JPH0213235A - Controller/monitor for distribution machinery - Google Patents

Abstract

PURPOSE:To enable control without requiring a central controller/monitor or full knowledge of operational sequence and prohibition items by producing a control command from each terminal controller/monitor and transmitting the control command to another terminal controller/monitor thereby filling the role of a central controller/monitor. CONSTITUTION:A remote/local setting section 3p in a terminal controller/ monitor 3A provides a locally set enable signal to a local operation input section 3q in order to enable the operation and provides a nullifying signal to a coding/ decoding section 3b in order to nullify the operation. Consequently, the terminal controller/monitor 3A does not execute the operation for an 'ON command' transmitted from a terminal controller/monitor 30 when it is set locally. The terminal controller/monitor 3A executes the operation for a 'local operation ON command' provided to the local operation input section 3q. The 'local operation ON command' is substantially identical to the 'ON command'.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention is applicable to protection devices such as earth leakage circuit breakers and no-fuse circuit breakers, control devices such as electromagnetic switches and remote control devices, transducers, watt-hour meters, etc. The present invention relates to a power distribution equipment control and monitoring device that can easily configure a power distribution equipment control and monitoring system in which individual control and monitoring information of a wide variety of power distribution equipment, such as instrumentation equipment, is networked.

In particular, the present invention relates to a power distribution equipment control and monitoring device that eliminates the need for a central control and monitoring device.

[Conventional technology] The configuration of a conventional example will be explained with reference to FIG. 14.

FIG. 14 is a block diagram showing a conventional power distribution equipment control and monitoring device disclosed in, for example, Japanese Patent Publication No. 59-29998.

In Fig. 14, (1) is a central control and monitoring device, (2)
are the two signal transmission lines connected to this central control and monitoring device (1), and (3,), ..., (3n) are terminal control and monitoring devices connected to the signal transmission line (2), respectively. be.

Also, (5) is a commercial power source, and (6) is this commercial power source (5)
Two power lines connected to, (71a), (Lb),
..., (7na), (70b) are control contacts connected to one power line (6), (4,a), (4,b), respectively.
), ..., (4na), (4nb) each have one input terminal connected to the other power supply line (6), and the other input terminal connected to the control contacts (7+a) to (7nb). It's a load.

Next, the operation of the conventional example described above will be explained in FIGS. 15(a) and 15(b).
) and (c). Figure 15(a)
-(c) are time charts showing signal waveforms of various parts in the conventional example.

In FIG. 15, (a) shows a transmission signal, Pl is a start pulse indicating the start of transmission, and P2 is a terminal control and monitoring device (
A terminal address pulse P indicating the addresses of 31) to (3n) is a control pulse indicating control of the terminal control and monitoring devices (31) to (3n). (b) is the address match signal, (
c) shows a latch signal.

First, when operating the loads (4, a) to (4nb) by rONJing the control contacts (7, a) to (7nb), the central control monitoring device (1) connects the control contacts (7, a) to (7nb) via the signal transmission line (2) A transmission signal as shown in FIG. 15(a) is sent to the terminal control and monitoring devices (31) to (3n).

Terminal control monitoring device! (3,) to (3n) compare the terminal address in the transmission signal with its own terminal address, and when the two match, generate an address match signal as shown in FIG. 15(b).

At the same time, a latch signal as shown in FIG.
, a) to (4nb) are operated.

In this way, the central control and monitoring device (1) performs control operations based on control commands, and the terminal control and monitoring devices (3,) to (3)
n), one of the power distribution devices, the control contact (7+a
) to ()nb) are turned on.

The central control monitoring device (1) also includes terminal control monitoring devices (3,) to (3n) that perform monitoring operations based on monitoring commands.
Power distribution equipment (not shown) can be monitored via the .

[Problems to be Solved by the Invention] The conventional power distribution equipment control and monitoring device as described above has the following problems.

(a) Even when building a small system, a central control and monitoring device was required, making the system as a whole expensive and requiring a large amount of installation space.

(b) When preparing control and monitoring procedures for the central control and monitoring equipment, it was necessary to thoroughly understand the vast and complicated operating procedures and prohibitions regarding the operation of all connected power distribution equipment.

(1) Since the minimum unit of control and monitoring consists of contact inputs, relay contact outputs, etc., the central control and monitoring device controls and monitors each networked power distribution device using an algorithm that follows its own monitoring procedure. It is necessary to output commands, and therefore the number of control/monitoring procedures within the central control and monitoring device becomes enormous. This increases the processing time to complete one control/monitoring command, making the use of signal transmission lines extremely inefficient. It was bad.

(1) It was not possible to remove the connected power distribution equipment from the network of the equipment control and monitoring system and operate it independently.

This invention was made to solve the above-mentioned problems, and it eliminates the need for a central control and monitoring device, eliminates the need for familiarity with operating procedures and prohibitions for controlling and monitoring various power distribution equipment, and is simple and simple. The objective is to obtain a power distribution equipment control and monitoring device that can perform faster control and monitoring.

A further object of the present invention is to obtain a power distribution equipment control and monitoring device that can disconnect connected power distribution equipment from the network of the power distribution equipment control and monitoring system and operate it independently.

[Means for Solving the Problems] A power distribution equipment control and monitoring device according to the present invention has the configuration described below.

(1) A first terminal control and monitoring device having the following configuration.

As a transmission system, (i) an input unit that detects the operating state of connected power distribution equipment and generates a detection signal;

(ii> A monitoring information generation unit that generates monitoring information or a response command based on the detection signal.

(iii> A control command generation unit that generates a control command based on the monitoring information.

(iv) a code generation unit that converts the code of the control command or response command;

(V) A transmitter that transmits a transmission signal including the code-converted control command or response command.

As a receiving system, (via, a receiving unit that receives the transmission signal.

(vii) a code decoding unit that decodes the transmitted signal as the code of the control command or response command;

(vii) A control signal generation unit that generates a control signal indicating an operation procedure for operating the power distribution equipment based on the control command or response command.

(ix>, a drive output unit that outputs a drive signal for driving the power distribution equipment based on the control signal;

(X) A remote/local setting section that can disable the operation of the code decoding section when set locally.

(■), a second terminal control and monitoring device having the same configuration as the first terminal control and monitoring device;

Further, the power distribution equipment control and monitoring device according to the present invention has the configuration described below.

(I) A first terminal control and monitoring device having the following configuration.

As a transmission system, (i) an input unit that detects the operating state of connected power distribution equipment and generates a detection signal;

(]ii) A monitoring information generation unit that generates monitoring information or a response command based on the detection signal.

