CN102054632A - Split-phase type intelligent low-voltage double-breakpoint integrated electrical appliance with quick electromagnetism repulsive force mechanism - Google Patents
Split-phase type intelligent low-voltage double-breakpoint integrated electrical appliance with quick electromagnetism repulsive force mechanism Download PDFInfo
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Abstract
The invention relates to a split-phase type intelligent low-voltage double-breakpoint integrated electrical appliance with a quick electromagnetism repulsive force mechanism. The integrated electrical appliance provided by the invention comprises three independent single-phase double-breakpoint contact head AC (alternating current) contactors, the quick electromagnetism repulsive force mechanism and an intelligent control and protection system, wherein the detection and judgment of short-circuit fault at the early stage can be realized; an actuating mechanism can be released quickly under the action of the quick electromagnetism repulsive force mechanism; the circuit is disjuncted before the prospective current peak value of the short circuit is reached, the split-phase type intelligent low-voltage double-breakpoint integrated electrical appliance with the quick electromagnetism repulsive force mechanism has the characteristics of strong current-limiting function, higher short circuit disjunction capacity, operational reliability and stalization and the like; the frequent operation at normal loading can be realized; the split-phase type intelligent low-voltage double-breakpoint integrated electrical appliance with the quick electromagnetism repulsive force mechanism has the characteristics of zero-voltage switch-on and zero-current disjunction at the normal on-off circuit; and when malfunctions such as over-loading, phase failure, block running, overvoltage, undervoltage, inverse phase sequence and the like happen, the circuit can be disjuncted to realize protection.
Description
Technical field
The present invention relates to a kind of split-phase type intelligent low-pressure double break and put integrated electrical equipment, belong to the intelligent electric appliance field with the quick electromagnetic repulsive force mechanism.
Background technology
Short-circuit protection is the most important assurance of electric power system and the operation of automatic control system normal reliable; strong metering function and high breaking capacity are the key technologies of circuit breaker; realize that for low voltage control and protection integrated device strong metering function and high breaking capacity are very difficult; Chen Degui is published in " low-voltage electrical apparatus " 2008 the 9th phases progress of protection switch electrical equipment " control with " literary composition and has introduced intelligent CPS(control and protection switch electrical equipment) latest developments; in the nineties in last century; France Schneider company releases Integral series CPS; the domestic KB0 series of also having developed; main contact adopts bridge architecture, relies on to impact the strong metering function of electromagnet acquisition.Enter the new century, Schneider company releases TeSys U series CPS, it has circuit breaker, contactor and motor protection function, the shared contact system of circuit breaker and contactor, the operating mechanism of circuit breaker and the electromagnet of contactor can be operated the switching of moving contact by baffle plate, circuit breaker relies on the contact electrodynamic repulsion force to carry out current limliting, be to adopt impact electromagnet or contact electrodynamic repulsion force all to improve than the breaking speed of conventional circuit breaker, but adopt impact electromagnet or contact electrodynamic repulsion force still to have the fast inadequately problem of actuating mechanism breaking speed, can't satisfy the requirement of strong intelligent grid, what institutes such as Zhang Peiming obtained that patent of invention " combined type intelligent alternating-current control and protector " (patent No. 200510125294.1) adopts three platform independent exchanges control and protector electromagnetic mechanism, the interchange control of three platform independent and protector contact arc-extinguishing device are realized near three-phase voltage connection zero point; Requiring normal disjunction or transshipping, the phase failure, stall, overvoltage during fault such as under voltage, phase sequence are anti-, can be exactly opened during near zero passage at three-phase current, makes the breaking arc energy still less, can realize that few arc or non-arc breaking are disconnected; When short trouble takes place; contact can be opened fast; cutting-off of short-circuit electric current; the slow decay of magnetic flux caused the actuating mechanism breaking speed very slow when but this structure discharged owing to electromagnetic mechanism; contact is very slow to be opened; breaking capacity is very weak; for circuit breaker; after short trouble takes place; produce electric arc after contact is opened immediately, the formation of electric arc plays metering function to the short trouble circuit, therefore; the moment that contact is opened is vital for improving breaking capacity; contact is opened more early, and its breaking capacity is big more, for having contactor; the low voltage control of motor protector and circuit breaker function and protection integrated device; must guarantee that short trouble the back contact takes place opens and constantly significantly shift to an earlier date, and increase the contact gap with the speed that is exceedingly fast
Summary of the invention
The purpose of patent of the present invention just provides a kind of split-phase type intelligent low-pressure double break with the quick electromagnetic repulsive force mechanism and puts integrated electrical equipment; when this electrical equipment takes place at short trouble; contact is opened under the quick electromagnetic repulsive force mechanism hits fast; the double break contact structure has increased clearance between open contacts; the electric arc that elongates more helps limiting short-circuit current; U type stationary contact bridge has increased contact system loop electric power; make electric arc enter arc quenching system rapidly; be implemented in and cut-off circuit before short circuit prospective current peak value arrives; by quick electromagnetic repulsive force mechanism and contactor body electromagnetic mechanism; contact system double break point; the electrodynamic common cooperation of U type stationary contact bridge; the realization contact is opened contact fast under the control of Based Intelligent Control and protection system; produce strong metering function; has very strong metering function; characteristics such as high breaking capacity and reliable and stable work; frequent operation when it can realize normal load; having no-voltage when normal on-off circuit connects; the characteristics of Zero current disjunction; transshipping; the phase failure; stall; overvoltage; under voltage; during faults such as phase sequence is anti-, can divide deenergizing to realize protection.
