JPH02219398A - Link line detour control system - Google Patents

Abstract

PURPOSE:To eliminate necessity to set an exclusive communication line for detour control and to simplify a remote control monitoring device in a transfer substation, etc., by separately providing devices, which execute information connection by a special code, in normal and auxiliary link lines and controlling the connection and separation of the both link lines. CONSTITUTION:When disconnection is generated in a place ssa to be controlled in normal link lines LAP, LAN, LBP and LBN, a controller CC sends the prescribed special code to the normal link line in order to execute detour control. This special code is monitored by a special code monitor part ESW, which is connected to the side of a controlling place CC in the normal link line, and detected by a special code detection part ESWXc which executes the information connection according to the special code. As a result, the controlling place CC side terminal in the normal link line and a terminal in the side of the auxiliary link lines LAPx, LANx, LBPx and LBNx are connected by a bypass control signal parallel processing part ESWZa. Thus, the link line to detour the spot of disconnection accident due to the auxiliary link line is constituted and the remote monitor control can be executed by the normal remote controller CC.

Description

DETAILED DESCRIPTION OF THE INVENTION A. Field of Industrial Application The present invention relates to a connection line detour control method for a remote monitoring and control device that centrally controls a plurality of substations and the like.

B9 Summary of the Invention The present invention provides a system in which when a regular communication line of a remote monitoring and control device is disconnected, a communication path that detours around the disconnection point is configured using a backup communication line, and monitoring and control is carried out. By installing a device for communicating information on each of the regular and standby communication lines, and controlling the connection and disconnection of the above-mentioned two-speed connection lines, the installation of a dedicated communication line etc. for communication line detour control is unnecessary. , which aims to simplify the remote monitoring and control device.

C0 Conventional technology Since the control of electric railway substations, etc. is arranged in a linear manner, a so-called centralized method is often used in which multiple controlled stations are connected in parallel to one set of connecting lines. .

Currently, a centralized remote monitoring and control device (hereinafter referred to as the remote control device) called the Tetsuken B type (hereinafter referred to as the B type) is widely used in the electric railway substations of the conventional lines of JR companies. However, in these centralized systems, there is a problem in that when a communication line is disconnected, it is not limited to one controlled station, but may interfere with the monitoring and control of a plurality of controlled stations.

Even if there are operational problems in some sections of the railway,
Since trains are operated in series, problems can occur over a wide area, so remote control devices used in electric railway substations and the like are required to have high reliability. For this purpose, if there is enough communication cable to be used as a contact line,
In addition to the regular communication line, a backup communication line should be provided, and in the event of a disconnection accident, the backup communication line can be used to create a detour so that monitoring and control can continue. be.

FIG. 5 shows an example of this. In this example, the control for connecting and disconnecting the regular communication line and the backup communication line (hereinafter referred to as detour control) is performed on the carrier communication line. This is done using a separate control device.

In FIG. 5, it is assumed that a disconnection occurs in the regular communication line between the controlled station devices SSc and SSd as shown in the figure. In this case, the detour device slave stations SWa and SWe turn on the switches respectively inserted in the backup contact line in response to a command from the contact line detour device master station. As a result, the controlled station devices SSa, S
Sb and SSc are connected to the controlled station device SSd via a regular communication line.
, SSe communicates with the control center equipment via the backup communication line.

D1 Problems to be Solved by the Invention As mentioned above, the detour control device is relatively complex, requires a separate communication line for this device, and is expensive. Moreover, although not shown in FIG. 5, the detour control device is provided for the regular communication line on the side of the controlled station device SSf, so the scale of the entire device becomes very large.

An object of the present invention is to improve a part of the circuit of the current remote control device or add a simple circuit, so that a detour control signal based on the communication signal of the remote control device can be transmitted and received through the regular communication line and the backup communication line. An object of the present invention is to provide a contact line detour control method that can perform detour control.

