CN106505739B - 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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- CN106505739B CN106505739B CN201611113443.7A CN201611113443A CN106505739B CN 106505739 B CN106505739 B CN 106505739B CN 201611113443 A CN201611113443 A CN 201611113443A CN 106505739 B CN106505739 B CN 106505739B
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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, connect the breaker connecting with operation power, the breaker includes Inside coil and the interior contacts that connect with the Inside coil, the control loop includes: that electric current keeps circuit, it is serially connected between the operation power and the interior contacts of the breaker, provides electric current in internal coil operations for the Inside coil；First monitoring circuit, it is 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 operation power and the interior contacts of the breaker, senses the electrical integrity of the relay control circuit.The application can simultaneously be monitored the integrality and correctness of electric loop, realize the repair based on condition of component to entire control loop.
Description
It is on January 19th, 2016 this application claims the applying date, application No. is 201610035618.0 applications for a patent for invention
The priority of " a kind of control loop with self-checking function ", all the contents of the application are included in the application model by reference
Within enclosing.
Technical field
This application involves industrial control field more particularly to a kind of control loops with self-checking function.
Background technique
Whether various circuit connections are normal in substation, influence whether substation can safely and reliably work, and are to become
The running major issue in power station.Under normal circumstances, the electrical equipment of electric system is all the turn(a)round according to regulation to circuit
It is checked or is overhauled (maintenance, debugging, test), the period is fixed 1 year or several years, that is, usually said regular
Maintenance.
With the continuous development of power grid, substation's scale is growing, and periodic inspection bring workload becomes substation
The heavy burden of operating maintenance personnel.Therefore, it is desirable to allow equipment that can assess the strong of oneself in real time by certain self-test means
Health state, service work is arranged when certain circuit is broken down again, and this maintenance mode is known as repair based on condition of component.Repair based on condition of component enables
Maintenance personnel or expert promptly can predict the future state of equipment with current state according to before equipment, determine
It should overhaul or not, when overhaul, what position is overhauled.
Breaker is very important equipment in substation, and when system jam, protection equipment and intelligence are eventually
Control to breaker is completed in end cooperation, disengagement failure electric current can be guaranteed to prevent fault spread rapidly by breaker
The stable operation of entire electric system.Therefore the quality of breaker control circuit directly affects whether can quickly cut off failure,
It is most important.
Whether whether breaker control circuit be normally to be broken by control loop to complete monitoring at present.Control loop
Whether breaking at present, there are mainly two types of methods:
1, relay thinks highly of the monitoring of dynamic realization circuit.
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；The contact J2 of combined floodgate；Circuit breaker internal connects
Point DL1, DL2 can be opened or are closed according to the variation of circuit breaker position.Above-mentioned control loop and 1 electric coupling of breaker.
When breaker 1 is in quartile, the contact DL2 junction closure of circuit breaker internal.For closing a floodgate, when connecing for combined floodgate
When point J2 is closed, relay coil HBJ excitation, thus the contact HBJA closure of relay, the closing coil of entire breaker are encouraged
Magnetic, mechanism action, DL2 contact is opened after movement, at this time the relay coil HBJ refusal of excitation, the contact HBJA of relay
Also it opens, mechanism action finishes, the contact DL1 junction closure of circuit breaker internal.
Under normal circumstances, another contact is to close in the case where the contact DL1 or DL2 of circuit breaker internal mono- opening
It closes.When the contact DL1 of circuit breaker internal closure, relay coil HWJ excitation, the contact HWJA closure of relay；When disconnected
When contact DL2 inside the device of road is closed, relay coil TWJ excitation, the contact TWJA closure of relay.Pass through back production relay
Contact TWJA and HWJA mean that trip(ping) circuit and closing circuit are not turned on, at this time when two contacts are all opened
Report control loop template.
2, circuit monitoring is realized in optocoupler back production.
Referring to fig. 2, the control loop includes: optocoupler TWJA, HWJA, and the control loop can carry out letter by optocoupler
Number acquisition；Resistance R1, R2, R3, R4；The contact J1 of tripping；The contact J2 of combined floodgate；Contact DL1, DL2 of circuit breaker internal, meeting
It opens or is closed according to the variation of 1 position of breaker.Above-mentioned control loop and 1 electric coupling of breaker.
Under normal circumstances, another contact is to close in the case where the contact DL1 or DL2 of circuit breaker internal mono- opening
It closes.When the contact DL1 of circuit breaker internal closure, optocoupler HWJA conducting；When the contact DL2 of circuit breaker internal closure, 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 are meaned
Circuit 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, the contact J2 of combined floodgate, for example can not act or contact adhesion, then can lead
Cause circuit malfunction or relay fail can not breaker tripping and closing serious consequence.Substation field is because relay leads to serious thing extremely
Therefore situation happen occasionally, and the control loop of above two method cannot achieve the monitoring to action connection point J1, J2.Cause
This, existing control loop can only monitor the integrality of closing loop, be unable to monitor the correctness of closing loop, i.e., without
Method ensures that entire circuit can correctly act when needed, cannot achieve the repair based on condition of component to entire control loop.
