CN201639280U - Microcomputer bus protector automatically identifying running ways of bus - Google Patents
Microcomputer bus protector automatically identifying running ways of bus Download PDFInfo
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- CN201639280U CN201639280U CN2010201686190U CN201020168619U CN201639280U CN 201639280 U CN201639280 U CN 201639280U CN 2010201686190 U CN2010201686190 U CN 2010201686190U CN 201020168619 U CN201020168619 U CN 201020168619U CN 201639280 U CN201639280 U CN 201639280U
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Abstract
The utility model provides a microcomputer bus protector automatically and reliably identifying running ways of a bus connecting branch which is suitable for protection of power systems. The microcomputer bus protector switches in each signal normally-opened auxiliary contact connecting the disconnecting links of branch buses on the bus and secondary branch circuits, sets the input of a signal reset confirming button, the input of a bus protection and switch failure protection input state, and the input of mutual connection of the bus, judges whether the current value of the branch is under a running state with current or not when detecting the disconnecting link of the bus branch is deflected through the treatment of a programmable processor, and automatically identifies and processes the dynamic changing process of the states of the disconnecting links of the bus branch, thereby automatically and accurately identifying and following up the running ways of the bus in real time, realizing the warning output on the identifying abnormity of the disconnecting link of the bus, and guaranteeing a bus device to accurately realize the function required by the bus protection of power systems, thereby realizing the safe and reliable running of the microcomputer bus protector through the traditional way of the signal normally-opened auxiliary contact of the disconnecting link of the bus.
Description
Technical field
The utility model relates to the technical field of electrical system bus protection, relates in particular to a kind of microcomputer type protection equipment for busbar of automatic identification bus running manner.
Background technology
In electric power system, the high voltage power distribution protection equipment for busbar is one of most important element in the electric power system, and its fail safe and reliability requirement are high, in running, as breaks down and causes that consequence will be very serious.Protection equipment for busbar is the basic function and the precondition of a key to the correct identification of each branch road operational mode of allotting on the bus; particularly for the double bus scheme system in the electrical network; each Connection Element switches between two sections buses through being everlasting; therefore; protection equipment for busbar needs the correct variation of following bus running manner in real time, could the reliable function that realizes bus protection.
At present; the SEL-487B protective device of the protection equipment for busbar of foreign brand name such as the U.S., the protection equipment for busbar of ABB AB all adopt each secondary open type auxiliary contact and the closed type auxiliary contact with each bus disconnecting link on each branch road of bus connection to insert protective device simultaneously, discern the operational mode of each branch road reliably to guarantee device.If above-mentioned protection equipment for busbar only inserts a secondary open type auxiliary contact of bus disconnecting link; then can't guarantee the correct identification of protection equipment for busbar to each branch road operational mode of allotting on the bus; this situation will influence the correct operation performance and the security reliability of bus protection; may cause the bus protection malfunction or allot the switch tripping of branch road; electric power netting safe running is caused significant impact, and cause heavy economic losses or harm.
But when under the mode that substation bus bar has been put into operation, implementing the transformation of protection equipment for busbar; if when needing to introduce the microcomputer type protection equipment for busbar of two auxiliary contacts; must introduce each a secondary open type and closed type auxiliary contact of bus isolation switch; need to increase auxiliary contact loop and corresponding cable line; the bus disconnecting link that promptly is required to be each branch road increases single raise closed type auxiliary contact (former facility generally only has the auxiliary contact of a secondary open type to insert conventional protection equipment for busbar); not only need to increase the cable that inserts protective device; increase a large amount of rebuilding construction workloads simultaneously; the investment for trnasforming urban land expense is increased, can not guarantee the fail safe of rebuilding construction under the equipment operation condition in addition.
The utility model content
The purpose of this utility model is to insert at the single auxiliary contact of above-mentioned disconnecting link the problem of protection equipment for busbar; and provide a kind of microcomputer type protection equipment for busbar of automatic identification bus running manner; all connect the bus knife switch secondary contact of branch road on the bus to be implemented in; only need to utilize the access way of the single open type auxiliary contact of bus disconnecting link; can no matter why plant reason generation displacement when unusual at bus; bus running manner can be discerned and follow in real time to protective device all automatically reliably, thereby realize the safe and reliable operation of microcomputer type protection equipment for busbar.
