CN107356839B - High-speed railway traction power supply cross-region fault location method - Google Patents
High-speed railway traction power supply cross-region fault location method Download PDFInfo
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- CN107356839B CN107356839B CN201710446806.7A CN201710446806A CN107356839B CN 107356839 B CN107356839 B CN 107356839B CN 201710446806 A CN201710446806 A CN 201710446806A CN 107356839 B CN107356839 B CN 107356839B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/08—Locating faults in cables, transmission lines, or networks
- G01R31/081—Locating faults in cables, transmission lines, or networks according to type of conductors
- G01R31/085—Locating faults in cables, transmission lines, or networks according to type of conductors in power transmission or distribution lines, e.g. overhead
Abstract
The invention discloses a cross-zone fault distance measurement method for traction power supply of a high-speed railway, which comprises the steps that when a traction power supply mode is switched from a normal power supply mode to a cross-zone power supply mode, a cross-zone isolating switch located in a zone of a current power supply arm is changed from a switch-off position to a switch-on position, a cross-zone power supply alarm sent by the zone is sent to a dispatching end, and after the cross-zone power supply alarm is confirmed, the dispatching end remotely controls the cross-zone soft pressing plates of distance measurement devices located in a traction substation, an AT substation and the zone and reads cross-zone power supply operation parameters. The invention can remotely and automatically switch the distance measuring device to the cross-region running state, reduces the manpower, material resources and time required by the cross-region setting of the distance measuring device, has applicability to various cross-region power supply conditions, and greatly improves the reliability of traction power supply.
Description
Technical Field
The invention relates to a high-speed railway traction power supply cross-region fault location method, and belongs to the field of high-speed railway traction power supply.
Background
With busy high-speed railway lines and continuous increase of the traffic flow density of a trunk line, the requirements of traction power transformation on reliability are increasingly improved. In order to ensure uninterrupted power supply of railways, the power substation often adopts an abnormal mode to supply power, namely, power supply in a cross-area mode. The cross-area power supply obtains better feedback in practical application, which not only can ensure that the existing equipment is overhauled in time, but also can ensure that the high-speed railway line supplies power uninterruptedly. The influence on the high-speed railway due to equipment failure or line reconstruction can be greatly reduced through the over-zone power supply.
However, at present, fault location during high-speed railway power supply is still a technical difficulty. Wherein a large amount of manpower and material resources are needed for switching the operation modes of the fault distance measuring device of the whole power supply arm. And the normal operation mode of the distance measuring device needs to be manually set again after the over-area power supply is finished, so that great inconvenience is brought to the operation and maintenance of the high-speed railway.
Disclosure of Invention
In order to solve the technical problem, the invention provides a high-speed railway traction power supply cross-region fault distance measuring method.
In order to achieve the purpose, the invention adopts the technical scheme that:
a high-speed railway traction power supply cross-region fault location method comprises the steps that distance location devices of a traction substation, an AT station and a subarea station are communicated and interconnected, and data are uploaded to a scheduling end;
when the traction power supply mode is switched from the normal power supply mode to the cross-zone power supply mode, the cross-zone isolating switch located in the subarea of the current power supply arm is changed from the opening position to the closing position, the cross-zone power supply alarm sent by the subarea is sent to the dispatching end, and after the cross-zone power supply alarm is confirmed, the dispatching end puts in a cross-zone soft pressing plate of the distance measuring device remotely located in the traction substation, the AT and the subarea and reads cross-zone power supply operation parameters.
The high-speed railway distance measurement parameters on one power supply arm comprise a plurality of groups of parameters, each group of parameters comprises normal power supply operation parameters and cross-area power supply operation parameters, when the traction power supply mode is the normal power supply mode, the distance measurement device reads the normal power supply operation parameters, and when the traction power supply mode is the cross-area power supply mode, the distance measurement device reads the cross-area power supply operation parameters.
The normal power supply operation parameters comprise normal power supply communication parameters, normal power supply protection fixed values and normal power supply distance measurement parameters; the handoff operation parameters include a handoff communication parameter, a handoff protection value, and a handoff ranging parameter.
The normal power supply communication parameters comprise a local side IP address, an opposite side IP address, a local side plant station number and an opposite side plant station number; the handover power communication parameters include a handover home side IP address, a handover opposite side IP address, a handover home side station number, and a handover opposite side station number.
The process of reading parameters by the distance measuring device is as follows: the distance measuring device automatically reads corresponding communication parameters, protection setting values and distance measuring parameters according to the switching of the soft pressure plate at the cross area and automatically restarts the device, and the communication parameters, the protection setting values and the distance measuring parameters are written into a specific storage area in the restarting process.
