共查询到19条相似文献,搜索用时 359 毫秒
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在抽水蓄能电站建设爆发式增长背景下,迫切需要在提高产品设计质量的同时提高设计效率。因此,基于3DEXPERIENCE平台,探究一套可行的抽水蓄能电站枢纽三维快速协同设计方法,并结合某抽水蓄能电站进行了实际应用。首先总结专业基础知识,构建抽水蓄能电站水工结构标准构件库;其次采用自顶向下的骨架模型驱动方式,各专业间协同设计,快速形成不同的设计方案,为方案对比分析提供依据。基于该方法,某抽水蓄能电站的优化设计方案最大坝高降低10余米,整体工程投资降低1.4亿元,表明所探索的从原始地形处理到方案快速设计,最终完成方案对比分析的抽蓄电站枢纽三维快速协同设计方法,可为抽水蓄能电站的建设提供设计参考。 相似文献
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宝泉抽水蓄能电站每台机组蜗壳上游进口段设置一台球阀。球阀在机组启动、运行期间起到截断和导通水流的作用,同时在水轮机导叶无法关闭时能够动水关闭,保障机组和地下厂房安全。对宝泉电站球阀的结构进行分析,掌握球阀枢轴轴套的结构及工作性能,并针对性地进行完善和改造,以提高球阀的整体安全运行可靠性 相似文献
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为提高梯级水电站调度运行效益、优化水库水位变化过程、减少弃水,考虑湖北省某流域梯级水电站规划新增混合抽水蓄能电站,将抽水蓄能机组作为水电站发电备用机组或利用其抽水工况实现梯级水电站年发电量的最大化。针对不同来水频率下服从皮尔逊Ⅲ型分布的天然入库,提出逐步优化算法(POA)与水位廊道耦合方法,求解含混合抽水蓄能的梯级水电站调度模型,能有效保证在多约束条件下构建发电量最大的中长期调度规则。算例结果表明,新增混合抽水蓄能电站后不仅可增加本级水电站发电量,还可提高抽水发电转换效率、减少弃水,为梯级水电站规划新增抽水蓄能电站提供参考。 相似文献
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《全球能源互联网(英文)》2021,4(5):465-475
Base station operators deploy a large number of distributed photovoltaics to solve the problems of high energy consumption and high electricity costs of 5G base stations. In this study, the idle space of the base station’s energy storage is used to stabilize the photovoltaic output, and a photovoltaic storage system microgrid of a 5G base station is constructed. Aiming at the capacity planning problem of photovoltaic storage systems, a two-layer optimal configuration method is proposed. The inner layer optimization considers the energy sharing among the base station microgrids, combines the communication characteristics of the 5G base station and the backup power demand of the energy storage battery, and determines an economic scheduling strategy for each photovoltaic storage system with the goal of minimizing the daily operation cost of the base station microgrid. The outer model aims to minimize the annual average comprehensive revenue of the 5G base station microgrid, while considering peak clipping and valley filling, to optimize the photovoltaic storage system capacity. The CPLEX solver and a genetic algorithm were used to solve the two-layer models. Considering the construction of the 5G base station in a certain area as an example, the results showed that the proposed model can not only reduce the cost of the 5G base station operators, but also reduce the peak load of the power grid and promote the local digestion of photovoltaic power. 相似文献
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双碳目标下,电力供给将从以煤电为主导转化为以新能源为主体,加快煤电机组的调峰调频改造是支撑新能源应用快速发展和保障电力系统安全的关键。分析了煤电机组调峰调频技术的现状,指出现阶段提升电力系统灵活性的有效措施是进行煤电灵活性改造,但对于中长期电力系统灵活性需求来说,需要着重发展气电及储能等灵活性电力资源;储热调峰技术、抽水蓄能调峰技术、压缩空气储能调峰技术、液流电池调峰技术、飞轮储能调频技术、电磁储能调频技术和电化学储能调频技术,为后续煤电机组调峰调频技术的研发提供参考。 相似文献
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为了有效缓解电网突然出现的电力不平衡现象,同一个抽水蓄能电站不同水力单元机组同时分别发电及抽水运行,是对抽水蓄能运行及调度方式的一个重大创新措施。以某抽水蓄能电站上库为例,通过数学模型研究上库进/出水口在同发同抽工况下的库区水流流态、流道的水力特性、库区漩涡特性等水力参数的变化规律。结果表明,VOF方法可很好地模拟抽水蓄能同发同抽过程;同发同抽工况下,库区内进出水口附近局部水流流态与单向运行工况基本一致,但是两进/出水口之间形成连通的水流通道,库区内形成大范围横向流动,致使抽水单元大部分水流再次进入发电单元。 相似文献
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分析了在总装机容量增大及新能源比重激增的背景下,电网调峰机组选择存在的问题以及国内抽水蓄能电站没有同步发展的原因,研究了抽水蓄能电站作为调峰电源的经济性变化。指出,改变以往调峰电源选择思路,加快抽水蓄能电站发展,推动电网辅助服务定价是实现节能减排和加快新能源发展的最优选择。 相似文献
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Dominik Surek 《能源与动力工程:英文版》2013,(11):2037-2044
The electric energy which is generated by wind power plants depends on the wind speed and exceeds with strong permissible wind speed the electric energy requirements of the country. In order not to reduce this electrical energy, it must be stored. The sensible energy storage is currently the pumped storage power plants. As the mountain ranges for conventional pumped storage power plants with drop heights of H 〉 600 m are strictly limited, the development of low potential pumped storage power plants has begun. Increasing the capacity of pumped storage power plants with regard to the wind power plants is urgently needed. In this paper, it is shown using the example of an unneeded port facility, how a port facility can be used after low conversion as a test facility for low potential pumped storage power plants and at the same time for the testing of hydro-kinetic turbines. This type of pump storage power plants does not save the energy due to large drop heights, but primarily due to the large volume flow of water. 相似文献