(iii) A control command generation unit that generates a control command based on the monitoring information.

(iv>, a code generation unit that converts the code of the control command or response command;

(V) A transmitter that transmits a transmission signal including the code-converted control command or response command.

As a receiving system, (vi) a receiving unit that receives the transmission signal;

(vii) a code decoding unit that decodes the transmitted signal as the code of the control command or response command;

<i) A local operation input unit that allows a local operation command to be directly input.

(ix>, a control signal generation unit that generates a control signal indicating an operation procedure for operating the device based on the control command, response command, or local operation command;

(X) A drive output unit that outputs a drive signal for driving the power distribution equipment based on the control signal.

<■), a second terminal control and monitoring device having the same configuration as the first terminal control and monitoring device.

[Operation] In the present invention, each terminal control and monitoring device generates control commands, etc. by itself based on information such as state changes including abnormalities of its own station, and transmits control commands to predetermined other terminal control and monitoring devices. Until a response command is returned (or until the command is completed), the local station functions as a central control and monitoring device.

In addition, when each terminal control and monitoring device receives a control command etc. from a predetermined other terminal control and monitoring device, it considers the other terminal control and monitoring device on the transmitting side to be the central control and monitoring bag, and its own station It serves as a terminal control and monitoring device.

[Example] The configuration of the embodiment will be explained with reference to FIG.

FIG. 1 is a block diagram showing an embodiment of the present invention, and (2) is completely the same as that of the conventional device described above.

In FIG. 1, 30) is a first terminal control and monitoring device, and in this embodiment, (30a), (30b), (3
0c), (30d), (30e), (30F), (
3011), (30h), (30i), (30j),
(30k), (301), (30m), (30n), (
30p) and (30q).

Further, (3^) is a second terminal control and monitoring device, and in this embodiment, (3a), (3b), (3C), and (3d)
, (3e), (3f), (3g), (3h), (31)
, (3j), (3k), (31), (3ya), (3n)
, (3p) and (3q).

(30a) is a transmitting unit and a receiving unit, (30h) is a control command generating unit and a monitoring command generating unit, and in this embodiment, (30a) is a transmitting/receiving unit connected to the signal transmission line (2). , (30b) is a code decoding unit connected to this transmitting/receiving unit (30a), and (30c) is this code decoding unit (30b).
The control signal generation section (30d) connected to the control signal generation section (30e) is the drive output section (30e) connected to the control signal generation section (30e).
) is an input section connected to this drive output section (30d), (
3or) is a code decoding unit (30b) and an input unit (30e)
The monitoring information generating unit (30g) connected to the monitoring information generating unit <3Of) is the reporting command generating unit (3Of) connected to the monitoring information generating unit <3Of).
0h) is the control/control unit connected to the monitoring information generation unit (30f>).
The input side of the monitoring command generation unit (30i) is connected to the monitoring information generation unit (30f), the notification command generation unit (30g), and the control/monitoring command generation unit (30h), and the output side is connected to the transmission/reception unit (30a). (30j) is a self-address setting unit connected to the transmitting/receiving unit (30a),
(30k) is the destination address setting unit connected to the transmitting/receiving unit (30m>), and (30+> is the control signal generation unit (30c)
and the device ID connected to the monitoring information generation unit (304),
NO0 setting section, (30m) is control signal generation section (30c)
and an information processing section connected to the monitoring information generation section (30f), (30n) a display section connected to this information processing section <30m), and (30p) a remote control 1 connected to the code decoding section (30b). - /Local setting section (30q) is a local operation input section whose input side is connected to the remote/local setting section (30p) and whose output side is connected to the control signal generation section (30e). In addition, the control signal generation section (30c)
is also connected to the monitoring information generation section (3Of>).

The terminal control monitoring device (3^) has the same configuration as the terminal control monitoring bag ff (30) described above, and each symbol (3a) to
(3q) corresponds to each code (30a) to (30Q). Note that the drive output section (30d) is connected to the output terminal (30d
, ), (30d,), (30da) and (30d,), and the input section (30e) has input terminals (30e+) and (
30e2), and a local operation input section (30q)
has input terminals (30q + ) and (30Q2). In addition, the drive output section (3d) is an output terminal (3dl)
and (3dt), and the input section (3e) has an input terminal (3dt).
e+), (3ez), and (3es), and the local operation input section (30q) has input terminals (30q l) and (30q 2).

Next, the configuration of the power distribution equipment will be explained with reference to FIGS. 2 and 3. FIG. 2 is a block diagram showing power distribution equipment connected to an embodiment of the present invention, FIG. 3 is a circuit diagram showing a part of FIG. It is exactly the same as the one.

In Figure 2, (40) is the terminal control and monitoring device (30)
It is an electrical mechanical device for control and monitoring connected to the terminal control and monitoring device (30) output terminals (30cll>, (30
0 connected to d2), (30d3) and (30d,) and input terminals (:1lOe +) and (30e2)
Equipped with N10FF indicator light (40a), overcurrent/short circuit trip indicator light (40b), earth leakage trip indicator light (40c), abnormality indicator light (40d), ON operation switch (40e), and OFF operation switch (40F). It is being

(4^) is the load, (7Δ) is the commercial power supply (5) and the load (4
It is an earth leakage breaker connected between the power line (6
) connected to the commercial power supply (5) via the power terminal (7a
), load terminal (7c) connected to load (4^) via power line (6), power terminal (7a) and load terminal (7C)
The main circuit (7g) connected between this main circuit <7g
〉The switchgear (7b) inserted in The connected earth leakage exception device (7f), the alarm contact AL provided in the overcurrent exception device (7d) and connected to the input terminal (3e +) of the terminal control monitoring device (3^), the earth leakage exception device Leakage Th1 provided in the device (7f) and connected to the input terminal (3e2) of the terminal control and monitoring device (3^)
A J signal contact EAL and an auxiliary contact AX are provided which are interlocked with the switching device (7b) and connected to the input terminal (3ez) of the terminal control and monitoring device (3^). .

(8> is an electrical operation fiE device coupled to the earth leakage breaker (7^) and connected to the terminal control and monitoring device (3^).