The purpose of patent of the present invention is to realize like this; it comprises the single-phase double break contact A.C. contactor of three platform independent; the quick electromagnetic repulsive force mechanism; Based Intelligent Control and protection system; it is characterized in that; the split-phase type intelligent low-pressure double break of described band quick electromagnetic repulsive force mechanism is put the corresponding phase double break contact arc-control device of every single-phase double break contact A.C. contactor electromagnetic mechanism of integrated electrical equipment; three current sensors are enclosed within respectively on the U type stationary contact bridge of three single-phase double break contact A.C. contactor double break contact arc-control devices; the electric capacity of quick electromagnetic repulsive force mechanism is received power supply through first electronic switch; one end of electric capacity connects an end of quick electromagnetic repulsive force mechanism plate coil through second electronic switch; the other end of electric capacity and the quick electromagnetic repulsive force mechanism plate coil other end join; parallel placement one metal dish in the top of plate coil; metal dish hits bar by one and withstands three single-phase double break contact A.C. contactors simultaneously respectively and be in movable contact bridge under the closure state; the output of Based Intelligent Control and protection system connects the electromagnetic mechanism coil of single-phase double break contact A.C. contactor of three platform independent and first electronic switch of quick electromagnetic repulsive force mechanism respectively; the control end of second electronic switch, the output of three current transformers are received three current signal inputs of Based Intelligent Control and protection system respectively.
Quick electromagnetic mechanism does not work when normally moving on-off circuit; only rely on Based Intelligent Control and protection system to be switched on or switched off the single-phase double break contact A.C. contactor electromagnetic mechanism of three platform independent; this moment, the split-phase type intelligent low-pressure double break Based Intelligent Control and the protection system of putting integrated electrical equipment of this band quick electromagnetic repulsive force mechanism carved the single-phase double break contact A.C. contactor electromagnetic mechanism coil current of connection three platform independent in due course; the contact that can guarantee the single-phase double break contact A.C. contactor contact arc-extinguishing device of three platform independent is connected near zero point at three-phase voltage respectively exactly; requiring normal disjunction or transshipping; the phase failure; stall; overvoltage; under voltage; during faults such as phase sequence is anti-; Based Intelligent Control and protection system are carved the single-phase double break contact A.C. contactor electromagnetic mechanism coil current that cuts off three platform independent in due course; can guarantee that three contacts that exchange control and protector contact arc-extinguishing device open during near zero passage at three-phase current respectively exactly; this electrical equipment is after bringing into operation; first electronic switch that Based Intelligent Control and protection system trigger the quick electromagnetic repulsive force mechanism immediately makes the electric capacity of quick electromagnetic repulsive force mechanism in charging rapidly under the power supply effect after the rectification; electric capacity stops charging after being full of electric charge voluntarily; if the fault of being short-circuited; Based Intelligent Control and protection system are judged second electronic switch that triggers the quick electromagnetic repulsive force mechanism after short trouble takes place immediately; turn-off the single-phase double break contact A.C. contactor electromagnetic mechanism coil current of three platform independent simultaneously; the electric capacity of quick electromagnetic repulsive force mechanism is fast to the very little plate coil discharge of the thick inductance in the few line of number of turn footpath; greatly climbing and huge discharging current are producing eddy current in the parallel placed metal dish above the plate coil; the eddy current direction that produces in the discharging current of plate coil and the copper dish is opposite; make copper dish rapid movement under powerful electrodynamic repulsion force effect; and hit three single-phase double break contact A.C. contactors fast and be in movable contact bridge under the closure state by hitting bar; the single-phase double break contact A.C. contactor electromagnetic mechanism of three platform independent that discharge with contact system loop electric power and the contact electrodynamic repulsion force is reasonable cooperate under; contact opened with high speed and add the big contact gap fast; realize strong short trouble metering function; fast cut-off circuit; the double break contact structure has increased clearance between open contacts; the electric arc that elongates more helps limiting short-circuit current; U type stationary contact bridge has increased contact system loop electric power; make electric arc enter arc quenching system rapidly; increase metering function, improved breaking capacity.
