JPH01321831A - Distribution machinery controller/monitor - Google Patents

Abstract

PURPOSE:To perform control and monitor easily and quickly by providing a control signal producing section or a monitor information producing section for producing control sequence or monitor information suitable for control or monitor of distribution machinery connected to a terminal controller/monitor constituting a part of a distribution machinery controller/monitor. CONSTITUTION:When a control program for turning an earth leakage breaker 7 ON based on a predetermined program is produced from a central controller/ monitor 1, an ON command is produced and fed as a control command to a terminal controller/monitor 30. The ON command is received at the transmitting/receiving section 3a in the terminal controller/monitor 30 and passed to a decoding section 3b. The decoding section 3b judges the ON command as a control command and operates a control signal producing section 3c. The control signal producing section 3c produces a control signal representing ON operation sequence optimal for a connected distribution machinery, i.e. an earth leakage breaker 7, then provides a control drive signal through a drive output section 3d and executing an ON command.

Description

Detailed Description of the Invention [Field of Industrial Application] This invention is applicable to protective equipment such as no-fuse circuit breakers and earth leakage circuit breakers, control equipment such as electromagnetic switches and remote control switches that control 0N10FF, or transducers. This invention relates to a power distribution equipment control and monitoring device that controls and monitors a wide range of power distribution equipment, including instrumentation equipment such as watt-hour meters, and in particular to a power distribution equipment control and monitoring device that has the function of detecting the status of power distribution equipment. .

C. Prior Art] This type of power distribution equipment control and monitoring device uses a microcomputer (not shown) as shown in the basic block diagram of FIG.
A central control and monitoring device (also called a parent device) 1 with a built-in device, and a terminal control and monitoring device (also called a parent device) that directly controls and monitors 9 power distribution devices 7 through contact output and contact input in order to control, protect, and monitor a large number of loads 4. (also called terminal devices) 3 are connected by a signal transmission line 2, and each terminal control and monitoring device 3 outputs the control signal transmitted from the central control and monitoring device 1, and the terminal control and monitoring device 3 is connected to the power distribution equipment 7. The most optimal configuration is to have a function of transmitting input signals to the central control and monitoring device 1.

FIG. 9 is a connection diagram showing a partial block diagram of the power distribution equipment control and monitoring device of FIG. 8 when an earth leakage breaker with an electric operating device is connected as the power distribution equipment. In FIG. 9, 1 is a central control and monitoring device, 2 is a signal transmission line for transmitting control and monitoring signals from this central control and monitoring device 1, and 3 is operated by control and monitoring signals received through this signal transmission line 2. Terminal control and monitoring device, 4 is a load to be controlled, 5 is a main circuit power supply, 6 is a distribution line for supplying power from this main circuit power supply 5 to the load 4, 7 is between the main circuit power supply 5 and the load 4 A power supply terminal 7a connected to the main circuit power supply 5, a load terminal 7c connected to the load 4, and a main circuit 7g connected to the power supply terminal 7a and the load terminal 7c, such as an earth leakage breaker. a switchgear 7b inserted into the switch, an overcurrent tripping device 7d connected to the main circuit 7g, a current transformer such as ZCT7e connected to the main circuit 7g, and an earth leakage tripping device 7f connected to the current transformer 7e. It is equipped with

Furthermore, 8 is an electric operating device engaged to open and close the switching device 7b of the earth leakage breaker 7 from the outside, AX is an auxiliary contact that outputs based on the operation of the switching device 7b, and AL is an overcurrent tripping device. an alarm contact that outputs based on the operation of 7d;
EAL is an earth leakage alarm contact that outputs based on the operation of the earth leakage tripping device 7f.

Next, in the power distribution equipment control and monitoring device shown in FIG.
The operation when ON-OFF control and status monitoring of the earth leakage breaker 7 is performed by the central control and monitoring device 1 will be described.

First, the operation when turning on the earth leakage breaker 7 will be explained according to the control procedure flowchart shown in FIG.

The central control monitoring device 1 transmits a control command of "ON signal output" to close the control output contact 3-1 to the terminal control monitoring device 3 (step 111), and the terminal control monitoring device receiving this command Step 3 outputs this control command as it is as "ON drive output" (Step 1
12) In this way, the control output contact 3-1 is operated to close, and after the operation is completed, the central control monitoring device W1
(Step 113).

