CN201349181Y - Combinable high voltage single phase gradual dephasing supply apparatus - Google Patents
Combinable high voltage single phase gradual dephasing supply apparatus Download PDFInfo
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- CN201349181Y CN201349181Y CNU2009200953098U CN200920095309U CN201349181Y CN 201349181 Y CN201349181 Y CN 201349181Y CN U2009200953098 U CNU2009200953098 U CN U2009200953098U CN 200920095309 U CN200920095309 U CN 200920095309U CN 201349181 Y CN201349181 Y CN 201349181Y
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Abstract
Combinable high voltage single phase gradual dephasing supply apparatus consists of an input protection switch, an input current mutual inductor, an input transformer, an alternate-direct current quadrature dephasing module, a reactance type boosting output transformer, a reactor in parallel connection with a resistor, an output protection switch and a control device. The control device consists of a monitoring unit, a set of DSP controlling unit and a set of power driving module. An input single phase voltage transducer is connected with the input end A of the device, an output single phase voltage transducer is connected with the output end C, and a bonded phase voltage transducer is connected with the B phase contact net supply arm; a starting mutual inductor is connected with the input end of the device, and a starting mutual inductor is connected with the B phase contact net supply arm. The utility model has the advantages that passing the split phase is completed in a short time, the safety of the engine is improved while the occupation area is reduced, and the aparatus can not only operate independently, but also can be combined with another apparatus to work together, in terms of improving the reliability of the utility model.
Description
One, technical field
The utility model belongs to electric power system device and high pressure and large-capacity power electronic technology field, particularly a kind of single-phase progressive phase shift supply unit of high pressure capable of being combined that is used for above 50HZ of 25kV and 60HZ single phase power supply field.
Two, background technology:
Electric railway adopts single-phase 25kV tractive power supply system, power to electric locomotive or motor train unit through contact line supply arm by electric substation along the railway track top, each supply arm is generally 25 kilometers, two adjacent supply arms are the phase place difference often, can not link together, therefore, a neutral section form is arranged between two adjacent supply arms, neutral section also is one section contact line.Between neutral section and the contact both sides net supply arm fracture is arranged respectively, be respectively into section fracture and the section of going out fracture, by these two fractures, the supply arm of neutral section both sides is kept apart, neutral segment length generally has 400 meters to 500 meters, and with the both sides supply arm do not have machinery be connected, this neutral section that has fracture is called phase-splitting on electric, electric locomotive slides to the section of the going into fracture of neutral section from a side joint net-fault supply arm of phase-splitting, enter neutral section from the section of going into fracture again, through the process that the section of going out fracture leaves neutral section and arrives opposite side contact line supply arm again, cried phase-splitting.Locomotive or EMU be by the pantograph at locomotive or motor-car top with obtain energy during contact line contacts, in the locomotive walking process, pantograph also slides along with locomotive and contacts with contact line all the time, therefore can continuously get stream from contact line, if under locomotive on-load situation, pantograph from live part contact line supply arm when uncharged neutral section slides, pantograph is in the process of progressively leaving live part, will cause pantograph and charged between the arcing phenomenon appears, this electric arc can produce very big heat at short notice, even blow contact line, and causing the accident, this situation is called the locomotive on-load and rushes phase-splitting, on the contrary, if locomotive is the undue phase time of on-load not, because can not form current circuit, above-mentioned arcing phenomenon just can not appear.
For head it off, conventional locomotive is crossed phase-splitting and is mainly adopted two kinds of methods, a kind of method is, before locomotive is crossed phase-splitting, just with the vehicle-mounted circuit breaker automatic brake separating of the major loop on the locomotive, make the locomotive major loop descend phase-splitting in the cut situation of load, the feature of this method is, on the track circuit of neutral section both sides, the locomotive transponder is installed, transponder generally has 300 meters distance apart from the neutrality section, when locomotive enters the position of process transponder before neutral section, and transponder driven locomotive body circuit breaker trip, locomotive cuts off the power supply but pantograph is not landed and slided by crossing phase-splitting, the greatest problem of this method is that locomotive body major loop circuit breaker carries out frequent operation, has increased the frequency of maintenance of locomotive major loop circuit breaker, has also reduced the fail safe of locomotive, simultaneously, because the every undue phase time of locomotive has been cut off power supply, cross phase-splitting by the locomotive coast, the speed of crossing phase-splitting can reduce, if just cut off once every 25km locomotive circuit breaker, can prolong the time of train occupation track circuit; The another kind of method that conventional locomotive is crossed phase-splitting is, the non-shut-brake phase-splitting excessively of locomotive vehicle-mounted circuit breaker, but after locomotive enters neutral section, the contact line short supply interruption, the feature of this method is, the section of going into fracture two ends also connect a circuit breaker, and this circuit breaker is in closure state, the section of going out fracture also connects another circuit breaker, and this circuit breaker is in off-state.After train entered neutral section fully through the section of going into fracture, the section of going into fracture side circuit breaker is separating brake immediately, and after the time-delay more than the 150ms, the section of going out fracture side breaker closing makes neutral section realize commutation, and locomotive is able to pass through smoothly the section of going out fracture and leaves the neutrality section.These two circuit breakers are installed in ground.This method has solved the former some problems, but the maintenance cost of ground vacuum circuit-breaker is very high, and floor space is big, and may cause very high switching overvoltage when switching, and is very unfavorable to the safety of locomotive.
Summary of the invention:
The purpose of this utility model just is to overcome above-mentioned the deficiencies in the prior art, and provide a kind of high pressure capable of being combined single-phase progressive phase shift supply unit, this installed the speed of phase-splitting fast, shorten locomotive and take the time of track circuit, and improved locomotive fail safe, reduced floor space.
