CN101944771B - Secondary loop panoramic state monitoring system for electric operating mechanism of circuit breaker - Google Patents
Secondary loop panoramic state monitoring system for electric operating mechanism of circuit breaker Download PDFInfo
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Abstract
The invention discloses a secondary loop panoramic state monitoring system for an operating mechanism of a circuit breaker in the technical field of power systems. The system comprises a communication module, a control module, a sensor module, a switch-on processing module and a trip processing module. The system can perform on-line monitoring per se on the integrity of an operating loop, a monitoring loop and loop elements in various working states of the circuit breaker such as switch-off, switch-on and the like, realizes state monitoring of trip and switch-on loops in a full state, and has active defense function. Compared with the prior art, the system simplifies the tripping and closing operation loops, improves the integral reliability of the system, provides necessary conditions for state overhauling of the intelligent circuit breaker, ensures safe operation of the high-voltage circuit breaker, and improves the power supply reliability of the power system.
Description
Technical field
What the present invention relates to is a kind of device of technical field of power systems, specifically is a kind of secondary circuit panorama condition monitoring system that is used for the electric operating mechanism of circuit breaker.
Background technology
Along with economic development, social progress, science and technology and the level of IT application improve constantly and the becoming increasingly conspicuous of global resources and environmental problem, power network development faces new problem and new challenge.Rely on present information, communication and control technology, the develop actively intelligent grid adapts to the requirement of following sustainable development, has become the Real Choice of International Power development.Important support as the intelligent grid construction; Have that networking is controlled, the intelligent primary equipment of digitized measurement and status monitoring characteristic; For the safe and stable operation of electric power system has been established material base, for operation, the scheduling of optimizing electrical network provides sufficient data and regulating measure.
Primary cut-out is the important electric equipment in power plant, the electric substation's primary system, and it is used for cutting off and connecting load circuit, and the disengagement failure circuit, and the accident that prevents enlarges, and guarantees safe operation.The electric secondary operation circuit is the circuit that electric primary equipment is controled, and is an important component part of relaying protection.Existing Intelligentized method is used the pattern of " intelligent assembly+primary equipment " often, adopts the mode of GOOSE breaker tripping and closing order to realize that networking controls, and often only accomplishes the breaker tripping and closing outlet or only intelligent assembly control box home loop is done monitoring for the monitoring in electric operation loop; Can not intactly monitor operation circuit, make status monitoring have very big blind spot, simultaneously; Because the loop can't the fault location point; Can not report to the police targetedly, more can not realize initiatively defence, isolated fault; Avoid fault to enlarge and cause the accident, this obviously can not satisfy the requirement of smart machine.
Closing loop abnormal conditions such as contact adhesion, tripping or pressing plate come off, control line is aging might occur owing to long-play or other reason.The timely diagnosis of this abnormal conditions can effectively prevent the circuit breaker tripping, guarantees the unimpeded of protection breaker tripping and closing passage, solves the loss that the circuit breaker loop problem is brought, and is very important for the safety of transformer station and even electrical network.This just requires that a kind of breaker operating device can be arranged, and can possess the panorama status monitoring function of relaying protection control loop, breaker signal relay circuit, operation circuit and monitoring circuit self.Yet, it is reported domestic intelligent terminal at present, generally do not possess the ability of the total state monitoring of closing loop.
Through the retrieval of prior art is found: in June, 2009 Nanrui Jibao Electric Co., Ltd " technology and the operation instructions " of PCS-222B intelligent operation box in intelligent microcomputer type control box and its implementation of a kind of complete function are disclosed; This PCS-222B intelligent operation box has been realized functions such as circuit breaker Stateful Inspection, control loop inspection, circuit breaker breaker tripping and closing operation, supports the GOOSE message.But this prior art is just kept watch on and has been inserted the optocoupler transducer traditional jumping position being kept watch on, closed the position, sensor loop is not monitored, and does not also have monitoring breaker signal circuit, conventional relay protection circuit; This prior art does not possess intactly monitors the secondary operation loop, makes status monitoring have very big blind spot, simultaneously; Because the loop can't the fault location point; Can not report to the police targetedly, more can not realize initiatively defence, isolated fault.
