CN105281419A - Standby power supply automatic input system and validation method thereof - Google Patents
Standby power supply automatic input system and validation method thereof Download PDFInfo
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- CN105281419A CN105281419A CN201410307024.1A CN201410307024A CN105281419A CN 105281419 A CN105281419 A CN 105281419A CN 201410307024 A CN201410307024 A CN 201410307024A CN 105281419 A CN105281419 A CN 105281419A
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Abstract
The invention discloses a standby power supply automatic input system and a validation method thereof. The standby power supply automatic input system aims to solve the problems of a transformer substation adopting a single-bus sectional operation method of a low-voltage power supply system in factories and enterprises that: switching on/off loops of circuit breakers of the traditional standby power automatic switching device have no locking function, and safe operation of the power supply system is threatened tremendously by defects that an incoming line circuit breaker and a third circuit breaker are switched on and off by mistake manually in the practical production operation of the standby power automatic switching device.
Description
Technical field
The present invention relates to factory and enterprise electric substation sectionalized single busbar connection operational mode power supply backup and automatically drop into system and method, more particularly, relate to the automatic input coefficient of a kind of power supply backup and method of calibration thereof.
Background technology
Along with the development of industrial enterprise, more and more higher to the reliability requirement of electric power system, especially the sectionalized single busbar connection operational mode electric substation of Liang Hui supply line, power supply backup drops into automatically, and (inlet wire automatic throw-in equipment for subsequent use) is widely applied, when after main electrical breakdown, prepared auto restart action controls stand-by power supply to put into operation fast automatically, power supply capacity when great raising electrical network normally runs, ensure that reliability and the continuity of power supply, along with the development of electric power system, the function and position of automatic switching device of standby power supply more and more comes important.
Tradition prepared auto restart follows following principle substantially:
1), working bus bar decompression;
2), the circuit breaker that is connected with former working power of tripping, in order to avoid stand-by power supply He Zhong Library;
3), check that whether stand-by power supply is qualified, as met the demands, the circuit breaker that the working bus bar that closes is connected with auxiliary bus-bar power supply;
4), prepared auto restart is provided with after accelerated protection, and an action once.
See figures.1.and.2, in factory's practical application, the equipment association adopting duplicate supply or multi-power system to power is complicated, there is multiple operational mode, as sectionalized single busbar connection operation process mode, may be lead-in circuit breaker 1DL, lead-in circuit breaker 2DL closes, 3rd circuit breaker 3DL divides open shop, also may be that lead-in circuit breaker 1DL closes, 3rd circuit breaker 3DL closes, lead-in circuit breaker 2DL divide open shop, also may be that lead-in circuit breaker 2DL closes, 3rd circuit breaker 3DL closes, lead-in circuit breaker 1DL divide the operational modes such as open shop, if backup auto-activating device control principle design imprecision, the possibility of the electric power system power outage all caused causing prepared auto restart malfunction, particularly in actual production runs, or operating personnel's misoperation, cause and divide by mistake, falsely close circuit breaker, as separated lead-in circuit breaker 1DL or lead-in circuit breaker 2DL by mistake, cause prepared auto restart error starting, cause unnecessary electrical source exchange that the impact of responsible consumer moment dead electricity is produced, or miss conjunction the 3rd circuit breaker 3DL, because lead-in circuit breaker 1DL and line circuit breaker 2DL is all at closing position, electric power system is caused to form circulation, threaten the safe operation of electric power system, once the prepared auto restart malfunction occurred as above or artificial misoperation fault, all bring huge economic loss by production.
The existing patent backup auto-activating device (patent No.: 200620160573.1), this patent characteristic is: in sectionalized single busbar connection operational system, at power supply 1# inlet wire, power supply 2# installs voltage relay UX1 in end of incoming cables respectively, UX2 gets arbitrary phase voltage of inlet wire, voltage relay UM1 is set respectively on two sections of buses of system simultaneously, UM2 gets busbar voltage, (the two poles of the earth checkout voltage when one section of primary voltage and busbar voltage all lose, i.e. UX1, with no pressure or the UX2 of UM1, UM2 is with no pressure) be namely judged as this inlet wire fault, then backup auto-activating device action, automatic this incoming power of tripping switch, drop into Backup Power Switch simultaneously, recover the power supply of dead electricity bus.But the deficiency of this control mode is once there is motor-operating mechanism fault, the action accuracy of prepared auto restart and reliability are still difficult to meet need of production, and for people, for misoperation causes, prepared auto restart mistake is divided, mistake conjunction cannot carry out effective locking in actual production, still there is great safe operation risk in prepared auto restart.
The electric substation that prior art is run low-voltage power supply system list mother partition, after power loss recovers, prepared auto restart can perform tripping dead electricity circuit breaker, the back-up breaker that closes drops into the function of stand-by power supply, but prior art is divided at prepared auto restart by mistake, close by mistake and often there is no blocking function, in prepared auto restart actual production runs, still exist manually cause by mistake point lead-in circuit breaker and, the defect of conjunction the 3rd circuit breaker by mistake, threaten the safe operation of electric power system, so industrial enterprise occurs for avoiding backup auto-activating device misoperation, often by out of service for electric substation's prepared auto restart function.
