The Application and Accident Precontrol of VM600 Type TSI System on 1000MW Unit

Turbine Supervisory Instrument (TSI) system is not reliable and the problems in measurement system influencing the safe and stable operation of the unit seriously, caused unit tripping accident repeatedly. In order to prevent similar incidents occur in 1000MW ultra supercritical unit of second phrase in Taishan Power Plant, Thermal professional investigated, summarized and put forward the corresponding logic optimization and fault prevention measures for the problems in VM600 type TSI system, and came into effect in capital construction debugging and improved in the subsequent use, achieved good results. It was introduced in this paper for the colleagues to reference.