CN101951021B - Railway power line fault automatic isolation system and method - Google Patents
Railway power line fault automatic isolation system and method Download PDFInfo
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- CN101951021B CN101951021B CN 201010230092 CN201010230092A CN101951021B CN 101951021 B CN101951021 B CN 101951021B CN 201010230092 CN201010230092 CN 201010230092 CN 201010230092 A CN201010230092 A CN 201010230092A CN 101951021 B CN101951021 B CN 101951021B
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Abstract
The invention provides railway power line fault automatic isolation system and method. The system comprises substation control layer equipment, a plurality of line interval layer equipments arranged along a power line and a plurality of normally-closed switches arranged on the power line corresponding to the plurality of line interval layer equipments one to one, wherein the plurality of line interval layer equipments divide the power line into a plurality of sections; the substation control layer equipment is used for obtaining information relative to a fault position and transferring isolation indication signals to the line interval layer equipment at the endpoint of a section containing the fault position according to the information of the fault position; the line interval layer equipments are used for receiving the isolation indication signals from the substation control layer equipment and responding the received isolation indication signals to control the switches corresponding to the line interval layer equipments to open. The railway power line fault automatic isolation system and method have the advantages of automatically and rapidly isolating the fault section, saving the manpower and material resources and being beneficial to rapidly recovering the power.
Description
Technical field
The application relates to the railway power system, relates in particular to a kind of railway power line fault automatic isolation system and method.
Background technology
Along with the develop rapidly of power technology, the various aspects such as industry, agricultural, communications and transportation all be unable to do without electricity, so the normal operation of power circuit is extremely important for the mankind's normal productive life.Along with the continuous lifting of transport capacity of heavy duty, high vehicle density railway, to railway electric power supply line (such as the 10kV railway electric power supply line) power supply reliability of powering for its train signal, have higher requirement.
At present, when railway electric power supply line breaks down, usually need the attendant in person to on-the-spot the section that breaks down to be isolated, be beneficial in time restoring electricity of other non-fault sections.Yet, the common distribution of power circuit is wider, especially railway electric power supply line, not only mountain area or ungetable place are grown but also generally be positioned to circuit, when breaking down, the attendant is difficult to the very first time and is on the scene, and this is unfavorable in time restoring electricity of power circuit so that required time of fault section isolation is longer; And fault usually occurs in the situation of bad weather, relies on particularly difficulty of isolation that line attendant carries out fault section to on-the-spot drawing switch this moment, and has the hidden danger on the safety, is difficult to adapt to the requirement of modern railways transportation.
Summary of the invention
The present invention is directed to the problems referred to above, proposed a kind of railway power line fault automatic isolation system and method, can realize the automatism isolation of fault section, reduced the required time of Fault Isolation, improved safety in operation, and saved human and material resources.
The invention provides a kind of railway power line fault automatic isolation system, this system comprise station level equipment, with this station level devices communicating and along a plurality of line segregation layer equipment of the power circuit setting between the distribution substation and with these a plurality of line segregation layer equipment corresponding a plurality of normally closed switchs that are arranged on the power circuit one by one, described a plurality of line segregation layer equipment is divided into a plurality of sections with described power circuit, and each the line segregation layer equipment switch corresponding with it in described a plurality of line segregation layer equipment is coupled;
Described station level equipment is used for obtaining the information about abort situation, and isolates index signal according to this information about abort situation to the line segregation layer equipment transmission at the end points place that is arranged on a section that comprises described abort situation; And
Described line segregation layer equipment is used for receiving described isolation index signal from station level equipment, and controls switch disconnection corresponding to this line segregation layer equipment in response to receiving this isolation index signal.
The present invention also provides a kind of railway power line fault automatism isolation method for railway power line fault automatic isolation system, wherein this feeder line fault automatic isolation system comprises station level equipment, with this station level devices communicating and along a plurality of line segregation layer equipment of the power circuit setting between the distribution substation and with these a plurality of line segregation layer equipment corresponding a plurality of normally closed switchs that are arranged on the power circuit one by one, described a plurality of line segregation layer equipment is divided into a plurality of sections with described power circuit, and each the line segregation layer equipment switch corresponding with it in described a plurality of line segregation layer equipment is coupled; Described method comprises:
Obtain information about abort situation by described station level equipment, and transmit isolation index signal about information of abort situation to the line segregation layer equipment at the end points place that is arranged on a section that comprises described abort situation according to this;
Receive described isolation index signal by described line segregation layer equipment from station level equipment, and control switch disconnection corresponding to this line segregation layer equipment in response to receiving this isolation index signal.
