Boiler Drum Level Control by Using Wide Open Control with Three Element Control System

The boiler drum level control with DCS in thermal power station, with some modification is taken as a project work and the paper presentation is given below. Steam generation in the boiler is proportional to the power generation by supplying a required steam flow to the turbine. As the steam flow is proportional to the Power generation, always there will be fluctuations in the drum level. If the drum level goes below the desired lower drum level, there will be a every possibility of starvation of water tubes inside the furnace is expected and the boiler may get damaged and if the water level in the drum raises above the desired upper drum level, there will be a carryover of water particles in the dry steam flowing to the turbine and thus the turbine blade damage is expected. In order to meet out the steam requirement , to safeguard the boiler water tubes and to safe guard the turbine blades the boiler drum water level control plays an important role in thermal power station. The main objective of the boiler–turbine system control is to meet the load demand of electric power while maintaining the pressure and water level in the drum within tolerances. The advanced control algorithm is derived for changing function of single element to three element transfer, Which is Wide Fast Combination of batch and continuous type operations such that plant steam load characteristics varies continuously and usually unpredictably. Here we used the wide opening technology for conservation of the energy.