The technical solution of the utility model is: the single-phase progressive phase shift supply unit of a kind of high pressure capable of being combined is characterized in that: be made up of boost parallel connection, output protection switch and the control device of output transformer, reactor and resistance of input protection switch, input current transformer, input transformer, friendship orthogonal phase shift block, reactance type; Input protection switch (1) through input current transformer (2), be connected to former limit one end of input rectifying transformer (3), and the other end on former limit is connected with rail (31); The inferior limit of input rectifying transformer (3) connects the input of best friend's orthogonal phase shift block (4); Hand over two outputs of orthogonal phase shift block (4) to be connected to boost two inputs on the former limit of output transformer (30) of reactance type, the boost end on inferior limit of output transformer (30) of reactance type is connected to the input of reactor (8), and the other end on inferior limit is connected with rail (31); The parallel connection of reactor (8) and a resistance (9), the output that back in parallel forms is connected with output protection switch (10) input, and the output of output protection switch (10) can power to the load as the output of device; Control device is made up of monitoring unit (16), a cover DSP control unit (17) and one group of power driver module (18), communicate by letter by optical fiber or twisted-pair feeder between monitoring unit (16) and the DSP control unit (17), and between DSP control unit (17) and the power driver module (18) by optical fiber communication, power driver module (18) is connected with handing over the orthogonal phase shift block.
The input A of this device is connected with an input single-phase voltage transducer (11), and output C is connected with an output single-phase voltage transducer (13), and the B net-fault supply arm (29) that joins is connected with one and closes phase voltage transducer (12); This device is connected with a startup instrument transformer (14) at input, is connected with a startup instrument transformer (15) at the B net-fault supply arm (29) that joins.
Above-mentioned friendship orthogonal phase shift block (4) is that the serial connection of controlling inverter bridge (7) by rectifier bridge or full-controlled rectifier bridge (5), shaping loop (6), entirely forms.
Above-mentioned friendship orthogonal phase shift block can be connected in parallel by the friendship orthogonal phase shift block group of two or more synchronous operations simultaneously, wherein, each hands over an input serial connection input contactor (20) of orthogonal phase shift block (4), an output serial connection output contactor (21); A plurality of friendship orthogonal phase shift block (4) can be shared a cover DSP control unit (17), also can each hand over orthogonal phase shift block (4) with a cover DSP control unit (17), realize that by communication synchronous coordination moves between each DSP control unit (17).
Above-mentioned friendship orthogonal phase shift block can be connected in series by the friendship orthogonal phase shift block group of two or more synchronous operations simultaneously, a plurality of friendship orthogonal phase shift block (4) can be shared a cover DSP control unit (17), also can hand over orthogonal phase shift block (4) configuration one cover DSP control unit (17), realize the synchronous coordination operation by communication between each DSP control unit (17) for each.
This device can be with two cover parameter and the identical progressive phase shift supply unit redundant configuration of performance, be used, two covering devices can be shared a cover monitoring unit (16), and the shared cover reactance type output transformer (30) that boosts, a shared cover reactor (8) and a resistance (9), a shared cover output protection switch (10), and every suit hands over the output of orthogonal phase shift block (4) respectively to dispose a cover output contactor (21), and the output of the output contactor (21) of two covering devices can connect together; Two covering devices have independently input respectively, and output links together all to identical electric.Main input with device (22) is the A end, and A holds with the A net-fault supply arm (27) that joins and is connected; The input of reserve arrangement (23) is a B end, and B end and the B net-fault supply arm (29) that joins is connected, and to be the C end by common output section be connected with neutrality two covering devices.
This device can be united use with two cover parameter and the identical progressive phase shift supply unit redundant configuration of performance; Main independent fully with device (22) and reserve arrangement (23), output single-phase voltage transducer (13) is set between the input of the output of the reactor of every covering device (8) and output protection module (10), can close phase with the output that guarantees two covering devices; The master is respectively equipped with input with device (22) and reserve arrangement (23), links together on output is electric, can both be to same electric; Main input protection switch with device (22) and reserve arrangement (23) always is in and closes the position, and main output protection switch (10) with device (22) is in and closes the position, and the output protection switch (10) of reserve arrangement (23) is in the branch position; Main input with device (22) is the A end, and output is the C end, and the phase place of the contact line that the A end is connected is the A phase; The input of reserve arrangement (23) is the B end, and output is the C end, and the phase place of the contact line that the B end connects is the B phase; The output C of two covering devices all is connected with neutral section; The output of two covering devices can be closed for a long time and is in parallel, and also can close in short-term to be in parallel, and is only closing when being in parallel, and all input protection switch (1) the output protection switches (10) of two covering devices just are in closing position simultaneously.
Above-mentioned startup instrument transformer can be a voltage transformer, it is parallel with contact line supply arm (27) but do not connect at the distolateral contact line supply arm (27) of input one section contact wire (28) to be installed, an end that starts in instrument transformer (14) input links to each other with this section contact wire (28), and the other end links to each other with rail (31).
Above-mentioned startup instrument transformer can be a current transformer, then start instrument transformer (14) and can be connected in series on the contact line supply arm (27), and with the distance of the section of going into fracture (24) length less than a train.
Above-mentioned shaping loop (6) is reactor of series connection in the anodal loop of the DC link of rectifier bridge (5) output, one group of electrochemical capacitor in parallel and high frequency capacitance, diode, IGBT electronic switch and resistance between positive and negative electrode are with arrangement dc waveform and absorbing high-frequency signal; The input side of output transformer (30) reactance of connecting of boosting of above-mentioned reactance type.
The utility model puts forward based on the ripe gradually of high-power electric and electronic manufacturing technologies such as high-power IGCT or IGBT, PWM or SPWM sine wave modulation technology by DSP control, realize the high-power electric and electronic supply unit, this device power taking from the contact line supply arm, and it is independent to the neutral section power supply of contact line, when the electric locomotive load arrived neutral section, this device can be realized functions such as phase shift, voltage adjustment, voltage stabilizing and current limliting, made locomotive not cut off the power supply and crossed phase-splitting automatically.
The utility model has the advantages that: the time that speed is fast, the shortening locomotive takies track circuit that 1, crosses phase-splitting.2, improved locomotive fail safe, reduced floor space.3, this device both can independent operating, also two covering devices can be combined, and cooperatively interacted or united use, and reliability is higher; Be applicable to this device choosing the automatic phase-splitting excessively of electrification railway contact net, this device all can be adapted to the electric traction passenger and freight train of various speed class and all lengths, and the motor train unit of many pantographs is crossed the needs of phase-splitting.
Description of drawings:
Fig. 1 is fundamental circuit figure of the present utility model.
Fig. 2 is two or more friendship orthogonal phase shift block loop diagrams that use in parallel.
Fig. 3 is the loop diagram that two or more friendship orthogonal phase shift block series connection are used.
Fig. 4 is the loop diagram that the progressive phase shift supply unit of two covers is used.
Fig. 5 is the loop diagram that the progressive phase shift supply unit of two covers is united use.
