CN102638019A - Direct-current catenary de-icing method of high-speed electrified railway - Google Patents
Direct-current catenary de-icing method of high-speed electrified railway Download PDFInfo
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- CN102638019A CN102638019A CN2012101012219A CN201210101221A CN102638019A CN 102638019 A CN102638019 A CN 102638019A CN 2012101012219 A CN2012101012219 A CN 2012101012219A CN 201210101221 A CN201210101221 A CN 201210101221A CN 102638019 A CN102638019 A CN 102638019A
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Abstract
Description
Technical field
The present invention relates to a kind of DC ice melting method that is applied to field of power supply line, especially a kind of high-speed electric railway contact line DC ice melting method.
Background technology
In recent years, China's electric railway construction has got into the high speed development stage, and novel high-power is handed over especially main force's vehicle of high-speed railway of orthogonal electric locomotive progressively becoming China's electric railway.Especially wherein tractive power supply system is being undertaken the important task that electric energy is provided to bullet train especially, is that train safe is reliable, the key factor of efficient operation.
But along with the variation of global temperature, the historical rare ice and snow disaster of congealing has all appearred in China south, Central China, East China, especially in the Hunan, Guizhou, Jiangxi Province's most of areas is disaster-stricken particularly serious, electric power facility has suffered unprecedented destruction.And for electric railway, stop transport and be prone to cause electrified contacting nets to freeze, night big because of the blanking time of train operation.The contact line icing will cause pantograph can't normally get stream, will cause the infringement or the fracture of pantograph when serious, and with safety that influences train and operation on schedule, problem seems particularly outstanding for surpassing the rail track more than the 200km/h speed per hour especially.
At present, in the various solutions for the electric line icing of electric power system, through practical application and expert evaluation, the DC ice melting method is reliable, the most most economical solution at present.And for the electrification railway contact net de-icing method, the content relevant with present patent application mainly contains following document in the middle of prior art:
Document one is a China Railway First Investigation Designing Institute Group Co.,Ltd in application on 07 23rd, 2009, and open on 05 05th, 2010, and publication number is the utility model patent " a kind of electrification railway contact net DC ice melting system " of CN201446892U.The DC ice melting system setting that relates in this utility model patent is fixed in the electric substation; Can't realize portable ice-melt; Bus is connected with the DC ice melting current-limiting apparatus through circuit breaker, isolating switch, and the output cable of DC ice melting current-limiting apparatus constitutes the loop through dc load isolating switch, section post circuit breaker, dc-isolation switch and uplink and downlink contact line.The shortcoming of this system is that AC power adopts single phase power supply, after the rectification wave distortion serious, cause power factor low.
Document two is that China Railway First Investigation Designing Institute Group Co.,Ltd applied on 07 23rd, 2009, and open on 09 01st, 2010, and publication number is the utility model patent " a kind of electrification railway contact net interchange ice melting system " of CN201566513U.The related system of this patent is that contact line exchanges the current limliting ice-melt, is arranged on section post, adopts adjustment ice melting current values such as ice-melt resistance box, ice-melt capacitor box to realize ice-melt.The shortcoming of this method is to adopt the resistance current limliting, and energy loss is big.
Document three is published in the paper " the anti-freezing embodiment of a kind of contact wire to Line for Passenger Transportation " on " electric railway " of 2010 the 4th phases for Li Hanqing.The document propose a kind of in the skylight phase adopt the anti-icing scheme of REgulatable reactor; Though this scheme can effectively reduce active loss; But shortcoming is a power factor lower (0.28～0.3), and contact line itself is bigger to the reactive power that electric power system injects, and can reach 14607kvar/h.
Summary of the invention
The purpose of this invention is to provide a kind of high-speed electric railway contact line DC ice melting method; This DC ice melting method is to the characteristics of high-speed electric railway special line operation; And contact net for power supplying exists long-time the stoppage in transit to cause icing serious night; Influence the present situation of EMUs and high ferro operation; Proposed a kind of high-speed electric railway contact line DC ice melting method, solved the safety hazard that icing brings electric railway, guaranteed bullet train safety, reliable, running on time with minimum power consumption and short time ice-melt.
