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.

Prospect of new pumped-storage power station

In this paper, a new type of pumped-storage power station with faster response speed, wider regulation range, and better stability is proposed. The operational flexible of the traditional pumped-storage power station can be improved with variable-speed pumped-storage tech no logy. Combined with chemical en ergy storage, the failure to achieve sec on d-order response speed and the insufficient safety and reliability of pumped-storage power units could be solved. With the better solar en ergy and site resources, the in teg rated performance can be improved by an optical storage system in stalled in future pumped-storage stations. Through the characteristics analysis of the new type of pumped-storage power station, three types of optimal station locations are proposed, namely, the load concentration area, new energy concentration area, and ultrahigh- voltage direct current receiver area. Taking the new pumped-storage power station as an example, the advantages of multi-energy cooperation and joint operation are analyzed. It can be predicted that the frequency and load regulation of the power grid will be more flexible, and the service capacity to the main power grid will be much stronger in the future.

Zhanghewan Pumped-Storage Power Station under construction

Zhenghewan Hydropower Station the first large Pumped-storage hyddropower project in hebei province

黑麋峰蓄能电站水泵水轮机模型验收试验及性能分析

对黑麋峰抽水蓄能电站水泵水轮机模型验收试验结果进行了分析,其能量特性、空化特性、压力脉动特性等各主要指标满足合同规定及性能保证要求,为真机的设计、制造、安装及运行提供了可靠的依据。同时,对水泵水轮机存在的"S"特性进行了分析,并提出了其影响因素。

黑麋峰抽水蓄能电站岔管区渗控效果评价

黑麋峰抽水蓄能电站因地下洞室埋深大,承受外水压力大而造成渗流、渗透变形等问题。基于饱和二维渗流理论,对高压岔管区建立二维有限元模型,计算环向帷幕和纵向帷幕两种防渗方案下高压岔管区外水压力和排水廊道的渗漏量,评价了两种防渗方案的防渗效果,并给出渗控建议。结果表明,高压岔管区的防渗处理比较复杂,采用环向帷幕对洞周围岩进行高压灌浆加固处理能大大提高围岩的完整性,优于纵向帷幕方案。

钢筋混凝土高压岔管区断层岩体高压压水试验方法

针对黑麋峰抽水蓄能电站高压岔管区断层带空间几何特性,研究了陡倾角断层岩体高压压水试验方法。通过对高压压水试验成果进行分析,得到了断层岩体渗透稳定的渗控设计参数,了解了钢筋混凝土高压岔管区断层岩体的渗透稳定性,并验证了高压压水试验方法的正确性。

黑麋峰抽水蓄能电站下水库洪水调节分析

抽水蓄能电站洪水调节计算与常规水电站差异较大,通常发电流量对抽水蓄能电站下水库洪水调节成果影响明显。根据黑麋峰抽水蓄能电站的特点,提出了电站下水库洪水调度规则,并进行了电站满发流量与天然洪水不同组合的洪水调节计算。对电站下水库洪水调度规则及洪水调节成果的分析探讨,可为类似抽水蓄能电站调洪计算提供借鉴。

黑麋峰抽水蓄能电站变频启动装置的自动控制

SFC系统是抽水蓄能电站有别于常规水电站的最具关键性设备之一。主要介绍了黑麋峰抽水蓄能电站SFC变频启动装置配置及机组电动工况下SFC启动时的一次控制回路、自动控制的流程。

黑麋峰抽水蓄能电站金属结构布置与设计

对黑麋峰抽水蓄能电站金属结构设备的布置与设计进行了介绍,并着重对抽水蓄能电站与常规电站不同的金属结构设备的设计进行了分析,总结了与抽水蓄能电站金属结构设备设计的有关问题及解决措施,以便为今后抽水蓄能电站金属结构设备的布置与设计提供参考。

黑麋峰抽蓄合理利用小时数回算系统设计

基于湖南电网水火电调峰困难的现状,结合黑麋峰抽蓄运行特性,设计了可用于黑麋峰抽水蓄能电站利用小时数回算系统。该系统充分考虑了水电站、火电、风电、联络线等不同电源的数据存储特性,完成了相关数据的有效整合。实现了在任意给定时段下黑麋峰抽蓄合理利用小时数的快速计算,以及启用黑麋峰抽蓄参与调峰所能带来的电量效益。其结果可用于评估黑麋峰抽蓄调度合理性,也有助于通过分析历史数据提高日后黑麋峰抽蓄的调度水平。