JPS59169334A - インピ−ダンス変化率継電器 - Google Patents

インピ−ダンス変化率継電器

Info

Publication number
JPS59169334A
JPS59169334A JP58044713A JP4471383A JPS59169334A JP S59169334 A JPS59169334 A JP S59169334A JP 58044713 A JP58044713 A JP 58044713A JP 4471383 A JP4471383 A JP 4471383A JP S59169334 A JPS59169334 A JP S59169334A
Authority
JP
Japan
Prior art keywords
impedance
relay
current
calculating
change rate
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
JP58044713A
Other languages
English (en)
Japanese (ja)
Other versions
JPH0515134B2 (2
Inventor
哲郎 松島
安藤　文郎
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Toshiba Corp
Original Assignee
Toshiba Corp
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 by Toshiba Corp filed Critical Toshiba Corp
Priority to JP58044713A priority Critical patent/JPS59169334A/ja
Publication of JPS59169334A publication Critical patent/JPS59169334A/ja
Publication of JPH0515134B2 publication Critical patent/JPH0515134B2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Emergency Protection Circuit Devices (AREA)
  • Supply And Distribution Of Alternating Current (AREA)
JP58044713A 1983-03-17 1983-03-17 インピ−ダンス変化率継電器 Granted JPS59169334A (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP58044713A JPS59169334A (ja) 1983-03-17 1983-03-17 インピ−ダンス変化率継電器

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP58044713A JPS59169334A (ja) 1983-03-17 1983-03-17 インピ−ダンス変化率継電器

Publications (2)

Publication Number Publication Date
JPS59169334A true JPS59169334A (ja) 1984-09-25
JPH0515134B2 JPH0515134B2 (2) 1993-02-26

Family

ID=12699057

Family Applications (1)

Application Number Title Priority Date Filing Date
JP58044713A Granted JPS59169334A (ja) 1983-03-17 1983-03-17 インピ−ダンス変化率継電器

Country Status (1)

Country Link
JP (1) JPS59169334A (2)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01238417A (ja) * 1988-03-17 1989-09-22 Hitachi Ltd 三相交流回路の脱調検出デイジタルリレー

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57142125A (en) * 1981-02-25 1982-09-02 Tohoku Electric Power Co Digital protection relay display unit
JPS57154699A (en) * 1981-03-03 1982-09-24 Tektronix Inc Sample-holding circuit

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57142125A (en) * 1981-02-25 1982-09-02 Tohoku Electric Power Co Digital protection relay display unit
JPS57154699A (en) * 1981-03-03 1982-09-24 Tektronix Inc Sample-holding circuit

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01238417A (ja) * 1988-03-17 1989-09-22 Hitachi Ltd 三相交流回路の脱調検出デイジタルリレー

Also Published As

Publication number Publication date
JPH0515134B2 (2) 1993-02-26

Similar Documents

Publication Publication Date Title
CA2452378C (en) System for estimating the frequency of the power signal on a power transmission line
Redfern et al. Protection against loss of utility grid supply for a dispersed storage and generation unit
EP3484000A1 (en) Power grid stabilization system and stabilization method
JP2003070151A (ja) 保護継電装置
GB2373586A (en) Locating a fault on a transmission line with a tapped load
EP2328249B1 (en) Reclosing method for electrical power transmission line
JPS59169334A (ja) インピ−ダンス変化率継電器
JP6385291B2 (ja) 保護リレー装置
JPS62110168A (ja) デイジタル故障点標定装置
CN112993940A (zh) 基于温升跟踪有准确热记忆的电机热过载保护方法及装置
JP6397249B2 (ja) 電力システムにおける動揺角推定のためのシステムおよび方法
EP1311866A1 (en) Current compensation method and device for power system protection
US6298309B1 (en) Current based frequency tracking method and apparatus
JPS60148332A (ja) インピ−ダンス変化率継電器
JP4191582B2 (ja) 交流電圧低下検出装置
JPH1146447A (ja) 電力系統の周波数維持システム
JPH0135576B2 (2)
KR20070094161A (ko) 이동 평균을 이용한 새그 및 스웰의 검출 방법
JP2007068325A (ja) 電流差動リレー装置
CA2406313C (en) Method and device for power system protection
JPS61106027A (ja) 系統安定化装置
JP2757230B2 (ja) 母線保護継電装置
CN100442619C (zh) 船用发电机保护和同步设备
JP2527147B2 (ja) 変圧器の過負荷保護継電方法
JPS62290318A (ja) デイジタル保護制御装置