CN201829937U - Fiber-locking override-trip preventive system - Google Patents
Fiber-locking override-trip preventive system Download PDFInfo
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- CN201829937U CN201829937U CN2010205835688U CN201020583568U CN201829937U CN 201829937 U CN201829937 U CN 201829937U CN 2010205835688 U CN2010205835688 U CN 2010205835688U CN 201020583568 U CN201020583568 U CN 201020583568U CN 201829937 U CN201829937 U CN 201829937U
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- 238000004891 communication Methods 0.000 claims abstract description 12
- 239000013307 optical fiber Substances 0.000 claims description 23
- 230000001681 protective effect Effects 0.000 claims description 18
- 230000006870 function Effects 0.000 claims description 11
- 230000000903 blocking effect Effects 0.000 claims description 5
- 230000005622 photoelectricity Effects 0.000 claims description 4
- 238000009413 insulation Methods 0.000 claims description 2
- 238000003672 processing method Methods 0.000 abstract description 2
- 230000002265 prevention Effects 0.000 abstract 2
- 230000003287 optical effect Effects 0.000 abstract 1
- 238000013461 design Methods 0.000 description 6
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- 238000012544 monitoring process Methods 0.000 description 3
- 238000012545 processing Methods 0.000 description 3
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S10/00—Systems supporting electrical power generation, transmission or distribution
- Y04S10/20—Systems supporting electrical power generation, transmission or distribution using protection elements, arrangements or systems
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S40/00—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them
- Y04S40/12—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them characterised by data transport means between the monitoring, controlling or managing units and monitored, controlled or operated electrical equipment
- Y04S40/124—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them characterised by data transport means between the monitoring, controlling or managing units and monitored, controlled or operated electrical equipment using wired telecommunication networks or data transmission busses
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S40/00—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them
- Y04S40/12—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them characterised by data transport means between the monitoring, controlling or managing units and monitored, controlled or operated electrical equipment
- Y04S40/126—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them characterised by data transport means between the monitoring, controlling or managing units and monitored, controlled or operated electrical equipment using wireless data transmission
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- Remote Monitoring And Control Of Power-Distribution Networks (AREA)
Abstract
The utility model discloses a fiber-locking override prevention system and a locking signal processing method for realizing the function of preventing override trip. The system comprises two devices: a micro-computer comprehensive protection device PA61 with the function of preventing override trip, and an override-preventing fiber concentrator SU20; optical locking signals are adopted between the micro-computer comprehensive protection devices and between the micro-computer comprehensive protection device and the override-preventing fiber concentrator so as to carry out connection locking; the signal state comprises a normal working state and a time-relay locking state of 1 to 10 stages; the signal state is distinguished according to different frequencies of the signal; the frequency of the signal is generated by an FPGA (field programmable gate array); and when the FPGA carries out communication with a DSP (Digital Signal Processor), the FPGA outputs the locking signal of different widths to the DSP. The system can realize the aim of preventing override trip of an upper stage of power supply system and a lower stage of a power supply system, and can also realize the override-trip prevention in a way of uniformly sending the locking signal by adopting multi-point concentration.
Description
Technical field
The present invention is a kind of anti-overstep tripping system.In multistage electric power system, the characteristics especially short at the underground power supply system power supply distance, that guard interval is little, operational mode is changeable are utilized the optical fiber block signal, and effective current protection locking is carried out on the entire section line road, prevent overstep tripping.
Background technology
At present; at preventing overstep tripping on the ground; most protective relaying devices are to utilize optical-fiber longitudinal difference protection to realize; and at the down-hole anti-overstep tripping; the microcomputer protecting device that itself has an anti-function of bypassing the immediate leadership seldom, and protective device is to cooperate by pilot wire relays and bus differential protecting to realize anti-overstep tripping basically.Because electric power system is not the system of a static state, its operational mode is to change, and the priority level of each protection platform in electrical network also can change under different operational modes.If just fixing interconnector is carried out unidirectional simply one to one locking, after operational mode changed, the change of the inlet wire circuit of subordinate's circuit if do not change the locking setting, just can not effectively prevent overstep tripping; The intelligent monitoring terminal that has adopts the mode of software arrangements, the ground monitoring platform can deploy switch priority, but as long as the circuit operational mode changes, just must reset priority to inductive switch, operate quite loaded down with trivial details.