Further retrieval is found; Chinese patent document number CN 101764432A; Open day 2010-6-30 has put down in writing a kind of " intelligent operation box with action connection point self-checking function ", and this technology has realized functions such as circuit breaker Stateful Inspection, control loop inspection, circuit breaker breaker tripping and closing operation; The self checking method of digitlization operation contact also is provided, has also supported the GOOSE message.But this prior art is only in the operation circuit, and the sticking dead phenomenon of the relay tip that damage probability is very little has been carried out real-time monitoring, in this realizes; Also introduced monitoring circuit; This technology does not possess the ability of intactly monitoring operation circuit equally, more can not realize initiatively defence, isolated fault.
In sum; Above-mentioned prior art has only been carried out partly monitoring to the breaker operator loop, and when realizing the loop monitoring, has introduced new monitoring circuit; Have direct between these monitoring circuits and operating power, the operation circuit and close association; The device failure of monitoring circuit self causes opens circuit, short circuit, certainly will influence the safety in whole secondary operation loop, introduces new fault point.If these loops are not monitored, then can't guarantee the safety of secondary circuit.
Summary of the invention
The present invention is directed to the above-mentioned deficiency that prior art exists; A kind of secondary circuit panorama condition monitoring system that is used for the electric operating mechanism of circuit breaker is provided; Can be at the circuit breaker branch, close etc. under the various operating states; Operation circuit, monitoring circuit and loop element integrality are carried out self-on-line monitoring, realize under the complete state status monitoring, and have initiatively defense function closing loop.Compared with prior art simplified the breaker tripping and closing operation circuit, improved the global reliability of system,, guaranteed the safe operation of primary cut-out, improved the reliability of power system power supply for the repair based on condition of component of realizing intelligent breaker provides necessary condition.
The present invention realizes through following technical scheme; The present invention includes: communication module, control module, sensor assembly, combined floodgate processing module and tripping operation processing module; Wherein: control module links to each other with communication module and realizes that the process layer network with circuit breaker operation mechanism exchanges control command and monitoring information; Control module links to each other with sensor assembly with the accepting state monitoring information; Sensor assembly links to each other with the tripping operation processing module with the combined floodgate processing module respectively and receives operation circuit state information and monitoring circuit state information, and the combined floodgate processing module is connected with control module respectively with the tripping operation processing module and receives control command and carry out breaker tripping and closing control.
Described communication module comprises: optical fiber communication interface, relaying protection control relay interface and breaker signal relay circuit; Wherein: the two ends of optical fiber communication interface are connected with control module with the process layer network respectively and the GOOSE message information of light signal are converted into control command information; The two ends of relaying protection control relay interface are connected with sensor assembly with the wall of circuit breaker operation mechanism respectively and the control information of relay tip are converted into required monitoring information of control module and control command, and the breaker signal relay circuit is connected with sensor assembly and transmits the monitoring information in breaker signal loop.
Described control module comprises: signal gathering unit, ALU and control unit; Wherein: signal gathering unit be connected with sensor assembly and optical fiber communication module and GOOSE information decoding that state information is sent here through anti-interference process, with the optical fiber communication module and the control command that extracts displacement after be transferred to ALU; ALU is with the logic operation result output control unit, and control unit exports combined floodgate processing module, tripping operation processing module and communication module respectively to after logic operation result is compiled.
Described sensor assembly comprises: signal circuit transducer, control loop transducer and monitoring circuit transducer.
Apparatus of the present invention provide the secondary circuit panorama state monitoring method of control loop, breaker signal loop, breaker operator loop and monitoring circuit self; Under the important prerequisite that does not change the trip(ping) circuit reliability; Increased secondary circuit panorama status monitoring function; Simplified the design of operation circuit again widely, improved the global reliability of system, for " repair based on condition of component " of realizing the protection relay loop provides necessary condition; Guarantee the safe operation of protective device, improved the reliability of power system power supply.
Description of drawings
Fig. 1 is a structure chart of the present invention.
Fig. 2 is a combined floodgate processing module structural representation.
Fig. 3 is tripping operation processing module structural representation.
