CN203039357U - Section power supply and state measurement and control apparatus for parallel traction net at end of double-line railway - Google Patents
Section power supply and state measurement and control apparatus for parallel traction net at end of double-line railway Download PDFInfo
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- CN203039357U CN203039357U CN 201220633553 CN201220633553U CN203039357U CN 203039357 U CN203039357 U CN 203039357U CN 201220633553 CN201220633553 CN 201220633553 CN 201220633553 U CN201220633553 U CN 201220633553U CN 203039357 U CN203039357 U CN 203039357U
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- contact line
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Abstract
The utility model discloses a section power supply and state measurement and control apparatus for a parallel traction net at an end of a double-line railway. With sections (about 10km) of the railway being a unit, sectioning segments and switching stations of an overhead contact line are additionally disposed at a boundary of the sections. The switching stations comprise breakers, current transformers, voltage transformers and measurement and control units. The breakers and the current transformers in series connection with the breakers are in bridge connection at two ends of the sectioning segments of the overhead contact line. The measurement and control units are connected with a traction substation or a dispatching chamber via a data synchronous collection and transmission network. Through adoption of the sectioning segments and the switching stations at the sections and through introduction of state criteria, operation conditions of an electrified train on the traction net can be known timely and various faults can be found, isolated and handled timely and accurately, thereby guaranteeing continuous power supply and operation of fault-free sections, minimizing a power failure scope and further enhancing reliability of power supply of the traction net. The apparatus of the utility model is low in investment, is convenient to enforce, is suitable for employment of new lines and is also convenient for reconstruction of old lines.
Description
Technical field
The terminal traction net in parallel of a kind of double track railway that the utility model relates to alternating current gasification railway divides section power supply and state measure and control device.
Background technology
The traction power supply system of electric railway is made up of traction substation and traction net, and the traction net is made up of contact line (T), track (R and ground).In order to improve the power supply capacity of traction net, reduce the relative independentability that supply power voltage and energy loss keep the up-downgoing contact line again, be that section post is with uplink and downlink contact line (T) parallel connection at double track railway traction net end usually.But, to make when last (descending) row contact line (T) place fault (descend) row feeder line and section post to trip on the traction substation, thereby make each the interval all power failure of (descending) row contact line, this will influence normal power supply and the operation of fault-free shuttle train, reduce power supply reliability.
How in time, find exactly, isolate and get rid of fault, the normal power supply that guarantees the fault-free interval to greatest extent is the important behave that ensures railway security, good operation.
Summary of the invention
The purpose of this utility model just provides the terminal traction net in parallel power supply of a kind of double track railway and state measure and control device, in time, the running status of netting is drawn in reflection exactly, judge fault type and the abort situation of traction net, and isolate rapidly and fix a breakdown, dwindle fault and coverage to greatest extent, improve power supply reliability, ensure train safe, running on time better.
The utility model solves its technical problem, and the technical scheme that adopts is:
The terminal traction net in parallel of a kind of double track railway divides section power supply and state measure and control device, is unit with the interval (about 10km) of railway, sets up the electric segmentation of contact line (T) (FD) and switching station (KB) at interval boundary; Switching station (KB) comprises circuit breaker (DL) and current transformer (LH), voltage transformer (YH) and measurement and control unit; Current transformer (LH) cross-over connection of circuit breaker (DL) and series connection with it is in the electric segmentation of contact line (T) (FD) two ends, and electric segmentation (FD) is serially connected in the contact line; Voltage transformer (YH) is connected in parallel on the contact line (T); The measuring junction of the measuring junction of current transformer (LH), voltage transformer (YH) all links to each other with measurement and control unit with the control end of circuit breaker (DL); Measurement and control unit is connected with traction substation or control room with transmission network by synchronous data sampling.
Operation principle of the present utility model is:
The voltage of measuring when the voltage transformer (YH) of switching station (KB) is all in normal range (NR) the time, if the difference between currents value (supposing that traction substation to section post direction is the electric current positive direction) of the switching station (KB) at online certain the interval two ends of traction is not equal to zero, the electric current difference of the switching station at other interval two ends (KB) all equals zero, judge that then there is charged train operation in this interval, other intervals all do not have charged train.Simultaneously, if this electric current difference judges then that greater than zero the charged train in this interval is in traction working condition, if the electric current difference less than zero the time, judges that then the charged train in this interval is in regeneration (generating) operating mode.In like manner can judge the charged train operation state in other intervals; The particular location of charged train can be calculated through trend by the electric current that the voltage and current instrument transformer (LH) that the voltage transformer (YH) of this two ends switching station (KB) of synchronous collection is measured is measured and obtain.
