CN220973977U - Ground electrified automatic passing neutral section device - Google Patents
Ground electrified automatic passing neutral section device Download PDFInfo
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- CN220973977U CN220973977U CN202322466630.5U CN202322466630U CN220973977U CN 220973977 U CN220973977 U CN 220973977U CN 202322466630 U CN202322466630 U CN 202322466630U CN 220973977 U CN220973977 U CN 220973977U
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- 230000007935 neutral effect Effects 0.000 title claims description 34
- 239000003990 capacitor Substances 0.000 claims abstract description 23
- 238000001514 detection method Methods 0.000 claims description 66
- 238000002955 isolation Methods 0.000 claims description 7
- 230000003137 locomotive effect Effects 0.000 abstract description 38
- 238000005191 phase separation Methods 0.000 abstract description 19
- 230000001052 transient effect Effects 0.000 abstract description 6
- 230000005611 electricity Effects 0.000 description 11
- 238000000034 method Methods 0.000 description 9
- 238000012423 maintenance Methods 0.000 description 5
- 230000002457 bidirectional effect Effects 0.000 description 4
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
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Abstract
The utility model provides an automatic ground electrification phase separation device, which belongs to the technical field of railway locomotive power supply traction and comprises a first contact net feeder, a second contact net feeder, a third contact net feeder and an RC (resistor-capacitor) branch, wherein the first contact net feeder and the third contact net feeder are electrically connected with the second contact net feeder, and the RC branch is connected with the second contact net feeder in parallel; the RC branch circuit comprises a resistor and a capacitor, the resistor and the capacitor are connected in series, the resistor and the capacitor are electrically connected with the second contact net feeder line, and the capacitor is grounded. The utility model can inhibit transient overvoltage through RC branch circuit, to confirm the safety of locomotive, and supply maintaining current to make the loop conductive, to confirm the uninterrupted power and load work of locomotive.
Description
Technical Field
The utility model belongs to the technical field of power supply traction of railway locomotives, relates to the locomotive power supply and distribution technology, and particularly relates to a ground electrified automatic passing neutral section device.
Background
In the long-distance running process of the train, the overhead lines are powered by different power substations along the line, the current phase between each two adjacent power substations is different, a section of no-electricity area is needed to be arranged at the power supply junction of the overhead lines of the two adjacent power substations, the no-electricity area is called a phase separation area, and the process of passing a locomotive through the phase separation area is called passing phase separation.
The auto-passing phase is divided into a vehicle-mounted auto-passing phase and a ground auto-passing phase. The earliest locomotive with the vehicular passing neutral section is a manual control passing neutral section, which is triggered to open and close by embedding magnetic steel or paving radio frequency cards and other measures on an operation line, and the existing locomotive is mainly connected into automatic passing neutral section equipment through a signal control system and a locomotive main control network, so that the automatic passing neutral section of the locomotive is realized.
The existing ground automatic neutral section passing technology mainly selects an intelligent phase selecting vacuum circuit breaker as a main switch, realizes the automatic neutral section passing of the electrified train in a serial-parallel connection mode of the circuit breaker, but requires the switch to be opened and closed quickly in the switching process of different power grids, has low overvoltage and other requirements when the switch is opened and closed, and can not meet the use requirements due to the fact that the existing intelligent phase selecting vacuum circuit breaker has the problems of high transient voltage, slow mechanical stress release and the like in the opening and closing process.
Disclosure of utility model
Aiming at the problem that the prior intelligent phase-selecting vacuum circuit breaker has high transient voltage in the opening and closing process, the utility model provides a ground electrified automatic passing neutral section device.
The RC branch is arranged in the ground electrified automatic neutral section passing device, and can inhibit overvoltage in a transient process; providing a maintaining current, conducting a loop, and ensuring that the locomotive is continuously powered off; the specific technical scheme is as follows:
The ground electrified automatic passing neutral section device comprises a first contact net feeder, a second contact net feeder, a third contact net feeder and an RC branch, wherein the first contact net feeder and the third contact net feeder are electrically connected with the second contact net feeder, and the RC branch is connected with the second contact net feeder in parallel;
the RC branch circuit comprises a resistor and a capacitor, the resistor and the capacitor are connected in series, the resistor is connected with the second contact line feeder, and the capacitor is grounded.