Fig. 4 is the control module structural representation.
Fig. 5 is the optical fiber communication block diagram of communication module.
Fig. 6 is the relaying protection control relay loop block diagram of communication module.
Fig. 7 is the breaker signal circuit theory figure of communication module.
Embodiment
Elaborate in the face of embodiments of the invention down, present embodiment provided detailed execution mode and concrete operating process, but protection scope of the present invention is not limited to following embodiment being to implement under the prerequisite with technical scheme of the present invention.
As shown in Figure 1; This instance comprises: communication module, control module, sensor assembly, combined floodgate processing module and tripping operation processing module; Wherein: control module links to each other with communication module and realizes that the process layer network with circuit breaker operation mechanism exchanges control command and monitoring information; Control module links to each other with sensor assembly with the accepting state monitoring information; Sensor assembly links to each other with the tripping operation processing module with the combined floodgate processing module respectively and receives operation circuit state information and monitoring circuit state information, and the combined floodgate processing module is connected with control module respectively with the tripping operation processing module and receives control command and carry out breaker tripping and closing control.
Like Fig. 1, Fig. 5 and shown in Figure 7; Described communication module comprises: optical fiber communication interface, relaying protection control relay interface and breaker signal relay circuit; Wherein: the two ends of optical fiber communication interface are connected with control module with the process layer network respectively and the GOOSE message information of light signal are converted into control command information; The two ends of relaying protection control relay interface are connected with sensor assembly with the wall of circuit breaker operation mechanism respectively and the control information of relay tip are converted into required monitoring information of control module and control command, and the breaker signal relay circuit is connected with sensor assembly and transmits the monitoring information in breaker signal loop.
Described breaker signal relay circuit is meant: tripping operation pressure switch YJ1, reclosing pressure switch YJ2, closing pressure relay YJ3, operating pressure relay YJ4, circuit breaker position auxiliary switch relay TWK, HWK.
As shown in Figure 2; Described combined floodgate processing module comprises: successively first of series connection close a floodgate control contact HZCK1, second close a floodgate control contact HZCK2, switching current latching relay HBJ, the first pressing plate LTPh and overtime relay CSJ1 and with first close a floodgate that control contact HZCK1 and second closes a floodgate that control contact HZCK2 is in parallel first detect diode D1 and combined floodgate latching relay contact K-HBJ; Wherein: switching current latching relay HBJ is used for the self-sustaining of closing operation; Combined floodgate latching relay contact K-HBJ links to each other with combined floodgate latching relay actuation coil TBJ with the control power supply respectively, breaks off closing circuit when the first pressing plate LTPh is used to overhaul.
As shown in Figure 3; Described tripping operation processing module comprises: successively the first tripping operation control point TZCK1, the second tripping operation control point TZCK2 and tripping current latching relay TBJ, the second pressing plate LTPt and the overtime relay CSJ2 of series connection, second detect diode D2 and tripping operation latching relay contact K-TBJ and the numeral that is connected with the first tripping operation control point TZCK1 monitor that trips with the first tripping operation control point TZCK1 and the second tripping operation control point TZCK2 are in parallel; Wherein: tripping current latching relay TBJ is used for the self-sustaining of trip operation, breaks off trip(ping) circuit when the second pressing plate LTPt is used to overhaul.
Described numeral tripping operation monitor comprises: the tripping operation control command relay TJA that is connected in series, the 3rd pressing plate LTPb and the 3rd detect diode D3 and are connected in tripping operation control command relay TJA and two control relay SMT that are connected in series at the 3rd detection diode D3 two ends.
As shown in Figure 4; Described control module comprises: signal gathering unit, ALU and control unit; Wherein: signal gathering unit be connected with sensor assembly and optical fiber communication module and GOOSE information decoding that state information is sent here through anti-interference process, with the optical fiber communication module and the control command that extracts displacement after be transferred to ALU; ALU is with the logic operation result output control unit, and control unit exports combined floodgate processing module, tripping operation processing module and communication module respectively to after logic operation result is compiled.