For achieving the above object, the utility model is by the following technical solutions:
The utility model provides a kind of microcomputer type protection equipment for busbar with automatic identification bus running manner, and this device comprises: the working power module, open power module, have the switching value input circuit of opening the photoelectricity isolation module of opening amount more, input circuit and electric current A/D modular converter, programmable processor, high-speed data processor, microprocessor, communication interface module, man-machine monitor-interface module and the outlet signaling module of each branch current on the input circuit of bus alternating voltage and alternating voltage A/D modular converter, the bus.Wherein:
Described working power module inserts the programmable processor module, inverter module for protective device, the DC power supply inversion that transformer station can be provided is converted into the required light current working power of inner each module of protective device, wherein, + 15V and-15V provide power supply for each signal processing module of protective device, and+5V power supply is the power supply of microprocessor chip; Described opening into power module is connected and inserts the programmable processor module with opening into the photoelectricity isolation module, opens to can be into power module and opens the DC power supply that the switching value input circuit is provided into the photoelectricity isolation module.
Described have the switching value input circuit of opening into the photoelectricity isolation module of opening amount more and link to each other with programmable processor by opening into the photoelectricity isolation module, input circuit comprises that the position contact of the auxiliary contact of each branch road bus disconnecting link on the bus and bus connection switch, the failure protection of each switch start contact and relevant opening into contact, and be arranged on the input of opening into the photoelectricity isolation module; Promptly input circuit is provided with the signal return ACK button, bus protection drops into opening into contact of contact, failure protection input contact and manual interconnection switches.These switching value input signals link to each other with programmable processor through opening into the photoelectricity isolation module.
The input circuit of described bus alternating voltage and alternating voltage A/D modular converter are that the analog detection signal with the bus alternating voltage is converted into digital signal, pass through the digital low-pass filtering function simultaneously with the filtering high order harmonic component, link to each other with programmable processor after filtering; The input circuit of each branch current and electric current A/D modular converter on the described bus, be that analog detection signal with each branch road secondary AC electric current on the bus is converted into digital signal, pass through the digital low-pass filtering function simultaneously with the filtering high order harmonic component, after filtering, link to each other with programmable processor.
Described programmable processor by data/address bus and working power module, open into power module, open into photoelectricity isolation module, alternating voltage A/D modular converter, electric current A/D modular converter, high speed numerical processor, microprocessor, man-machine monitor-interface module, outlet signaling module and be connected; Be used for switching value input and output, analog quantity digital signal, defencive function and the logic of protective device are programmed in real time.
Described high speed numerical processor links to each other with microprocessor with programmable processor, is used for quick computing and processing to data.
Described microprocessor inserts programmable processor, is the kernel processor chip of protective device, is 32 bit processors, and links to each other with high speed numerical processor, man-machine monitor-interface and communication interface; Described man-machine monitor-interface is connected in programmable processor and microprocessor, is used for the man-machine interface interface that protective device monitors control; Described communication interface is connected with microprocessor, is used for the external automatically-monitored communication interface of protective device.
Described outlet signaling module links to each other with programmable processor, and the outlet signaling module comprises a plurality of tripping operation outlets, a plurality of signal outlet and the outlet of reporting to the police; The outlet signal is after switch amount input signal and analog signals detect, and carries out corresponding judgment by microprocessor and handles, and starts corresponding switch trip outlet and signal outlet and warning outlet according to result.
Working power module described in the utility model and open into power module and be power module independently separately has the power monitoring warning function respectively, and all uses the DC power supply of 110V or 220V.
According to technique scheme, the utility model realized and will respectively connect single open type auxiliary contact and this branch road secondary current access device of branch road bus disconnecting link on the bus, by signalization involution ACK button open into, bus protection and malfunctioning switch protection start with the state of input open into, bus manually interconnected open into; And the programming by programmable processor; when detecting bus branch road disconnecting link generation displacement, device judges whether this branch current value is in operation current status is arranged; automatically identification and the dynamic changing process of handling bus branch road disconnecting link state; thereby automatically correct identification is also followed bus running manner in real time, has solved the normal opened contact that each pair that existing protective device must insert the bus disconnecting link simultaneously verifies each other and the problem of normally closed auxiliary contact.Realized that by improvement bus connects branch road; particularly no matter why plant reason generation displacement when unusual for all bus knife switch secondary contacts that connect branch roads on the double-bus; bus running manner can be discerned and follow in real time to protective device all automatically reliably; send the unusual warning output of corresponding bus disconnecting link identification; guarantee that simultaneously bus device realizes that correctly electrical system bus protects desired function; realize the safe and reliable operation of microcomputer type protection equipment for busbar, not only saved the construction investment improvement expenses but also be convenient to field conduct in traditional single auxiliary contact mode of bus disconnecting link.