In order to realize the foregoing invention purpose; The present invention specifically provides a kind of technic relization scheme of high-speed electric railway contact line DC ice melting method; A kind of high-speed electric railway contact line DC ice melting method comprises: the contact line DC de-icing device drops into process and withdraws from process;
Wherein, Contact line DC de-icing device input process comprises: when high-speed electric railway contact line DC ice melting system monitoring to the contact line ice coating state; When proposing the ice-melt demand; By the respective feed connection switch of the long-range disconnection feeder switch combination in power-management centre and the corresponding contact net switch of contact line switches combination; Electric substation is switched to contact line DC ice melting running status from the conventional state of traction power supply; The respective feed connection switch of the DC ice melting fling-cut switch of the DC ice melting fling-cut switch combination that closed again electric substation is relevant with the contact line DC ice melting, the corresponding contact net switch of contact line switches combination and feeder switch combination drops into the contact line DC de-icing device;
The contact line DC de-icing device withdraws from process and comprises: when the contact line DC de-icing device withdraws from; At first stop the operation of contact line DC de-icing device; Break off the DC ice melting fling-cut switch of corresponding DC ice melting fling-cut switch combination, the feeder switch of feeder switch combination and the contact line switches of contact line switches combination again; Thereby disconnection contact line DC de-icing device is connected with electric substation and contact line; And closed corresponding feeder switch and contact line switches, thereby contact line DC ice melting running status is switched to the electric locomotive traction power supply state.
Further improvement as a kind of high-speed electric railway contact line of the present invention DC ice melting method and technology scheme; Contact line DC de-icing device input process comprises from contact line traction power supply state and switches to the step of folk prescription to the DC ice melting state that this step comprises:
S101: break off first feeder switch, the 6th feeder switch, the 7th feeder switch, the 8th feeder switch, the 9th feeder switch, the tenth feeder switch and the 11 feeder switch;
S102: break off first contact line switches, second contact line switches, the 3rd contact line switches, the 4th contact line switches and the 7th contact line switches;
S103: connect the rectifier transformer of interior earth connection to the contact line DC de-icing device of ground connection case in the electric substation, closed second DC ice melting fling-cut switch and the 3rd DC ice melting fling-cut switch;
S104: closed the 4th DC ice melting fling-cut switch and the 5th DC ice melting fling-cut switch;
S105: closed the 7th contact line switches;
S106: closed the 7th feeder switch, the 8th feeder switch, the 9th feeder switch and the tenth feeder switch.
Further improvement as a kind of high-speed electric railway contact line of the present invention DC ice melting method and technology scheme; Contact line DC de-icing device input process comprises the step that switches to twocouese DC ice melting state from contact line traction power supply state, and this step comprises:
S201: break off first feeder switch, the 6th feeder switch, the 7th feeder switch, the 8th feeder switch, the 9th feeder switch, the tenth feeder switch, the 11 feeder switch, the 12 feeder switch and the 13 feeder switch;
S202: break off first contact line switches, second contact line switches, the 3rd contact line switches, the 4th contact line switches, the 5th contact line switches, the 6th contact line switches, the 7th contact line switches and the 8th contact line switches;
S203: connect the rectifier transformer of interior earth connection to the contact line DC de-icing device of ground connection case in the electric substation, closed second DC ice melting fling-cut switch and the 3rd DC ice melting fling-cut switch;
S204: closed the 4th DC ice melting fling-cut switch and the 5th DC ice melting fling-cut switch;
S205: closed the 3rd contact line switches, the 4th contact line switches, the 7th contact line switches and the 8th contact line switches;
S206: closed the 7th feeder switch, the 8th feeder switch, the 9th feeder switch and the tenth feeder switch.
As the further improvement of a kind of high-speed electric railway contact line of the present invention DC ice melting method and technology scheme, the contact line DC de-icing device withdraws from the step that process comprises that the contact line folk prescription withdraws to the DC ice melting state, and this step comprises:
S301: break off the 7th feeder switch, the 8th feeder switch, the 9th feeder switch and the tenth feeder switch;
S302: break off the 7th contact line switches;
S303: break off the 4th DC ice melting fling-cut switch and the 5th DC ice melting fling-cut switch;
S304: break off the second DC ice melting fling-cut switch and the 3rd DC ice melting fling-cut switch, the line of the rectifier transformer of the interior earth connection of ground connection case and contact line DC de-icing device in the disconnection electric substation;
S305: closed first contact line switches, second contact line switches, the 3rd contact line switches and the 4th contact line switches;
S306: closed first feeder switch, the 6th feeder switch, the 7th feeder switch, the 8th feeder switch, feedback nine wiretaps, the tenth feeder switch and the 11 feeder switch.
As the further improvement of a kind of high-speed electric railway contact line of the present invention DC ice melting method and technology scheme, the contact line DC de-icing device withdraws from the step that process comprises that contact line twocouese DC ice melting state withdraws from, and this step comprises:
S401: break off the 7th feeder switch, the 8th feeder switch, the 9th feeder switch and the tenth feeder switch;
S402: break off the 3rd contact line switches, the 4th contact line switches, the 7th contact line switches and the 8th contact line switches;
S403: break off the 4th DC ice melting fling-cut switch and the 5th DC ice melting fling-cut switch;
S404: break off the second DC ice melting fling-cut switch and the 3rd DC ice melting fling-cut switch, the line of the rectifier transformer of the interior earth connection of ground connection case and contact line DC de-icing device in the disconnection electric substation;
S405: closed first contact line switches, second contact line switches, the 3rd contact line switches, the 4th contact line switches, the 5th contact line switches and the 6th contact line switches;
S406: closed first feeder switch, the 6th feeder switch, the 7th feeder switch, the 8th feeder switch, the 9th feeder switch, the tenth feeder switch, the 11 feeder switch, the 12 feeder switch and the 13 feeder switch.
