The research of the energy characteristics of cogeneration power plant in a changing fuel quality

Due to the imperfection of technological production, many industrial enterprises have gaseous side products, which are secondary energy resources. The use of such gases as fuel for power plants of these companies is an important task of energy saving. This article discusses the use of process gases and gases of artificial origin as a fuel for cogeneration power plants based on gas turbine engine. The use of fuels in cogeneration power plants will reduce the cost of production by reducing fuel costs. However, the use of such gas as the primary fuel for power plants is complicated by the fact that the lowest heat of combustion of these gases can vary significantly and thus introduce considerable disturbances in the operation of power plants. The analysis of influence of change of net calorific value of the considered gases on the energy characteristics of the heat engine cogeneration power plant and defines the acceptable limits of change of net calorific value of fuel. The structure of the automatic control system and control method of power gas-turbine installations due to the flow distribution of primary and secondary air in the combustion chamber. In the circuit controlling the temperature of the gases at the outlet from the combustion chamber of the gas turbine installation input signal derived from the temperature of the gases at the outlet from the combustion chamber. The use of this signal greatly improves the quality of control of the load of the gas turbine, particularly at lower net calorific value of fuel.