Abstract:

In order to reduce the energy cost of thermal power plants,the architecture of a real.time optimized dispatching software system based on SIS(Supervisory Information System)platform is presented for unit load,in which the tight integration of SIS and MIS(Management Information System)and the auto-dispatching of the load are implemented.The real-time characteristic curves describing the energy cost of each unit are then simulated by the on-line collection and economic calculation of the operating data,with a mathematical model of load dispatching being set up.According to the proposed model,the optimized dispatching of the load is realized via the layered fuzzy genetic algorithm.Moreover,the corresponding dispatching software system is designed and implemented based on the Microsoft.NET Framework and the multi-layer Browser/Server concept.As compared with the traditional onduty dispatching mode,the proposed softwaFe helps decrease the power-supply coal cost rate by 0.5 g/(kW ·h), thus reducing the energy cost.

Key words: thermal power plant, load, optimized dispatching, supervisory information system , layered fuzzy ge-netic algorithm