The Research and Implementation of Intelligent Judgment about Bus Switching Based on the Automation System

The design of the GIS (Gas Insulated Switchgear) equipment fully enclosed, when it reduces the problem of interference caused by the external environment and reduces the substation area, it also makes the operator cannot directly observe the status of the device. When the mechanism box cover of knife switch rust, or internal components of knife switch rust, or the actual switching contacts are not in place, but the knife switch position indicator indicating closing, it will easily cause charged prone to pull the knife switch accident happen, especially in the switching operation of the bus, the problem is more prominent. Aiming at the risk of status of the knife position can go wrong, and combined with the current status of the substation, this paper proposes a technology program of intelligent assist judgment about bus switching based on the automation system, which use bus power balance principle and the principle of the three-phase current balance to achieve GIS knife in the switching operation process to determine the location of the intelligent Assistant. This paper uses historical data of scheduling sequence database and historical data of substation automation system to verify the reliability of the algorithm. The intelligent auxiliary judgment module for bus switching based on this paper has been deployed in many substations and verified through switching operation many times, it has good promotional value.