When the traction power supply mode is switched from the cross-area power supply mode to the normal power supply mode, the cross-area isolating switch located in the subarea of the current power supply arm is changed from a switch-on position to a switch-off position, a normal power supply alarm sent by the subarea is sent to the dispatching end, and after the normal power supply alarm is confirmed, the dispatching end withdraws the cross-area soft pressing plate of the distance measuring device remotely located in the traction substation, the AT and the subarea and reads normal power supply operation parameters.
The invention achieves the following beneficial effects: the invention can remotely and automatically switch the distance measuring device to the cross-region running state, reduces the manpower, material resources and time required by the cross-region setting of the distance measuring device, has applicability to various cross-region power supply conditions, and greatly improves the reliability of traction power supply.
Drawings
FIG. 1 is a flow chart of the present invention;
FIG. 2 is a schematic diagram of a network topology of the present invention;
fig. 3 is a schematic diagram of a handoff network;
fig. 4 is a diagram of a special large-area network.
Detailed Description
The invention is further described below with reference to the accompanying drawings. The following examples are only for illustrating the technical solutions of the present invention more clearly, and the protection scope of the present invention is not limited thereby.
As shown in fig. 1, a method for ranging a high-speed railway traction power supply handover fault specifically includes the following steps:
1) as shown in fig. 2, the distance measuring devices of the traction substation, the AT station and the subarea station are communicatively interconnected through ethernet or E1, and all upload data to the dispatching end.
2) When the traction power supply mode is switched from the normal power supply mode to the cross-zone power supply mode, the cross-zone isolating switch in the subarea of the current power supply arm is changed from the opening position to the closing position, the cross-zone power supply alarm sent by the subarea is sent to the dispatching end, and after the cross-zone power supply alarm is confirmed (generally manually confirmed), the dispatching end puts in a cross-zone soft pressing plate of a distance measuring device remotely located in a traction substation, an AT substation and the subarea substation, and reads the cross-zone power supply operation parameters.
On the contrary, when the traction power supply mode is switched from the cross-area power supply mode to the normal power supply mode, the cross-area isolating switch in the subarea station of the current power supply arm is changed from the switch-on position to the switch-off position, the normal power supply alarm sent by the subarea station is sent to the dispatching end, and after the normal power supply alarm is confirmed, the dispatching end withdraws the cross-area soft pressing plate of the distance measuring device remotely controlled to be located in the traction substation, the AT station and the subarea station, and reads the normal power supply operation parameters.
The high-speed railway distance measurement parameters on one power supply arm comprise a plurality of groups of parameters, at most 15 groups of parameters exist, each group of parameters comprises normal power supply operation parameters and cross-area power supply operation parameters, when the traction power supply mode is the normal power supply mode, the distance measurement device reads the normal power supply operation parameters, and when the traction power supply mode is the cross-area power supply mode, the distance measurement device reads the cross-area power supply operation parameters. As shown in table one, the normal power supply operation parameters include a normal power supply communication parameter, a normal power supply protection fixed value and a normal power supply ranging parameter; the handoff operation parameters include a handoff communication parameter, a handoff protection value, and a handoff ranging parameter. As shown in table two, the normal power supply communication parameters include the local side IP address, the opposite side IP address, the local side plant number and the opposite side plant number; the handover power communication parameters include a handover home side IP address, a handover opposite side IP address, a handover home side station number, and a handover opposite side station number.
Watch-parameter table
Watch communication parameter table
The process of reading parameters by the distance measuring device is as follows: the distance measuring device automatically reads corresponding communication parameters, protection setting values and distance measuring parameters according to the switching of the soft pressure plate at the cross area and automatically restarts the device, and the communication parameters, the protection setting values and the distance measuring parameters are written into a specific storage area in the restarting process.
As shown in fig. 3, in the normal power supplying state, the power supplying arm a formed by the towing station A, AT a and the partition, and the power supplying arm B formed by the towing station B, AT B and the partition. AT this time, the distance measuring devices located in the towing station A, AT a and the district stations are all interconnected through the ethernet or the E1 channel, wherein the distance measuring devices of the towing station A, AT a, the district stations, the towing station B and the AT station B communicate with the opposite side IP address according to the local side station number, the opposite side station number and the local side IP address in the normal power supply communication parameters, and the distance measuring devices use the normal power supply protection fixed value and the normal power supply distance measuring parameters.
When the cross-area power supply mode is adopted, the traction station A, the partition station and the AT station B form a power supply arm. And at the moment, the subarea can judge whether the subarea is in the power supply state or not through the position of the internal subarea isolating switch, if the conditions are met, the dispatching terminal automatically remotely controls the switching of the subarea ranging soft pressing plate, the traction station A, AT B and the ranging device in the subarea are automatically restarted, and in the restarting process, the ranging device reads the subarea station at the local side, the number of the subarea station at the opposite side, the IP address at the local side and the IP address at the opposite side in the power supply communication parameters, and reads the power supply protection constant value and the power supply ranging parameters. After the automatic restart, the towing post A, AT B and the zoning post form a handoff arm, and the communication status between the towing post A, AT B and the ranging device of the zoning post is maintained.