Further defined, the RC branch further includes a fourth isolation switch in series with a resistor.
Further defined, the first contact net feeder line comprises a first main control unit and a first control switch, one end of the first main control unit is electrically connected with the first control switch, and the other end of the first main control unit is electrically connected with the second contact net feeder line;
The third contact net feeder line comprises a second main control unit and a second control switch, one end of the second main control unit is electrically connected with the second control switch, and the other end of the second main control unit is electrically connected with the second contact net feeder line.
Further defined, the first main control unit comprises a first main control switch and a first main control standby switch connected with the first main control switch in parallel, and the first main control switch is a light-operated thyristor;
The second main control unit comprises a second main control switch and a second main control standby switch connected with the second main control switch in parallel, and the second main control switch is a light-operated thyristor.
Further defined, the overhead line feeder I further comprises a first control standby switch, and the first control standby switch is connected with the first control switch in parallel;
the overhead line feeder line III further comprises a second control standby switch, and the second control standby switch is connected with the second control switch in parallel.
Further defined, the first master control unit further comprises a first isolating switch, and the first isolating switch is connected with the first master control switch in series;
The first main control unit and the second main control unit are electrically connected with the contact net feeder II through the second isolating switch;
The second main control unit further comprises a third isolating switch, and the third isolating switch is connected with the second main control switch in series.
Further defined, a first current detection point and a first voltage detection point are connected to the first contact net feeder line, and the first current detection point and the first voltage detection point are both arranged at the input end of the first control switch and the input end of the first control standby switch;
The second contact net feeder line II is connected with a second current detection point and a second voltage detection point, and the second current detection point and the second voltage detection point are both arranged at the output end of the second isolating switch;
And a third current detection point and a third voltage detection point are connected to the third contact net feeder line, and the third current detection point and the third voltage detection point are both arranged at the input end of the second control switch and the input end of the second control standby switch.
Further defined, the ground electrified automatic neutral section passing device further comprises a breakpoint one and a breakpoint two, wherein the breakpoint one is connected between an upper net point of the contact net feeder line one and an upper net point of the contact net feeder line two; the breakpoint II is connected between the upper net point of the contact net feeder II and the upper net point of the contact net feeder III.
Further defined, the ground electrified automatic neutral section passing device further comprises a first contact net point, a third contact net point and a fourth contact net point, wherein the first contact net point is arranged on one side of the first contact net feeder, which is close to the first contact net feeder, and is far away from the first breakpoint, the third contact net point is arranged between the second contact net feeder and the second breakpoint, and the fourth contact net point is arranged on one side of the second contact net feeder, which is close to the third contact net feeder, and is far away from the second breakpoint.
Further defined, the ground electrified automatic neutral section passing device further comprises a contact net upper net point II, and the contact net upper net point II is arranged between the breakpoint I and the upper net point of the contact net feeder line II.
Compared with the prior art, the utility model has the beneficial effects that:
1. the utility model relates to a ground electrified automatic neutral section passing device which comprises a first contact net feeder, a second contact net feeder, a third contact net feeder and an RC (resistor-capacitor) branch, wherein the RC branch comprises a resistor and a capacitor; the maintenance current is provided to conduct the loop, ensure the uninterrupted power on-load operation of the locomotive, maintain the traction and the running speed of the train passing through the electric split phase, effectively shorten the running time of the passing through the electric split phase, improve the comprehensive transportation capacity of the line and meet the transportation requirements of high-speed, high-slope and heavy-load railways.
2. The first main control unit comprises a first main control switch and a first main control standby switch connected with the first main control switch in parallel; the second main control unit comprises a second main control switch and a second main control standby switch connected with the second main control switch in parallel; the first main control standby switch and the second main control standby switch are arranged, so that an alternative scheme can be ensured when the first main control switch and the second main control switch fail, and the normal operation of the locomotive is ensured.
3. The first main control switch and the second main control switch are both light-operated thyristors, and the light-operated thyristors have the advantages that: ① The anti-interference performance is strong, the ② reliability is high, and the anti-overcurrent impact capability of ③ is strong; the anti-interference performance is strong, and the device can still work normally in the occasion with strong electromagnetic interference; the reliability is high, the external overvoltage protection function can be failed, the internal overvoltage protection function can still work normally, and the thyristor is subjected to overvoltage protection; the anti-overcurrent impact capability is strong, and the anti-overcurrent impact device can be more suitable for the condition of rapid change and impact of current.