Summary of the invention
At the deficiencies in the prior art; in order thoroughly to solve overstep tripping, the invention provides a unjacketed optical fiber locking anti-overstep tripping system, comprise two kinds of devices; a kind of is the computer integrated protection of band anti-overstep tripping function, and another kind is the anti-fibre concentrator of bypassing the immediate leadership.
The technical solution adopted for the present invention to solve the technical problems is: a kind of is the computer integrated protection measure and control device of band anti-overstep tripping function, model is PA61, comprise master control borad, power panel, display module, Infrared remote controller, it is characterized in that: the outside amount of opening input terminal, relay output end, RS485/CAN communication terminal, insulation resistance monitor input terminal and optical fiber locking input and output terminal all are integrated on the master control borad; External analog amount input terminal links to each other with master control borad by power panel; Display module links to each other with master control borad by communication cable; The outside is opened into control button and is linked to each other with master control borad by display module; Infrared remote controller links to each other with master control borad by display module.
Above-mentioned computer integrated protection measure and control device, it is further characterized in that: described master control borad is made up of DSP, FPGA, ferroelectric memory, sample circuit, relay, and its contained relay is made up of protection divide-shut brake relay, latching relay, signal relay; Described power panel is made up of instrument transformer module and power module, and the instrument transformer module is a kind of current-to-voltage converter module; Described display module is made up of active opening into button, indicator light, LCD and infrared remote receiver.
Above-mentioned computer integrated protection measure and control device, it further is characterised in that: described power panel offers the master control borad power supply and exports DC110V and DC24V by the power taking of PT three-phase; It also has the communicating circuit part that is integrated on the master control borad, and the communication interface of isolating by photoelectricity can carry out distant place communication.
Above-mentioned computer integrated protection measure and control device, it further is characterised in that: when circuit generation overcurrent protection, the outlet of protective device fault actions, the inner simultaneously overcurrent block signal that produces is exported in the mode of light signal, externally carries out locking and uses.
Above-mentioned computer integrated protection measure and control device; it further is characterised in that: when protective device generation overcurrent protection receives outside overcurrent block signal simultaneously; the outlet of protective device time-delay fault actions; and to the input block signal handle again; and export once more in the mode of light signal, externally carry out locking.
Above-mentioned computer integrated protection measure and control device, it further is characterised in that: when protective device receives outside overcurrent block signal, and switch is under the gate-dividing state, just no longer externally sends out block signal.
Above-mentioned computer integrated protection measure and control device, it further is characterised in that: have no progeny the alarm signal actuating of relay outlet of device in optical fiber between the protective device connects.
Another kind is the anti-fibre concentrator of bypassing the immediate leadership, and model is SU20, comprises master control borad, power panel.
Above-mentioned fibre concentrator, it is further characterized in that: described master control borad is made up of FPGA, LED light, dial switch and relay, and its contained relay is made up of alarm relay, tripping operation blocking relay; Described power panel is that power module is formed.
Above-mentioned fibre concentrator, it further is characterised in that: output once more after FPGA can handle again to all input locking light signals of gathering is used for the locking of higher level supply line switch.
Above-mentioned fibre concentrator, it further is characterised in that: the block signal of output comprises light signal---be used for locking PA61 device; The signal of telecommunication---utilize the protective device of opening into the mode locking other types of locking; And tripping operation blocking relay outlet signal---be used for the secondary trip loop of locking higher level supply line switch.
Above-mentioned fibre concentrator, it further is characterised in that: optical fiber is connected and can judge, in optical fiber connects, have no progeny, the alarm relay action outlet of device, LED light is lighted simultaneously.
