JP3666202B2 - Switching circuit breaker individual automatic interlocking device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an individual automatic interlocking device for a switching circuit breaker that controls a switching circuit breaker that switches a power source of a neutral section in accordance with the traveling of a train at a different power source match point of a Shinkansen.
[0002]
[Prior art]
Since the switching breakers at the different power source matching points (feeding section and substation) on the Shinkansen are controlled according to the train running, high speed processing, high reliability, and high frequency are required. The control circuit called is configured using a hard relay.
[0003]
As shown in FIG. 3, in the neutral section power supply switching circuit, the switching breaker 52S is composed of a single-phase vacuum switch, and is used as the name of the A breaker and B breaker for the section section of the downlink or the uplink, respectively. Provided with _one set of two normal circuit breakers 52SA ₁ and 52SB ₁ and two sets of spare circuit breakers 52SA ₂ and SB _2. use.
[0004]
As shown in FIG. 4, when the train position passes from the section S _A through the neutral section S _N to the section S _B , the power of the neutral section S _N is switched when the train T enters the switching track circuit R ′. Due to the track circuit signal generated at the time, the power supply is switched from the A substation power supply to the B substation power supply by a power failure for a short time (no voltage time of 0.25 seconds to 0.35 seconds) that does not disturb the train operation.
[0005]
Conventionally, this power source switching is performed as follows.
a. Until the train enters the switching track circuit R ′, the A circuit breaker is turned on and the neutral section _SN is pressurized by the power source of the A substation. (Train position 1.)
b. When the train enters the switching track circuit R ′, the A circuit breaker is opened, the B circuit breaker is turned on, and the neutral section _SN is pressurized by the power source of the B substation. (Train position 2.)
c. When the train passes through the switching track circuit R ′, the B circuit breaker is opened and the A circuit breaker is turned on. Return to the power supply state and prepare for the next signal. (Train position 3.).
[0006]
[Problems to be solved by the invention]
By the way, if the switching interlocking process for switching the power source is performed by a hardware circuit, the amount of hardware increases and the number of required panel surfaces of the switchboard increases, which is contrary to space saving at the time of replacement.
[0007]
This invention is a switching circuit breaker individual automatic interlocking device that can reduce the number of panel surfaces and reduce costs by securing the safety system with hardware and performing the automatic switchover interlocking process with the programmable controller (PC) of the distribution board for electric railway. Is to provide.
[0008]
[Means for Solving the Problems]
The switching circuit breaker individual automatic interlocking device according to the present invention has an individual automatic interlocking circuit for switching and controlling the A circuit breaker and B circuit breaker connected to the neutral section in accordance with the traveling of the train, and the programmable controller of the switchboard is duplicated. The circuit for controlling the opening or closing of the A circuit breaker or B circuit breaker in the individual automatic interlocking circuit is configured by performing parallel processing and performing logical sum output. A circuit for checking the contradictory of input and output, and when there is a first and second output of the command on condition that there is an output of the contradiction check circuit by hardware processing, It is characterized by comprising a circuit for controlling the charging.
[0009]
DETAILED DESCRIPTION OF THE INVENTION
An embodiment of the present invention will be described with reference to FIGS.
In the present invention, the individual automatic interlock circuit is softwareized by a programmable controller (PC) installed in a distribution board for electric railways. The PC uses a high-speed one that can process 8K _S within 20 ns, is duplicated, performs parallel processing, and performs OR output. Secure the security system by hardware.
[0010]
FIG. 1 shows a software processing flow of switching control by a PC. The introduction of the A machine and the B machine (A circuit breaker, B circuit breaker) in FIG. 1 is performed by the switching interlocking process shown in FIG.
[0011]
First, the 1-system switching interlocking process of FIG. 2 will be described. When a closing command is input to the relay means 4C1, the relay means outputs output signals DO1 and DO2 for 1 second. This output signal DO1, DO2, and Chetsuku input signals DI1, DI2 from D / I in contradiction Chetsuku means 10 based on this signal, biasing the hard relay NR1 check with the timer T _1.
[0012]
As a result, the hard relays 4C11 and 4C12 are energized by the output signals DO1 and DO2 via the contacts NR1-1 and NR1-2 of the relay NR1, and the circuit breaker 52S (A machine or B machine is provided via the output contacts 4C11 and 4C12. ).
[0013]
The 2 system processing is performed in the same manner as the 1 system processing, and the 1 system and 2 system OR outputs. Moreover, although FIG. 2 is the circuit breaker closing process in the switching interlocking process, the opening process is similarly performed.
[0014]
