天然气发电机组是以天然气等高热值气体为燃料的点火式气体机，主要分为燃气轮机和燃气内燃机两大类，功率覆盖范围从数千瓦至数千千瓦。该设备具有清洁环保、运行可靠、成本低等特点，其碳排放强度约为煤电的一半，适用于油气田及燃气较丰富的地区作为常备或备用电源。天然气发电机组可采用模块化、撬装式或集装箱式设计，便于快速部署与移动，能够利用油田伴生气等废气进行发电，并通过蒸汽联合循环等方式提升能源利用效率，先进机组的非常高电效率可达45%。

Natural gas generator sets are ignition type gas engines that use high calorific value gases such as natural gas as fuel. They are mainly divided into two categories: gas turbines and gas internal combustion engines, with power coverage ranging from several kilowatts to several kilowatts. This equipment has the characteristics of cleanliness, environmental protection, reliable operation, and low cost. Its carbon emission intensity is about half that of coal-fired power, and it is suitable for use as a standing or backup power source in oil and gas fields and areas with abundant gas. Natural gas generator sets can adopt modular, modular or containerized designs, which are easy to deploy and move quickly. They can use associated gas from oil fields and other waste gases to generate electricity, and improve energy utilization efficiency through steam combined cycles and other methods. The highest electrical efficiency of advanced units can reach 45%.

从工作原理来看，天然气发电的核心是将天然气的化学能转化为电能。在燃气轮机发电系统中，空气经压缩机压缩后送入燃烧室，与喷入的天然气混合并燃烧，形成高温高压燃气。具有做功能力的燃气工质进入透平膨胀做功，推动动力叶片高速旋转，带动发电机产生电能。做功后仍有较高温度的燃气排出，这部分余热如果直接排入大气则会造成能量浪费。因此，在先进的联合循环系统中，做功后的高温燃气被引入余热锅炉，将水加热为高温高压蒸汽，再驱动蒸汽轮机进行二次发电。这就是典型的燃气-蒸汽联合循环发电系统的工作原理。在联合循环机组中，空气经压缩机压缩后送入燃烧室，被压缩的空气与喷入的燃料相混合并燃烧形成高温高压燃气，具有做功能力的燃气工质进入透平膨胀做功。

From the perspective of working principle, the core of natural gas power generation is to convert the chemical energy of natural gas into electrical energy. In a gas turbine power generation system, air is compressed by a compressor and sent into the combustion chamber, where it is mixed with injected natural gas and burned to form high-temperature and high-pressure gas. The gas working fluid with the ability to do work enters the turbine to expand and do work, driving the power blades to rotate at high speed and driving the generator to generate electrical energy. After doing work, there is still high temperature gas discharged, and if this waste heat is directly discharged into the atmosphere, it will cause energy waste. Therefore, in advanced combined cycle systems, the high-temperature gas after doing work is introduced into the waste heat boiler to heat water into high-temperature and high-pressure steam, which then drives the steam turbine for secondary power generation. This is the working principle of a typical gas steam combined cycle power generation system. In a combined cycle unit, air is compressed by a compressor and sent into the combustion chamber. The compressed air mixes with the injected fuel and burns to form high-temperature and high-pressure gas. The gas working fluid with the ability to do work enters the turbine to expand and do work.

天然气发电机组的主要设备包括燃气轮机（或燃气内燃机）、发电机、控制系统和辅助设备等。燃气轮机动力装置是燃气轮机及为产生有用动力所必需的全部基本设备。简单循环燃气轮机是非常简单的热力循环形式，循环的非常高温度越率越高，燃气透平的进口温度通常是衡量燃气轮机性能水平的关键特征量。在联合循环配置中，系统主要由燃气轮机、汽轮机、发电机和换热器等组成。做功后仍有较高温度的燃气进入余热锅炉，此时燃气余热使汽水系统的水转变为高温高压蒸汽，具有做功能力的蒸汽工质进入汽轮机膨胀做功。汽轮机排汽经凝汽器冷却为水，再经各级加热器加热后又进入余热锅炉，完成蒸汽循环。

The main equipment of natural gas generator sets includes gas turbines (or gas internal combustion engines), generators, control systems, and auxiliary equipment. The gas turbine power plant is a gas turbine and all the basic equipment necessary to generate useful power. A simple cycle gas turbine is the simplest form of thermodynamic cycle, with higher efficiency as the maximum temperature of the cycle increases. The inlet temperature of a gas turbine is usually a key characteristic for measuring its performance level. In a combined cycle configuration, the system mainly consists of a gas turbine, a steam turbine, a generator, and a heat exchanger. After doing work, there is still high temperature gas entering the waste heat boiler. At this time, the waste heat of the gas converts the water in the steam water system into high-temperature and high-pressure steam, and the steam working medium with work ability enters the turbine to expand and do work. The exhaust steam of the steam turbine is cooled into water by the condenser, and then heated by various heaters before entering the waste heat boiler to complete the steam cycle.

天然气发电具有多项显著优势。热效率方面，目前先进联合循环机组的热效率已超过60%，而简单循环燃气轮机的热效率也已达35%至41.92%。投资方面，天然气发电的单位装机容量所需投资较少，造价相对便宜。建设周期方面，设备由组件构成，重量轻、施工快，一般为火电机组建设周期的43%左右。此外，天然气发电占地面积小，约为燃煤电厂的50%；耗水量也仅为燃煤电厂的30%左右；运行可靠，高度自动化，所需日常运行管理人员仅为一般燃煤电厂的2%。天然气联合循环发电集天然气洁净与联合循环于一身，成为当今世界非常受青睐的实用发电技术之一。

Natural gas power generation has multiple significant advantages. In terms of thermal efficiency, the thermal efficiency of advanced combined cycle units has exceeded 60%, while the thermal efficiency of simple cycle gas turbines has also reached 35% to 41.92%. In terms of investment, the unit installed capacity of natural gas power generation requires less investment and is relatively cheaper in cost. In terms of construction period, the equipment is composed of components, which are lightweight and fast to construct, generally accounting for about 43% of the construction period of thermal power units. In addition, natural gas power generation occupies a small area, about 50% of that of coal-fired power plants; The water consumption is only about 30% of that of coal-fired power plants; Reliable operation, highly automated, requiring only 2% of the daily operational management personnel required for a typical coal-fired power plant. Natural gas combined cycle power generation combines clean natural gas with efficient combined cycle, becoming one of the most popular practical power generation technologies in the world today.

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