CN104967206A - Coal mine low voltage double loop dual supply permanent magnet feed interconnection switch operating circuit - Google Patents
Coal mine low voltage double loop dual supply permanent magnet feed interconnection switch operating circuit Download PDFInfo
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- CN104967206A CN104967206A CN201510282961.0A CN201510282961A CN104967206A CN 104967206 A CN104967206 A CN 104967206A CN 201510282961 A CN201510282961 A CN 201510282961A CN 104967206 A CN104967206 A CN 104967206A
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Abstract
The invention provides a coal mine low voltage double loop dual supply permanent magnet feed interconnection switch operating circuit, belonging to the permanent magnet feed interconnection switch technical filed. The circuit can supply power continuously, and timely detect halt reasons. In the technical scheme, the circuit comprises a first power supply loop, a second power supply loop and a permanent magnet feed interconnection switch; the permanent magnet feed interconnection switch comprises a first low voltage permanent magnet vacuum feed branch, a second low voltage permanent magnet vacuum feed branch, and binding posts L1, L2, and L3. The circuit is suitable for the feed switch technical field.
Description
Technical field
Low pressure double loop, colliery of the present invention duplicate supply permanent magnetism feed interconnection switch operating circuit, belongs to the technical field of permanent magnetism feed interconnection switch.
Background technology
Along with completing of coal resources merging and reorganization; coal industry defines large group and the general layout of depositing; colliery grouping of the world economy more, scale; the coal production of single pithead is increasing; the normal important means that to run continuously be Safety of Coal Mine Production, complete and overfulfill the assignment how ensureing equipment; particularly, hommization more integrated to the requirement of some visual plants, requires higher to the work continuity of equipment, emergency processing.
For adapting to the actual demand of coal mine user, on the basis of the quick-fried interconnection switch Successful utilization of height, low pressure double loop, colliery duplicate supply permanent magnetism feed interconnection switch arises at the historic moment; It solve the discontinuity that some key equipments are powered, avoid the shutdown caused because higher level's power supply unit has a power failure and stop production, ensured that the normal of equipment runs and Safety of Coal Mine Production continuously.
Summary of the invention
The present invention overcomes the deficiency that prior art exists, and technical problem to be solved is: provide a kind of and realize powering continuously and can detect the permanent magnetism feed interconnection switch operating circuit of shutting down reason in time.
In order to solve the problems of the technologies described above, the technical solution used in the present invention is: low pressure double loop, colliery duplicate supply permanent magnetism feed interconnection switch operating circuit, comprises the first electric power loop, second source loop and permanent magnetism feed interconnection switch, described first electric power loop comprises the first colliery high voltage source, first mining high-explosive switch, first flameproof dry type transformer and the first low-voltage vacuum feed master switch, described second source loop comprises the second colliery high voltage source, second mining high-explosive switch, second flameproof dry type transformer and the second low-voltage vacuum feed master switch, described permanent magnetism feed interconnection switch comprises the first low voltage permanent magnetic vacuum feed leg, second low voltage permanent magnetic vacuum feed leg and binding post L1, L2, L3, described first low voltage permanent magnetic vacuum feed leg comprises the first low voltage vacuum circuit breaker for permanent, first power transformer T1, first intelligent feeder protection equipment ZB1 and binding post U2, V2, W2, described second low voltage permanent magnetic vacuum feed leg comprises the second low voltage vacuum circuit breaker for permanent, second source transformer T2, second intelligent feeder protection equipment ZB2 and binding post U3, V3, W3, the carrying out of described first low-voltage vacuum feed master switch is held and is connected in series the first flameproof dry type transformer successively and is connected with the first colliery high voltage source with after the first mining high-explosive switch, the communication terminal of described first low-voltage vacuum feed master switch is connected with the first intelligent feeder protection equipment ZB1, described first intelligent feeder protection equipment ZB1 is also connected with the leading-out terminal of the first power transformer T1 with the first control end of the first low voltage vacuum circuit breaker for permanent respectively, the end of incoming