Further improvement as a kind of high-speed electric railway contact line of the present invention DC ice melting method and technology scheme; The DC ice melting method also comprises the reactive power compensation process; The reactive power compensation unit is connected the output of rectifier transformer; The reactive power compensation unit carries out the reactive power compensation harmonic to the high-speed electric railway contact line to be administered, and reduces the capacity of rectifier transformer, the comprehensive regulation quality of power supply.
Further improvement as a kind of high-speed electric railway contact line of the present invention DC ice melting method and technology scheme; The DC ice melting method also comprises and adopts container-type to arrange the contact line DC de-icing device, and the contact line DC de-icing device is transregional through packaged type, stride institute's ice-melting mode or the mode that is fixedly installed in the electric substation is provided with.
As the further improvement of a kind of high-speed electric railway contact line of the present invention DC ice melting method and technology scheme, the DC ice melting method also comprises: the DC ice melting system receives automatic weather station information and the process that receives contact line temperature monitoring unit information.Automatic weather station is gathered weather information through temperature sensor, humidity sensor and air velocity transducer; And be sent to communication processor; Temperature and video information that communication processor is gathered contact line through video camera and infrared radiation thermometer simultaneously, communication processor is sent to meteorology and contact line information receiving unit with the weather information of temperature, video information and the automatic weather station collection of contact line through wireless mode.With plural contact line temperature monitoring cell distribution along the line at railway contact line; Meteorology and contact line information receiving unit receive the information that plural contact line temperature monitoring unit transmits through wireless mode; The state of DC ice melting monitoring and protection unit monitors contact line DC de-icing device, and monitor and protect according to the information butt joint net-fault DC de-icing device that meteorology and contact line information receiving unit transmit.
Through implementing the technical scheme of a kind of high-speed electric railway contact line of the invention described above DC ice melting method, have following technique effect:
(1) the applied device of the present invention can be realized the function central systemization, and package unit is installed in the container, both can realize that packaged type is transregional, stride institute's ice-melt; Hyperbaric chamber and low voltage control chamber isolate; The Operation and Maintenance safe ready can be fixedly installed in again in the traction substation, operation, easy to use; Save cost, also be convenient to lift move and be transported to other electric substations that need ice-melt with automobile;
(2) the applied DC ice melting of the present invention system AC power is made up of traction main transformer secondary side outlet and substation ground case ground wire, guarantees system's three phase supply balance, reduces the negative phase-sequence influence;
(3) contact line heating-up temperature and ice-melt effect are fed back in real time through the contact line device for monitoring temperature by the applied DC ice melting of the present invention system, realize dynamic DC ice melting, and reduce artificial monitoring contact line state;
(4) the present invention proposes a kind of safe, simple, portable DC ice melting system access electric railway traction power supply plan, only need to realize the track remodelling of contact line uplink and downlink series connection safely at the terminal newly-increased switching device of contact line;
(5) DC ice melting system schema of the present invention newly-increased switching device on feeder line, effectively avoided DC ice melting to current transformer, voltage transformer in the existing alternating current traction electric power system, stand with the security implication of power transformer;
(6) the effective intrasystem high order harmonic component of filtering DC ice melting and carry out reactive power compensation of the device described of the present invention, more traditional de-icing method has the advantage of efficient ice-melt.
