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Data acquisition system of reconfigurable static state reactive-load compensation/DC de-icing composite apparatus

A data acquisition system and DC ice-melting technology, applied in the direction of measuring devices, signal transmission systems, non-electrical signal transmission systems, etc., can solve the problems of increasing the difficulty of system design and the limitation of space location arrangement, and achieve the reduction of quantity and circuit Realize the effect of simplicity and high measurement accuracy

Inactive Publication Date: 2009-02-18
CHINA ELECTRIC POWER RES INST +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Since the primary equipment and the central control unit use electrical coupling or electromagnetic coupling, there is an insulation problem between the primary equipment and the measurement secondary equipment. At the same time, the designed data acquisition system is required to have a strong anti-interference ability, which increases the system design. difficulty
In addition, the conditioning unit and the central control unit need to be arranged close to each other, and the spatial arrangement is limited.

Method used

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  • Data acquisition system of reconfigurable static state reactive-load compensation/DC de-icing composite apparatus
  • Data acquisition system of reconfigurable static state reactive-load compensation/DC de-icing composite apparatus
  • Data acquisition system of reconfigurable static state reactive-load compensation/DC de-icing composite apparatus

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Embodiment Construction

[0025] As shown in FIG. 1, this embodiment includes a signal conditioning unit (A), an analog-to-digital conversion and data transmission conversion unit (B), a data summary unit (C), and a synchronous sampling pulse signal generation unit (D). The function to be completed by the data acquisition system is to perform analog-to-digital conversion of the multiple analog output from the PT / CT on the primary side under the synchronization of the synchronous sampling pulse signal, and send the digitized measurement results to the synchronous serial port protocol through two optical fibers. The ground control center under the platform.

[0026] Figure 1 (B) is a block diagram of the analog-to-digital conversion part, which is composed of multiple analog-to-digital conversion parts and a central control part. Refer to Figure 2 for the circuit diagram of the analog-to-digital conversion part. The measured AC analog input terminal enters the input terminal of the analog-to-digital converte...

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Abstract

The invention provides a data-collecting system of a reconfigurable static reactive power compensation / DC deicing compound device, which comprises an analog parameter measuring equipment at one side of the electric system, an A / D conversion unit, a data collecting transmission unit, and a synchronous-sampling pulse signal generating unit; wherein, each channel of the A / D conversion unit can synchronously start the A / D conversion process through the synchronous-sampling pulse signal sent by the synchronous-sampling pulse signal generating unit, the central control part of the A / D conversion unit can monitor the A / D conversion process of each channel of the A / D conversion part, the data resulting from each channel can be read in the central control part after the conversion is finished, the central control part can pack the data according to special communication protocol and send the data to a data gather unit through a synchronous serial port, wherein, the data at the synchronous serial port is transmitted through optical signal. The system has high precision and strong anti-interference capability, can reduce the land occupation and cost of the test equipment, and can also achieve synchronous measurement for multi-channel AC / DC analogue quantity in the power system.

Description

Technical field [0001] The invention belongs to the technical field of power electronics applications, and mainly relates to a data acquisition system of a reconfigurable static reactive power compensation (SVC) / DC ice melting compound device. Background technique [0002] In order to solve the losses caused by the icing disaster of transmission lines, a lot of analysis and research work has been carried out on the melting of ice on transmission lines at home and abroad. Among them, the DC ice melting scheme based on power electronic rectification technology has a very wide range of development and application space. Its main principle is to use the ice-coated line as a load, apply a DC power supply, and use a lower voltage to provide a DC current to heat the wire to melt the line. [0003] Since the time and frequency of ice disasters are relatively small, special DC ice melting equipment is less economical. In order to improve the utilization of equipment, a reconfigurable powe...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R31/00G08C23/06
Inventor 柴斌王宇红詹雄荆平徐桂芝
Owner CHINA ELECTRIC POWER RES INST
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