Above-mentioned fibre concentrator, it further is characterised in that: the dial switch on the master control borad can be thrown each locking input and move back control, avoids the alarm of device mistake.
Above-mentioned light block signal, it is further characterized in that: signal condition comprises " normal operating conditions ", " 1 ~ 10 grade of delay lock state ".
Above-mentioned light block signal, it is further characterized in that: the frequency different according to signal, signal is carried out state distinguish.
Above-mentioned light block signal, it is further characterized in that: the frequency of signal is to be generated by FPGA, when FPGA communicated by letter with DSP, the block signal of FPGA output different in width was given DSP.
Beneficial effect of the present invention:
Computer integrated protection PA61 man-machine interface close friend provides complete Chinese display interface and simple and direct visualized operation; Adaptability is strong, has the kinds of protect function, is applicable to multiple primary equipment requirement; Can protect the supporting formation intelligent switchboard system of switch cubicle producer with height, improve the technology content of switch cubicle itself, strengthen the competitive strength of switch cubicle; Integrated and the standardized product structure form of the height of pluralistic function integrates multiple functions such as protection, anti-overstep tripping, measurement, control, monitoring, communication, record ripple, logout.Outward appearance fashion, volume is little, and modularized design is easy to maintenance, reduces cost.
The anti-fibre concentrator SU20 profile of bypassing the immediate leadership is small and exquisite, can be easily installed in high guarantor in the switch cubicle, be used with PA61, form comprehensive anti-overstep tripping system, self be furnished with output of electric locking signal and the output of tripping operation blocking relay outlet signal in addition, can make things convenient for the tripping operation outlet of locking upper level supply line; Optical fiber connects indicator light, can conveniently check the situation that optical fiber connects, and working service is simple and convenient.
When over current fault appearred in circuit, the protective device on all associated circuitry sent block signal from bottom to up step by step, locking higher level circuit overcurrent protection outlet; In case after the optical fiber locking connected foundation, no matter how the operational mode of electric power system changes, no matter how the priority of supply line changes, each protective device need not to be provided with once more, can both effectively carry out locking, reaches the purpose of anti-overstep tripping.
Description of drawings
Fig. 1 is the structured flowchart of computer integrated protection among the present invention.
Fig. 2 is the structured flowchart of the anti-fibre concentrator of bypassing the immediate leadership among the present invention.
Fig. 3 is the wiring schematic diagram of the embodiment of the invention.
Fig. 4 is another wiring schematic diagram of the embodiment of the invention.
Embodiment
Technical scheme of the present invention is described further by specific embodiment below in conjunction with accompanying drawing.
Computer integrated protection PA61 mainly is made up of parts such as mainboard (comprising DSP, FPGA, ferroelectric memory, sample circuit, protection divide-shut brake relay, latching relay or the like), power panel (comprising power module, current-to-voltage converter module, amplifier module etc.), display module and Infrared remote controller.
As shown in Figure 1, be the structured flowchart of computer integrated protection PA61 in the present invention or the utility model.
Voltage and current signal after electrical network primary equipment voltage, the current transformer conversion is transformed into weak electric signal through microcomputer protecting device builtin voltage current transformer, be converted to digital quantity through multicircuit switch, operational amplifier, A/D converter, again by DSP handle, computing obtains the correspondent voltage current value; DSP accepts to open into button signal through pulse signal and switching value input signal (as circuit-breaker status), outside that photoelectricity is isolated simultaneously; All signals send corresponding breaker tripping and closing signal and alarm signal to the driving interface circuit after calculation process, drive circuit is delivered to each relay with these signals, and the breaker tripping and closing relay contact is connected the closing loop of contactor.The measured value of various signals, protection operating value, fixed value adjusting all show by LCD.
The communication interface of isolating by photoelectricity can carry out distant place communication, can realize remote measurement, remote signalling, remote control, remote regulating function, and adjust in the distant place that can realize definite value and inquiry, Remote protection are thrown and function such as moved back.