Next, the central control and monitoring device 1 controls the r of the terminal control and monitoring device 3.
In order to know whether the earth leakage breaker 7 has operated normally by "ON drive output", a monitoring command to ``call monitoring data'' is sent to the terminal control monitoring device 3 to read the monitoring data from the earth leakage breaker 7. (Step 114), the terminal control monitoring device 3 that received this sends the monitoring data regarding the monitoring force 3-3.3-4.3-5 in FIG. 9, that is, the alarm contact AL, the earth leakage alarm contact EAL, and the auxiliary contact Read (step 115m) Return to central control and monitoring device 1 (step 116).

Next, the central control monitoring device 1 checks in step 117 whether the earth leakage circuit breaker 7 is operating normally on the basis of the returned monitoring data, and selects the input signal of the auxiliary contact AX from among the monitoring data. check), normally O
If it is operating, the terminal control and monitoring device 3 transmits an rON signal release output to stop the rON drive output of the control output contact 3-1 (step 118). step 119), and after completing the stopping operation, responds to the central control and monitoring device 1 to that effect.
(Step 120), the central control monitoring device 1 confirms the above-mentioned response and completes the ON operation of the earth leakage breaker 7.

In the above-described operation, if the earth leakage breaker 7 is not turned ON normally, the central control monitoring device 1 proceeds from step 117 to step 121, performs error processing according to a predetermined procedure, and then returns to step 121. 111 to cancel the "○N signal output" (step 118) to the terminal control and monitoring device 3, and the terminal control and monitoring device 3 stops the "ON drive output" (step 112). After completing the stop operation, the controller 1 responds to the central control and monitoring device 1 to that effect in step 120), and ends the operation.

As described above, in the conventional power distribution equipment control and monitoring device, specifically, the central control and monitoring device 1 transmits the control procedure necessary for the control to the terminal control and monitoring device 3, and controls the power distribution equipment such as the earth leakage circuit breaker 7. Direct control was required via the terminal control and monitoring device 3, and the entire control procedure had to be prepared and stored in the central control and monitoring device 1.

[Problems to be Solved by the Invention] As mentioned above, in conventional power distribution equipment control and monitoring devices that combine a wide variety of distributors into one network, the minimum unit of control and monitoring consists of output relay contacts and contact inputs. Therefore, it is necessary for the central control and monitoring device to output control and monitoring commands using an algorithm that follows the control and monitoring procedures unique to each power distribution device connected to the network, and the control and monitoring procedures within the central control and monitoring device become enormous. The processing time required to complete one control and monitoring command also becomes long, and the efficiency of using the transmission path becomes extremely poor.

In addition, when preparing control and monitoring procedures for central control and monitoring equipment,
It is necessary to thoroughly understand the procedures and prohibitions regarding the operation of all connected power distribution equipment, and the number of algorithms that must be prepared becomes enormous and complicated.

Furthermore, there were many other problems, such as the inability of the central control and monitoring device to directly determine the normal state or abnormal state of the power distribution equipment.

This invention was made in order to solve many of these problems, and it is possible to easily apply control and monitoring programs to power distribution equipment without having to be familiar with the operating procedures and prohibitions for controlling and monitoring various power distribution equipment. To provide a power distribution equipment control and monitoring device that can directly grasp the status of power distribution equipment with a central control and monitoring device without the trouble of preparing each time, and can perform simpler and faster control and monitoring.

[Means for Solving the Problems] A power distribution equipment control and monitoring device according to the present invention includes a receiving unit that receives a signal including a command transmitted from a central control monitoring device through a signal transmission line, and a receiving unit that receives a signal including a command from the received signal. a code decoding unit that decodes whether it is a control command or a monitoring command; and a control signal generation unit that is operated by the decoded control command and generates a control signal indicating an optimal control procedure for the control method of the corresponding power distribution equipment. , a drive output unit that outputs a control drive signal for driving the power distribution equipment based on the generated control signal; an input unit that receives monitoring data necessary for monitoring the power distribution equipment from the power distribution equipment; a monitoring information generation unit that is operated and generates monitoring information representing normal operation and abnormal operation of the power distribution equipment based on the monitoring data; a code generation unit that performs encoding necessary for transmission from the generated monitoring information; and a transmitter for transmitting a signal containing the monitored information to the central control and monitoring device.

