Abstract :
A cogeneration power plant simultaneously converts fossil energy into heat and electricity. Its efficiency is comparable to that of a boiler. However, its conversion is more economical, since part of the output energy represents high-valued electricity. The author details how he has developed a novel concept in order to optimize the use of fossil energy while minimizing the emission of pollutants. The cogeneration power plant is equipped with a heat buffer. During the daily electrical load peak it is electrically, else thermally controlled. Thus, energy storage and transport are performed in the physically most adequate form, viz. in the heat buffer and in the electrical power system respectively. The power system transports the energy to two types of consumers whose peak loads appear at different times of the day: first to thermal consumers with electrical heat pumps equipped with a short term buffer which make use of the environmental heat; and second to electrical consumers for whom it acts as peak power plant. The stability criterion for connecting a plant to the power system is derived
