Retrofitting the Strogino district heat supply station with construction of a 260-MW combined-cycle power plant (Consisting of two PGU-130 combined-cycle power units)

The retrofitting carried out at the Strogino district heat supply station and the specific features of works accomplished in the course of constructing the thermal power station based on a combined-cycle power plant at the station site are described; the layout solutions for the main building and turbine building are presented, and a comparison of the retrofitted station with the Kolomenskoe and Vnukovo gas turbine-based power stations is given.     

First results from operation of the Adler thermal power station equipped with two PGU-180 combined-cycle power units

We present technical characteristics of the equipment used in the PGU-180 power units of the Adler thermal power station (a branch of OGK-2) commissioned in November 2012 after the entire power plant had successfully passed an integrated test, including qualification of the entire power plant’s capacity and tests aimed at determining the guaranteed characteristics.     

Studies of the thermal circuit of an advanced integrated gasification combined-cycle power plant

The results obtained from a study of the thermal circuit of a combined-cycle plant with coal gasification are presented, and a new-generation gas-turbine unit furnished with different fuel supply systems and using different methods for incorporating an air separation plant into the process circuit is described. Data on the composition of producer gas and calculated values of the combined-cycle power plant efficiency are given.     

Optimizing the technology for starting a PGU-450 combined-cycle power unit

Matters concerning selecting the optimal sequence of procedures for starting a PGU-450 combined-cycle power unit are considered. A theoretical substantiation is given of the economic advisability of optimizing the startup of this power installation according to the criterion of reducing the time taken for carrying out startup operations subject to constraints on the reliability of equipment operation.     

The selection of a profile of the PGU-400T combined-cycle cogeneration unit for the TETs-25 cogeneration power plant of the mosenergo power utility

The selection of a profile of a heat-recovery combined-cycle cogeneration plant of 400- to 420-MW capacity for the expansion of the TETs-25 Mosenergo cogeneration plant is substantiated. It is shown that the most preferable version is a two-shaft arrangement with a gas turbine installed at a zero elevation level and a steam turbine mounted on a frame foundation, with cogeneration equipment located in the basement.     

Fitting the PGU-410 combined-cycle plant at the Nevinnomyssk district power station with automated control systems

Experience gained from international cooperation on designing and commissioning the computerized automation suite serving as a kernel of the automated process control system of a modern combined-cycle plant is considered taking as an example the PGU-410 unit installed at the Nevinnomyssk district power station. Specific features relating to the technology of combined-cycle plant operation are shown, and some solutions adopted in the process automated control algorithms and in the hardware part of the process control system are shown. All power unit control systems are briefly described together with methods for integrating them into a united system. Conclusions regarding the advisability of using some possibilities of modern computerized automation suites are drawn. Graphs of combined-cycle plant operation modes are presented and analyzed.     

火力发电厂厂用电节能探讨

节约能源是促进企业发展、提高企业经济效益的有效措施.降低发电厂用电率是节能降耗工作中的重要一环.黄金埠发电厂通过节能管理、设备治理及技术改造(对凝结水泵、增压风机变频改造,循环水泵电机变极改造,电除尘高频电源改造节能效果进行了分析说明)、运行方式优化调整等几个方面人手,开展厂用电节能的相关工作,降低厂用电率取得实效.     

Diagrams of regimes of cogeneration steam turbines for combined-cycle power plants

General considerations regarding the form of the steam-consumption diagram for a three-loop cogeneration-type combined-cycle plant are formulated on the basis of well-known approaches. According to these considerations the diagram should consist of the main chart and numerous corrections that must be taken into account in using the diagram. The steam-consumption diagram of the T-113/145-12.4 steam turbine for the PGU-410 combined-cycle plant at the Krasnodar cogeneration station is presented.     

Prospective gas turbine and combined-cycle units for power engineering (a Review)

The modern state of technology for making gas turbines around the world and heat-recovery combined-cycle units constructed on their basis are considered. The progress achieved in this field by Siemens, Mitsubishi, General Electric, and Alstom is analyzed, and the objectives these companies set forth for themselves for the near and more distant future are discussed. The 375-MW gas turbine unit with an efficiency of 40% produced by Siemens, which is presently the largest one, is subjected to a detailed analysis. The main specific features of this turbine are that the gas turbine unit’s hot-path components have purely air cooling, due to which the installation has enhanced maneuverability. The single-shaft combined-cycle plant constructed on the basis of this turbine has a capacity of 570 MW and efficiency higher than 60%. Programs adopted by different companies for development of new-generation gas turbine units firing synthesis gas and fitted with low-emission combustion chambers and new cooling systems are considered. Concepts of rotor blades for new gas turbine units with improved thermal barrier coatings and composite blades different parts of which are made of materials selected in accordance with the conditions of their operation are discussed.     