Description of drawings
Fig. 1 is the structural representation of patent of the present invention.
Fig. 2 is connected schematic block diagram for the Based Intelligent Control of patent of the present invention with the protection system circuit part.
Fig. 3 is the structural representation of every phase one cover quick electromagnetic repulsive force mechanism of patent of the present invention.
Fig. 4 is a copper dish eddy current repulsion variation relation curve chart in time.
Fig. 5 is a plate coil electric current variation relation curve chart in time.
Fig. 6 is contact characteristics of motion figure under the 6kA short circuit current.
Embodiment
Among Fig. 1:
Label declaration: A is the single-phase double break contact A.C. contactor of three platform independent; B is the quick electromagnetic repulsive force mechanism; C is Based Intelligent Control and protection system; E is the single phase alternating current (A.C.) contactor electromagnetic mechanism of three platform independent; D is the double break contact arc-control device; F is three current sensors, and D1 is the movable contact bridge, and D2 is a moving contact; D3 is a fixed contact; D4 is a U type stationary contact bridge, and B1 is for hitting bar, and B2 is the copper dish; B3 is a quick electromagnetic repulsive force mechanism plate coil; B4 is second electronic switch, and B5 is first electronic switch, and B6 is a power supply; B7 is the electric capacity of quick electromagnetic repulsive force mechanism; E1 is the moving iron core of electromagnetic mechanism of the single-phase double break contact A.C. contactor of three platform independent, and E2 is the electromagnetic mechanism coil of the single-phase double break contact A.C. contactor of three platform independent, and E3 is the electromagnetic mechanism fixed core of the single-phase double break contact A.C. contactor of three platform independent.
As can be seen from Figure 1, the split-phase type intelligent low-pressure double break of described band quick electromagnetic repulsive force mechanism is put the corresponding phase double break contact arc-control device of every single-phase double break contact A.C. contactor electromagnetic mechanism of integrated electrical equipment, three current sensors are enclosed within respectively on the U type stationary contact bridge of three single-phase double break contact A.C. contactor double break contact arc-control devices, the electric capacity of quick electromagnetic repulsive force mechanism is received power supply through first electronic switch, one end of electric capacity connects an end of quick electromagnetic repulsive force mechanism plate coil through second electronic switch, the other end of electric capacity and the quick electromagnetic repulsive force mechanism plate coil other end join, parallel placement one metal dish in the top of plate coil, be noted that in the present embodiment, we adopt the copper dish this metal dish, it also can be the aluminium dish, but not as limit; Described copper dish hits bar by one and withstands three single-phase double break contact A.C. contactors simultaneously respectively and be in movable contact bridge under the closure state; the output of Based Intelligent Control and protection system connects the electromagnetic mechanism coil of single-phase double break contact A.C. contactor of three platform independent and first electronic switch of quick electromagnetic repulsive force mechanism, the control end of second electronic switch respectively, and the output of three current transformers is received three current signal inputs of Based Intelligent Control and protection system respectively.