Description of drawings
In order to be illustrated more clearly in the embodiment of the invention or technical scheme of the prior art; To do to introduce simply to the accompanying drawing of required use in embodiment or the description of the Prior Art below; Obviously, the accompanying drawing in describing below only is some embodiments of the present invention, for those of ordinary skills; Under the prerequisite of not paying creative work, can also obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is the system architecture diagram 1 of a kind of embodiment of the present invention's applied high-speed electric railway contact line DC de-icing device;
Fig. 2 is structural principle Fig. 1 of a kind of embodiment of the applied high-speed electric railway contact line of the present invention DC ice melting system;
Fig. 3 is the structure principle chart of contact line device for detecting temperature in a kind of embodiment of the applied high-speed electric railway contact line of the present invention DC ice melting system;
Fig. 4 is structural principle Fig. 2 of a kind of embodiment of the applied high-speed electric railway contact line of the present invention DC ice melting system;
Fig. 5 is the system architecture diagram 2 of a kind of embodiment of the present invention's applied high-speed electric railway contact line DC de-icing device;
Fig. 6 is the system electrical syndeton schematic diagram of a kind of embodiment of the present invention's applied high-speed electric railway contact line DC de-icing device;
Fig. 7 is the program flow diagram of high-speed electric railway contact line DC ice melting method of the present invention;
Among the figure: 1-contact line DC de-icing device, 11-alternating-current switch unit, the 12-rectifier transformer, the 13-rectifying device itself and control protected location, 14-dc switch unit; 15-reactive power compensation unit, the combination of 16-feeder switch, the combination of 17-contact line switches, the combination of 18-DC ice melting fling-cut switch, 19-power-management centre; 21-the 1st contact line temperature monitoring unit, 22-the 2nd contact line temperature monitoring unit, 23-the 3rd contact line temperature monitoring unit, 2n-n contact line temperature monitoring unit, 201-communication processor; The 202-automatic weather station, 203-wireless transceiver, 204-video camera, 205-infrared radiation thermometer, 206-temperature sensor; The 207-humidity sensor, 208-air velocity transducer, the 3-first traction main transformer, the 4-second traction main transformer, 5-DC ice melting monitoring and protection unit; 6-meteorology and contact line information receiving unit, 101-first contact line switches, 102-second contact line switches, 103-the 3rd contact line switches, 104-the 4th contact line switches; 105-the 5th contact line switches, 106-the 6th contact line switches, 107-the 7th contact line switches, 108-the 8th contact line switches, 1001-first feeder switch; The 1002-second switch, 1003-the 3rd switch, 1004-the 4th switch, 1005-the 5th switch; 1006-the 6th feeder switch, 1007-the 7th feeder switch, 1008-the 8th feeder switch, 1009-the 9th feeder switch; 1010-the tenth feeder switch, 1011-the 11 feeder switch, 1012-the 12 feeder switch, 1013-the 13 feeder switch; The 7-uplink, 8-downlink, 9-bus one, 10-bus two.
Embodiment
To combine the accompanying drawing in the embodiment of the invention below, the technical scheme in the embodiment of the invention is carried out clear, intactly description, obviously, described embodiment only is the present invention's part embodiment, rather than whole embodiment.Based on the embodiment among the present invention, those of ordinary skills are not making the every other embodiment that is obtained under the creative work prerequisite, all belong to the scope of the present invention's protection.
Shown in accompanying drawing 1 to accompanying drawing 7, provided the specific embodiment of a kind of high-speed electric railway contact line of the present invention DC ice melting method, below in conjunction with accompanying drawing and specific embodiment the present invention is described further.
It shown in accompanying drawing 1 embodiment of a kind of high-speed electric railway contact line DC de-icing device of relating among the present invention; Comprise: alternating-current switch unit 11, rectifier transformer 12, rectifier and control protected location 13 and dc switch unit 14; Two inputs of rectifier transformer 12 link to each other with the first traction power supply transformer 3 of electric substation and the secondary side outlet of the second traction power supply transformer 4 respectively through alternating-current switch unit 11; Another input of rectifier transformer 12 links to each other with the ground connection case ground wire of electric substation; The output of rectifier transformer 12 links to each other with rectifier and control protected location 13; The output of rectifier and control protected location 13 links to each other with downlink with the uplink of contact line respectively through dc switch unit 14, heats ice-melt to contact line.The AC power of the described contact line DC de-icing device of the specific embodiment of the invention is made up of the secondary side outlet of traction power supply transformer and the ground wire of substation ground case, has guaranteed the three phase supply balance of system, has reduced the influence of negative phase-sequence effectively.In addition, the present invention adopts the integrated contact line DC ice melting system of function, and the contact line DC de-icing device adopts container-type to arrange; Both can realize that packaged type was transregional, stride institute's ice-melt; Can be fixedly installed in again in the traction substation, operation, easy to use reaches cost-effective purpose.
As a kind of preferred implementation; Contact line DC de-icing device 1 can further include reactive power compensation unit 15; Reactive power compensation unit 15 is connected the output of rectifier transformer 12; Reactive power compensation unit 15 is used for the reactive power compensation harmonic to be administered, and has the capacity that reduces rectifier transformer 11 and the function of the comprehensive regulation quality of power supply.Adopt the effectively intrasystem high order harmonic component of filtering DC ice melting and carry out reactive power compensation of reactive power compensation unit 15, more traditional de-icing method has the advantage of efficient ice-melt.Rectifier transformer 12 further adopts Δ/Y type rectifier transformer.High-speed electric railway contact line DC de-icing device adopts built-in reactive power compensation unit 15 and the rectifier transformer 12 that adopts Δ/Y type; Effectively improved power factor and administered harmonic wave, power factor reduces harmonic when when reducing the rectifier transformer capacity, having avoided DC ice melting increases.The power supply of high-speed electric railway contact line DC ice melting system provides three phase mains by the traction main transformer secondary side outlet of electric substation and the ground wire of ground connection case to rectifier transformer 12; Insert the upper and lower column rule of contact line respectively through DC de-icing device direct current output direct current, thereby form the DC ice melting loop that constitutes by feeder line, DC de-icing device and contact line.The applied DC ice melting of the present invention system has good constant-current characteristics, and output current is adjustable continuously, guarantees to export DC stabilization heating contact line, the contact line ice-melt that Rapid Realization is dissimilar.