[Operation] In the present invention, each terminal control and monitoring device receives macroscopic control commands or monitoring commands transmitted from the central control and monitoring device at the transmitting/receiving section, decodes them at the code decoding section, and interprets them in the case of control commands. operates the control signal generation unit according to the control command, outputs from the drive output unit a control drive signal that is optimal for the power distribution equipment connected to the terminal control and monitoring device, and operates the power distribution equipment. In addition, monitoring data obtained from power distribution equipment connected to the terminal control monitoring device is input to the input unit, and in the case of a monitoring command, the monitoring information generation unit is operated according to the monitoring command, and the power distribution is performed based on the monitoring data. Monitoring information representing normal and abnormal operation of the equipment is generated, the generated monitoring information is encoded, and then sent back to the central control monitoring device via the transmitting/receiving section.

[Embodiment] FIG. 1 is a detailed block diagram showing an embodiment of the present invention together with the earth leakage breaker shown in FIG. 9. In Figure 1, 30
is a terminal control and monitoring device that receives control and monitoring commands from the central control and monitoring device 1 and executes specific control and monitoring operations of the earth leakage circuit breaker 7 as a connected power distribution device; A transmitting/receiving unit 3a that receives a transmitted signal containing a control command or a monitoring command, a code decoding unit 3b that decodes whether the received control command or monitoring command is a control command or a monitoring command, and is operated by the decoded control command, A control signal generation unit 3c that generates a control signal indicating an optimal control procedure for the control method of the earth leakage breaker 7, and a drive output unit 3d that outputs a control drive signal for driving the earth leakage breaker 7 based on the generated control signal. , an input section 3e into which monitoring data necessary for monitoring the earth leakage circuit breaker 7 and a control drive signal from the drive output section 3d are input, and a code decoding section 3b.
Specific monitoring information necessary for the central control monitoring device 1 based on the input monitoring data and control drive signal, such as monitoring information indicating normal operation and abnormal operation of the earth leakage circuit breaker 7. The monitoring information generating section 3f includes a monitoring information generating section 3f that generates the monitoring information, and a code generating section 31 that performs encoding necessary for transmission from the monitoring information of the monitoring information generating section 3f.

As in Fig. 9, 4 is the load, 5 is the main circuit power supply, 6 is the distribution line, 7 is the earth leakage breaker which is the distribution equipment, 7g is the main circuit, and 7e is the current transformer for detecting earth leakage. , 7b is a switching device for disconnecting the main circuit 7g in the event of an overload, short circuit or electric leakage accident. Reference numeral 8 denotes an electrical operating device which is a power distribution device operating section for opening and closing the earth leakage breaker 7, and is connected to the drive output section 3d of the terminal control and monitoring device 30. AX is an auxiliary contact for detecting the open/leap mode of the switching device 7b of the earth leakage breaker 7. AL is an alarm contact for detecting an overcurrent interrupting operation, a short circuit interrupting operation, or an earth leakage operation mode (referred to as tripping) of the earth leakage breaker 7. And EAL is the earth leakage operation mode of the earth leakage breaker 7.
This is an earth leakage alarm contact for detecting an earth leakage trip (referred to as an earth leakage trip). These auxiliary contacts AX, alarm contacts AL, and earth leakage alarm contacts EAL are connected to the input section 3e of the terminal control and monitoring device 30.
It is connected to the.

In this embodiment, a central control monitoring device 1 and a terminal control monitoring device 3
Transmission of signals between 0 and 0 is realized by a microcomputer, and the frame structure necessary for this transmission is shown in Figure 2. In Figure 2, SA is the self address, DA is the other party's address, and CW is the address of the present invention. Related commands and notification commands, BC is an area to store the number of subsequent data,
DT is data for commands and notifications (used only when necessary), and FCC is a frame check code.

Transmission information is transmitted and received between the central control and monitoring device 1 and the terminal control and monitoring device 30 using the above frames as one unit.