Description of drawings
Fig. 1 is the double-bus configuration system wiring schematic diagram of prior art;
Fig. 2 is the connection principle schematic diagram that single branch road inserts protection equipment for busbar in the double-bus configuration system of the present utility model; Wherein, IN-COM, IN207, IN208, IN209, IN210, I02 are a plurality of terminals of protective device.
Fig. 3 is the line construction theory diagram of protection equipment for busbar of the present utility model.
The reference numeral explanation: 110 is the working power module, 120 for opening into power module, 200 is the switching value input circuit, 300 for opening into the photoelectricity isolation module, 411 and 412 respectively is bus alternating voltage input circuit and A/D modular converter thereof, 421 and 422 respectively is each branch road secondary current input circuit of bus and A/D modular converter thereof, 500 is programmable processor (CPLD), 600 is high speed numerical processor (DSP), 700 is microprocessor CPU, 710 is communication interface module, and 800 is people's machine monitoring interface module (MMI), and 900 are the outlet signaling module.
Embodiment
Describe the technical solution of the utility model and execution mode with reference to the accompanying drawings in detail.Wherein, identical label is represented identical parts all the time, and the utility model is that example describes with SEL-487B type PC bus protection device.
Fig. 1 is the schematic diagram of the double-bus configuration system wiring of prior art.As shown in Figure 1, two buses, promptly I bus and II bus can have a plurality of branch road L1, L2, L3.At this, branch road L1 runs on female situation, and can use approach well known that this is handled this moment.Because the utility model does not relate to the processing of female situation, does not do detailed description at this.The utility model is an example with branch road L2 wherein; describe principle of the present utility model and application example in detail; insert protection equipment for busbar and application example for other loop of double bus scheme or the loop of single bus scheme system, similar with operation principle of the present utility model.
Fig. 2 is the connection principle schematic diagram that single branch road inserts protection equipment for busbar in the double-bus configuration system according to the utility model embodiment.In Fig. 2, be the mode of connection that example illustrates protection equipment for busbar with the branch road L2 among Fig. 1.Wherein, the switch number of label 1143 expression L2 branch roads.
As shown in Figure 2, with branch road L2, the branch road that promptly is numbered 1143 switches inserts SEL-487B type PC bus protection device.Specifically, the disconnecting link of the last I bus of branch road L2, II bus is often opened auxiliary contact and is designated 1143:1G_NO, 1143:2G_NO respectively with symbol, and the corresponding variable of opening that inserts protective device is numbered opening in the entry loop of IN207, IN209.Normally closed auxiliary contact among the figure is designated 1143:1G_NC respectively with symbol; 1143:2G_NC; it needs corresponding opening into variable of protective device of access to be numbered IN208; IN210 opens in the entry loop; contribution of the present utility model just is to save this normally closed auxiliary contact is inserted protective device; only adopt the access way of the single open type auxiliary contact of bus disconnecting link; thereby solved the problem that existing protective device must insert the normal opened contact and the normally closed auxiliary contact of bus disconnecting link simultaneously; carry out the transformation of protective device under the mode that realization has put into operation to substation bus bar; save improvement cost; shorten and transform the duration, can also guarantee the fail safe of rebuilding construction under the equipment operation condition simultaneously.
Fig. 3 is the modular structure theory diagram (is the improvement that example is carried out with the SEL-487B device) of the protection equipment for busbar of the utility model embodiment.Protection equipment for busbar as shown in Figure 3 comprises: working power module 110; open into power module 120; switching value input circuit 200 and opening into photoelectricity isolation module 300; the input circuit 411 of bus alternating voltage and alternating voltage A/D modular converter 412 (comprising the low-pass filtering function); the input circuit 421 of each branch current and electric current A/D modular converter 422 (comprising the low-pass filtering function) on the bus; programmable processor 500; high-speed data processor 600; microprocessor 700 and communication interface 710; man-machine monitor-interface module 800; functional modules such as outlet signaling module 900.
Wherein, described working power module 110 is the inverter module of protective device, the DC power supply inversion that the substation is provided is converted into the required light current working power of inner each module of protective device, its+15V provides power supply with-15V for installing each signal processing module, and+5V power supply is the power supply of all microprocessor chips; Described opening into power module 120 to opening the DC power supply that the switching value input circuit is provided into the photoelectricity isolation module; Its power monitoring program all is linked in the programmable processor 500, after the routine processes in the microprocessor 700, through the warning outlet output of outlet signaling module 900, sends the sign of reporting to the police through man-machine monitor-interface module 800 and communication interface 710.