Described sensor assembly comprises: breaker signal loop transducer, control loop transducer and monitoring circuit transducer,
As shown in Figures 2 and 3, described monitoring circuit transducer comprises: be arranged at the first tripping operation control point TZCK1 third state transducer IN3, be arranged at combined floodgate latching relay contact K-HBJ the second state sensor IN2, be arranged at the first state sensor IN1 of overtime relay CSJ1; And
Be arranged at the 4th, the 7th and the 8th state sensor IN4, the IN7 and the IN8 of numeral tripping operation monitor, the 5th state sensor IN5 that is arranged at tripping operation latching relay contact K-TBJ and the 6th state sensor IN6 that is arranged at overtime relay CSJ2.
As shown in Figure 6; Described control loop transducer places the relaying protection relay order loop of communication module; Comprise: the tenth four condition transducer IN14 that links to each other with the order relay tip HZJ that closes a floodgate, the 15 state sensor IN15 that is connected with reclosing order relay tip CHZJ, and the 16, the 17, the 18 and the 19 state sensor IN16, IN7, IN18, the IN19 that are connected with transmission relay tip CDJ1, CDJ2, CDJ3, CDJ4 respectively;
As shown in Figure 7, described signal circuit transducer comprises: be arranged at the 9th state sensor IN9 of first to fourth breaker signal relay YJ1, YJ2, YJ3, YJ4 and be arranged at the tenth and the 11 state sensor IN10, the IN11 of the first and second circuit breaker position auxiliary switch relay TWK and HWK.
When the sampled value of state sensor is " 1 ", represent that this loop has electric current to pass through, promptly the loop connection state is intact.
When the sampled value of state sensor is " 0 ", represent that this loop no current passes through, promptly there is open circuit situation in the loop.
Native system carries out work in the following manner:
The status monitoring of the first step, control loop
1.1 when circuit breaker was in the jumping position, before manual or remote control was closed a floodgate, order was preset in transmission earlier, the optical fiber communication interface in the communication module closes a floodgate through the decoding acquisition and presets order.
1.2 the collecting unit in the control module extracts the state that closes a floodgate and preset the order displacement, enable; Order is input to ALU; ALU is through the state of state sensor IN10 and IN11; Judge current circuit breaker position: if the sampled value of IN10 is " 1 "; And the sampled value of IN11 is " 0 ", and the expression circuit breaker position is in jumps the position, and ALU is through control unit drive protecting tripping operation transmission relay CDJ1, CDJ2 output protection tripping operation transmission order with through relay CDJ3, CDJ4 inspecting state.Otherwise, the exit status observation process, and provide the warning information that circuit breaker position is not inconsistent, the application maintenance.
After 1.3 the protective relaying device device is received protection tripping operation transmission order and inspecting state, drive protecting trip signal TJA action of relay contact.
1.4 the state attitude transducer IN7 monitoring and protecting contact action message of sensor assembly, and sampled value sent to the signal gathering unit of control module.If the sampled value of IN7 is " 1 ", it is intact to show that protection trip signal relay TJA loop connects, otherwise expression TJA does not connect to the outside between the pressing plate LTPb and is communicated with.
1.5 the ALU in the control module is judged from the transmission order to be issued to the time of receiving (order of protection tripping relay) the contact action message that transmits in the protection relay loop, promptly is issued to the time of IN7 sampled value for " 1 " from the transmission order; If surpass 0.5s (can adjust), then provide the warning information of current control loop broken string, and locking is closed a floodgate; Regain the transmission relay; And withdraw from the status monitoring of control loop immediately, provide warning information, the application maintenance.Otherwise it is intact to show that the current detection loop connects, and regains current transmission relay.
1.6 when circuit breaker is in when closing, CPU drives CSJ1, CSJ2 relay, opens the breaker tripping and closing control loop; At this moment the detected state sensor sampled value of IN1 among Fig. 2 and the IN6 among Fig. 3 all is " 0 " (relation " with "); Show that the breaker tripping and closing operation circuit is all broken off by the CSJ1/CSJ2 contact, the command action of any start-up operation of this moment can not cause the breaker tripping and closing misoperation of circuit breaker, otherwise withdraws from the status monitoring of control loop immediately; Provide warning information, the application maintenance.