Summary of the invention
Object of the present invention aims to provide the automatic input coefficient of a kind of power supply backup and method of calibration thereof, solves power supply miscarrying in prior art, moves back by mistake, control insecure problem.
According to the present invention, provide a kind of power supply backup automatic input coefficient, comprise three-phase bus, the first voltage relay, the second voltage relay, the first time-delay relay, the second time-delay relay, the 3rd time-delay relay, the 4th time-delay relay.First voltage relay and the second voltage relay comprise the first diverter switch and the second diverter switch respectively, and the first voltage relay and the second voltage relay are connected each circuitry phase of three-phase bus respectively.First diverter switch of the first voltage relay connects one end of the first time-delay relay, and the other end of the first time-delay relay connects zero line; Second diverter switch of the first voltage relay connects one end of the 3rd time-delay relay, and the other end of the 3rd time-delay relay connects zero line; First diverter switch of the second voltage relay connects one end of the second time-delay relay, and the other end of the second time-delay relay connects zero line; Second diverter switch of the second voltage relay connects one end of the 4th time-delay relay, and the other end of the 4th time-delay relay connects zero line.
According to one embodiment of the invention, also comprise circuit breaker, circuit breaker comprises closing coil, switching winding, co-bit, jumping position.Co-bit is all connected to bus with jumping position, and closing coil and switching winding are all connected to zero line.
According to one embodiment of the invention, the automatic input coefficient of power supply backup comprises three circuit breakers, is the first circuit breaker, the second circuit breaker and the 3rd circuit breaker respectively.
According to one embodiment of the invention, also comprise change over switch, first inlet wire sub-loop, second inlet wire sub-loop, contact sub-loop, first inlet wire sub-loop connects the first circuit breaker and forms the first inlet wire control loop, and the second inlet wire sub-loop connects the second circuit breaker and forms the second inlet wire control loop, and contact sub-loop connects the 3rd circuit breaker and forms contact control loop.First inlet wire control loop, the second inlet wire control loop and contact control loop are connected to bus by change over switch.
According to a further aspect in the invention, the method of calibration of the automatic input coefficient of a kind of power supply backup is also provided, comprise the following steps: step one, pull open higher level's mains switch of the first inlet wire control loop, make the first inlet wire control loop dead electricity, after power supply backup automatic input coefficient tripping first circuit breaker, the 3rd breaker closing, in-put of spare power supply runs, and now verifies that the first power supply backup entering control loop drops into working properly automatically; Step 2, pull open higher level's mains switch of the second inlet wire control loop, make the second inlet wire control loop dead electricity, after power supply backup automatic input coefficient tripping second circuit breaker, 3rd breaker closing, in-put of spare power supply runs, and now verifies that the second power supply backup entering control loop drops into working properly automatically.
According to one embodiment of the invention, also comprise step 3, under simulation normal operating condition, manual disconnection first lead-in circuit breaker, the second lead-in circuit breaker button, residing for first opening button of the first lead-in circuit breaker and the second lead-in circuit breaker, residing for loop, the second opening button, loop is in blocking, now verifies that the first lead-in circuit breaker and the second lead-in circuit breaker normally run.Step 4, under simulation normal operating condition, the 3rd switch knob of manual closing the 3rd circuit breaker, residing for the 3rd switch knob, loop is in blocking, and the 3rd circuit breaker keeps separating brake to run.
According to one embodiment of the invention, also comprise step 5, simulate the first lead-in circuit breaker and the second lead-in circuit breaker accident tripping, and after the 3rd breaker closing, 3rd opening button of manual disconnection the 3rd circuit breaker, residing for 3rd opening button, loop is in blocking, and checking the 3rd circuit breaker keeps adhesive running status.
Have employed technical scheme of the present invention, there is following beneficial effect:
1), by effective serial connection of each circuit-breaker status nodes of locations, make prepared auto restart realize logic more tight reliable, can effectively avoid because of people as misoperation causes the generation of prepared auto restart misoperation accident;
2), prepared auto restart control loop adopts circuit breaker position signal binode (jumping position, co-bit) to carry out locking, and control method is more reliable;
3), set up prepared auto restart function throwing, retreating function, facilitate the adjustment of electric substation's operational mode.
Accompanying drawing explanation
In the present invention, identical Reference numeral represents identical feature all the time, wherein:
Fig. 1 is that conventional power source backup drops into circuit diagram automatically;
Fig. 2 is that conventional power source backup drops into logic schematic diagram automatically;
Fig. 3 is that power supply backup of the present invention drops into circuit diagram automatically;
Fig. 4 is the voltage sample principle control chart that power supply backup of the present invention drops into circuit automatically;
Fig. 5 is the time relay control principle drawing that power supply backup of the present invention drops into circuit automatically;
Fig. 6 is the logic schematic diagram that power supply backup of the present invention drops into method automatically.
