对云峰水电站及其水库经济运行问题的研究

云峰水电站是中朝两国共同修建的国际电站。云峰电站及其水库的运行方式，受多种条件的制约和受多种因素的影响，存在一些国内电站所没有的特殊情况。本文通过对厂内经济运行问题和水库最优运行方式的研究，说明合理调度水库是提高水电站经济效益的主要途径。     

发电厂锅炉经济运行研究

针对某电厂的实际情况,对影响电厂锅炉经济运行的因素进行分析。着重分析运行因素中蒸汽参数、各项热损失、辅机电耗、负荷分配和助燃油对经济性的影响,提出提高电厂运行经济性的措施,为发电企业的安全经济运行提供参考。     

大力发电厂细粉分离器的经济运行

细粉分离器是火力发电厂制粉系统中的重要设备。本文通过实验研究了细粉分离器的经济运行问题，指出运行工况对细粉分离器的分离效率及阻力损失的影响。     

变压器经济运行方式的探讨

随着电力变压器性能的发展,适合于老式变压器的一些节能措施例如小容量变压器只有接近满载后才应转运大容量变压器,一台变压器只有接近满载后才应改为2台并列运行,变压器的效率最高点在75%左右,以及把30%以下的负载运行称为"大马拉小车"等,已经不能适用.通过分析计算,确定了这些措施新的临界值,可供相关用户参考.     

强化管理科学挖潜努力争创国产200MW机组经济运行的一流水平

强化管理科学挖潜努力争创国产２００ＭＷ机组经济运行的一流水平哈尔滨第三发电厂哈尔滨第三发电厂总装机容量为１６００ＭＷ，分两期建设。一期工程安装两台２００ＭＷ国产机组，已分别于１９８６、１９８７年末，比原计划工期提前一年投产发电．二期工程安装两台６００...     

循环水泵经济运行方式探讨

实践证明 ,冬季低负荷时停运 1台循环水泵以节约厂用电、提高运行经济性是切实可行的。但何时可以停止或增开 1台循环水泵才能保证运行经济性 ,由于缺乏可靠的理论计算和数据说明 ,没有做出具体明确的规定。本文就此问题展开详细计算与论证 ,为我厂 4 #、5 #机循环水泵的经济运行方式提供可靠的理论依据。     

并行运行变压器经济运行方式的自动控制

并列运行变压器经济运行方式是工厂节能的有效措施之一,本文提出了用单片机对变压器的经济运行方式进行自动控制方案,使变压器的运行始终处于高效节能状态。     

制粉系统经济运行是发电厂节约厂用电的关键内容

发电厂如何使制粉系统在经济状态下运行,最大限度地降低制粉系统单耗,进一步节约厂用电量,通过对燃烧调整较、对制粉系统的深入调整、优化,并就这一问题提出见解,以使全国能源消耗量最大的发电企业在今后的节能降耗中能将制粉系统的经济运行放在节能降耗工作的关键位置。     

燃煤电厂脱硫装置投产效益的实例分析

新建燃煤电厂同步建设石灰石-石膏湿法脱硫装置，与主机同步投产，将产生较好的社会效益和经济效益。对某电厂脱硫投产当年创造的环保效益和经济收益进行了分析估算，同时围绕脱硫装置投入运行所产生的经济效益进行了探讨并提出一些建议。     

加强电网科学创新管理实现安全优质经济运行

天津电网处于华北电网的负荷中心,具有典型城市电网的特点。通过科学和创新管理,实现了电网安全优质经济运行,截止2006年底,电力调度通信中心安全调度记录超过3600天;近2年天津电网220kV电压合格率在国家电网公司同业对标中始终保持在A段水平;2006年度220 kV网损率低于同期水平。     

火电站锅炉运行参数的耗差分析

在用反平衡法对电站锅炉进行热效率计算的基础上,提出了运行参数偏离目标值所引起的煤耗偏差计算模型,并具体给出了锅炉主要运行参数变化与煤耗变化的关系式。     

Optimal time-invariant operation of a power and water cogeneration solar-thermal plant