cables of described first power transformer T1 is also connected with the leading-out terminal of the first low-voltage vacuum feed master switch after connecing the end of incoming cables of the first low voltage vacuum circuit breaker for permanent, the leading-out terminal of described first low voltage vacuum circuit breaker for permanent and binding post U2, V2, W2 is connected, the carrying out of described second low-voltage vacuum feed master switch is held and is connected in series the second flameproof dry type transformer successively and is connected with the second colliery high voltage source with after the second mining high-explosive switch, the communication terminal of described second low-voltage vacuum feed master switch is connected with the second intelligent feeder protection equipment ZB2, described second intelligent feeder protection equipment ZB2 is also connected with the leading-out terminal of second source transformer T2 with the first control end of the second low voltage vacuum circuit breaker for permanent respectively, the end of incoming cables of described second source transformer T2 is also connected with the leading-out terminal of the second low-voltage vacuum feed master switch after connecing the end of incoming cables of the second low voltage vacuum circuit breaker for permanent, the leading-out terminal of described second low voltage vacuum circuit breaker for permanent and binding post U3, V3, W3 is connected, second control end of described first low voltage vacuum circuit breaker for permanent is connected with the second intelligent feeder protection equipment ZB2, second control end of described second low voltage vacuum circuit breaker for permanent is connected with the first intelligent feeder protection equipment ZB1, described first intelligent feeder protection equipment ZB1 also feeder protection equipment ZB2 intelligent with second is connected, and described binding post U2, V2, W2 are all connected with binding post L1, L2, L3 with binding post U3, V3, W3.
Described first intelligent feeder protection equipment ZB1 comprises the first power subsystem, first output unit, first processor unit and the first communication unit, described first processor unit respectively with the first power subsystem, first output unit is connected with the first communication unit, described second intelligent feeder protection equipment ZB2 comprises second source unit, second output unit, second processor unit and the second communication unit, described second processor unit respectively with second source unit, second output unit is connected with the second communication unit, described first power subsystem is connected with the leading-out terminal of the first power transformer T1, described first output unit is connected with the first control end of the first low voltage vacuum circuit breaker for permanent, described first communication unit is connected with the communication terminal of the second communication unit with the first low-voltage vacuum feed master switch respectively, described second source unit is connected with the leading-out terminal of second source transformer T2, described second output unit is connected with the first control end of the second low voltage vacuum circuit breaker for permanent, described second communication unit is connected with the communication terminal of the second low-voltage vacuum feed master switch, described first intelligent feeder protection equipment ZB1 also comprises the first display, and described first display is connected with first processor unit, and described second intelligent feeder protection equipment ZB2 also comprises second display, and described second display is connected with the second processor unit, the end of incoming cables of described first power transformer T1 is also connected with the leading-out terminal of the first low-voltage vacuum feed master switch by binding post U0, V0, W0 after connecing the end of incoming cables of the first low voltage vacuum circuit breaker for permanent, the end of incoming cables of described second source transformer T2 is also connected with the leading-out terminal of the second low-voltage vacuum feed master switch by binding post U1, V1, W1 after connecing the end of incoming cables of the second low voltage vacuum circuit breaker for permanent, described first intelligent feeder protection equipment ZB1 is connected with the second intelligent feeder protection equipment ZB2 by CAN communication line, the communication terminal of described first low-voltage vacuum feed master switch is connected with the first intelligent feeder protection equipment ZB1 by RS485 connection, the communication terminal of described second low-voltage vacuum feed master switch is connected with the second intelligent feeder protection equipment ZB2 by RS485 connection, described first colliery high voltage source and the second colliery high voltage source are 6KV high voltage source, described first colliery high voltage source and the second colliery high voltage source are 10KV high voltage source.