Embodiment
Technical scheme of the present invention is further illustrated below in conjunction with drawings and Examples.
According to present situation, the present invention, by the thinking to low-voltage power supply system prepared auto restart principle, proposes sectionalized single busbar connection operational mode electric substation prepared auto restart action blocking function, sets up prepared auto restart to drop into select with exit function by change over switch.
The object of the invention is to study a kind of safe, reliable, power control method that can effectively prevent power supply backup from automatically dropping into by mistake point, closing by mistake, for the electric substation of factory and enterprise low-voltage power supply system sectionalized single busbar connection operational mode, its traditional prepared auto restart divides at circuit breaker, closing circuit does not often have blocking function, in prepared auto restart actual production runs, there is the defect of manually dividing by mistake, closing lead-in circuit breaker and the 3rd circuit breaker, threaten the safe operation of electric power system greatly.
Circuit diagram analytic explanation:
As shown in Figure 3, power supply backup of the present invention automatically drops into circuit and comprises three-phase bus L1, L2, L3, zero line N, ground wire PE, inlet wire control loop that two-way is identical, i.e. the first inlet wire control loop, the second inlet wire control loop, a road contact control loop, the first voltage relay, the second voltage relay, the first time-delay relay T1, the second time-delay relay T2, the 3rd time-delay relay T3, the 4th time-delay relay T4, change over switch SA.
First inlet wire control loop connects the first circuit breaker 1DL by the first inlet wire sub-loop and is formed, and the second inlet wire control loop connects the second circuit breaker 2DL by the second inlet wire sub-loop and formed, and contact control loop is formed by getting in touch with sub-loop connection the 3rd circuit breaker 3DL.First inlet wire control loop, the second inlet wire control loop and contact control loop are connected to bus by change over switch SA.
First voltage relay and the second voltage relay comprise the first diverter switch KD1 and the second diverter switch KD2 respectively, and the first voltage relay and the second voltage relay are connected each circuitry phase of three-phase bus respectively.First diverter switch KD1 of the first voltage relay connects one end of the first time-delay relay T1, and the other end of the first time-delay relay T1 connects zero line; Second diverter switch KD2 of the first voltage relay connects one end of the 3rd time-delay relay T3, and the other end of the 3rd time-delay relay T3 connects zero line; First diverter switch KD1 of the second voltage relay connects one end of the second time-delay relay T2, and the other end of the second time-delay relay T2 connects zero line; Second diverter switch KD2 of the second voltage relay connects one end of the 4th time-delay relay T4, and the other end of the 4th time-delay relay T4 connects zero line.
First inlet wire control loop comprises the first switch knob SS1, the first closing coil Y1, the first circuit breaker 1DL, and wherein the first circuit breaker 1DL comprises the first co-bit AS1 and first jumping position HS1; Second inlet wire control loop comprises the second switch knob SS2, the second closing coil Y2, the second circuit breaker 2DL, and wherein the second circuit breaker 2DL comprises the second co-bit AS2 and second jumping position HS2; 3rd inlet wire control loop comprises the 3rd switch knob SS3, the 3rd closing coil Y3, the 3rd circuit breaker 3DL, and wherein the 3rd circuit breaker 3DL comprises the 3rd co-bit AS3 and the 3rd jumping position HS3.
Specifically, each circuit breaker internal includes closing coil, switching winding, co-bit, jumping position.Co-bit is all connected to bus with jumping position, and closing coil and switching winding are all connected to zero line.
In the first inlet wire control loop, after the second jumping position HS2 and the 3rd jumps position HS3 parallel connection, connect the first switch knob SS1 in one end, and the other end connects the first closing coil Y1, and the first switch knob SS1 is connected to bus; In the second inlet wire control loop, after the first jumping position HS1 and the 3rd jumps position HS3 parallel connection, connect the second switch knob SS2 in one end, and the other end connects the second closing coil Y2, and the second switch knob SS2 is connected to bus; In the 3rd inlet wire control loop, after the first jumping position HS1 and second jumps position HS2 parallel connection, one end series connection the 3rd switch knob SS3, the other end connects the 3rd closing coil Y3, and the 3rd switch knob SS3 is connected to bus.
In the first inlet wire control loop, second co-bit AS2 and second jumps position HS2 and connects, and in parallel with the series circuit that the 3rd co-bit AS3 and the 3rd jumps position HS3, the circuit on one side after parallel connection is connected to the 3rd time-delay relay T3, and the other end is connected to the first closing coil Y1.
In the second inlet wire control loop, first co-bit AS1 and first jumps position HS1 and connects, and in parallel with the series circuit that the 3rd co-bit AS3 and the 3rd jumps position HS3, the circuit on one side after parallel connection is connected to the 4th time-delay relay T4, and the other end is connected to the second closing coil Y2.
In the 3rd inlet wire control loop, second co-bit AS2 and second jumps position HS2 and connects, and it is in parallel with the series circuit that the first co-bit AS1 and first jumps position HS1, circuit on one side after parallel connection connects the parallel circuits of the first time-delay relay T1 and the second time-delay relay T2, and the other end is connected to the 3rd closing coil Y3.
