90-MW single-shaft power generating steam-gas unit based on the GTÉ-65 gas turbine and K-30-60 steam turbine

This is an examination of a variant of the monoblock PGU-90 steam-gas unit developed at the “Leningradskii Metallicheskii Zavod” (LMZ) branch of “Silovye mashiny” based on a GTé-65 gas turbine unit and a K-30-60 steam turbine employing a synchronous release clutch with an overall useful power at the generator of 90 MW. The kinematic and thermal systems and the basic technical characteristics of this version of the PGU-90 are discussed, and the oil-supply system and structural features of the major equipment in the unit — the gas turbine, steam turbine, turbine generator, reducer, boiler-utilizer, and release clutch — are described. The proposed variant of a combination of thermal power production equipment is built using basic designs with minimal further development for these joint operating conditions.     

Use of GTÉ-65 gas turbine power units in the thermal configuration of steam-gas systems for the refitting of operating thermal electric power plants

Thermal configurations for condensation, district heating, and discharge steam-gas systems (PGU) based on the GTé-65 gas turbine power unit are described. A comparative multivariant analysis of their thermodynamic efficiency is made. Based on some representative examples, it is shown that steam-gas systems with the GTé-65 and boiler-utilizer units can be effectively used and installed in existing main buildings during technical refitting of operating thermal electric power plants. Translated from élektricheskie stantsii, No. 6, June 2008, pp. 15–25.     

Engineering and economic indicators and maneuverability characteristics of a PGU-80 double unit and PGU-39 single units at the Sochi thermal power plant

The results of tests of the engineering, economic, and environmental performance and some of the maneuverability characteristics of PGU-80 and PGU-39 steam-gas power generation units at the Sochi thermal power plant are discussed.     

65-MW gas-turbine system for renovation of the Mosénergo TÉTs-9 heating and electric power plant

Thermal layouts are examined for condensation-type steam-gas systems with one, two, and three boiler-utilizer pressure stages based on the GTé-65 gas-turbine power generating system and the PT 60-12.7_1.27 steam turbine. The operational efficiency and feasibility of integrating a GTé-65 and a Pr-86-13.72-545 boiler-utilizer with a single pressure stage in the existing thermal layout of the TéTs-9 plant of Mosénergo (a station with crosslinks) within the main housing at the location of a no longer operating R-50-12.7_1.27 steam turbine and PTVM-100 water heating boiler are demonstrated.     

Computational and experimental test of self starting regimes for the in-house needs of the PGU-450 steam-gas unit at the Kaliningrad TÉTs-2 Heating and Power Plant during supply disruptions

The major stages of a computational test of the self starting regimes for the in-house needs of unit No. 1 of the 450 MW steam-gas unit at the Kaliningrad TéTs-2 Heating and Electric Power Plant during supply disruptions are described. The results of an experimental test of five regimes are described and compared with the computational data. The results are analyzed. Recommendations are made for changes in the automatic reserve switching algorithms for the 6-kV sections, which, when realized, will ensure easier self startup for the mechanisms providing for in-house needs during supply disruptions. __________ Translated from élektricheskie Stantsii, No. 4, April 2008, pp. 46–55.     

蒲石河抽水蓄能电站厂用电系统接线方式的优化调整

蒲石河抽水蓄能电站厂用电系统分为10 kV系统和400 V系统,分别介绍了其接线构成和运行方式。根据厂用电系统接线特点,提出改进机组机旁动力盘接线方法,同时取消自用电400 V四段母线。对厂用电系统接线的优化调整及改进可以提高特殊情况下机组运行可靠性,减少了检修维护工作量。     

600MW超临界机组协调控制系统的分析与优化

对国投钦州电厂600 MW超临界机组协调控制系统的构成、特点等进行了分析,并针对此协调控制系统所存在的问题进行了改进和优化,优化后机组主要参数调节品质优良,协调控制系统的整体性能得到了有效的改善。     

基于稳定输送流场的正压浓相气力输灰系统研究及应用

分析了大型火电机组气力输灰系统高能耗、输灰管道磨损严重的原因,根据气一固两相流的流动特性与其稳定输送流场的关系,设计了新型多泵制正压浓相型气力输灰系统。对该系统在600MW机组上进行了试验研究,试验结果表明,该系统可节能降耗并减少管道的磨损。     

Process Control System of the Mutnovskaya Geothermal Power Plant

The experience of creating software and algorithms for automatic process control at the Mutnovskaya geothermal power plant (GTPP) on the basis of the Teleperm ME automation system is presented. The heat cycle and special features of the heat flow diagram of the power plant are briefly described. The engineering solutions used, the structure of the system, and the principles of process control at the Mutnovskaya GTPP are considered. Special attention is devoted to the turbine regulator that consists of several regulating units because of the great number of problems solved by control valves; each regulating unit solves control problems depending on the mode of operation of the power generating set.     

