JPS6026734U

JPS6026734U - Automatic load selection and cutting device

Info

Publication number: JPS6026734U
Application number: JP11968383U
Authority: JP
Inventors: 藤原　範幸
Original assignee: Mitsubishi Electric Corp
Current assignee: Mitsubishi Electric Corp
Priority date: 1983-07-29
Filing date: 1983-07-29
Publication date: 1985-02-23
Also published as: JPH0321176Y2

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Brief explanation of the drawing]

第１図と第２図は従来の自動負荷選択しゃ断装置のブロ
ック図、第３図は従来の自動負荷選択しゃ断装置のトリ
ップ回路図、第４図は本考案の一実施例による自動負荷
選択しゃ断装置のブロック図、第５図は本考案の一実施
例による自動負荷選択しゃ断装置のトリップ回路図であ
る。１・・・・・・電源電力検出器、２〜６・・・・・・負
荷電力検出器、７・・・・・・電力加算器、８・・・・
・・電力比較器、９・・・・・・選択指令器、１０・・
・・・・増信号リレー器、１１・・・・・・減信号リレ
ー器、１２〜１６・・・・・・選択記憶リレー器、１２
ａ〜１６ａ・・・・・・選択信号接点、１２ａＴ□〜１
５ａＴ□・・・・・・州側歩進信号接点、１３ａＴ２〜
１６ａＴ２・・・・・・域側解除信号接点、１７・・・
・・−電源解列信号、１８・・・・・・負荷トリップ回
路、１９・・・・・・救済負荷電力加算器、２０・・・
・・・救済負荷電力比較器、２１・・・・・・救済方式
選択器、２２・−・・・・波涛負荷指令器、２３〜２７
・・・・・・救済負荷選択リレー　　　−器、２３ａ〜
２７ａ・・・・・・救済負荷選択信号ａ接点、２３ｂ〜
２７ｂ・・・・・・救済負荷選択信号す接′点。なお、
図中、同一符号は同−又は相当部分を示す。Figures 1 and 2 are block diagrams of a conventional automatic load selection breaker, Figure 3 is a trip circuit diagram of a conventional automatic load selection breaker, and Figure 4 is an automatic load selection breaker according to an embodiment of the present invention. A block diagram of the device, FIG. 5 is a trip circuit diagram of an automatic load selection cutoff device according to an embodiment of the present invention. 1...Power supply power detector, 2-6...Load power detector, 7...Power adder, 8...
...Power comparator, 9...Selection command unit, 10...
... Signal increase relay device, 11 ... Signal reduction relay device, 12 to 16 ... Selection memory relay device, 12
a~16a...Selection signal contact, 12aT□~1
5aT□・・・・・・State side step signal contact, 13aT2～
16aT2... area side release signal contact, 17...
...-Power supply disconnection signal, 18...Load trip circuit, 19...Relief load power adder, 20...
... Relief load power comparator, 21 ... Relief method selector, 22 ... Wave load command device, 23 to 27
...Relief load selection relay - device, 23a~
27a...Relief load selection signal a contact, 23b~
27b...Relief load selection signal contact. In addition,
In the figures, the same reference numerals indicate the same or corresponding parts.

Claims

[Scope of utility model registration request]

(1) When disconnection occurs between the power purchasing system and private power generation system during parallel operation, less important loads are prioritized according to a predetermined priority that matches the power of the disconnected power system. In an automatic load selection cutoff circuit that cuts off loads, when there is an unbalance between the power of the power supply system to be disconnected and the power to be cut off, relief can be provided if there is a load to be cut off that is commensurate with the unbalanced differential power. An automatic load selection cutoff device characterized by adding a cutoff load relief circuit.

(2) Utility model registration claim 1, characterized in that a cutoff load relief circuit is added to the detection of the load to be cut off commensurate with the power differential bone in a combination that minimizes the differential power after relief. Automatic load selection cutoff device as described in .

(3) We have added a cutoff load relief circuit that sequentially checks the load that is the most important load to be cut off according to the power difference, that is, the load that has the lowest priority for cutoff. An automatic load selection and cutoff device according to claim 1, characterized in that it is a utility model.