Startup and Shutdown Problem of Thermal Generating Units with Constrained Total Nitrogen Oxides Emissions （Part l）

This paper presents a scheduling method for thermal generating units, that will control the total nitrogen oxides emissions via generation shifting and operative pattern changing. This method, of course, can be used ordinarily, ,moreover during a shortage of available low pollution fuel. We have found that in the USA this low pollution fuel became extremely expensive and supplies became uncertain in about 1965. Futher-more we can use this method when the nitrogen oxides removal systems require much time for their design, construction and testing before they can be brought online. By this method, we can decide the units commitment and schedule their output so as to comply with constrained nitrogen oxides emissions, and simultaneously economic optimum operation win be achieved