GE 9F.03型燃气轮机先进热通道改造效果分析

介绍了某电厂9F.03型燃气轮机的透平动静叶实施降本增效改造的情况,将原有的传统热通道部件整体升级为先进热通道部件,提高了燃气轮机效率和出力。先进热通道的改造采用耐更高燃气温度的新材料,结合更好的冷却密封系统、间隙控制系统,以提升能源利用率。改造后燃气轮机的整体效率得到显著提高,部件寿命和检修间隔得到延长,检修维护费用进一步降低。     

采用进气喷雾冷却技术提高9E燃气轮机的出力和热效率

在分析大气温度对燃气轮机及联合循环性能影响的基础上,对镇海发电厂300 MW燃气轮机蒸汽联合循环机组进行改造,采用进气喷雾冷却装置提高了燃气轮机的出力和热效率,取得了很好的经济效益.     

美国老旧电厂重新匹配动力

美国准备对300GW左右的老旧电厂进行重新匹配动力改造，采用的主要方案是用现代燃气轮机替代原有的燃煤机组。给老旧电厂重新匹配动力可使其出力增加50％～200％，效率提高30％～40％，甚至更多，并显著减少排放量。文中介绍其中的几个典型项目。     

燃气轮机电厂LNG供气系统典型设计

由于国际市场燃油价格的不断上涨以及国家对工矿企业环保要求的不断提高。使燃用液体燃料的燃气轮机联合循环电厂面临严峻的形势,对燃气轮机进行燃用天然气的改造是解决燃气轮机电厂生存困境的最佳途径。结合广东部分燃气轮机电厂燃用液化天然气（LNG）技术改造的经验,提出了燃气轮机电厂LNG供气系统的典型设计方案,可供待进行天然气改造的燃气轮机电厂参考。     

国外科技信息

高效率的联合循环发电厂据英刊《现代动力系统》报道,最近,在荷兰的乌得勒支的勃固斯(Pegus)12号燃气-蒸汽联合循环电厂进行了电厂净效率的测试,其测试结果为52%。据称这是目前世界上采用化石燃料的发电厂所获得的最高效率。联合循环由一台 ABB 公司生产的13E 型燃气轮机与蒸汽轮机组成。其蒸汽轮机的最大出力为22.5万KW,燃气轮机的最大出力为15万 KW。由于发电量     

燃气轮机进气冷却技术经济比较

燃气轮机的性能与环境温度有关,其出力随空气进气温度升高而降低,燃气轮机的进气冷却是增加其出力的最有效的方法。介绍和讨论了燃气轮机进气冷却的各种方法,并对各种冷却方法进行了技术经济比较。结果表明,不论采用何种进气冷却技术都可以有效地提高燃气轮机的出力和效率,但对于不同地区、不同运行条件的燃气轮机,应根据实际条件选择进气冷却方式。     

小型水轮发电机组增容改造可行性及其效益分析

通过对电厂提高水轮机最大出力的途径进行分析，得出更换转轮实现水轮发电机组增表的方案可行。结合需要论述配备设备的改造，分析增容改造的费用和收益。通过改造不但可以提高水轮机的效率，有效地利用丰水期的弃水发电，给电厂带来可观的经济效益，而且可以提高设备的安全生产水平。     

湘潭电厂轴向型粗粉分离器改造

介绍了湘潭电厂300 MW机组锅炉轴向型粗粉分离器的改造特点,对改造后制粉系统运行情况、煤粉细度、制粉系统出力和电耗、粗粉分离器效率等进行了试验和分析,结果表明改造后煤粉细度调节特性和粗粉分离器效率均有提高.     

增压流化床技术有利于旧锅炉改造

ＡＢＢ公司利用增压流化床 (ＰＦＢＣ)技术改造德国东部巴登堡州的Ｃｏｔｔｂｕｓ电厂 ,由瑞典ＡＢＢ的Ｃａｒｂｏｎ公司供应燃烧容器燃气轮机、上煤出灰系统及机组控制系统 ,由德国ＡＢＢＮｕｒｎｂｅｒｇ公司供应一台新汽轮机用以提高全厂出力。将最大电出力４８ＭＷ的供热机组 ,改造成电出力７４ＭＷ供热能力不变的新锅炉。Ｃｏｔｔｂｕｓ电厂原燃用当地褐煤 ,热值低、水份大 ,有较强的黏附性,煤种活泼、燃烧短暂和含硫量高等缺点 ,燃烧排放物ＮＯＸ 、ＳＯＸ 、Ｎ２Ｏ、ＣＯ和未燃烬物均高 ,改造后除采用ＰＦ ＢＣ技术外 ,燃煤先经Ｓｃ…     

气电虚拟电厂多能源市场竞标策略

针对虚拟电厂竞标中需求响应、风电出力的不确定性造成的风险,利用新型电转气技术和燃气轮机快速调节能力,构成含气电双向转换的气电虚拟电厂,提出气电虚拟电厂的多能源市场竞标模型,同时参与电力市场和天然气市场的竞标。模型以气电虚拟电厂总利润最大为目标,不确定性表达为需求响应、风电出力的误差概率分布,并通过抽样和筛选确定场景描述。算例结果表明：含气电双向转换的气电虚拟电厂通过在2个市场中灵活竞标,获得了更高的竞标利润;控制燃气轮机和电转气出力,显著降低了不平衡惩罚成本。气电虚拟电厂扩展了虚拟电厂的竞标市场,有利于将来虚拟电厂根据不同电价和气价波动切换能源形式。     

Some matters concerned with selecting steam parameters and process-circuit solutions to optimize the parameters of steam turbine equipment and engineering design developments

The possibility and advantages of increasing steam pressure in the steam-turbine low-pressure loop for combined-cycle power plants are considered. The question about the advisability of developing and manufacturing steam turbines for being used in combined-cycle power units equipped with modern class F gas turbines for supercritical and ultrasupercritical steam parameters is raised.     