Quick electromagnetic mechanism does not work when normally moving on-off circuit; only rely on Based Intelligent Control and protection system to be switched on or switched off the single-phase double break contact A.C. contactor electromagnetic mechanism of three platform independent; this moment, the split-phase type intelligent low-pressure double break Based Intelligent Control and the protection system of putting integrated electrical equipment of this band quick electromagnetic repulsive force mechanism carved the single-phase double break contact A.C. contactor electromagnetic mechanism coil current of connection three platform independent in due course; the contact that can guarantee the single-phase double break contact A.C. contactor contact arc-extinguishing device of three platform independent is connected near zero point at three-phase voltage respectively exactly; requiring normal disjunction or transshipping; the phase failure; stall; overvoltage; under voltage; during faults such as phase sequence is anti-; Based Intelligent Control and protection system are carved the single-phase double break contact A.C. contactor electromagnetic mechanism coil current that cuts off three platform independent in due course; can guarantee that three contacts that exchange control and protector contact arc-extinguishing device open during near zero passage at three-phase current respectively exactly; this electrical equipment is after bringing into operation; the electronic switch 1 that Based Intelligent Control and protection system trigger the quick electromagnetic repulsive force mechanism immediately makes the electric capacity of quick electromagnetic repulsive force mechanism in charging rapidly under the power supply effect after the rectification; electric capacity stops charging after being full of electric charge voluntarily; if the fault of being short-circuited; Based Intelligent Control and protection system are judged second electronic switch that triggers the quick electromagnetic repulsive force mechanism after short trouble takes place immediately; turn-off the single-phase double break contact A.C. contactor electromagnetic mechanism coil current of three platform independent simultaneously; the electric capacity of quick electromagnetic repulsive force mechanism is fast to the very little plate coil discharge of the thick inductance in the few line of number of turn footpath; greatly climbing and huge discharging current produce eddy current in the copper dish of parallel placement above the plate coil; the eddy current direction that produces in the discharging current of plate coil and the copper dish is opposite; make copper dish rapid movement under powerful electrodynamic repulsion force effect; and hit three single-phase double break contact A.C. contactors fast and be in movable contact bridge under the closure state by hitting bar; the single-phase double break contact A.C. contactor electromagnetic mechanism of three platform independent that discharge with contact system loop electric power and the contact electrodynamic repulsion force is reasonable cooperate under; contact opened with high speed and add the big contact gap fast; realize strong short trouble metering function; fast cut-off circuit; the double break contact structure has increased clearance between open contacts; the electric arc that elongates more helps limiting short-circuit current; U type stationary contact bridge has increased contact system loop electric power; make electric arc enter arc quenching system rapidly; increase metering function, improved breaking capacity.
Among Fig. 2:
Label declaration: M is the high speed signal modulate circuit, N is a signal conditioning circuit, and H is a high speed mcu system, and G is a Single Chip Microcomputer (SCM) system, J is a main control computer, L is a telecommunication circuit, and X is strong exciting circuit, and Y is the low pressure holding circuit, V is three voltage transformers, F is three current transformers, and B is the quick electromagnetic repulsive force mechanism, and E2 is the electromagnetic mechanism coil of the single-phase double break contact A.C. contactor of three platform independent.
As can be seen from Figure 2, the split-phase type intelligent low-pressure double break of described band quick electromagnetic repulsive force mechanism is put integrated electrical equipment, the output signal end of gathering three voltage transformer V of three-phase power line voltage is received the voltage signal input of high speed signal modulate circuit M and signal conditioning circuit N respectively, the output signal end of three current transformer F is received the current signal input of high speed signal modulate circuit M and signal conditioning circuit N respectively, the voltage of high speed signal modulate circuit M, the current output signal end is received the voltage of high speed mcu system H respectively, the current signal input, the voltage of signal conditioning circuit N, the current output signal end is received the voltage of Single Chip Microcomputer (SCM) system G respectively, the current signal input, the signal output part of high speed mcu system H is received the signal input part of Single Chip Microcomputer (SCM) system G, the signal input part of the control signal output ends of main control computer J and telecommunication circuit L joins, the output of telecommunication circuit L is received the signal input end of Single Chip Microcomputer (SCM) system G, the status signal output of Single Chip Microcomputer (SCM) system G is received the input of telecommunication circuit L, the signal input part of the signal output part of telecommunication circuit L and main control computer J joins, first control signal output ends 1 of Single Chip Microcomputer (SCM) system G is received strong exciting circuit X control end, second control signal output ends 2 of Single Chip Microcomputer (SCM) system G is received the control end of low pressure holding circuit Y, the 3rd control signal output ends 3 of Single Chip Microcomputer (SCM) system G is received the electronic switch B5 control end of quick electromagnetic repulsive force mechanism B, the 4th control signal output ends 4 of Single Chip Microcomputer (SCM) system G is received the control end of the electronic switch B4 of quick electromagnetic repulsive force mechanism B, strong exciting circuit X, low pressure holding circuit Y joins with coil E2 respectively.