Therefore, how simultaneously monitoring breaker closing loop integrality and correctness become urgently solve in the prior art
Certainly the technical issues of.
Summary of the invention
In view of this, the application provides a kind of control loop with self-checking function, it 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 entire control loop.
The application provides a kind of control loop with self-checking function, connects the breaker connecting with operation power, described
Breaker includes Inside coil and the interior contacts that connect with the Inside coil, and the control loop includes:
Electric current keeps circuit, is serially connected between the operation power and the interior contacts of the breaker, in Inside coil
Electric current is provided in operating process for the Inside coil；
First monitoring circuit, it is in parallel with the detection contact of relay, sensing the movement of detection contact of the relay just
True property；
Second monitoring circuit is serially connected between the operation power and the interior contacts of the breaker, sensing it is described after
The electrical integrity in electrical equipment control circuit.
Further, first monitoring circuit is correct by the movement for acting the detection contact that threshold senses the relay
Property.
Further, second monitoring circuit senses the electrical complete of the relay control circuit by acting threshold
Property.
Further, the breaker includes: breaking coil, the first interior contacts connecting with the breaking coil, closes a floodgate
Coil, the second interior contacts being connect with the closing coil.
Further, first interior contacts and second interior contacts are beaten according to the variation of the circuit breaker position
It opens or is closed, and the state of first interior contacts and second interior contacts is opposite.
Further, electric current holding circuit includes:
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, it includes: contact, the second relay of the first relay of concatenation that first electric current, which keeps sub-loop,
Contact, the coil of third relay and the third in parallel with the contact of first relay, the contact of the second relay after
The contact of electric appliance；
It includes: the contact of the 4th relay of concatenation, the contact of the 5th relay, that second electric current, which keeps sub-loop,
The coil of six relays and sixth relay in parallel with contact, the contact of the 5th relay of the 4th relay connect
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；It is in parallel with the contact of the 4th relay
Third 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, described in one end connection of the first resistor
Operation power, the other end connect the anode of first breakover element, and the cathode of first breakover element is connected to described
Between the contact of one relay and the contact of second relay；
Second photoelectric isolating circuit includes second resistance and the second breakover element, described in one end connection of the second resistance
Between the contact of first relay and the contact of second relay, the other end connects the anode of second breakover element,
The cathode of second breakover element is connected to one end of the coil of the third relay；
Third photoelectric isolating circuit includes 3rd resistor and third breakover element, described in one end connection of the 3rd resistor
Operation power, the other end connect the anode of the third breakover element, and the cathode of the third breakover element is connected to described
Between the contact of four relays and the contact of the 5th relay；
4th photoelectric isolating circuit include the 4th resistance and the 4th breakover element, the 4th resistance one end connection described in
Between the contact of 4th relay and the contact of the 5th relay, the other end connects the anode of the 4th breakover element,
The cathode of 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 that concatenate
In parallel the 5th photoelectric isolating circuit and with the 6th light of the third photoelectric isolating circuit, the parallel connection of the 4th photoelectric isolating circuit that concatenate
Electric isolating circuit,
5th photoelectric isolating circuit includes the 5th resistance and the 5th breakover element, and one end of the 5th resistance connects
The operation power, the other end connect the anode of the 5th breakover element, and the cathode of the 5th breakover element is connected to institute
State the cathode of the second breakover element；
6th photoelectric isolating circuit includes the 6th resistance and the 6th breakover element, and one end of the 6th resistance connects
The operation power, the other end connect the anode of the 6th breakover element, and the cathode of the 6th breakover element is connected to institute
State the cathode of the 4th breakover element.
Further, the breakover element is optocoupler components or similar current sensing.
Further, the breaker has is used to monitor closing coil circuit with what closing coil was directly or indirectly connected
Third interior contacts.
Further, the breaker by the third interior contacts monitor closing coil circuit in the case where, institute
State one end of the third interior contacts of the cathode connection breaker of the 4th breakover element.
The application also provides a kind of control loop with self-checking function, connects the breaker connecting with operation power, institute
The interior contacts that breaker includes Inside coil and connect with the Inside coil are stated, the control loop includes:
Relay circuit is composed in series, relay circuit one by the contact of the first relay and the contact of the second relay
End is connected with operation power, and the other end is connected with the interior contacts that breaker provides.
First monitoring circuit, it is in parallel with relay circuit, sense the relay tip and circuit action correctness and
Electrical integrity.
Further, the breaker has the first interior contacts of driving Inside coil, and the of monitoring Inside coil circuit
Two interior contacts.
Further, when the relay circuit is connected, the relay tip of two concatenations is closed；At relay circuit
When self-test state, at least one is in the open state for the relay tip of two concatenations.
