JPS6412810A - Monitoring, controlling & protective device for power system - Google Patents

Monitoring, controlling & protective device for power system

Info

Publication number
JPS6412810A
JPS6412810A JP62166393A JP16639387A JPS6412810A JP S6412810 A JPS6412810 A JP S6412810A JP 62166393 A JP62166393 A JP 62166393A JP 16639387 A JP16639387 A JP 16639387A JP S6412810 A JPS6412810 A JP S6412810A
Authority
JP
Japan
Prior art keywords
sampling
pulse
electricity
monitoring
controlling
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
JP62166393A
Other languages
Japanese (ja)
Other versions
JP2625736B2 (en
Inventor
Takeshi Takemura
Takayuki Ono
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.)
Fuji Electric Co Ltd
Original Assignee
Fuji Electric Co Ltd
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 Fuji Electric Co Ltd filed Critical Fuji Electric Co Ltd
Priority to JP62166393A priority Critical patent/JP2625736B2/en
Publication of JPS6412810A publication Critical patent/JPS6412810A/en
Application granted granted Critical
Publication of JP2625736B2 publication Critical patent/JP2625736B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Abstract

PURPOSE:To perform operation without being affected by frequencies, by changing a sampling cycle of an A/D converter section in correspondence to the system frequency. CONSTITUTION:Input quantity of electricity 1 is converted into rectangular waves by a comparator 2. By giving a clock F2 from a reference clock oscillator 4 to a counter 5 through an AND gate 3 controlled by the rectangular waves, the cycle of the quantity of electricity of system is measured. By dividing another reference clock F1 with this numerical output as a division ratio given to a division circuit 6, a pulse proportional to the system frequency can be obtained. This pulse is given to an A/D converter of an analogue input section 8 in a microcomputer as a sampling pulse. Sampling can thus be performed at the same phase without regard to the frequency variation.
JP62166393A 1987-07-03 1987-07-03 Power system monitoring, control and protection equipment Expired - Fee Related JP2625736B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP62166393A JP2625736B2 (en) 1987-07-03 1987-07-03 Power system monitoring, control and protection equipment

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62166393A JP2625736B2 (en) 1987-07-03 1987-07-03 Power system monitoring, control and protection equipment

Publications (2)

Publication Number Publication Date
JPS6412810A true JPS6412810A (en) 1989-01-17
JP2625736B2 JP2625736B2 (en) 1997-07-02

Family

ID=15830586

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62166393A Expired - Fee Related JP2625736B2 (en) 1987-07-03 1987-07-03 Power system monitoring, control and protection equipment

Country Status (1)

Country Link
JP (1) JP2625736B2 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006333619A (en) * 2005-05-26 2006-12-07 Chofu Seisakusho Co Ltd Electric power detection device and private power generation system
CN106405213A (en) * 2016-12-20 2017-02-15 广州擎天实业有限公司 Synchronous signal based voltage and current fast transmitter and the control method thereof
CN106526306A (en) * 2016-12-20 2017-03-22 广州擎天实业有限公司 Fast-response three-phase rectifying bridge output voltage transmitter and control method thereof

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS56150917A (en) * 1980-04-24 1981-11-21 Mitsubishi Electric Corp Input circuit for digital protection relay
JPS6026410A (en) * 1983-07-25 1985-02-09 日新電機株式会社 Sampling device of power system digital relay
JPS60134633A (en) * 1983-11-29 1985-07-17 ア−ルシ−エ−　コ−ポレ−ション Controller for double conversion tuner
JPS6299677A (en) * 1985-10-25 1987-05-09 Kansai Electric Power Co Inc:The Operation control system for variable speed pumping-up power generating system

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS56150917A (en) * 1980-04-24 1981-11-21 Mitsubishi Electric Corp Input circuit for digital protection relay
JPS6026410A (en) * 1983-07-25 1985-02-09 日新電機株式会社 Sampling device of power system digital relay
JPS60134633A (en) * 1983-11-29 1985-07-17 ア−ルシ−エ−　コ−ポレ−ション Controller for double conversion tuner
JPS6299677A (en) * 1985-10-25 1987-05-09 Kansai Electric Power Co Inc:The Operation control system for variable speed pumping-up power generating system

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006333619A (en) * 2005-05-26 2006-12-07 Chofu Seisakusho Co Ltd Electric power detection device and private power generation system
CN106405213A (en) * 2016-12-20 2017-02-15 广州擎天实业有限公司 Synchronous signal based voltage and current fast transmitter and the control method thereof
CN106526306A (en) * 2016-12-20 2017-03-22 广州擎天实业有限公司 Fast-response three-phase rectifying bridge output voltage transmitter and control method thereof

Also Published As

Publication number Publication date
JP2625736B2 (en) 1997-07-02

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