The present invention compared with prior art has following beneficial effect:
Low pressure double loop, colliery duplicate supply permanent magnetism feed interconnection switch operating circuit, comprises the first electric power loop, second source loop and permanent magnetism feed interconnection switch, described first electric power loop comprises the first colliery high voltage source, first mining high-explosive switch, first flameproof dry type transformer and the first low-voltage vacuum feed master switch, described second source loop comprises the second colliery high voltage source, second mining high-explosive switch, second flameproof dry type transformer and the second low-voltage vacuum feed master switch, described permanent magnetism feed interconnection switch comprises the first low voltage permanent magnetic vacuum feed leg, second low voltage permanent magnetic vacuum feed leg and binding post L1, L2, L3, described first low voltage permanent magnetic vacuum feed leg comprises the first low voltage vacuum circuit breaker for permanent, first power transformer T1, first intelligent feeder protection equipment ZB1 and binding post U2, V2, W2, described second low voltage permanent magnetic vacuum feed leg comprises the second low voltage vacuum circuit breaker for permanent, second source transformer T2, second intelligent feeder protection equipment ZB2 and binding post U3, V3, W3, the present invention can export by Switching power between the first electric power loop and second source loop, and the first intelligent feeder protection equipment ZB1, the second intelligent feeder protection equipment ZB2 detection power failure promptly and accurately can be passed through and shut down reason, for the safety in production in colliery brings guarantee, if load side fault trip is shut down then forbid that loop switch closes a floodgate, secondary failure is avoided to damage, the dead electricity then switching circuit combined floodgate if one of them source-side fault dead electricity or higher level trip, the power supply of another electric power loop is exported, ensure continuity and the fail safe of power supply, whole circuit structure is succinct, easy to install, practical.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, the present invention will be further described in detail;
Fig. 1 is electrical block diagram of the present invention;
In figure: 1 is the first colliery high voltage source, 2 is the second colliery high voltage source, 3 is the first mining high-explosive switch, 4 is the second mining high-explosive switch, 5 is the first flameproof dry type transformer, 6 is the second flameproof dry type transformer, 7 is the first low-voltage vacuum feed master switch, 8 is the second low-voltage vacuum feed master switch, 9 is the first low voltage vacuum circuit breaker for permanent, 10 is the second low voltage vacuum circuit breaker for permanent, 11 is the first power subsystem, 12 is the first output unit, 13 is first processor unit, 14 is the first display, 15 is the first communication unit, 16 is second source unit, 17 is the second output unit, 18 is the second processor unit, 19 is second display, 20 is the second communication unit.
Embodiment
As shown in Figure 1, low pressure double loop, colliery duplicate supply permanent magnetism feed interconnection switch operating circuit, comprise the first electric power loop, second source loop and permanent magnetism feed interconnection switch, described first electric power loop comprises the first colliery high voltage source 1, first mining high-explosive switch 3, first flameproof dry type transformer 5 and the first low-voltage vacuum feed master switch 7, described second source loop comprises the second colliery high voltage source 2, second mining high-explosive switch 4, second flameproof dry type transformer 6 and the second low-voltage vacuum feed master switch 8, particularly, described first colliery high voltage source 1 and the second colliery high voltage source 2 can be independent power supply, also can be provided by two of an a power supply different transmission of electricity port, described permanent magnetism feed interconnection switch comprises the first low voltage permanent magnetic vacuum feed leg, the second low voltage permanent magnetic vacuum feed leg and binding post L1, L2, L3, described first low voltage permanent magnetic vacuum feed leg comprises the first low voltage vacuum circuit breaker for permanent 9, first power transformer T1, first intelligent feeder protection equipment ZB1 and binding post U2, V2, W2, and described second low voltage permanent magnetic vacuum feed leg comprises the second low voltage vacuum circuit breaker for permanent 10, second source transformer T2, second intelligent feeder protection equipment ZB2 and binding post U3, V3, W3,
The carrying out of described first low-voltage vacuum feed master switch 7 is held and is connected in series the first flameproof dry type transformer 5 successively and is connected with the first colliery high voltage source 1 with after the first mining high-explosive switch 3, the communication terminal of described first low-voltage vacuum feed master switch 7 is connected with the first intelligent feeder protection equipment ZB1, described first intelligent feeder protection equipment ZB1 is also connected with the leading-out terminal of the first power transformer T1 with the first control end of the first low voltage vacuum circuit breaker for permanent 9 respectively, the end of incoming cables of described first power transformer T1 is also connected with the leading-out terminal of the first low-voltage vacuum feed master switch 7 after connecing the end of incoming cables of the first low voltage vacuum circuit breaker for permanent 9, the leading-out terminal of described first low voltage vacuum circuit breaker for permanent 9 and binding post U2, V2, W2 is connected, the carrying out of described second low-voltage vacuum feed master switch 8 is held and is connected in