JPS6447963A - Tester - Google Patents
TesterInfo
- Publication number
- JPS6447963A JPS6447963A JP20421487A JP20421487A JPS6447963A JP S6447963 A JPS6447963 A JP S6447963A JP 20421487 A JP20421487 A JP 20421487A JP 20421487 A JP20421487 A JP 20421487A JP S6447963 A JPS6447963 A JP S6447963A
- Authority
- JP
- Japan
- Prior art keywords
- circuit
- current
- fault current
- simulation
- component
- 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
- 238000004088 simulation Methods 0.000 abstract 5
- 230000005415 magnetization Effects 0.000 abstract 4
- 230000004907 flux Effects 0.000 abstract 3
- 230000004069 differentiation Effects 0.000 abstract 1
- 230000010354 integration Effects 0.000 abstract 1
Landscapes
- Testing Electric Properties And Detecting Electric Faults (AREA)
Abstract
PURPOSE:To enable freely variable setting of magnetization characteristic of a current transformer, by generating a simulation signal of a magnetic flux corresponding to a fault current containing a DC component as flowing into the primary side of the current transformer with a first circuit while the current is made to correspond to the magnetization characteristic with a second circuit. CONSTITUTION:A tester 1 is made up of a setting section 10, a simulation circuit 20 for magnetic flux, a secondary current waveform simulation circuit 30. Here, the circuit 20 comprises an AC component fault current generating section 201, a DC component fault current generating section 202, an addition circuit 203 and an integration circuit 204 and the circuit 203 adds up an AC component fault current and a DC component fault current having attenuation characteristic to generate a fault current waveform, which is integrated with the circuit 204 to obtain a simulation signal of a magnetic flux which is induced in the core of a current transformer when there is no magnetic saturation. The circuit 30 simulates non-linearity of magnetization characteristic with a non-linearity simulation circuit 301 and differentiates it with a differentiation circuit 302 to take out a secondary current waveform. This enables freely variable setting of the magnetization characteristic of the current transformer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP20421487A JPS6447963A (en) | 1987-08-19 | 1987-08-19 | Tester |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP20421487A JPS6447963A (en) | 1987-08-19 | 1987-08-19 | Tester |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6447963A true JPS6447963A (en) | 1989-02-22 |
Family
ID=16486725
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP20421487A Pending JPS6447963A (en) | 1987-08-19 | 1987-08-19 | Tester |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6447963A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102545156A (en) * | 2012-01-13 | 2012-07-04 | 中国电力科学研究院 | Exciting current emulation calculating method and device at time of direct-current magnetic biasing |
| CN103389422A (en) * | 2013-07-19 | 2013-11-13 | 国家电网公司 | Method for detecting non-fault phase busbar differential protection maloperation cause during circuit reclosing period |
-
1987
- 1987-08-19 JP JP20421487A patent/JPS6447963A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102545156A (en) * | 2012-01-13 | 2012-07-04 | 中国电力科学研究院 | Exciting current emulation calculating method and device at time of direct-current magnetic biasing |
| CN102545156B (en) * | 2012-01-13 | 2014-10-22 | 中国电力科学研究院 | Exciting current emulation calculating method and device at time of direct-current magnetic biasing |
| CN103389422A (en) * | 2013-07-19 | 2013-11-13 | 国家电网公司 | Method for detecting non-fault phase busbar differential protection maloperation cause during circuit reclosing period |
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