Feeder line fault automatic isolation system provided by the invention and method, because this system comprises station level equipment, with this station level devices communicating and along a plurality of line segregation layer equipment of the power circuit setting between the distribution substation and with these a plurality of line segregation layer equipment corresponding a plurality of normally closed switchs that are arranged on the power circuit one by one, station level equipment can be assigned the isolation index signal to the line segregation layer equipment in the fault section, and the switch of being controlled on the corresponding power circuit by bay device disconnects, realize the automatism isolation of fault section, and no longer need the attendant to arrive field operation, improved operational security, saved manpower, material resources, and reduced the required time of fault section isolation, provide possibility for realizing fast recovery of power supply.
Description of drawings
Fig. 1 shows is schematic diagram according to railway power line fault automatic isolation system of the present invention;
Fig. 2 shows is signal flow diagram according to railway power line fault automatic isolation system of the present invention and method;
What Fig. 3 showed is according to the railway power line fault automatic isolation system of preferred implementation provided by the invention and the signal flow diagram of method;
Fig. 4 shows is station level equipment in the railway power line fault automatic isolation system provided by the invention schematic diagram when adopting 3G to communicate by letter with bay device.
Embodiment
Such as Fig. 1 and shown in Figure 2, the invention provides a kind of railway power line fault automatic isolation system and be used for the railway electric power supply line automatism isolation method of this railway power line fault automatic isolation system, described railway power line fault automatic isolation system comprises station level equipment, with this station level devices communicating and along a plurality of line segregation layer equipment of the power circuit setting between the distribution substation and with these a plurality of line segregation layer equipment corresponding a plurality of normally closed switchs that are arranged on the power circuit one by one, described a plurality of line segregation layer equipment is divided into a plurality of sections with described power circuit, and each the line segregation layer equipment switch corresponding with it in described a plurality of line segregation layer equipment is coupled; Described station level equipment is used for obtaining the information about abort situation, and isolates index signal according to this information about abort situation to the line segregation layer equipment transmission at the end points place that is arranged on a section that comprises described abort situation; And described line segregation layer equipment is used for receiving described isolation index signal from station level equipment, and controls switch disconnection corresponding to this line segregation layer equipment in response to receiving this isolation index signal.
Preferably, described line segregation layer equipment sends the isolation settling signal for after its corresponding switch of control disconnects to described station level equipment, so that whether station level device learns fault section successfully isolates.
Preferably, at the distribution at the power circuit two ends distribution substation's bay device that also is provided with of living in, described station level equipment is used in response to receiving this isolation settling signal, transmit the combined floodgate index signal to described distribution substation bay device, described distribution substation bay device is used for receiving described combined floodgate index signal from described station level equipment, and controls the residing circuit breaker of this distribution in response to receiving this combined floodgate index signal and become co-bit.Like this, after successful isolated fault section, carry out aforesaid operations, can realize the power supply of the automatically fast non-fault section of quick-recovery, reduced the required time that restores electricity, and saved human and material resources.
Railway power line fault automatic isolation system according to one embodiment of the present invention has been shown among Fig. 1.A supply arm that forms between two distribution substations in Fig. 1 (main distribution shown in Fig. 1 and standby distribution substation).Usually 40km～60km can arrange a distribution substation on railway electric power supply line, the electric power incoming line of distribution substation is taken from the local electricity system, the outlet of two adjacent distribution substations consists of a supply arm, on whole railway electric power supply line, can be divided into a plurality of supply arms like this, two adjacent distribution substations are each other active and standby confessions, preferably, distribution substation's bay device can be set in that distribution is of living in.Described line segregation layer equipment can be with any spacing along the power circuit setting, preferably, every 5km～7km a line segregation layer equipment is set, certainly, if condition does not allow, conditions permit large the and line segregation layer equipment of negligible amounts of spacing distance can be set, if can also arrange the less and more line segregation layer equipment of spacing distance.Distance between the adjacent lines bay device can equate, also can be unequal.Although example has demonstrated 4 equally distributed line segregation layer equipment among Fig. 1, and do not mean that the present invention has any restriction to the distance between the line segregation layer equipment and quantity.As shown in Figure 1, be provided with and a plurality of line segregation layer equipment a plurality of normally closed switchs one to one the control that these normally closed switchs can hard to bear line segregation layer equipment at power circuit.