First inlet wire control loop also comprises the first switch knob SS1, the first switching winding, and the first co-bit AS1 also comprises first node.First switch knob SS1 and first node of connecting after the first time-delay relay T1 parallel connection, the other end of first node connects the first switching winding.
Second inlet wire control loop also comprises the second switch knob SS2, the second switching winding, and the second co-bit AS2 also comprises Section Point.Second switch knob SS2 and Section Point of connecting after the second time-delay relay T2 parallel connection, the other end of Section Point connects the second switching winding.
3rd inlet wire control loop also comprises the 3rd switch knob SS3, the 3rd switching winding, and the 3rd co-bit AS3 also comprises the 3rd node.The series circuit of the 3rd switch knob SS3 the 3rd time-delay relay T3 and the 4th time-delay relay T4 in parallel, series connection the 3rd node after in parallel, the other end of the 3rd node connects the 3rd switching winding.
With reference to Fig. 3, Fig. 4 and Fig. 5, the present invention is directed to sectionalized single busbar connection operational mode low pressure electric substation, the technical characteristics that power supply backup drops into implementation method is automatically as follows:
1), by setting up prepared auto restart to drop into and exit function selective switchgear, prepared auto restart is under exit status, can people for carrying out lead-in circuit breaker 1DL, lead-in circuit breaker 2DL, and the 3rd any divide-shut brake handoff functionality of circuit breaker 3DL, can require to carry out according to actual production the adjustment work of the mother operational mode such as side by side; Under prepared auto restart puts state into operation, lead-in circuit breaker 1DL, lead-in circuit breaker 2DL, and the 3rd circuit breaker 3DL strict implement three closes two functions;
2), under prepared auto restart puts state into operation, by by lead-in circuit breaker 1DL, lead-in circuit breaker 2DL, and the 3rd the state position node (jump position node, co-bit node) of circuit breaker 3DL be linked in respective switch divide-shut brake loop respectively, and by the serial connection of each node, realize under incoming power normal operation, lead-in circuit breaker 1DL, 2DL closing circuit remains effective connection, thus can reliably avoid people to be that misoperation causes point lead-in circuit breaker 1DL or 2DL by mistake, eliminate the hidden danger of bus moment dead electricity prepared auto restart error starting;
3), for the 3rd closing circuit of circuit breaker, by effective serial connection of circuit breaker 1D1,2DL, 3DL state position node (jumping position, co-bit), realize after inlet wire 1DL or the tripping of inlet wire 2DL dead electricity and under two sections of corresponding buses or one section of bus have electric normal operating condition, the function that 3rd circuit breaker 3DL closing circuit reliably closes, namely only have Dang mono-road power loss and after respective circuit breakers tripping, alternate power autocast runs to two sections of bussed supplies;
4), for the 3rd brake division loop of circuit breaker, pressure decision node is had to be connected in series into sub-gate circuit by inlet wire one section being had pressure decision node and inlet wire two sections, namely when system power supply one and power supply two normally run, by lead-in circuit breaker 1DL, when lead-in circuit breaker 2DL closes respectively to one section of bus and two sections of bussed supplies, the sub-gate circuit of the 3rd circuit breaker 3DL remains connection, people can be effectively avoided to be that misoperation etc. causes 3DL to close by mistake, causing electric power system to form circulation threatens the hidden danger of the safe operation of electric power system to occur, simultaneously, when after arbitrary section of bus dead electricity, 3rd circuit breaker 3DL closes a floodgate by power supply backup automatically input action, 3rd circuit breaker 3DL sub-gate circuit disconnects simultaneously, guarantee that stand-by power supply can be close to dead electricity bussed supply,
5), lead-in circuit breaker 1DL, the shutting-brake control loop of lead-in circuit breaker 2DL and the 3rd circuit breaker 3DL all adopts goes here and there and connects respective circuit breakers two-position node (jumping position, co-bit), make prepared auto restart realize principle logic more tight, enhance the reliability that prepared auto restart function comes into operation.
With reference to Fig. 6, power supply backup automatic switching access control method of the present invention is as follows:
Prepared auto restart pattern out of service, namely under power supply state, the first circuit breaker remains adhesive, and the second circuit breaker remains adhesive, and the 3rd circuit breaker remains disconnection.
1) breaker closing control loop
A ﹑ lead-in circuit breaker 1DL closing circuit is linked into 1DL closing coil Y1 by switch knob SS1, serial connection " 2DL jumps position key (-HS2-) and jumps position key (-HS3-) with 3DL and connect ", namely only at 2DL and 3DL arbitrary circuit breaker in open position situation, just by switch knob SS1, circuit breaker 1DL is closed a floodgate;
B ﹑ lead-in circuit breaker 2DL closing circuit is linked into 2DL closing coil Y2 by switch knob SS2, serial connection " 1DL jumps position key (-HS1-) and jumps position key (-HS3-) with 3DL and connect ", namely only at 1DL and 3DL arbitrary circuit breaker in open position situation, just by switch knob SS2, circuit breaker 2DL is closed a floodgate;
C ﹑ lead-in circuit breaker 3DL closing circuit is linked into 3DL closing coil Y3 by switch knob SS3, serial connection " 1DL jumps position key (-HS1-) and jumps position key (-HS2-) with 2DL and connect ", namely only at 1DL and 2DL arbitrary circuit breaker in open position situation, just by switch knob SS3, circuit breaker 3DL is closed a floodgate.