By the block signal of optical fiber interface input,, microcomputer protecting device is carried out the delay lock trip operation through sending to DSP after the FPGA processing; If line switching is in "on" position, the block signal that FPGA handles inserts in other PA61 or the SU20 device through the output of optical fiber locking interface; If line switching is in gate-dividing state, the optical fiber block signal is no longer externally exported.
The anti-fibre concentrator of bypassing the immediate leadership, model is SU20, comprises master control borad, power panel.
As shown in Figure 2, be the structured flowchart of the anti-fibre concentrator SU20 that bypasses the immediate leadership in the present invention or the utility model.
SU20 receives after all PA61 provide optical fiber locking letter, handles through FPGA, and the optical fiber outlet from SU20 exports PA61 to again, and it is carried out lock operation.
A kind of block signal processing method that realizes the anti-function of bypassing the immediate leadership, set up optical fiber locking anti-overstep tripping system, it comprises two kinds of devices, a kind of is the computer integrated protection PA61 of above-mentioned band anti-overstep tripping function, a kind of is the above-mentioned anti-fibre concentrator SU20 that bypasses the immediate leadership, between the described computer integrated protection, described computer integrated protection and anti-bypassing the immediate leadership all adopt the light block signal to connect locking between the fibre concentrator; Signal condition comprises " normal operating conditions ", " 1 ~ 10 grade of delay lock state "; The frequency different according to signal carried out state to signal and distinguished; The frequency of signal is to be generated by FPGA, and when FPGA communicated by letter with DSP, the block signal of FPGA output different in width was given DSP; Its step is:
Step 1: subordinate's microcomputer protecting device sends the light block signal to higher level's microcomputer protecting device or fibre concentrator;
Step 2: during operate as normal, utilize FPGA that block signal is handled, the signal frequency of output is 1MHz; When over current fault took place, after the PA61 of the bottom detected fault, the light block signal that it sends was 500KHz by two divided-frequency, export in the upper level switch P A61 protection, this block signal is 250KHz by two divided-frequency again, exports to again in the upper level switch P A61 protection, and the like; The switch limit priority is 10 grades; Block signal at most by frequency division to 1KHZ;
Step 3: FPGA is according to the different frequency of input light block signal, and the block signal of output different in width is given DSP;
Step 4: at fibre concentrator SU20, FPGA collects the highest signal of frequency, and externally output.
Comprise algorithm design, software design, hardware designs part in the invention in the design of block signal.
1, algorithm design: the core algorithm of block signal is the processing that this signal is encoded in the invention.
(1) bottom PA61 device sends the light block signal to upper level PA61 device or SU20.
(2) during operate as normal, utilize FPGA that block signal is handled, the signal frequency of output is 1MHz; When over current fault took place, after the PA61 of the bottom detected fault, the light block signal that it sends was 500KHz by two divided-frequency, export in the upper level switch P A61 protection, this block signal is 250KHz by two divided-frequency again, exports to again in the upper level switch P A61 protection, and the like; The switch limit priority is 10 grades; Block signal at most by frequency division to 1KHZ.
(3) FPGA is according to the different frequency of input light block signal, and the block signal of output different in width is given DSP.
(4) at SU20, FPGA compares processing to the signal of different frequency, externally the highest signal of output frequency.
When over current fault appears in circuit; through above step; protective device on all associated circuitry from bottom to up; send block signal step by step to higher level's line protective devices; higher level's circuit progression is high more; FPGA is just long more to the locking time-delay of DSP tripping operation output control, thoroughly solves traditional protection overstep tripping phenomenon.
2, software design: block signal is handled and is divided on software in the invention: signal generating routine, signal frequency split program and signal are to DSP delay lock output program.
The signal generating routine: during operate as normal, the external transmission frequency of FPGA is the light signal of 1MHz; After breaking down, the DSP of faulty line device sends high level signal to FPGA.
