JPH01131168U - - Google Patents

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Publication number
JPH01131168U
JPH01131168U JP2715688U JP2715688U JPH01131168U JP H01131168 U JPH01131168 U JP H01131168U JP 2715688 U JP2715688 U JP 2715688U JP 2715688 U JP2715688 U JP 2715688U JP H01131168 U JPH01131168 U JP H01131168U
Authority
JP
Japan
Prior art keywords
sampling
change detection
vector
fixed
data
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.)
Granted
Application number
JP2715688U
Other languages
Japanese (ja)
Other versions
JP2538758Y2 (en
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed filed Critical
Priority to JP2715688U priority Critical patent/JP2538758Y2/en
Publication of JPH01131168U publication Critical patent/JPH01131168U/ja
Application granted granted Critical
Publication of JP2538758Y2 publication Critical patent/JP2538758Y2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Description

【図面の簡単な説明】[Brief explanation of the drawing]

第１図はこの考案の実施例を示すブロツク線図
、第２図はこの考案を説明するための波形図、第
３図乃至第６図はこの考案を説明するためのベク
トル図である。 １……電圧変成器、２……電流変成器、３〜５
……入力変換器、６……正相回路、ＡＦ……アナ
ログフイルタ、Ｓ／Ｆ……サンプルホールド回路
、ＭＰＸ……マルチプレクサ、Ａ／Ｄアナログ／
デジタル変換器、ＣＯＮ……制御回路、ＣＰＵ…
…演算装置。 FIG. 1 is a block diagram showing an embodiment of this invention, FIG. 2 is a waveform diagram for explaining this invention, and FIGS. 3 to 6 are vector diagrams for explaining this invention. 1...Voltage transformer, 2...Current transformer, 3-5
...Input converter, 6...Positive phase circuit, AF...Analog filter, S/F...Sample hold circuit, MPX...Multiplexer, A/D analog/
Digital converter, CON...control circuit, CPU...
...Arithmetic device.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] ベクトル変化検出対象データを一定時間々隔を
もつてサンプリングする固定サンプリング方式に
おいて、サンプリングデータからサンプリング時
点での正相電圧を基準にその余弦成分及び正弦成
分を求めるようにしたことを特徴とするベクトル
変化検出装置。 A vector characterized in that, in a fixed sampling method in which data subject to vector change detection is sampled at fixed time intervals, the cosine and sine components of the sampling data are determined based on the positive-sequence voltage at the time of sampling. Change detection device.
JP2715688U 1988-02-29 1988-02-29 Vector change detector Expired - Lifetime JP2538758Y2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2715688U JP2538758Y2 (en) 1988-02-29 1988-02-29 Vector change detector

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2715688U JP2538758Y2 (en) 1988-02-29 1988-02-29 Vector change detector

Publications (2)

Publication Number Publication Date
JPH01131168U true JPH01131168U (en) 1989-09-06
JP2538758Y2 JP2538758Y2 (en) 1997-06-18

Family

ID=31249404

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2715688U Expired - Lifetime JP2538758Y2 (en) 1988-02-29 1988-02-29 Vector change detector

Country Status (1)

Country Link
JP (1) JP2538758Y2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2012093137A (en) * 2010-10-25 2012-05-17 Mitsubishi Electric Corp Method and apparatus for measuring ac electrical quantity

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2012093137A (en) * 2010-10-25 2012-05-17 Mitsubishi Electric Corp Method and apparatus for measuring ac electrical quantity

Also Published As

Publication number Publication date
JP2538758Y2 (en) 1997-06-18

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