JPH0349523A - Power distribution system control device - Google Patents

Abstract

PURPOSE:To rapidly grasp an accident point for a malfunction of a communication system by registering, storing the connecting state of the system together with the connecting state of a line, and displaying to vary a malfunction zone when the system is abnormal. CONSTITUTION:A computer 21, a man-machine conversational display unit 22 and an information transmitter 23 for obtaining information of a power distribution substation are installed in a power distribution center 20, while an information transmitter 24 to a high voltage switching unit is disposed, and connected to information transmitters 3001-3012 through communication lines 2000-2015. A communication system view is displayed in addition to the display of the power distribution system on the unit 22, and the malfunction of the communication system can be automatically detected to be displayed by logically judging it by a software.

Description

DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention (Industrial Application Field) The present invention relates to a power distribution system control device for remotely supervising and regulating a power distribution system.

(Prior art) Conventionally, automatic control of power distribution systems has been carried out from a computer through a remote viewing control device for controlled equipment such as high-voltage switches in power distribution fields.
The communication routes 1 to 1 for remote monitoring and control are only displayed using a display device such as a cathode ray tube (cathode ray tube).
Diagrams, etc. were generally kept on hand as separate drawings.

(Problem to be solved by the invention) One of the factors that contributes to the smooth execution of the automatic control described above is the occurrence of an abnormality in the communication system. The display looked like this, and it sometimes took a long time to find the point of failure.

The present invention has been made to solve the above-mentioned problems, and can quickly solve the problems of -i. It is an object of the present invention to provide a power distribution system control device that can identify failure points.

[Structure of the Invention] (Means for Solving the Problems) In order to achieve the above object, the present invention configures a plurality of high voltage switches provided in a lightning distribution system so that they can be monitored and controlled via communication lines, and The center is equipped with a display device for computer-man-machine interaction, and the distribution system control device detects and disconnects fault sections in the event of a system fault, and transfers the load to healthy sections. The connection state of the system is also registered and stored, and the abnormal section is displayed differently in the event of an abnormality in the communication system.

(Function) For the integrated system, the communication route diagram is registered along with the power distribution system diagram so that it can be displayed on the display device. When an abnormality occurs, the abnormality in the communication route measurement is detected and displayed based on logical judgment based on the connection state of the power distribution system and the connection state on the communication route.

(Embodiment) An embodiment will be described below with reference to the drawings.9 FIG. 1 is a configuration diagram of an embodiment of a power distribution system control device according to the present invention.

In FIG. 1, a distribution substation 10 has a high voltage bus 12 on the secondary side of a main transformer 11, and a distribution line breaker 14.
15. 16 is connected to the H line 12, and the other is connected to the high voltage distribution lines 100, 200, 300.

In addition, an information transmission device (
slave stations) 13 are arranged. High voltage distribution line 100, 2
00 and 300 have high voltage switchgear 11 on each load side.
1, 211, and 311 are connected as shown in FIG. 1 to form a power distribution section.

Below, high voltage switchgear 112, 113, 2 one after another
12, 213, 312, 313 are arranged,
There are power distribution sections 101, 102, 201 between each
, 202, 301, 302 are formed. Moreover, although the power distribution sections 103, 203, and 303 are not shown, they are connected to other corresponding power distribution substations.

On the other hand, high voltage switchgear 1 is installed between power distribution sections 100 and 200.
20, and a high voltage switchgear 130 is also arranged between the power distribution sections 201 and 301.

The power distribution center 20 includes a control computer 21 for automatic processing,
A display device 22 for man-machine interaction and an information transmission device (8 stations) 23 for obtaining information on distribution substations are connected to a communication line 1000.
It is installed opposite to the distribution substation 10 via the power distribution substation 10.

On the other hand, an information transmission device (master station) 24 to the high voltage switchgear is arranged and connected to information transmission devices (slave stations) 3001 to 3012 via communications 1i 2000 to 2015, as shown in FIG.

The information transmission devices (slave stations) 3001 to 3012 are connected to corresponding high voltage switching devices as shown in the slave station explanatory diagram of FIG. 2.

On both sides of the contact 121 of the high voltage switch 120, a power transformer 123. 124 is arranged, and the secondary side is led to the remote monitoring control slave station 3009, and the closing coil 1 of the switch 120
In addition to supplying power to 22, communication modem 2 and logic circuit 3
Supplied as a power source.

On the other hand, the communication modem 2 is connected to the communication line 2011-1. 2011
-2, and is connected to the information transmission device 24 and communication line 2 of FIG.
010, 2009, 2008. 2000, and is configured to allow information transmission. The combination with the high voltage switch is the same for any high voltage switch.

The means of the present invention not only displays a power distribution system diagram on the display device 22, but also displays communication lines 2000 to 2015 extending from the information transmission device 24.
This is done by registering in advance so that it can also be displayed.

Display devices for man-machine interaction are showing remarkable progress in hardware such as the use of light bends and joysticks for display and serial correction changes, as well as in the software that supports them. is at a stage where no specialized knowledge is required.

The present invention aims to make maximum use of this display device for power distribution system control.

