CN102937665B - 调制式直流电压互感器 - Google Patents
调制式直流电压互感器 Download PDFInfo
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- CN102937665B CN102937665B CN201210444146.6A CN201210444146A CN102937665B CN 102937665 B CN102937665 B CN 102937665B CN 201210444146 A CN201210444146 A CN 201210444146A CN 102937665 B CN102937665 B CN 102937665B
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- voltage
- analog switch
- resistance
- circuit
- pulse generator
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Abstract
Description
线性光耦隔离方式 | 本发明 | |
隔离器件 | 线性光耦,成本高 | 微电流互感器、开关式光耦,成本低 |
测量端辅助电源 | 需要高精度,高电压隔离的稳压电源,成本高、体积大 | 不需要 |
测量端运算放大器 | 由于线性运放的反馈电流很小,只有几微安-几十微安,因此需要低温飘高精度运放,成本高 | 不需要 |
输出端运算放大器 | 由于线性运放的反馈电流很小,只有几微安-几十微安,因此需要低温飘高精度运放,成本高 | 不需要,或普通运算放大器 |
线性度 | 1% | 与微电流互感器有关,0.2-0.5% |
产品一致性 | 线性光耦参数离散性大,通常达到20%,因此每一台设备都需要调整才能达到1%的精度 | 取决于微电流互感器,一般不需要调整即可达到0.5% |
带宽 | 0-200K | 0-20K |
Claims (3)
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CN201210444146.6A CN102937665B (zh) | 2012-11-08 | 2012-11-08 | 调制式直流电压互感器 |
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CN201210444146.6A CN102937665B (zh) | 2012-11-08 | 2012-11-08 | 调制式直流电压互感器 |
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CN102937665A CN102937665A (zh) | 2013-02-20 |
CN102937665B true CN102937665B (zh) | 2015-03-18 |
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CN201210444146.6A Expired - Fee Related CN102937665B (zh) | 2012-11-08 | 2012-11-08 | 调制式直流电压互感器 |
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Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN103487631B (zh) * | 2013-10-10 | 2016-05-11 | 重庆邮电大学 | 一种调制解调型电流传感器 |
CN110868167B (zh) * | 2019-12-02 | 2023-08-25 | 云南电网有限责任公司电力科学研究院 | 直流电压隔离放大器 |
CN113484812B (zh) * | 2021-05-26 | 2023-01-13 | 广西电网有限责任公司南宁供电局 | 一种电容式电压互感器的测量装置及测量方法 |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
IT1289479B1 (it) * | 1996-01-26 | 1998-10-15 | Schlafhorst & Co W | Disposizione circuitale di trasformazione di tensione per la alimentazione energetica di un utilizzatore elettrico di elevata |
CN2523107Y (zh) * | 2001-11-19 | 2002-11-27 | 顺德市华傲电子有限公司 | 直流高压电源的电压取样装置 |
JP2007068349A (ja) * | 2005-08-31 | 2007-03-15 | Tdk Corp | スイッチング電源装置 |
CN102611314A (zh) * | 2012-03-16 | 2012-07-25 | 南通金枫电气有限公司 | 一种电压反馈隔离电路 |
CN102624244B (zh) * | 2012-04-21 | 2014-04-16 | 桂林理工大学 | 一种高隔离度可调直流稳压电源的实现方法 |
CN202854213U (zh) * | 2012-11-08 | 2013-04-03 | 温州大学 | 调制式直流电压互感器 |
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Application publication date: 20130220 Assignee: Yueqing Institute of industry, Wenzhou University Assignor: Wenzhou University Contract record no.: X2020330000105 Denomination of invention: Modulated DC voltage transformer Granted publication date: 20150318 License type: Common License Record date: 20201125 |
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