Against the load optimal distribution problems in power plants after dedusting

desulfurization

and denitrification

a whole plant load distribution model considering environmental cost and a controllable exploration particle swarm optimization(PSO-CE)algorithm satisfying the real-time request of power dispatching were proposed

from the aspect of improving the plant comprehensive economic benefit.The net coal consumption characteristic model and the multiple contaminants emission concentration characteristic model were constructed on the basis of the unit actual operating data.Then

the load distribution model for optimal comprehensive economic benefit and the self-adaptive load constraint condition were established

based on the dedusting

desulfurization

and denitrification compensation electricity price and the standard expense of pollutants emission.Moreover

the velocity factor of controllable random exploration and maximum velocity limiting factor of dynamic adjustment were introduced to the standard particle swarm optimization algorithm to balance the computing cost and search ability.Simulations on the load distribution of a power plant with 4units reveal the validity of the proposed method.