Shown in system architecture diagram and system electrical johning knot composition that accompanying drawing 1 and 6 is depicted as the applied a kind of high-speed electric railway contact line DC de-icing device of difference the present invention; The T feeder line of the first traction power supply transformer 3 in the traction substation, the T feeder line of the second traction power supply transformer 11 constitute the three-phase incoming power with the ground wire of substation ground case through the alternating-current switch unit, are depressurized to U through the rectifier transformer 12 that adopts Δ/Y type connected mode ACInput as rectifier and control protected location 13; Three-phase controlled bridge rectifier and control protected location 13 through being made up of semiconductor device (like rectifier diode, thyristor, IGBT, IGCT etc.) exported continuously adjustable direct current is connected to contact line through dc switch unit 14 upper and lower column rule again.Wherein, The first traction power supply transformer 3 shown in accompanying drawing 6 and the second traction power supply transformer 4 include two son traction main transformers of redundancy backup each other; When electrification railway contact net DC ice melting system moved, the first traction power supply transformer 3 and the second traction power supply transformer 4 all only had the operation of estrade traction main transformer.
Shown in accompanying drawing 2 and 4, be respectively shown in the structure principle chart of embodiment of the applied a kind of high-speed electric railway contact line DC ice melting of the present invention system; Contact line DC ice melting system also further comprises DC ice melting monitoring and protection unit 5, meteorology and contact line information receiving unit 6 and plural contact line temperature monitoring unit; Plural contact line temperature monitoring cell distribution is along the line railway contact line; DC ice melting monitoring and protection unit 5 links to each other with contact line DC de-icing device 1; Meteorology and contact line information receiving unit 6 link to each other with DC ice melting monitoring and protection unit 5; Meteorology and contact line information receiving unit 6 receive the information that plural contact line temperature monitoring unit transmits through wireless mode; The state of DC ice melting monitoring and protection unit 5 monitoring contact line DC de-icing devices 1, and monitor and protect according to the information butt joint net-fault DC de-icing device 1 that meteorology and contact line information receiving unit 6 transmit.The DC ice melting monitoring and protection unit 5 of the applied contact line DC ice melting of the present invention system feeds back contact line heating-up temperature and ice-melt effect in real time through contact line temperature monitoring unit, realizes dynamic DC ice melting, and reduces artificial monitoring contact line state.
Shown in accompanying drawing 3; Contact line temperature monitoring unit also further comprises communication processor 201, automatic weather station 202, video camera 204, infrared radiation thermometer 205, temperature sensor 206, humidity sensor 207 and air velocity transducer 208; Communication processor 201 links to each other with automatic weather station 202, video camera 204 and infrared radiation thermometer 205 respectively; Automatic weather station 202 links to each other with temperature sensor 206, humidity sensor 207 and air velocity transducer 208 respectively; Automatic weather station 202 is gathered weather information through temperature sensor 206, humidity sensor 207 and air velocity transducer 208; And be sent to communication processor 201; Temperature and video information that communication processor 201 is gathered contact line through video camera 204 and infrared radiation thermometer 205 simultaneously, the weather information that communication processor 201 is gathered temperature, video information and the automatic weather station 202 of contact line is sent to meteorology and contact line information receiving unit 6 through wireless mode by wireless transceiver 203.The present invention needs along the some contact line temperature monitorings of trunk railway dispersing apparatus unit; As: the first contact line temperature monitoring unit 21, the second contact line temperature monitoring unit 22; Up to n contact line temperature monitoring unit 2n, and adopt station, wireless transmission machine station trunking scheme that state and the signal that each detects website is sent to DC ice melting monitoring and protection unit 5.Through real-time monitoring and feedback contact line ice-melt state, DC ice melting monitoring and protection unit 5 sends alarm ice-melt demand information and control ice-melt operating state according to meteorology.Shown in accompanying drawing 5; DC ice melting monitoring and protection unit 5 is except with the rectifier of contact line DC de-icing device 1 and control protected location 13 link to each other; Also link to each other, for each key position in the contact line DC de-icing device 1 provides monitoring and protection with alternating-current switch unit 11, dc switch unit 14 and reactive power compensation unit 15 etc.