Further, first 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 circuit where second sensing circuit and second relay tip
It is in parallel.
Further, when first relay tip is closed, and second relay tip is opened, the first sensing circuit
The electrical quantity sensed should be less than the first movement threshold value, second sensing circuit senses to electrical quantity to should be greater than second dynamic
Make threshold value；When first relay tip is opened, and second relay tip is closed, the first sensing circuit sense
The electrical quantity measured should be greater than the second movement threshold value, second sensing circuit senses to electrical quantity should be less than the first movement
Threshold value；When the contact of first relay and second relay opens simultaneously, first sensing circuit and
Two sensing circuit senses to electrical quantity should be greater than the first movement threshold value, while should be less than the second movement threshold value.
By above technical scheme as it can be seen that the application is by being serially connected in the interior contacts of the operation power and the breaker
Between control loop and the first monitoring circuit for being attempted by control loop sense the relay detection contact movement
Correctness, the second monitoring circuit sense the electrical integrity of the relay control circuit.Alternatively, passing through the first monitoring circuit sense
Survey the action correctness and 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, and ensure that entire circuit can correctly act when needed, are realized to entire control loop
Repair based on condition of component.
Detailed description of the invention
In order to illustrate the technical solutions in the embodiments of the present application or in the prior art more clearly, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
The some embodiments recorded in application can also be obtained according to these attached drawings other for those of ordinary skill in the art
Attached drawing.
Fig. 1 is a kind of circuit diagram of existing control loop with self-checking function；
Fig. 2 is the circuit diagram of another 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 for the control loop that the application has self-checking function；
Fig. 7 is the circuit diagram for the closing circuit another embodiment that the application has self-checking function.
Specific embodiment
The application keeps circuit by the electric current being serially connected between the operation power and the interior contacts of the breaker
Electric current is provided in internal coil operations for the Inside coil.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.Alternatively, passing through first
Monitoring circuit senses the action correctness and electrical integrity of the detection contact of the relay.Therefore, the application can be right simultaneously
The integrality and correctness of electric loop are monitored, and ensure that entire circuit can correctly act when needed, realization pair
The repair based on condition of component of entire control loop.
Certainly, any technical solution for implementing the application must be not necessarily required to reach simultaneously above all advantages.
In order to make those skilled in the art more fully understand the technical solution in the application, below in conjunction with the embodiment of the present application
In attached drawing, the technical scheme in the embodiment of the application is clearly and completely described, it is clear that described embodiment is only
It is some embodiments of the present application, instead of all the embodiments.Based on the embodiment in the application, ordinary skill people
Member's every other embodiment obtained, shall fall within the protection scope of the present application.
Further illustrate that the application implements below with reference to illustrations.
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 breakers 1, the breaker 1 include Inside coil 11 and the interior contacts 12 connecting with the Inside coil 11.
The control loop 2 includes:
Electric current keeps circuit 21, is serially connected between operation power and the interior contacts 12 of the breaker 1, in Inside coil
It is that the Inside coil 11 provides electric current in 11 operating process.
First monitoring circuit 22, it is 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 breaker 1, senses institute
State the electrical integrity of control loop.
Therefore, the application can simultaneously be monitored the integrality and correctness of electric loop, ensure that entire circuit can
Correct movement when needed, realizes the repair based on condition of component to entire control loop.
Further, referring to Fig. 3, the Inside coil 11 of the breaker 1 includes: breaking coil 111, closing coil 112；Institute
The interior contacts 12 for stating breaker 1 include: the first interior contacts DL1 connecting with the breaking coil 111 and the closing line
Second interior contacts DL2 of 112 connection of circle.
The first interior contacts DL1 and the second interior contacts DL2 is beaten according to the variation of 1 position of breaker
It opens or is closed, and the state of the first interior contacts DL1 and the second interior contacts DL2 are opposite.As DL1 is closed
When, DL2 is open；When such as DL2 closure, DL1 is open.
Specifically, electric current holding circuit 21 includes:
First electric current keeps sub-loop 211, is serially connected between the operation power and the first interior contacts DL1.
Second electric current keeps sub-loop 212, is serially connected between the operation power and the second interior contacts DL2.
It includes: that the contact J1 of the first relay of concatenation, the second relay connect that first electric current, which keeps sub-loop 211,
Point J2, the coil TBJ of third relay and in parallel with the contact J1 of first relay, the contact J2 of the second relay
The contact TBJA, the contact J1 of first relay and the contact J2 of the second relay of third relay are dynamic for what is tripped
Make contact.
It includes: that the contact J3 of the 4th relay of concatenation, the 5th relay connect that second electric current, which keeps sub-loop 212,
Point J4, the coil HBJ of the 6th relay and in parallel with contact J3, the contact J4 of the 5th relay of the 4th relay
The contact HBJA of 6th relay, the contact J3 of the 4th relay and the contact J4 of the 5th relay are dynamic for what is closed a floodgate
Make contact.
