JPH0834668B2 - Blackout facility determination method - Google Patents

Description

The present invention relates to a power outage facility determination method for determining the charging or power outage state of an equipment group having a plurality of power facilities from the state of a relay that displays the state of each power facility.

In the conventional power outage facility determination method, a relay for determining the presence or absence of a plurality of voltages is provided in one facility group, and the state of the facility group is determined by the majority of the determination results of these relays.

FIG. 1 is a diagram showing the configuration of one equipment group electrically connected. In the figure, 1 to 7 indicate electric power facilities, and their respective states are indicated by "charging" and "stop". "Charging" indicates a state in which the relay detects the presence of voltage in the corresponding power equipment, and "stop" indicates a state in which it detects no voltage.
In this case, as shown in the figure, the electric power equipments 1, 2 and 3 are "charged" and the electric power equipments 4 to 7 are "stopped". Therefore, since the number of "stops" is larger than the number of "charges" in this equipment group, it is determined that there is a power failure by a majority vote.

FIG. 2 is a diagram showing a configuration when two equipment groups exist. In this case, if it is recognized that the number of equipment groups is one, even though the number of equipment groups is two, a power failure is determined as in the case of FIG. 1 and an erroneous determination is made.

Recently, the reliability of relays used for determining the presence / absence of voltage is very high, and the probability that two or more devices malfunction at the same time is negligibly small. In the case as shown in FIG. 2, the number of minority opinions, that is, “fills” is two or more, and therefore it should be determined that the judgment information has some error (in this case, recognition of the equipment group).

The conventional power outage facility determination method has a drawback that the determination result becomes unreliable because the determination is simply executed according to the majority opinion even if there are a plurality of minority opinions.

This invention was made in order to eliminate the drawbacks of the conventional determination method as described above. If the number of minority opinions exceeds a predetermined value, it is assumed that the determination information is abnormal.
The purpose is to suspend the determination of the charging or power failure state and improve the reliability of the determination result.

An embodiment of the present invention will be described below with reference to the drawings.
Referring to FIG. 3, there is shown a facility group including power facilities 1 to 7 similar to that of FIG. 1, in which the number of facilities with voltage is 1 and the number of facilities without voltage is 6. In this case, since the number of facilities with voltage, which is a minority opinion, is 1,
If there is no abnormality in the judgment information, this equipment group is judged to have a power failure by the majority vote.

Next, referring to FIG. In this case, as described above, the number of facilities with voltage is 3, the number of facilities without voltage is 4, and the number of the former, which is a minor opinion, is a predetermined number, for example, 2
That is all. Therefore, in this case, it is determined that the power failure state is unknown, because the determination information already contains some error.

As described above, according to the present invention, when the number of relays belonging to the minority side of the determination target is plural, it is configured to determine that an error is included in the determination of the majority decision, so that charging or power failure occurs. The reliability of the determination result is improved, and it is possible to recognize that there is an error in the division of the equipment groups.

[Brief description of drawings]

FIG. 1 to FIG. 3 are diagrams showing a conceptual configuration of an equipment group. 1 to 7 ... Electric power equipment.

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Takao Omata 1-3-1, Uchisaiwaicho, Chiyoda-ku, Tokyo Tokyo Electric Power Co., Inc. Research & Development Headquarters R & D Research Center General Automation Laboratory (72) Inventor Yoshihiro Miki Tokyo 1-1-1 Shibaura, Minato-ku, Toshiba Headquarters Office (72) Inventor Mamoru 5-2-1 Omika-cho, Hitachi-shi, Ibaraki Hitachi Ltd. Omika Plant (72) Inventor Goichiro Usatorou Hyogo 1-2, Wadazaki-cho, Hyogo-ku, Kobe, Japan Mitsubishi Electric Corporation Control Works (56) Reference JP-A-59-21231 (JP, A) JP-A-62-110438 (JP, A) JP Sho 62-239827 (JP, A)

Claims (1)

[Claims] 1. A majority decision of an operating or non-operating state of a relay which is provided in each of the power facilities and displays a charging or power outage state of a facility group including a plurality of mutually connected power facilities. In the power outage facility determination method, the power outage facility determination method is characterized in that when the number of the relays belonging to the minority side of the determination target is plural, it is determined that the determination includes an error. .