In the apparatus of the embodiment configured as described above, the operation of the control command, for example, the control to turn on the earth leakage breaker 7 will be explained based on FIG. 3. When a control procedure to turn on the earth leakage circuit breaker 7 is generated in the central control monitoring device 1 based on a predetermined program, a common or dedicated command (in this case, rON command) is sent to a predetermined power distribution device. Generate and from this CW in Figure 2,
The BC and DT are arranged to form a frame, and the frame is transmitted to the terminal control and monitoring device 30 as a control command.

That is, the third diagram is a flowchart of the execution operation of the control command.
In the figure, the central control and monitoring device 1 is the terminal control and monitoring device 3.
0 (step 31). This rON command is sent to the terminal control and monitoring device 30.
is received by the transmitter/receiver 3a. Step 32) checks the transmission frame shown in FIG. It is determined whether the CW is a control command or a monitoring command, and in this example, the rON command is determined to be a control command, and the control signal generation unit 3c is operated.

The control signal generation unit 3C generates a control signal indicating the optimum ON operation procedure for the earth leakage breaker 7 as a connected power distribution device based on CW and DT, and outputs a control drive signal via the drive output unit 3d. The rON command is executed by outputting the command (step 33). rON in this case
An example of the execution procedure of the "command" is shown in a flowchart diagram in FIG.

First, the monitoring information generating unit 3f determines whether or not the earth leakage breaker 7 is tripped due to overcurrent, short circuit, or leakage among the monitoring data input to the input unit 3e of the terminal control and monitoring device 30.
Check the state of alarm contact AL at step 41).
) If there is no lip, execute the ON operation of the electric operating device 8 via the control signal generation section 3c and the drive output section 3d (step 42), and then check the ON-OFF state of the earth leakage breaker 7 among the monitoring data. Check the state of the auxiliary contact AX, step 43), and if the ON operation is completed, r
Complete the execution of "ON command". In addition, earth leakage breaker 7
If the circuit breaker is tripped, perform a reset operation to release the trip state before executing the above-mentioned ON operation (step 44). Most of the reset processing is performed by the same processing as the OFF operation, but if the reset processing is independent, it is sufficient to execute the reset processing to that effect.After that, check the alarm contact AL again in step 45. ), if the reset has been completed, step 42
The ON operation is executed at step 43, and the ON operation is performed at step 43.
L, complete the operation if you know what happened. Further, if the reset is not completed in step 45, step 46
Then, predetermined error processing is executed to complete the execution of the "ON command".

Next, returning to FIG. 3, after completing the execution of the rON command J (step 34), it is determined whether the operation is normal or abnormal, which will be explained in detail later, and the result is sent to the central control and monitoring device 1.
In response to step 35), the terminal control and monitoring device 30
"ON command" execution is completed.

Further, the OFF operation, which is the opposite concept to the ON operation, is similarly executed as shown in the flowchart of FIG. Steps 51 to 56 in Figure 5
It is clear that this can be omitted if the above-mentioned reset operation can be realized by the same procedure as the OFF operation.

Next, the operation of the monitoring command will be explained with reference to FIG. 6, which shows an example of the execution procedure of the "monitoring command" in a flowchart.

First, the central control monitoring device 1 generates and transmits a "monitoring command" using the same procedure as when transmitting the "ON command" (step 61).

Next, the terminal control/monitoring device 30 receives the "monitoring command" by the transmitter/receiver 3a (step 62), decodes it by the code decoder 3b, and if the CW is the "monitoring command", sends the monitor information generator 3f. When the monitoring data of the connected earth leakage circuit breaker 7 is input from the input section 3e, the monitoring information generating section 3f generates monitoring information as shown in FIG. 7 based on this data.
(Step 63).

That is, the monitoring information generation section 3f is the auxiliary contact AX.

