间接确定燃气轮机初温的研究

从经济性和技术上来比较,燃气轮机发电技术具有较大的优势,这些优势必将转为应用上的快速、大规模的发展。由于“西气东输”工程的逐步开展,在华东地区将建设一批大容量的燃气轮机电厂,是燃气轮机在我国发展的转折点[1]。然而燃气轮机在运行监测、状态分析、性能诊断等方面还有     

高温燃料电池_燃气轮机混合发电系统性能分析

针对 高温燃料电池系统的高效率、环保性以及排气废热的巨大利用潜能,将其与燃气轮机组成混合装置进行发电是未来分布式发电的一种极有前景的方案。文中对高温燃料电池及混合循环系统作了简介,并对两种典型的高温燃料电池－燃气轮机混合循环发电系统进行了性能分析,这将为我国高温燃料电池－燃气轮机混合循环系统的研制提供参考。     

复合发电技术能提高效率

据新华社东京讯：日本电源开发公司将燃料电池、燃气轮机和蒸汽轮机三种发电方式组合在一起进行发电，可将全厂发电效率提高到５９％。 这一新的发电方式叫做“煤炭气化燃料电池复合发电系统”。新系统首先把煤粉输入煤炭气化炉，使之在高温高压下与氧发生反应，然后把其中的可燃气体（主要是Ｈ２和ＣＤ）经过除硫和其它杂质后，充入固体电解质，根据燃料电池的化学能直接转化为电能的原理进行发电；生产的高温高压气休再推动燃气轮机进行发电；剩余的废气通过废热回收炉，再推动蒸汽轮机发电。 这家公司现已建成包括日处理能力为５０ｔ的煤…     

生物质发电技术分析比较

文章主要对三类生物质发电技术进行了分析比较.生物质混烧发电技术在已有燃煤电站的基础上将生物质与煤混烧发电,投资成本是三类技术中最少的,但可能降低原燃煤电站效率.由于低热值燃气轮机技术尚未成熟,因此生物质气化发电技术仅适用于10MW以下中小规模发电系统,气化-余热发电系统效率较高,特别适用于5-6MW的发电系统.生物质直接燃烧发电技术比较成熟,但在小规模发电系统中蒸汽参数难以提高,只有在大规模利用时才具有较好的经济性,比较适合于10MW以上的发电系统.     

基于WINDOWS的微型燃气轮机实时智能监控系统

微型燃气轮机是一种新型的低排放的分布式发电装置，可广泛应用于分布式电站、冷热电联产以及混合电动汽车等领域。为对微型燃气轮机和动力电池组合进行混合动力应用试验研究，将微型燃气轮机与油耗仪、外接电池组和负载组成试验系统，通过控制发电机功率的数字功率控制器的用户维护串口，在Windows环境下开发监控程序，对微型燃气轮机运行状态参数，进行自动实时监控，并对发电功率进行自动调节。     

高温燃料电池与燃气轮机相结合的混合发电系统

高温燃料电池与燃气轮机相结合的混合发电系统具有高效、环保和可靠的特性,这种新颖的混合发电系统在未来分布式发电领域具有广阔的应用前景。有不少专家和学者对其系统构成度匹配、系统性能等问题做了大量研究。目前已有高温燃料电池与燃气轮机混合发电系统成功运行,但仍有很多问题需要进行进一步的研究和探索,以使该混合发电系统早日实现商业化运行。本文综述了高温燃料电池与燃气轮机混合发电系统的研究现状,展望了该混合发电系统在未来的研究度发展前景。     

整体煤气化联合循环（IGCC）发电技术介绍

整体煤气化联合循环（IGCC）发电技术是煤气化和蒸汽联合循环的结合,是当今国际正在兴起的一种先进的洁净煤（CCT）发电技术,具有高效、低污染、节水、综合利用好等优点。它的原理是：煤经过气化和净化后,除去煤气中99％以上的硫化氢和接近100％的粉尘,将固体燃料转化成燃气轮机能燃用的清洁气体燃料,以驱动燃气轮机发电,再使燃气发电与蒸汽发电联合起来。     

燃气／蒸汽联合循环发电装置动向

燃气/燃汽联合循环发电在一些发达国家竞相发展。所谓联合循环发电装置,就是把燃气轮机发电装置和蒸汽轮机发电装置结合起来,利用发电作功后的燃气轮机高温排气加热蒸汽循环的给水,产生蒸汽循环所需要的高温蒸汽,供汽轮机作功发电.也可以直接在增压燃气锅炉里产生燃气推动燃气轮机发电,同时产生高温蒸汽进入蒸汽轮机发电.这种联合循环发电装更,可使然气轮机高温排气得到充分利用。联合循环配合得好,发电效率可比当今先进的超临界蒸汽循环机组的42％高出13个百分点。这对降低发电一次能源消耗具有极大的经济意义。而且联合循环还有调峰、环保等诸多社会效益,联合据环将成为电能生产新潮流,这是理所当然的。 我国改革开放近十年来,经济高速发展,一些地区的电力供需矛盾十分紧张,促使燃气轮机发电装置有了发展.但鉴于现行燃料政策,限制用石油、天然气发电,大容量燃气轮机制造尚未展开,我国联合循环还处于引进消化的起步阶段。     