Fig. 6 is a kind of pantograph position probing figure of electric locomotive load.
Embodiment:
As shown in Figure 1: the single-phase progressive phase shift supply unit of a kind of high pressure capable of being combined is characterized in that: be made up of boost parallel connection, output protection switch and the control device of output transformer, reactor and resistance of input protection switch, input current transformer, input transformer, friendship orthogonal phase shift block, reactance type.Input protection switch (1) through input current transformer (2), be connected to former limit one end of input rectifying transformer (3), and the other end on former limit is connected with rail (31); The inferior limit of input rectifying transformer (3) connects the input of best friend's orthogonal phase shift block (4); Hand over two outputs of orthogonal phase shift block (4) to be connected to boost two inputs on the former limit of output transformer (30) of reactance type, the boost end on inferior limit of output transformer (30) of reactance type is connected to the input of reactor (8), and the other end on inferior limit is connected with rail (31); The parallel connection of reactor (8) and a resistance (9), possess filtering, dividing potential drop and metering function, the output that back in parallel forms is connected with output protection switch (10) input, and the output of output protection switch (10) can power to the load as the output of device; Control device is made up of monitoring unit (16), a cover DSP control unit (17) and one group of power driver module (18), communicate by letter by optical fiber or twisted-pair feeder between monitoring unit (16) and the DSP control unit (17), and between DSP control unit (17) and the power driver module (18) by optical fiber communication, power driver module (18) is connected with handing over the orthogonal phase shift block.
Above-mentioned friendship orthogonal phase shift block (4) is that the serial connection of controlling inverter bridge (7) by rectifier bridge or full-controlled rectifier bridge (5), shaping loop (6), entirely forms; Shaping loop (6) is reactor of series connection in the anodal loop of the DC link of rectifier bridge (5) output, one group of electrochemical capacitor in parallel and high frequency capacitance, diode, IGBT electronic switch and resistance between both positive and negative polarity are with arrangement dc waveform and absorbing high-frequency signal; The input side of output transformer (30) reactance of connecting of boosting of above-mentioned reactance type, this reactance does not participate in the electromagnetism transform of transformer, only is used for the arrangement of output waveform.
The input of this device is connected with an input single-phase voltage transducer (11), output is connected with an output single-phase voltage transducer (13), the B net-fault supply arm (29) that joins is connected with one and closes phase voltage instrument transformer (12), input, output and the B that the is used for measurement mechanism voltage waveform of net-fault supply arm (29) side that joins.In addition, this device is at the input startup instrument transformer (14) of connecting, and at B net-fault supply arm (29) the startup instrument transformer (15) of connecting that joins, starting instrument transformer can be current transformer, also can be voltage transformer.
This device is provided with a cover monitoring unit (16), cover DSP control unit (17) and one group of power driver module (18).Communicate by letter by optical fiber or twisted-pair feeder between assembly monitor unit (16) and the DSP control unit (17), and between DSP control unit (17) and the power driver module (18) by optical fiber communication.Monitoring unit possess with DSP control unit (17) communication function, with other device communication functions, human-machine interface functions and with transponder device (19) communication function.Power driver module (18) is used for controlling full the angle of flow control of inverter bridge (7), and this power driver module (18) insulation against ground is installed, and its insulation level over the ground is identical with the insulation level over the ground of input rectifying transformer (3) output.DSP control unit (17) receives the distolateral startup instrument transformer (14) of device input and the signal of input current transformer (2).The effect of DSP control unit (17) is, effect one, reception is from the signal of the distolateral startup instrument transformer (14) of input, and the signal of input current transformer (2), comprehensive judgement, after receiving the current signal that starts instrument transformer (14) and input current transformer (2) simultaneously, DSP control unit (17) is carried out the phase shift program according to program start power driver module (18); This phase shift program is, the join waveform signal of net-fault supply arm voltage sensor (12) of receiving system input terminal voltage transducer (11), output end voltage transducer (13) and B is followed the tracks of judgement, and be with load phase shift, pressure regulation and voltage stabilizing by gradual, by PWM or SPWM modulating transformation, make the final voltage waveform of output reach the net-fault supply arm that joins with B; Effect two; when DSP control unit (17) detects the value of self-starting instrument transformer (14) and input current transformer (2) to exceed the scope of relevant phase shift loop permission tolerance; send to power driver module (18) immediately and block PWM or SPWM modulation signal, turn-off full control inverter bridge (7), disconnect input protection switch (1) and output protection switch (10), and notice monitoring unit (16) etc.
This device has two kinds of operating modes:: a kind of is the A phase power taking of this device from electrical network, initial phase to the output electric is A phase 50HZ or 60HZ single-phase high voltage industrial-frequency alternating current, this moment load from input to output, move to the B net-fault supply arm direction of joining again, receive the signal of startup instrument transformer (14) distolateral and input current transformer (2) simultaneously when DSP control unit (17) after from input, the join voltage waveform of net-fault supply arm of B is followed the tracks of, the waveform of output, phase place and amplitude constantly with the B net-fault supply arm comparison of joining, with the B net-fault supply arm adjustment of joining, progressively with the join phase place of net-fault supply arm of B, amplitude is consistent with waveform, after the rectification and inversion of handing over orthogonal phase shift block (4), pass through the step-down of the shunt circuit of reactor (8) and resistance (9) again, convert output to B the join 50HZ or the 60HZ single-phase high voltage alternating current of net-fault supply arm, phase angle difference can reach 0 degree between phase place and the device A phase sequence that input inserted of net-fault supply arm and B joins, 60 degree, 90 degree, 120 degree or 180 degree.Another kind of operating mode is, this device A phase power taking from electrical network is A phase 50HZ or 60HZ single-phase high voltage industrial-frequency alternating current to the initial phase of output electric, but load is joined the net-fault supply arm to output, move to the input direction from B again.Receive startup instrument transformer (15) signal of the net-fault supply arm that joins from B when DSP control unit (17) after, phase shifting equipment carries out the work of phase shift voltage stabilizing current limliting immediately, and make the phase place of output C reach the join phase place of net-fault supply arm of B, it is the B phase, after starting instrument transformer (15) blackout, after receiving the signal that starts instrument transformer (14) and input current transformer (2) more simultaneously, immediately the voltage waveform of input is followed the tracks of, make the output waveform of device, continuous and the input comparison of phase place and amplitude, with the input adjustment, progressively with the phase place of input, amplitude is consistent with waveform, after the rectification and inversion of handing over orthogonal phase shift block (4), pass through the step-down of the shunt circuit of reactor (8) and resistance (9) again, voltage-phase with output, amplitude becomes the phase place of the 50HZ or the 60HZ single-phase high voltage alternating current of input with waveform transformation, amplitude and waveform, phase angle difference can reach 0 degree between the B phase sequence that the net-fault supply arm inserted and the phase place of input and B join, 60 degree, 90 degree, 120 degree or 180 degree.