Described have the switching value input circuit 200 of opening photoelectricity isolation module 300 of opening amount more and comprise the auxiliary contact of each branch road bus disconnecting link on the bus and the position contact of bus connection switch; the failure protection of each switch drops into contact and relevant opening into contact; these switching value input signals link to each other with programmable processor 500 with data/address bus by opening into photoelectricity isolation module 300; be used to provide the detection of dynamic signal of bus running manner, 2-1G among the figure; 2-2G; mother I of the 2nd branch road is represented in the switching value input of 2-BFI symbol respectively; the malfunctioning switch protection that the female disconnecting link of II is often opened auxiliary contact and branch road 2 starts the input contact.Opening into 300 effects of photoelectricity isolation module is that external switch amount input signal is isolated the binary digital signal that is converted into the inner identification of device, and possesses out the entry loop anti-interference function.Open the technological means of using always for those skilled in the art into photoelectricity isolation module 300, therefore no longer to this detailed description.
In having the switching value input circuit 200 of opening photoelectricity isolation module 300 of a plurality of amounts of opening, have access to signal return ACK button FA, bus protection input contact (switch) K1, failure protection input contact (switch) K2, manual interconnection switches (also claiming bus manual interconnection switches) K3.Its effect separately is as follows: by the real-time programming in logic of programmable processor 500, when sending " identification of bus disconnecting link is unusual " to be implemented in protective device, after confirming to have satisfied the involution condition, press signal return ACK button FA, make the alarm signal and sign involution of " identification of bus disconnecting link is unusual "; When needs dropped into bus differential protection, this bus protection dropped into the junction closure of K switch 1, and after protective device detected this closure signal, the bus differential protection function of device promptly dropped into; When needs dropped into failure protection, this failure protection dropped into the junction closure of K switch 2, and after device detected this closure signal, the failure protection function of device promptly dropped into; Need manually when interconnected in double-bus, then drop into this manual interconnection switches K3, after device detects this closure signal, the protection of single group bus is merged in the protection of two groups of buses automatically, will send the alarm signal and the sign of " bus is interconnected " at this moment.
The input circuit 411 of described bus alternating voltage and alternating voltage A/D modular converter 412; be that analog detection signal with the bus alternating voltage is converted into digital signal; pass through the digital low-pass filtering function simultaneously with the filtering high order harmonic component; link to each other with programmable processor 500 after filtering, the voltage blocking function and the voltage alarm signal that are respectively applied for bus protection are differentiated.
The input circuit 412 of each branch current and electric current A/D modular converter 422 on the described bus, be that analog detection signal with each branch road secondary AC electric current on the bus is converted into digital signal, pass through the digital low-pass filtering function simultaneously with the filtering high order harmonic component, after filtering, link to each other with programmable processor 500, I01 among Fig. 3, I02,---I18, be expressed as respectively branch road 1,2,--, 18 secondary AC electric current; Be used for the identification and the processing of busbar fault.Ua, Ub, Uc are expressed as the secondary voltage of bus PT A, B, C phase respectively, are used for bus protection voltage blocking and voltage detecting alarm signal and use.
Described high speed numerical processor 600 links to each other with microprocessor 700 with programmable processor 500, is used for data are carried out quick computing and processing.
Described microprocessor 700 inserts programmable processor 500, is the kernel processor chip of protective device, is 32 bit processors, and links to each other with high speed numerical processor 600, man-machine monitor-interface module 800 and communication interface module 710.
Described man-machine monitor-interface module 800 is connected in programmable processor 500 and microprocessor 700, is used for the man-machine interface interface that protective device monitors control.Described communication interface module 710 is connected with microprocessor 700, is used for the external automatically-monitored communication interface of protective device.
Described outlet signaling module 900 links to each other with programmable processor 500, and outlet signaling module 900 comprises a plurality of tripping operation outlets 1, tripping operation outlet 2, to tripping operation outlet m; A plurality of signal outlets 1 are to signal outlet n, and the outlet of reporting to the police.The outlet signal is after switch amount input signal and analog signals detect, and carries out corresponding judgment by microprocessor and handles, and starts corresponding switch trip outlet and signal outlet and warning outlet according to result.
Working power module described in the utility model and open into power module and be power supply independently separately has the power monitoring warning function respectively, to guarantee the reliably working of protective device.Two kinds of power supplys all use the DC power supply of 110V or 220V, have improved and have protected antijamming capability and the reliability of opening entry loop.