The distribution system state diagram will be displayed as shown in Figures 3(a) and (b). Here, it is common practice to display the symbol in a color, such as a hatched part in red to indicate a turned-on state, and a blank part to indicate a turned-off state in green. Symbols include not only switches 111 to 313, but also distribution sections 100,
The same applies to 101 to 303.

Figure 3 (a) Under normal conditions, the distribution line breaker 1
4 is the interval 100, 101 . 102, the distribution line breaker 15 connects sections 200, 201, 202, and the distribution line breaker 16 connects sections 300, 301.
, 302 are respectively included in the supply range.

The diagram of accident section detection and accommodation status in Figure 3(b) is for section 1.
The final form is shown in which accident F occurred at 00, and load accommodation was performed from the high voltage switchgear 110 to the detected and disconnected healthy section 101 of the accident section 100, and from the high voltage switchgear 113 to the remaining healthy section 102. , until this state is reached, the computer software automatically makes a logical judgment and executes the control operation.

Since the operating procedure is already known, the explanation will be omitted.

On the other hand, the connection status of the communication system is input as shown in Figure 4, and Figure 3(a) and 3 of the power distribution system diagram in the normal state are input.
Figure (b) is the target of display, but if necessary, the connection status of the communication system can be displayed alone on the display device as shown in Figure 4, or by using superimposed display technology. For example, both can be displayed together as shown in FIG.

Information transmission equipment for power distribution substations13. 23 does not transmit any state change, the alarm transmitting device of the high voltage switchgear may not show any change in the slave state. This condition occurs when ■ the high-voltage switchgear is manually operated directly at the site.

■ If the high voltage line is disconnected and the auxiliary power source is lost.

■ In case of communication system abnormality including slave station malfunction.

The first two can be determined based on the operation and connection status of the power distribution system. That is, when operating the hands ljJ, since the operations are performed while maintaining wireless communication with the center, any change in the situation is known in advance.

If a high-voltage line breaks, there will be a power outage after the point of breakage, and if you run a program that checks the connection status of the power distribution system after the broken point, you can detect the breakage.

It is difficult to say that communication system abnormalities, including slave station failures, are completely eliminated, and failures in communication line joints and disconnection of attached communication lines due to collisions with utility poles caused by vehicles, etc., are frequently occurring defects. In particular, communication lines for transmitting information between high-voltage switchgears are often exposed to this danger because they are distributed over a wide area.

Therefore, when a change in status is input from the information transmission device 24, according to the flowchart in FIG. 5, it is possible to automatically classify system accidents and communication accidents and display them on the display device. .

In FIG. 5, steps 850 to 853 display the power distribution system on the display device, and steps S56 to 358 display the communication line route on the display device.

For example, if a disconnection accident occurs in the communication line 2010 in FIG. 4, remote monitoring and control of the slave stations 3008 and 3009 further back from this line becomes impossible. In this case, slave stations 3008 and 3009 are unable to reply, that is, unable to monitor. A state where no reply is received may also occur when the auxiliary power source is lost, but in this case, the connection status of the power distribution system,
That is, the circuit breaker 15 and high voltage switchgear 21 in FIG. 3(a)
2 is a human, and only the high voltage switchgear 211 is unknown, so a logical mismatch is found from comparing the system and the status change, and the process moves to step 856, which searches for the connection status on the communication route, and the communication By executing a series of processes such as station selection according to the connection status of the system and displaying the results on a display device, it can be determined that the lack of replies from slave stations 3008 and 3009 is caused by section 2010 of the communication route. It can be easily determined that there is. Therefore, if this section 2010 can be displayed in red, for example, the accident point can be quickly found and the purpose of the invention can be achieved.

[Effects of the Invention] As explained below, according to the present invention, in addition to displaying the power distribution system, a communication system diagram is displayed on the display device, and it is possible to respond to status change information from the communication system information transmission device. The software is configured to make logical judgments and automatically detect and display communication system malfunctions, which replaces the conventional method of manually detecting malfunctions using a communication route diagram at hand. In comparison, significant time savings can be achieved.

[Brief explanation of drawings]

FIG. 1 is a configuration diagram of an embodiment of a power distribution system control device according to the present invention, FIG. 2 is an explanatory diagram of a high-voltage switchgear and an information transmission device, and FIG. 3 is an example diagram of a power distribution system displayed on a display device. FIG. 4 is a diagram showing an example of communication system display on a display device, and FIG. 5 is a flow explanatory diagram of trouble handling. 10... Distribution substation 13 23 24... ii't information transmission device 20... Power distribution center 21... Control computer 22... Display device (CRT)

Claims (1)

[Claims] Multiple high-voltage switches installed in the power distribution system are configured to be able to be monitored and controlled via communication lines, and a display device for computer-man-machine interaction is installed at the power distribution center to detect and disconnect fault sections in the event of a system fault. A power distribution system control device that transfers load to healthy sections is characterized by registering and storing the connection status of the communication system as well as the connection status of the grid, and changing the display of the abnormal section in the event of an abnormality in the communication system. Distribution system control equipment.