In FIG. 3, the electrical operation device (8) includes diode bridge circuits (8a) and (8c) including a surge absorption varistor, an ON operation coil (8b) connected to the diode bridge circuit (8a), and a diode OFF operation coil (8d) connected to the bridge circuit (8c), terminals (8e, ), (8ez), (8e-) and <8e+)
Operation connection terminal (8e), terminal (8ez) equipped with
diode bridge circuits (8a) and (8c) through
The operating power terminal (8h) connected to one end of the
ON operation switch (8r) and terminal (8e4) connected to the other end of the diode bridge circuit (8a) via
) and an OFF operation switch (8g) connected to the other end of the diode bridge circuit (8c), an ON operation switch (8'') and an OFF operation switch <81
? ) is provided with an operating power terminal (81) connected to the terminal. Note that the terminal (8e,) is grounded.

Furthermore, the configuration of the power distribution equipment control and monitoring system will be explained with reference to FIGS. 4 and 5. FIG. 4 is a schematic block diagram showing a power distribution equipment control and monitoring system in which one embodiment of this Kakumei is networked, and FIG. 5 is a schematic block diagram showing another power distribution equipment control and monitoring system.

In Figure 4, load (4^), (4^,),...
(4^n) are earth leakage breaker (7^) and power distribution equipment (
7A l), ... (7An), earth leakage circuit breaker (7^), control/monitoring electrical equipment (40), power distribution equipment (7^1), cap monitoring electricity 8! Equipment (401)
,...,..., power distribution equipment (7^n) and control/monitoring electrical equipment (40n) are terminal control and monitoring devices (3^), (30), (3^,), ( 301),...
..., (3^n) and (30n), and these terminal control and monitoring devices (3^) to (30n) are connected to each other by a signal transmission line (2). In addition, the load (4^
1), power distribution equipment (7^1), control and monitoring electrical equipment (40,), terminal control and monitoring equipment (3^1) and (30+
> is not shown.

In Figure 5, loads (4^,), (4^2),...
, (4^m) are power distribution equipment (7^l) and (7^2
), ..., (7^,), and these power distribution devices 7^1) to (7^m) are connected to terminal control and monitoring equipment (3
^1), (3^2), . ing.

Further, the appearance of the terminal control and monitoring device will be explained with reference to FIG. Figure 6 shows terminal control and monitoring equipment for earth leakage circuit breakers (
3B).

In Figure 6, (3d, ), (3d, ), <3d3)
and (3d,) are output terminals, (3e+), (3et),
(3q + ) and (3Q2) are input terminals, (3jkl
) is the self address, partner address, device ID, No., setting switch, (3n,) is the transmission status display LED, (3n
z) is ON10 F F-like bad display L E D , <3
n*) is the overcurrent/short circuit trip status display LED, (3n
, ) is the earth leakage trim state display LED, (3p) is the remote/local setting switch, and (3z) is the body.

Here, the structure of the transmission signal will be explained with reference to FIG. 7. FIG. 7 is a block diagram showing the frame structure of a transmission signal.

In FIG. 7, one frame of the transmission signal includes a self address SA, a partner address DA, a command word CW, a data count BC, data DT, and a frame check code F.
The device self-address SA consisting of CC is the address of the terminal control and monitoring device itself that is the sender, and the other party address DA is
Addresses, commands, and commands of other terminal control and monitoring devices to which to send
The word CW is, for example, a control command such as rON command J or rOFF command, or a monitoring command such as a monitoring command.
etc., type of command such as "report command" which is a reporting command, "response command" which is a response command, number of data BC
indicates the number of blocks of the next data DT, data DT is data accompanying the command word CW, and frame check code FCC indicates the consistency of the entire frame.

Next, the operation of the above-mentioned embodiment will be explained using typical control commands.
The monitoring command and reporting command will be explained in order.

When starting up the system or when operating the system as necessary,
The terminal control and monitoring devices (30> and (3^) have self-address setting sections <30j) and (3j), other party address setting sections (30k> and (3k), and device ID, No., setting sections (301) and ( 3I), the self address, the other party's address, the device ID, 'NO, (equipment identification number) are set.0 For example, the terminal control and monitoring device (3^) sets the appropriate address of the own station and the other party's address as the self address. as the address of terminal control monitoring bag W (30) and machine x:ro
, No, earth leakage interrupter It7r device connected together〈7＾
)'s ll! The device ID, NO, is set.

First, the control to turn on the earth leakage breaker (7^), that is, the operation of the control command will be explained.

First, the operation of transmitting the rON command J and the operation of receiving the "response command" on the terminal control and monitoring device (30) side will be explained with reference to FIG. FIG. 8 is a schematic operational flowchart showing the flow of operations of the "ON command" and the "response command".

In step (50), the terminal control monitoring device (30)
starts working.

In step (51), the terminal control monitoring device (30)
generates the rON command J and sends the terminal control and monitoring device (
Send to 3^).

That is, the input section (30e) has an input terminal (30e I
), the control/monitoring electrical equipment (40) is turned on.
It detects rONJ operation of the operation switch (40e), generates a detection signal, and outputs it to the monitoring information generation section <3Of).

The monitoring information generation unit (30f> generates “O” based on the detection signal
A command word CW representing "N command" is generated and passed to the control/monitoring command generation section (30h).

The control/monitoring command generation unit (30h) generates accompanying data DT and the number of data B based on the command word CW.
C is generated and passed along with the command word CW to the code generator (30i).

The code generation unit (30i) converts the code of the command word CW, the number of data BC and the data DT, and sends the code to the transmission/reception unit (30i).
Pass it to 0a).

The transmitting/receiving unit (30a) has a self-address setting unit (30j
) and the terminal control and monitoring device (3^) set in the remote address setting section (30k).
) and a frame check code FCC are added to form a transmission signal frame. Then, the transmission signal is placed on the signal transmission line (2).

Further, the monitoring information generation section (30f) passes information based on the above-mentioned detection signal to the information processing section (30m), and causes the information processing section (30m) to operate.

The information processing section (30m) drives the display section (30n) based on the above-mentioned information, etc., and displays the terminal control monitoring bag 17 (3).
0) Electrical mechanical equipment for controlling and monitoring the operating status (40)
The dynamic pressure, etc. is displayed using, for example, an LED.

In step (52), terminal control monitoring bag W (30
) receives a "response command" from the terminal control and monitoring device (38).

That is, the transmitting/receiving section (30a) is connected to the signal transmission line (2)
Receives the above transmission signal and checks its frame check code F.
Check the CC and if it is normal, the (■ hand address D
It is determined whether A is the address of the own station set in the own address setting section (:1Oj). If the other party's address DA is the address of the local station, the command word CW, the number of data BC and the data DT are passed to the code decoder (30b).