Microcomputer Processing Program part of the present utility model and bus protection basic function are the known technology of this area; function according to described each module of the utility model; those skilled in the art can carry out various programmings and can realize above-mentioned functions, is not described in detail at this.It below is specific embodiment.
Embodiment
1) access of each branch road detection signal
The electric current of each branch road on the bus equipment is inserted the corresponding input terminal of protective device from the secondary side of its current transformer, and each secondary open type auxiliary contact of two groups of bus disconnecting links on each branch road directly inserts the opening into photoelectricity isolation module 300 of a plurality of switching value input terminals of protective device correspondence in the idle contact mode.
For example; the termination of the secondary winding TA3 that is used for bus protection of branch road L2 current transformer shown in Figure 2 is gone into the corresponding input terminal I02 of protection equipment for busbar; the other end is received the nonpolar current terminal (not shown) of protection equipment for busbar; the common current terminal that this nonpolar terminal is a ground connection; link to each other with the nonpolar terminal of all electric current input circuits; the auxiliary normal opened contact (L2:2G_NO or 1143:2G_NO) of disconnecting link of the auxiliary normal opened contact (L2:1G_NO or 1143:1G_NO) of I group bus disconnecting link of branch road L2 and the II group bus of branch road L2 directly is linked on the IN207 and IN209 terminal of protective device correspondence respectively in the idle contact mode; simultaneously; the other end of its auxiliary normal opened contact 1G_NO and 2G_NO is connected to the public terminal of opening into DC power supply of protection equipment for busbar and (promptly opens the terminal into COM; it is the positive supply of opening into power supply; wherein; IN_COM is the protection equipment for busbar internal number; opening into COM is the external circuit numbering), open entry loop thereby form disconnecting link.
In Fig. 3, have the auxiliary normal opened contact of I group bus disconnecting link that mark 2-1G, 2-2G on the switching value input circuit 200 of opening photoelectricity isolation module 300 of a plurality of amounts of opening then correspond respectively to branch road 2 and assist normal opened contact with the disconnecting link of II group bus.By that analogy; can insert mark 18-1G, 18-2G on the switching value input circuit 200 as other branch road in the bus; then distinguish the auxiliary normal opened contact of I group bus disconnecting link of corresponding branch road 18 and the auxiliary normal opened contact of disconnecting link of II group bus; I01--I18 corresponds respectively to the input of branch road 1 to the Current Transformer Secondary electric current of branch road 18; mark 1-BF1 among Fig. 3,18-BF1 be the failure protection of corresponding branch road 1--18 start and open into make and break contact.Ua, Ub, Uc are expressed as the secondary voltage of bus PT A, B, C phase respectively, are used for bus protection voltage blocking and voltage detecting alarm signal and use.
2) microcomputer protecting device is discerned the auto-programming processing of operational mode automatically
(a) according to shown in Figure 3, by the switching value input state of opening photoelectricity isolation module 300 after programmable processor 500 programmed process, press its routine processes by microprocessor 700, microprocessor 700 detects the closure state of often opening auxiliary contact of often opening auxiliary contact and II bus disconnecting link of the I bus disconnecting link of each branch road, be that microprocessor 700 judges that this branch road is to operate in I bus or II bus, and this status indicator information sent in data/address bus is sent into programmable processor 500, man-machine monitor-interface module 800 and communication interface 710, to share this information.
(b) if the microprocessor 700 in the protective device detects the I bus disconnecting link contact of branch road by the variation of make position to open position; and when the female disconnecting link contact of its II is in off-state; digital signal after then the alternating current A/D modular converter after high-speed data processor 600 is handled is changed; judge by its program whether the running current of this branch road surpasses the threshold values of running current by microprocessor 700; this threshold values is determined according to the accuracy of detection and the maximum multiple that allows of protective device; the threshold values of general this electric current is 0.04IN; wherein IN is the rated secondary current of current transformer; be generally two kinds of specifications of 5A or 1A; for the current transformer of 5A, this threshold value is less than 0.20A.Differentiate the state that electric current is arranged for operation if this branch road detects, automatically this branch road is identified as after then the microprocessor 700 of protective device is handled and operates in the I bus, and the sign of " the I bus disconnecting link state recognition of this branch road is unusual " is set in microprocessor 700.This sign is sent in programmable processor 500, man-machine monitor-interface module 800 and the communication interface module 710 through internal data bus and is provided with, and protective device sends " identification of bus disconnecting link is unusual " by outlet signaling module 900 and alarms output signal.This signal keeps always, and when satisfying the involution condition, this signal could return in involution.Be currentless state if this branch road detects to differentiate, then program is accepted the variation that the state of the I bus disconnecting link contact of this branch road returns in the microprocessor 700 of protective device, promptly is identified as normal mode and switches variation.