The output signal of three voltage transformers in service and three current transformers is respectively through the high speed signal modulate circuit, signal conditioning circuit is imported high speed mcu system respectively after handling, Single Chip Microcomputer (SCM) system, as the fault that is short-circuited, high speed mcu system carries out the short trouble earlier detection according to the short circuit current signal, after short trouble is confirmed as in judgement, control signal is imported Single Chip Microcomputer (SCM) system, Single Chip Microcomputer (SCM) system starts the quick electromagnetic repulsive force mechanism immediately, hit the movable contact bridge of the single-phase double break contact A.C. contactor of three platform independent fast, turn-off the low pressure holding circuit simultaneously, the electromagnetic mechanism coil blackout of the single-phase double break contact A.C. contactor of three platform independent, electromagnetic mechanism discharges, making the movable contact bridge drive moving contact fast opens, current limliting is cut off circuit rapidly, normal operating condition, Single Chip Microcomputer (SCM) system is controlled strong exciting circuit and low pressure holding circuit after receiving this appliance starting signal immediately, the electromagnetic mechanism coil of the single-phase double break contact A.C. contactor of three platform independent is switched on by strong excitatory program respectively, strong exciting circuit is connected three contactor dynamic/static contacts when this circuit no-voltage, sound little Impact energy closure unshakable in one's determination, finish the circuit task of connecting, after this Single Chip Microcomputer (SCM) system is turn-offed strong exciting circuit, contactor relies on the low pressure holding circuit to keep on-state, if Single Chip Microcomputer (SCM) system is received breaking signal, perhaps supply voltage decompression, under-voltage, perhaps overload appears in motor, the phase failure, stall, overvoltage, under voltage, during faults such as phase sequence is anti-, Single Chip Microcomputer (SCM) system control low pressure holding circuit realizes the dynamic/static contact Zero current disjunction of the single-phase double break contact A.C. contactor of three platform independent, and Single Chip Microcomputer (SCM) system is carried out two-way communication through telecommunication circuit and main control computer.
Among Fig. 3:
Label declaration: A is the single-phase double break contact A.C. contactor of three platform independent; B is the quick electromagnetic repulsive force mechanism; C is Based Intelligent Control and protection system; E is three single phase alternating current (A.C.) contactor electromagnetic mechanisms; D is three single phase alternating current (A.C.) contactor double break contact arc-control devices; F is three current sensors; D4 is the U type stationary contact bridge of three single phase alternating current (A.C.) contactor double break contact arc-control devices; B3 is a quick electromagnetic repulsive force mechanism plate coil; B2 is the copper dish; B1 is for hitting bar, and D1 is the movable contact bridge, and E2 is the electromagnetic mechanism coil of the single-phase double break contact A.C. contactor of three platform independent.
As shown in Figure 3; the split-phase type intelligent low-pressure double break of described band quick electromagnetic repulsive force mechanism is put integrated electrical equipment, and each all is with a cover quick electromagnetic repulsive force mechanism B mutually; a shared cover Based Intelligent Control and the protection system C of three-phase; three current sensor F of every corresponding phase double break contact arc-control device D of single phase alternating current (A.C.) contactor electromagnetic mechanism E are enclosed within respectively on the U type stationary contact bridge D4 of three single phase alternating current (A.C.) contactor double break contact arc-control device D; each self-capacitance B7 of three cover quick electromagnetic repulsive force mechanism B receives power supply B6 through electronic switch 1B5 separately; the end of electric capacity B7 connects the quick electromagnetic repulsive force mechanism end of plate coil B3 separately through another electronic switch 2B4 separately; the other end of each self-capacitance B7 and quick electromagnetic repulsive force mechanism the plate coil B3 other end separately join; the parallel placement in the top of plate coil is copper dish B2 separately; the copper dish withstands three single-phase double break contact A.C. contactors simultaneously respectively and is in the bridge of movable contact separately D1 under the closure state by hitting bar B1 separately; the output of Based Intelligent Control and protection system C meets the electromagnetic mechanism coil E2 of single-phase double break contact A.C. contactor of three platform independent and the electronic switch 1B5 of three cover quick electromagnetic repulsive force mechanisms respectively; the control end of electronic switch 2B4, the output of three current transformer F are received three current signal inputs of Based Intelligent Control and protection system C respectively.