If a special large handoff condition is encountered, as shown in fig. 4, in the normal operation condition, the power supply arm a is composed of the traction station A, AT a and the partition station 1; the traction station B, AT B and the partition station 1 form a power supply arm B; the traction station B, AT C and the partition 2 form a power supply arm C. In the handoff state, the traction station A, AT C and the partition station 1 constitute a handoff arm. The high-speed railway traction power supply cross-region fault ranging technology is still suitable for the cross-region condition.
The method can remotely and automatically switch the distance measuring device to the cross-region running state, reduces the manpower, material resources and time required by the cross-region setting of the distance measuring device, has applicability to various cross-region power supply conditions, and greatly improves the reliability of traction power supply.
The above description is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, several modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations should also be regarded as the protection scope of the present invention.
Claims (5)
1. A high-speed railway traction power supply cross-region fault location method is characterized by comprising the following steps: the distance measuring devices of the traction substation, the AT station and the subarea station are communicated and interconnected, and all transmit data to the dispatching end;
when the traction power supply mode is switched from the normal power supply mode to the cross-zone power supply mode, a cross-zone isolating switch located in a zone of a current power supply arm is changed from a switch-off position to a switch-on position, a cross-zone power supply alarm sent by the zone is sent to a dispatching end, and after the cross-zone power supply alarm is confirmed, the dispatching end puts in a cross-zone soft pressing plate of a distance measuring device remotely located in a traction substation, an AT station and the zone and reads cross-zone power supply operation parameters;
when the traction power supply mode is switched from the cross-area power supply mode to the normal power supply mode, the cross-area isolating switch located in the subarea of the current power supply arm is changed from a switch-on position to a switch-off position, a normal power supply alarm sent by the subarea is sent to the dispatching end, and after the normal power supply alarm is confirmed, the dispatching end withdraws the cross-area soft pressing plate of the distance measuring device remotely located in the traction substation, the AT and the subarea and reads normal power supply operation parameters.
2. The high-speed railway traction power supply cross-region fault location method according to claim 1, characterized in that: the high-speed railway distance measurement parameters on one power supply arm comprise a plurality of groups of parameters, each group of parameters comprises normal power supply operation parameters and cross-area power supply operation parameters, when the traction power supply mode is the normal power supply mode, the distance measurement device reads the normal power supply operation parameters, and when the traction power supply mode is the cross-area power supply mode, the distance measurement device reads the cross-area power supply operation parameters.
3. The high-speed railway traction power supply cross-region fault location method according to claim 2, characterized in that: the normal power supply operation parameters comprise normal power supply communication parameters, normal power supply protection fixed values and normal power supply distance measurement parameters; the handoff operation parameters include a handoff communication parameter, a handoff protection value, and a handoff ranging parameter.
4. The high-speed railway traction power supply cross-region fault location method according to claim 3, characterized in that: the normal power supply communication parameters comprise a local side IP address, an opposite side IP address, a local side plant station number and an opposite side plant station number; the handover power communication parameters include a handover home side IP address, a handover opposite side IP address, a handover home side station number, and a handover opposite side station number.
5. The high-speed railway traction power supply cross-region fault location method according to claim 3, characterized in that: the process of reading parameters by the distance measuring device is as follows: the distance measuring device automatically reads corresponding communication parameters, protection setting values and distance measuring parameters according to the switching of the soft pressure plate at the cross area and automatically restarts the device, and the communication parameters, the protection setting values and the distance measuring parameters are written into a specific storage area in the restarting process.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107871170A (en) * | 2017-11-29 | 2018-04-03 | 中国铁路总公司 | Electric railway intelligence tractive power supply system architecture technology |
| CN109782295A (en) * | 2019-01-25 | 2019-05-21 | 国网安徽省电力有限公司六安供电公司 | Substation's hard pressing plate state-detection capacity checking device |
| CN110086245A (en) * | 2019-04-19 | 2019-08-02 | 国电南瑞科技股份有限公司 | Adaptive region power supply self-healing system and self-healing method under a kind of over-zone feeding mode |
| CN110244182B (en) * | 2019-06-28 | 2021-05-18 | 国电南瑞南京控制系统有限公司 | Fault positioning method and system suitable for electrified railway multi-branch line |
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| KR20060132420A (en) * | 2005-06-18 | 2006-12-21 | 한국철도기술연구원 | Ground fault protective relaying scheme using distance relay in traction power supply system |
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