Next, with reference to FIG. 1, the software processing for switching control between the A machine and the B machine by the PC in the case of the down line will be described. In the case where the train T as shown in FIG. 3 come into neutral section from the section S _A side, conventional instrument A machine is in on state, B machine in the open state.
[0015]
First, at 101, it is determined from the track signal of the track circuit R 'in FIG. 4 whether the train has completely entered the neutral section _SN . If the determination result is Y, Aircraft A issues an opening command (102). In response to this release command, the machine A is released by the same software processing as in FIG. 2 (103). Based on the presence / absence of the A machine auxiliary contact signal, the A machine closed state is determined. After 300 ms from the A machine opening command, if the A machine is closed, the feeder circuit breakers 52F ₁ and 52F ₂ are cut off as switching congestion (104 , 105, 106, 125).
[0016]
If it is determined at 105 that A is closed N and it is confirmed that Aircraft A is open, Aircraft B input command is output after the elapse of 150 ms (107, 108). In response to the B machine input command, the B machine is input by the software processing of FIG. 2 (109). Looking at the open state of the aircraft B, If, after 300ms passed from B machine closing command is open B machine to cut off the Suida breaker 52F _1, 52F ₂ as the switching congestion (110,111,112,125) .
[0017]
If it is determined in 111 that it is determined that the Aircraft B is open N and it is confirmed that the Aircraft B is turned on, it is confirmed from the track signal whether the train has completely exited from the neutral section, and an Aircraft B release command is issued (113, 114). In response to the opening command, the machine B is opened by the same software processing as in FIG. 2 (115). Looking at the closed state of B machine, if the B machine remains closed even after 300 ms has elapsed from the B machine release command, the feeder circuit breakers 52F ₁ and 52F ₂ are cut off as switching congestion (116, 117, 118, 125).
[0018]
If it is determined at 117 that the B machine is closed N and it is confirmed that the B machine is released, the A machine input command is output after the elapse of 150 ms (119, 120). In response to the A machine input instruction, the A machine is input by the software processing of FIG. 2 (121). Looking at the open state of the A machine, be 300ms elapsed since A machine closing command when the left A machine open to cut off the feeder breaker 52F _1, 52F ₂ as the switching congestion (122, 123, 124, and 125 ). If it is determined that Aircraft A is open N, the process returns to 101 to perform switching control for the next train.
[0019]
As described above, since the switching is performed while confirming the position of the train and the on / off states of the A and B machines by the PC software processing, the power supply of the train traveling at high speed can be switched safely and reliably. The 2 system performs the same software processing as the 1 system and outputs the 1 system and 2 system OR.
[0020]
【The invention's effect】
As described above, since the switching control processing of the switching circuit breaker used in the different power source butt location is performed by the programmable controller of the switchboard as described above, the amount of hardware can be reduced and the number of panel surfaces can be reduced, thereby reducing the cost. Is possible.
[Brief description of the drawings]
FIG. 1 is a software processing flowchart of switching control by a programmable controller (PC).
FIG. 2 is an image diagram of switching interlock processing.
FIG. 3 is a switching circuit breaker connection diagram.
FIG. 4 is a principle diagram of a switching open / close method.
[Explanation of symbols]
S _A , S _B ... train line section S _N ... neutral section 52SA, 52SB ... A machine (A circuit breaker), B machine (B circuit breaker)
52F _A , 52F _B ... Feeder circuit breaker.

Claims (2)

A separate automatic interlocking circuit that switches and controls the A circuit breaker and B circuit breaker that connect different power sources to the neutral section according to the running of the train, has a configuration that performs parallel processing by making the programmable controller of the switchboard redundant, A circuit for controlling the opening or closing of the A circuit breaker or the B circuit breaker in the individual automatic interlocking circuit; a circuit for checking a contradiction between the first and second input and output of the opening command or the closing command by software processing; It is characterized by comprising a circuit for controlling the opening or closing of the circuit breaker by the logical product when the first and second outputs of the command are present on condition that the anti-check circuit output is obtained by processing. Switching circuit breaker individual automatic interlocking device. In claim 1,
The individual automatic interlock circuit includes each closing determination unit that determines whether the A breaker or the B breaker is closed according to the A breaker or B breaker opening command, and the A breaker or B according to the A breaker or B breaker input command. Each open determination unit that determines whether to open the circuit breaker, and when all the feeders that supply power to each section are cut off when the determination result of the open or close determination unit is Y after the opening or closing command has elapsed A switching circuit breaker individual automatic interlocking device comprising a feeder circuit breaker control circuit for outputting a device opening command.

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