When the voltage of measuring when the voltage transformer (YH) of switching station (KB) is lower than normal value, judge traction net fault, divide A, B and C3 kind situation:
A, be earth fault if judge certain interval contact line branch road one end, the other end is disconnection fault, and then: (1) utilizes the particular location of the synchronous simultaneously-measured voltage of voltage transformer (YH) summation current transformer (LH) of switching station (KB) of earth fault one end and calculation of short-circuit current short-circuit reactance and corresponding ground connection (with broken string) fault thereof; (2) with season should two ends, interval switching stations (KB) the equal separating brake of circuit breaker (DL), other interval normal power supplies that keep.
B, be earth fault if judge certain interval contact line branch road two ends, then: the particular location of the voltage that (1) is measured according to the voltage transformer (YH) of an end switching station and synchronous simultaneously-measured calculation of short-circuit current short-circuit reactance and corresponding earth fault thereof; (2) with season should the two ends, interval circuit breaker (DL) separating brake together of switching station (KB), overlap again, successful reclosing recovers normal power supply, reclosing failure makes circuit breaker (DL) separating brake again of the switching station (KB) at these two ends, other interval normal power supplies that keep.
Contact line (T) branch road breaks down simultaneously in C, two and the above interval, can handle respectively with reference to A, B.
Compared with prior art, the beneficial effects of the utility model are:
One, the utility model is by contact line electricity segmentation and switching station and introduce the state criterion between the setting area in the terminal in parallel traction net of double track railway, can allow the operator on duty in electric substation or control room in time understand and grasp (traction or regeneration) operating condition and particular location of charged train in the traction net.
Three, the utility model is by contact line electricity segmentation and switching station and use failure criterion between the setting area in the terminal in parallel traction net of double track railway; can be in time, find, distinguish, isolate and dispose various faults exactly; selectivity, quick-action, the sensitivity of relaying protection have been strengthened; guarantee the interval continuation power supply of fault-free, operation simultaneously; reduce the power failure scope to greatest extent; avoid the extension of fault effects, further improve the reliability of traction net power supply.
Three, the utility model can further be used in combination with TD information, strengthens complementarity and the flexibility of traction network operation mode and scheduling controlling.
Four, the relevant apparatus investment is less, and it is convenient to implement, and namely is convenient to ew line and adopts, and also is convenient to old line transformation.
The utility model will be further described below in conjunction with the drawings and specific embodiments.
Description of drawings
Fig. 1 is the interval switching station structural representation of the utility model embodiment;
Fig. 2 is synchronous data sampling and the transmission network schematic diagram of power supply state observing and controlling;
Fig. 3 is terminal traction in parallel each interval of net and switching station schematic diagram.
Embodiment
Fig. 1 illustrates, a kind of embodiment of the present utility model is: shown in two ends, railway interval (about 10km) be 2 adjacent switching stations (KBi) and switching station (KBj), switching station (KBi) comprises circuit breaker (DLi) and current transformer (LHi), voltage transformer (YHi) and measurement and control unit.Current transformer (LHi) cross-over connection of circuit breaker (DLi) and series connection with it is in the electric segmentation of contact line (T) (FDi) two ends, and electric segmentation (FDi) is serially connected in the contact line (T), can make uninterrupted charged the passing through of train; Voltage transformer (YHi) is attempted by on the contact line (T); The measuring junction of the measuring junction of current transformer (LHi), voltage transformer (YHi) all links to each other with measurement and control unit with the control end of circuit breaker (DLi); Measurement and control unit is connected with traction substation or control room with transmission network by synchronous data sampling.
Fig. 2 is depicted as synchronous data sampling and the transmission network schematic diagram of power supply state observing and controlling, can be combined utilization with telecontrol system, is responsible for traction substation or control room and exchanges with the real time information of each switching station (KB).The running status of judging the traction net is gathered, is identified in traction substation or control room synchronously, assign control command, the measurement and control unit of each switching station (KB) is responsible for receiving control command and synchronizing information, gathers and transmit the switching information of electric current, voltage data and circuit breaker.