series the second flameproof dry type transformer 6 successively and is connected with the second colliery high voltage source 2 with after the second mining high-explosive switch 4, the communication terminal of described second low-voltage vacuum feed master switch 8 is connected with the second intelligent feeder protection equipment ZB2, described second intelligent feeder protection equipment ZB2 is also connected with the leading-out terminal of second source transformer T2 with the first control end of the second low voltage vacuum circuit breaker for permanent 10 respectively, the end of incoming cables of described second source transformer T2 is also connected with the leading-out terminal of the second low-voltage vacuum feed master switch 8 after connecing the end of incoming cables of the second low voltage vacuum circuit breaker for permanent 10, the leading-out terminal of described second low voltage vacuum circuit breaker for permanent 10 and binding post U3, V3, W3 is connected, second control end of described first low voltage vacuum circuit breaker for permanent 9 is connected with the second intelligent feeder protection equipment ZB2, second control end of described second low voltage vacuum circuit breaker for permanent 10 is connected with the first intelligent feeder protection equipment ZB1, described first intelligent feeder protection equipment ZB1 also feeder protection equipment ZB2 intelligent with second is connected, and described binding post U2, V2, W2 are all connected with binding post L1, L2, L3 with binding post U3, V3, W3.
Particularly, if above-mentioned first flameproof dry type transformer 5, during the second flameproof dry type transformer 6 out-put supply, then the first electric power loop, second source loop is all charged, first low-voltage vacuum feed master switch 7, after second low-voltage vacuum feed master switch 8 all closes a floodgate and runs, the end of incoming cables U0 of the first low voltage vacuum circuit breaker for permanent 9 and the second low voltage vacuum circuit breaker for permanent 10, V0, W0 and U1, V1, W1 terminal obtains electric, first power transformer T1 and second source transformer T2 obtains electric, first intelligent feeder protection equipment ZB1 and the second intelligent feeder protection equipment ZB2 obtains electric work, between communication connect, if at this moment the first low voltage vacuum circuit breaker for permanent 9 closes a floodgate and runs, then the first intelligent feeder protection equipment ZB1, second intelligent feeder protection equipment ZB2, first low-voltage vacuum feed master switch 7, second low-voltage vacuum feed master switch 8 all obtains the information that the first low voltage vacuum circuit breaker for permanent 9 combined floodgate runs, at this moment the second intelligent feeder protection equipment ZB2 send instruction forbid second low voltage vacuum circuit breaker for permanent 10 close a floodgate run, first low voltage vacuum circuit breaker for permanent 9, second low voltage vacuum circuit breaker for permanent 10 enters electrical interlocks, guarantee can only run by a low voltage vacuum circuit breaker for permanent combined floodgate.
If at this moment the first low voltage vacuum circuit breaker for permanent 9 closes a floodgate and runs, but the first low voltage vacuum circuit breaker for permanent 9 load side has fault, then the first intelligent feeder protection equipment ZB1 sends instruction, first low voltage vacuum circuit breaker for permanent 9 fault trip, first intelligent feeder protection equipment ZB1 failure locking, first intelligent feeder protection equipment ZB1, the second intelligent feeder protection equipment ZB2 communication information pass mutually simultaneously, and the second intelligent feeder protection equipment ZB2 continues to send instruction and forbids that the second low voltage vacuum circuit breaker for permanent 10 combined floodgate runs; if at this moment the first low voltage vacuum circuit breaker for permanent 9 closes a floodgate and runs, above-mentioned first low voltage vacuum circuit breaker for permanent 9 mains side has fault, then the first low-voltage vacuum feed master switch 7 fault trip, first intelligent feeder protection equipment ZB1 power failure tripping, but the first intelligent feeder protection equipment ZB1 can delay working 3 ~ 5 seconds after dead electricity, at this moment the first intelligent feeder protection equipment ZB1 and the first low-voltage vacuum feed master switch 7 communication, read the first low-voltage vacuum feed master switch 7 trip front state and tripping operation after on off state, and the first intelligent feeder protection equipment ZB1 and the second intelligent feeder protection equipment ZB2 communication information pass mutually, second intelligent feeder protection equipment ZB2 have received the state information of the first intelligent feeder protection equipment ZB1 and the first low-voltage vacuum feed master switch 7, second intelligent feeder protection equipment ZB2 is by built-in programmed logic, judgement is that the first low voltage vacuum circuit breaker for permanent 9 tripping operation is that mains side has fault but not the first low voltage vacuum circuit breaker for permanent 9 load side has fault, at this moment the second intelligent feeder protection equipment ZB2 sends instruction and controls the second low voltage vacuum circuit breaker for permanent 10 combined floodgate operation, even if the first colliery high voltage source 1 failture evacuation restores electricity, at this moment the first low voltage vacuum circuit breaker for permanent 9 electric after also enter electrical interlocks with the second low voltage vacuum circuit breaker for permanent 10, ensure that the first low voltage vacuum circuit breaker for permanent 9 and the second low voltage vacuum circuit breaker for permanent 10 can only have one to close a floodgate and run, the output thus the switching completing power supply is powered.
