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ASDU framing transmission method based on GSP, receiving method and system

A technology of a transmission method and a receiving method, applied in the field of power system automation, can solve the problems of lack of support for ASDU service data frame transmission requirements, failure to provide frame transmission rules and frame identification mechanism, etc., to improve adaptability, broaden The scope of application and the effect of improving operation and maintenance efficiency

Active Publication Date: 2021-07-09
ELECTRIC POWER RES INST OF STATE GRID ZHEJIANG ELECTRIC POWER COMAPNY +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Since the original GSP protocol did not provide frame-by-frame transmission rules and a frame-by-frame identification mechanism, there was a lack of support for ASDU service data frame transmission requirements during data transmission.
Although the next flag is defined in the APCH in the GSP protocol, it can indicate whether there are still subsequent frames, but this method can only be applied to the case where each APDU message can be decoded independently, and still cannot solve the aforementioned problems

Method used

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  • ASDU framing transmission method based on GSP, receiving method and system
  • ASDU framing transmission method based on GSP, receiving method and system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] Embodiment 1 provides a GSP-based ASDU frame transmission method, aiming to realize ASDU frame transmission by adding a service sequence number to the ASDU frame.

[0040] Please refer to figure 1 Shown, a kind of ASDU frame transmission method based on GSP comprises the following steps:

[0041] S110. Receive a service request, and read an ASDU frame in the service request;

[0042] The specific content of the above service request will be included in one frame of ASDU frame, and each service request is specifically one frame of ASDU service data; the ASDU frame in the service request usually has no length limit, and when ASDU is transmitting data, the ASDU frame The length is limited. Usually, when the data type information in ASDU is greater than 65531 bytes, it cannot be transmitted in one frame of ASDU message.

[0043] S120. Determine whether the ASDU frame length exceeds the maximum frame length limit:

[0044] When the ASDU frame length is greater than the ma...

Embodiment 2

[0054] Embodiment 2 discloses a receiving method corresponding to the above embodiment of the GSP-based ASDU frame transmission method, which mainly explains and illustrates the specific method of frame receiving.

[0055] Please refer to figure 2 Shown, a kind of ASDU frame receiving method based on GSP comprises the following steps:

[0056] S210. Receive an ASDU frame, and identify the ASDU frame through a service sequence number, and the ASDU frame is an ASDU frame sent by the GSP-based ASDU frame transmission method described in Embodiment 1;

[0057] S210 After receiving the ASDU frame, a buffer area may be established for the ASDU frame according to the service sequence number. In this way, the framed data can be stored in the buffer area before the framed message transmission is completed, so that after the subsequent data reception is completed, the complete ASDU frame data corresponding to the service sequence number is taken out for decoding and processing; in add...

Embodiment 3

[0065] The third embodiment mainly explains and illustrates the system of the application of the first and second embodiments.

[0066] Specifically, a GSP-based ASDU frame transmission receiving system, which includes:

[0067] The processing end is used to receive and process the sending request, and implement the GSP-based ASDU framing transmission method described in Embodiment 1 when processing the sending request;

[0068] The receiving end is configured to receive the processed service request, and implement the GSP-based ASDU frame receiving method described in Embodiment 2 when receiving.

[0069] It should be noted that the above-mentioned processing end and the sending end may co-exist in a server.

[0070] Wherein, the above-mentioned GSP-based ASDU frame transmission method comprises the following steps:

[0071] Receive a service request, and read the ASDU frame in the service request;

[0072] Determine whether the ASDU frame length exceeds the maximum frame ...

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Abstract

The invention discloses an ASDU framing transmission method based on a GSP, and relates to the field of power system automation, and the method is used for solving the problem that framing transmission is difficult to carry out in the prior art. The method comprises the following steps: judging whether the ASDU frame length exceeds the maximum frame length limit or not: when the ASDU frame length is greater than the maximum frame length limit, splitting an ASDU frame into a plurality of framing messages, and adding a service sequence number and an APCH for each framing message to obtain a framing message to be sent; and sequentially sending the framing messages to be sent. The invention also discloses an ASDU framing receiving method based on the GSP and a system. According to the invention, the ASDU framing transmission capability is increased on the basis of the GSP, and the ASDU framing transmission requirement is met.

Description

technical field [0001] The invention relates to the field of power system automation, in particular to a GSP-based ASDU frame transmission method, receiving method and system. Background technique [0002] The general service protocol for electric powersystem (GSP for short) standard through the establishment of a unified general service mechanism makes common communication protocols compatible. It provides effective support for the predefined and customized service data interaction requirements between users. GSP also has a data unit that supports class description information, and realizes the function of dynamically defining and identifying data in the process of data interaction. In addition, GSP also has the ability to exchange data type information between the two communicating parties before transmitting data. The data receiver needs to describe the received data according to the data type description of the sender, so as to correctly parse the received specific dat...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L1/00
CPCH04L1/0007H04L1/0009
Inventor 罗华峰阮黎翔黄晓明陆承宇王松吴俊盛海华孙珂杜奇伟王丽华丁峰沈奕菲戚宣威陈明方芳孙文文王周虹刘永新张超郑翔杨力强鲍云龙杨斌房同忠谭燕
Owner ELECTRIC POWER RES INST OF STATE GRID ZHEJIANG ELECTRIC POWER COMAPNY
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