Quick electromagnetic mechanism does not work when normally moving on-off circuit; only rely on Based Intelligent Control and protection system to be switched on or switched off the single-phase double break contact A.C. contactor electromagnetic mechanism of three platform independent; this moment, the split-phase type intelligent low-pressure double break Based Intelligent Control and the protection system of putting integrated electrical equipment of this band quick electromagnetic repulsive force mechanism carved the single-phase double break contact A.C. contactor electromagnetic mechanism coil current of connection three platform independent in due course; the contact that can guarantee the single-phase double break contact A.C. contactor contact arc-extinguishing device of three platform independent is connected near zero point at three-phase voltage respectively exactly; requiring normal disjunction or transshipping; the phase failure; stall; overvoltage; under voltage; during faults such as phase sequence is anti-; Based Intelligent Control and protection system are carved the single-phase double break contact A.C. contactor electromagnetic mechanism coil current that cuts off three platform independent in due course; can guarantee that three contacts that exchange control and protector contact arc-extinguishing device open during near zero passage at three-phase current respectively exactly; this electrical equipment is after bringing into operation; first electronic switch that Based Intelligent Control and protection system trigger three cover quick electromagnetic repulsive force mechanisms immediately makes the electric capacity of quick electromagnetic repulsive force mechanism in charging rapidly under the power supply effect after the rectification; electric capacity stops charging after being full of electric charge voluntarily; if the fault of being short-circuited; Based Intelligent Control and protection system are judged second electronic switch that triggers three cover quick electromagnetic repulsive force mechanisms after short trouble takes place immediately; turn-off the single-phase double break contact A.C. contactor electromagnetic mechanism coil current of three platform independent simultaneously; the electric capacity of three cover quick electromagnetic repulsive force mechanisms is fast to the very little discharge of plate coil separately of the thick inductance in the few line of number of turn footpath; greatly climbing and huge discharging current produce eddy current in the copper dish of parallel placement above the plate coil; the eddy current direction that produces in the discharging current of plate coil and the copper dish is opposite; make copper dish rapid movement under powerful electrodynamic repulsion force effect; and hit three single-phase double break contact A.C. contactors fast respectively and be in movable contact bridge under the closure state by hitting bar separately; the single-phase double break contact A.C. contactor electromagnetic mechanism of three platform independent that discharge with contact system loop electric power and the contact electrodynamic repulsion force is reasonable cooperate under; contact opened with high speed and add the big contact gap fast; realize strong short trouble metering function; fast cut-off circuit; the double break contact structure has increased clearance between open contacts; the electric arc that elongates more helps limiting short-circuit current; U type stationary contact bridge has increased contact system loop electric power; make electric arc enter arc quenching system rapidly; increase metering function, improved breaking capacity.
Analyze below in conjunction with the electromagnetic-field simulation parametric plot.See also Fig. 4 to Fig. 5, as seen from the figure, plate coil discharge impact electric current and copper dish eddy current repulsion peak value are very big, and climbing is very high, reaches in 0.15ms
Peak value.
Fig. 6 is at the moving displacement curve of copper dish under eddy current repulsion, electric power, spring counter-force, the comprehensive function of remanent magnetism suction by moving contact after hitting bar to hit moving contact, this curve description from the short trouble zero hour of the characteristics of motion (achievement that comprises the short trouble earlier detection of the morphological wavelet that the inventor proposes when contact is in a fully open position, the correct failure judgement of 0.2ms time of taking place just), this figure is peak value of short contact characteristics of motion when being 6kA; Table one is a contact run duration table under the 6kA short circuit current, and as seen, contact is opened fast under the effect of comprehensive function power from figure and table one, opens with increasing speed after opening, and therefore has very strong current limiting characteristic and very high short circuit breaking capacity.