4. The overhead line feeder I also comprises a first control standby switch, and the first control standby switch can be used as a substitute switch when the first control switch fails; the overhead line feeder III also comprises a second control standby switch, and the second control standby switch can be used as a substitute switch when the second control switch fails; ensuring the normal operation of the locomotive.
5. The first contact net feeder line also comprises a first isolating switch, the second contact net feeder line comprises a second isolating switch, and the third contact net feeder line also comprises a third isolating switch; the first isolating switch, the second isolating switch and the third isolating switch are used for being completely disconnected when the first main control unit and/or the second main control unit breaks down, and the first main control unit and/or the second main control unit is removed for maintenance; meanwhile, the first control switch and the second control switch are continuously put into operation, so that the normal operation of the locomotive is ensured.
6. The ground electrified automatic neutral section passing device also comprises a first contact net point, a third contact net point and a fourth contact net point, wherein the locomotive conducts the first contact net feeder line and the second contact net feeder line at one time when the locomotive contacts the first contact net point, and conducts phase A electricity to the neutral section; disconnecting the paths of the first contact net feeder and the second contact net feeder when the locomotive contacts the third net point, conducting the second contact net feeder and the third contact net feeder, and conducting B phase electricity to the split-phase area; and when the locomotive contacts the net point IV, disconnecting the contact net feeder II and the contact net feeder III so as to recover the phase separation area to a non-electric state.
7. The ground electrified automatic neutral section passing device also comprises a contact net upper net point II, wherein the contact net upper net point II is arranged to enable the bidirectional running of a train to be met, and in the bidirectional running process, when a locomotive contacts the net upper net point IV, the contact net feeder line II and the contact net feeder line are conducted in a three-way manner, and phase B electricity is conducted to a neutral section; disconnecting the overhead line feeder II and the overhead line feeder III when the locomotive contacts the overhead line site II, conducting the overhead line feeder I and the overhead line feeder II, and conducting phase A electricity to the phase separation area; and the locomotive cuts off the first contact net feeder and the second contact net feeder at one time when the locomotive contacts the net, so that the split-phase area is restored to a non-electric state.
Drawings
FIG. 1 is a schematic diagram of a ground powered auto-passing neutral section apparatus of the present utility model;
The device comprises a first locomotive, a 2-contact net feeder I, a first control switch, a first control standby switch, a 203-first isolating switch, a first master control switch, a 205-first master control standby switch, a 206-first current detection point, a 207-first voltage detection point, a 208-first lightning protection pin, a 209-first total isolating switch, a 3-contact net feeder II, a 301-second isolating switch, a 302-second current detection point, a 303-second voltage detection point, a 304-second lightning protection pin, a 305-second total isolating switch, a 4-contact net feeder III, a 401-second control switch, a 402-second control standby switch, a 403-third isolating switch, a 404-second master control switch, a 405-second master control standby switch, a 406-third current detection point, a 407-third voltage detection point, a 408-third lightning protection pin, a 409-third total isolating switch, a 5-502 branch, a 501-resistor, a capacitor, a 503-fourth voltage detection point, a 504-fourth current detection point, a 505-fourth isolating switch, a 6-RC-breakpoint, a 7-second net breakpoint, a 7-RC-second net breakpoint, a 1-third net contact point, a 3-third net contact point, and a 3-contact net, and a fourth net contact net.
Detailed Description
The technical scheme of the present utility model will be further explained with reference to the drawings and examples, but the present utility model is not limited to the embodiments described below.
Example 1
Referring to fig. 1, the ground electrified auto-passing neutral section device of the embodiment comprises a first contact net feeder 2, a second contact net feeder 3, a third contact net feeder 4 and an RC branch 5, wherein the first contact net feeder 2 and the third contact net feeder 4 are electrically connected with the second contact net feeder 3, and the RC branch 5 is connected with the second contact net feeder 3 in parallel; specifically, one end of the first contact net feeder line 2 is electrically connected with one end of the second contact net feeder line 3, the other end of the first contact net feeder line 2 is electrically connected with a contact net of the pantograph, one end of the third contact net feeder line 4 is electrically connected with one end of the second contact net feeder line 3, the other end of the third contact net feeder line 4 is electrically connected with a contact net of the pantograph, and the other end of the second contact net feeder line 3 is electrically connected with a contact net of the pantograph;
the RC branch 5 comprises a resistor 501 and a capacitor 502, the resistor 501 and the capacitor 502 are connected in series, the resistor 501 is connected with the contact net feeder line II 3, and the capacitor 502 is grounded. Specifically, one end (input end) of the resistor 501 is electrically connected to the catenary feeder line two 3, the other end of the resistor 501 is electrically connected to one end of the capacitor 502, and the other end (output end) of the capacitor 502 is grounded.