燃机电厂天然气调压站配置探讨

天然气用于燃气轮机发电在我国越来越多,但燃气轮机对天然气的压力、温度等都有一定的要求。天然气调压站是天然气的主要处理系统,直接影响到燃气轮机的安全稳定运行。根据已投产燃气轮机的运行经验,对天然气调压站的系统设备配置作了分析探讨,对设备提出了经济合理地配置的建议。     

生物质气化技术讲座(五)生物质气化发电与生物质热裂解工程

生物质气化发电主要有３种方式：一是将可燃气作为内燃机的燃料,用内燃机带动发电机发电;二是将可燃气作为燃气轮机的燃料,用燃气轮机带动发电机发电;三是用燃气轮机和汽轮机实现两级发电,即利用燃气轮机排出的高温废气把水加热成蒸汽,再用蒸汽推动汽轮机带动发电机发电。我国主要是采用第一种方式进行生物质气化发电,并开始研究和探讨后两种发电方式。本讲还要简要介绍生物质热裂解工程实例。１我国生物质气化发电发展概况我国生物质气化发电所用原料以谷壳（尤其是稻壳）为主。早在６０年代,我国就开始了生物质气化发电的研究,研…     

Comparison of evaporative inlet air cooling systems to enhance the gas turbine generated power

The gas turbine performance is highly sensitive to the compressor inlet temperature. The output of gas turbine falls to a value that is less than the rated output under high temperature conditions. In fact increase in inlet air temperature by 1°C will decrease the output power by 0.7% approximately. The solution of this problem is very important because the peak demand season also happens in the summer. One of the convenient methods of inlet air cooling is evaporating cooling which is appropriate for warm and dry weather. As most of the gas turbines in Iran are installed in such ambient conditions regions, therefore this method can be used to enhance the performance of the gas turbines. In this paper, an overview of technical and economic comparison of media system and fog system is given. The performance test results show that the mean output power of Frame‐9 gas turbines is increased by 11 MW (14.5%) by the application of media cooling system in Fars power plant and 8.1 MW (8.9%) and 9.5 MW (11%) by the application of fog cooling system in Ghom and Shahid Rajaie power plants, respectively. The total enhanced power generation in the summer of 2004 was 2970, 1701 and 1340 MWh for the Fars, Ghom and Shahid Rajaie power plants, respectively. The economical studies show that the payback periods are estimated to be around 2 and 3 years for fog and media systems, respectively. This study has shown that both methods are suitable for the dry and hot areas for gas turbine power augmentation. Copyright © 2007 John Wiley & Sons, Ltd.     

Effect of various inlet air cooling methods on gas turbine performance

Turbine air inlet cooling is one of many available commercial methods to improve the efficiency of an existing gas turbine. The method has various configurations which could be utilized for almost all installed gas turbines. This paper presents a comparison between two commons and one novel inlet air cooling method using turbo-expanders to improve performance of a gas turbine located at the Khangiran refinery in Iran. These methods have been applied to one of the refinery gas turbines located at the Khangiran refinery in Iran. Two common air cooling methods use evaporative media or a mechanical chiller. The idea behind the novel method is to utilize the potential cooling and power capacity of the refinery natural gas pressure drop station by replacing throttling valves with a turbo-expander. The study is part of a comprehensive program with the goal of enhancing gas turbine performance at the Khangiran gas refinery. Based on the results, it is found that using turbo-expanders is the most economically feasible option and so is recommended to be utilized for improving gas turbine performance at the Khangiran refinery.     

风电与燃气轮机互补发电系统发电成本分析

在采用风电场与小型燃气轮机组成的互补系统发电特性参数的基础上,详细分析了互补系统发电成本的构成和各自的计算方法。采用新疆达坂城风电场的风速数据,基于互补系统的发电特性参数和风电场与燃气轮机电站的发电成本构成,应用改进过的等额支付折算法,在当前的技术条件和价格下,计算了风电场子系统和燃气轮机电站子系统各自的折旧成本、燃料成本和运行维护成本,得到了整滚发电系统发电成本的计算方法,为在新疆地区实现这种互补发电系统提供经济分析基础。     

Framework design of a hybrid energy system by combining wind farm with small gas turbine power plants