Second kind of operating mode of this device is: when DSP control unit (17) detects the value of self-starting instrument transformer (14) and input current transformer (2) to exceed the scope of friendship orthogonal phase shift block (4) permission tolerance; send to power driver module (18) immediately and block PWM or SPWM modulation signal, turn-off full control inverter bridge (7), disconnect input protection switch (1) and output protection switch (10), and notice monitoring unit (16).After monitoring unit (16) receives this information; through after a while; the input protection switch (1) of command device and output protection switch (10) drop into once more; and carry out the same program reserve in advance; if install short circuit once more; then monitoring unit (16) order DSP control unit (17) turn-offs full control inverter bridge (7), by the protection disconnection power supply that input and output got access to grid of monitoring unit (16).If during faults such as generation friendship orthogonal phase shift block component wear, start transponder device by monitoring unit.
The feature of gradual phase shift is, hand over orthogonal phase shift block (4) progressively bringing onto load phase shift conversion of phase shifting equipment in the time of a plurality of cycles, the feature of this conversion is, can be through one section low frequency or high-frequency transition, go to the target phase of power frequency again, or in conversion process, each cycle moves a little phase angle, and a plurality of cycles of process progressively phase shift arrive target phase.
As shown in Figure 2: for the output capacity of generator, can be with two or more friendship orthogonal phase shift block (4) use in parallel, synchronous operation simultaneously.For this pattern, each hands over an input serial connection input contactor (20) of orthogonal phase shift block (4), hand over an output serial connection output contactor (21) of orthogonal phase shift block (4), so that can be promptly with fault friendship orthogonal phase shift block (4) from state in parallel, isolate, or determine to want friendship orthogonal phase shift block (4) quantity of parallel running according to the characteristics of load.Under this pattern, a plurality of friendship orthogonal phase shift block (4) can be shared a cover DSP control unit (17), also can each hand over orthogonal phase shift block (4), realize the synchronous coordination operation by communication between each DSP control unit (17) with a cover DSP control unit (17).
As shown in Figure 3: in order to improve the output voltage of handing over orthogonal phase shift block (4), hand over orthogonal phase shift block (4) can bear more voltage regulation function, two or more friendship orthogonal phase shift block (4) series connection can be used synchronous operation simultaneously so that make.For this pattern,, can will install out of service by DSP control unit (17) excision input protection switch (1) and output protection switch (10) in case one of them hands over orthogonal phase shift block (4) to break down.Under this pattern, a plurality of friendship orthogonal phase shift block (4) can be shared a cover DSP control unit (17), also can hand over orthogonal phase shift block (4) configuration one cover DSP control unit (17), realize the synchronous coordination operation by communication between each DSP control unit (17) for each.
The combination that the progressive phase shift supply unit of two covers as shown in Figure 4 is used is described:
Can be with two cover parameter and the identical progressive phase shift supply unit redundant configuration of performance; be used; two covering devices can be shared a cover monitoring unit (16); and the shared cover reactance type output transformer (30) that boosts; a shared cover reactor (8) and a resistance (9); a shared cover output protection switch (10), and every suit hands over the output of orthogonal phase shift block (4) respectively to dispose a cover output contactor (21).Therefore, the output of the output contactor (21) of two covering devices can connect together.Can be with in the progressive phase shift supply unit of two covers, at first a covering device of Shi Yonging is used device (22) when deciding, and is then another set of as reserve arrangement (23).Concrete feature is, it is the A end that main input with device is set, be provided with A hold connect electrical network phase place be the A phase; The input that reserve arrangement is set is the B end, and the phase place of B electrical network that end connects is the B phase, and the common output of two covering devices is the C end.The output of two devices links together, all to identical electric.During normal operation, can use always mainly with device (22), main during, have three kinds with the matching model of reserve arrangement (23) with device (22) fault:
First kind of matching model is, main with device (22) input distolateral startup instrument transformer (14), and input current transformer (2) is when having enabling signal simultaneously, the components and parts fault has taken place in device in the phase shift process, or the device phase shift is behind certain magnitude of voltage, the fault of further phase shift and pressure regulation has taken place, output does not reach the final objective voltage-phase, when amplitude and waveform, then the DSP control unit (17) by monitoring unit startup reserve arrangement (23) then disconnects main input protection switch (1) and output contactor (21) with device immediately, does not start reserve arrangement;
Second kind of matching model is, after receiving startup instrument transformer (14) signal, the master can't start at the very start with device (22) at all, then disconnect main input protection switch (1) and output contactor (21) immediately with device (22), existing side by side soon, the input protection switch (1) and the output contactor (21) of reserve arrangement (23) drop into, and startup reserve arrangement (23) is carried out corresponding program, guarantee that the voltage adjustment carries out according to the good pattern of predefine, make the phase place of output, amplitude and waveform reach the phase place of target voltage progressively gradually, amplitude and waveform requirement;
The third matching model is; when leading with catastrophe failures such as device (22) are short-circuited; DSP control unit (17) disconnects input protection switch (1) and output contactor (21) immediately; through after a while; automatically drop into the input protection switch (1) and the output contactor (21) of reserve arrangement (23); and startup reserve arrangement (23) carries out gradual phase shift work; if catastrophe failures such as reserve arrangement (23) is short-circuited again; then by monitoring unit (16) by defencive function, disconnect the main A that input got access to grid phase with device (22) reserve arrangement (23) and B power supply mutually.
