Improvement of Conventional Power Plants Behaviour by Qualified Maintaining of Plant Systems at Optimal Conditions by Control System Completed by on the Simulation Based Operator Support System

摘要

The paper presents the software based supervising plant control system, which provided the operator and management with recommendation for optimal plant operational mode adjustment and for long time scale plant operation. Further the system provides data and inputs for additional manual control and for manual adjustment of the system parameters. The purpose of the developed supervising system is to optimise the operation of the power plant. In case of boiler the system provides recommendation for the air control and distribution for attaining minimal thermal losses, harmonious burning and maintaining the emissions at required values. In case of the steam water circuit and attached technological equipment the system evaluated temperature and pressure deviations to expected values and deviations of real operating points to the projected. It evaluates simultaneously their probable caused and impacts on the total plant efficiency. Implementation of the system in the Czech fossil plant International Power-Opatovice, which resulted in thermal efficiency improvement, is presented.