Results obtained from tests of organics-absorbing anion-exchange resins for the water treatment plant at the Ivanovo district power station

We present the results obtained from laboratory tests of Levatit VP OC 1074, Levatit S 6328 A, and Levatit S 6368 organics-absorbing anion-exchange resins on the filtrates from the first stage of the Na-cation treatment facility at the Ivanovo district power station.     

A comparative analysis of the economic effect from using cogeneration gas-turbine units and combined-cycle plants in a power system

The net cost of heat production at cogeneration stations equipped with gas turbine units, steam turbine units, and combined-cycle plants is analyzed by way of comparison. It is shown that the minimal net cost will be achieved in the case of using certain types of power installations depending on the network tariff for electric energy.     

三峡左岸电站电力系统稳定器现场试验

介绍了三峡左岸电站电力系统稳定器(PSS)的选型过程,主要介绍了PSS2A模型的构成和工作原理。对PSS2A模型进行了现场试验,分别在投入PSS和退出PSS的条件下,采用电压阶跃响应、强迫振荡和无功反调等试验以验证其阻尼能力。试验结果表明,PSS2A模型能有效地抑制低频振荡,且不会产生无功反调现象,满足国家电力调度中心对三峡左岸电站机组并网发电的要求。     

The choice of the design features of maneuverable combined-cycle units for new Russian power plants

The design features are treated of combined-cycle units (CCUs) utilizing V94.3A Siemens, GTE-110 Saturn, and GTE-160 LMZ gas turbines for the purpose of constructing new power plants in Russia designed to meet the requirement of high maneuverability. The problem is discussed of employing bypass smoke stacks for different CCU options with a view to improving their maneuverability and advance commissioning of a new power.     

Model studies for determining whether combined-cycle plants can participate in control of frequency and power flows in unified energy systems of Russia

Approximating transfer functions of a PGU-39 combined-cycle plant as a technological system with a controlled power output are presented, a structure of a system for automatic closed-loop control of the combined-cycle plant power output is proposed, and results from model investigations of this system are presented.     

逻辑树法在火电厂节能监督中的应用

节能监督是目前火电厂节能降耗的重点工作和主要监控手段,如何对火电厂各环节中能消损失的关键点和相互关系、节能潜力部位等进行分析和改善,确保节能监督闭环化管理,一直是相关人员研究的课题.文中建立的节能监督逻辑树,以供电煤耗为根,将影响因素分层罗列,从最高层开始,逐步向下扩展,形成一个影响因素的树状结构.该逻辑树可帮助和引导相关人员理清思路,逐层查明引起机组供电煤耗变化的原因,为火电厂的运行调整、设备治理及检修计划的确定提供科学依据.该方法经多个火电厂的节能应用,效果明显,值得推广.     

火力发电厂设计中节能降耗的基本方法及措施

介绍省内外已建和在建的火力发电厂的优化设计经验。总结出一系列行之有效的节能降耗措施     

Experience gained from mastering the operation of the Kirishi district power station unit 6 modernized using the combined-cycle technology

This article is devoted to the retrofitting of one of the 300-MW power units at the Kirishi district power station carried out using the combined-cycle technology in order to increase the power unit capacity and make it more efficient. The main and auxiliary equipment of the retrofitted power unit are described. The problems revealed and solved in the course of adjustment works are mentioned. Problems concerned with organizing the startup modes of combined-cycle power units fitted with three-loop heat-recovery boilers and a double-bypass startup circuit arrangement are touched. The design and actually achieved technical and economic indicators of the main equipment and the power unit as a whole are presented. A tangible economic effect is noted from a comparison of the key indicators before and after the retrofitting. It is shown that the retrofitted power unit has good environmental indicators and a very high level of automation.     

储能对火电厂励磁稳定性影响分析

本文针对目前储能接入电厂后对发电厂励磁系统调差系数、无补偿相位特性、阻尼特性造成一系列影响的问题,研究了储能接入电厂对励磁系统稳定性的影响.首先,建立考虑储能影响的发电厂单机模型,给出了储能与调差系数、无补偿相位特性、阻尼特性的理论关系,在此基础上分析了不同储能出力对上述三者的影响.仿真结果表明,储能接入电厂后,对励磁系统的调差系数、阻尼特性、励磁系统无补偿特性都产生了一定影响,需要对上述三者进行安全性评估.