Restoration islands supplied by gas turbines

The paper describes how gas turbine based plants (open cycle and combined cycle) can be profitably used in power system restoration for supplying restoration areas. In recent times, in fact, several gas turbine sections entered the power system due to the improved efficiency of gas turbines and to the development of high efficiency combined-cycle plants. These units can be easily improved to provide black-start capability and can therefore largely increase the black-start capacity of the entire system. Restoration islands to be used for minimizing the time to supply critical areas, such as urban and industrial zones, can support the usual restoration paths designed to provide cranking power to large steam units.     

如何配置联合循环发电机组

介绍了大型燃气轮机和燃气－蒸汽联合循环机组的类型及其应用情况,重点对联合循环机组的配置方案进行了探讨。通过各种方案的比较,认为带基本负荷的联合循环电厂,适宜选用单轴机组,而带部分负荷调峰运行的联合循环电厂,适宜选用多轴机组。     

Specific features relating to development and operation of steam turbines for combined-cycle plants

Main lines of work on improving steam turbines intended for use in the composition of different binary combined-cycle power plants are presented. Matters of making steam turbines for combined-cycle plants more economically efficient and maneuverable are discussed.     

The influence of the type of steam distribution in steam turbines of combined-cycle plants on the effectiveness of their operation

The paper is concerned with the comparative effectiveness of the use of nozzle and throttle steam distribution in steam turbines of combined-cycle plants equipped with heat recovery boilers. The influence of the type of steam distribution in the steam turbine on the reliability of startup regimes and the load control range of a combined-cycle plant on the effectiveness of the use of steam turbines in the regimes of the frequency and power control in a power system is analyzed.     

Dynamic models for combined cycle plants in power system studies

The increasing use of combined cycle plants as part of a power system's generation mix brings an industry need for modeling these types of plants in assessments of system dynamic performance. This need is more acute in some developing countries where combined cycle plants form a significant proportion of the system's generating capacity. This paper is the third of a series of papers prepared by the Working Group on Prime Mover and Energy Supply Models for System Dynamic Performance Studies. It describes various aspects of combined cycles made up of gas turbines, waste heat recovery boilers and steam turbines and develops models designed to simulate the response of the combined cycle plant for use in system dynamic performance studies     

大型液化天然气电厂自动化网络设计与配置

以中海福建莆田燃气电厂一期4台9F级燃气轮机为基础,提出了液化天然气电厂自动化网络的设计和配置方案,具有启停迅速、调峰能力强、运行人员少的特点,自动化水平较高,对其他同类电厂的建设和改造有一定的借鉴意义.     

200MW汽轮机热力考核试验的分析

讨论了大型汽轮机考核试验的一些重要的技术问题,为提高试验质量,加深对设计和现场热力系统的理解、认识,为分析试验结果以及深入进行节能工作,提出了一些行之有效的方法和措施     

Combined cycle plants: Yesterday,today, and tomorrow (review)

Gas turbine plants (GTP) for a long time have been developed by means of increasing the initial gas temperature and improvement of the turbo-machines aerodynamics and the efficiency of the critical components air cooling within the framework of a simple thermodynamic cycle. The application of watercooling systems that were used in experimental turbines and studied approximately 50 years ago revealed the fundamental difficulties that prevented the practical implementation of such systems in the industrial GTPs. The steam cooling researches have developed more substantially. The 300 MW power GTPs with a closedloop steam cooling, connected in parallel with the intermediate steam heating line in the steam cycle of the combined cycle plant (CCP) have been built, tested, and put into operation. The designs and cycle arrangements of such GTPs and entire combined cycle steam plants have become substantially more complicated without significant economic benefits. As a result, the steam cooling of gas turbines has not become widespread. The cycles—complicated by the intermediate air cooling under compression and reheat of the combustion products under expansion and their heat recovery to raise the combustion chamber entry temperature of the air—were used, in particular, in the domestic power GTPs with a moderate (700–800°C) initial gas turbine entry temperature. At the temperatures being reached to date (1300–1450°C), only one company, Alstom, applies in their 240–300 MW GTPs the recycled fuel cycle under expansion of gases in the turbine. Although these GTPs are reliable, there are no significant advantages in terms of their economy. To make a forecast of the further improvement of power GTPs, a brief review and assessment of the water cooling and steam cooling of hot components and complication of the GTP cycle by the recycling of fuel under expansion of gases in the turbine has been made. It is quite likely in the long term to reach the efficiency for the traditional GTPs of approximately 43% and 63% for PGUs at the initial gas temperature of 1600°C and less likely to increase the efficiency of these plants up to 45% and 65% by increasing the gas temperature up to 1700°C or by application of the steam cooling in the recycled fuel cycle.     

联合循环电站低负荷烟气成分控制对策研究

联合循环电站采用的重型燃气轮机在启动以及低负荷阶段普遍存在冒黄烟现象,其中承担调峰工作的机组问题尤为突出。初步判断,冒黄烟是由于低负荷工况下烟气中NO2含量升高所致。为进一步理清燃气轮机黄烟生成机理,有效地控制低负荷工况下烟气中NO2含量,以GE公司6F.03燃机为研究对象,针对燃机启动阶段,采用现场烟气测试的方法对余热锅炉内部不同位置烟气成分进行监测,并对比分析黄烟生成的影响因素,最后从燃机侧和余热锅炉侧提出了重型燃气轮机抑制黄烟的对策及治理措施。