Conceptual design, system-level models, and optimization of operation are presented for a cogeneration solar-thermal plant. The solar-thermal energy collected and concentrated in a salt pond is used in a regenerative Rankine steam cycle with an extraction turbine to produce electricity and process steam. The desalination system is based on reverse osmosis (RO) and multi-effect distillation (MED). An equation-oriented modeling environment is used for the development of time-dependent system-level models required for optimization of the plant. A meteorological radiation model is used to estimate the hourly distribution of beam radiation as a function of time (day and hour), location, and local weather (mainly visibility and humidity). A recently developed model is used to estimate the field efficiency, including projection losses and shading/blocking for a given heliostat layout. Time-invariant optimal operating conditions are presented for a summer day, considering Cyprus as a case study. Seawater desalination processes, RO and MED, are modeled by adapting and extending models from the literature. A control-volume model is developed for the steam cycle based on the first and second law, with given isentropic efficiencies, turbine leaks, and a detailed model for thermodynamic properties of steam/water. This model is validated and allows for optimization over a wide range of operating conditions, e.g., various extraction pressures. The optimization problem is formulated as a nonlinear program (NLP) with dynamics embedded and a heuristic global optimization approach is used. The sequential method of optimization is used, decoupling the simulation from the optimization. The results show that for the plant size considered (4 MW_e equivalent nominal capacity) and the MED design chosen based on the literature and industry practice, RO is preferred over MED from an energy point of view. In addition, under the current feed-in tariff (FiT) and water prices in Cyprus, extracting steam for MED is not recommended. In contrast, if current market prices for electricity and water in Cyprus are used, i.e., FiT is neglected, with a typical steam cycle design, extracting steam for MED at low pressures yields maximum income. A new process configuration is presented based on the findings from the case studies, resulting in significantly higher income and exergetic efficiencies.     

Technical–economical analysis of the Saveh biogas power plant

The resource limitation of fossil fuels and the problems arising from their combustion has led to widespread research on the accessibility of new and renewable energy resources. Solar, wind, thermal and hydro sources, and finally biogas are among these renewable energy resources. But what makes biogas distinct from other renewable energies is its importance in controlling and collecting organic waste material and at the same time producing fertilizer and water for use in agricultural irrigation. Unlike other forms of renewable energy, biogas neither has any geographical limitations and required technology for producing energy and nor is it complex or monopolistic. Considering the ever increasing amount of different types of organic waste materials (about 15 million tonnes) in Iran, working on the control of waste material and biogas production becomes inevitable.In this paper, biogas and the benefits from its production are discussed, as is the technical-economic analysis of the Saveh biogas power plant as a case study.     

热电厂汽动给水泵节能分析

汽动给水泵是热电厂利用富裕蒸汽 ,节能降耗的有效措施之一。它投资少、见效快 ,综合经济效益显著     

Economies of scale in nuclear power plant

This paper demonstrates that, to first order, the optimum size of nuclear plant depends only on the form of the dependence of capital costs and availability with size and not on absolute levels; it is also independent of nuclear fuel costs. the advantage of this treatment is that the forms of these dependences are less controversial than absolute values and the scope for confusion in determining optimum size is therefore reduced.     

油田注水系统节能经济运行的研究与实践

文章阐述了运用科学管理技术，提高注水系统的节能经济运行的方法，同时也是企业提高经济效益的有效途径之一．并介绍了注水系统经济运行的概念和意义，指出了影响注水经济运行的因素．开展注水系统经济运行的条件、方法及效果。     

[火用]分析在蒸汽动力装置中的应用

简述了[火用]分析的基本原理及方法,通过对简单蒸汽动力装置的[火用]分析,指出了[火用]分析方法是一种科学的、全面的分析方法。