JPS55112575A - Faulty point ranging unit - Google Patents
Faulty point ranging unitInfo
- Publication number
- JPS55112575A JPS55112575A JP1974079A JP1974079A JPS55112575A JP S55112575 A JPS55112575 A JP S55112575A JP 1974079 A JP1974079 A JP 1974079A JP 1974079 A JP1974079 A JP 1974079A JP S55112575 A JPS55112575 A JP S55112575A
- Authority
- JP
- Japan
- Prior art keywords
- faulty point
- impedance
- distance
- faulty
- ranging unit
- 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
- Locating Faults (AREA)
- Emergency Protection Circuit Devices (AREA)
Abstract
PURPOSE: To not only range a faulty point by using the voltage and the current of a transmission line to obtain the impedance to the faulty point but also eliminate the influence of the faulty point resistance in this case to improve a ranging precision.
CONSTITUTION: After sampled at a fixed time interval by circuit 8, the voltage and the current of its own end and the electric place of the other party are subjected to A/D conversion, and these digital values are used to operate the impedance to a faulty point by operation circuit 9. Since the obtained impedance and the distance to the faulty point are proportional to each other, the faulty point is displayed through a conversion circuit, which converts the impedance to a distance, with the absolute of the distance.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1974079A JPS55112575A (en) | 1979-02-23 | 1979-02-23 | Faulty point ranging unit |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1974079A JPS55112575A (en) | 1979-02-23 | 1979-02-23 | Faulty point ranging unit |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS55112575A true JPS55112575A (en) | 1980-08-30 |
Family
ID=12007725
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP1974079A Pending JPS55112575A (en) | 1979-02-23 | 1979-02-23 | Faulty point ranging unit |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS55112575A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS57153270A (en) * | 1981-03-18 | 1982-09-21 | Mitsubishi Electric Corp | Fault point ranging device |
-
1979
- 1979-02-23 JP JP1974079A patent/JPS55112575A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS57153270A (en) * | 1981-03-18 | 1982-09-21 | Mitsubishi Electric Corp | Fault point ranging device |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JPS55112575A (en) | Faulty point ranging unit | |
JPS527726A (en) | Converting cine camera to television camera by the provision of an ada pter | |
JPS5587961A (en) | System for identifying fault point of power transmission line | |
JPS5224567A (en) | Ampere measuring apparatus | |
JPS531845A (en) | Digital protective relay | |
JPS5357941A (en) | Multiplier using hall element | |
JPS5436556A (en) | Constant current circuit | |
JPS547228A (en) | Pedestal clamp circuit | |
JPS5211968A (en) | Digital power factor measuring apparatus | |
JPS549674A (en) | Digital resistant meter | |
JPS53105109A (en) | Trouble-point ranging system of transmission line | |
JPS5381169A (en) | Direct current measuring apparatus | |
JPS5439559A (en) | Digital analog converter | |
JPS52132763A (en) | Analog digital converter | |
JPS53145041A (en) | Digital protective relay | |
JPS5373176A (en) | Insulation resistance measuring apparatus | |
JPS5422752A (en) | Analog-digital converting device | |
JPS5383046A (en) | Digital protective relay | |
JPS52116851A (en) | Relay device for offset mho | |
JPS53129816A (en) | Constant voltage and frequency power supply | |
JPS5243962A (en) | Digital type protective relay device | |
JPS53114453A (en) | Displacement-digital signal converter | |
JPS52121789A (en) | Rotary connecting device for electric cable | |
JPS52145246A (en) | Slide resistance-electric signal converter | |
JPS52115344A (en) | Digital protective relay device |