Illustrating as Fig. 3 is interval and the switching station schematic diagram that draws net terminal in parallel that the two-wire electric railway is extensively adopted.Train is powered around extremely up opposite side contact line (T) by the contact line (T) of its traction substation one side with by descending as the train (L1) on up interval 1 by contact line (T) power supply of its both sides among the figure.
In Fig. 3, the voltage that the voltage transformer (YH) of each switching station (KB) is measured is all in normal range (NR), if the electric current (IT10) of the up feeder line of traction substation (being equivalent to a switching station) is not equal to zero with the difference (suppose that traction substation to section post direction is the electric current positive direction) of the electric current (IT11) of adjacent up switching station (KB11), other in twos the electric current difference of adjacent switching station (KB) all equal zero, judging thus has charged train to move in uplink interval 1, and other intervals all do not have charged train.Simultaneously, if the electric current difference at uplink interval 1 two ends judges then that greater than zero the charged train in this interval is in traction working condition, if the electric current difference less than zero the time, judges that then the charged train in this interval is in regeneration (generating) operating mode.The particular location of charged train can be calculated through trend by the electric current that the voltage and current instrument transformer (LH) that the voltage transformer (YH) of two adjacent switching stations (traction substation and KB11) of synchronous collection is measured is measured and obtain.
In like manner, can judge and have or not charged train, charged train operating mode of living in and charged train position in other intervals of uplink and downlink.
When the voltage of measuring when the voltage transformer (YH) of switching station (KB) is lower than normal value, judge traction net fault; Demarcating the fault trend value of symbol that flows into each interval contact line (T) branch road is 1, and the fault trend value of symbol of outflow is-1, and unloaded trend value of symbol is 0; Calculate each interval contact line (T) branch road fault trend value of symbol and value.
In Fig. 3, equal 1 if the measuring voltage of switching station (KB) voltage transformer is down to below the normal value and the fault trend of 2 interior contact line (T) branch roads is value of symbol between up traction barrier with absolute value value, judge that then it is earth fault that this interval traction net branch trouble trend value of symbol equals an end of 1, a null end is disconnection fault: (1) utilize the trend value of symbol equal the synchronous simultaneously-measured voltage of voltage transformer (YH) summation current transformer (LH) of switching station of an end of 1 and calculation of short-circuit current short-circuit reactance and with the ratio of this interval contact line (T) with the total reactance in rail loop, the length that multiply by interval 2 with this ratio draws the particular location of its ground connection and disconnection fault; (2) with season should two ends, interval switching station (KB11, KB12) the equal separating brake of circuit breaker (DL), other interval normal power supplies that keep.
In Fig. 3, equal 2 if the measuring voltage of each switching station (KB) voltage transformer is down to below the normal value and the fault trend of 2 interior contact line (T) branch roads is value of symbol between up traction barrier with absolute value value, judge that then these contact line branch road two ends, interval are earth fault: the voltage that the voltage transformer (YH) of the switching station (KB) of the end that the short circuit current that (1) is measured according to current transformer (LH) in the switching station at these two ends is bigger is measured and synchronously simultaneously-measured (this is bigger) calculation of short-circuit current short-circuit reactance and with the ratio of this interval contact line (T) with the total reactance in rail loop, the length that multiply by interval 2 with this ratio draws the particular location of its earth fault; (2) with season should the two ends, interval circuit breaker (DL) separating brake together of switching station (KB11, KB12), overlap successful reclosing again, recover normal power supply, reclosing failure, the circuit breaker (DL) that makes these two switching stations (KB11, KB12) is separating brake again, other interval normal power supplies that keep.
In like manner, also can judge the combined failure that takes place in each interval of traction net, location and isolated operation.