E9 Means for Solving Problems The present invention provides a control center device of a remote monitoring and control device that centrally controls a plurality of substations, etc., and a regular communication system that is a set of multiple lines that connect a plurality of controlled station devices in parallel. and a backup communication line of the same number of lines, and when the regular communication line becomes disconnected, connect the control center side terminal of the regular communication line and the control center side terminal of the backup communication line, In a system that enables monitoring and control by connecting the end of a regular communication line and the end of a backup communication line, in addition to a remote control device that verifies and confirms a selection code using an ordinary code and a return code, A device that communicates information using a special code that can be distinguished from the normal code by changing the length of the code is connected to the regular communication line and the backup communication line, thereby controlling the connection and disconnection of both communication lines. It is characterized by

When a disconnection occurs on the controlled station side of the F0 action regular communication line, the control station device sends a special code for performing detour control to the regular communication line. This special code is detected by a device connected to the control center side of the regular communication line and communicating information using the special code. Then, the device connects the control center side terminal of the regular communication line and the control center side terminal of the backup communication line, and performs control to connect the end of the regular communication line and the end of the backup communication line. As a result, a connecting route is constructed that detours around the disconnection accident point using the backup connecting line, and normal remote monitoring and control is performed.

Since the special code has a different length from the normal code, even if the normal code changes from a code indicating a predetermined meaning to a code indicating another meaning in the disconnection state, it will not be an error. .

Detour control can be performed simply by detecting the presence of a special code on the regular and backup communication lines, so existing communication lines can be used, and there is no need to install a separate communication line to send and receive detour control signals. , the configuration of the remote monitoring and control device is simplified.

G. Embodiment Hereinafter, an embodiment of the present invention will be described with reference to the drawings.

The present invention utilizes the time when general monitoring and control communication is not performed by the remote control device, and the present invention can be easily applied to any remote control device that allows this. An example of application to the Tetsuken B-type remote control device widely used by JR trains will now be described.

Figure 6 shows a principle diagram of the transmission/reception circuit connection of the Tekkan B-type remote control device.
LAI, LA2. LBI and LB2) are connected in parallel.

The 4 contact lines are divided into 8 lines and 8 lines, which are used to transmit information by sending and receiving DC pulse signals.

B in FIG. 6 indicates a DC power supply, and TΔP.

TAN, TBP, and TBN are the contacts of the transmitting relay, and the symbols in the figure are switching contacts (transfer contacts). (The coil of the transmitter relay is in the logic circuit, so
The illustration is omitted here. ) RAP RAN, RBP and RBN are receiving relays, D is a diode. In this figure, only the transmitting/receiving circuit of the control center is shown, but the transmitting/receiving circuit of each controlled station is also omitted because it is the same as the control center.

When transmitting relay TAP is in operation, DC power supply B
The positive terminal of is connected to the connecting line LAI, and the negative terminal is connected to the connecting line LA2.
A voltage is applied to the A line. (The voltage in this case is called a positive voltage.) Also, when the transmitting relay TAN is in operation, the positive pole of the DC power supply B is connected to the connecting wire LA.
2 and its negative pole is connected to the communication line LAI, and a voltage of opposite polarity to that in the case of TAP is applied to the A line.

(The voltage in this case is called a negative voltage.) Similarly, for the third line, when the TBP is in the operating state, a positive voltage is applied, and when the TBN is in the operating state, a negative voltage is applied. .

When a positive voltage is applied to the A line, the receiving relay RAP operates at the control station as shown in the figure, and the RAP operates similarly at each controlled station.

Similarly, when a negative voltage is applied to the incoming line, the reception relay RAN of the control center and each controlled station operates, and similarly for the three lines, RBP is applied to the positive voltage, and RBP is applied to the negative voltage. For this, RBN operates.

The above is an overview of the configuration and operation of the transmitting/receiving circuit.In order to communicate information between the control center and the controlled station, these voltages are pulsed, and positive voltage (+) and negative voltage (-) are used. , and no voltage (0), and several of these pulse signals are connected to form a selection code or a reply code.

Table 1 shows the codes representing the combination of pulse signals of two lines A and H.
The status is displayed and communicated by transmitting a selection code, a reply code, and a command code, as shown in FIG.

Table 1 Pulse Signal Combination Codes Something like the one shown in Figure 7 is called communication using ordinary codes, but the Tekkan B-type remote control device can also communicate using special codes as shown in Figure 8. .

This special code is used when an abnormality occurs in a remote control device, to search for the controlled station where the abnormality has occurred, to perform start-up operations when the abnormality has been recovered, or to use the substation These controls were established to carry out emergency stop operations, but these control communications do not use return codes, unlike regular code communication, and are sent unilaterally from the control center. ing.