Be depicted as the embodiment of the applied a kind of high-speed electric railway contact line DC ice melting of the present invention system access scheme like accompanying drawing 6.Contact line DC ice melting system also further comprises feeder switch combination 16, contact line switches combination 17 and DC ice melting fling-cut switch combination 18 except comprising contact line DC de-icing device 1.DC ice melting fling-cut switch combination 18 further comprises the second DC ice melting fling-cut switch 1002, the 3rd DC ice melting fling-cut switch 1003, the 4th DC ice melting fling-cut switch 1004 and the 5th DC ice melting fling-cut switch 1005; Feeder switch combination 16 is connected between traction power supply bus and the contact line, and the traction power supply bus comprises bus 1 and bus 2 10.The second DC ice melting fling-cut switch 1002 and the 3rd DC ice melting fling-cut switch 1003 are connected between the input and feeder switch combination 16 of contact line DC de-icing device 1; The 4th DC ice melting fling-cut switch 1004 and the 5th DC ice melting fling-cut switch 1005 are connected between the output and feeder switch combination 16 of contact line DC de-icing device 1; Contact line switches combination 17 links to each other with contact line.Contact line DC ice melting system; Only need at the newly-increased switching device of the end of contact line; Can realize the track remodelling of contact line uplink and downlink series connection safely, and propose a kind of safe, simple, technical scheme that portable DC ice melting system inserts electric railway traction power supply system.Simultaneously, contact line DC ice melting system has increased switching device newly on feeder line, effectively avoided DC ice melting to current transformer, voltage transformer in the existing alternating current traction electric power system, stand with the security implication of power transformer.
Feeder switch combination 16 also further comprises first feeder switch 1001, the 6th feeder switch 1006, the 7th feeder switch 1007, the 8th feeder switch 1008, the 9th feeder switch 1009, the tenth feeder switch the 1010, the 11 feeder switch the 1011, the 12 feeder switch 1012 and the 13 feeder switch 1013.The 6th feeder switch 1006 is connected between bus 1 and the 7th feeder switch 1007, and the other end of the 7th feeder switch 1007 links to each other with the uplink of contact line 7; Said the 8th feeder switch 1008 is connected between the bus 1 and first feeder switch 1001, and the other end of first feeder switch 1001 links to each other with the 9th feeder switch 1009, and the other end of the 9th feeder switch 1009 links to each other with the downlink of contact line 8; The tenth feeder switch 1010 is connected between bus 2 10 and the 11 feeder switch 1011, and the other end of the 11 feeder switch 1011 links to each other with the downlink of contact line 8; The 12 feeder switch 1012 is connected between bus 2 10 and the 13 feeder switch 1013, and the other end of the 13 feeder switch 1013 links to each other with the uplink of contact line 7.
Contact line switches combination 17 also further comprises first contact line switches 101, second contact line switches 102, the 3rd contact line switches 103, the 4th contact line switches 104, the 5th contact line switches 105, the 6th contact line switches 106, the 7th contact line switches 107 and the 8th contact line switches 108.First contact line switches 101, the 3rd contact line switches 103 and the 5th contact line switches 105 are connected between the F feeder line and T feeder line of uplink 7 of contact line; Second contact line switches 102, the 4th contact line switches 104 and the 6th contact line switches 106 are connected between the F feeder line and T feeder line of downlink 8 of contact line; The 7th contact line switches 107 and the 8th contact line switches 108 are connected between the T feeder line of uplink 7 and downlink 8 of contact line.
The second DC ice melting fling-cut switch 1002 further is connected between the 8th feeder switch 1008, first feeder switch 1001 and between the input of power supply leading point A1 that links to each other with the T1 feeder line of bus 1 and contact line DC de-icing device 1; The 3rd DC ice melting fling-cut switch 1003 is connected between the tenth feeder switch the 1010, the 11 feeder switch 1011 and between another input of power supply leading point A2 that links to each other with the T2 feeder line of bus 2 10 and contact line DC de-icing device 1; Described the 4th DC ice melting fling-cut switch 1004 is connected between the 6th feeder switch 1006, the 7th feeder switch 1007 and between the output Ud+ of ice-melt access point B1 that links to each other with the T1 feeder line of bus 1 and contact line DC de-icing device 1; Described the 5th DC ice melting fling-cut switch 1005 is connected between the 9th feeder switch 1009, first feeder switch 1001 and between the output Ud-of ice-melt access point B2 that links to each other with the T1 feeder line of bus 1 and contact line DC de-icing device 1.
This mode specifically is fixed in traction substation with contact line DC de-icing device 1; The traction power supply transformer is an example with autotransformer (AT) supply power mode; On the T1 supply arm on the leading point A1 of power supply, the T2 supply arm in power supply leading point A2 and the traction substation earth connection constitute the three-phase incoming power of rectifier transformer 12; The output dc voltage Ud+ of contact line DC de-icing device 1 and Ud-insert ice-melt access point B1 place and the ice-melt access point B2 place of supply arm T1 respectively, and the some B3 on this ice-melt access point and the contact line all constitutes the ice-melt loop with putting B4, some B5 and putting B6.The rectifier transformer 12 of DC de-icing device can be introduced the various main transformer power supply forms that are adapted to electric railway, as: Y/ Δ, V/V, the SCOTT modes of connection such as (Scotts), and, can realize certain interval or transregional DC ice melting according to draught line length.
