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AC current and voltage synchronous sampling system and sampling method

A technology of voltage synchronization and alternating current, applied in the direction of measuring current/voltage, electric vehicles, electrical devices, etc., can solve problems such as inability to achieve synchronous sampling, sampling out of synchronization, etc.

Inactive Publication Date: 2018-10-02
国网江西省电力有限公司电力科学研究 +2
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The traditional AC current and voltage sampling is directly asynchronous sampling. Due to the different properties of the components, the voltage and current channels have the problem of sampling asynchrony, especially the voltage and current sampling devices distributed in different places, which basically cannot realize synchronous sampling.

Method used

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  • AC current and voltage synchronous sampling system and sampling method

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Embodiment Construction

[0025] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention.

[0026] Such as figure 1 As shown, the present invention proposes an AC current and voltage synchronous sampling system, including a processing chip, an AC sampling module, a signal conditioning module, and an AC A / D conversion module. The processing chip is connected with a pulse synchronization signal, and the AC sampling module It is connected with the signal conditioning module, and the signal conditioning module is in signal communication with the AC A / D conversion module.

[0027] There are two ranges for voltage sampling, 60V and 100V respectively. It adopts a resistor divider circuit structure, and the range is controlled by a relay. In order to ensure the sampling accuracy, the resistor uses a 5PPM high-precision resistor. The circuit schematic diagram is as follows: f...

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Abstract

The invention provides an AC current and voltage synchronous sampling system and method. The system comprises a processing chip, an AC sampling module, a signal conditioning module and an AC A / D conversion module. A pulse synchronizing signal is connected on the processing chip. The AC sampling module is connected with the signal conditioning module. The signal conditioning module is connected with the AC A / D conversion module in a signaling way. The three-phase AC voltage and current signal quantity values can be synchronously sampled by the module according to the GPS clock; and calculationof the voltage and current effective value and the active power effective value can be realized through the algorithm so that multiple acquisition devices distributed in different places can synchronously acquire and calculate the AC current, voltage, power and electric energy quantity values.

Description

technical field [0001] The invention relates to the technical field of power system detection, in particular to an alternating current and voltage synchronous sampling system and a sampling method thereof. Background technique [0002] The traditional AC current and voltage sampling is directly asynchronous sampling. Due to the different properties of components, the voltage and current channels have the problem of asynchronous sampling. Especially for voltage and current sampling devices distributed in different places, it is basically impossible to achieve synchronous sampling. Contents of the invention [0003] In order to solve the above-mentioned technical problems, the present invention proposes an AC current and voltage synchronous sampling system, including a processing chip, an AC sampling module, a signal conditioning module, and an AC A / D conversion module, and the processing chip is connected with a pulse synchronization signal, The AC sampling module is connec...

Claims

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Application Information

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IPC IPC(8): G01R19/25G01R21/133G01R21/00G01R22/10
CPCG01R19/2509G01R19/2513G01R21/002G01R21/1331G01R22/10
Inventor 裴茂林黄洋界熊茹范亚军许继和严勤胡兴汪洁胡志强
Owner 国网江西省电力有限公司电力科学研究
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