JPH01134926U - - Google Patents

Description

[Brief explanation of the drawing]

Figure 1 is a schematic block diagram showing the electrical configuration of the protective relay device, Figure 2 is a flowchart illustrating the procedure for identifying the selected combination, and Figure 3 is the procedure for setting the relay elements related to the selected combination. Fig. 4 is a reference diagram showing hardware to specifically explain the setting procedure of the above relay elements, and Fig. 5 is a flowchart showing protection when cosine energy is added to a high-voltage power system. Figure 6 is a circuit diagram showing a conventional example in which the configuration of the relay element in Figure 5 is made up of a single relay, and Figures 7A and B are diagrams showing the configuration of a relay element used for this purpose. FIG. 2 is a front view showing a power distribution board in which a group of relays is arranged. 1... A microcomputer including a relay element setting means, 2... A selection switch circuit as a selection means.

Claims (1)

[Scope of utility model registration request] In a protective relay device that protects a power system by giving a command to a circuit breaker tripping circuit from a relay element that detects an abnormality in the power system, the relay element is configured by a computer, and
A storage means for storing a plurality of combinations of relay elements prepared in correspondence with the form of an electric power system to which the protective relay device is applied, a selection means for selecting a specific combination from the stored combinations, and a relay related to the selected combination. 1. A protection relay device comprising a relay element setting means for setting an element.