Current Situation and Prospect of Pumped-Storage Hydropower Plant in China

With the rapid development of national economy in China, pumped-storage power plant(PSPP) has developed very fast for its special stable and dynamic benefits in recent years.Because of the ever-increasing power load and its peak-to-valley ratio, customers have higherexpectation for the securityand quality ofpower supply. PSPPs are playing a role in load regulation,energy saving and reliable operation of power girds with its unique peak-shifting character.

Study on integrated development and hybrid operation mode of nuclear power plant and pumped-storage power station

The nuclear power plant is suitable for base-load operation, while the pumped-storage unit mainly gives play to capacity benefit in the electric power system;hence, the integrated development and hybrid operation mode of the two can better meet the needs of the electric power system. This article first presents an analysis of the necessity and superiority of such mode, then explains its meaning and analyzes the working routes. Finally, it proposes the business modes as follows: low price pumping water electricity plus nuclear power in the near term;nuclear power shifted to pumped storage power participating in market competition in the middle term;and, in the long term, nuclear power shifted to pumped storage power as primary and serving as an electric power system when needed.

融合改造的混合式抽水蓄能与风电联合运行短期调度模型

依托规模庞大的常规水电增建混合式抽水蓄能是加快抽蓄发展的重要途径。相比传统抽蓄电站,融合改造的混合式抽水蓄能电站具有水力联系更紧密、抽-发工况转换更复杂、“量调并重”角色更鲜明等显著特点,为探索其运行模式,本文提出一种融合改造的混合式抽水蓄能与风电联合运行短期调度模型。该模型以联合体整体收益最大为目标,以机组为最小调度单元,针对常规机组和抽蓄机组的差异化运行特性分别精细化建模,并引入状态变量实现运行状态的解耦与关联切换。在模型求解方面,通过线性化方法及建模技巧将原模型转换为混合整数线性规划(Mixed Integer Linear Programming,MILP)模型,最后在JAVA环境中采用CPLEX工具进行求解。以西南某流域电站为参考构建的应用示例验证了本文模型和求解方法的有效性,可为推进常规水电站的融合改造提供借鉴。

葛洲坝电站非汛期日优化发电计划编制方法初步研究

以水电厂机组为单元建立了葛洲坝电站的发电模拟模块,据此采用经模拟退火算法改进的混合遗传算法,建立葛洲坝电站非汛期厂内日优化发电调度模型,并将其应用到葛洲坝电站发电计划编制工作中,实现枯水期厂内发电流量的优化分配.采用2007年4月1日至4月10日实际资料对该模型进行验证与校核,结果表明模型模拟单日平均出力的精度达98.84%.经优化10日最多可新增电量1270×104kW.h.

水光互补电站建设分析

以龙羊峡水光互补并网光伏电站为例,分析水光互补电站建设的条件及关键问题,利用水电资源的调节性能优化光伏发电,为电网提供优质电能。

彭水水电厂厂内经济运行系统设计与实现

针对重庆大唐彭水水电厂优化运行管理的迫切需求,以双层嵌套的混合粒子群优化模型为基础,提出了基于.NET Framework的彭水水电站厂内经济运行系统解决方案。详细论述了彭水水电厂厂内经济运行系统架构及实现技术,根据彭水电厂实际需求设计了系统的功能结构。实际运行情况表明,该系统稳定可靠、界面友好、交互性强,能够有效提高水电站运行管理水平,具有良好的工程应用价值。

基于混合TPA的水电站厂房振动传递变异性研究

为解决水电厂房原型测点数量不足和结构参数不确定性问题,在建立水电站厂房有限元模型的基础上,以实测与仿真计算频率响应函数(FRF)为核心,搭建混合振动传递分析(TPA)模型,推导水电站厂房水力、机械振动荷载识别、路径贡献率表达式,引入质量、刚度的变异性,建立考虑参数变异性的水电站厂房耦合系统振动传递特性分析方法。在验证方法有效性的基础上以实际电站为例,分析参数不确定性影响,为全面分析水电站厂房振动传递参数变异性提供理论基础。