The code decoding unit (<30b) determines whether the command word CW is a response command J. [In the case of response command j, the command word CW, the number of data BC, and the data DT are sent to the control signal generation unit (: lOc),
This control signal generation section (30c) is operated.

The control signal generation unit (30c) generates the control/monitoring electrical equipment (4) set in the device ID, NO, setting unit (301).
Based on the device identification number of 0), command word CW, data count BC, and data DT, a control signal indicating a response procedure for operating the control/monitoring electrical mechanical device (40) is generated, and the drive output unit (30d ) is output to 0. For example, if the earth leakage breaker (7^) is turned on normally, the control
ON/○FF indicator light (40) of monitoring electrical equipment (40)
a) Generate a response procedure to light up.

The drive output unit (30d) lights up the 0N10FF indicator light (40a) of the control/monitoring electric machine appliance (40) in response to the above-mentioned control signal via the output terminal (3Qd,).

Further, the control signal generation section (30c) passes the above-mentioned command word C field, etc. to the information processing section (30m), and operates this information processing section (30+).

The information processing section (30m) uses the above-mentioned command word C.
The display unit (30n) is driven based on the field, etc., and the operating status of the terminal control/monitoring device (30) is displayed using, for example, an LED.

In step (53), the terminal control monitoring bag! (30
)゛ ends the operation.

Next, the operation of receiving the "rON command" and the operation of transmitting the "response command" on the terminal control and monitoring device <3^) side will be explained.

In step (60), the terminal control monitoring device (3^)
starts working.

In step (61), the terminal control 8 monitoring device (3^
) is the terminal control supervisor ff (30
).

That is, the transmitter/receiver (3a) receives the transmission signal on the signal transmission line (2), and checks the frame check code FC.
C is checked, and if it is normal, it is determined whether the other party's address DA is the address of the own station set in the own address setting section (3j). If the other party's address DA is the address of the local station, the command word CW, data count BC and data DT are passed to the code decoder (3b).

The code decoder (3b) detects that the command word CW is “ON”.
command". In the case of "ON command", the command word CW, data count BC and data DT are passed to the record signal generation section (3c) to operate this control signal generation section (3c).

In step (62), the terminal control monitoring device (3^)
executes the rON command.

That is, the control signal generation unit (3c) generates the device ID.

Earth leakage breaker (7^) set in NO1 setting section (31)
equipment identification number, command word CW, data count BC
and data DT, the earth leakage breaker (7^) is set to “O”.
A control signal indicating a control procedure for "N" is generated and output to the drive output section (3d).

The drive output section (3d) is electrically operated by the control signal described above via the output terminal (3cl). I! <8) O
Close the N operation switch (8r).

In this way, when the ON operation switch (8'') closes, the ON operation coil (8b) is energized, and the opening/closing device!
7b) closes. In other words, the earth leakage breaker (7^) is rONJ
I will do it.

The control signal generation unit (3c) also includes the above-mentioned command/
The word C field etc. are passed to the information processing section (3m), and this information processing section (3m>) is operated.

The information processing section (3so) drives the display section (3n) based on the above-mentioned command/word C field, etc., and displays the operating status of the terminal control/monitoring device (3^), etc., using, for example, an LED.

In step (63), the terminal control monitoring device (3^)
generates a "response command" and sends it to the terminal control and monitoring device (
30).

That is, the monitoring information generation unit (3f) is the input unit (3e)
Based on the detection signal detected by , it is determined whether the earth leakage breaker (7^>) has normally rONJed. Also, based on the detection signal, a command word CW representing a "response command" is determined.
is generated, and the data DT and its data count BC, which are the discrimination results, are generated and passed to the code generation unit (31) together with the command word CW.

The code generation unit (3;) converts the command word CW, the number of data BC, and the data DT into codes, and sends the code to the transmission/reception unit (3a).
give it to

The transmitting/receiving unit (3a) sets the own address SA of the own station set in the own address setting unit (3j) and the address of the terminal control and monitoring device (30) set in the other party address setting unit (3k). Address DA and frame check code FCC are added to configure the frame of the transmission signal.

Then, the transmission signal is placed on the signal transmission line (2).

Further, the monitoring information generation section (3f) passes information based on the above-mentioned detection signal to the information processing section (3m), and causes the information processing section (3m) to operate.

The information processing unit (3) drives the display unit (3n) based on the above-mentioned information, etc., and displays the operating status of the terminal control monitoring bag "t(3^)" and the 0N1OFF status layer of the earth leakage circuit breaker (7^). , overcurrent/short circuit trip status, earth leakage trip status, etc., are displayed using, for example, an LED.

In step (64), the terminal control monitoring device t(3^
) ends the operation.

Here, a control procedure for turning on the earth leakage breaker (7^) described above will be explained with reference to FIG. 9. No. 9 [E.J.
is a flowchart showing a control procedure to turn on the earth leakage breaker (7^).

In step (70), if the command word CW is "rON command", the control signal generating section (3c) is started to operate by the code decoding section (3b) and proceeds to the next step (71).

In step 71), the control signal generation section (3c) generates a signal based on the open/closed state of the alarm contact AL of the earth leakage breaker (7^) detected via the input section (3e) and the monitoring information generation section (3f). Electric leakage 3I due to overcurrent, short circuit or earth leakage
! Determine whether the disconnector (7^) has tripped. If there is no l-rip (NO), proceed to the next step (72). Also, if it is tripped (YE
S) proceeds to step (75).

In step (72), the control signal generation section (3c) outputs the ON operation switch (8f) of the electric operation bag ff (8) via the drive output section (3d) when the electric operation bag ff (8) is closed for a predetermined period of time. ).

In step (73>), the control signal generation unit (3c) is configured based on the open/closed state of the auxiliary contact AX of the earth leakage breaker (7^) detected via the input unit (3e) and the monitoring information generation unit (3f). Then, determine whether the earth leakage breaker (7^) is on.If it is on (YE
S) advances to the next Stella 7 (74), and also "○N
If not (NO), proceed to step (77).

In step (74), the control signal generation section (3c) ends its operation.

In step (75), the control signal generation unit (3c) generates the leakage 1! In order to release the tripped state of the circuit breaker (7^), the llt signal contact AL is reset (OFF) and the process proceeds to the fifth step (76).

In Stella 7 (76), the control signal generation unit (3c) determines whether the alarm contact AL of the earth leakage breaker (78) has been reset. If it has been reset (YES
) returns to step (72). If the reset has not been performed (NO), the process proceeds to the next step (77).

In step <77), error processing such as overcurrent and short circuit trip is performed, and the process returns to step (74).

