GIS Based Spatial Modelling for Cost Optimized EnergyGeneration from Biomass

摘要

A GIS-based modelling system was developedfor cost optimization of energy generation, andfor sample analyses of the spatial distribution ofbiomass potential from crop residues and agro-industrial waste at block level in Punjab. The interface between GIS and Visual basic was developed for calculating optimized size and location ofprimary collection centres and energy generation centres for biomass management. A non-linear optimization technique using simplex method was adoptedfor cost optimization through coding in GIS- VB interface. Total potential estimate ofbiomass for power generation in Punjab was 30.27 Mt, major contribution being from paddy straw (65.13%), wheat straw (22.73%), paddy husk (8.44%) and cotton stalk (1.88%). Total potential powergeneration from surplus biomass was estimated to be 2000 MW. The biomass intensity of surplus biomass for energy generation varied between 2.25 t.ha~' and 11.07 t.ha'. The total biomass requirement per year for a 10 MW plant was estimated. The biomass management model successfully suggested the location of various power plants and collection centres as also optimised sizes of the collection centres.