Claims (1)
1. the terminal traction net in parallel of double track railway divides section power supply and state measure and control device, and its formation and relation are: the interval with railway is unit, sets up the electric segmentation of contact line (T) (FD) and switching station (KB) at interval boundary; Switching station (KB) comprises circuit breaker (DL) and current transformer (LH), voltage transformer (YH) and measurement and control unit; Current transformer (LH) cross-over connection of circuit breaker (DL) and series connection with it is in the electric segmentation of contact line (T) (FD) two ends, and electric segmentation (FD) is serially connected in the contact line, can make uninterrupted charged the passing through of train; Voltage transformer (YH) is connected in parallel on the contact line (T); The measuring junction of the measuring junction of current transformer (LH), voltage transformer (YH) all links to each other with measurement and control unit with the control end of circuit breaker (DL); Measurement and control unit is connected with traction substation or control room with transmission network by synchronous data sampling.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220633553 CN203039357U (en) | 2012-11-26 | 2012-11-26 | Section power supply and state measurement and control apparatus for parallel traction net at end of double-line railway |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220633553 CN203039357U (en) | 2012-11-26 | 2012-11-26 | Section power supply and state measurement and control apparatus for parallel traction net at end of double-line railway |
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| CN203039357U true CN203039357U (en) | 2013-07-03 |
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| CN 201220633553 Expired - Fee Related CN203039357U (en) | 2012-11-26 | 2012-11-26 | Section power supply and state measurement and control apparatus for parallel traction net at end of double-line railway |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105279342A (en) * | 2015-11-18 | 2016-01-27 | 广州地铁集团有限公司 | Segmenting method for subway contact system lead, system, simulating method and simulating system |
| CN105425113A (en) * | 2015-12-22 | 2016-03-23 | 中国神华能源股份有限公司 | Method and system for fault positioning of contact net |
| CN107433883A (en) * | 2016-05-25 | 2017-12-05 | 四川艾德瑞电气有限公司 | Rail traction supply arm integrated monitoring system |
| JP2017537847A (en) * | 2014-11-07 | 2017-12-21 | 西南交通大学 | Decentralized protection system for section feeding of electric railway traction network |
| CN108808641A (en) * | 2018-08-24 | 2018-11-13 | 成都尚华电气有限公司 | Electric railway AT institute's sectionaliser disconnecting switch measure and control devices and its investigating method |
| CN108790948A (en) * | 2018-08-24 | 2018-11-13 | 成都尚华电气有限公司 | A kind of electric railway AT institutes bypass breaker measure and control device and its investigating method |
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2012
- 2012-11-26 CN CN 201220633553 patent/CN203039357U/en not_active Expired - Fee Related
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2017537847A (en) * | 2014-11-07 | 2017-12-21 | 西南交通大学 | Decentralized protection system for section feeding of electric railway traction network |
| EP3216644A4 (en) * | 2014-11-07 | 2018-07-18 | Southwest Jiaotong University | Distributed protection system for power supply at sections of electrified railway propulsion system |
| AU2015342634B2 (en) * | 2014-11-07 | 2019-11-28 | Qunzhan LI | Distributed protection system for power supply at sections of electrified railway propulsion system |
| CN105279342A (en) * | 2015-11-18 | 2016-01-27 | 广州地铁集团有限公司 | Segmenting method for subway contact system lead, system, simulating method and simulating system |
| CN105279342B (en) * | 2015-11-18 | 2019-01-04 | 广州地铁设计研究院股份有限公司 | The segmentation method and system of subway contact line conducting wire, emulation mode and system |
| CN105425113A (en) * | 2015-12-22 | 2016-03-23 | 中国神华能源股份有限公司 | Method and system for fault positioning of contact net |
| CN105425113B (en) * | 2015-12-22 | 2019-12-03 | 中国神华能源股份有限公司 | Contact network fault positioning method and system |
| CN107433883A (en) * | 2016-05-25 | 2017-12-05 | 四川艾德瑞电气有限公司 | Rail traction supply arm integrated monitoring system |
| CN107433883B (en) * | 2016-05-25 | 2020-04-07 | 四川艾德瑞电气有限公司 | Railway traction power supply arm integrated monitoring system |
| CN108808641A (en) * | 2018-08-24 | 2018-11-13 | 成都尚华电气有限公司 | Electric railway AT institute's sectionaliser disconnecting switch measure and control devices and its investigating method |
| CN108790948A (en) * | 2018-08-24 | 2018-11-13 | 成都尚华电气有限公司 | A kind of electric railway AT institutes bypass breaker measure and control device and its investigating method |
| CN108790948B (en) * | 2018-08-24 | 2023-07-28 | 成都尚华电气有限公司 | Measuring and controlling device and measuring and controlling method for bypass breaker of electrified railway AT |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130703 Termination date: 20151126 |