Second, the control to turn off the earth leakage circuit breaker <7^), that is, the operation of the pond control command will be explained. In addition, rO
Since this corresponds to the operation of "N command", a detailed explanation will be omitted.

The terminal control and monitoring device W (:1lO) is a switch (4) for turning off the electrical equipment (40) for control and monitoring.
When 0f> is pressed, a ro PF command is generated and sent to the terminal control and monitoring device (3^).

On the other hand, the one-terminal control and monitoring device (3^) receives and executes the rOFF command.

That is, the control signal generation unit (3c) determines the device ID No.
Based on the device identification number of the earth leakage breaker (7^) set in the setting section (31), the command word CW, the number of data BC and the data DT, the earth leakage breaker (7A) is turned OFF,
The drive output section (
3d).

The drive output section (3d) outputs the output via the output terminal (3d2).
The OFF cow operation switch (8g) of the electric operation device (8) is turned off by the above-mentioned control signal.

In this way, when the OFF operation switch (8g) is closed, the OFF operation coil (8d) is excited, and the ;m closing device (7b) is opened, that is, the earth leakage breaker (7^) is
F” will be done.

Thereafter, the terminal control monitoring device (3^) generates a response command J and sends it to the terminal control monitoring bag! (30).

Then, the terminal control and monitoring device (30) receives the "response command" and ends its operation.

Here, a control procedure for turning off the earth leakage breaker (7^) described above will be explained with reference to FIG.

FIG. 10 is a flowchart showing a control procedure for turning off the earth leakage breaker (7^).

In step (80), if the command word CW is "rOFF command", the control signal generation unit (3C)
The code decoder (3b) starts the operation and proceeds to the next step (81).

In step (81), the control signal generation section (3C) changes the open/closed state of the alarm contact AL of the 'a power interrupter 7^) detected via the input section (3e) and the monitoring information generation section (3r). Based on the current leakage due to overcurrent, short circuit or earth leakage 3
I! Determine whether the disconnector (78) has tripped. If it is not tripped (NO), proceed to the next step (82); if it is tripped (YES)
) proceeds to step (85).

In step (82), the control signal generation unit (3C) controls the electrical operation device (8) via the drive output unit (3d>).
Fl? After opening the operation switch (88) for a predetermined period of time, the process proceeds to the next step (83).

In step (83), the control signal generation unit (3c) converts the leakage detected via the input unit (3e) and the monitoring information generation unit (3f) into the open/closed state of the auxiliary contact AX of the circuit breaker (7^). Based on this, the earth leakage breaker (7^) is ro F F J
determine whether it is. "○If FFJ is selected (YES), proceed to the next step (84). Also, r
o F F ”I.

If not (NO), proceed to step (87)/\\.

In step (84), the control signal generation section (3C) ends its operation.

In step (85), the control signal generation unit (3c) resets the alarm contact AL (○FF) to release the trip state of the earth leakage breaker (7^), and proceeds to the next step (86). move on.

In step (86), the control signal generation unit (3C) determines whether the alarm contact AL of the earth leakage breaker (78) has been reset. If it has been reset (YES
) returns to step (82). If the reset has not been performed (NO), the process proceeds to the next step (87).

In step (87), error processing such as overcurrent and short circuit trip is performed, and the process returns to step 84).

Third, the operation of monitoring the operating state of the earth leakage breaker (curse), that is, the operation of the monitoring command, will be explained. Note that detailed explanations of the same operations as those of the control commands will be omitted.

First, the terminal control monitoring bag! (30) The sending operation of the "monitoring command" and the receiving operation of the "response command J" of ffll will be explained with reference to FIG. 11. FIG. It is a schematic operation flowchart figure shown.

In step (90), the terminal control monitoring device 30)
The actions are synchronized.

In step 91), terminal control monitoring bag! (30
) generates a "monitoring command" using the same procedure as the "rON command" and transmits it to the terminal control and monitoring device (3^).

That is, the input section (30e) is connected to the control/monitoring electricity If
! t, tli The operation of a monitoring switch (not shown) of the tli instrument (40) is detected.

In step (92), the terminal control monitoring device (30)
A terminal control monitoring bag with "response commands"! (3^) and drives the control/monitoring electric mechanical device (40) based on the "response command".

In other words, a terminal control and monitoring device? f (30) is a cap I monitoring electromechanical device (40) based on the "response command".
Turn on or blink the 0N10FF indicator light (40a), overcurrent/short circuit trip indicator light (40b), earth leakage trip indicator light (40c), or abnormality indicator light (40d). for example,
If the earth leakage breaker (7^) responds that it is in an overcurrent/short circuit trip state, the control/monitoring electrical equipment (
40) blinks the overcurrent/short circuit trim indicator light (40b).

In step (93), the terminal control monitoring device (30)
ends the operation.

Next, the terminal control monitoring device (3^)ffI! The operation of receiving the "monitoring command" and the operation of transmitting the "response command" will be explained with reference to FIGS. 11 and 12. 1st
FIG. 2 is an explanatory diagram showing monitoring information of the earth leakage breaker (7A).

In step (100), the terminal control 3'll monitoring device (3^) starts operating.

In step (101), the terminal control and monitoring device (3^
) receives the [monitoring command] from the terminal control and monitoring device (30).

That is, the transmitter/receiver (3a) receives the transmission signal on the signal transmission line (2), and checks the frame check code FC.
C is checked, and if it is normal, it is determined whether the other party's address DA is the address of the own station set in the own address setting section (3j). If the other party's address DA is the address of the local station, the command word CW, data count BC and data DT are passed to the code decoder (3b).

The code decoder (3b) determines whether the command word CW is a "monitoring command". “In the case of the monitoring command 1, the command word CW, the number of data BC, and the data DT are passed to the monitoring information generation unit (3f), and the monitoring information generation unit (3f) is operated.

In step (102), the terminal control monitoring device (3^
) generates monitoring information.

That is, the monitoring information generation unit (3f)
The earth leakage breaker is detected via the input unit (3e) based on the equipment identification number, command word CW, data number BC, and data DT of the earth leakage breaker (78) set in the setting unit (31). Opening/closing data of the auxiliary contact AX, alarm contact AL, and earth leakage alarm contact EAL of (7^) are input, and based on these, seven types of monitoring information as shown in FIG. 12, for example, are generated.