The RC branch 5 further includes a fourth isolating switch 505, where the fourth isolating switch 505 is connected in series with the resistor 501, and specifically, one end (input end) of the resistor 501 is electrically connected to the catenary feeder line two 3 through the fourth isolating switch 505.
The ground electrified automatic neutral section passing device of the embodiment further comprises a breakpoint one 6 and a breakpoint two 7, wherein the breakpoint one 6 is connected between the upper net point of the contact net feeder line one 2 and the upper net point of the contact net feeder line two 3; the breakpoint II 7 is connected between the upper net point of the contact net feeder II 3 and the upper net point of the contact net feeder III 4. Specifically, the region between the break point one 6 and the break point two 7 is a phase separation region.
In the embodiment, when the upper mesh point of the contact net feeder I2 and the upper mesh point of the contact net feeder II 3 are conducted, phase A electricity is supplied to the phase separation area, when the upper mesh point of the contact net feeder II 3 and the upper mesh point of the contact net feeder III 4 are conducted, phase B electricity is supplied to the phase separation area, and when the upper mesh point of the contact net feeder I2, the upper mesh point of the contact net feeder II 3 and the upper mesh point of the contact net feeder III 4 are all disconnected, the phase separation area is in a non-electricity state.
In the embodiment, the capacitor 502 is arranged in the RC branch 5, and the capacitor 502 can inhibit transient process overvoltage and provide maintenance current when the first contact net feeder 2 is connected with the second contact net feeder 3 or when the second contact net feeder 3 is connected with the third contact net feeder 4, and the safety of the locomotive 1 is ensured by inhibiting transient voltage so as to protect the locomotive 1; the maintenance current can lead the loop to be conducted, ensure that the locomotive 1 is continuously powered off and works with load, keep the traction and the running speed of the train passing through the electric split phase, effectively shorten the running time of the passing split phase, improve the comprehensive transportation capacity of the line and meet the transportation demands of high-speed, high-slope and heavy-load railways.
Example 2
In the ground electrification automatic phase separation device of the embodiment, on the basis of embodiment 1, a first contact net feeder line 2 comprises a first main control unit and a first control switch 201, one end of the first main control unit is electrically connected with the first control switch 201, and the other end of the first main control unit is electrically connected with a second contact net feeder line 3; specifically, one end of the first main control unit is electrically connected with one end of the first control switch 201, the other end of the first main control unit is electrically connected with the contact net feeder line II 3, and the other end of the first control switch 201 is electrically connected with the contact net of the pantograph;
The overhead line feeder line III 4 comprises a second main control unit and a second control switch 401, one end of the second main control unit is electrically connected with the second control switch 401, and the other end of the second main control unit is electrically connected with the overhead line feeder line II 3. Specifically, one end of the second main control unit is electrically connected with one end of the second control switch 401, the other end of the second main control unit is electrically connected with the second contact net feeder line 3, and the other end of the second control switch 401 is electrically connected with the contact net of the pantograph.
The first main control unit comprises a first main control switch 204 and a first main control standby switch 205 connected in parallel with the first main control switch 204, and the first main control switch 204 is a light-operated thyristor; the first master control standby switch 205 is used for being put into use when the first master control switch 204 fails, so as to ensure the normal operation of the locomotive 1;
The second main control unit comprises a second main control switch 404 and a second main control standby switch 405 connected in parallel with the second main control switch 404, wherein the second main control switch 404 is a light-operated thyristor; the second master control standby switch 405 is used to be put into use when the second master control switch 404 fails, so as to ensure the normal operation of the locomotive 1.
