Online bidirectional monitoring and analysis method of power system full channel based on promiscuous mode

Abstract

The invention discloses an online bidirectional monitoring and analysis method of a power system full channel based on the promiscuous mode, comprising the following steps: 1) setting a port of a switch in which the channel is located as a mirroring port and mirroring the received and transmitted data at other ports to the mirroring port; 2) connecting a computer network card in which online bidirectional monitoring and analysis software is located to the mirroring port of the prepositive switch; 3) the online bidirectional monitoring and analysis software setting the network card in the promiscuous mode and monitoring the received and transmitted messages on all the channels on the prepositive switch; 4) analyzing the source IP addresses and the destination IP addresses of the messages and distinguishing transmitting from the master station from transmitting from the plant station according to the source IP and the destination IP; and 5) interpreting and analyzing the monitored messages according to the corresponding protocols, wherein the switch is the prepositive switch or data acquisition switch. By the method, uplink and downlink simultaneous monitoring of all the special channels can be realized by only one computer with the network card and uplink and downlink online simultaneous monitoring of all the network channels can be realized.

Description

technical field [0001] The invention relates to an all-channel transparent online two-way monitoring analysis method of a power system, which belongs to the technical field of power system automatic control. Background technique [0002] With the rapid development of power systems, the correctness of basic data and the integrity of protocol processing become more and more important. At present, there are also many tool software developed to analyze and process the communication protocols between the two parties. However, the test of the protocol is generally an offline test, which is often used before the equipment is put into operation and acceptance. However, in most cases, the physical examination of the system that has been put into operation and the analysis of the real-time operation are more important for fault location in the communication process. , the demand is even stronger. There is an urgent need for transparent monitoring and analysis software that does not a...

AI Technical Summary

Problems solved by technology

[0003] According to the search results, it is found that there is no complete online analysis and monitoring software for all channels (including network channels and private line channels) in China, and the existing similar software in China faces three problems: 1. Only through the uplink on the link 1. Downlink parallel connection for online monitoring and analysis of dedicated line channels; 2. For dedicated line channel monitoring, only one direction can be monitored at the same time, uplink or downlink, and uplink and downlink cannot be monitored at the same time; When the level is low, parallel connection will increase the attenuation, which may affect the communication of the actual channel; 4. When a large number of channels are monitored at the same time, the support of serial port expansion devices such as multi-serial port cards or terminal servers is required, which is harmful to the hardware. High requirements; 5. It is impossible to monitor the network channel online. For the analysis of the network channel, the only way to analyze the network channel is to disconnect the original communication, replace the role of a certain party, and conduct offline communication analysis, and the communication process of the actual communication parties cannot be obtained.

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