三峡水轮机转轮焊后热处理

本文总结了对三峡马氏体不锈钢转轮焊后热处理所作的热处理工艺研究及应用。     

三峡水轮机转轮翻身工具

本文针对三峡转轮翻身工具,从方案的确定、受力分析、刚强度分析、起吊方式及吊索具选用等方面进行了详细论证,阐述了转轮翻身工具在大件起吊过程中的重要性。     

三峡水轮机转轮质量检验与管理方法研究

本文介绍三峡转轮制造质量检验与管理。主要就质量控制过程中的重点和难点、大尺寸和重要的形位公差的检测、质量控制的特点进行了较为深入的探索。     

三峡右岸电站ALSTOM机组转轮裂纹处理

在对三峡右岸电站首台投产的ALSTOM机组检修时,发现有4张转轮叶片焊缝存在裂纹缺陷。通过对裂纹性质的分析,认为裂纹主要是由于设计及制造工艺不良所引起。通过制定合理、有效的修复工艺,进行现场修复后,彻底地消除了缺陷,为机组安全、稳定运行提供了有力的保障。     

三峡水轮机组转轮裂纹产生原因及其预防措施

从设计、制造、材料和运行上分析了造成三峡水轮机组转轮裂纹的主要原因,并根据实践经验,提出了相关的预防措施和建议,为有效控制和减少水轮机转轮裂纹提供一定的借鉴。     

三峡水轮机转轮无损探伤工艺

本文根据三峡电站水轮机转轮结构特点,结合材料的机械特性、焊接工艺的特殊要求及转轮在运行工况下常易出现的一些问题,分析拟定了切合实际的无损探伤方法并从探伤的专业角度解析了这些方法的必要性、合理性及可操作性。文章还重点介绍了大厚度变截面斜射波多角度综合探伤检查、高温状态下焊缝清根部位的磁粉探伤、渗透探伤技术,以及根部焊至一定厚度时所进行的纵波探伤技术。     

大变幅高水头机组转轮裂纹处理

通过建立了运行工况分析、机理分析、CFD流场计算、流固耦合数值仿真计算、材料分析、原型试验验证等五位一体的大变幅高水头转轮裂纹成因分析的技术方法和处理措施,解决了光照水电站转轮裂纹问题,并为其他电站转轮裂纹处理提供了借鉴和参考依据.     

三峡水轮机焊接材料及工艺研究

介绍三峡水电站水轮机的焊接材料和焊接工艺的理论分析、试验研究及应用结果。图4表22参5     

The electric scheme option for Three Gorges Hydropower Station and the System

EDlTOR'S NOTE: We had published an article on Vol.1, No.1 of this Journal entitled "A study on the schemes of power trons-mission from Three Gorges Project to East China", in which various possible options were discussed from the researcher's point of view.This paper we present here discusses the same problem but from the planner/designer's point of view. These different viewpoints aresurely helpful to the final decision of the huge project. We expect some further discussions on this problem to be published on ourJournal.     

三峡右岸电站机组测流系统

通过对三峡右岸机组测流系统方案、实施过程的简单介绍，分析对比了国内外3个主要超声波流量测量系统的特点，总结了国内超声波流量测量工作取得的最新成果;从实际应用的角度出发，提出了水电机组超声波测流系统需要进一步改进的地方，希望对大管径水电机组超声波流量测量系统的设计和工程实施起到一定的指导作用。     

Automatic Voltage Regulator Test of Three Gorges Right Bank Hydropower Station

Based on real-time digital simulations(RTDS),a laboratory environment similar to the real-time operation situation of the Three Gorges Hydropower Station is established.Then,the causes for the power fluctuation of the second generator by errors in the rotor rotating speed calculation are found,and the tuning method of the speed related parameters are given.The damping and reverse tuning characteristics of power system stabilizers(PSSs)in the digital automatic voltage regulator(AVR)are compared and investigated in the frequency range of 0.18-1.1 Hz.The efficiency of the proposed tuning method for ensuring power system stability is verified by RTDS.Finally,field tests show the validity of the laboratory test results.     

Operation Analysis on T&D Equipment in Three Gorges LeftBank Hydropower Station

The paper outlines the Yangtze Three Gorges water conservancy complex. It describes the power transmission and distribution equipment in the Three Gorges LeftBank Hydropower Station, especially large high-voltage distribution devices. It elaborates the measures for suppressing GIS over-voltage and the tests on VFTO, besides technical measures to ensure safety and stability of power system in the station. It also makes some analyses and summaries about the problems encountered in operation of the equipment.     

三峡左岸电站发电机定子纯水冷却系统分析及改进

针对三峡左岸电站发电机定子纯水冷却系统存在的电磁泵频繁烧损和内部控制流程设计缺陷等问题,进行了大量的研究和试验,实施了采用软启动方式、改造膨胀水箱、修改纯水系统控制逻辑等一系列改进措施,有一定的工程有效性。     

A Study on Additional Electric Energy Accommodation of Three Gorges Hydropower Station

Considering the additional electric energy generated after the full operation of the underground hydropower station, the electric energy accommodation of the Three Gorges Project (TGP) is reviewed. It is focused on the additional electricity accommodation, based on the research at the early stage. The electric energy accommodation solutions are recommended as that, based on the cost-benefit analysis of the power distribution area, the additional electric energy of the Three Gorges should be given priority to meet the needs at the supply end of Hubei and Chongqing. The results of this research has a reference value on the implementation of the Three Gorges electric power accommodation, after the further optimization of the transmission curves in both wet and dry seasons.     

三峡左岸电站机组状态监测趋势分析系统及应用

讨论了基于浏览器/服务器（B/S）模式构建多层综合分析机制对电厂监测数据进行分析的数学原理和实现方案，根据分析结果可以提前发现发电机组或其他电力设备的异常状况，从而在很大程度上降低电厂事故发生的可能性和运营成本。重点讨论了在大型监测数据库基础上构建综合趋势分析平台的相关问题;同时，结合对油槽设备缓慢漏油、轴瓦损坏造成瓦温缓慢上升等隐患的预报，讨论了时间序列趋势分析模型的实现，以及对机组异常状态监测数据进行有效分析的可行方案。     

三峡电站机组进水口快速工作门

作为水轮发电机组和压力钢管的重要保护设备,机组进水口快速工作门起着至关重要的作 用。三峡电站单机容量巨大,进水口快速工作门在事故情况下的正确动作将直接保障三峡机组的 安全。三峡电站在总结国内外经验的基础上设计并应用了可靠有效的快速闸门。文中主要介绍了 三峡电站进水口快速工作门的结构配置、控制系统、控制方式、日常运行操作及故障情况下的应急 处理方法。经过运行实践检验,三峡进水口快速工作门动作稳定可靠。