First electric current keeps the working principle of sub-loop 211 as follows: referring to Fig. 3, in the first interior contacts DL1
Under the premise of closure, when the contact J1 of first relay and the contact J2 of the second relay are closed at, electric current I2It flows through
The coil TBJ of third relay.After the coil TBJ excitation of third relay, the contact TBJA of third relay is closed, and is just formed
Electric current I1, I1Also the contact TBJA of third relay is flowed through.Even if the contact J1 and the second relay of first relay at this time
The contact J2 of device is opened, I2It is 0, due to I1There is also, so the coil TBJ of third relay still excitation, third relay
Contact TBJA is still within closed state, thus by electric current I1It maintains, provides electric current to 1 breaking coil 111 of breaker,
Here it is the principles that electric current is kept.After breaker 1 trips, the first interior contacts DL1 can be opened, thus electric current I1
It is 0, then the coil TBJ no current of third relay passes through, and without excitation, then the contact TBJA of third relay is opened coil, whole
A tripping process is completed.
Second electric current keeps the working principle of sub-loop 212 similar, no longer repeats here.
First monitoring circuit 22 is correct by the movement for acting the detection contact 13 that threshold senses the relay 1
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 third photoelectric isolating circuit 223 and fourth photoelectricity in parallel with the contact J4 of the 5th relay of the contact J3 parallel connection of device every
From circuit 224.
First photoelectric isolating circuit 221 includes first resistor R1 and the first breakover element OPT1, the first resistor R1's
One end connects the operation power, and the other end connects the anode of the first breakover element OPT1, first breakover element
The cathode of OPT1 is connected between the contact J1 of first relay and the contact J2 of second relay.
Second photoelectric isolating circuit 222 includes second resistance R2 and the second breakover element OPT2, the second resistance R2's
One end connects between the contact J1 of first relay and the contact J2 of second relay, other end connection described second
The cathode of the anode of breakover element OPT2, the second breakover element OPT2 is connected to the breaker 1.
Third photoelectric isolating circuit 223 includes 3rd resistor R3 and third breakover element OPT3, the 3rd resistor R3's
One end connects the operation power, and the other end connects the anode of the third breakover element OPT3, the third breakover element
The cathode of OPT3 is connected between the contact J3 of the 4th relay and the contact J4 of the 5th 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 the contact J4 of the 5th relay, other end connection the described 4th
The cathode of the anode of breakover element OPT4, the 4th breakover element OPT4 is connected to the breaker 1.
Second monitoring circuit 23 senses the electrical integrity of the control loop 2 by acting threshold.
Specifically, second monitoring circuit 23 includes and the first photoelectric isolating circuit 221, the second Phototube Coupling that concatenate
The 5th photoelectric isolating circuit 231 in parallel of circuit 222 and with the third photoelectric isolating circuit 223, the 4th Phototube Coupling electricity that concatenate
The 6th photoelectric isolating circuit 232 in parallel of road 224.
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 anode of the 5th breakover element HWJ, the 5th breakover element
The cathode of HWJ is connected to the cathode of the second breakover element OPT2.
6th photoelectric isolating circuit 232 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 anode of the 6th breakover element TWJ, the 6th breakover element
The cathode of TWJ is connected to the cathode of the 4th breakover element OPT4.
In the concrete realization, the breakover element is optocoupler components or similar current sensing.
Referring to fig. 4, closing coil 122 connects in the breaker 1 the third photoelectric isolating circuit 223, described the
Four photoelectric isolating circuits 224 and the 6th photoelectric isolating circuit 232 are referred to as closing circuit.It is carried out by taking closing circuit as an example
It illustrates how by sensing the control loop action correctness and electrical integrity.
In the breaker 1 breaking coil 111 connect first photoelectric isolating circuit 221, second photoelectricity every
Working principle from circuit 222 and the 5th photoelectric isolating circuit 231 is similar, and the application is not repeated to illustrate.Wherein I3
For the electric current for flowing through the third photoelectric isolating circuit 223, I4For the electric current for flowing through the 4th photoelectric isolating circuit 224, I5For
Flow through the electric current of the 6th photoelectric isolating circuit 232.
When the electric current that photoelectric isolating circuit is flowed through in setting is greater than threshold value, otherwise it is 0 that collected signal, which is 1,.
If the second interior contacts DL2 is closed, the contact J3 of the 4th relay, the contact J4 of the 5th relay are beaten
It opens, operating power voltage U.6th resistance R6Resistance value satisfaction flow through the 6th resistance R6Electric current I5Greater than threshold value Ith1；Third
Resistance R3With the 4th resistance R4Resistance value satisfaction flow through 3rd resistor R4With the 4th resistance R5Electric current I3、I4Less than or equal to threshold value
Ith2 is i.e.:
If the second interior contacts DL2 is closed, the contact J3 closure of the 4th relay, the contact of the 5th relay
J4 is opened, operating power voltage U.4th resistance R4Resistance value satisfaction flow through the 4th resistance R5Electric current I4Greater than Ith2, it may be assumed that
If the second interior contacts DL2 is closed, the contact J4 closure of the 5th relay, the contact of the 4th relay
J3 is opened, operating power voltage U.3rd resistor R3Resistance value satisfaction flow through 3rd resistor R3Electric current I3Greater than Ith, it may be assumed that
3rd resistor R3With the 4th resistance R4Resistance value must simultaneously meet formula 2,3,4.Threshold value Ith1 and threshold value Ith2 can
With equal.