2) breaker open operation control loop
A ﹑ lead-in circuit breaker 1DL sub-gate circuit judge closed node T1 by opening button ST1 and one section of decompression and after connecing, be connected in series 1DL co-bit node HS11 after be linked into 1DL switching winding F1;
B ﹑ lead-in circuit breaker 2DL sub-gate circuit judge closed node T2 by opening button ST2 and two sections of decompressions and after connecing, be connected in series 2DL co-bit node HS21 after be linked into 2DL switching winding F2;
C ﹑ the 3rd circuit breaker 3DL sub-gate circuit by opening button ST3 with (one section have press judge to close node T3 be connected in series two sections have to press judge to close node T4) and connect afterwards, be connected in series 3DL co-bit node HS31 after be linked into 3DL switching winding F3, namely when one section and two sections of power supplys normally run, the opening button of the 3rd circuit breaker 3DL sub-gate circuit remains by short circuit state, 3rd circuit breaker 3DL cannot close a floodgate, ensure that the risk of parallel running by mistake occurs system, ensure that the safe operation of system.
Prepared auto restart drops into automatic operational mode, and namely under power failure state, the first circuit breaker remains adhesive, and the second circuit breaker remains adhesive, and the 3rd circuit breaker reliably disconnects all the time.
1) breaker closing control loop
A ﹑ lead-in circuit breaker 1DL closing circuit by one section have pressure to judge time-delay relay node T3, autotomy drop into change over switch node SA, serial connection " 2DL nodes of locations (comprise and jump position co-bit :-HS2-AS2-) and 3DL nodes of locations (comprise and jump position co-bit :-HS3-AS3-) and connect " be linked into 1DL closing coil Y1, namely when power supply one under normal operating conditions, and 2DL and 3DL arbitrary circuit breaker is in open position situation, circuit breaker 1DL closes a floodgate by power supply backup automatically input action, and when power supply is normal, the circuit breaker 1DL comparatively 3DL that closes a floodgate has preoption;
B ﹑ lead-in circuit breaker 2DL closing circuit by two sections have pressure to judge time-delay relay node T4, autotomy drop into change over switch node SA, serial connection " 1DL nodes of locations (comprise and jump position co-bit :-HS1-AS1-) and 3DL nodes of locations (comprise and jump position co-bit :-HS3-AS3-) and connect " be linked into 2DL closing coil Y2, namely when power supply two under normal operating conditions, and 1DL and 3DL arbitrary circuit breaker is in open position situation, circuit breaker 2DL closes a floodgate by power supply backup automatically input action, and when power supply is normal, the circuit breaker 2DL comparatively 3DL that closes a floodgate has preoption;
C ﹑ the 3rd circuit breaker 3DL closing circuit judges time-delay relay node T1 by one section of decompression and connects after two sections of decompressions judge time-delay relay node T2, serial connection " 1DL nodes of locations (comprise and jump position co-bit :-HS1-AS1-) with 2DL nodes of locations (comprise and jump position co-bit :-HS2-AS2-) and connect " after be linked into 3DL closing coil Y3, namely when after power supply one or the arbitrary road power failure dead electricity of power supply two, backup auto-activating device is through time delay and after the complete tripping of pending fault line-breaker 1DL or 2DL, 3rd circuit breaker 3DL closes a floodgate, in-put of spare power supply is run, and when arbitrary fault loop power up normally runs, one section of decompression judges that a time-delay relay node T1 or two section decompression judges that time-delay relay node T2 opens, 3rd circuit breaker 3DL closing circuit disconnects, 3DL possesses separating brake condition, after power up normally runs, circuit breaker 1DL and the circuit breaker 2DL comparatively 3DL that closes a floodgate has preoption.