In the normal operation mode, when the auxiliary contact AX, alarm contact AL, and earth leakage T1 alarm contact EAL are all "open,""the earth leakage interrupter IT device (7^) is in the OFF state,""closed,""open," and [
In the case of 17FIJ, "ONN punishment of the earth leakage breaker (7^),""Open","Closed" and "Open", "Overcurrent/short circuit trip operation status", "Open", "Closed 1 and "Silent" ”, the monitoring information of “earth leakage trip operation status 1” is generated.

In addition, as the abnormal operation mode, if the auxiliary contact AX, alarm contact AL, and earth leakage alarm contact EAL are "closed", "closed", and "open", "overcurrent/short circuit trip operation abnormality", "closed"
, "Open" (or "closed") and "closed" indicate "earth leakage trip operation abnormality", and when the opening/closing data of auxiliary contact AX, alarm contact AL, and earth leakage alarm contact EAL are combinations other than those listed above, "other Generates "abnormal" monitoring information.

In step (103), the terminal control monitoring device (3^
) generates a "response command" and sends it to the terminal control and monitoring device (30).

That is, the monitoring information generating section (3r) generates a command word CW representing a "response command", generates the data DT which is the above-mentioned monitoring information, and the number of data BC, and sends the same to the code generating section along with the command word CW. Give it to (31).

The code generation unit (31) converts the code of the command word CW, the number of data BC, and the data DT, and transmits and receives the code to the transmitting/receiving unit (3a).
give it to

The transmitting/receiving unit (3a) has its own address SA set in the own address setting unit (3j) and the address of the terminal control monitoring bag 2 (30>) set in the other party address setting unit (3k). A destination address DA and a frame check code FCC are added to form a transmission signal frame, and the transmission signal is placed on the signal transmission line (2).

In addition, the monitoring information generation unit (3f) passes the above-mentioned monitoring information etc. to the information processing unit (3rd generation), and this information processing unit (3rd generation)
make it work.

The information processing unit (3-resistant) drives the display unit (3n) based on the above-mentioned monitoring information, etc., and displays the operating status of the terminal control and monitoring device (3^), the 0N10FF status of the earth leakage breaker (7^), and the overcurrent.・Short circuit trip status, earth leakage trip status, etc. are displayed using, for example, an LED.

In step (104), the terminal control monitoring device (3^
) ends the operation.

Fourth, operations based on abnormalities and state changes of the earth leakage breaker (7^), that is, operations of notification commands, and operations of control commands and monitoring commands to the third terminal height 11011 monitoring device will be explained. Note that a detailed explanation of the operations that are the same as those of the "rON command" will be omitted.

First, the transmission operation of the "report command", "l'JI control command" and "monitoring command" on the terminal control and monitoring device (3^) side will be explained with reference to FIG. FIG. 13 is a schematic operational flowchart showing the flow of the "control command" and "monitoring command" based on the "report command 1" and the abnormality and status change of the earth leakage circuit breaker (7^).

In step (110), the terminal control and monitoring device (3^
) starts working.

In step (111), the terminal control monitoring device (3^
) inputs the opening/closing data of the earth leakage breaker (7^).

That is, the input unit (3e) has input terminals (3e, ), (
3e2) and (3e=), earth leakage breaker (7^)
Alarm contact AL, earth leakage alarm contact EAL and auxiliary contact AX
detects the open/close state of the switch, generates a detection signal (open/close data), and outputs it to the monitoring information generating section (3'').

In step (112), the terminal control and monitoring device (3^
) determines whether the operating state of the earth leakage breaker (7^) has changed. If the operating state has changed (YES), proceed to the next step (113); if the operating state has not changed (NO), proceed to the final step (11B).

That is, the monitoring information generation unit (3r) generates the alarm contact AL,
It is determined whether the r7FI idle data of the earth leakage alarm contact EAL and the auxiliary contact AX has changed.

In step (113), the terminal control and monitoring device (38) generates monitoring information based on the opening/closing data.

That is, the monitoring information generation unit (3f) generates the alarm contact AL,
iii. Based on the opening/closing data of the electric alarm contact EAL and the auxiliary contact AX, the monitoring information explained in step 1 of the "monitoring command" is generated.

Further, the monitoring information generation unit (3'') passes the above-mentioned monitoring information etc. to the information processing unit (3m), and the information processing unit (3m)
make it work.

The information processing unit (3rd floor) drives the display unit (3n) based on the above-mentioned monitoring information, etc., and operates the terminal control and monitoring device (3^).
operating status and earth leakage breaker (7^) ON10 F F
The status, overcurrent/short circuit trip layer, leakage trip status, etc. are displayed using, for example, an LED.

In step (114), the terminal-based m monitoring device (3^
) determines whether or not to report based on the monitoring information.0 If the notification is to be made (YES), the process proceeds to step (117).

Also, if you do not report (NO), the Hagi step (11)
Proceed to 5).

That is, the monitoring information generation unit (3f) determines whether to report based on the monitoring information.
S) is a command word CW representing "report command"
is generated and sent together with the monitoring information to the notification action generation unit (3g).
give it to

In step (115), the terminal control monitoring device (3^
) determines whether to issue a "control command" or a "monitoring command" based on the monitoring information. If the "control command" or "monitoring command" is issued (YES), proceed to step (118); if the "control command" or "monitoring command 1" is not issued (NO), proceed to the next final step (
Proceed to +16>.

That is, the monitoring information generation unit (3f) determines whether to issue a "control command" or a "monitoring command" based on the monitoring information. When issuing a "control command" or "monitoring command" (YES), a command word CW representing the "control command" or "monitoring command" is generated and sent to the control/monitoring command generation unit (3h) along with the monitoring information. hand over.

In step (116), the terminal control monitoring device (3^
) ends the operation.

In step (117), the terminal control monitoring device (3^
) generates a "report command" to control the terminal and monitor it!
Send to (30). Thereafter, the process proceeds to step (115).

That is, the 1 report command generation section (3g) generates the accompanying data DT and the number of data BC based on the monitoring information and the command word CW, and passes the generated data together with the command word CW to the code generation section (31).

The code generation unit (31) converts the code of the command word CW, the number of data BC and the data DT, and sends the code to the transmission/reception unit (3a).
give it to

The transmitting/receiving unit (3a) has its own address SA set in its own address setting unit (3'') and the address of the terminal control and monitoring device (30) set in its partner address setting unit (3k). A destination address DA and a frame check code FCC are added to form a transmission signal frame. Then, put the transmission signal on the signal transmission line (2),
Interrupts the terminal control and monitoring device (30).