When the second interior contacts DL2 is closed, the contact J3 of the 4th relay, the contact J4 of the 5th relay are beaten
When opening.If control loop and breaker 1 connect normally, at this time I5Threshold value, the shape of the 6th breakover element TWJ back production should be greater than
State is 1, shows that closing circuit electrical connection is normal；If control loop and breaker 1 are electrically connected exception, it will appear I at this time5
Less than threshold value, the case where the 6th breakover element TWJ back production state is 0, thus judge closing circuit electrical connection extremely.
Only when closing circuit is electrically connected in normal situation, to the contact J3 of the 4th relay described in Fig. 4, described
The contact J4 of 5th relay carries out self-test.Self-test logic true value table is as shown in table 1, and wherein TWJ-R, OPT3-R, OPT4-R are
6th breakover element, third breakover element, the 4th breakover element back production signal, electric current be less than or equal to threshold value back production be 0, electric current
It is 1 greater than threshold value back production.J3-W, J4-W are the contact J4 self-test of the contact J3, the 5th relay of the 4th relay
The control command that logic issues, 0 indicates that order contact is opened, and 1 indicates 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-test logic.Set first the contact J3 of the 4th relay, the contact J4 of the 5th relay control command J3-W,
Then J4-W judges whether contact is deposited by back production signal OPT3-R, OPT4-R of third breakover element, the 4th breakover element
In exception.
For example under normal circumstances when the contact J3 of the 4th relay is closed (J3-W 1), the contact J4 of the 5th relay is beaten
(J4-W 0) is opened, at this time electric current I3Very little is certainly less than threshold value (back production signal OPT3-R is 0), electric current I4Greater than threshold value (back production
1) signal OPT4-R is.Work as J3-W=1, when J4-W=0, if back production signal OPT3-R=0, OPT4-R=1, then judges
The contact J3 of four relays is normal.
Other situation decision logics such as table 1.
To prevent closing circuit from malfunctioning, self-test logic does not include the contact J3 of the 4th relay, the 5th relay connects
The case where control command J3-W, J4-W of point J4 is simultaneously 1, as the contact J3 of the 4th relay, the contact J4 of the 5th relay
Control command J3-W, J4-W simultaneously when be 1, show that control loop is acting, exit self-test logic at this time, but to upper
Secondary self-detection result is kept.
In any case, as long as detection abnormal phenomenon, exits contact self-check program completely, prevent subsequent self-test bring control
Malfunction risk in circuit processed, alarm are kept always.
Therefore, the application can simultaneously be monitored the integrality and correctness of electric loop, ensure that entire circuit can
Correct movement when needed, realizes the repair based on condition of component to entire control loop.
Referring to Fig. 6, it is another specific embodiment of the present invention, provides a kind of control loop with self-checking function.It is described
Control loop 2 is serially connected between operation power and breaker 1, control loop 2 be connected, for breaker 1 Inside coil provide it is sharp
Electric current is encouraged, driving breaker 1 acts.
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 breaker 1 include internal separating brake or closing coil and connect with the Inside coil first inside connect
Point, breaker 1 optionally provide the second interior contacts for monitoring.Breaker 1 is provided inside first in embodiment illustrated in fig. 6
Contact DL1.
Specifically, the relay circuit 21 includes:
The contact J2 of the contact J1 of the first relay of concatenation, the second relay.The contact J1 of first relay and
The contact J2 of second relay is the action connection point for tripping.When control loop 2 is in self-test state, two concatenation after
Only one is in closed state or two concatenation contacts all in opening state by electric appliance contact J1, J2, and there is no close simultaneously
The case where conjunction.
The contact J2 of second relay as shown in Figure 6 may go here and there as needed other elements, these belong to the application
The range of protection, specifically such as: sealing in the coil BJ of hard pressing plate Y1, electric current guard relay.
First monitoring circuit 22 senses the contact of first relay and the second relay by acting 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, the first resistor R1's
One end connects the operation power, and the other end connects the anode of the first breakover element OPT1, first breakover element
The cathode of OPT1 is connected between the contact J1 of first relay and the contact J2 of second relay.
Second photoelectric isolating circuit 222 includes second resistance R2 and the second breakover element OPT2, the second resistance R2's
One end connects between the contact J1 of first relay and the contact J2 of second relay, other end connection described second
The cathode of the anode of breakover element OPT2, the second breakover element OPT2 is connected to the breaker 1.
