Optimal power flow problem with considering CO2 emission in
power system <Abstract> Recently, Japan start to think whether nuclear power is the right energy source in safety aspect because of the Great East Japan Earthquake in 2011. Therefore, Distributed Generators(DGs) are attracted attention because DGs use renewable energies and high safety is achieved by DGs which aren't using nuclear power. In addition, DGs have the advantage that CO2 emission is low compared with conventional power generator. Therefore, the CO2 emission cost of DGs is low compared with conventional power generators one. However, power-generation cost of DGs is high compared with conventional power generator one. Thus, it is important to think CO2 emission by generating power in modern power system. This paper presents a new idea that takes into account of the CO2 emission cost in modern power system, which include DGs and conventional power generator. It is assumed that the power system has several DGs and output powers of them can be controlled. The purpose of the optimization is to minimize an objective function, which consists of power-generation cost, the CO2 emission cost, bus-voltage deviations and power loss. By carrying out simulations in various situations, it is shown that the need for optimization in the case of considering CO2 emission in modern power system. |