Cost Optimization Depending on Load Compositions in Isolated Wind Diesel Based Multi Units System
Public Private Partners (PPPs) have to be competitive in electricity market by deciding economic tariffs not only for power consumption but for several ancillary services too. The procurement of reactive power, as an ancillary service for voltage control especially in isolated power systems, involves cost investment and thus needs to be remunerated. The reactive power demands for different load compositions are different so their remuneration rates must also be different. Role of static compensation along with dynamic compensation becomes important in reducing the overall compensation cost. Since the participation of static compensator degrades the voltage profile so its involvement with dynamic compensation must be optimized by keeping the system voltage response within its pre decided range of performance. The main contributions of this paper are; (i) Development of reactive power balancing model in isolated wind diesel based multi units system, (ii) Optimization for reactive power compensation participations keeping voltage response in its pre decided transient parameters, and (iii) Cost analysis for reactive power compensation in system for different load compositions.