In the concrete realization, the breakover element is optocoupler components or similar current sensing.
When the first relay tip J1, which is closed the second relay tip J2, to be opened, the first photoelectric isolating circuit 221 sensing
To electrical quantity should be less than the first movement threshold value Ith3, the electrical quantity that the second photoelectric isolating circuit 222 senses should be greater than
Two movement threshold value Ith4；When the first relay tip J1 opens the second relay tip J2 closure, the first Phototube Coupling electricity
The electrical quantity that road 221 senses should be greater than the second movement threshold value Ith4, the electrical quantity that the second photoelectric isolating circuit 222 senses
It should be less than the first movement threshold value Ith3；When contact J1, J2 of the first relay and the second relay are opened simultaneously, the first light
The electrical quantity that electric isolating circuit 221 and the second photoelectric isolating circuit 222 sense should be all larger than the first movement threshold value Ith3, together
When should be less than the second movement threshold value Ith4.
If there are two movements for the first photoelectric isolating circuit 221 of the first monitoring circuit 22 and the second photoelectric isolating circuit 222
Threshold, the respectively first movement threshold value Ith3 and the second movement threshold value Ith4, operate between operation power anode and cathode
Voltage is U, and the first, second resistance in the first monitoring circuit 22 is R1 and R2, and R1=R2, threshold value are set under normal circumstances
Method is determined as shown in formula 5,6:
As circuit breaker internal contact DL1 closure, the contact J2 of the contact J1 of first relay, second relay
When opening, the electric current I of resistance R1 is flowed through1With the electric current I for flowing through resistance R22It is equal and meet formula 7, i.e. I1And I2Simultaneously greater than
When Ith3, then the electrical integrity of control loop is correct.
If circuit breaker internal contact DL1 is closed, the contact J1 closure of the first relay, the contact J2 of the second relay is beaten
It opens, operating power voltage U.When flowing through resistance R1Electric current I1Less than Ith3, resistance R is flowed through2Electric current I2When greater than Ith4,
It can determine whether that J1 contact is normal, it may be assumed that
Assuming that circuit breaker internal contact DL1 is closed, the contact J2 closure of second relay, first relay
Contact J1 is opened, operating power voltage U.When flowing through resistance R1Electric current I1Greater than the second movement threshold value Ith4, resistance is flowed through
R2Electric current I2When less than the first movement threshold value Ith3, circuit where can determine whether J2 contact and J2 is normal, it may be assumed that
Contact J1, institute only in the normal situation of control loop electrical integrity, to the first relay described in Fig. 5
The contact J2 for stating the second relay carries out self-test.Self-test logic true value table is as shown in table 2, and wherein OPT1-R, OPT2-R are respectively
The back production signal of first breakover element, the second breakover element, electric current are less than or equal to the second movement threshold value Ith4 back production and are judged to 0,
Electric current is greater than the second movement threshold value Ith4 back production and is judged to 1.J1-W, J2-W are the contact J1 of first relay, described the
The control command that the contact J2 self-test logic of two relays issues, 0 indicates that order contact is opened, and 1 indicates order junction closure.
Table 2
Therefore, the application can simultaneously be monitored the integrality and correctness of electric loop, ensure that entire circuit can
Correct movement when needed, realizes the repair based on condition of component to entire control loop.
Further, referring to Fig. 5 and Fig. 7, for the closing circuit of breaker 1, breaker is realized inside breaker 1
Prevent breaker 1 from jumping back and forth when 1 failure between splitting or integrating, the interface mode between breaker 1 and control loop 2 is not limited to
An interface shown in fig. 6.The closing circuit of Fig. 5 and breaker shown in Fig. 71 provides control input and monitoring input two
Interface, the electric current for being separately connected the application keep circuit/relay circuit 21 and the first monitoring circuit 22 and/or second to monitor back
Road 23.In this case, 1 interior contacts of breaker not only include DL1 and DL2, further include DL3, DL4 and anti-trip relay
Contact FTA, FTB.
Further, as shown in Fig. 5, Fig. 6, Fig. 7, electric current keep circuit/relay circuit 21 and the first monitoring circuit 22 and/
Or second monitoring circuit 23 because anti-bouncing function the different interior contacts for needing to be connected respectively to breaker 1, electric current keep circuit/
Increased element (such as pressing plate Y1, Y2, electric current guard relay coil BJ), does not change the first relay tip in relay circuit
Parallel relationship, the second photoelectricity of the series relationship of J1 and the second relay tip J2 and the first photoelectric isolating circuit 221 and J1
The parallel relationship of isolation circuit 222 and the place J2 circuit, the parallel relationship of the second monitoring circuit and the first monitoring circuit, thus
It belongs to the scope of protection of the present invention.Increase other forms different element or circuit in circuit, still falls within present invention protection model
It encloses.