1.7 ALU is through control unit drive protecting tripping operation transmission relay CDJ1, CDJ2 output protection tripping operation transmission order and pass through relay CDJ3, CDJ4 inspecting state.
1.8 the state attitude transducer IN7 monitoring and protecting contact action message of sensor assembly, and sampled value sent to the signal gathering unit of control module.If the sampled value of IN7 is " 1 ", it is intact to show that protection trip signal relay TJA loop connects, otherwise expression TJA does not connect to the outside between the pressing plate LTPb and is communicated with.
1.9 the ALU in the control module is judged from the transmission order to be issued to the time of receiving (order of protection tripping relay) the contact action message that transmits in the protection relay loop, promptly is issued to the time of IN7 sampled value for " 1 " from the transmission order; If surpass 0.5s (can adjust), then provide the warning information of current control loop broken string, and locking is closed a floodgate; Regain the transmission relay; And withdraw from the status monitoring of control loop immediately, provide warning information, the application maintenance.Otherwise it is intact to show that the current detection loop connects, and regains current transmission relay.
1.10 same quadrat method detects HZJ, CHZJ relay circuit.
The status monitoring in second step, breaker signal loop.
2.1 the sampled value of control module reading state transducer IN9 if the sampled value of transducer is " 1 ", shows that then current pressure is unusual, withdraws from detection, otherwise continues.
2.2 control module drives the low detection relay J CJ1 action of forbidding tripping relay YJ1 of pressure in the breaker signal loop.Circuit design logic shown in Figure 7 has guaranteed when detecting relay (JCJ1) action the pressure extended relay on this road (1YYJ1,1YJJ2) displacement action.If the current pressure relay is normal, the then pressure extended actuating of relay (1YYJ1,1YJJ2), after the detection actuating of relay, the pressure extended relay is regained.Otherwise, if pressure switch action, then detect the actuating of relay after, the state of pressure extended relay becomes operate condition by retracted state.
2.3 sensor assembly (IN9) sends breaker signal action of relay contact information to control module.
2.4 the ALU in the control module judges from detecting relay (JCJ1) to be issued to the information of receiving the displacement of pressure extended relay tip that promptly the IN9 sampled value becomes the time of " 1 " from " 0 "; If surpass 0.5s (can adjust); Then provide the warning information of current breaker signal circuit breaking, and locking breaker tripping and closing command signal, regain and detect relay; And withdraw from the status monitoring in breaker signal loop, application maintenance immediately.Otherwise it is intact to show that the current detection loop connects, and regains the current detection relay.
2.5 same method detects YJ2, YJ3, YJ4.
The status monitoring of the 3rd step, breaker operator loop and monitoring circuit self
3.1 the control module inspection is from the auxiliary switch for circuit breaker (TWK of breaker signal contact; HWK) status signal IN10 and the sampled value of IN11 are jumped position (the IN10 state is " 1 ") if current circuit breaker position is in, if this moment, the IN11 state was " 0 "; Then get into step 3.2; Otherwise provide position signalling loop abnormality alarming signal warning information, and withdraw from the status monitoring in breaker signal loop immediately, the application maintenance is handled; Otherwise please change step 3.6.
3.2 control module is judged closing circuit supervisory signal (sampled value of IN1) and trip(ping) circuit supervisory signal (sampled value of IN6) that current sensor assembly is sent here.If this moment, the state of IN1 was to break off (being " 0 "), then to send closing operation loop abnormality alarming signal, and withdraw from the status monitoring in breaker signal loop immediately, the application maintenance is handled.If perhaps IN6 is 1, then to send closing operation circuit breaking alarm signal, and withdraw from the status monitoring in breaker signal loop immediately, the application maintenance is handled.Otherwise continue.
3.3 control module drives the overtime relay CSJ1 of closing circuit and opens, and prevents that circuit breaker from closing by mistake.Drive combined floodgate control relay 1 (HZCK1) action, combined floodgate control relay 2 (HZCK2) is failure to actuate.The state of the HZCK1 of sensor assembly acquisition at this moment contact action becomes " 1 " by " 0 ", shows that combined floodgate control relay 1 element function is intact.Otherwise send the HZCK1 fault warning of breaker switching-on operation loop, and detection of end, wait pending.