The special code consists of two pulse signals, as shown in Figure 8, and the first pulse signal (hereinafter referred to as the first step) is made sufficiently long to be distinguishable from the normal code. . The second pulse signal (hereinafter referred to as the second step) has the same length as the ordinary code.

Further, the first step of the special code is an X code.

When applying the present invention to the Tetsuken B-type, this special code is intended to be used, and Table 2 shows the special code used as a remote control device and the communication line detour control of the present invention. Indicates a special code.

(Leaving space below) Table 2 Special code table ``Abnormality investigation'', ``Fall release'', and ``All emergency stop'' in Table 2 are used as remote control devices.

Detour control of contact lines will not exceed two locations, so
In order to control each connection (on) and connection/disconnection/disconnection, four items of special control are provided, and the symbols Y, T, R, and U are used for the second step.

FIG. 1 shows an example of the configuration of a communication line detour control device according to the method of the present invention. CC in FIG. 1 shows the control center device of the remote control device, but its circuit diagram is omitted.

SSa, SSb, SSc, SSd, and SSe indicate controlled station devices (5 locations) of the remote control device, or their circuit diagrams are omitted.

LAP, LAN, LBP, and LBH are regular communication lines, and the control center and each controlled station are connected in parallel through these lines.

This figure shows the case where the control center is located near the SSc, and the group of controlled stations are arranged in two directions, the left direction and the right direction.

LAPx, LANx, LBPx, and LBNx are backup communication lines for the section in the left direction (hereinafter referred to as the X direction) from the control center, and LAPy.

LANy, LBPy, and LBNV are backup communication lines for the section to the right (hereinafter referred to as the X direction) from the control center, and these backup communication lines are normally separated from the regular communication lines. When the regular contact line is disconnected, both ends of the backup contact line in that section are connected to the regular link line, forming a so-called detour route.

ESW (c) is the end of the backup communication line on the control center side (the first
In the case of the figure, it is a special code monitoring unit for detour control installed in the control center), which constantly monitors the code of the regular communication line and determines whether or not there is a code on the communication line and the type of code.

It has the function of detecting the length of the code, Stellar, etc.

An example of a wiring diagram of this circuit is shown in FIG. 2(a).

Note that P and N in E SW (c) in the figure indicate a DC power supply supplied from the outside (such as a remote control device).

ESWX(c) in FIG. 1 is a special code detection unit that is combined with the ESW(c) and determines the content of the special code, and has two types of control ( It has a function of detecting four types of special codes for closing and opening of detours, and when these special codes are detected, it outputs open/close signals to output terminals X+, Xt, and Yl, Y2.

This opening/closing signal is distinguished by the polarity of the voltage. Note that P and N between ESW (c) are DC power supplies, and at the second step of the ES special code, a positive DC voltage is applied. This is a signal line that is in a pressure state (hereinafter referred to as an ON state). An example of a wiring diagram of this circuit is shown in FIG. 2(b).

RYX in Fig. 1 is the detour opening/closing part in the X direction, and ES
Connect to the output terminals X+ and Xt of W and X(c). The detour opening/closing section RYX is constituted by a magnetic retention relay whose operating direction is determined by the polarity of the voltage applied to the coil, and which maintains that state even if the coil becomes non-voltage when operated in the negative direction. This relay shall have at least five contact points and shall be capable of opening/closing the connecting wire (four strips) and displaying its status. The status display circuit is shown in the diagram.
x.

It is indicated by I2x, and in this case, it is assumed to be taken into the control center device of the remote control device.

RYY is a detour opening/closing part in the X direction, and EXWX(c
) output terminal Y1. It is connected to Y2, and its operation is the same as that of RYX. This detour opening/closing part RYX, R
An example of the circuit connection diagram of YY is shown in FIG. 2(b).

E SW (a) in FIG. 1 is a special code monitoring unit provided at the terminal of the backup connection line in the X direction (near SSa). The circuit connection of this is the same as the above (ESW (C)) and operates in the same way, but with direct current (P).

N) is supplied from SSa.

E SW (e) is the terminal (S
This is a special code monitoring unit provided in the vicinity of E SW (a), and its configuration and operation are the same as those of E SW (a).