Described station level device learns can be by receiving the mode of outside input about the mode of the information of abort situation, also or other modes realize.Information about abort situation can be the fault dot information, also can be the fault zone field.Described station level equipment can comprise central processing unit and wireless transmitter, this central processing unit is used for according to about the information output of the abort situation isolation index signal for the line segregation layer equipment at the end points place of a section that comprises described abort situation, and should isolate index signal and send to corresponding line segregation layer equipment by wireless transmitter.Central processing unit can adopt such as any software and hardware structures of above-mentioned functions of can realizing such as Industrial Control Computers realizes that the present invention is not restricted this.
Described line segregation layer equipment can comprise wireless transmitter and processing unit, wireless transmitter in this line segregation layer equipment receives the isolation index signal from station level equipment, and should isolate index signal and send to processing unit, described processing unit outputs a control signal to corresponding switch according to this isolation index signal and disconnects to control this switch.Described distribution substation bay device can comprise wireless transmitter and processing unit, wireless transmitter in this distribution substation's bay device receives the combined floodgate index signal from station level equipment, and should the combined floodgate index signal send to the processing unit in this distribution substation's bay device, described processing unit outputs a control signal to circuit breaker in the distribution substation according to this combined floodgate index signal, becomes co-bit with the control circuit breaker.Processing unit in the line segregation layer equipment and the processing unit in distribution substation's bay device can adopt any software and hardware structure of above-mentioned functions of can realizing to realize.
Described switch can be the various controlled switchs that are fit to be installed in the break-make that can control power circuit on the power circuit of any type, such as electric-controlled switch, magnetic switch etc.Preferably, described switch is vacuum circuit-breaker, vacuum circuit-breaker have volume little, lightweight, be applicable to the advantage such as frequent operation, in power distribution network, use comparatively universal.Described switch can be electrically connected or magnetic coupling mutually with described bay device.
Can carry out radio communication between described each line segregation layer equipment and distribution substation's bay device and the station level equipment, the communication protocol that both signal posts adopt can be any communication protocol such as GSM.Preferably, adopt the 3G agreement to communicate between bay device and the station level equipment, as shown in Figure 4, has a upper 3G communication module in the station level equipment, all have a next 3G communication module in each bay device, upper 3G communication module can communicate with a plurality of the next 3G communication modules, and this just forms the networking mode of 1+N, the corresponding mutual unduplicated access point (APN) of each bay device, and each bay device adopts fixedly IP of APN private network.When power circuit needs to increase line segregation layer equipment, only itself and station level equipment are communicated and get final product.Feeder line fault automatic isolation system provided by the invention is easy to access new bay device, is convenient to very much dilatation.
In the actual power line road, may have a plurality of supply arms, when using feeder line fault automatic isolation system provided by the invention, can on each supply arm, respectively use cover feeder line fault automatic isolation system provided by the invention, certainly, for saving equipment investment and making things convenient for gathering of information, can share a station level equipment by a plurality of supply arms, and all along power circuit bay device is set as mentioned above on each supply arm, bay device on each supply arm is as a logical block, and each logical block is carried out the isolation of fault section independently at station level equipment.