(c) Yu (b) method is similar; if the microprocessor 700 in the protective device detects the II bus disconnecting link contact of branch road by the variation of make position to open position; and when its I bus disconnecting link contact is in off-state; then judge by its program whether the running current that detects this branch road surpasses the threshold values that operation has electric current by microprocessor 700; if detecting, this branch road differentiates the state that electric current is arranged for operation; automatically this branch road is identified as after then the microprocessor 700 of protective device is handled and operates in the II bus; the sign of " the female disconnecting link state recognition of the II of this branch road is unusual " is set, and protective device sends " identification of bus disconnecting link is unusual " alarm output signal by outlet signaling module 900.This signal keeps always, and when satisfying the involution condition, this signal could return in involution.Be currentless state if this branch road detects to differentiate, then protective device is accepted the variation that the state of the II bus disconnecting link contact of this branch road returns, and promptly is identified as normal mode and switches variation.
(d) if the program detection judges that branch road operates in female and mother II of I simultaneously in the microprocessor 700 of protective device; perhaps detect " bus is manually interconnected " signal when input of sending into into photoelectricity isolation module 300 by opening; then protective device program processing and identification in microprocessor 700 is sent " bus is interconnected " signal after export signaling module 900, and handles the protection logic automatically by " bus is interconnected " logic.
(e) after sending " identification of bus disconnecting link is unusual " alarm output signal; the involution condition that satisfies is meant: this bus disconnecting link contact is after confirming that inspection and processing return to its original normally closed state; perhaps detecting this branch road stops transport; promptly the detection electric current of this branch road has the threshold values of electric current less than operation; this moment, the microprocessor 700 of protective device recognized the involution affirmation command signal existence of sending into into photoelectricity isolation module 300 by opening; then the involution of " identification of bus disconnecting link is unusual " alarm output signal ability disappears, otherwise this alarm signal keeps always.
(f) in a plurality of switching value input circuits 200, have access to signal return ACK button FA, bus protection input K switch 1, failure protection input K switch 2, manual interconnection switches K3.Its effect separately is as follows respectively:
By the real-time programming in logic of programmable processor 500, when sending " identification of bus disconnecting link is unusual " to be implemented in protective device, confirm to have satisfied and press this button F A after the involution condition and the alarm signal and the sign of involution " identification of bus disconnecting link is unusual ".When needs dropped into bus differential protection, this bus protection dropped into the junction closure of K switch 1, and after device detected this closure signal, the bus differential protection function of device promptly dropped into; When needs drop into failure protection; this failure protection drops into the junction closure of K switch 2; after device detects this closure signal; the failure protection function of device promptly drops into; 1-BF1;--18-BF1 is that the malfunctioning switch protection of 1--18 branch road starts the contact that drops into, and when needs dropped into the malfunctioning switch protection of certain branch road and possess the contact of malfunctioning switch startup, the malfunctioning switch protection was promptly dropped in this loop.This signal after opening photoelectricity isolation module 300 by programmable processor 500 programmed process, again by microprocessor 700 by after its routine processes, press the corresponding outlet of function on (its processing method is handled by the industry known technology, does not just carefully state at this) of failure protection.Need manually when interconnected in double-bus, then drop into this manual interconnection switches K3, after device detects this closure signal, the protection of single group bus is merged in the protection of two groups of buses automatically, will send the alarm signal and the sign of " bus is interconnected " at this moment.
(g) with the working power module 110 of protective device with open into power module 120 independently-poweredly, the power monitoring warning function is all arranged separately.Disappear if open into power supply or working power, programming definition by programmable processor 500, by microprocessor 700 calculation process rear drives outlet signaling module 900, the alarm contact output signal of " device is unusual " is sent in a secondary closed type contact by outlet signaling module 900, and the alarm outlet junction closure of its outlet signal circuit is connected.At this, outlet signaling module 900 has a plurality of exit relays to satisfy the bus protection export requirement, respectively by programmable processor 500 programming definition, and by determining whether to drive output after microprocessor 700 calculation process.