3.4 control module drives HZCK1 and returns, and drives the HZCK2 action, at this moment have Weak current through TWJ, pressing plate, HBJ, flow through the HZCK2 contact; The state that sensor assembly obtains the action of HZCK2 contact becomes " 1 " by " 0 "; Show that combined floodgate control relay 2 element function are intact, and closing circuit is intact, if the state that switching current maintenance this moment sensor monitors arrives is by " 0 " change " 1 "; Show that then the diode in the loop is breakdown; Send the fault warning of breaker closing monitoring circuit, and detection of end, wait pending.Otherwise send the alarm of breaker switching-on operation loop fault, and detection of end, wait pending.
3.5 because current being in jumped the position, the malfunction phenomenon can not take place by the natural disconnection of auxiliary switch for circuit breaker in the trip operation loop.Its course of action repeats no more at this with 3.2～3.4.
3.6 the control module inspection is opened into signal (IN10 from the auxiliary switch for circuit breaker of breaker signal contact; IN11), if being in, current circuit breaker position closes position (the IN11 state is " 1 "), if this moment, the IN10 state was " 0 "; Then get into step 3.7; Otherwise send position signalling loop abnormality alarming signal, and detection of end, wait pending; Otherwise please change step 3.1.
3.7 control module is judged closing circuit supervisory signal and trip(ping) circuit supervisory signal that current sensor assembly is sent here, promptly jumps the position and keeps watch on (IN10) and close position supervision (IN11) state.If this moment, the state of IN11 was to break off (being " 0 "), then send closing operation loop abnormality alarming signal, and detection of end, wait pending.If perhaps IN10 is " 1 ", then send closing operation circuit breaking alarm signal.Otherwise continue.
3.8 because current being in closed the position, the malfunction phenomenon can not take place by the natural disconnection of auxiliary switch for circuit breaker in the closing operation loop.Its course of action repeats no more at this with 3.2～3.4.Like this, no matter switch is to jump the position or closing the position, can both cross combined floodgate operation circuit and monitoring circuit self are monitored.
3.9 control module drives the TZCK1 actuating of relay, the TZCK2 relay is regained, if the state of the TZCK1 of sensor assembly acquisition at this moment contact action becomes " 1 " by " 0 ", shows that tripping operation control relay 1 element function is intact.Otherwise send circuit breaker trip operation circuit TZCK1 fault warning, and detection of end, wait pending.
3.10 because current being in closed the position, the conducting of trip operation loop, unaffected for the ready state that guarantees trip(ping) circuit, this programme does not come the detecting operation loop through the mode of breaking off trip(ping) circuit, but adopts the control relay loop to come the conversion monitoring state.Control module control control relay (SMT) action, the TZCK2 actuating of relay, the TZCK1 relay is regained; If the state of the TZCK2 of sensor assembly acquisition at this moment contact action becomes " 1 " by " 0 "; Show that element function such as tripping operation control relay TZCK2, TBJ, pressing plate are intact, it is normal that the loop connects, if the state that tripping current maintenance this moment sensor monitors arrives is by " 0 " change " 1 "; Show that then the diode in the loop is breakdown; Send the fault warning of circuit breaker trip monitoring circuit, and detection of end, wait pending.Otherwise send the fault warning of circuit breaker trip operation circuit, and detection of end, wait pending.
So far, accomplish the Overall Steps of a panorama status monitoring
Like this, no matter switch is to jump the position or closing the position, can both cross control loop, breaker signal loop, breaker tripping and closing operation circuit and monitoring circuit self are monitored.Realized the panorama status monitoring of secondary circuit.
This device provides the secondary circuit panorama state monitoring method of control loop, breaker signal loop, breaker operator loop and monitoring circuit self; Under the important prerequisite that does not change the trip(ping) circuit reliability; Increased secondary circuit panorama status monitoring function; Simplified the design of operation circuit again widely, improved the global reliability of system, for " repair based on condition of component " of realizing the protection relay loop provides necessary condition; Guarantee the safe operation of protective device, improved the reliability of power system power supply.