ESWS (a) is a special code detection unit that is combined with E SW (a) and determines the content of the special code,
The circuit configuration is the same as that of ESWX (C).

However, since this application is intended for only one direction (X direction), only the output terminals X+ and Xt are used.

(Although internal wiring for the X direction is not necessary, it is kept the same for standardization purposes.) ESWS
(e) is X used in combination with E S W (e)
This is a special code detection unit that targets the direction, and its circuit configuration is the same as that of ESWX (c), and the output terminals are Yl and Y.
Use 2.

ESWM (a) is a special code detection unit for the X direction that is used in combination with a special code detection unit of a remote control device of the terminal controlled station (SSa) in the X direction, and this circuit configuration and output The method of using the terminal is the same as that of the ESWS (a).

The remote control device for the controlled station has special controls such as "abnormality investigation", and its special control monitoring section is equipped with the ESW (Fig. 2(a)).
c), so ESWM (N ) is coupled to this.

Similarly, a special code detection unit ESWM(e) is also provided at the terminal controlled station (SSe) in the X direction.

ESWZ (a) combines ESWS (a) and ESWM (a), processes in parallel the special control signal received on the regular communication line and the special control signal received on the protection communication line, and validates the correct control signal. This is a detour control signal parallel processing unit for outputting as ESWM (
a) to the output terminals XI and X, and the input terminal ZSI
and ZS2 are connected to output terminals X1 and X of ESWS(a). An example of this circuit connection diagram is shown in FIG.

Note that the DC power (P, N) is supplied from the remote control device (SSa).

RYZ (a) is a detour switch at the end in the X direction, and is connected to the output terminal of ESWZ (a) to L. The circuit configuration and operation of this are similar to those of RYX, and they operate simultaneously using the same special control signal.

ESWZ(e) is a detour control signal parallel processing unit provided at the end (SSe) in the X direction, and its circuit configuration and operation are the same as those of ESWZ(a).

However, the input circuits thereof are connected to the output terminals Yl and Y2 of ESWS(e) and ESWM(e), respectively.

RYZ (e) is a detour switch at the end in the X direction, and is connected to the output terminal of ESWZ (e). The circuit configuration and operation of this are similar to those of RYY, and they operate simultaneously using the same special control signal.

The above is an example of the circuit configuration of each part.Next, when the regular communication line is disconnected (in this case, the LAP
Assume that the wire is broken. ) The operation of each part will be explained.

In this case, since the detour will be configured by the backup connection line in the X direction, the control operation by "one detour control person" is performed from the control center. The operating method at this time and the operation of the special code transmitting circuit etc. in the control center are different from the conventional one.
The detailed explanation will be omitted as it is the same as "abnormal investigation", etc., but in this case, as shown in Table 2 above, the regular communication line has the first step and the second step, such as the long code of X (X). is Y
A special code of the code is sent.

When a special code is sent from the control center, in the first step, the A line (LAP, LAN) and the 8 line (LB
A positive voltage pulse is applied to each of P and LBN), and the receiving relays RAP and RBP operate, which causes the receiving auxiliary relays RAPX and RBPX to operate. When the receiving auxiliary relays RAPX and RBPX are activated, the condition shown in Fig. 2 (
Relays WMZ and WM operate as in a).

Here, WMZ is a general quick-acting, quick-release type relay, as indicated by the symbol, but WM is a quick-acting, slow-release type relay.

Next, when WM operates, relay WMX (fast-acting slow-release type)
operates, and opens the energizing circuit of the relay EM (quick-acting slow-release type) and energizes the relay EMX. Once this relay EMX operates, the self-holding circuit will
It remains activated and opens another energizing circuit of relay EM.

In addition, since the b contact of the receiving auxiliary relay is inserted into one of the energizing circuits of the EM, this circuit is also open while the X code is being received, so the length of that code is If the time is longer than the discharge time limit, the relay EM will fall.

Therefore, the fact that EM has fallen means that the code of the first step was the long code of X.

When relay EM falls (first step), relay ES (
(fast-acting, quick-release type) operates and maintains itself.

A contact of a relay WM (quick release type) is inserted into this self-holding circuit, so when this contact opens, the relay ES falls, but it falls when the -- connection is completed.

The slow release time of the relay WM is sufficiently longer than the time interval (this is called a space) between a series of codes.