A preferred embodiment of the invention, power circuit automatic isolation system provided by the invention can be by the functions of obtaining of self automatically finishing about the information of abort situation, and do not need to obtain from the outside fault section information.As shown in Figure 3, in this preferred implementation, described station level equipment obtains the information about abort situation in the following manner: described bay device gathers the power circuit characteristic signals of the position at its place, and when the power circuit characteristic signals abnormal that collects, be sent to described station level equipment after will this power circuit characteristic signals adding failure identification; And described distribution substation bay device also is used for gathering main distribution institute and the standby residing circuit-breaker status signal of distribution, and this circuit-breaker status signal is sent to described station level equipment; Described station level device responds is in the power circuit characteristic signals that receives with failure identification, and judges according to the main distribution institute that receives and the standby residing circuit-breaker status signal of distribution whether described power circuit permanent fault occurs; And described station level equipment is after judging described power circuit generation permanent fault, take the power supply direction as benchmark, relatively be sent to successively the power circuit characteristic signals of this station level equipment by adjacent two bay devices, if there is from the different situation of the power circuit characteristic signals of adjacent two bay devices, judge that then permanent fault occurs in the position between these adjacent two bay devices.Described power circuit characteristic signals is at least one in voltage signal and the current signal.
Wherein, during one in satisfying following condition, described station level equipment is judged described power circuit generation permanent fault:
A) received circuit-breaker status signal designation main distribution institute circuit breaker by co-bit to minute position again to co-bit again to a minute position, and be in minute for the distribution substation circuit breaker always; Perhaps
B) received circuit-breaker status signal designation main distribution institute circuit breaker by co-bit to a minute position, and standby distribution substation circuit breaker by minute position to co-bit again to dividing.
Preferably, described distribution substation bay device also is used for gathering main distribution institute and the standby residing relaying protection actuating signal of distribution, and this relaying protection actuating signal is sent to station level equipment; And described station level equipment is when judging whether described power circuit permanent fault occurs; except according to the main distribution institute that receives and the standby residing circuit-breaker status signal of distribution, also judge in conjunction with the main distribution institute and the standby residing relaying protection actuating signal of distribution that receive.Like this because on the basis of circuit-breaker status variable signal as the foundation of judging permanent fault; introduced the relaying protection actuating signal as another compound foundation of judging permanent fault; reduce the risk of system's judgement permanent fault, improved reliability, the accuracy of system.
Wherein, during one in satisfying following condition, described station level equipment is judged described power circuit generation permanent fault:
A) received circuit-breaker status signal designation main distribution institute circuit breaker by co-bit to minute position again to co-bit again to a minute position, and be in minute for the distribution substation circuit breaker, and the relaying protection actuating signal indicating relay protective device that receives has moved always; Perhaps
B) received circuit-breaker status signal designation main distribution institute circuit breaker by co-bit to a minute position, and standby distribution substation circuit breaker by minute position to co-bit again to dividing, and the relaying protection actuating signal indicating relay protective device that receives moves.
Below with reference to the accompanying drawings technical scheme of the present invention is described in detail; it will be appreciated that; accompanying drawing of the present invention and the above-mentioned corresponding description that accompanying drawing is done should not regarded limiting the scope of the invention as, and have provided a kind of execution mode or the preferred implementation of technical solution of the present invention.For example, although provide a kind of specifically about self automatic acquisition mode of the information of abort situation in the preferred implementation of the present invention, but and be not intended to and show that feeder line fault automatic isolation system of the present invention and method only can adopt above-mentioned specific automatic fault section partition method when the information that realizes obtaining about abort situation, also and do not mean that feeder line fault automatic isolation system of the present invention and method must comprise the obtain manner of above-mentioned specific abort situation information.The modification, replacement, change and the equivalent form of value that it will be appreciated by persons skilled in the art that multiple special characteristic to foregoing description all fall into protection scope of the present invention.
Railway electric power supply line automatic isolation system provided by the invention and method when power circuit breaks down, can realize automatic, fast isolation to fault section, have saved manpower and materials, have improved processing safety, are convenient to the fast recovery of power supply of power circuit.Preferred implementation of the present invention can also realize automatic analysis and the judgement of fault section, and need not to obtain from the outside fault section information, realize on this basis the automatism isolation to fault section, reduced the needed time of fault section automatism isolation, can guarantee the track section fast recovery of power supply that do not break down to be conducive to guarantee the normal operation of power circuit.