It will be understood by those skilled in the art that embodiments herein can provide as method, apparatus (equipment) or computer
Program product.Therefore, in terms of the application can be used complete hardware embodiment, complete software embodiment or combine software and hardware
Embodiment form.Moreover, it wherein includes the meter of computer usable program code that the application, which can be used in one or more,
The computer journey implemented in calculation machine usable storage medium (including but not limited to magnetic disk storage, CD-ROM, optical memory etc.)
The form of sequence product.
The application is flow chart of the reference according to method, apparatus (equipment) and computer program product of the embodiment of the present application
And/or block diagram describes.It should be understood that each process in flowchart and/or the block diagram can be realized by computer program instructions
And/or the combination of the process and/or box in box and flowchart and/or the block diagram.It can provide these computer programs to refer to
Enable the processor of general purpose computer, special purpose computer, Embedded Processor or other programmable data processing devices to generate
One machine so that by the instruction that the processor of computer or other programmable data processing devices executes generate for realizing
The device for the function of being specified in one or more flows of the flowchart and/or one or more blocks of the block diagram.
These computer program instructions, which may also be stored in, is able to guide computer or other programmable data processing devices with spy
Determine in the computer-readable memory that mode works, so that it includes referring to that instruction stored in the computer readable memory, which generates,
Enable the manufacture of device, the command device realize in one box of one or more flows of the flowchart and/or block diagram or
The function of being specified in multiple boxes.
These computer program instructions also can be loaded onto a computer or other programmable data processing device, so that counting
Series of operation steps are executed on calculation machine or other programmable devices to generate computer implemented processing, thus in computer or
The instruction executed on other programmable devices is provided for realizing in one or more flows of the flowchart and/or block diagram one
The step of function of being specified in a box or multiple boxes.
Although the preferred embodiment of the application has been described, it is created once a person skilled in the art knows basic
Property concept, then additional changes and modifications may be made to these embodiments.So it includes excellent that the following claims are intended to be interpreted as
It selects embodiment and falls into all change and modification of the application range.Obviously, those skilled in the art can be to the application
Various modification and variations are carried out without departing from spirit and scope.If in this way, these modifications and variations of the application
Belong within the scope of the claim of this application and its equivalent technologies, then the application is also intended to encompass these modification and variations and exists
It is interior.
Claims (11)
1. a kind of control loop with self-checking function, connects the breaker connecting with operation power, the breaker includes interior
Portion's coil and the interior contacts being connect with the Inside coil, which is characterized in that the control loop includes that electric current is kept back
Road, the first monitoring circuit and the second monitoring circuit；
Electric current holding circuit includes:
First electric current keeps sub-loop, and it includes: the contact of the first relay, the second relay that first electric current, which keeps sub-loop,
Contact, the coil of third relay and the contact of third relay；The contact of first relay, the second relay connect
The coil tandem of point and third relay；The contact and the second relay of the contact of the third relay and first relay
The contact of device is in parallel；
First electric current keeps sub-loop to be serially connected between the operation power and the first interior contacts of the breaker,
Electric current is provided in Inside coil operating process for the Inside coil；
Second electric current keeps sub-loop, and it includes: the contact of the 4th relay, the 5th relay that second electric current, which keeps sub-loop,
Contact, the coil of the 6th relay and the contact of the 6th relay；Contact, the 5th relay of 4th relay
Contact and the 6th relay coil tandem；The contact of 6th relay and the contact of the 4th relay and
The contact of 5th relay is in parallel；
Second electric current keeps sub-loop to be serially connected between the operation power and the second interior contacts of the breaker, in inside
Electric current is provided in coil operations for the Inside coil；
First monitoring circuit includes: first photoelectric isolating circuit in parallel with the contact of the first relay, with the second relay
Second photoelectric isolating circuit of the contact parallel connection of device, the third photoelectric isolating circuit in parallel with the contact of the 4th relay, with
4th photoelectric isolating circuit of the contact parallel connection of five relays；
First monitoring circuit is according to the electric current of first to fourth photoelectric isolating circuit compared with respective movement threshold
Compared with comparison result, sense the action correctness of the contact of the relay；
Second monitoring circuit includes: the 5th photoelectric isolating circuit and the 6th photoelectric isolating circuit, the 5th Phototube Coupling
Circuit is in parallel with the series circuit as composed by the first photoelectric isolating circuit and the second photoelectric isolating circuit；6th photoelectricity every
It is in parallel with the series circuit as composed by third photoelectric isolating circuit and the 4th photoelectric isolating circuit from circuit；
Second monitoring circuit is according to the electric current of the 5th photoelectric isolating circuit and the electric current of the 6th photoelectric isolating circuit and respectively
The comparison result that compares of movement threshold, sense the electrical integrity of the control loop.
2. control loop according to claim 1, which is characterized in that the breaker further include: inside described first
The breaking coil of contact connection, the closing coil being connect with second interior contacts.
3. control loop according to claim 2, which is characterized in that connect inside first interior contacts and described second
Point is opened or is closed according to the variation of the circuit breaker position, and first interior contacts and second interior contacts
State be opposite.