| Capacitance (uF) | Pickup time (ms) | The contact displacement 1mm time (ms) | The contact displacement 5mm time (ms) |
| 2200 | 0.220 | 0.914 | 2.640 |
| 4700 | 0.220 | 0.746 | 1.832 |
| 10000 | 0.220 | 0.694 | 1.408 |
Table one: contact run duration table under the 6kA short circuit current
As seen, patent of the present invention compared with prior art can be based on the quick electromagnetic repulsive force mechanism when short trouble takes place, and rationally cooperate the fast shut-off short circuit current with contact system loop electric power and contact electrodynamic repulsion force with the single-phase double break contact A.C. contactor electromagnetic mechanism of three platform independent, have the metering function more much higher, have characteristics such as high breaking capacity and reliable and stable work than prior art.
Above-mentioned narration is to be preferred embodiment of the present invention.The skill person in this field is deserved to be in order to explanation the present invention but not in order to limit the patent right scope that the present invention was advocated to understand it.Its scope of patent protection when on accompanying claim and etc. same domain decide.All skill persons who is familiar with this field, in not breaking away from this patent spirit or scope, change of being done or retouching all belong to the equivalence of being finished under the disclosed spirit and change or design, and should be included in the following claim.
Claims (5)
1. the split-phase type intelligent low-pressure double break with the quick electromagnetic repulsive force mechanism is put integrated electrical equipment, it comprises the single-phase double break contact A.C. contactor (A) of three platform independent, quick electromagnetic repulsive force mechanism (B), Based Intelligent Control and protection system (C) is characterized in that: the split-phase type intelligent low-pressure double break of described band quick electromagnetic repulsive force mechanism is put the corresponding phase double break contact arc-control device (D) of every single-phase double break contact A.C. contactor electromagnetic mechanism of integrated electrical equipment (E); Three current sensors (F) are enclosed within respectively on the U type stationary contact bridge (D4) of three single-phase double break contact A.C. contactor double break contact arc-control devices (D); the electric capacity (B7) of quick electromagnetic repulsive force mechanism (B) is received power supply (B6) through first electronic switch (B5); one end of electric capacity (B7) connects an end of quick electromagnetic repulsive force mechanism plate coil (B3) through second electronic switch (B4); the other end of electric capacity (B7) and quick electromagnetic repulsive force mechanism plate coil (B3) other end join; parallel placement one metal dish in the top of plate coil (B2); metal dish hits bar (B1) by one and withstands three single-phase double break contact A.C. contactors simultaneously respectively and be in movable contact bridge (D1) under the closure state; the output of Based Intelligent Control and protection system (C) connects first electronic switch (B5) of electromagnetic mechanism coil (E2) and quick electromagnetic repulsive force mechanism of the single-phase double break contact A.C. contactor of three platform independent respectively; the control end of second electronic switch (B4), the output of three current transformers (F) are received three current signal inputs of Based Intelligent Control and protection system (C) respectively.
2. the split-phase type intelligent low-pressure double break of band quick electromagnetic repulsive force mechanism according to claim 1 is put integrated electrical equipment, it is characterized in that: the power supply (B6) of described quick electromagnetic repulsive force mechanism (B) is the DC power supply of AC power after rectification.
3. the split-phase type intelligent low-pressure double break of band quick electromagnetic repulsive force mechanism according to claim 1 is put integrated electrical equipment, it is characterized in that: the metal dish (B2) of described quick electromagnetic repulsive force mechanism (B) is copper dish or aluminium dish.
