JPS5811923U - Momentary power failure detection device for digital protective relays - Google Patents
Momentary power failure detection device for digital protective relaysInfo
- Publication number
- JPS5811923U JPS5811923U JP10504381U JP10504381U JPS5811923U JP S5811923 U JPS5811923 U JP S5811923U JP 10504381 U JP10504381 U JP 10504381U JP 10504381 U JP10504381 U JP 10504381U JP S5811923 U JPS5811923 U JP S5811923U
- Authority
- JP
- Japan
- Prior art keywords
- detection device
- failure detection
- power failure
- converter
- digital protective
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Landscapes
- Emergency Protection Circuit Devices (AREA)
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) [Abstract] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
ｊ 第１図は、従来の瞬停検出装置を示した構成図
１、 第２図は、本考案の一実施例を示した構成図であ
る。
１はＤＣ−ＤＣコンバータ、２はＡ／Ｄ変換器、３は瞬
断検出回路、４はμＣＰＵ、５１〜５．はアクティブフ
ィルタ、６１〜６．はサンプルホールド、７はマルチプ
レクサ。j Fig. 1 is a block diagram showing a conventional instantaneous power failure detection device, and Fig. 2 is a block diagram showing an embodiment of the present invention. 1 is a DC-DC converter, 2 is an A/D converter, 3 is an instantaneous interruption detection circuit, 4 is a μCPU, 51 to 5. are active filters, 61-6. is the sample hold, and 7 is the multiplexer.
Claims (1)
レクサ、Ａ／Ｄ変換器を介して演算処理装置に入力して
演算を施こし、この結果により電力系統の保護を行うデ
ィジタル保護継電器において前記Ａ／Ｄ変換器の電源で
あるＤＣ−ＤＣコンバータを設けると共に、前記マルチ
プレクサ−の入力に常時ＯＶを入力するチャンネルを設
け、このチャンネルのデータを演算処理装置に常時入力
し、演算を施こして実効値を求め、この値が予め設定し
た範囲を逸脱したときにリレー出力をロックするよう構
成したことを特徴とするディジタル保護継電器の電源瞬
停検出装置。Data is sampled in a transformer at a constant cycle, inputted to an arithmetic processing unit via a multiplexer and an A/D converter, and arithmetic is performed, and the A/D is used in a digital protection relay that protects the power system based on the results. In addition to providing a DC-DC converter that is the power source for the converter, a channel is provided to input OV at all times to the input of the multiplexer, and the data of this channel is constantly input to an arithmetic processing unit, which performs arithmetic operations to obtain an effective value. 1. An instantaneous power failure detection device for a digital protective relay, characterized in that the relay output is locked when the obtained value deviates from a preset range.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10504381U JPS5811923U (en) | 1981-07-15 | 1981-07-15 | Momentary power failure detection device for digital protective relays |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10504381U JPS5811923U (en) | 1981-07-15 | 1981-07-15 | Momentary power failure detection device for digital protective relays |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5811923U true JPS5811923U (en) | 1983-01-25 |
Family
ID=29899596
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10504381U Pending JPS5811923U (en) | 1981-07-15 | 1981-07-15 | Momentary power failure detection device for digital protective relays |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5811923U (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4967246A (en) * | 1972-10-30 | 1974-06-29 | ||
| JPS5112373A (en) * | 1974-07-22 | 1976-01-30 | Samitsuto Kogyo Kk | Wankeikibutsuno moyoseikeiki |
| JPS5373648A (en) * | 1976-12-13 | 1978-06-30 | Hisaka Works Ltd | Plate type heat exchanger |
| JPS55122418A (en) * | 1979-03-14 | 1980-09-20 | Hitachi Ltd | Input circuit monitoring system |
-
1981
- 1981-07-15 JP JP10504381U patent/JPS5811923U/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4967246A (en) * | 1972-10-30 | 1974-06-29 | ||
| JPS5112373A (en) * | 1974-07-22 | 1976-01-30 | Samitsuto Kogyo Kk | Wankeikibutsuno moyoseikeiki |
| JPS5373648A (en) * | 1976-12-13 | 1978-06-30 | Hisaka Works Ltd | Plate type heat exchanger |
| JPS55122418A (en) * | 1979-03-14 | 1980-09-20 | Hitachi Ltd | Input circuit monitoring system |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JPS59176327U (en) | Sampling signal abnormality monitoring device | |
| JPS5811923U (en) | Momentary power failure detection device for digital protective relays | |
| JPS5947230U (en) | Digital relay with time-limiting characteristics | |
| JPS5841097U (en) | Stationary Servius device | |
| JPS5950115U (en) | Protection circuit for switching type amplifier | |
| JPS5956572U (en) | current detection device | |
| JPS59183140U (en) | Digital protective relay device | |
| JPS58164345U (en) | Receiver IF filter increase/decrease device | |
| JPS58152043U (en) | monitoring device | |
| JPS5982881U (en) | Drift correction circuit | |
| JPS5994393U (en) | Image processing device | |
| JPS58123626U (en) | A/D converter noise removal device | |
| JPS5875349U (en) | Control signal transmission device for signal recording and reproducing equipment | |
| JPS5949202U (en) | signal input circuit | |
| JPS6057233U (en) | Automatic zero adjustment circuit for PCM equipment | |
| JPS59181950U (en) | Control circuit for combustion equipment | |
| JPS58156337U (en) | Protective relay device | |
| JPS6099834U (en) | Protective relay device | |
| JPS586472U (en) | Pilot signal identification circuit | |
| JPS5933311U (en) | AM detection circuit | |
| JPS58139720U (en) | amplifier | |
| JPS5977082U (en) | Signal line disconnection detection device for adjustment equipment | |
| JPS605242U (en) | Distribution line fusing characteristics processing equipment | |
| JPS5825590U (en) | Protective device for inverter equipment | |
| JPS5944133U (en) | Abnormal current detection device |