Claims (6)
1. secondary circuit panorama condition monitoring system that is used for circuit breaker operation mechanism; It is characterized in that; Comprise: communication module, control module, sensor assembly, combined floodgate processing module and tripping operation processing module; Wherein: control module links to each other with communication module and realizes that the process layer network with circuit breaker operation mechanism exchanges control command and monitoring information; Control module links to each other with sensor assembly with the accepting state monitoring information; Sensor assembly links to each other with the tripping operation processing module with the combined floodgate processing module respectively and receives operation circuit state information and monitoring circuit state information, and the combined floodgate processing module is connected with control module respectively with the tripping operation processing module and receives control command and carry out breaker tripping and closing control;
Described combined floodgate processing module comprises: first of series connection close a floodgate control contact (HZCK1), second close a floodgate control contact (HZCK2), switching current latching relay (HBJ), first pressing plate (LTPh) and the overtime relay (CSJ1) and close a floodgate and control first detection diode (D1) and the combined floodgate latching relay contact (K-HBJ) that contact (HZCK2) is in parallel with the first control contact (HZCK1) and second that closes a floodgate successively; Wherein: switching current latching relay (HBJ) is used for the self-sustaining of closing operation; Combined floodgate latching relay contact (K-HBJ) links to each other with combined floodgate latching relay actuation coil (TBJ) with the control power supply respectively, and first pressing plate (LTPh) breaks off closing circuit when being used to overhaul.
2. the secondary circuit panorama condition monitoring system that is used for circuit breaker operation mechanism according to claim 1; It is characterized in that; Described communication module comprises: optical fiber communication interface, relaying protection control relay interface and breaker signal relay circuit; Wherein: the two ends of optical fiber communication interface are connected with control module with the process layer network respectively and the GOOSE message information of light signal are converted into control command information; The two ends of relaying protection control relay interface are connected with sensor assembly with the wall of circuit breaker operation mechanism respectively and the control information of relay tip are converted into required monitoring information of control module and control command, and the breaker signal relay circuit is connected with sensor assembly and transmits the monitoring information in breaker signal loop.
3. the secondary circuit panorama condition monitoring system that is used for circuit breaker operation mechanism according to claim 1; It is characterized in that; Described tripping operation processing module comprises: the first tripping operation control point (TZCK1), the second tripping operation control point (TZCK2) and tripping current latching relay (TBJ), second pressing plate (LTPt) and the overtime relay (CSJ2) of series connection, the second detection diode (D2) that is in parallel with the first tripping operation control point (TZCK1) and the second tripping operation control point (TZCK2) and trip latching relay contact (K-TBJ) and the numeral that is connected with the first tripping operation control point (TZCK1) monitor that trips successively; Wherein: tripping current latching relay (TBJ) is used for the self-sustaining of trip operation, and second pressing plate (LTPt) breaks off trip(ping) circuit when being used to overhaul.
4. the secondary circuit panorama condition monitoring system that is used for circuit breaker operation mechanism according to claim 3; It is characterized in that described numeral tripping operation monitor comprises: the tripping operation control command relay (TJA) that is connected in series, the 3rd pressing plate (LTPb) and the 3rd detect diode (D3) and are connected in tripping operation control command relay (TJA) and two control relays (SMT) that are connected in series at the 3rd detection diode (D3) two ends.
5. the secondary circuit panorama condition monitoring system that is used for circuit breaker operation mechanism according to claim 1; It is characterized in that; Described control module comprises: signal gathering unit, ALU and control unit; Wherein: signal gathering unit be connected with sensor assembly and communication module and GOOSE information decoding that state information is sent here through anti-interference process, with communication module and the control command that extracts displacement after be transferred to ALU; ALU is exported to control unit with logic operation result, and control unit exports combined floodgate processing module, tripping operation processing module and communication module respectively to after logic operation result is compiled.
6. the secondary circuit panorama condition monitoring system that is used for circuit breaker operation mechanism according to claim 1 is characterized in that described sensor assembly comprises: signal circuit transducer, control loop transducer and monitoring circuit transducer.
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| Publication number | Priority date | Publication date | Assignee | Title |
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