If at this moment the first low voltage vacuum circuit breaker for permanent 9 closes a floodgate and runs, above-mentioned first low-voltage vacuum feed master switch 7 source-side fault causes the first mining high-explosive switch 3 fault trip, or fault-free but the first mining high-explosive switch 3 power failure tripping, at this moment the first intelligent feeder protection equipment ZB1 delay working 3 ~ 5 seconds after dead electricity, at this moment the first intelligent feeder protection equipment ZB1 and the first low-voltage vacuum feed master switch 7 communication, read the first low-voltage vacuum feed master switch 7 on off state, and the first intelligent feeder protection equipment ZB1 and the second intelligent feeder protection equipment ZB2 communication information pass mutually, second intelligent feeder protection equipment ZB2 have received the state information of the first intelligent feeder protection equipment ZB1 and the first low-voltage vacuum feed master switch 7, second intelligent feeder protection equipment ZB2 is by built-in programmed logic, judgement is the first low voltage vacuum circuit breaker for permanent 9 mains side power-off tripping operation, at this moment the second intelligent feeder protection equipment ZB2 sends instruction and controls the second low voltage vacuum circuit breaker for permanent 10 combined floodgate operation, even if the first colliery high voltage source 1 failture evacuation restores electricity, at this moment the first low voltage vacuum circuit breaker for permanent 9 electric after also enter electrical interlocks with the second low voltage vacuum circuit breaker for permanent 10, ensure that the first low voltage vacuum circuit breaker for permanent 9 and the second low voltage vacuum circuit breaker for permanent 10 can only have one to close a floodgate and run, the output thus the switching completing power supply is powered.
If at this moment the first low voltage vacuum circuit breaker for permanent 9 closes a floodgate and runs, when pressing stop botton, first low voltage vacuum circuit breaker for permanent 9 separating brake, then the first low-voltage vacuum feed master switch 7 and the first intelligent feeder protection equipment ZB1 communication, first intelligent feeder protection equipment ZB1 and the second intelligent feeder protection equipment ZB2 communication information pass mutually, intelligence feeder protection equipment ZB2 have received the state information of the first intelligent feeder protection equipment ZB1 and the first low-voltage vacuum feed master switch 7, second intelligent feeder protection equipment ZB2 is by built-in programmed logic, judge the first low voltage vacuum circuit breaker for permanent 9 fault-free or active separating brake, at this moment the second intelligent feeder protection equipment ZB2 sends instruction and controls the second low voltage vacuum circuit breaker for permanent 10 combined floodgate operation, the automatic switchover completing power supply exports, if at this moment the first low voltage vacuum circuit breaker for permanent 9 closes a floodgate and runs, when pressing stop botton, first low voltage vacuum circuit breaker for permanent 9 separating brake, at this moment do not need the second low voltage vacuum circuit breaker for permanent 10 to close a floodgate to run, namely the automatic switchover of power supply is not needed to export, then at the first intelligent feeder protection equipment ZB1, be " manually " pattern by " manual/auto " menu setting in the menu of the second intelligent feeder protection equipment ZB2, at this moment permanent magnetism feed interconnection switch then no longer includes power supply automatic switchover output function, described permanent magnetism feed interconnection switch is under " manually " pattern, if at this moment by U2, V2, W2 and U3, V3, W3 terminal and binding post L1, L2, L3 disconnects, then permanent magnetism feed interconnection switch is just equivalent to the Flameproof intrinsically safe vacuum and permanent magnet feeding switch of two, can independently use.
