, is serially connected between the interior contacts of the operation power and the chopper, senses the relay
The electrical integrity of control loop.
2. control loop according to claim 1, it is characterised in that first monitoring circuit is sensed by action threshold
The action correctness of the detection contact of the relay.
3. control loop according to claim 2, it is characterised in that second monitoring circuit is sensed by action threshold
The electrical integrity of the relay control circuit.
4. control loop according to claim 3, it is characterised in that the chopper includes：Breaking coil and the jump
Second interior contacts of the first interior contacts of brake cable circle connection, closing coil and closing coil connection.
5. control loop according to claim 4, it is characterised in that connect inside first interior contacts and described second
Point is opened according to the change of the circuit breaker position or is closed, and first interior contacts and second interior contacts
State be contrary.
6. control loop according to claim 5, it is characterised in that the electric current keeps loop to include：
First electric current keeps sub-loop, is serially connected between the operation power and first interior contacts；
Second electric current keeps sub-loop, is serially connected between the operation power and second interior contacts.
7. control loop according to claim 6, it is characterised in that first electric current keeps sub-loop to include：Concatenation
The contact of the first relay, the contact of the second relay, the coil of the 3rd relay and connect with first relay
Point, the contact of the 3rd relay of the contact parallel connection of the second relay；
Second electric current keeps sub-loop to include：The contact of the 4th relay of concatenation, the contact of the 5th relay, the 6th after
The second of the coil of electrical equipment and the contact with the 4th relay, the contact of the 5th relay the 6th relay in parallel connects
Point.
8. control loop according to claim 7, it is characterised in that first monitoring circuit includes：With described first
The contact of relay the first photoelectric isolating circuit in parallel and second Phototube Coupling in parallel with the contact of second relay
Circuit；Threeth photoelectric isolating circuit in parallel with the contact of the 4th relay and in parallel with the contact of the 5th relay
The 4th photoelectric isolating circuit,
First photoelectric isolating circuit includes that first resistor and the first breakover element, one end of the first resistor connect the operation
Power supply, the other end connect the positive pole of first breakover element, the negative pole of first breakover element be connected to described first after
Between the contact of the contact of electrical equipment and second relay；
Second photoelectric isolating circuit includes second resistance and the second breakover element, one end connection described first of the second resistance
Between the contact of the contact of relay and second relay, the other end connects the positive pole of first breakover element, described
The negative pole of the first breakover element is connected to one end of the coil of the 3rd relay；
3rd photoelectric isolating circuit includes that 3rd resistor and the 3rd breakover element, one end of the 3rd resistor connect the operation
Power supply, the other end connect the positive pole of the 3rd breakover element, the negative pole of the 3rd breakover element be connected to the described 4th after
Between the contact of the contact of electrical equipment and the 5th relay；
4th photoelectric isolating circuit includes the 4th resistance and the 4th breakover element, one end connection the described 4th of the 4th resistance
Between the contact of the contact of relay and the 5th relay, the other end connects the positive pole of the 4th breakover element, described
The negative pole of the 4th breakover element is connected to one end of the coil of the 6th relay.
9. control loop according to claim 8, it is characterised in that second monitoring circuit includes and first for concatenating
The 5th in parallel photoelectric isolating circuit of photoelectric isolating circuit, the second photoelectric isolating circuit and electric with the 3rd Phototube Coupling for concatenate
Road, the 4th photoelectric isolating circuit the 6th photoelectric isolating circuit in parallel,
5th photoelectric isolating circuit includes the 5th resistance and the 5th breakover element, and one end connection of the 5th resistance is described
Operation power, the other end connect the positive pole of the 5th breakover element, and the negative pole of the 5th breakover element is connected to described the
The negative pole of two breakover elements；
6th photoelectric isolating circuit includes the 6th resistance and the 6th breakover element, and one end connection of the 6th resistance is described
Operation power, the other end connect the positive pole of the 6th breakover element, and the negative pole of the 6th breakover element is connected to described the
The negative pole of four breakover elements.
10. control loop according to claim 9, it is characterised in that the breakover element be optocoupler components or
Similar current sensing.
11. control loops according to claim 4, it is characterised in that the chopper have with closing coil directly or
The 3rd interior contacts for monitoring closing coil loop being indirectly connected to.
12. control loops according to claim 11, it is characterised in that connect inside the chopper is by the described 3rd
In the case of point monitoring closing coil loop, the negative pole of the 4th breakover element connects inside the described 3rd of the chopper the
One end of contact.