The progressive phase shift supply unit of two covers is as shown in Figure 5 united the combination of use and is described:
Two cover parameter and the identical progressive phase shift supply unit redundant configuration of performance can be united use.Main with the coordination by each other of device (22) and reserve arrangement (23), the while is to identical electric, so that the output capacity of aggrandizement apparatus.For this use pattern; main device (22) and the reserve arrangement (23) used can be independent fully; composite device not; and output single-phase potential transformer (13) is set between the input of the output of the reactor of every covering device (8) and output protection module (10), can closes phase with the output that guarantees two covering devices.Concrete feature is, it is the A end that main input with device (22) is set, and output is the C end, be provided with A hold connect electrical network phase place be the A phase; The input that reserve arrangement (23) is set is the B end, and output is the C end, and the phase place that the B end is connected to electrical network is the B phase.Link together on the output of two devices is electric, can both be to same electric.Main input protection switch with device (22) and reserve arrangement (23) always is in and closes the position, and main output protection switch (10) with device (22) is in and closes the position, and the output protection switch (10) of reserve arrangement (23) is in the branch position.The moving direction (33) of supposing load be from main with the input A end of device (22), to output C end, move to the join direction of net-fault supply arm of B again, when output did not also have load, the phase place of output was the A phase.In order to adjust voltage between the output that guarantees two covering devices flexibly and to close phase smoothly, the rectifier bridge of reserve arrangement (5) also can be replaced with the full-controlled rectifier bridge.Main have two kinds with united mode between device (22) and the reserve arrangement (23):
First kind of united mode is, when main when having signal to export simultaneously with distolateral startup instrument transformer (14) of the input of device (22) and input current transformer (2), coordinate by monitoring unit (16), make the winner carry out phase-shift voltage regulating simultaneously synchronously with device (22) and startup reserve arrangement (23), simultaneously, export with phase place, amplitude and the waveform of identical voltage; When two covering devices through after the phase shift voltage stabilizing, output can reach when closing the phase degree, closes a floodgate and drops into the output protection switch (10) of reserve arrangement (23), the output of two covering devices is carried out and is united phase; When main with the distolateral startup instrument transformer (14) of the input of device and input current transformer (2) when all not having current signal; turn-off the full control inverter bridge (7) of reserve arrangement (23); and the output protection switch (10) of disconnection reserve arrangement (23); afterwards; the master returns to reset condition with device (22), promptly keeps the phase place of input A end.When main with device (22) when catastrophe failure such as being short-circuited after reserve arrangement (23) closes mutually simultaneously; then pass through protection by monitoring unit (16); disconnect the power supply that A is got access to grid mutually with B mutually; when any progressive phase shift supply unit generating device fault, then an open failure device input protection switch (1) and output protection switch (10) get final product.
Second kind of united mode is, when main when having signal to export simultaneously with distolateral startup instrument transformer (14) of the input of device (22) and input current transformer (2), coordinate by monitoring unit (16), make the winner carry out phase-shift voltage regulating simultaneously synchronously with device (22) and startup reserve arrangement (23), simultaneously, export with phase place, amplitude and the waveform of identical voltage; When two covering devices through after the phase shift voltage stabilizing, when the phase place of output voltage, amplitude and waveform reach target, close a floodgate and drop into the output protection switch (10) of reserve arrangement (23), the output of two covering devices carried out and united phase; After closing success mutually; turn-off main full control inverter bridge (7) in order with device (22); disconnect main output protection switch (10) with device (22); continue to the electric that moves by reserve arrangement (23); when the input current transformer (2) of reserve arrangement (23) when not having current signal; illustrate that load has arrived the B net-fault supply arm that joins; after this, turn-off the full control inverter bridge (7) of reserve arrangement (23); disconnect the output protection switch of reserve arrangement (23); close a floodgate and drop into main output protection switch (10) with device (22); starting the master makes the phase place of its output reach the phase place of input A end with device (22).When leading with catastrophe failures such as device (22) and reserve arrangement (23) are short-circuited simultaneously; then pass through protection by monitoring unit (16); disconnect the power supply that A is got access to grid mutually with B mutually; when any progressive phase shift supply unit generating device fault, then an open failure device input protection switch (1) and output protection switch (10) get final product.
This device is used in electrified railway traction power supply system: phase-splitting is made up of A net-fault supply arm (27), neutral section (26), the B net-fault supply arm (29) that joins that joins, neutral section has the section of a going into fracture (24) mutually with A between the supply arm, neutral section has the section of a going out fracture (25) mutually with B between the supply arm, A net-fault supply arm (27) and B net-fault supply arm (29) phase sequence of joining of joining is different, and phase difference can be any in 0 degree, 60 degree, 90 degree, 120 degree and 180 degree.The electric locomotive load is as moving load, the moving direction (33) of its pantograph (32) is from the distolateral contact line of input of device, slide to the neutral section (26) that is connected with output through the section of going into fracture (24), continue the process section of going out fracture (25) again and slide into the join contact line of net-fault supply arm side of B.
If according to the expressed content of Fig. 1, only select the progressive phase shift supply unit of a cover for use, can arrange this device in parallel with the section of going into fracture (24), have only this covering device like this as the main device of using; If select two covering device redundant configuration for use, then can arrange the master in parallel with the section of going into fracture (24), and reserve arrangement (23) is in parallel with the section of going out fracture (25) with device (22), the output of every covering device is connected to the neutral section (26) of contact line; If according to the expressed content of Fig. 4, promptly two overlap the combination that progressive phase shift supply unit is used, and then reactance type output transformer (30) to the loop between the output protection switch (10) can be shared, also can be separate.
The description of the detection execution mode of motorcycle pantograph position:
The detection of motorcycle pantograph position cooperates realization by starting instrument transformer (14) and input current transformer (2).A kind of operating mode is that electric locomotive is from the direction running of the section of going into fracture (24) to the section of going out fracture (25) side.Have dual mode to realize the position probing of motorcycle pantograph:
Mode one, with main with the related startup instrument transformer of device (22) (14) if select current transformer for use, then this instrument transformer can the contact line supply arm of the section of being connected in series in fracture side on, and certain distance is arranged with the section of going into fracture, when moving (33), slides when starting between instrument transformer (14) and the input current transformer (2) by electric locomotive to current mode, then have only startup instrument transformer (14) that current signal is arranged, show the neutral section of electric locomotive load no show still (26), if and start instrument transformer (14) and input current transformer (2) when current value is identical, show that then the pantograph of electric locomotive has entered in neutral section (26) fully.