虚拟仪器在发电机励磁系统功率单元故障诊断中的应用

分析了发电机励磁系统功率单元的工作原理和特点，并进行了故障分类，在此基础上提出一种结合虚拟仪器技术的改进模式识别的故障诊断方法，开发出了基于虚拟仪器的发电机励磁系统功率单元故障诊断系统。实验表明，该系统能准确判断出发生故障的晶闸管，并给出正确的诊断。     

励磁功率单元模型参考故障诊断方法

介绍了模型参考故障诊断的基本原理，考虑到同步发电机励磁系统功率单元的非线性特性，为了提高模型的准确性和可观测性，采用分布式物理图网建模方法建立励磁功率单元系统模型，阐述了模型参考诊断方法在励磁系统功率单元的具体应用。仿真结果表明，该方法能够有效地诊断同步发电机励磁系统功率单元的主要故障。     

380V厂用电系统优化

四川广安发电有限责任公司300 MW机组厂用电系统部分低压配电动力中心（PC）、电动机控制中心（MCC）及其电源进线开关配置不合理,在机组厂用电故障时,对机组及其辅机设备的运行构成安全隐患。分析了一期300 MW机组380 V厂用电系统存在的隐患及危害,提出了优化方案,确保了机组厂用电的安全供电。     

大容量核电机组投运对电网运行的影响

大容量核电机组在电力系统的投运,既提高了系统的裕度,也提高了系统供电的可靠性水平及资源的效益.一方面,较大的机组容量的投切增大了对电网运行的影响;另一方面,由于核电机组的特殊性,机组对电网运行也提出了更严格的要求.文章从各方面对大容量核电机组投运对电网运行所带来的问题进行了分析,并提出了可能需要采取的相应措施.     

Selection of organic Rankine cycle working fluids in the low-temperature waste heat utilization

In the current study, simulations based on the engineering equation solver(EES) software are performed to determine the suitable working fluid for the simple organic Rankine cycle system in different temperature ranges. Under the condition of various temperatures and a constant thermal power of the flue gas, the influence of different organic working fluids on the efficiency of the subcritical organic Rankine cycle power generation system is studied, and its efficiency and other parameters are compared with those of the regenerator system. It is shown that the efficiency of the subcritical organic Rankine cycle system is the best when the parameters of the working fluid in the expander inlet are in the saturation state. And for the organic Rankine cycle, the R245 fa is better than other working fluids and the efficiency of the system reaches up to 10.2% when the flammability, the toxicity, the ozone depletion, the greenhouse effect and other factors of the working fluids are considered. The R601 a working fluid can be used for the high-temperature heat source, however, because of its high flammability, new working fluid should be investigated. Under the same condition, the efficiency of the organic Rankine cycle power generation system with an internal heat exchanger is higher than that of the simple system without the internal heat exchanger, but the efficiency is related to the properties of the working fluid and the temperature of the heat source.     

二滩水电站PSS对抑制系统低频振荡的作用

二滩电站首台机组发电时通过长６２２ｋｍ的一回５００ＫＶ的输电线路送电，此时等值于１同组与无穷大电力系统相连，呈弱联系，根据电力系统稳定性的要求，其励在系统联合会了ＰＳＳ系统。设ＰＳＳ的目的是当系统出现扰动时为发电机转子转速摇摆提供正阻尼，以增强与电力系统的联系，ＰＳＳ能在系统突然施加一个干扰，如线路退出运行或系统联系较弱和稳定裕度不够时，起到重要作用。二滩机组ＰＳＳ增益设定是根据现场试验进行调整，     

桐柏抽水蓄能电厂机组负序电流保护改进

介绍了桐柏抽水蓄能电厂大容量发电电动机负序电流保护整定配合,讨论了其在实际运行中存在的问题.针对桐柏电厂机组内桥接线方式下的特点,提出符合系统需求和机组特性的负序电流保护整定改进方案,以满足大容量机组对保护选择性、灵敏性和可靠性的要求.     

基于社会效益最大化的黑启动电源规划

通过论述电力系统恢复的步骤和策略,分析了黑启动电源对电力系统恢复的影响。建立了以社会停电损失最小为目标的黑启动电源规划模型,用以优化黑启动电源的安装位置及容量。模型考虑了2种情况,分别研究黑启动电厂对口支援非黑启动电厂和互联电网情况下黑启动电源规划问题,并考虑了用户停电损失率随时间变化的问题。应用遗传算法求解互联电网黑启动电源规划问题,并给出算例对所提出的规划模型进行了验证。最后总结了影响黑启动电源布置的因素。     

浙江龙泉梅村水库电站自动化改造研究

梅村电站更新改造中采用的NDK-2001低压机组智能控制系统是专门针对0.4kV的低压机组开发的自动控制系统。该系统采用工控单片机系统,将数字处理技术和模拟处理技术相结合,系统高度集成,一套控制系统就实现了机组自动开停机控制、频率调节、自动准同期、发电机保护和发电机电气参数测量、温度测量等功能,具有控制系统结构简单紧凑、运行维护容易的特点。     

抽水蓄能电站日调节与周调节方式运行优化模型

提出了抽水蓄能电站的日调节与周调节方式运行优化模型。按电站抽水 — 发电循环效益最大化，满足电力电量平衡条件，满足库容、发电出力及抽水功率等限制条件，建立了基于混合整数线性规划的算法模型，可应用于电源规划的系统运行模拟，优化抽水蓄能电站的运行方式和发电计划;分析了系统发电成本、电站规模、负荷特性等对电站运行的影响。通过计算实例对算法模型的实用性、有效性做了说明。