JPS62290316A - Panel display of digital protective relay - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

Detailed Description of the Invention 3. Detailed Description of the Invention A. Field of Industrial Application The present invention relates to a panel display device for a digital protective relay.

B0 Summary of the Invention The present invention provides a panel display device that displays the selection of a relay element and displays the settings of a setting value. It is a method that reduces the number of panel components and increases versatility without reducing operability.Conventional technologyIn general, digital protection m'tlL The device has two relays with a combination unit as the central part, and performs protection calculations that compare each input and the value obtained from each input with a set value C for each, and outputs the protection output as the calculation result. Configuration I to obtain: is done. The panel display device 12 of such a protective relay is configured so that each relay element can display input and output information.

FIG. 4 shows a panel configuration diagram of a conventional panel display device.

The panel 1 includes a numeric display 2, a unit display 3 that indicates the unit of the numerical value displayed on the numeric display 2, and a unit display 3 that indicates the unit of the numerical value displayed on the numeric display 2. Select and operate each relay element to display the related value on the numeric display 2≦ A relay element selection switch f4 for displaying two relay elements, and a numerical switch 5 for inputting a set value for inputting the set value of each relay element and displaying the set value on the numerical display 2. Here, a lamp (such as a light emitting diode) that lights up to indicate that one of the relay element selection switch f4 and the unit display 3 is selected is installed in or near each switch or display C2.

D0 Problems to be Solved by the Invention In conventional panel display devices (2), there was a problem in which the size of the panel increased due to the increase in the number of relay elements.

In other words, in addition to the switch, the relay element selection switch f4 requires a lamp to display the selected relay element, and although this lamp is built-in, the individual switches are large (secondarily, as power systems become larger). , the increase in the number of relay elements associated with complication C2 directly accompanies an increase in the size of the panel, making it impossible to meet the demand for miniaturization of the panel ≦2.

Regarding this point C:, if you try to select a relay element with a combination of few switches fl2, the relay element selection operation will require 2 or 3 actions, resulting in poor operability, and the selection edge f'\: (; confusion To cause something to happen I: to become.

Means and operation for solving the E0 problem The present invention has been made in view of the above problem C'''Lffi. Selection C of a selection switch of a numeric display that switches and displays values numerically, a numeric switch that sets the relay element and setting value, and a selection switch that selects one of the alphanumeric display and the numeric display. processing means for performing a lighting display of the underline segment of the alphanumeric display or the numeric display and processing according to the setting of the numeric switch; The selection display of the relay element and the setting display of the set value are performed in accordance with the display of the underline segment of each display.

F. Embodiment FIG. 1 is a panel configuration diagram of a panel display device showing an embodiment of the present invention. Panel 11 (the second is the numeric display 12,
It includes a unit display 13, an alphanumeric display 14 that displays the selected relay element in alphanumeric characters, and a numeric switch 15. Here, the numeric display 12 and the alphanumeric display 14 are each provided with an underline segment, and the numeric switch 15 is provided with an empty key C: a selection switch f15A for selecting the displays 12 and 14.

In such a configuration, by operating the selection switch f15A, one of the alphanumeric display 14 and the numeric display 12 is displayed as an underline switching display, and the operation input by the numeric switch 15 is displayed as an underline due to this switching fit ≦U. 14 or 12. With this function), is it possible to select a relay element?
By operating 15A, the underline of the alphanumeric display 14 is lit, and by inputting numerical values from the numeric switch 15, alphanumeric characters θ to 9 and A to H are displayed, and the relay element is selected. In addition, the selected value is set manually by operating the selection switch 15A to light up the underline of the numeric display 412, and inputting afi! in the numeric switch f15 to set the setting value.
Obtain the strain profile display for the selected relay element.

FIG. 2 shows a circuit diagram for obtaining the above-mentioned display processing. The microprocessor IB has a memory 17, a display 12.14, a numeric switch f-15, a selection switch y-15.
It has an input/output interface with A, organically connects these, and processes relay element selection and setting value display.

18 is the item movement switch of the relay element, number switch 'j-151:.

Relay element selection C: Instead, the relay element selection is switched by sequential transfer.

In the above configuration, the microprocessor 1B has a selection switch? When the display 12 and 14 are switched to underline display according to the operation of the display 15A, the switching state is stored in the memory 1.
7 (Memory or switching the processing flow, selecting the relay element according to this switching state, reading out its set value, and displaying the unspecified value).

FIG. 3 shows an example of a processing flowchart of the microprocessor t16. Suin? 15A operation input signal acquisition (step 5t)c, it is determined whether the current underline display is on the relay element side or not.Step S2), IJ
If it is on the red element side, set value side C; change the underline indication (step S3), then press the number switch 1.
5 (Update the setting value and process the settings by inputting double numbers)
Step S4). Also, if it is on the set value side as determined in step S2, the underline display is switched to the relay element side (step S5), and the subsequent number switch f1
Selection and display processing of relay elements is performed by inputting numbers in step 5 (step 36).

In the embodiment, it goes without saying that the unit display 13 can be configured to display characters on the numeric display 12 or the alphanumeric display 14 as a single unit.

In addition, an alphanumeric display and a numeric display are used as one display,
It is also possible to use a configuration C2 in which a part or all of this display device is used to display relay elements and set values all at once or in a switched manner.

According to the present invention, the relay elements are selectively displayed on the alphanumeric display, the setting value is set and displayed on the numeric display, and the setting input by the numeric switch C is performed on both displays. The following effect is achieved by marking the switch with an underlined display.

(1) Since the relay elements are directly displayed in alphanumeric characters, the need for each relay element≦corresponding switch and its display can be eliminated, resulting in a significant reduction in panel space.

12) Since the underline segments of both displays are used to indicate the selection of the display, operability can be improved by using a common number switch for numeric switches.

(3) Since the setting functions are expanded, C2, such as changing protection functions, can be freely handled, and the versatility of the panel itself can be increased.

[Brief explanation of drawings]

FIG. 1 is a panel configuration diagram showing an embodiment of the present invention, FIG. 12 is a processing circuit diagram for processing each part of the panel in FIG. 1,
Fig. 3 is a processing flowchart in Fig. 2 (2), and Fig. 4 is a conventional panel configuration diagram.
Unit display, 14...Alphanumeric display, 15...Numeric switch, 15A...Selection switch 0 Figure 1 Refresh = 4 juice jf) Tsuma month 4 Luisi Banjoshi Figure 2 Zu agency large , Chi J /) Bako +Ly place 哩回〆4Figure 18
15A Figure 3: Real-life store, Riko Mart Figure 4: Traditional bar, #Tsumuguchi

Claims (1)

[Claims] an alphanumeric display that switches and displays a plurality of relay elements using alphanumeric characters; a numeric display that switches and displays the set value of each relay element using numbers; a numeric switch that sets the relay elements and set values; A selection switch for selecting either the display or the numeric display, and a lighting display of the underline segment of the alphanumeric display or the numeric display according to the selection of this selection switch, and processing according to the settings of the numeric switch. What is claimed is: 1. A panel display device for a digital protective relay, characterized by comprising processing means for performing the processing.