4. control loop according to claim 1, which is characterized in that
First photoelectric isolating circuit includes first resistor and the first breakover element, and one end of the first resistor connects the operation
Power supply, the other end connect the anode of first breakover element, the cathode of first breakover element be connected to described first after
Between the contact of electric appliance and the contact of 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 relay and the contact of second relay, the other end connects the anode of second breakover element, described
The cathode of second breakover element is connected to one end of the coil of the third relay；
Third photoelectric isolating circuit includes 3rd resistor and third breakover element, and one end of the 3rd resistor connects the operation
Power supply, the other end connect the anode of the third breakover element, the cathode of the third breakover element be connected to the described 4th after
Between the contact of electric appliance and the contact of 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 relay and the contact of the 5th relay, the other end connects the anode of the 4th breakover element, described
The cathode of 4th breakover element is connected to one end of the coil of the 6th relay.
5. control loop according to claim 4, which is characterized in that
5th photoelectric isolating circuit include the 5th resistance and the 5th breakover element, the 5th resistance one end connection described in
Operation power, the other end connect the anode of the 5th breakover element, and the cathode of the 5th breakover element is connected to described
The cathode of two breakover elements；
6th photoelectric isolating circuit include the 6th resistance and the 6th breakover element, the 6th resistance one end connection described in
Operation power, the other end connect the anode of the 6th breakover element, and the cathode of the 6th breakover element is connected to described
The cathode of four breakover elements.
6. control loop according to claim 5, which is characterized in that the breakover element be optocoupler components or its
His current sensing.
7. a kind of control loop with self-checking function, connects the breaker connecting with operation power, the breaker includes interior
Portion's coil and the interior contacts being connect with the Inside coil, which is characterized in that the control loop includes:
Relay circuit is composed in series by the contact of the first relay and the contact of the second relay, relay circuit one end with
Operation power is connected, and the other end is connected with the interior contacts that breaker provides；
First monitoring circuit includes: the first photoelectric isolating circuit and the second photoelectric isolating circuit, first photoelectric isolating circuit
In parallel with the contact of first relay, second photoelectric isolating circuit is in parallel with the contact of second relay；Institute
The first monitoring circuit is stated to be distinguished according to the electric current of first photoelectric isolating circuit and the electric current of second photoelectric isolating circuit
Comparison result compared with respective movement threshold senses the action correctness in the relay tip and circuit and electrical complete
Whole property.
8. control loop according to claim 7, which is characterized in that the breaker has the first of driving Inside coil
Interior contacts monitor second interior contacts in Inside coil circuit.
9. control loop according to claim 8, which is characterized in that the relay circuit be connected when, two concatenation
Relay tip is closed；When relay circuit is in self-test state, the relay tip of two concatenations is at least one
In opening state.
10. control loop according to claim 9, which is characterized in that first 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 second sensing electricity
Road is in parallel with the circuit where second relay tip.
11. control loop according to claim 10, it is characterised in that: when first relay tip is closed, described the
When two relay tips are opened, the first sensing circuit senses to electrical quantity should be less than the first movement threshold value, second sense
The electrical quantity that slowdown monitoring circuit senses should be greater than the second movement threshold value；When first relay tip open, described second after
When electric appliance junction closure, first sensing circuit senses to electrical quantity should be greater than the second movement threshold value, second sense
The electrical quantity that slowdown monitoring circuit senses should be less than the first movement threshold value；When connecing for first relay and second relay
Point is when opening simultaneously, first sensing circuit and the second sensing circuit senses to electrical quantity should be greater than the first movement threshold
Value, while should be less than the second movement threshold value.
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 CN106505739A (en) | 2017-03-15 |
| CN106505739B true CN106505739B (en) | 2019-06-14 |
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| CN201610035618.0A Pending CN105656201A (en) | 2016-01-19 | 2016-01-19 | Control loop having self-detection function |
| CN201611113443.7A Active CN106505739B (en) | 2016-01-19 | 2016-12-06 | A kind of control loop with self-checking function |
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| CN106872930B (en) * | 2017-04-05 | 2021-07-23 | 中国电力科学研究院 | Loop on-off self-detection device and method of electric energy meter field detection equipment |
| 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 |
| 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 |
| CN111273197B (en) * | 2020-04-01 | 2022-09-20 | 福建龙净脱硫脱硝工程有限公司 | Electrical equipment testing method and device |
| 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 |
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| JP4155190B2 (en) * | 2003-12-25 | 2008-09-24 | 富士通株式会社 | Uninterruptible power supply, power supply control program, power supply control program recording medium, and power supply control method |
| JP5444992B2 (en) * | 2009-09-24 | 2014-03-19 | 株式会社ジェイテクト | Electric power steering device |
| CN102315621B (en) * | 2010-07-06 | 2015-05-20 | 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 |
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| CN105656201A (en) | 2016-06-08 |
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