The light-operated thyristor has the advantages of strong anti-interference performance, high reliability and strong overcurrent impact resistance; the anti-interference performance is strong, and the device can still work normally in the occasion with strong electromagnetic interference; the reliability is high, and when the external overvoltage protection function fails, the internal overvoltage protection function can still work normally to perform overvoltage protection on the thyristor; the anti-overcurrent impact capability is strong, and the anti-overcurrent impact device can be more suitable for the condition of rapid change and impact of current.
The overhead line feeder one 2 of the present embodiment further includes a first control backup switch 202, where the first control backup switch 202 is connected in parallel with the first control switch 201; the first control standby switch 202 is used for being put into use when the first control switch 201 fails, so as to ensure the normal operation of the locomotive 1;
the overhead line feeder three 4 further comprises a second control standby switch 402, and the second control standby switch 402 is connected with the second control switch 401 in parallel; the second control backup switch 402 is used to be put into operation when the second control switch 401 fails, so as to ensure the normal operation of the locomotive 1.
Example 3
In the ground electrification automatic phase separation device of the embodiment, on the basis of embodiment 2, the first main control unit further comprises a first isolating switch 203, the first isolating switch 203 is connected in series with a first main control switch 204, specifically, one end of the first isolating switch 203 is electrically connected with the output end of the first control switch 201 and one end of the first main control standby switch 205, the other end of the first isolating switch 203 is electrically connected with one end of the first main control switch 204, and the other end of the first main control switch 204 is electrically connected with the other end of the first main control standby switch 205;
The overhead line feeder II 3 comprises a second isolating switch 301, the first main control unit and the second main control unit are electrically connected with the overhead line feeder II 3 through the second isolating switch 301, specifically, one end of the second isolating switch 301 is electrically connected with the first main control switch 204 and the second main control switch 404, and the other end of the second isolating switch 301 is electrically connected with the overhead line feeder II 3;
The overhead line feeder line three 4 further comprises a third isolating switch 403, the third isolating switch 403 is connected in series with the second main control switch 404, specifically, one end of the third isolating switch 403 is electrically connected with the output end of the second control switch 401 and one end of the second main control standby switch 405, the other end of the third isolating switch 403 is electrically connected with one end of the second main control switch 404, and the other end of the second main control switch 404 is electrically connected with the other end of the second main control standby switch 405.
In this embodiment, the first isolating switch 203, the second isolating switch 301, and the third isolating switch 403 are configured to be completely turned off when the first main control unit and/or the second main control unit fail, and remove the first main control unit and/or the second main control unit for maintenance; at the same time, the first control switch 201 and the second control switch 401 are continuously put into operation, so that an alternative scheme is formed, and the normal operation of the locomotive 1 is ensured.
In the embodiment, a first current detection point 206 and a first voltage detection point 207 are connected to a first catenary feeder line 2, and the first current detection point 206 and the first voltage detection point 207 are both arranged at the input end of a first control switch 201 and the input end of a first control standby switch 202;
A second current detection point 302 and a second voltage detection point 303 are connected to the second contact net feeder line 3, and the second current detection point 302 and the second voltage detection point 303 are both arranged at the output end of the second isolating switch 301;
A third current detection point 406 and a third voltage detection point 407 are connected to the catenary feeder line three 4, and the third current detection point 406 and the third voltage detection point 407 are both arranged at the input end of the second control switch 401 and the input end of the second control standby switch 402.
In this embodiment, the current value and the voltage value on the contact net feeder line one 2 can be detected through the first current detection point 206 and the first voltage detection point 207, the current value and the voltage value on the contact net feeder line two 3 can be detected through the second current detection point 302 and the second voltage detection point 303, and the current value and the voltage value on the contact net feeder line three 4 can be detected through the third current detection point 406 and the third voltage detection point 407.