4. the split-phase type intelligent low-pressure double break of band quick electromagnetic repulsive force mechanism according to claim 1 is put integrated electrical equipment, it is characterized in that: described Based Intelligent Control and protection system (C) comprise high speed signal modulate circuit (M), signal conditioning circuit (N), high speed mcu system (H), Single Chip Microcomputer (SCM) system (G), main control computer (J), telecommunication circuit (L), strong exciting circuit (X), low pressure holding circuit (Y); Gather three voltage transformers (V) of three-phase power line voltage; The output signal end of described three voltage transformers (V) is received the voltage signal input of high speed signal modulate circuit (M) and signal conditioning circuit (N) respectively, the output signal end of three current transformers (F) is received the current signal input of high speed signal modulate circuit (M) and signal conditioning circuit (N) respectively, the voltage of high speed signal modulate circuit (M), the current output signal end is received the voltage of high speed mcu system (H) respectively, the current signal input, the voltage of signal conditioning circuit (N), the current output signal end is received the voltage of Single Chip Microcomputer (SCM) system (G) respectively, the current signal input, the signal output part of high speed mcu system (H) is received the signal input part of Single Chip Microcomputer (SCM) system (G), and described master control computer (J) is connected with Single Chip Microcomputer (SCM) system (G) through telecommunication circuit (L); First control signal output ends (1) of described Single Chip Microcomputer (SCM) system (G) is received strong exciting circuit (X) control end, second control signal output ends (2) of Single Chip Microcomputer (SCM) system (G) is received the control end of low pressure holding circuit (Y), the 3rd control signal output ends (3) of Single Chip Microcomputer (SCM) system (G) is received first electronic switch (B5) control end of quick electromagnetic repulsive force mechanism (B), and the 4th control signal output ends (4) of Single Chip Microcomputer (SCM) system (G) is received the control end of second electronic switch (B4) of quick electromagnetic repulsive force mechanism (B); Described strong exciting circuit (X), low pressure holding circuit (Y) are joined with coil (E2) respectively.
5. the split-phase type intelligent low-pressure double break of band quick electromagnetic repulsive force mechanism according to claim 1 is put integrated electrical equipment; it is characterized in that: the split-phase type intelligent low-pressure double break of described band quick electromagnetic repulsive force mechanism is put integrated electrical equipment, and each all is with a cover quick electromagnetic repulsive force mechanism (B) mutually; a shared cover Based Intelligent Control and the protection system (C) of three-phase; the back takes place under the control of Based Intelligent Control and protection system (C) in short trouble, and the strike bar of the quick electromagnetic repulsive force mechanism (B) of each phase hits movable contact bridge separately respectively.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110007984 CN102054632B (en) | 2011-01-14 | 2011-01-14 | Split-phase type intelligent low-voltage double-breakpoint integrated electrical appliance with quick electromagnetism repulsive force mechanism |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110007984 CN102054632B (en) | 2011-01-14 | 2011-01-14 | Split-phase type intelligent low-voltage double-breakpoint integrated electrical appliance with quick electromagnetism repulsive force mechanism |
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| Publication Number | Publication Date |
|---|---|
| CN102054632A true CN102054632A (en) | 2011-05-11 |
| CN102054632B CN102054632B (en) | 2013-04-17 |
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| CN 201110007984 Active CN102054632B (en) | 2011-01-14 | 2011-01-14 | Split-phase type intelligent low-voltage double-breakpoint integrated electrical appliance with quick electromagnetism repulsive force mechanism |
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| CN102751116A (en) * | 2012-07-19 | 2012-10-24 | 福州大学 | Quick electromagnetic repulsion mechanism based on fault current energy and change rate and application of quick electromagnetic repulsion mechanism |
| CN102931032A (en) * | 2012-10-30 | 2013-02-13 | 福州大学 | Low-voltage AC/DC control and protection electrical appliance |
| CN103107507A (en) * | 2013-02-16 | 2013-05-15 | 福州大学 | Contactor integrating function and structure of electronic type protector |
| CN103441024A (en) * | 2013-08-18 | 2013-12-11 | 安徽硕日光电科技有限公司 | High-current output intelligent control device for electromagnetic thrust actuating mechanism |
| CN103457247A (en) * | 2013-08-09 | 2013-12-18 | 福州大学 | Multi-level full-range selective coordination and protection technology of low-voltage system |
| CN103489678A (en) * | 2013-10-15 | 2014-01-01 | 电光防爆科技（上海）有限公司 | High-voltage zero point switching load magnetic starter |
| CN107478889A (en) * | 2016-11-01 | 2017-12-15 | 西安交通大学 | A kind of quick identification device of electromagnetic type short circuit current and method |
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| CN103441024A (en) * | 2013-08-18 | 2013-12-11 | 安徽硕日光电科技有限公司 | High-current output intelligent control device for electromagnetic thrust actuating mechanism |
| CN103489678A (en) * | 2013-10-15 | 2014-01-01 | 电光防爆科技（上海）有限公司 | High-voltage zero point switching load magnetic starter |
| CN107478889A (en) * | 2016-11-01 | 2017-12-15 | 西安交通大学 | A kind of quick identification device of electromagnetic type short circuit current and method |
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