2) breaker open operation control loop
A ﹑ lead-in circuit breaker 1DL sub-gate circuit judge closed node T1 by opening button ST1 and one section of decompression and after connecing, be connected in series 1DL co-bit node HS11 after be linked into 1DL switching winding F1, namely when after one section of dead electricity, T1 point closes, sub-gate circuit leads to automatic tripping circuit breaker 1DL, for stand-by power supply come into operation (3DL combined floodgate) ready;
B ﹑ lead-in circuit breaker 2DL sub-gate circuit judge closed node T2 by opening button ST2 and two sections of decompressions and after connecing, be connected in series 2DL co-bit node HS21 after be linked into 2DL switching winding F2, namely when after two sections of dead electricity, T2 point closes, sub-gate circuit leads to automatic tripping circuit breaker 2DL, for stand-by power supply come into operation (3DL combined floodgate) ready;
C ﹑ the 3rd circuit breaker 3DL sub-gate circuit by opening button ST3 with " one section have press judge to close node T3 be connected in series two sections have to press judge to close node T4 " and after connecing, 3DL switching winding F3 is linked into after serial connection 3DL co-bit node HS31, namely when one section and two sections of power supplys normally run, and the 3rd circuit breaker 3DL is when being in closing position, 3DL sub-gate circuit is connected, the automatic tripping of prepared auto restart the 3rd circuit breaker 3DL, after arbitrary segment fault power up normally runs, (1DL and 2DL closes the original operational mode of the automatic switchback of prepared auto restart, system is in fanout operation state), simultaneously at normal operation mode, 3DL closing function is blocked and cannot closes a floodgate,
3) prepared auto restart meets after dropping into and automatically running: normal operating mode is power supply one and power supply binary fission running status, supply one section of bus and two sections of bussed supplies respectively, i.e. lead-in circuit breaker 1DL, 2DL is in running status, 3rd circuit breaker 3DL is in separately running status, when after arbitrary section of bus dead electricity, prepared auto restart is swift in motion the 3rd circuit breaker 3DL that to close after corresponding bus circuit breaker (1DL or 2DL) of tripping, drop into stand-by power supply, recover dead electricity bussed supply, when after dead electricity bus power up, prepared auto restart performs an action after tripping the 3rd circuit breaker 3DL, to close corresponding bus circuit breaker (1DL or 2DL), recovery normal operating mode is powered.
By the analysis to above main technical principle, known the present invention can effectively realize prepared auto restart function when arbitrary section of power failure, the node blocking function simultaneously increased all can ensure that circuit breaker three closes two functions under effectively can guaranteeing a prepared auto restart switch mode in office, under system normal operating condition, owing to set up point, closing locking function, can not because of people for misoperation causes the hidden danger of prepared auto restart error starting, improve prepared auto restart reliability of operation, ensure that the safe operation of electric power system;
The present invention also provides the method for calibration of the automatic input coefficient of a kind of power supply backup, specifically comprises following preparation and checking procedure:
1) installation instructions:
The present invention installs with finished product group and constructs, strict implement electric industry construction safety code during construction, and the live part that requirement may touch must reliably have a power failure, to guarantee work progress safety.
(1) first circuit breaker 1DL, 2DL, 3DL, change over switch SA, divide-shut brake button SS1, SS2, SS3, ST1, ST2, ST3 are installed in ac panel control cubicle, voltage relay KD1, KD2, the equipment such as the time relay T1, T2, T3, T4 and auxiliary relay AS1, AS2, AS3, HS1, HS2, HS3, HS11, HS21, HS31 fix position and carry out mark.
(2) 380V cable is fixed close to primary equipment (circuit breaker), carry out shutoff in cabinet;
(3) the corresponding contacts such as each relay, circuit breaker, shift knob are connected in series into control loop by circuit diagram according to Fig. 3, Fig. 4, Fig. 5 successively, construct in strict accordance with construction drawing, require that lead wire terminal is reliably fastenedly connected, wiring must be drawn from terminal board and connect, standard construction.
2) function check illustrates:
After the circuit diagram according to Fig. 3, Fig. 4, Fig. 5 completes, check controlling functions, during check, the first inlet wire control loop, the first inlet wire control loop run, and segmentation is in hot stand-by duty, and concrete checking procedure is as follows:
Step one, pull open higher level's mains switch of the first inlet wire control loop, make the first inlet wire control loop dead electricity, after power supply backup automatic input coefficient tripping first circuit breaker 1DL, 3rd circuit breaker 3DL closes a floodgate, in-put of spare power supply runs, and now verifies that the first power supply backup entering control loop drops into working properly automatically;
Step 2, pull open higher level's mains switch of the second inlet wire control loop, make the second inlet wire control loop dead electricity, after power supply backup automatic input coefficient tripping second circuit breaker 2DL, 3rd circuit breaker 3DL closes a floodgate, in-put of spare power supply runs, and now verifies that the second power supply backup entering control loop drops into working properly automatically.
Step 3, under simulation normal operating condition, manual disconnection first lead-in circuit breaker, the second lead-in circuit breaker button, residing for first opening button of the first lead-in circuit breaker and the second lead-in circuit breaker, residing for loop, the second opening button, loop is in blocking, now verifies that the first lead-in circuit breaker and the second lead-in circuit breaker normally run.
Step 4, under simulation normal operating condition, the 3rd switch knob of manual closing the 3rd circuit breaker 3DL, residing for the 3rd switch knob, loop is in blocking, and the 3rd circuit breaker 3DL keeps separating brake to run.
Step 5, simulate the first lead-in circuit breaker and the second lead-in circuit breaker accident tripping, and after the 3rd circuit breaker 3DL combined floodgate, manually disconnect the 3rd opening button of the 3rd circuit breaker 3DL, residing for 3rd opening button, loop is in blocking, and checking the 3rd circuit breaker 3DL keeps adhesive running status.