A kind of 13. control loops with self-checking function, connect the chopper being connected with operation power, and the chopper includes interior
Portion's coil and the interior contacts being connected with the Inside coil, it is characterised in that the control loop includes：
Relay circuit, is composed in series by the contact of the contact and the second relay of the first relay, relay circuit one end with
Operation power is connected, and the interior contacts that the other end is provided with chopper are connected；
First monitoring circuit, in parallel with relay circuit, sense the action correctness and electrically in the relay tip and loop
Integrity.
14. control loops according to claim 13, it is characterised in that the chopper has and drives the of Inside coil
One interior contacts, monitor second interior contacts in Inside coil loop.
15. control loops according to claim 14, it is characterised in that when the relay circuit is turned on, two concatenations
Relay tip close；When relay circuit be in self-inspection state when, two concatenation relay tip at least one
It is in open mode.
16. control loops according to claim 15, it is characterised in that the first described monitoring circuit includes the first sensing
Circuit and the second sensing circuit, first sensing circuit are in parallel with the contact of first relay, the second sensing electricity
The loop that road is located with second relay tip is in parallel.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610035618.0A CN105656201A (en) | 2016-01-19 | 2016-01-19 | Control loop having self-detection function |
| CN2016100356180 | 2016-01-19 |
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| CN106505739A true CN106505739A (en) | 2017-03-15 |
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| CN201611113443.7A Active CN106505739B (en) | 2016-01-19 | 2016-12-06 | A kind of control loop with self-checking function |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106872930A (en) * | 2017-04-05 | 2017-06-20 | 中国电力科学研究院 | The loop break-make self-checking unit and method of a kind of electric energy meter field testing equipment |
| CN110739179A (en) * | 2019-10-09 | 2020-01-31 | 国网江苏省电力有限公司电力科学研究院 | transformer substation circuit breaker control loop and monitoring method thereof |
| CN111273197A (en) * | 2020-04-01 | 2020-06-12 | 福建龙净脱硫脱硝工程有限公司 | Electrical equipment testing method and device |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP7135548B2 (en) * | 2018-08-01 | 2022-09-13 | 株式会社ジェイテクト | Power supply monitoring device and power supply monitoring method |
| CN116840740B (en) * | 2023-08-25 | 2023-11-03 | 珠海菲森电力科技有限公司 | Control loop detection circuit and method and electronic equipment |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050144489A1 (en) * | 2003-12-25 | 2005-06-30 | Fujitsu Limited | Power supply control apparatus, power supply control system, and administration apparatus |
| EP2301822A2 (en) * | 2009-09-24 | 2011-03-30 | JTEKT Corporation | Electric power steering system |
| CN201993868U (en) * | 2010-12-29 | 2011-09-28 | 福建俊豪电子有限公司 | Circuit for monitoring circuit breaker and alarming |
| CN102315621A (en) * | 2010-07-06 | 2012-01-11 | 益而益(集团)有限公司 | Electric wire connection protecting device with self-checking function |
-
2016
- 2016-01-19 CN CN201610035618.0A patent/CN105656201A/en active Pending
- 2016-12-06 CN CN201611113443.7A patent/CN106505739B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050144489A1 (en) * | 2003-12-25 | 2005-06-30 | Fujitsu Limited | Power supply control apparatus, power supply control system, and administration apparatus |
| EP2301822A2 (en) * | 2009-09-24 | 2011-03-30 | JTEKT Corporation | Electric power steering system |
| CN102315621A (en) * | 2010-07-06 | 2012-01-11 | 益而益(集团)有限公司 | Electric wire connection protecting device with self-checking function |
| CN201993868U (en) * | 2010-12-29 | 2011-09-28 | 福建俊豪电子有限公司 | Circuit for monitoring circuit breaker and alarming |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106872930A (en) * | 2017-04-05 | 2017-06-20 | 中国电力科学研究院 | The loop break-make self-checking unit and method of a kind of electric energy meter field testing equipment |
| CN110739179A (en) * | 2019-10-09 | 2020-01-31 | 国网江苏省电力有限公司电力科学研究院 | transformer substation circuit breaker control loop and monitoring method thereof |
| CN111273197A (en) * | 2020-04-01 | 2020-06-12 | 福建龙净脱硫脱硝工程有限公司 | Electrical equipment testing method and device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105656201A (en) | 2016-06-08 |
| CN106505739B (en) | 2019-06-14 |
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