Method and device for compressing data frames of substation

A compression method and compression device technology, applied in the field of substations, can solve the problems of not being able to balance compression efficiency and compression speed, and occupying a lot of CPU resources

Inactive Publication Date: 2013-01-23
南京航天银山电气有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0013] The embodiment of the present invention provides a method for compressing substation data frames, which aims to solve the problem that the existing lossless compression method takes u

Method used

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  • Method and device for compressing data frames of substation
  • Method and device for compressing data frames of substation
  • Method and device for compressing data frames of substation

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Embodiment 1

[0036] figure 1A flow chart of a method for compressing substation data frames provided in the first embodiment of the present invention is shown. In this embodiment, the sequence of data frames with the same non-valid data is compressed, and the details are as follows:

[0037] In step S11, the data frame sequence of the substation is monitored, and the first data frame in the data frame sequence is stored.

[0038] In this embodiment, it is detected whether the substation data frame sequence is received, such as detecting whether the IEC61850 data frame sequence is received, and if the first data frame is received, the data frame is directly stored, including storing the frame number of the data frame, Non-valid data and sampled data, etc.

[0039] In step S12, it is judged whether the non-valid data of the current data frame is the same as the non-valid data of the previous data frame, if yes, obtain and store the data difference between the current data frame and the prev...

Embodiment 2

[0060] figure 2 A structural diagram of the apparatus for compressing substation data frames provided by the second embodiment of the present invention is shown, and for convenience of description, only parts related to this embodiment are shown.

[0061] The compression device of the substation data frame can be used for various information processing terminals connected to the server through a wired or wireless network, such as computers, notebook computers, etc., which can be software units, hardware units or a combination of software and hardware running in these terminals The unit can also be integrated into these terminals as an independent pendant or run in the application system of these terminals, where:

[0062] The first data frame storage unit 21 is used for monitoring the data frame sequence of the substation, and storing the first data frame in the data frame sequence.

[0063] In this embodiment, directly storing the first substation data frame received includ...

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Abstract

The invention is applicable to the field of substations and provides a method and a device for compressing data frames of a substation. The method comprises the following steps of: monitoring a data frame sequence of the substation, and storing the first data frame in the data frame sequence; performing the following steps sequentially on the rest data frames in the data frame sequence: judging whether the non-valid data of the current data frame are the same as the non-valid data of the previous data frame; and acquiring and storing the data difference between the current data frame and the previous data frame if yes; and directly storing the current data frame if no. According to the method and the device, the CPU resources can be effectively saved, the method is simple, and the compression efficiency is improved when the compression speed is increased.

Description

technical field [0001] The invention belongs to the field of substations, in particular to a method and device for compressing substation data frames. Background technique [0002] IEC61850 is a new generation of international standards for substation automation systems. The "Substation Communication Network and System" series of standards formulated by the International Electrotechnical Commission (IEC) TC57 Working Group is the only international standard for substation automation systems based on network communication platforms. [0003] Substation data frames mainly include IEC61850-9-1 data frames and IEC61850-9-2 data frames. [0004] The mapping method of the IEC61850-9-1 data frame is relatively fixed and simple, and follows the setting of the merging unit in the IEC60044-7 / 8 standard, such as using 12 input channels, a dedicated data set, and a fixed frame format. Control services such as "GetMSVCBValues / SetMSVCBVlaues" and services such as direct access to data ob...

Claims

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Application Information

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IPC IPC(8): H03M7/30
Inventor 严永生钱阳冬
Owner 南京航天银山电气有限公司
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