Step 6, after above verification completes, recovers the lead wire of each calibration equipment according to the circuit diagram of Fig. 3, Fig. 4, Fig. 5, after checking that confirmation is errorless, power supply backup of the present invention is dropped into systemic-function automatically and puts into operation.
Beneficial effect
Adopt power supply backup of the present invention automatically to drop into switching mode and there is following function and superiority:
1), by effective serial connection of each circuit-breaker status nodes of locations, prepared auto restart is made to realize logic more tight reliable, namely when under normal operating mode, lead-in circuit breaker 1DL and 2DL closing circuit remain on-state, can reliably avoid, because people causes lead-in circuit breaker to miss the generation of point accident for misoperation, reaching the object of the breaker safe operation that this keeping devotion runs;
2), when arbitrary section of bus dead electricity prepared auto restart action executing jumps corresponding lead-in circuit breaker, after closing the 3rd circuit breaker 3DL, 3rd circuit breaker 3DL closing circuit keeps connecting, thus guarantees that stand-by power supply reliably puts into operation, reaches the object of the breaker safe operation that this keeping devotion runs;
3), when under normal operating mode, lead-in circuit breaker 1DL and 2DL closes a floodgate and to put into operation state, 3rd circuit breaker 3DL closing circuit remains off-state, sub-gate circuit remains treats on-state (the 3rd circuit breaker 3DL normally open position movable contact is waited to connect), can reliably avoid, because people causes the 3rd circuit breaker to miss the generation of conjunction accident for misoperation, reaching the object that this maintenance divides the circuit breaker of open shop not close;
4), prepared auto restart control loop adopts circuit breaker position signal binode (jumping position, co-bit) to carry out locking, and control method is more reliable;
5), set up prepared auto restart and function is set drops into and select button out of service, can according to needs of production prepared auto restart be put into operation and exit, bus can be realized after function exits and wait operation side by side, facilitate electric substation's operational mode adjustment.
Capital equipment model parameter:
A ﹑ circuit breaker Q F1, QF2, QF3 model: NSX100N/4PMIC2.2;
The b ﹑ time relay T1, T2, T3, T4 model: HHS15A-30;
C ﹑ voltage relay KD1 ﹑ KD2 model: HHD5-D (XJ-G), operating voltage: 380V, contact capacity: 3A, AC380V;
According to above parameter, power supply backup automatically drops into and starts according to actual conditions deciliter, meets production requirement.
In sum, with reference to Fig. 3, Fig. 4, Fig. 5 and Fig. 6, under power supply backup of the present invention is dropped in exit status automatically, can people for carrying out lead-in circuit breaker 1DL, lead-in circuit breaker 2DL, and any divide-shut brake handoff functionality of the 3rd circuit breaker 3DL; Under power supply backup drops into the state of putting into operation automatically, for wire inlet loop, by lead-in circuit breaker 1DL, lead-in circuit breaker 2DL, and the 3rd the state position node (jump position, co-bit) of circuit breaker 3DL be linked into that respective switch is divided respectively, in closing circuit, and by the serial connection of each node, realize under incoming power normal operation, closing circuit is effectively connected, and people divides lead-in circuit breaker to cause the hidden danger of prepared auto restart error starting for misoperation can not cause by mistake; For contact loop, same effective serial connection by circuit breaker 1D1,2DL, 3DL state position node (jumping position, co-bit), realize only after inlet wire 1DL or the tripping of inlet wire 2DL dead electricity and under corresponding two sections of buses or one section of bus have electric normal operating condition, the function that 3rd circuit breaker 3DL is just reliably closed, simultaneously under power supply normal operating condition, i.e. lead-in circuit breaker 1DL, under lead-in circuit breaker 2DL closes situation, the sub-gate circuit of the 3rd circuit breaker 3DL remains on-state, guarantees that artificial false switching accident can not occur the 3rd circuit breaker.The effective serial connection of this programme by the state node of each circuit breaker (comprise and jump position node, co-bit node) is divided at prepared auto restart, in closing circuit, prepared auto restart is made to realize principle logic tighter, function uses more reliable, make process operation mode more flexible by setting up prepared auto restart throwing, retreating selection function simultaneously, avoid the risk of original prepared auto restart misoperation, being conducive to the operation reliably and with long-term of electric substation, is a kind of power control method of safe, simple and direct, flexibility and reliability.
Those of ordinary skill in the art will be appreciated that, above specification is only one or more execution modes in the numerous embodiment of the present invention, and not uses limitation of the invention.Any equalization for the above embodiment changes, modification and the equivalent technical scheme such as to substitute, as long as spirit according to the invention, all will drop in scope that claims of the present invention protect.
