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A data sampling method and a merging unit for data sampling

A data sampling and data technology, applied in the direction of instruments, measuring devices, measuring electronics, etc., can solve problems such as increasing costs, and achieve the effect of reducing the probability of misinterpretation and reducing costs

Active Publication Date: 2019-05-14
XUJI GRP +3
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The purpose of the present invention is to provide a data sampling method and a merging unit for data sampling, which is used to solve the problem of greatly increasing the cost of existing solutions in order to realize the reliability of data sampling

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  • A data sampling method and a merging unit for data sampling

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Embodiment Construction

[0029] The specific embodiment of the present invention will be further described below in conjunction with accompanying drawing:

[0030] Embodiment of a kind of data sampling method of the present invention:

[0031] With the rapid development of microelectronics technology, the prices of high-performance CPU and FPGA chips continue to decrease after mass production, but the performance of CPU and FPGA chips is getting higher and higher. The merging unit can completely choose higher-performance CPU and FPGA chips without increasing the hardware cost to provide more computing performance and logic resources.

[0032] The present invention utilizes the high performance of the CPU and the FPGA chip in the merging unit and the large capacity of the storage device to divide two sets of mutually independent data buffers and logic processing modules in one CPU and FPGA chip, including data analysis, resampling and Data storage simulates dual logical channels A and B for sampling d...

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Abstract

The invention provides a data sampling method and a merging unit for data sampling. The method comprises steps that firstly, two paths of data is verified, after verification passes, the two paths of data is respectively transmitted in positive and negative code formats; the positive and negative code data is respectively analyzed, if the data is valid, the data is stored in a data buffer area; resampling is carried out through two independent logic channels, and the data after resampling is stored to the data buffer area; the data of the data buffer area is sent to a CPU, the data is then verified and analyzed by the CPU, cross verification of the positive and negative code data is carried out, after all verification passes, the data is sent to a protection device. The method is advantaged in that hardware cost of the double configuration merging unit employed for guaranteeing data transmission reliability is reduced, double logic channel transmission of the sampling data is realized, and sampling reliability of the merging unit in high temperature and strong electromagnetic interference severe environments is further improved.

Description

technical field [0001] The invention belongs to the field of design methods for improving the reliable sampling of an intelligent substation merging unit, and in particular relates to a data sampling method and a merging unit used for data sampling. Background technique [0002] The merging unit is an important part of the interface between the analog and electronic transformers and the secondary protection control equipment. It merges and processes the digital quantities output by the electronic current and voltage transformers through the collector, and can also directly process the analog transformers. The analog output of the device is converted and merged, converted into Ethernet data according to the IEC 61850-9-2 standard, and then output to the process layer network or related intelligent electronic devices through optical fibers. The merging unit is the data source of the smart substation, and also the driver for the operation of the bay layer equipment. The stabili...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01R31/00
CPCG01R31/00
Inventor 安永帅李刚杨智德田萍闫志辉赵应兵郑拓夫王晓锋刘晓霞王宏杰
Owner XUJI GRP