When the code of the first step ends, the receiving relays RAP and RB
P falls and the receiving auxiliary relay RAPX.

RBPX falls.

When the reception auxiliary relays RAPX and RBPX fall, the energizing circuits of relays WMZ and WM are opened, so relay WMZ
Since relay WMZ is of a fast-acting, quick-release type, it falls immediately; however, since relay WM is a fast-acting, slow-release type, it will not fall unless the energizing circuit is opened for at least its slow-release time.

In this case, the time between the first step and the second step (
Hereinafter, this will be referred to as space. ), this space will not fall because the slow release time is longer.

On the other hand, since the relay WMZ falls, an energizing circuit for the relay ES (quick-acting, quick-release type) is configured, so the relay ES operates and maintains itself.

Therefore, the fact that the relay BS has operated means that the first step of the special code has been completed.

If the code of the second step of the special code is received in this state, the code will be determined by the circuit shown in FIG. 2(b).

For example, when the code of the second step of the special code is the Y code, the receiving relay operates only RAP, and therefore the receiving auxiliary relay also operates only RAPX.

Therefore, relays ESLI, ESL2. ESL3 and E
Of the SL4, only the ESL1 operates, and this means that it has received the "detour control for one person" control command shown in Table 2.

If the relay ESL 1 operates, its contacts will send a positive voltage signal to the output X1 of the circuit.

When the second step of the special code ends, the receiving relay R
AP, RBP reception auxiliary relay RAPX.

As RBPX falls, WMZ falls.

In addition, the slow release type relays WM and WMX also fall one after another, the relay EM operates, and the relay ES falls, returning to the normal state.

Therefore, in ESWX(c) of FIG. 2(b), the relay ESL1 operates and a positive voltage is applied to the output terminal X, Xt.
A negative pulse voltage (hereinafter referred to as positive pulse voltage, and a pulse voltage in the opposite direction as negative pulse voltage) is output to the magnetic retention relay r(
YX works.

(The motion in this case is called a positive direction motion, and the motion in the opposite direction is called a negative direction motion.) In this case, in EswM(a) shown in Fig. 1, a special code is used because the connection line LAP is broken. Not detected.

Moreover, in EsWM(e) in FIG. 1, Eswx(
A special code is detected in the same way as in c), but its output (Xt,
XZ) is not used.

When the relay RYX operates in the forward direction, as shown in Fig. 5, the end of the backup communication line in the X direction on the control center side is connected to the regular communication line, and its status display signals (contact signals) Ilx, Izx are output.
is sent to the remote control device. Upon receiving this status display signal, the control center recognizes the operation of the relay RYX, and subsequently performs a control operation by a "detour controller" to connect the end of the backup connection line in the X direction with the regular connection line. I do.

As a result, a special code with X in the first step and Y in the second step is again sent to the regular communication line and the backup communication line in the X direction, but at this time as well, the output terminals X+ and A positive direction voltage pulse is output to Xt,
The magnetic holding relay RYX continues to operate in the positive direction and does not change. Also, in ESWM(e), a positive direction voltage pulse is again applied to the output terminals XI and X2, but this is not used.

At this time, the special code is also sent to the backup connection line in the X direction, so the special code is detected by ESW(a) and ESWS(a), and the relay in EsWs(a) in FIG. ESLI operates and its output terminals
A positive direction voltage pulse is output to 2.

At this time as well, since the communication line is disconnected in SSa, the special code sent from the control center CC cannot be detected.

Next, since the detour control signal parallel processing unit ESWZ(a) is connected to the output terminals XI and X2 of ESWS(a), the relay swps shown in FIG. A negative pulse voltage (this is referred to as a positive direction pulse voltage) is output to the voltage L. When a positive direction pulse voltage is output to this output terminal, the magnetic holding relay RYZ(a) of the detour opening/closing section connected thereto operates. (The operation in this case is called forward direction operation.) When the magnetic holding relay RYZ(a) operates in the forward direction, it connects the terminal of the backup connection line in the X direction and the terminal of the regular connection line, as shown in Figure 1. A detour is constructed, and the status display signal (contact signal) I12 is sent to the remote control device SSa. This status display shall be communicated to the control center using the remote control device in the same manner as the status display of general equipment.

