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.

Inconel 740H合金在纯水蒸气环境中的高温氧化行为

通过高温氧化试验研究了Inconel 740H合金在750℃的动态纯水蒸气环境中的氧化行为。结果表明:Inconel 740H合金的氧化增重近似遵循抛物线规律,随氧化时间的延长氧化产物粗大;氧化膜形貌与在干燥空气中氧化的明显不同,但未发现明显的氧化膜开裂和剥落现象;合金氧化100h后形成连续的Cr2O3氧化膜,氧化膜厚度随着氧化时间的增加而增大;氧化1 000h后形成的氧化膜主要由Cr2O3和少量的(Mn,Ni)Cr2O4尖晶石组成,靠近氧化膜的合金内部出现明显的贫铬区,并伴生少量的Al2O3和TiO2内氧化产物。

三峡右岸电站调速系统机械液压部分的特点

本文主要讲述了三峡右岸电站调速器机械液压系统的工作原理及特点。

浅谈动力锂离子电池对纯电动公交车发展的影响

公交车对社会影响巨大,对城市发展起最基本的推动作用。随着全球石油、天然气的逐渐短缺和碳排放标准的推出,纯电动汽车特别是纯电动公交车逐渐得到推广与普及。文章仅就动力锂离子电池存在的一些技术问题进行简要分析,并提出了个人观点。

海水烟气脱硫工艺在火电厂的应用

介绍了海水烟气脱硫工艺的基本原理、工艺流程、设计参数、工艺特点和实际运行效果 。

电去离子技术(EDI)在水处理中的应用

主要介绍了电去离子(EDI)技术在水处理方面的应用:简要介绍了EDI技术去离子的原理及其发展情况;介绍了该技术在电镀废水、锅炉补给水、纯水制造以及去除低浓度重金属废水中的应用及研究现状,并简要介绍了ED I技术今后的研究方向。

抽水蓄能电站纯直流黑启动试验及验证

因内蒙古呼和浩特抽水蓄能电站一直未完善纯直流黑启动流程,无顺控流程可执行,自投产以来一直未完成纯直流黑启动试验。以4号机组为例进行纯直流黑启动试验,首先介绍了试验前技术准备及试验过程。试验成功后,依据本次试验步骤,梳理并完善了纯直流黑启动流程,通过试验验证了该流程的可行性和可靠性。

岸边式抽水蓄能电站水资源回收利用措施研究与探索

西龙池电站为纯抽水蓄能、日调节电站,主要承担电网调峰、填谷、调频及事故紧急备用等任务;电站新建有上、下两个水库,均无天然径流,其中下水库位于滹沱河左岸边龙池沟沟脑部位,为典型的岸边式悬库,且地区多年平均蒸发量大于降雨量,干旱性气候,为提高水电转换效率、满足电网的出力需求以及节约水资源、提高水资源利用效率对电站而言显得尤为重要;目前,经过建设期、运行期的设计及不断优化,电站共建成有下水库补水系统、下水库渗漏水回收系统、库底廊道渗漏水回收系统、厂房渗漏及机组运行水回收系统、自流排水洞渗漏水回收系统、排烟竖井渗漏水回收系统、空调水回收系统7套系统。另外,结合下水库渗漏处理,除水库蒸发量无法控制外,电站最大限度地保证了水资源的回收利用,成为了环保节能方面的亮点。

红沿河核电一期常规岛偏碱性除盐水贮箱内防腐材料的选择及应用

CPR1000机组常规岛用偏碱性除盐水贮箱（SER）通常采用碳钢内涂进口乌龟油的方法防腐，但是乌龟油的施工对环境温度有一定限制，要求底漆8-30℃、面漆10-30℃，而红沿河核电一期SER内防腐施工进度在冬季，环境温度低于10℃，因此需要选择其他合适的防腐涂料。借鉴火电厂除盐水箱内防腐经验，以纯聚脲作为防腐涂料进行溶出物试验。结果表明，在15 d的试验期间，无重金属离子溶出，Na＋、F-和Cl-的质量浓度均小于0.5μg/L，24SO -的质量浓度低于2μg/L，满足SER的防腐要求。与涂覆乌龟油相比，涂覆纯聚脲的3台水箱可节省投资120万元。半年多的商运结果表明，喷涂纯聚脲防腐涂层的SER水箱出水水质满足核岛、常规岛各用户要求。