Example 4
The ground electrification automatic phase separation device of this embodiment, on the basis of embodiment 3, it still includes contact net on-net site one J1, contact net on-net site three J3 and contact net on-net site four J4, contact net on-net site one J1 sets up and is close to the upper net site of contact net feeder one 2 and keeps away from one side of breakpoint one 6, contact net site three J3 sets up between upper net site and breakpoint two 7 of contact net feeder two 3, contact net on-net site four J4 sets up and is close to the upper net site of contact net feeder three 4 and keeps away from one side of breakpoint two 7. Specifically, when the locomotive 1 contacts the first net point J1 on the net, the upper net point of the first net feeder 2 and the upper net point of the second net feeder 3 are conducted, and phase A electricity is conducted to the phase separation area; when the locomotive 1 contacts the overhead net three J3, the upper net point of the overhead net feeder I2 and the upper net point of the overhead net feeder II 3 are disconnected, the upper net point of the overhead net feeder II 3 and the upper net point of the overhead net feeder III 4 are conducted, and B phase electricity is conducted to the phase separation area; when the locomotive 1 contacts the overhead net point four J4, the overhead net point of the overhead net feeder line two 3 and the overhead net point of the overhead net feeder line three 4 are disconnected, so that the phase separation zone is restored to the electroless state.
The ground electrified automatic neutral section passing device of the embodiment further comprises a contact net upper net point II J2, wherein the contact net upper net point II J2 is arranged between the breakpoint I6 and the upper net point of the contact net feeder line II 3. The two-J2 contact net is arranged, so that the bidirectional running of the train can be met, and in the bidirectional running process, when the locomotive 1 contacts the four-J4 contact net, the upper net point of the second contact net feeder 3 and the upper net point of the third contact net feeder 4 are conducted, and B phase electricity is conducted to the phase separation area; when the locomotive 1 contacts the upper net point II J2 of the overhead line system, the upper net point of the overhead line system feeder II 3 and the upper net point of the overhead line system feeder III 4 are disconnected, the upper net point of the overhead line system feeder I2 and the upper net point of the overhead line system feeder II 3 are conducted, and phase A electricity is conducted to a phase separation area; when the locomotive 1 contacts the overhead net point one J1, the overhead net point of the overhead net feeder line one 2 and the overhead net point of the overhead net feeder line two 3 are disconnected, so that the phase separation zone is restored to the electroless state.
The first lightning protection pin 208 and the first total isolation switch 209 are further connected to the first catenary feeder line 2 of the present embodiment, the first lightning protection pin 208 and the first current detection point 206 and the first voltage detection point 207 are both connected to the input end of the first control switch 201 and the input end of the first control backup switch 202, and the first lightning protection pin 208 and the first current detection point 206 and the first voltage detection point 207 are connected in series to the first catenary feeder line 2, and meanwhile, the first lightning protection pin 208 and the first current detection point 206 and the first voltage detection point 207 are disposed between the first total isolation switch 209 and the first control switch 201.
The second lightning protection needle 304 and the second total isolating switch 305 are connected to the second contact net feeder line 3 of the embodiment, specifically, the second lightning protection needle 304 and the second total isolating switch 305 are all disposed at the output end of the second isolating switch 301, the second lightning protection needle 304 and the second total isolating switch 305 are connected in series, and the second lightning protection needle 304 and the second total isolating switch 305 are all connected in parallel with the RC branch 5.
The third lightning protection pin 408 and the third total isolating switch 409 are further connected to the third feeder line 4 of the overhead line of the embodiment, the third lightning protection pin 408 and the third current detection point 406 and the third voltage detection point 407 are both connected to the input end of the second control switch 401 and the input end of the second control standby switch 402, the third lightning protection pin 408 and the third current detection point 406 and the third voltage detection point 407 are connected in series to the third feeder line 4 of the overhead line, and meanwhile the third lightning protection pin 408 and the third current detection point 406 and the third voltage detection point 407 are arranged between the third total isolating switch 409 and the second control switch 401.
The RC branch 5 of the present embodiment is connected with a fourth voltage detection point 503 and a fourth current detection point 504, where the fourth voltage detection point 503 is connected in parallel with the capacitor 502, and the fourth current detection point 504 is disposed between the input end of the resistor 501 and the catenary feeder line two 3.
Claims (10)
1. The ground electrified automatic passing neutral section device is characterized by comprising a first contact net feeder (2), a second contact net feeder (3), a third contact net feeder (4) and an RC (resistor-capacitor) branch (5), wherein the first contact net feeder (2) and the third contact net feeder (4) are electrically connected with the second contact net feeder (3), and the RC branch (5) is connected with the second contact net feeder (3) in parallel;
The RC branch circuit (5) comprises a resistor (501) and a capacitor (502), the resistor (501) and the capacitor (502) are connected in series, the resistor (501) is connected with the contact net feeder line II (3), and the capacitor (502) is grounded.