The above is the detour control method and the operation of each part when the regular communication line in the X direction is disconnected, but the same applies to the case in the X direction.

Also, when the disconnected connection line is restored to normal, the detour will be controlled to be disconnected (detour control l-off).
The operation of each part is based on the case of one person controlling the detour.

However, the output of each special code detection section becomes a negative direction pulse voltage, and the magnetic holding relay operates in the negative direction.

In addition, when both the regular communication line and the backup communication line return to normal, the detour control signal parallel processing unit ESWZ (a),
Input terminal ZMI of ESWZ (e).

2M2. Although voltage pulses will be applied to both ZSI and ZS2, it can be processed without any problem.

The above is an explanation of the configuration and operation of the device, mainly with reference to FIG.

Although the circuit of the control center equipment is not shown in Figure 1, the special code for detour control is the same as the special code for remote control (remote control abnormality, fall release, and all emergency stop 1-). The explanation is omitted because it is configured and sent.

The connections of each circuit are shown in Figures 2 (a), (b) and 3.
Although shown in the figure, FIG. 4 shows an operation transition diagram of these circuits.

The special code has the first step X, and its length is sufficiently long to make it distinguishable from the regular code. This means that it will not be detected as a special code, but if the received code changes to another code while the wire is disconnected (
For example, even if the X code changes to the X code or the R code, an error will not occur.

In addition, since these detour control circuits are constantly connected to the communication line, they receive pulse signals from general equipment control communication or (J, display communication), but since these are normal codes, There is no detour control as a result of this.

In addition, the control signal for disconnecting the backup connection line when the disconnection accident recovers will receive control signals from both the regular connection line and the backup connection line, but will now be processed in the detour control signal parallel processing unit. ing.

H1 Effects of the Invention As described above, according to the present invention, by improving some of the circuits of the current remote control device and adding a simple circuit, it is possible to utilize the backup communication line used for the detour and the regular communication line. detour control can be performed.

Therefore, unlike the conventional system, there is no need to provide an additional communication line for detour control, and there is no need to provide complicated equipment, so it can be carried out extremely economically.

In addition, in the embodiment, the sending of a special code for detour control is as follows:
Although it has been explained that the special code circuit of the remote control device for the control center is used, it is also possible to construct the special code transmission circuit for detour control independently and connect it in the middle of the communication line (for example, near the SSC in Fig. 1). It is also possible to do so.

Therefore, according to this method, it is possible not only to control the detour of the contact line, but also to transmit information different from the information of the remote control device, and it can be widely applied.

[Brief explanation of the drawing]

Fig. 1 is a configuration diagram showing an embodiment of the present invention, Fig. 2(a)
is a circuit connection diagram showing an example of the special code monitoring section, and FIG.
) is a circuit connection diagram showing an example of the special code detection section, Fig. 3 is a circuit connection diagram of the detour control signal parallel processing section, Fig. 4 is an operation transition diagram when receiving a special code, and Fig. 5 is a conventional circuit connection diagram. FIG. 6 is a conceptual diagram of the communication line bypass device, FIG. 6 is a transmission/reception circuit connection diagram, FIG. 7 is a waveform diagram of the ordinary code, and FIG. 8 is a waveform diagram of the special code (abnormality investigation). ESW...Special code monitoring unit, ESWS, ESWX. ESWM...Special code detection unit, ESWZ...Detour control signal parallel processing unit, RYX, RYY, Ryz...
Detour opening/closing section, LAP, LAN, LBP, LBH...
Regular contact line, LAPx, LANx, LBPx, LBNx
, LAPy, LANy, LBPy, LBNy... Reserve contact line. 2 people outside

Claims (1)

[Claims] (1) Control center equipment of remote monitoring and control equipment that centrally controls multiple substations, etc. and multiple controlled station equipment connected in parallel, and a set of regular communication lines with the same number of wires. It is equipped with a backup communication line, and when the regular communication line is disconnected, it connects the control center side terminal of the regular communication line and the control center side terminal of the backup communication line, and connects the terminal of the regular communication line and the backup communication line. In a system that enables monitoring and control by connecting terminals of Communication line detour control characterized by connecting a device that communicates information using a special code that can be distinguished from a code to a regular communication line and a backup communication line, thereby controlling connection and disconnection of both communication lines. method.