In step (118), the terminal control monitoring device (3^
) generates a "control command J" or "monitoring command" and transmits it to the third terminal control and monitoring device. Thereafter, proceed to the final step (116).

That is, the control/monitoring command generation unit (3h) generates the accompanying data D based on the monitoring information and the command word cw.
Generate T and its data number BC, and send command word C
It is passed along with W to the code generation unit (31).

The code generation unit (31) converts the code of the command word cw, the number of data BC, and the data DT and passes it to the transmission/reception unit (3a).

The transmitting/receiving unit (3a) sets the own address SA of the own station set in the own address setting unit (3j), and the other party which is the address of the third terminal control and monitoring device set in the other party address setting unit (3k). Address DA and frame check code FCC are added to configure the frame of the transmission signal. Then, the transmission signal is placed on the signal transmission line (2).

Next, the operation of receiving the notification command J on the terminal control and monitoring device (3o) side will be explained with reference to FIG.

In step (120), the terminal control monitoring device (3o
) starts working.

In step (121), the terminal control monitoring device (3o
) determines whether a "report command" has been received from the terminal control/monitoring device (3^). If received (YES
) proceeds to the next step (122). If not received (NO), the process advances to step (124).

That is, the transmitting/receiving section (30a) receives the transmission signal on the signal transmission line (2) when there is an interrupt, checks the frame check code FCC, and if it is normal, the destination address DA is the self-transmission signal. It is determined whether the address of the own station is set in the address setting section (30j). When the other party's address DA is the own address, the command word cw, data IBC and data DT are sent to the code decoder (30
b).

The code decoder (30b) determines whether the command word cw is a "report command". In the case of "report command", pass the command word cw, data count BC and data DT to the monitoring information generation unit (30f) 4;
This monitoring information generation unit (30f) is operated.

In step (122), the terminal control monitoring device (30
) decodes the “report command” and executes the next step (1
Proceed to 23).

That is, the monitoring information generation unit (30f)
The word CW, data count BC and data DT are decoded.

In step (123), the terminal control monitoring bag ff (
30) performs processing based on the "report command" and proceeds to step (124>).

That is, the monitoring information generation unit (30r) generates a new "report command" and "r installation command" to the third terminal control and monitoring device, if necessary, based on the command word CW, data count BC, and data DT. Alternatively, a command word CW representing a "monitoring command" is generated and passed to the reporting command generation section (30g) or the control/monitoring command generation section (30h).

Notification command generation unit (30g) or control/monitoring command generation unit (
30h) generates accompanying data DT and data count BC based on the command word C field, etc., and passes them along with the command word CW to the code generator (30i).

The code generation unit (30i) converts the code of the command word CW, the number of data BC and the data DT, and sends the code to the transmission/reception unit (30i).
Pass it to 0a).

The transmitting/receiving unit (30a) has a self-address setting unit (30j
), the other party's address DA which is the address of the third terminal side W monitoring device set in the other party's address setting section (30k>), and the frame check code FCC are added to the transmission signal. A frame is constructed, and the transmission signal is placed on the signal transmission line (2).

Further, the monitoring information generation section (30f) passes the above-mentioned command word C field, etc. to the information processing section (30m), and causes the information processing section (30m) to operate.

The information processing section (3m) drives the display section 30) based on the above-mentioned command/word C field, etc., and displays the operation status 1 of the terminal control/monitoring device (30>) using the LED.

In step (124), the terminal control monitoring device (30
) ends the operation.

Fifth, the operation based on the hand operation of the earth leakage breaker (7^), that is, the operation of the local operation command will be explained. The terminal control and monitoring device (3^) side will be explained.
The explanation on the terminal control and monitoring device (30) side is also omitted because it is the same.

In the first case, when the remote/local setting unit (3p) of the terminal control and monitoring device 1f (3^) is set to remote, it sends an invalid signal to the local operation input unit (3q).
to disable that operation and send a permission signal to the decoder (
3b) to enable that operation.

In addition, when the remote/local setting unit (3p) is set to local, it sends a permission signal to the local operation input unit (3q) to permit the operation, and sends an invalid signal to the code decoding unit (3b). to disable that behavior.

Therefore, when the terminal control and monitoring device (3^) is set to be remote, it executes the first to fourth operations described above.

In addition, when the terminal control and monitoring device (3^) is set locally, it does not perform any operation in response to the rON command sent from the terminal control and monitoring device (30) to its own station. An operation is executed in response to a "local operation ON command" or the like inputted via the input terminals (3q+) and (3Q2) of the local operation input unit (3q). This "local operation ON command" is the same as the British rON command. The explanation of the operation after the control signal generation section (3c) is the same as that of the above-mentioned "rON command" and so will be omitted.

In the second case, the remote/local setting section (3p) of the terminal control monitoring bag Ti (3^) sends a permission signal to the local operation input section (3q) when set to remote I.
) and code decoder (3b) to permit the operation of both.

In addition, when the remote/local setting unit (311) is set to local, it sends a permission signal to the local operation input unit (3q) to permit the operation, and sends an invalidation signal to the code decoding unit (3b). Disable that behavior.

Therefore, when the terminal control monitoring device (3^) is set to remote, it executes the first to fourth operations described above, and also inputs the input terminals (3q+) and (3q) of the local operation input unit (3q). It also executes operations in response to "local operation ON commands" etc. input via 3Q2).

That is, the control signal generation unit (3c) executes the operation for both the "○N command" and the "local operation ON command".

In the third case, when the remote/local setting unit (3p) of the terminal control and monitoring device (3^) is set to remote, the remote/local setting unit (3p) sends a permission signal to the local operation input unit (3q) and code decoding unit (3b). , and allow both parties to operate.

In addition, when the remote/local setting section (3p) is set to 50-cal, the invalid signal is sent to the local operation input section (3p).
3q) and code decoding unit (3b) to invalidate the operations of both.

Therefore, when the terminal control and monitoring device (3^) is configured locally, the terminal control and monitoring device (3^) has the terminal control and monitoring bag 'I! It does not execute any operation in response to the "ON command" etc. sent from (30) to its own station, and does not execute the "ON command" etc. input via the input terminals (3q+) and (3q 2 ) of the local operation input section (3q).
In other words, the control signal generation unit (3c) does not perform any operation in response to either the "ON command" or the "local operation ON command."

Note that this invention does not need to be particular about the transmission method, and contact inputs, etc. corresponding to each control command, monitoring command, etc. may be transmitted to the terminal control and monitoring device of the other party, and a dedicated signal line or a power line may be used. This can be achieved by using a carrier or by a transmission system that applies various multiplex transmission techniques.

