IEC (integrated Ethernet chip) 104 communication host-standby switching method under high redundancy configuration

Abstract

The invention relates to an IEC (integrated Ethernet chip) 104 communication host-standby switching method under high redundancy configuration. A first monitoring system server and a second monitoring system sever which are adopted as monitoring systems of a master station are divided into a host machine and a standby machine; and four ports of the host machine and the standby machine are named as A1, A2, B1 and B2 respectively, wherein, one of the four port is a main port, the other three ports are standby ports, the four ports are peer-to-peer, and the switching sequence of control right isA1,A2, B1, B2, A1, A2..., thereby forming a logical ring. A channel state and a control right belonging state which are needed when the four ports of the monitoring system are switched are obtained from a real time database of the monitoring system, the port is suspended for preset time after the control right is received, and then the control right is switched. Data is all broadcasted firstly and is written into the real time database by a broadcast. The IEC 104 communication SOE (sequence of event) data is ensured to be transmitted in each channel simultaneously by the policy provided by the method under the configuration with two host machines and four channels of the monitoring system, and the consistency and the integrality of the IEC104 communication data can be ensured under all conditions.

Description

technical field [0001] The invention relates to an IEC104 communication main-standby switching method under high redundancy configuration, and belongs to the field of computer monitoring systems of hydropower stations. Background technique [0002] At present, the computer monitoring system of the hydropower station communicates with the peripheral equipment IEC104 in a relatively simple way. Generally, a single-machine dual-channel connection is used. This method is less difficult to implement and runs stably. However, the redundancy is low, and it cannot meet the stability and reliability requirements of the large-scale hydropower station monitoring system. Contents of the invention [0003] The present invention provides an IEC104 communication active / standby switching method under high redundancy configuration, which solves the problem of low redundancy in the case of a single-machine dual-channel connection commonly used in IEC104 communication, which cannot meet the ...

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Problems solved by technology

[0003] The present invention provides an IEC104 communication active / standby switching method under high redundancy configuration, which solves the problem of low redundancy in the case of a single-machine dual-channel connection commonly used in IEC104 communication, which cannot meet the stability and reliability requirements of a large-scale hydropower station monitoring system. asked questions

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