Above-mentioned is the state under running if the first low voltage vacuum circuit breaker for permanent 9 closes a floodgate, in like manner run if the second low voltage vacuum circuit breaker for permanent 10 closes a floodgate, all logic working states too, that is the first low voltage permanent magnetic vacuum feed leg of permanent magnetism feed interconnection switch and the second low voltage permanent magnetic vacuum feed leg are regardless of primary and secondary, are peer-to-peers.
Described first intelligent feeder protection equipment ZB1 comprises the first power subsystem 11, first output unit 12, first processor unit 13 and the first communication unit 15, described first processor unit 13 respectively with the first power subsystem 11, first output unit 12 is connected with the first communication unit 15, described second intelligent feeder protection equipment ZB2 comprises second source unit 16, second output unit 17, second processor unit 18 and the second communication unit 20, described second processor unit 18 respectively with second source unit 16, second output unit 17 is connected with the second communication unit 20, described first power subsystem 11 is connected with the leading-out terminal of the first power transformer T1, described first output unit 12 is connected with the first control end of the first low voltage vacuum circuit breaker for permanent 9, described first communication unit 15 is connected with the communication terminal of the second communication unit 20 with the first low-voltage vacuum feed master switch 7 respectively, described second source unit 16 is connected with the leading-out terminal of second source transformer T2, described second output unit 17 is connected with the first control end of the second low voltage vacuum circuit breaker for permanent 10, described second communication unit 20 is connected with the communication terminal of the second low-voltage vacuum feed master switch 8, described first intelligent feeder protection equipment ZB1 also comprises the first display 14, described first display 14 is connected with first processor unit 13, described second intelligent feeder protection equipment ZB2 also comprises second display 19, and described second display 19 is connected with the second processor unit 18, the end of incoming cables of described first power transformer T1 is also connected with the leading-out terminal of the first low-voltage vacuum feed master switch 7 by binding post U0, V0, W0 after connecing the end of incoming cables of the first low voltage vacuum circuit breaker for permanent 9, the end of incoming cables of described second source transformer T2 is also connected with the leading-out terminal of the second low-voltage vacuum feed master switch 8 by binding post U1, V1, W1 after connecing the end of incoming cables of the second low voltage vacuum circuit breaker for permanent 10, described binding post U0, V0, W0, U2, V2, W2 is arranged in an independent anti-explosion box body, described binding post U1, V1, W1, U3, V3, W3 is arranged in an independent anti-explosion box body, described binding post L1, L2, the public shell wall that L3 is arranged on above-mentioned two explosion-proof wiring casings respectively can and U2, V2, W2 and U3, V3, W3 is connected by flexible conductor, described first low voltage vacuum circuit breaker for permanent 9, first intelligent feeder protection equipment ZB1, the first low voltage permanent magnetic vacuum feed leg that first power transformer T1 forms is installed concentratedly in an independent anti-explosion box body, described second low voltage vacuum circuit breaker for permanent 10, second intelligent feeder protection equipment ZB2, the second low voltage permanent magnetic vacuum feed leg that second source transformer T2 forms is installed concentratedly in an independent anti-explosion box body, described anti-explosion box body meets the requirement of coal mine flame-proof intrinsic safety type equipment, above-mentioned four explosion-proof wiring box Combination Welding are arranged on a public explosion-resistant enclosure dragging sled upper formation low pressure double loop, colliery duplicate supply permanent magnetism feed interconnection switch circuit together, and above-mentioned explosion-resistant enclosure meets the requirement of coal mine flame-proof intrinsic safety type equipment, described first intelligent feeder protection equipment ZB1 is connected with the second intelligent feeder protection equipment ZB2 by CAN communication line, the communication terminal of described first low-voltage vacuum feed master switch 7 is connected with the first intelligent feeder protection equipment ZB1 by RS485 connection, the communication terminal of described second low-voltage vacuum feed master switch 8 is connected with the second intelligent feeder protection equipment ZB2 by RS485 connection, described first colliery high voltage source 1 and the second colliery high voltage source 2 are 6KV high voltage source, and described first colliery high voltage source 1 and the second colliery high voltage source 2 are 10KV high voltage source.