Mode two, as shown in Figure 6, with main with the related startup instrument transformer of device (22) (14) if select voltage transformer for use, it is parallel with contact line supply arm (27) but do not connect then at the distolateral contact line supply arm (27) of input one section contact wire (28) to be installed, an end that starts in instrument transformer (14) input links to each other with this section contact wire (28), and the other end links to each other with rail (31), when the pantograph (32) of electric locomotive is entering neutral section (26) are preceding when touching this section contact wire, pantograph (32) connects together contact line supply arm (27) with contact wire (28), therefore voltage-type startup instrument transformer (14) is subjected to, the pantograph that so yet can detect electric locomotive does not enter the signal of neutral section (26) as yet, and do not have voltage signal when starting instrument transformer (14), input current transformer (2) shows that then the electric locomotive load has entered neutral section when current signal is arranged simultaneously.
After electric locomotive is away from neutral section, because of the existence of the section of going out fracture (25), and make and start instrument transformer (14) and input current transformer (2) has not had current signal, show that the electric locomotive load is not in neutrality section.
The description of three kinds of execution modes of the present utility model:
Scheme one, expressed as Fig. 1, only select the progressive phase shift supply unit of a cover for use, can arrange this device in parallel with the section of going into fracture (24), the input of device inserts the distolateral contact line supply arm (27) of input, and output inserts neutral section (26), in order to say something, here select for use current transformer as starting instrument transformer (14), shown in the combination one of above-mentioned motorcycle pantograph position probing.When not having the electric locomotive load, the initial phase of neutral section (26) is identical with the phase place of importing distolateral contact line supply arm (27), when starting instrument transformer (14) and input current transformer (2) when all detecting current signal, DSP control unit (17) starts gradual phase shift program, and the phase place of neutral section is adjusted to the join phase place of net-fault supply arm (29) of B.
When DSP control unit (17) detects the value of self-starting instrument transformer (14) and input current transformer (2) to exceed the permission tolerance range of device; send to power driver module (18) immediately and block PWM or SPWM modulation signal, turn-off full control inverter bridge (7), disconnect input protection switch (1) and output protection switch (10), and notice monitoring unit (16).After monitoring unit receives this information; through after a while; the input protection switch (1) of command device and output protection switch (10) close a floodgate and drop into once more; and carry out the same program reserve in advance; if install short circuit once more; then monitoring unit order DSP control unit (17) turn-offs full control inverter bridge (9), notifies monitoring unit (16), and disconnects input side joint net-fault supply arm and output end contact line supply arm power supply by monitoring unit (16) protection.
Scheme two, expressed as Fig. 4, select two covering device redundant configuration for use, be used, then can arrange the master in parallel with the section of going into fracture (24) with device (22), and reserve arrangement (23) is in parallel with the section of going out fracture (25), the output of two covering devices all is connected to the neutral section (26) of contact line.The main device (22) of using moves all the time, and the initial phase of neutral section is the voltage-phase of input side joint net-fault supply arm.Several operation programs of device have below been described.
First kind of matching model is that the main device (22) of using is imported distolateral startup instrument transformer (14), and input current transformer (2) shows that the electric locomotive load has entered neutral section (26) when simultaneously enabling signal being arranged, device gradual phase shift of beginning and pressure regulation program.The components and parts fault has taken place in device in the phase shift process; or the device phase shift is behind certain magnitude of voltage; the fault of further phase shift and pressure regulation has taken place; when output does not reach final objective voltage-phase, amplitude and waveform; then disconnect main input protection switch (1) and output contactor (21) immediately, do not start reserve arrangement (23) with device (22).For this use pattern, main with device (22) and reserve arrangement (23) can common output output single-phase potential transformer (13).
Second kind of matching model is; after receiving startup instrument transformer (14) signal; show that the electric locomotive load has soon entered neutral section (26); but this moment, the master can't start at the very start with device (22) at all; then disconnect main input protection switch (1) and output contactor (21) immediately with device (22); existing side by side soon, the input protection switch (1) and the output contactor (21) of reserve arrangement (23) drop into; and the phase place of the feasible neutral section of startup reserve arrangement (23) (26); amplitude and waveform reach the voltage-phase of input side joint net-fault supply arm (27) progressively gradually; amplitude and waveform guarantee that the electric locomotive load can slip into neutral section (26) smoothly.Because the existence of the section of going into fracture (24), so, when the current signal in starting instrument transformer (14) disappears, show that the electric locomotive load has entered neutral section (26), at this moment, reserve arrangement (23) carries out phase shift and pressure regulation again, makes phase place, amplitude and the waveform of neutral section reach B join net-fault supply arm side joint touch net voltage-phase, amplitude and the waveform of (29) progressively gradually, thereby guarantees that the electric locomotive load successfully skids off neutral section.
The third matching model is; when the master is short-circuited fault with device (22); DSP control unit (17) disconnects input protection switch (1) and output protection switch (10) immediately; through after a while; automatically drop into the input protection switch (1) and the output protection switch (10) of reserve arrangement (23); and startup reserve arrangement (23) carries out gradual phase shift work; if reserve arrangement (23) is short-circuited again; the defencive function by monitoring unit (16) then disconnects the join far-end power supply of contact line supply arm (29) of net-fault supply arm side of the distolateral contact line supply arm (27) of input and B.
