天然气在分布式能源系统中的应用

随着以大机组、大电厂、大电网等为主要特征的第一代能源系统在能源、环境及供电可靠性等方面存在的问题不断显现，以分散化、小型化、高供电可靠性、高环保水平和能源利用率为特征的第二代能源系统正在引起人们的关注。文章介绍了作为第二代能源系统的分布式能源系统的优势和当前分布式能源系统的主要形式，以及以天然气为燃料的活塞式内燃机、微型燃气轮机、工业燃气轮机、各种燃料电池及其混合系统等设备为主体的分布式能源系统的组成、流程、效率和环保水平等特点，分析了以天然气为燃料的分布式能源系统在我国当前的能源形式下的发展优势。

APPLICATION OF NATURAL GAS IN DISTRIBUTED ENERGY SYSTEM

As the defects of the first generation of energy system, which is characterized by the large unit group, the big power plant and the big power network etc., appear constantly, the second generation of energy system, which is characterized by the divergence, the miniaturization, the high power supplying reliability, the high level of environment protection, and high energy-using efficiency, is being paid more attention by the people. The article introduces the advantages of the distributed energy system as the second generation of energy system, the current main forms of the distributed energy system, and the characteristics of composition, process flow, efficiency, and environment level etc. of the distributed energy system whose main devices include piston internal combustion engines, gas micro-turbines, industrial gas turbines, various fuel cells and mixed systems with gas as fuel. The developing prospect of the distributed energy system with gas as fuel under the current energy form in China is analyzed.