The present invention detection promptly and accurately can judge the operating state of permanent magnetism feed interconnection switch, control the on/off switch operating state of the first low voltage vacuum circuit breaker for permanent 9, second low voltage vacuum circuit breaker for permanent 10, ensure continuity that the common load output end power of the first low voltage vacuum circuit breaker for permanent 9, second low voltage vacuum circuit breaker for permanent 10 powers, fail safe; If load side fault trip is shut down, forbid that loop switch closes a floodgate, secondary failure is avoided to damage, the dead electricity if one of them source-side fault dead electricity or higher level trip, switching circuit closes a floodgate, the safety in production that the power supply of another electric power loop exports as colliery is brought guarantee, and whole circuit structure is succinct, easy to install, cost is lower, practical, reach the object of Safety of Coal Mine Production, there is outstanding substantive distinguishing features and significant progress; By reference to the accompanying drawings embodiments of the invention are explained in detail above, but the present invention is not limited to above-described embodiment, in the ken that those of ordinary skill in the art possess, also can makes various change under the prerequisite not departing from present inventive concept.
Claims (10)
1. colliery low pressure double loop duplicate supply permanent magnetism feed interconnection switch operating circuit, comprises the first electric power loop, second source loop and permanent magnetism feed interconnection switch, is characterized in that: described first electric power loop comprises the first colliery high voltage source (1), first mining high-explosive switch (3), first flameproof dry type transformer (5) and the first low-voltage vacuum feed master switch (7), described second source loop comprises the second colliery high voltage source (2), second mining high-explosive switch (4), second flameproof dry type transformer (6) and the second low-voltage vacuum feed master switch (8), described permanent magnetism feed interconnection switch comprises the first low voltage permanent magnetic vacuum feed leg, second low voltage permanent magnetic vacuum feed leg and binding post L1, L2, L3, described first low voltage permanent magnetic vacuum feed leg comprises the first low voltage vacuum circuit breaker for permanent (9), first power transformer T1, first intelligent feeder protection equipment ZB1 and binding post U2, V2, W2, described second low voltage permanent magnetic vacuum feed leg comprises the second low voltage vacuum circuit breaker for permanent (10), second source transformer T2, second intelligent feeder protection equipment ZB2 and binding post U3, V3, W3,
The carrying out of described first low-voltage vacuum feed master switch (7) is held and is connected in series the first flameproof dry type transformer (5) successively and is connected with the first colliery high voltage source (1) afterwards with the first mining high-explosive switch (3), the communication terminal of described first low-voltage vacuum feed master switch (7) is connected with the first intelligent feeder protection equipment ZB1, described first intelligent feeder protection equipment ZB1 is also connected with the leading-out terminal of the first power transformer T1 with the first control end of the first low voltage vacuum circuit breaker for permanent (9) respectively, the end of incoming cables of described first power transformer T1 is also connected with the leading-out terminal of the first low-voltage vacuum feed master switch (7) after connecing the end of incoming cables of the first low voltage vacuum circuit breaker for permanent (9), the leading-out terminal of described first low voltage vacuum circuit breaker for permanent (9) and binding post U2, V2, W2 is connected, the carrying out of described second low-voltage vacuum feed master switch (8) is held and is connected in series the second flameproof dry type transformer (6) successively and is connected with the second colliery high voltage source (2) afterwards with the second mining high-explosive switch (4), the communication terminal of described second low-voltage vacuum feed master switch (8) is connected with the second intelligent feeder protection equipment ZB2, described second intelligent feeder protection equipment ZB2 is also connected with the leading-out terminal of second source transformer T2 with the first control end of the second low voltage vacuum circuit breaker for permanent (10) respectively, the end of incoming cables of described second source transformer T2 is also connected with the leading-out terminal of the second low-voltage vacuum feed master switch (8) after connecing the end of incoming cables of the second low voltage vacuum circuit breaker for permanent (10), the leading-out terminal of described second low voltage vacuum circuit breaker for permanent (10) and binding post U3, V3, W3 is connected, second control end of described first low voltage vacuum circuit breaker for permanent (9) is connected with the second intelligent feeder protection equipment ZB2, second control end of described second low voltage vacuum circuit breaker for permanent (10) is connected with the first intelligent feeder protection equipment ZB1, described first intelligent feeder protection equipment ZB1 also feeder protection equipment ZB2 intelligent with second is connected, and described binding post U2, V2, W2 are all connected with binding post L1, L2, L3 with binding post U3, V3, W3.
