前言发展动力系统和联合动力系统是目前世界上所有主要工业国家在动力建设事业方面的重要政策之一。苏联正在建设欧洲部份的联合动力系统。东欧的社会主义国家亦正在建设国际间的联合动力系统。西欧的若干资本主义国家的动力系统亦正在互相连接起来。动力系统所以得到这样迅速和大规模的发展,主要是因为将各个电厂和小型系统组成动力系统和联合动力 Foreword The development of the power system and the joint power system is one of the most important policies in the power construction industry in all major industrial countries in the world. The Soviet Union is building a partial European joint power system. Eastern European socialist countries are also building an international joint power system. The power systems of several capitalist countries in Western Europe are also interconnected. This rapid and large-scale development of the power system has been mainly due to the combination of power plants and joint power of various power plants and small systems.