The embodiment of a kind of high-speed electric railway contact line DC ice melting method shown in accompanying drawing 7, contact line DC ice melting method comprises: the contact line DC de-icing device drops into process and withdraws from process.Contact line DC de-icing device input process comprises:
When high-speed electric railway contact line DC ice melting system monitoring to the contact line ice coating state; When proposing the ice-melt demand; By the respective feed connection switch of power-management centre 19 long-range disconnection feeder switch combinations 16 and the corresponding contact net switch of contact line switches combination 17; Electric substation is switched to contact line DC ice melting running status from the conventional state of traction power supply; The respective feed connection switch of the DC ice melting fling-cut switch of the DC ice melting fling-cut switch combination 18 that closed again electric substation is relevant with the contact line DC ice melting, the corresponding contact net switch of contact line switches combination 17 and feeder switch combination 16 drops into contact line DC de-icing device 1.In the accompanying drawing 6, power-management centre 19 can the Long-distance Control feeder switch various switches in combination 16, contact line switches combination 17 and the DC ice melting fling-cut switch combination 18.Its concrete step that drops into is described below:
Contact line DC de-icing device input process comprises from contact line traction power supply state and switches to the step of folk prescription to the DC ice melting state that this step comprises:
S101: break off first feeder switch 1001, the 6th feeder switch 1006, the 7th feeder switch 1007, the 8th feeder switch 1008, the 9th feeder switch 1009, the tenth feeder switch 1010 and the 11 feeder switch 1011;
S102: break off first contact line switches 101, second contact line switches 102, the 3rd contact line switches 103, the 4th contact line switches 104 and the 7th contact line switches 107;
S103: connect the rectifier transformer 12 of interior earth connection to the contact line DC de-icing device 1 of ground connection case in the electric substation, closed second DC ice melting fling-cut switch 1002 and the 3rd DC ice melting fling-cut switch 1003;
S104: closed the 4th DC ice melting fling-cut switch 1004 and the 5th DC ice melting fling-cut switch 1005;
S105: closed the 7th contact line switches 107;
S106: closed the 7th feeder switch 1007, the 8th feeder switch 1008, the 9th feeder switch 1009 and the tenth feeder switch 1010.
The contact line DC de-icing device drops into process and further comprises the step that switches to twocouese DC ice melting state from contact line traction power supply state, and this step comprises:
S201: break off first feeder switch 1001, the 6th feeder switch 1006, the 7th feeder switch 1007, the 8th feeder switch 1008, the 9th feeder switch 1009, the tenth feeder switch the 1010, the 11 feeder switch the 1011, the 12 feeder switch 1012 and the 13 feeder switch 1013;
S202: break off first contact line switches 101, second contact line switches 102, the 3rd contact line switches 103, the 4th contact line switches 104, the 5th contact line switches 105, the 6th contact line switches 106, the 7th contact line switches 107 and the 8th contact line switches 108;
S203: connect the rectifier transformer 12 of interior earth connection to the contact line DC de-icing device 1 of ground connection case in the electric substation, closed second DC ice melting fling-cut switch 1002 and the 3rd DC ice melting fling-cut switch 1003;
S204: closed the 4th DC ice melting fling-cut switch 1004 and the 5th DC ice melting fling-cut switch 1005;
S205: closed the 3rd contact line switches 103, the 4th contact line switches 104, the 7th contact line switches 107 and the 8th contact line switches 108;
S206: closed the 7th feeder switch 1007, the 8th feeder switch 1008, the 9th feeder switch 1009 and the tenth feeder switch 1010.
The contact line DC de-icing device withdraws from process and comprises: when the contact line DC de-icing device withdraws from; At first stop the operation of contact line DC de-icing device; Break off the DC ice melting fling-cut switch of corresponding DC ice melting fling-cut switch combination 18, the feeder switch of feeder switch combination 16 and the contact line switches of contact line switches combination 17 again; Thereby disconnection contact line DC de-icing device is connected with electric substation and contact line; And closed corresponding feeder switch and contact line switches, thereby contact line DC ice melting running status is switched to the electric locomotive traction power supply state.It is specific as follows said that it withdraws from step:
The contact line DC de-icing device withdraws from the step that process comprises that further the contact line folk prescription withdraws to the DC ice melting state, and this step comprises:
S301: break off the 7th feeder switch 1007, the 8th feeder switch 1008, the 9th feeder switch 1009 and the tenth feeder switch 1010;
S302: break off the 7th contact line switches 107;
S303: break off the 4th DC ice melting fling-cut switch 1004 and the 5th DC ice melting fling-cut switch 1005;
S304: break off the second DC ice melting fling-cut switch 1002 and the 3rd DC ice melting fling-cut switch 1003, the line of the rectifier transformer 12 of the interior earth connection of ground connection case and contact line DC de-icing device 1 in the disconnection electric substation;
S305: closed first contact line switches 1010, second contact line switches 102, the 3rd contact line switches 103 and the 4th contact line switches 104;
S306: closed first feeder switch 1001, the 6th feeder switch 1006, the 7th feeder switch 1007, the 8th feeder switch 1008, feedback nine wiretaps 1009, the tenth feeder switch 1010 and the 11 feeder switch 1011.