Claims (6)
1. railway power line fault automatic isolation system, this system comprise station level equipment, with this station level devices communicating and along a plurality of line segregation layer equipment of the power circuit setting between the distribution substation and with these a plurality of line segregation layer equipment corresponding a plurality of normally closed switchs that are arranged on the power circuit one by one, described a plurality of line segregation layer equipment is divided into a plurality of sections with described power circuit, and each the line segregation layer equipment switch corresponding with it in described a plurality of line segregation layer equipment is coupled;
Described station level equipment is used for obtaining the information about abort situation, and isolates index signal according to this information about abort situation to the line segregation layer equipment transmission at the end points place that is arranged on a section that comprises described abort situation;
Described line segregation layer equipment is used for receiving described isolation index signal from station level equipment, and control switch corresponding to this line segregation layer equipment disconnects in response to receiving this isolation index signal, described line segregation layer equipment is used for sending the isolation settling signal to described station level equipment after its corresponding switch of control disconnects; And
At the distribution at the power circuit two ends distribution substation's bay device that also is provided with of living in, described station level equipment is used in response to receiving this isolation settling signal, transmit the combined floodgate index signal to described distribution substation bay device, described distribution substation bay device is used for receiving described combined floodgate index signal from described station level equipment, and controls the residing circuit breaker of this distribution in response to receiving this combined floodgate index signal and become co-bit;
Wherein, described station level equipment obtains the information about abort situation in the following manner:
Described bay device gathers the power circuit characteristic signals of the position at its place, and when the power circuit characteristic signals abnormal that collects, is sent to described station level equipment after will this power circuit characteristic signals adding failure identification; And described distribution substation bay device also is used for gathering main distribution institute and the standby residing circuit-breaker status signal of distribution, and this circuit-breaker status signal is sent to described station level equipment;
Described station level device responds is in the power circuit characteristic signals that receives with failure identification, and judges according to the main distribution institute that receives and the standby residing circuit-breaker status signal of distribution whether described power circuit permanent fault occurs;
Described station level equipment is after judging described power circuit generation permanent fault, take the power supply direction as benchmark, relatively be sent to successively the power circuit characteristic signals of this station level equipment by adjacent two bay devices, if there is from the different situation of the power circuit characteristic signals of adjacent two bay devices, judge that then permanent fault occurs in the position between these adjacent two bay devices; Wherein said power circuit characteristic signals is at least one in voltage signal and the current signal; And
Described distribution substation bay device also is used for gathering main distribution institute and the standby residing relaying protection actuating signal of distribution, and this relaying protection actuating signal is sent to station level equipment; And described station level equipment is when judging whether described power circuit permanent fault occurs, except according to the main distribution institute that receives and the standby residing circuit-breaker status signal of distribution, also judge in conjunction with the main distribution institute and the standby residing relaying protection actuating signal of distribution that receive;
Wherein, during one in satisfying following condition, described station level equipment is judged described power circuit generation permanent fault:
A) received circuit-breaker status signal designation main distribution institute circuit breaker by co-bit to minute position again to co-bit again to a minute position, and be in minute for the distribution substation circuit breaker, and the relaying protection actuating signal indicating relay protective device that receives has moved always; Perhaps
B) received circuit-breaker status signal designation main distribution institute circuit breaker by co-bit to a minute position, and standby distribution substation circuit breaker by minute position to co-bit again to dividing, and the relaying protection actuating signal indicating relay protective device that receives moves.
2. railway power line fault automatic isolation system according to claim 1, wherein said switch is electric-controlled switch or magnetic switch.
3. railway power line fault automatic isolation system according to claim 1 wherein carries out radio communication between station level equipment and each bay device.
4. railway power line fault automatic isolation system according to claim 3 wherein carries out radio communication by the 3G agreement between station level equipment and line segregation layer equipment and the distribution substation's bay device.
5. railway power line fault automatic isolation system according to claim 1, wherein the distance between the adjacent lines bay device is 5km～7km.