2. The ground-powered auto-passing neutral section device of claim 1, characterized in that the RC branch (5) further comprises a fourth isolation switch (505), the fourth isolation switch (505) being in series with a resistor (501).
3. The ground live automatic passing neutral section device as claimed in claim 1, wherein the overhead line feeder one (2) comprises a first main control unit and a first control switch (201), one end of the first main control unit is electrically connected with the first control switch (201), and the other end of the first main control unit is electrically connected with the overhead line feeder two (3);
The overhead line feeder III (4) comprises a second main control unit and a second control switch (401), one end of the second main control unit is electrically connected with the second control switch (401), and the other end of the second main control unit is electrically connected with the overhead line feeder II (3).
4. A ground powered auto-passing neutral section as claimed in claim 3, characterized in that the first main control unit comprises a first main control switch (204) and a first main control backup switch (205) connected in parallel with the first main control switch (204), the first main control switch (204) being a photo thyristor;
The second main control unit comprises a second main control switch (404) and a second main control standby switch (405) connected with the second main control switch (404) in parallel, and the second main control switch (404) is a light-operated thyristor.
5. A ground powered auto-passing neutral section as claimed in claim 3, characterized in that said catenary feeder one (2) further comprises a first control backup switch (202), said first control backup switch (202) being connected in parallel with the first control switch (201);
The overhead line feeder three (4) further comprises a second control standby switch (402), and the second control standby switch (402) is connected with the second control switch (401) in parallel.
6. The ground powered auto-passing neutral section device of claim 4, wherein the first master control unit further comprises a first isolation switch (203), the first isolation switch (203) being in series with a first master control switch (204);
The overhead line feeder II (3) comprises a second isolating switch (301), and the first main control unit and the second main control unit are electrically connected with the overhead line feeder II (3) through the second isolating switch (301);
the second main control unit further comprises a third isolating switch (403), and the third isolating switch (403) is connected with the second main control switch (404) in series.
7. The ground live automatic neutral section passing device according to claim 6, wherein a first current detection point (206) and a first voltage detection point (207) are connected to the first catenary feeder line (2), and the first current detection point (206) and the first voltage detection point (207) are both arranged at an input end of the first control switch (201) and an input end of the first control standby switch (202);
A second current detection point (302) and a second voltage detection point (303) are connected to the contact net feeder line II (3), and the second current detection point (302) and the second voltage detection point (303) are both arranged at the output end of the second isolating switch (301);
And a third current detection point (406) and a third voltage detection point (407) are connected to the overhead line feeder line III (4), and the third current detection point (406) and the third voltage detection point (407) are both arranged at the input end of the second control switch (401) and the input end of the second control standby switch (402).
8. The ground live automatic passing neutral section device according to claim 1, further comprising a first breakpoint (6) and a second breakpoint (7), wherein the first breakpoint (6) is connected between an upper net point of the first catenary feeder (2) and an upper net point of the second catenary feeder (3); the breakpoint II (7) is connected between the upper net point of the contact net feeder II (3) and the upper net point of the contact net feeder III (4).
9. The ground-powered auto-passing neutral section device of claim 8, further comprising a contact on-net dot one (J1), a contact on-net dot three (J3), and a contact on-net dot four (J4), wherein the contact on-net dot one (J1) is disposed on a side of the upper net dot that is proximate to the contact net feeder one (2) and that is distal to the break point one (6), the contact on-net dot three (J3) is disposed between the upper net dot of the contact net feeder two (3) and the break point two (7), and the contact on-net dot four (J4) is disposed on a side of the upper net dot that is proximate to the contact net feeder three (4) and that is distal to the break point two (7).
10. The ground powered auto-passing neutral section device of claim 9, further comprising a contact net top net point two (J2), the contact net top net point two (J2) being disposed between the break point one (6) and the top net point of the contact net feeder line two (3).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322466630.5U CN220973977U (en) | 2023-09-11 | 2023-09-11 | Ground electrified automatic passing neutral section device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322466630.5U CN220973977U (en) | 2023-09-11 | 2023-09-11 | Ground electrified automatic passing neutral section device |
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| CN220973977U true CN220973977U (en) | 2024-05-17 |
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| CN202322466630.5U Active CN220973977U (en) | 2023-09-11 | 2023-09-11 | Ground electrified automatic passing neutral section device |
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