Claims (7)
1. the automatic input coefficient of power supply backup, is characterized in that, comprising:
Three-phase bus, the first voltage relay, the second voltage relay, the first time-delay relay, the second time-delay relay, the 3rd time-delay relay, the 4th time-delay relay;
Described first voltage relay and the second voltage relay comprise the first diverter switch and the second diverter switch respectively, and described first voltage relay and the second voltage relay are connected each circuitry phase of described three-phase bus respectively;
First diverter switch of described first voltage relay connects one end of described first time-delay relay, and the other end of described first time-delay relay connects zero line;
Second diverter switch of described first voltage relay connects one end of described 3rd time-delay relay, and the other end of described 3rd time-delay relay connects zero line;
First diverter switch of described second voltage relay connects one end of described second time-delay relay, and the other end of described second time-delay relay connects zero line;
Second diverter switch of described second voltage relay connects one end of described 4th time-delay relay, and the other end of described 4th time-delay relay connects zero line.
2. the automatic input coefficient of power supply backup as claimed in claim 1, it is characterized in that, also comprise circuit breaker, described circuit breaker comprises closing coil, switching winding, co-bit, jumping position;
Described co-bit is all connected to bus with jumping position, and described closing coil and switching winding are all connected to zero line.
3. the automatic input coefficient of power supply backup as claimed in claim 2, it is characterized in that, the automatic input coefficient of described power supply backup comprises three described circuit breakers, is the first circuit breaker, the second circuit breaker and the 3rd circuit breaker respectively.
4. the automatic input coefficient of power supply backup as claimed in claim 3, it is characterized in that, also comprise change over switch, first inlet wire sub-loop, second inlet wire sub-loop, contact sub-loop, described first inlet wire sub-loop connects described first circuit breaker and forms the first inlet wire control loop, described second inlet wire sub-loop connects described second circuit breaker and forms the second inlet wire control loop, and described contact sub-loop connects described 3rd circuit breaker and forms contact control loop;
Described first inlet wire control loop, the second inlet wire control loop and contact control loop are connected to described bus by described change over switch.
5. a method of calibration for the automatic input coefficient of power supply backup as claimed in claim 4, is characterized in that, comprise the following steps:
Step one, pull open higher level's mains switch of described first inlet wire control loop, make described first inlet wire control loop dead electricity, after first circuit breaker described in the automatic input coefficient tripping of described power supply backup, described 3rd breaker closing, in-put of spare power supply runs, and now verifies that the described first power supply backup entering control loop drops into working properly automatically;
Step 2, pull open higher level's mains switch of described second inlet wire control loop, make described second inlet wire control loop dead electricity, after second circuit breaker described in the automatic input coefficient tripping of described power supply backup, described 3rd breaker closing, in-put of spare power supply runs, and now verifies that the described second power supply backup entering control loop drops into working properly automatically.
6. the method for calibration of the automatic input coefficient of power supply backup as claimed in claim 5, is characterized in that, further comprising the steps of:
Step 3, under simulation normal operating condition, described first lead-in circuit breaker of manual disconnection, the second lead-in circuit breaker button, residing for first opening button of described first lead-in circuit breaker and described second lead-in circuit breaker, residing for loop, the second opening button, loop is in blocking, now verifies that described first lead-in circuit breaker and described second lead-in circuit breaker normally run;
Step 4, under simulation normal operating condition, the 3rd switch knob of the 3rd circuit breaker described in manual closing, residing for the 3rd switch knob, loop is in blocking, and the 3rd circuit breaker keeps separating brake to run.
7. the method for calibration of the automatic input coefficient of power supply backup as claimed in claim 6, is characterized in that, further comprising the steps of:
Step 5, simulate described first lead-in circuit breaker and described second lead-in circuit breaker accident tripping, and after described 3rd breaker closing, 3rd opening button of described 3rd circuit breaker of manual disconnection, residing for 3rd opening button, loop is in blocking, verifies that described 3rd circuit breaker keeps adhesive running status.
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| CN201410307024.1A CN105281419A (en) | 2014-06-30 | 2014-06-30 | Standby power supply automatic input system and validation method thereof |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109193553A (en) * | 2018-09-20 | 2019-01-11 | 深圳供电局有限公司 | Switching-on method and device for spare power supply of spare power automatic switching device |
| CN111983370A (en) * | 2020-08-31 | 2020-11-24 | 国网河南省电力公司濮阳供电公司 | Calibrator for calibrating backup power automatic switching protection device |
| CN112904134A (en) * | 2020-10-16 | 2021-06-04 | 国网山东省电力公司金乡县供电公司 | Uninterrupted power verification device for spare power automatic switching device, spare power automatic switching device and method |
-
2014
- 2014-06-30 CN CN201410307024.1A patent/CN105281419A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109193553A (en) * | 2018-09-20 | 2019-01-11 | 深圳供电局有限公司 | Switching-on method and device for spare power supply of spare power automatic switching device |
| CN109193553B (en) * | 2018-09-20 | 2020-06-02 | 深圳供电局有限公司 | Switching-on method and device for spare power supply of spare power automatic switching device |
| CN111983370A (en) * | 2020-08-31 | 2020-11-24 | 国网河南省电力公司濮阳供电公司 | Calibrator for calibrating backup power automatic switching protection device |
| CN112904134A (en) * | 2020-10-16 | 2021-06-04 | 国网山东省电力公司金乡县供电公司 | Uninterrupted power verification device for spare power automatic switching device, spare power automatic switching device and method |
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