SU842999A1 - Device for correcting error of single-step current transformer - Google Patents
Device for correcting error of single-step current transformer Download PDFInfo
- Publication number
- SU842999A1 SU842999A1 SU782686160A SU2686160A SU842999A1 SU 842999 A1 SU842999 A1 SU 842999A1 SU 782686160 A SU782686160 A SU 782686160A SU 2686160 A SU2686160 A SU 2686160A SU 842999 A1 SU842999 A1 SU 842999A1
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- SU
- USSR - Soviet Union
- Prior art keywords
- resistor
- input
- amplifier
- integrator
- parallel
- Prior art date
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Description
1one
Изобретение относитс к электрб технике, в частности к электроизмерительной технике,и может быть использовано в релейной защите.The invention relates to electrical engineering, in particular to electrical measuring equipment, and can be used in relay protection.
Известно устройство дл компенсации погрешности трансформатора тока (ТТ), содержащее дополнительный трансформатор тока, включаемый в ту же первичную цепь, что и компенсируемый трансформатор тока Tl A device for compensating the error of a current transformer (CT) is known, which contains an additional current transformer included in the same primary circuit as the compensated current transformer Tl
Однако известное устройство дорого и не обеспечивает достаточной точности.However, the known device is expensive and does not provide sufficient accuracy.
Наиболее близким техническим решением к предлагаемому вл етс устройство, содержащее резистор, подключаемый во вторичную цепь трансформатора тока последовательно,интегрот сумматор, вход которого .подключен параллельно резистору, , нелинейный функциональный преобразователь , вход которого подключен к выходу интегро-сумматора , усилительIсумматор , один из входов которогоThe closest technical solution to the present invention is a device containing a resistor connected in series to the secondary circuit of a current transformer in series, an integrat adder, the input of which is connected in parallel to the resistor, a nonlinear functional converter whose input is connected to the output of an integrator, an amplifier I-adder, one of the inputs whom
подключен параллельно резистору,BTO-I рой .вход соединен с выходом нелинейного функционального преобразовател } ..connected in parallel to the resistor, BTO-I swarm. The input is connected to the output of a non-linear functional converter}.
к недостаткам устройства относ тс зависимость точности от степени нелинейности сопротивлени нагрузки; необходимость изменени коэффициентов усилени части усилителей при изменении сопротивлени нагрузки,например при включении дополнительных приборов или реле.device disadvantages include the dependence of accuracy on the degree of non-linearity of the load resistance; the need to change the gains of a part of the amplifiers when the load resistance changes, for example, when additional devices or relays are turned on.
Устройство реализует систему управленииThe device implements the control system
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Claims (2)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SU782686160A SU842999A1 (en) | 1978-11-21 | 1978-11-21 | Device for correcting error of single-step current transformer |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SU782686160A SU842999A1 (en) | 1978-11-21 | 1978-11-21 | Device for correcting error of single-step current transformer |
Publications (1)
Publication Number | Publication Date |
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SU842999A1 true SU842999A1 (en) | 1981-06-30 |
Family
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Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
SU782686160A SU842999A1 (en) | 1978-11-21 | 1978-11-21 | Device for correcting error of single-step current transformer |
Country Status (1)
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SU (1) | SU842999A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE4121654A1 (en) * | 1991-06-29 | 1993-01-07 | Asea Brown Boveri | COMBINED CURRENT AND VOLTAGE CONVERTER FOR A METAL-ENCLOSED GAS-INSULATED HIGH-VOLTAGE SYSTEM |
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1978
- 1978-11-21 SU SU782686160A patent/SU842999A1/en active
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE4121654A1 (en) * | 1991-06-29 | 1993-01-07 | Asea Brown Boveri | COMBINED CURRENT AND VOLTAGE CONVERTER FOR A METAL-ENCLOSED GAS-INSULATED HIGH-VOLTAGE SYSTEM |
US5432438A (en) * | 1991-06-29 | 1995-07-11 | Asea Brown Boverti Ltd. | Combined current and voltage transformer for a metal-enclosed gas-insulated high-voltage switching station |
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