High-potential current real-time detection device

A real-time detection, high-potential technology, applied in the direction of using digital measurement technology for measurement, etc., to achieve the effects of fast calculation speed, convenient installation and high safety

Inactive Publication Date: 2014-01-29
ZHUZHOU NAT ENG RES CENT OF CONVERTERS
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Problems solved by technology

[0007] The technical problem to be solved by the present invention is: aiming at the technical problems existing in the prior art, the present invention provides a simple and compact structure, low cost, which can make the detected current information strong anti-interference, good real-time and hi...

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  • High-potential current real-time detection device
  • High-potential current real-time detection device

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Embodiment Construction

[0023] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0024] like figure 1 As shown, the high-potential current real-time detection device of the present invention includes a high-potential energy-taking circuit 1, a power supply module 2, a current sensor 3, a signal conditioning circuit 4, an encoding and decoding digital circuit 5, and a photoelectric signal converter 6. The high-potential The energy harvesting circuit 1 directly obtains AC power from the high potential near the detection point, converts it into low-voltage AC, and transmits the power to the power module 2; the power module 2 rectifies and filters the AC power, and outputs high-quality DC power for the data processing center (not shown in the figure) and the current sensor 3; the current sensor 3 transmits the detected signal to the signal conditioning circuit 4, and the signal conditioning circuit 4 outputs the shape...

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Abstract

A high-potential current real-time detection device comprises a high-potential power gaining circuit, a power module, a current sensor, a signal conditioning circuit, a coding and decoding digital circuit and a photoelectric signal converter. The high-potential energy gaining circuit acquires power from high potential near detecting points directly and transmits to the power module after the power in converted into low-voltage alternating current. The power module rectifies the alternating current, filters, and outputs direct current to the current sensor. The current sensor transmits signals to the signal conditioning circuit, and the signal conditioning circuit outputs shaped current signals. The coding and decoding digital circuit converts analog signals into digital signals and codes the signals, and the coded signals are transmitted to a remote control system through the photoelectric signal converter. The device has the advantages of simple and compact structure and low cost, detected current information is high in interference resistance, instantaneity and accuracy, high voltage and low voltage are isolated actually, and using security of a high voltage device is improved.

Description

technical field [0001] The invention mainly relates to the state detection field of a converter in a high-voltage system, in particular to a real-time detection device for a high-potential current. Background technique [0002] At present, the current detection device applied to the converter in the high-voltage system mainly adopts the following two methods: [0003] One is to use the current transformer to measure, and then directly transmit the analog signal to the converter control system through the secondary cable. The disadvantage of this method is that the analog signal is easily disturbed by the external electromagnetic environment when transmitted through a long secondary cable, which reduces the electromagnetic compatibility of the entire control system; at the same time, it is difficult to design the secondary cable inside the converter due to the consideration of insulation , Only by current mutual isolation, effective high and low voltage isolation cannot be a...

Claims

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Application Information

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IPC IPC(8): G01R19/25
Inventor 周方圆黄燕艳罗仁俊蔡蔚胡前邱文俊曹洋龙礼兰吴强涂绍平徐振文韬吴选保张敏张典
Owner ZHUZHOU NAT ENG RES CENT OF CONVERTERS
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