2. low pressure double loop, colliery according to claim 1 duplicate supply permanent magnetism feed interconnection switch operating circuit, it is characterized in that: described first intelligent feeder protection equipment ZB1 comprises the first power subsystem (11), first output unit (12), first processor unit (13) and the first communication unit (15), described first processor unit (13) respectively with the first power subsystem (11), first output unit (12) is connected with the first communication unit (15), described second intelligent feeder protection equipment ZB2 comprises second source unit (16), second output unit (17), second processor unit (18) and the second communication unit (20), described second processor unit (18) respectively with second source unit (16), second output unit (17) is connected with the second communication unit (20), described first power subsystem (11) is connected with the leading-out terminal of the first power transformer T1, described first output unit (12) is connected with the first control end of the first low voltage vacuum circuit breaker for permanent (9), described first communication unit (15) is connected with the communication terminal of the second communication unit (20) with the first low-voltage vacuum feed master switch (7) respectively, described second source unit (16) is connected with the leading-out terminal of second source transformer T2, described second output unit (17) is connected with the first control end of the second low voltage vacuum circuit breaker for permanent (10), described second communication unit (20) is connected with the communication terminal of the second low-voltage vacuum feed master switch (8).
3. low pressure double loop, colliery according to claim 2 duplicate supply permanent magnetism feed interconnection switch operating circuit; it is characterized in that: described first intelligent feeder protection equipment ZB1 also comprises the first display (14); described first display (14) is connected with first processor unit (13); described second intelligent feeder protection equipment ZB2 also comprises second display (19), and described second display (19) is connected with the second processor unit (18).
4. low pressure double loop, colliery according to claim 1 duplicate supply permanent magnetism feed interconnection switch operating circuit, is characterized in that: the end of incoming cables of described first power transformer T1 is also connected with the leading-out terminal of the first low-voltage vacuum feed master switch (7) by binding post U0, V0, W0 after connecing the end of incoming cables of the first low voltage vacuum circuit breaker for permanent (9).
5. low pressure double loop, colliery according to claim 1 duplicate supply permanent magnetism feed interconnection switch operating circuit, is characterized in that: the end of incoming cables of described second source transformer T2 is also connected with the leading-out terminal of the second low-voltage vacuum feed master switch (8) by binding post U1, V1, W1 after connecing the end of incoming cables of the second low voltage vacuum circuit breaker for permanent (10).
6. low pressure double loop, colliery according to claim 1 duplicate supply permanent magnetism feed interconnection switch operating circuit, is characterized in that: described first intelligent feeder protection equipment ZB1 is connected with the second intelligent feeder protection equipment ZB2 by CAN communication line.
7. low pressure double loop, colliery according to claim 1 duplicate supply permanent magnetism feed interconnection switch operating circuit, is characterized in that: the communication terminal of described first low-voltage vacuum feed master switch (7) is connected with the first intelligent feeder protection equipment ZB1 by RS485 connection.
8. low pressure double loop, colliery according to claim 1 duplicate supply permanent magnetism feed interconnection switch operating circuit, is characterized in that: the communication terminal of described second low-voltage vacuum feed master switch (8) is connected with the second intelligent feeder protection equipment ZB2 by RS485 connection.
9. low pressure double loop, colliery according to claim 1 duplicate supply permanent magnetism feed interconnection switch operating circuit, is characterized in that: described first colliery high voltage source (1) and the second colliery high voltage source (2) are 6KV high voltage source.
10. low pressure double loop, colliery according to claim 1 duplicate supply permanent magnetism feed interconnection switch operating circuit, is characterized in that: described first colliery high voltage source (1) and the second colliery high voltage source (2) are 10KV high voltage source.
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