By the way, in the above embodiment, the number of addresses that can be set in the destination address setting section is one, but the same operation can be expected even if there are multiple addresses (2 to N). In this case, control commands, etc. can be sent to multiple terminal control and monitoring devices. can be sent.

Furthermore, in the above embodiment, the self-address setting section, the other party's address setting section, and the device ID, NO, setting section were provided separately, but as shown in Fig. 6, a single setting section provided with a changeover switch is used. You can expect similar behavior.

Further, in the above embodiment, an LED was provided as a display unit so that the operating status of the connected power distribution equipment etc. could be visually checked, but other display means may be used, and detailed information can be displayed by using a liquid crystal, for example. . That is, the set self address, partner address, and 8! The device identification number etc. can also be displayed.

Furthermore, in the above embodiments, a display section is provided as an information output means, but an audio output section may also be provided.

Furthermore, the remote/local setting section may send permission and disable signals to the control/monitoring command generation section, the reporting command generation section, etc., to permit and disable their operations.

Furthermore, the remote/local setting section and the local operation input section may each be provided independently.

[Effect of the invention] Since this invention is configured as explained above,
This produces the effects described below.

When constructing the system, there is no need for a central control and monitoring device, so the overall system is inexpensive and saves installation space.

In addition, regarding the operation of all connected power distribution equipment,
There is no need to be familiar with vast and complicated operating procedures and prohibitions.

Furthermore, since the minimum unit of control/monitoring is a macroscopic control command or monitoring command, the processing time required to complete one control/monitoring command is shortened, and the efficiency of use of signal transmission lines is greatly improved.

Furthermore, the connected power distribution equipment can be removed from the network of the power distribution equipment control and monitoring system and operated independently, making it possible to operate it at hand during maintenance and inspection, etc., and preventing incorrect control commands from other terminal control and monitoring devices. Because the network of the power distribution equipment control and monitoring system can be used as is, the number of outages can be kept to a minimum.

Furthermore, at the time of local setting of the terminal control and monitoring device, the local operation command can be a simple macroscopic signal because a predetermined control procedure of the control signal generation section can be used.

[Brief explanation of the drawing]

Fig. 1 is a block diagram showing an embodiment of the present invention, Fig. 2 is a block diagram showing power distribution equipment connected to an embodiment of the invention, and Fig. 3 is a circuit diagram showing a part of Fig. 2. , FIG. 4 is a schematic block diagram showing a networked power distribution equipment control and monitoring system according to an embodiment of the present invention, FIG. 5 is a schematic block diagram showing another power distribution equipment control and monitoring system, and FIG. 6 is a schematic block diagram showing a networked power distribution equipment control and monitoring system.
Terminal for circuit breaker, III (31) A perspective view showing the monitoring device;
The figure is a schematic operation flowchart showing the flow of the rON command and response command, Figure 9 is a flowchart showing the control procedure for turning on the earth leakage breaker, and Figure 10 is a flowchart showing the control procedure for turning on the earth leakage breaker. FIG. 11 is a flowchart showing the control procedure for rOFFJ, FIG. Figure 13 shows the "report command". 14 is a block diagram showing a conventional power distribution equipment control and monitoring device. Figure 15 (a) to (c)
) is a time chart diagram showing signal waveforms of various parts in a conventional example. In the figure, (3^, (30)... (3a, (30a... (3b), (30b... (3c), (30c... (3d), (30d)...(:( e)
, (30e ... (3f, (30f ... 311), (30g) ... 3h), (30h ... 3i), (30i ... 3j), (30j ... 3k), (30k... (31), (301... (3p), (30p... Terminal control and monitoring device, transmitting/receiving section, code decoding section, control signal generation section, drive output section, input section, monitoring information Generation unit, notification command generation unit, control/monitoring command generation unit, code generation unit, self address setting unit, other party address setting unit, device ID, NO, setting unit, remote/local setting unit, (3q), (30q) ...Local operation input unit, (7^) ...Earth leakage circuit breaker, (40) ...Electrical equipment for control and monitoring.The same reference numerals in each figure refer to the same or corresponding parts. 8 Figure 6 main storage 6 shores? Turtle ° j It, table, 1 (3A) Kamiki flying mouth mouth table (0) Island 10 Figure 7F) Figure 11 Pigeon descendants) Bell ν1 view setting (3A)

Claims (2)

[Claims] (1) An input unit that detects the operating state of connected power distribution equipment and generates a detection signal, a monitoring information generation unit that generates monitoring information or response commands based on the detection signal, and a control command based on the monitoring information. A transmission system includes a control command generation unit that generates a control command, a code generation unit that converts the code of the control command or response command, and a transmission unit that transmits a transmission signal including the code-converted control command or response command, and a receiving unit that receives a transmission signal; a code decoding unit that decodes the transmission signal to be the code of the control command or response command; a control signal that indicates an operation procedure for operating the power distribution equipment based on the control command or response command; a control signal generation section that generates a control signal, a drive output section that outputs a drive signal that drives the power distribution equipment based on the control signal, and a remote that can disable the operation of the code decoding section when set locally. / A first terminal control and monitoring device constituting a reception system from the local setting section, and a second terminal control and monitoring device having the same configuration as the first terminal control and monitoring device,
When the terminal control monitoring device or the second terminal control monitoring device transmits the control command, the second terminal control monitoring device or the first terminal control monitoring device transmits the response command. Power distribution equipment control and monitoring equipment. (2) An input unit that detects the operating state of connected power distribution equipment and generates a detection signal, a monitoring information generation unit that generates monitoring information or response commands based on the detection signal, and a control command based on the monitoring information. A transmission system includes a control command generation unit that generates a control command, a code generation unit that converts the code of the control command or response command, and a transmission unit that transmits a transmission signal including the code-converted control command or response command, and a receiving section that receives a transmission signal; a code decoding section that decodes the transmission signal as the code of the control command or response command; a local operation input section that can directly input a local operation command; the control command and the response command. or received from a control signal generation unit that generates a control signal indicating an operation procedure for operating the power distribution equipment based on a local operation command, and a drive output unit that outputs a drive signal that drives the power distribution equipment based on the control signal. A first terminal control and monitoring device constituting the system, and a second terminal control and monitoring device having the same configuration as the first terminal control and monitoring device, the first terminal control and monitoring device or the second terminal A power distribution equipment control and monitoring device characterized in that when the control and monitoring device transmits the control command, the second terminal control and monitoring device or the first terminal control and monitoring device transmits the response command.