The contact line DC de-icing device withdraws from the step that process comprises that further contact line twocouese DC ice melting state withdraws from, and this step comprises:
S401: break off the 7th feeder switch 1007, the 8th feeder switch 1008, the 9th feeder switch 1009 and the tenth feeder switch 1010;
S402: break off the 3rd contact line switches 103, the 4th contact line switches 104, the 7th contact line switches 107 and the 8th contact line switches 108;
S403: break off the 4th DC ice melting fling-cut switch 1004 and the 5th DC ice melting fling-cut switch 1005;
S404: break off the second DC ice melting fling-cut switch 1002 and the 3rd DC ice melting fling-cut switch 1003, the line of the rectifier transformer 12 of the interior earth connection of ground connection case and contact line DC de-icing device 1 in the disconnection electric substation;
S405: closed first contact line switches 101, second contact line switches 102, the 3rd contact line switches 103, the 4th contact line switches 104, the 5th contact line switches 105 and the 6th contact line switches 106;
S406: closed first feeder switch 1001, the 6th feeder switch 1006, the 7th feeder switch 1007, the 8th feeder switch 1008, the 9th feeder switch 1009, the tenth feeder switch the 1010, the 11 feeder switch the 1011, the 12 feeder switch 1012 and the 13 feeder switch 1013.
The DC ice melting method also further comprises the reactive power compensation process; Reactive power compensation unit 15 is connected the output of rectifier transformer 12; The 15 pairs of high-speed electric railway contact lines in reactive power compensation unit carry out the reactive power compensation harmonic and administer; And reduce the capacity of rectifier transformer 11, the comprehensive regulation quality of power supply.
The DC ice melting method also further comprises and adopts container-type to arrange contact line DC de-icing device 1, and contact line DC de-icing device 1 is transregional through packaged type, stride institute's ice-melting mode or the mode that is fixedly installed in the electric substation is provided with.
The DC ice melting method also further comprises: the DC ice melting system receives automatic weather station information and the process that receives contact line temperature monitoring unit information.Automatic weather station 202 is gathered weather information through temperature sensor 206, humidity sensor 207 and air velocity transducer 208; And be sent to communication processor 201; Temperature and video information that communication processor 201 is gathered contact line through video camera 204 and infrared radiation thermometer 205 simultaneously, the weather information that communication processor 201 is gathered temperature, video information and the automatic weather station 202 of contact line is sent to meteorology and contact line information receiving unit 6 through wireless mode; With plural contact line temperature monitoring cell distribution along the line at railway contact line; Meteorology and contact line information receiving unit 6 receive the information that plural contact line temperature monitoring unit transmits through wireless mode; The state of DC ice melting monitoring and protection unit 5 monitoring contact line DC de-icing devices 1, and monitor and protect according to the information butt joint net-fault DC de-icing device 1 that meteorology and contact line information receiving unit 6 transmit.
To the above-mentioned explanation of the disclosed embodiments, make this area professional and technical personnel can realize or use the present invention.Multiple modification to these embodiment will be conspicuous concerning those skilled in the art, and defined General Principle can realize under the situation that does not break away from the spirit or scope of the present invention in other embodiments among this paper.Therefore, the present invention will can not be restricted to these embodiment shown in this paper, but will meet and principle disclosed herein and features of novelty the wideest corresponding to scope.
Claims (8)
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| CN201210101221.9A CN102638019B (en) | 2012-04-09 | 2012-04-09 | Direct-current catenary de-icing method of high-speed electrified railway |
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| CN201210101221.9A CN102638019B (en) | 2012-04-09 | 2012-04-09 | Direct-current catenary de-icing method of high-speed electrified railway |
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| CN103490645A (en) * | 2013-09-23 | 2014-01-01 | 株洲变流技术国家工程研究中心有限公司 | Single-phase electrified railway contact net direct-current deicing device and system |
| CN105466565A (en) * | 2014-09-29 | 2016-04-06 | 株洲变流技术国家工程研究中心有限公司 | High-speed train catenary DC ice-melting load temperature monitoring system |
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| CN102638019B (en) | 2015-02-25 |
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