6. railway power line fault automatism isolation method that is used for railway power line fault automatic isolation system, wherein this feeder line fault automatic isolation system comprises station level equipment, with this station level devices communicating and along a plurality of line segregation layer equipment of the power circuit setting between the distribution substation and with these a plurality of line segregation layer equipment corresponding a plurality of normally closed switchs that are arranged on the power circuit one by one, described a plurality of line segregation layer equipment is divided into a plurality of sections with described power circuit, the switch of the corresponding setting with it of each line segregation layer equipment is connected, and each the line segregation layer equipment switch corresponding with it in described a plurality of line segregation layer equipment is coupled; Described method comprises:
Obtain information about abort situation by described station level equipment, and transmit isolation index signal about information of abort situation to the line segregation layer equipment at the end points place that is arranged on a section that comprises described abort situation according to this;
Receive described isolation index signal by described line segregation layer equipment from station level equipment, and control switch corresponding to this line segregation layer equipment disconnects in response to receiving this isolation index signal, after described line segregation layer equipment is controlled its corresponding switch disconnection, send the isolation settling signal to described station level equipment; And
At the distribution of the power circuit both sides distribution substation's bay device that also is provided with of living in, described station level equipment receives after the isolation settling signal, transmit the combined floodgate index signal to described distribution substation bay device, described distribution substation bay device is used for controlling the residing circuit breaker of this distribution and becoming co-bit after receiving the combined floodgate index signal;
Wherein, described station level equipment obtains the information about abort situation in the following manner:
Described bay device gathers the power circuit characteristic signals of the position at its place, and when the power circuit characteristic signals abnormal that collects, is sent to described station level equipment after will this power circuit characteristic signals adding failure identification; And described distribution substation bay device also is used for gathering main distribution institute and the standby residing circuit-breaker status signal of distribution, and this circuit-breaker status signal is sent to described station level equipment;
Described station level device responds is in the power circuit characteristic signals that receives with failure identification, and judges according to the main distribution institute that receives and the standby residing circuit-breaker status signal of distribution whether described power circuit permanent fault occurs;
Described station level equipment is after judging described power circuit generation permanent fault, take the power supply direction as benchmark, relatively be sent to successively the power circuit characteristic signals of this station level equipment by adjacent two bay devices, if there is from the different situation of the power circuit characteristic signals of adjacent two bay devices, judge that then permanent fault occurs in the position between these adjacent two bay devices; Wherein said power circuit characteristic signals is at least one in voltage signal and the current signal; And
Described distribution substation bay device also is used for gathering main distribution institute and the standby residing relaying protection actuating signal of distribution, and this relaying protection actuating signal is sent to station level equipment; And described station level equipment is when judging whether described power circuit permanent fault occurs, except according to the main distribution institute that receives and the standby residing circuit-breaker status signal of distribution, also judge in conjunction with the main distribution institute and the standby residing relaying protection actuating signal of distribution that receive;
Wherein, during one in satisfying following condition, described station level equipment is judged described power circuit generation permanent fault:
A) received circuit-breaker status signal designation main distribution institute circuit breaker by co-bit to minute position again to co-bit again to a minute position, and be in minute for the distribution substation circuit breaker, and the relaying protection actuating signal indicating relay protective device that receives has moved always; Perhaps
B) received circuit-breaker status signal designation main distribution institute circuit breaker by co-bit to a minute position, and standby distribution substation circuit breaker by minute position to co-bit again to dividing, and the relaying protection actuating signal indicating relay protective device that receives moves.
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| CN 201010230092 CN101951021B (en) | 2010-07-13 | 2010-07-13 | Railway power line fault automatic isolation system and method |
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| CN 201010230092 CN101951021B (en) | 2010-07-13 | 2010-07-13 | Railway power line fault automatic isolation system and method |
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| CN101951021B true CN101951021B (en) | 2013-01-16 |
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| CN108802572B (en) * | 2018-06-28 | 2020-07-03 | 长沙学院 | Distribution lines fault diagnosis device |
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| CN101013149A (en) * | 2005-10-21 | 2007-08-08 | 明知大学校产学协力团 | Method and apparatus for detecting a fault section in ungrounded distribution power systems |
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| CN1664598A (en) * | 2005-03-29 | 2005-09-07 | 万忠泽 | Method for automatically orientating line fault of electrical power system by using time mark grouping |
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