Based on the three input information of alarm contact AL and earth leakage alarm contact EAL, "breaker OFF state", "breaker ON state", "overcurrent/short circuit trip operation state", and "earth leakage trip operation state" are determined. Normal operation mode, "overcurrent/short circuit trip operation abnormality", "earth leakage trip operation abnormality"
(2 types) and "other abnormality" abnormal operation modes, eight types of monitoring information are generated in total. That is, the monitoring information generation unit 3f detects an operation other than the normal operation of the earth leakage breaker 7 as an abnormal operation. The monitoring information generating section 3f passes the thus generated monitoring information to the code generating section 31, generates a code at the knee (for example, generates DT in the frame of FIG. 2), and transmits and receives the generated code into a transmission frame at the transmitting/receiving section 3a. , and sends it back (response) to the central control and monitoring device 1 (step 64), and completes the execution of the monitoring command J (step 65).

[Effects of the Invention] As detailed above, the present invention provides control procedures and monitoring information suitable for controlling and monitoring various power distribution equipment connected to a terminal control and monitoring device that constitutes a part of a power distribution equipment control and monitoring device. A control signal generation unit and a monitoring information generation unit are provided to generate control signals, so terminal control and monitoring equipment can be controlled and monitored using external macro control and monitoring commands, and complicated control and monitoring procedures and prohibitions for various power distribution equipment can be controlled and monitored. Not only does it have many advantages, such as simple and high-speed control and monitoring without having to be familiar with the power distribution equipment or the trouble of preparing control and monitoring programs for each power distribution equipment, but it also has the ability to Since any operation other than normal operation is detected as abnormal operation, there is an effect that not only normal operation but also abnormal operation can be grasped by the central control and monitoring device.

[Brief explanation of the drawing]

Fig. 1 is a detailed block diagram of an embodiment of the present invention applied to an earth leakage circuit breaker, Fig. 2 is an example of a frame structure for transmitting control and monitoring commands and notifications that transmit signal transmission lines, and Fig. 3 is a diagram of the present invention. Execution operation flowchart of U111 command using control command (rON command) related to
5 is an operation flowchart showing an example of control signal generation in a terminal control and monitoring device based on the rON command and rOFF command as control commands according to the present invention, and FIG. 6 is a monitoring command according to the present invention. FIG. 7 is a flowchart of the execution operation of the monitoring command according to the present invention, and FIG.
9 is a basic block diagram showing a general power distribution equipment control and monitoring device, FIG. 9 is a connection diagram showing a partial block diagram of the power distribution equipment control and monitoring device of FIG. 8 when an earth leakage breaker is connected as the power distribution equipment, FIG. 10 is a flowchart relating to signal transmission and reception between a central control and monitoring device and a terminal control and monitoring device in a conventional example. In the figure, 30 is a terminal control and monitoring device, 3a is a transmission/reception unit, 3b is a code decoding unit, 3c is a control signal generation unit, 3d is a drive output unit, 3e is an input unit, 3r is a monitoring information generation unit, 31
is a code generator. In each figure, the same reference numerals indicate the same or corresponding parts. Chi 2 figure SA self-address strategy 3 centroid 4 figure sieve 6 figure desecration 5 centroid 7 figure female electrician escape common &'s supervision 斺斺方 X 11 broom 10 figure

Claims (1)

[Claims] A central control and monitoring device, a large number of terminal control and monitoring devices, each of which controls and monitors the corresponding power distribution equipment, and a device that connects these terminal control and monitoring devices to the central control and monitoring device and controls these terminals. In a power distribution equipment control and monitoring device that includes a signal transmission line that connects monitoring devices, each terminal control and monitoring device includes a receiving unit that receives a signal transmitted from the central control and monitoring device through the signal transmission line and that includes a command. a code decoder that decodes from the received signal whether the command is a control command or a monitoring command; and a code decoder that is operated by the decoded control command and generates a control signal that indicates an optimal control procedure for the control method of the corresponding power distribution equipment. a control signal generation unit, a drive output unit that outputs a control drive signal for driving the power distribution equipment based on the generated control signal, and an input unit that receives monitoring data necessary for monitoring the power distribution equipment from the power distribution equipment; Operated by the decoded surveillance command,
a monitoring information generation unit that generates monitoring information representing normal operation and abnormal operation of the power distribution equipment based on the monitoring data; a code generation unit that performs encoding necessary for transmission from the generated monitoring information; and an encoded monitoring unit. A power distribution equipment control and monitoring device, comprising: a transmitter that transmits a signal containing information to the central control and monitoring device.