Improvement by above type of attachment to bus branch road and microcomputer protecting device; and program and signal processing and the control of passing through the microcomputer type protective device; the only unusual displacement supervision of the single open type auxiliary contact of access leg bus disconnecting link and the security monitoring of defencive function have been realized; make bus knife switch secondary contact no matter why plant reason generation displacement when unusual; the bus running manner of the unusual previous moment of disconnecting link displacement can both be judged and be modified to protective device or automatically according to the self-adapting operation mode under the actual motion environmental condition; send " identification of bus disconnecting link is unusual " or outlet signal such as " bus is interconnected " alarm or alarm identifier simultaneously; avoid protective device malfunction or tripping; thereby improve the reliability of protective device, guaranteed the function of bus protection simultaneously.
The utility model does not need that protective device is carried out hand-operated forced intervention the branch equipment operational mode is set; do not need to dispose in addition bus simulation indicating dial yet and indicate the adaptation bus running manner; can realize that not only the protection equipment for busbar under the bus disconnecting link list auxiliary contact access way follows bus running manner in real time to the self adaptation reliably under the double bus scheme mode, be applicable to that equally also self adaptation is followed the operational mode that connects branch road on the bus under the single bus scheme mode.Even when the bus knife switch secondary contact state of each branch road makes a mistake simultaneously on bus, also can satisfy automatic identification and warning, thereby the safe and reliable operation of realization microcomputer type protection equipment for busbar is saved investment cost and retrofit work amount that bus protection is transformed.
The utility model is illustrated by preferred embodiment, but should be appreciated that the foregoing description does not limit the present invention in any form.All employings are equal to the technical scheme that form obtained of replacement or equivalent transformation, all drop on protection scope of the present invention.
Claims (8)
1. automatic microcomputer type protection equipment for busbar of identification bus running manner is characterized in that described protective device comprises:
The working power module, open power module, have the switching value input circuit of opening the photoelectricity isolation module of opening amount more, input circuit and electric current A/D modular converter, programmable processor, high-speed data processor, microprocessor, communication interface module, man-machine monitor-interface module and the outlet signaling module of each branch current on the input circuit of bus alternating voltage and alternating voltage A/D modular converter, the bus;
Wherein, described working power module inserts the monitoring of being programmed of programmable processor module, for each module of protective device inside provides required working power; Described opening into power module is connected and inserts the monitoring of being programmed of programmable processor module with opening into the photoelectricity isolation module, for opening the DC power supply that the switching value input circuit is provided into the photoelectricity isolation module;
Described have the switching value input circuit of opening into the photoelectricity isolation module of opening amount more and link to each other with programmable processor by opening into the photoelectricity isolation module;
The input circuit of described bus alternating voltage and alternating voltage A/D modular converter, and the input circuit and the electric current A/D modular converter of each branch current on the bus all link to each other with the programmable processor module;
Described programmable processor by data/address bus and working power module, open into power module, open into photoelectricity isolation module, alternating voltage A/D modular converter, electric current A/D modular converter, high speed numerical processor, microprocessor, man-machine monitor-interface module, outlet signaling module and be connected; Be used for switching value input and output, analog quantity digital signal, defencive function and the logic of protective device are programmed in real time;
Described high speed numerical processor links to each other with microprocessor with programmable processor, is used for quick computing and processing to data;
Described microprocessor inserts programmable processor, is 32 bit processors, and links to each other with high speed numerical processor, man-machine monitor-interface and communication interface;
Described man-machine monitor-interface is connected in programmable processor and microprocessor, is used to monitor the man-machine interface interface of control;
Described outlet signaling module links to each other with programmable processor, and described outlet signaling module comprises a plurality of tripping operation outlets, a plurality of signal outlet and the outlet of reporting to the police.
2. microcomputer type protection equipment for busbar according to claim 1; it is characterized in that described working power module is the inverter module; the DC power supply inversion that the substation is provided is converted into the required light current working power of each module; wherein; + 15V and-15V provide power supply for installing each signal processing module, and+5V power supply is the power supply of all microprocessor chips.
3. microcomputer type protection equipment for busbar according to claim 1 is characterized in that describedly having the switching value input circuit into the photoelectricity isolation module opened of opening amount more and being provided with signal return ACK button, bus protection and dropping into contact, failure protection and drop into contact and manual opening into contact of interconnection switches.
4. microcomputer type protection equipment for busbar according to claim 1; the input circuit and the alternating voltage A/D modular converter that it is characterized in that described bus alternating voltage; be that analog detection signal with the bus alternating voltage is converted into digital signal; pass through the digital low-pass filtering function simultaneously with the filtering high order harmonic component, after filtering, link to each other with programmable processor.