Owing to the stochastic characteristic of natural wind speed, the output fluctuation of wind farm has a negative impact on power grid when a large-scale wind farm is connected to a power grid. It is very difficult to overcome this impact only by wind farm itself. A novel power system called wind-gas turbine hybrid energy system was discussed, and the framework design of this hybrid energy system was presented in detail in this paper. The hybrid energy system combines wind farm with several small gas turbine power plants to form an integrated power station to provide a relatively firm output power. The small gas turbine power plant has such special advantages as fast start-up, shutdown, and quick load regulation to fit the requirement of the hybrid energy system. Therefore, the hybrid energy system uses the output from the small gas turbine power plants to compensate for the output fluctuation from the wind farm for the firm output from the whole power system. To put this hybrid energy system into practice, the framework must be designed first. The capacity of the wind farm is chosen according to the capacity and units of small gas turbine power plants, load requirement from power grid, and local wind energy resource distribution. Finally, a framework design case of hybrid energy system was suggested according to typical wind energy resource in Xinjiang Autonomous Region in China.     

9FA燃气轮机的供气降压运行技术

9FA燃气轮机正常的天然气供气压力在4.0MPa及以上,那么在供气压力为2.0MPa时机组能否实现降压运行呢?通过对某厂9FA燃气轮机的供气降压运行实践证明,这种技术是可行的。9FA燃机的供气降压运行技术,拓宽了机组运行的供气范围,对某些天然气压力不足的地区有着现实的意义。     

Simulation of the operation of a gas turbine installation of a thermal power plant with a hydrogen fuel production system

The growth in demand for the production of heat and electricity requires an increase in fuel consumption by power equipment. At the moment, the most demanded thermal equipment for construction and modernization is gas turbine units. Gas turbines can burn a variety of fuels (natural gas, synthesis gas, methane), but the main fuel is natural gas of various compositions. The use of alternative fuels makes it possible to reduce CO₂ and NO_x emissions during the operation of a gas turbine. Under conditions of operation of thermal power plants at the wholesale power market, it becomes probable that combined cycle power units, designed to carry base load, will start to operate in variable modes. Variable operation modes lead to a decrease in the efficiency of power equipment. One way to minimize or eliminate equipment unloading is to install an electrolysis unit to produce hydrogen.In this article the technology of “Power to gas” production with the necessary pressure at the outlet of 30 kgf/cm² (this pressure is necessary for stable operation of the fuel preparation system of the gas turbine) is considered. High cost of hydrogen fuel during production affects the final cost of heat and electric energy, therefore it is necessary to burn hydrogen in mixture with natural gas. Burning a mixture of 5% hydrogen fuel and 95% natural gas requires minimal changes in the design of the gas turbine, it is necessary to supplement the fuel preparation system (install a cleaning system, compression for hydrogen fuel). In addition, the produced hydrogen can be stored, transported to the consumer. For the possibility of combustion of a mixture of natural gas and hydrogen fuel in a gas turbine the methodology of calculation of thermodynamic properties of working bodies developed by a team of authors under the guidance of Academician RAS (the Russian Academy of Sciences) V.E. Alemasov has been adapted, resulting in a program that allows to obtain an adequate mathematical model of the gas turbine. The permissible range of the working body temperature is limited to 3000 K. This paper presents the developed all-mode mathematical model of a gas turbine.On the basis of mathematical modeling of a gas turbine, a change in the main energy and environmental characteristics is shown depending on the composition of the fuel gas. Adding 5% hydrogen to natural gas has little effect on the gas turbine air treatment system, the flow rate remains virtually unchanged. CO₂ emissions decrease, but there is an increase in the amount of H₂O in the turbine exhaust gases.     

Structural modeling of a typical gas turbine system

This paper presents an approach for the structural modeling and analysis of a typical gas turbine system. This approach has been applied to the systems and subsystems, which are integral parts of a typical gas turbine system. Since a gas turbine system performance is measured in terms of fluid flow energy transformations across its various assemblies and subassemblies, the performance of such subsystems affects the overall performance of the gas turbine system. An attempt has been made to correlate the associativity of such subsystems contributing to overall gas turbine system functional evaluation using graph theoretic approach. The characteristic equations at the system level as well as subsystem level have been developed on the basis of associativity of various factors affecting their performance. A permanent function has been proposed for the functional model of a gas turbine system, which further leads to selection, identification and optimal evaluation of gas turbine systems.     

发电用单轴燃气轮机动态模型研究

以某发电用单轴燃气轮机的控制系统为原型，利用Matlab／Simulink对该型单轴燃气轮机控制系统进行了仿真，仿真结果与实际物理过程相吻合，说明此模型可以用于单轴燃气轮机及其控制系统的研究。     

PG6531燃气轮机的升级改造

介绍了大庆燃机电厂对GE公司生产的PG6531燃气轮机进行本体升级改造时的新技术应用情况、改造的效果等。