Signal frequency split program: FPGA handles the signal that DSP transmits, and outwards sends that frequency is the light signal of 500KHz behind the frequency division; If FPGA receives the exterior light block signal simultaneously, select the highest light signal of frequency, it is carried out frequency division handle, outwards transmit again.
Signal is to DSP delay lock output program: according to the different frequency of light block signal that receives, the block signal of FPGA output different in width is given DSP.
3, hardware designs: block signal is handled and is comprised input-output optical fiber port, FPGA, DSP in the invention.FPGA is the core module that block signal is handled, and finishes reception, frequency division and transmission etc. to signal.
If the present invention only bypasses the immediate leadership at the two-stage electric power system is anti-up and down, only need respectively dispose a PA61 at the circuit two ends, subordinate's route protection sends the light block signal to higher level's route protection, realizes anti-overstep tripping.As shown in Figure 3.
The present invention is if multilevel system, under the variable situation of many inlet wires, many segmentations, multiple supply power mode, every circuit need dispose a PA61, SU20 of configuration on every section bus, SU20 of configuration between a plurality of block switches of service entrance switch and direct correlation thereof, subordinate's switch is sent out block signal to the associated fragment switch, sends out block signal between the associated fragment mutually, and subordinate's switch and associated fragment switch are sent out block signal to service entrance switch.The employing multiple spot is concentrated, and the unified mode that sends block signal realizes anti-overstep tripping.As shown in Figure 4.
Though the present invention is with preferred embodiment openly as above, they are not to be used for limiting the present invention, anyly have the knack of this skill person, without departing from the spirit and scope of the invention, and certainly when can doing various variations or retouching, but equally within protection scope of the present invention.What therefore protection scope of the present invention should be defined with the application's claim protection range is as the criterion.
Claims (9)
1. computer integrated protection with the anti-overstep tripping function, comprise master control borad, power panel, display module and Infrared remote controller, it is characterized in that: the outside amount of opening input terminal, relay output end, RS485/CAN communication terminal, insulation resistance monitor input terminal and optical fiber locking input and output terminal all are integrated on the master control borad; External analog amount input terminal links to each other with master control borad by power panel; Display module links to each other with master control borad by communication cable; The outside is opened into control button and is linked to each other with master control borad by display module; Infrared remote controller links to each other with master control borad by display module.
2. computer integrated protection according to claim 1 is characterized in that: described master control borad is made up of DSP, FPGA, ferroelectric memory, sample circuit, protection divide-shut brake relay, latching relay, alarm relay; Described power panel is made up of instrument transformer module and power module, and described instrument transformer module is a kind of current-to-voltage converter module; Described display module is made up of active opening into button, indicator light, LCD and infrared remote receiver.
3. computer integrated protection according to claim 2 is characterized in that: described power panel offers the master control borad power supply and exports DC110V and DC24V by the power taking of PT three-phase.
4. computer integrated protection according to claim 2 is characterized in that: it also has the communicating circuit part that is integrated on the master control borad, and the communication interface of isolating by photoelectricity can carry out distant place communication.
5. according to each described computer integrated protection of claim 1 to 4, it is characterized in that: when circuit generation overcurrent protection, the outlet of protective device fault actions, the inner simultaneously overcurrent block signal that produces, mode with light signal is exported, and externally carries out locking and uses; Perhaps, when protective device generation overcurrent protection receives outside overcurrent block signal simultaneously, the outlet of protective device time-delay fault actions, and the input block signal encoded again, export in the mode of light signal equally, externally carry out locking; Perhaps, when protective device receives outside overcurrent block signal, and switch is under the gate-dividing state, just no longer externally sends out block signal; Perhaps, in connecting, optical fiber between the protective device has no progeny the alarm relay action outlet of device.
6. the anti-fibre concentrator of bypassing the immediate leadership comprises master control borad, power panel, and it is characterized in that: described master control borad is made up of FPGA, LED light, dial switch, alarm relay, tripping operation blocking relay; Power panel is that power module is formed.