5. microcomputer type protection equipment for busbar according to claim 1; the input circuit and the electric current A/D modular converter that it is characterized in that each branch current on the described bus; be that analog detection signal with each branch road secondary AC electric current on the bus is converted into digital signal; pass through the digital low-pass filtering function simultaneously with the filtering high order harmonic component, after filtering, link to each other with programmable processor.
6. microcomputer type protection equipment for busbar according to claim 1; it is characterized in that described outlet signal is after switch amount input signal and analog signals detect; carry out corresponding judgment by microprocessor and handle, start corresponding switch trip outlet and signal outlet and warning outlet according to result.
7. microcomputer type protection equipment for busbar according to claim 1 is characterized in that described working power module and described opening into power module are power module independently separately, and has the power monitoring function respectively.
8. microcomputer type protection equipment for busbar according to claim 1 is characterized in that described working power module and the described DC power supply of all using 110V or 220V into power module of opening.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201686190U CN201639280U (en) | 2010-04-23 | 2010-04-23 | Microcomputer bus protector automatically identifying running ways of bus |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201686190U CN201639280U (en) | 2010-04-23 | 2010-04-23 | Microcomputer bus protector automatically identifying running ways of bus |
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| Publication Number | Publication Date |
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| CN201639280U true CN201639280U (en) | 2010-11-17 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2010201686190U Expired - Fee Related CN201639280U (en) | 2010-04-23 | 2010-04-23 | Microcomputer bus protector automatically identifying running ways of bus |
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| CN (1) | CN201639280U (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102331535A (en) * | 2011-06-09 | 2012-01-25 | 郝玉山 | Alternating current physical quantity measuring device and method as well as data acquisition device and method |
| CN104009449A (en) * | 2014-05-13 | 2014-08-27 | 龙滩水电开发有限公司 | 3 kV-10 kV bus protection and failure protection method |
| CN104467557A (en) * | 2014-12-05 | 2015-03-25 | 攀钢集团攀枝花钢钒有限公司 | Method for regulating speed of DC motor |
| CN105954626A (en) * | 2016-06-22 | 2016-09-21 | 国网山东省电力公司莱芜供电公司 | Portable microcomputer bus protection apparatus tester |
| CN108226810A (en) * | 2016-12-22 | 2018-06-29 | 陕西金电电子科技有限责任公司 | A kind of anti-decompression monitoring device of DC power supply and monitoring method |
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2010
- 2010-04-23 CN CN2010201686190U patent/CN201639280U/en not_active Expired - Fee Related
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102331535A (en) * | 2011-06-09 | 2012-01-25 | 郝玉山 | Alternating current physical quantity measuring device and method as well as data acquisition device and method |
| CN102331535B (en) * | 2011-06-09 | 2014-06-04 | 郝玉山 | Alternating current physical quantity measuring device and method as well as data acquisition device and method |
| CN104009449A (en) * | 2014-05-13 | 2014-08-27 | 龙滩水电开发有限公司 | 3 kV-10 kV bus protection and failure protection method |
| CN104009449B (en) * | 2014-05-13 | 2017-05-03 | 龙滩水电开发有限公司 | 3 kV-10 kV bus protection and failure protection method |
| CN104467557A (en) * | 2014-12-05 | 2015-03-25 | 攀钢集团攀枝花钢钒有限公司 | Method for regulating speed of DC motor |
| CN105954626A (en) * | 2016-06-22 | 2016-09-21 | 国网山东省电力公司莱芜供电公司 | Portable microcomputer bus protection apparatus tester |
| CN108226810A (en) * | 2016-12-22 | 2018-06-29 | 陕西金电电子科技有限责任公司 | A kind of anti-decompression monitoring device of DC power supply and monitoring method |
| CN109616996A (en) * | 2018-12-07 | 2019-04-12 | 长园深瑞继保自动化有限公司 | The more handset bus protection disconnecting link memories of looped network differentiate and synchronous method |
| CN109616996B (en) * | 2018-12-07 | 2020-06-02 | 长园深瑞继保自动化有限公司 | Memory discrimination and synchronization method for bus protection knife switch of ring network multi-submachine |
| CN112436490A (en) * | 2020-12-01 | 2021-03-02 | 北京四方继保自动化股份有限公司 | Multi-bus interconnection self-identification method and device |
| CN112436490B (en) * | 2020-12-01 | 2023-06-16 | 北京四方继保自动化股份有限公司 | Multi-bus interconnection self-identification method and device |
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