Scheme three, expressed as Fig. 5, two cover parameter and the identical progressive phase shift supply unit redundant configuration of performance can be united use.Main with the coordination by each other of device (22) and reserve arrangement (23), the while is to identical electric, so that the output capacity of aggrandizement apparatus.For this use pattern; main device (22) and the reserve arrangement (23) used can be independent fully; composite device not; and output single-phase voltage transducer (13) is set between the input of the output of the reactor of every covering device (8) and output protection module (10), can closes phase with the output that guarantees two covering devices.Concrete feature is, it is the A end that main input with device (22) is set, and output is the C end, and the B net-fault supply arm that joins is the B end, be provided with A hold connect electrical network phase place be the A phase; The input that reserve arrangement is set is a B end, and output is the C end, and the B net-fault supply arm that joins is the A end, and the phase place of B electrical network that end connects is the B phase.The output of two devices links together, can both be to same electric.Main input protection switch with device (22) and reserve arrangement (23) always is in and closes the position, and main output protection switch (10) with device (22) is in and closes the position, and the output protection switch (10) of reserve arrangement (23) is in the branch position.Suppose load move (33) direction be from main with the input A end of device (22), to output C end, move to the join direction of net-fault supply arm B end of B again.In order to adjust voltage between the output that guarantees two covering devices flexibly and to close phase smoothly, the rectifier bridge of reserve arrangement (5) also can be replaced with the full-controlled rectifier bridge.Main have two kinds with united mode between device (22) and the reserve arrangement (23):
First kind of united mode is that the operation that is in parallel is closed in the output of two covering devices.It is characterized in that, when having signal to export simultaneously, show that the electric locomotive load has entered neutral section (26) with distolateral startup instrument transformer (14) of the input of device (22) and input current transformer (2) when main.Coordinate by monitoring unit (16), make the winner carry out phase-shift voltage regulating synchronously simultaneously with device (22) and startup reserve arrangement (23), simultaneously, with phase place, amplitude and the waveform output of identical voltage; When two covering devices through after the phase shift voltage stabilizing, output all is able to close phase time, closes a floodgate and drops into the output protection switch (10) of reserve arrangement (23), the output of two covering devices is carried out and is united phase; When starting instrument transformer (14) and input current transformer (2) when all not having current signal; show that the electric locomotive load left neutral section (26); at this moment; turn-off the full control inverter bridge (7) of reserve arrangement (23); and the output protection switch (10) of disconnection reserve arrangement (23); afterwards, the master returns to reset condition with device (22), promptly keeps the phase place of input A end.When main with device (22) when catastrophe failure such as being short-circuited after reserve arrangement (23) closes mutually simultaneously; then pass through protection by monitoring unit (16); disconnect the power supply that A is got access to grid mutually with B mutually; when any progressive phase shift supply unit generating device fault, then an open failure device input protection switch (1) and output protection switch (10) get final product.
Second kind of united mode is, reserve arrangement (23) substitutes main with device (22), it is characterized in that, when having signal to export simultaneously, show that the electric locomotive load has entered neutral section (26) with distolateral startup instrument transformer (14) of the input of device (22) and input current transformer (2) when main.Coordinate by monitoring unit (16), make the winner carry out phase-shift voltage regulating synchronously simultaneously with device (22) and startup reserve arrangement (23), simultaneously, with phase place, amplitude and the waveform output of identical voltage; When two covering devices through after the phase shift voltage stabilizing, when the phase place of output voltage, amplitude and waveform reach target, close a floodgate and drop into the output protection switch (10) of reserve arrangement (23), the output of two covering devices carried out and united phase; After closing success mutually; turn-off main full control inverter bridge (7) in order with device (22); disconnect main output protection switch (10) with device (22); continue to the electric that moves (33) by reserve arrangement (23); when the input current transformer (2) of reserve arrangement (23) when not having current signal; illustrate that load has arrived the B net-fault supply arm that joins; after this, turn-off the full control inverter bridge (7) of reserve arrangement (23); disconnect the output protection switch of reserve arrangement (23); close a floodgate and drop into main output protection switch (10) with device (22); starting the master makes the phase place of its output reach the phase place of input A end with device (22).When leading with catastrophe failures such as device (22) and reserve arrangement (23) are short-circuited simultaneously; then pass through protection by monitoring unit (16); disconnect the power supply that A is got access to grid mutually with B mutually; when any progressive phase shift supply unit generating device fault, then an open failure device input protection switch (1) and output protection switch (10) get final product.
Claims (9)
1, the single-phase progressive phase shift supply unit of a kind of high pressure capable of being combined is characterized in that: be made up of boost parallel connection, output protection switch and the control device of output transformer, reactor and resistance of input protection switch, input current transformer, input transformer, friendship orthogonal phase shift block, reactance type; Input protection switch (1) through input current transformer (2), be connected to former limit one end of input rectifying transformer (3), and the other end on former limit is connected with rail (31); The inferior limit of input rectifying transformer (3) connects the input of best friend's orthogonal phase shift block (4); Hand over two outputs of orthogonal phase shift block (4) to be connected to boost two inputs on the former limit of output transformer (30) of reactance type, the boost end on inferior limit of output transformer (30) of reactance type is connected to the input of reactor (8), and the other end on inferior limit is connected with rail (31); The parallel connection of reactor (8) and a resistance (9), the output that back in parallel forms is connected with output protection switch (10) input, and the output of output protection switch (10) can power to the load as the output of device; Control device is made up of monitoring unit (16), a cover DSP control unit (17) and one group of power driver module (18), communicate by letter by optical fiber or twisted-pair feeder between monitoring unit (16) and the DSP control unit (17), and between DSP control unit (17) and the power driver module (18) by optical fiber communication, power driver module (18) is connected with handing over the orthogonal phase shift block.
The input A of this device is connected with an input single-phase voltage transducer (11), and output C is connected with an output single-phase voltage transducer (13), and the B net-fault supply arm (29) that joins is connected with one and closes phase voltage transducer (12); This device is connected with a startup instrument transformer (14) at input, is connected with a startup instrument transformer (15) at the B net-fault supply arm (29) that joins.
2, the single-phase progressive phase shift supply unit of a kind of high pressure capable of being combined according to claim 1 is characterized in that: above-mentioned friendship orthogonal phase shift block (4) is that the serial connection of controlling inverter bridge (7) by rectifier bridge or full-controlled rectifier bridge (5), shaping loop (6), entirely forms.
3, the single-phase progressive phase shift supply unit of a kind of high pressure capable of being combined according to claim 1, it is characterized in that: above-mentioned friendship orthogonal phase shift block can be connected in parallel by the friendship orthogonal phase shift block group of two or more synchronous operations simultaneously, wherein, each hands over an input serial connection input contactor (20) of orthogonal phase shift block (4), an output serial connection output contactor (21); A plurality of friendship orthogonal phase shift block (4) can be shared a cover DSP control unit (17), also can each hand over orthogonal phase shift block (4) with a cover DSP control unit (17), realize that by communication synchronous coordination moves between each DSP control unit (17).
4, the single-phase progressive phase shift supply unit of a kind of high pressure capable of being combined according to claim 1, it is characterized in that: above-mentioned friendship orthogonal phase shift block can be connected in series by the friendship orthogonal phase shift block group of two or more synchronous operations simultaneously, a plurality of friendship orthogonal phase shift block (4) can be shared a cover DSP control unit (17), also can hand over orthogonal phase shift block (4) configuration one cover DSP control unit (17), realize the synchronous coordination operation by communication between each DSP control unit (17) for each.