7. the anti-fibre concentrator of bypassing the immediate leadership according to claim 6 is characterized in that: output once more after described FPGA can handle again to all input locking light signals of gathering is used for the locking of higher level supply line switch; The block signal of output comprises light signal, is used for the computer integrated protection of the described band anti-overstep tripping of locking claim 1 function; The signal of telecommunication utilizes the protective device of opening into the mode locking other types of locking; The tripping operation blocking relay exports signal, is used for the secondary trip loop of locking higher level supply line switch.
8. the anti-fibre concentrator of bypassing the immediate leadership according to claim 6 is characterized in that: optical fiber connected and can judge, in optical fiber connects, have no progeny, and the alarm relay action outlet of device, LED light is lighted simultaneously; Dial switch on the master control borad can be thrown each locking input and move back control, avoids the alarm of device mistake.
9. optical fiber locking anti-overstep tripping system, comprise two kinds of devices, a kind of is the computer integrated protection of the described band anti-overstep tripping of one of claim 1 to 5 function, a kind of is the described anti-fibre concentrator of bypassing the immediate leadership of one of claim 6 to 8, it is characterized in that: between the described computer integrated protection, described computer integrated protection and anti-bypassing the immediate leadership all adopt the light block signal to connect locking between the fibre concentrator; Signal condition comprises " normal operating conditions ", " 1 ~ n level delay lock state "; The frequency different according to signal carried out state to signal and distinguished; The frequency of signal is to be generated by FPGA, and when FPGA communicated by letter with DSP, the block signal of FPGA output different in width was given DSP.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205835688U CN201829937U (en) | 2010-10-29 | 2010-10-29 | Fiber-locking override-trip preventive system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205835688U CN201829937U (en) | 2010-10-29 | 2010-10-29 | Fiber-locking override-trip preventive system |
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| CN201829937U true CN201829937U (en) | 2011-05-11 |
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| CN2010205835688U Expired - Lifetime CN201829937U (en) | 2010-10-29 | 2010-10-29 | Fiber-locking override-trip preventive system |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101969191A (en) * | 2010-10-29 | 2011-02-09 | 南京因泰莱电器股份有限公司 | Optical fiber blocking override-avoiding tripping system |
| CN102280868A (en) * | 2011-08-05 | 2011-12-14 | 南京中德保护控制系统有限公司 | Method for preventing override trip of mine power supply system |
| CN102510048A (en) * | 2011-10-27 | 2012-06-20 | 深圳市华力特电气股份有限公司 | Anti-override trip protection system |
| CN115373297A (en) * | 2021-05-22 | 2022-11-22 | 山西菲斯数字技术有限公司 | Override trip prevention signal acquisition device |
-
2010
- 2010-10-29 CN CN2010205835688U patent/CN201829937U/en not_active Expired - Lifetime
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101969191A (en) * | 2010-10-29 | 2011-02-09 | 南京因泰莱电器股份有限公司 | Optical fiber blocking override-avoiding tripping system |
| CN101969191B (en) * | 2010-10-29 | 2015-03-11 | 南京因泰莱电器股份有限公司 | Optical fiber blocking override-avoiding tripping system |
| CN102280868A (en) * | 2011-08-05 | 2011-12-14 | 南京中德保护控制系统有限公司 | Method for preventing override trip of mine power supply system |
| CN102280868B (en) * | 2011-08-05 | 2014-03-19 | 国电南瑞南京控制系统有限公司 | Method for preventing override trip of mine power supply system |
| CN102510048A (en) * | 2011-10-27 | 2012-06-20 | 深圳市华力特电气股份有限公司 | Anti-override trip protection system |
| CN102510048B (en) * | 2011-10-27 | 2015-03-18 | 深圳市华力特电气股份有限公司 | Anti-override trip protection method |
| CN115373297A (en) * | 2021-05-22 | 2022-11-22 | 山西菲斯数字技术有限公司 | Override trip prevention signal acquisition device |
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