5, the single-phase progressive phase shift supply unit of a kind of high pressure capable of being combined according to claim 1, it is characterized in that: can be two cover parameter and the identical progressive phase shift supply unit redundant configuration of performance, be used, two covering devices can be shared a cover monitoring unit (16), and the shared cover reactance type output transformer (30) that boosts, a shared cover reactor (8) and a resistance (9), a shared cover output protection switch (10), and every suit hands over the output of orthogonal phase shift block (4) respectively to dispose a cover output contactor (21), and the output of the output contactor (21) of two covering devices can connect together; Two covering devices have independently input respectively, and output links together all to identical electric; Main input with device (22) is the A end, and A holds with the A net-fault supply arm (27) that joins and is connected; The input of reserve arrangement (23) is a B end, and B end and the B net-fault supply arm (29) that joins is connected, and to be the C end by common output section be connected with neutrality two covering devices.
6, the single-phase progressive phase shift supply unit of a kind of high pressure capable of being combined according to claim 1 is characterized in that: two cover parameter and the identical progressive phase shift supply unit redundant configuration of performance can be united use; Main independent fully with device (22) and reserve arrangement (23), output single-phase voltage transducer (13) is set between the input of the output of the reactor of every covering device (8) and output protection module (10), can close phase with the output that guarantees two covering devices; The master is respectively equipped with input with device (22) and reserve arrangement (23), links together on output is electric, can both be to same electric; Main input protection switch with device (22) and reserve arrangement (23) always is in and closes the position, and main output protection switch (10) with device (22) is in and closes the position, and the output protection switch (10) of reserve arrangement (23) is in the branch position; Main input with device (22) is the A end, and output is the C end, and the phase place of the contact line that the A end is connected is the A phase; The input of reserve arrangement (23) is the B end, and output is the C end, and the phase place of the contact line that the B end connects is the B phase; The output C of two covering devices all is connected with neutral section; The output of two covering devices can be closed for a long time and is in parallel, and also can close in short-term to be in parallel, and is only closing when being in parallel, and all input protection switch (1) the output protection switches (10) of two covering devices just are in closing position simultaneously.
7, the single-phase progressive phase shift supply unit of high pressure capable of being combined according to claim 1, it is characterized in that: above-mentioned startup instrument transformer can be a voltage transformer, parallel in contact line supply arm (27) one section contact wire of installation (28) that input is distolateral with contact line supply arm (27), an end that starts in instrument transformer (14) input links to each other with this section contact wire (28), and the other end links to each other with rail (31).
8, the single-phase progressive phase shift supply unit of high pressure capable of being combined according to claim 1, it is characterized in that: above-mentioned startup instrument transformer can be a current transformer, then start instrument transformer (14) and can be connected in series on the contact line supply arm (27), and with the distance of the section of going into fracture (24) length less than a train.
9, the single-phase progressive phase shift supply unit of high pressure capable of being combined according to claim 2, it is characterized in that: above-mentioned shaping loop (6) is reactor of series connection in the anodal loop of the DC link of rectifier bridge (5) output, one group of electrochemical capacitor in parallel and high frequency capacitance, diode, IGBT electronic switch and resistance between positive and negative electrode are with arrangement dc waveform and absorbing high-frequency signal; The input side of output transformer (30) reactance of connecting of boosting of above-mentioned reactance type.
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| Application Number | Priority Date | Filing Date | Title |
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| CNU2009200953098U CN201349181Y (en) | 2009-01-14 | 2009-01-14 | Combinable high voltage single phase gradual dephasing supply apparatus |
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| CNU2009200953098U CN201349181Y (en) | 2009-01-14 | 2009-01-14 | Combinable high voltage single phase gradual dephasing supply apparatus |
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| CN201349181Y true CN201349181Y (en) | 2009-11-18 |
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| CNU2009200953098U Expired - Fee Related CN201349181Y (en) | 2009-01-14 | 2009-01-14 | Combinable high voltage single phase gradual dephasing supply apparatus |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101783596A (en) * | 2010-02-10 | 2010-07-21 | 深圳市科陆电子科技股份有限公司 | Energy supply system and method of electronic type high-voltage electric mutual inductor |
| CN103427608A (en) * | 2013-08-14 | 2013-12-04 | 株洲变流技术国家工程研究中心有限公司 | Mobile type high-power alternating current (AC)/direct current (DC) hybrid power supply device |
| WO2017005017A1 (en) * | 2015-07-06 | 2017-01-12 | 北京交通大学 | Intelligent electric phase splitting device for alternating-current electrified railway |
| CN108173421A (en) * | 2016-12-07 | 2018-06-15 | 中车株洲电力机车研究所有限公司 | A kind of subregion train cross phase-separating section uninterrupted power system |
| RU2759251C1 (en) * | 2021-03-03 | 2021-11-11 | Федеральное государственное бюджетное образовательное учреждение высшего образования «Юго-Западный государственный университет» (ЮЗГУ) (RU) | Fast defuzzifier using triangular membership functions |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101783596A (en) * | 2010-02-10 | 2010-07-21 | 深圳市科陆电子科技股份有限公司 | Energy supply system and method of electronic type high-voltage electric mutual inductor |
| CN103427608A (en) * | 2013-08-14 | 2013-12-04 | 株洲变流技术国家工程研究中心有限公司 | Mobile type high-power alternating current (AC)/direct current (DC) hybrid power supply device |
| CN103427608B (en) * | 2013-08-14 | 2015-09-09 | 株洲变流技术国家工程研究中心有限公司 | A kind of mobile high-power alternating current-direct current hybrid power supply device |
| WO2017005017A1 (en) * | 2015-07-06 | 2017-01-12 | 北京交通大学 | Intelligent electric phase splitting device for alternating-current electrified railway |
| CN108173421A (en) * | 2016-12-07 | 2018-06-15 | 中车株洲电力机车研究所有限公司 | A kind of subregion train cross phase-separating section uninterrupted power system |
| CN108173421B (en) * | 2016-12-07 | 2020-05-05 | 中车株洲电力机车研究所有限公司 | Train passing neutral section uninterrupted power system of section station |
| RU2759251C1 (en) * | 2021-03-03 | 2021-11-11 | Федеральное государственное бюджетное образовательное учреждение высшего образования «Юго-Западный государственный университет» (ЮЗГУ) (RU) | Fast defuzzifier using triangular membership functions |
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