Results 71 to 80 of about 645 (179)
An analysis method for the maturity of power technology based on literature search [PDF]
China’s power industry has gone through a period of rapid development. With the transformation of the global energy structure, the development goal of building a new type of power system was proposed, which pointed out the direction for the next stage of
HE Dongshan +5 more
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, 2019 采用分布式综合能源系统取代数据中心的传统供能系统,是降低数据中心运行费用的有效措施。考虑A级数据中心的供能可用度,设计了一种分布式综合能源系统,并基于混合整数非线性规划方法,建立了综合经济和环境效益的多目标优化设计和调度模型,选取ε-约束法对相互制约的多目标问题进行处理,在通用代数建模系统(GAMS)中建模并调用LINDOGLOBAL求解器进行优化求解。采用多维偏好分析线性规划决策法从非劣解集中选出最终解,并通过逼近于理想解的排序方法进行验证。算例结果表明 ...
刘成运 +4 more
core
Jianzhu Gangjiegou Jinzhan水上柔性光伏支架可采用单层悬索、双层索系、索网支撑等结构形式。针对北京良乡污水处理厂结构跨度大、造型复杂、施工难的特点，选择双层索系结构光伏支架，该支架由承重索、抗风索和竖向连接索组成。该结构通过对双索和摇摆柱的设计，使结构具有跨度大、自重轻以及拉索受力均衡的优点。在对索结构进行合理的选型设计时，基于等效用钢量的方法对三种索结构设计方案的成本效益进行了评估。对经济效益较好的双层索系结构光伏支架进行了静力性能及参数分析。考虑到地面施工条件受到限制，研究了适合该工程的水上施工方法及关键技术。结果表明 ...
杜壮壮 +5 more
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Dianci bileiqi大量的分布式光伏接入改变了传统配电网结构和潮流，使配电网接地故障特征发生改变。通过分析光伏并网容量、位置、光伏出力波动性及并网高次谐波对接地故障的零序电压的影响，发现对比光伏接入前，零序电压的各类时频域特征受到了不同程度的影响，甚至出现了部分接地故障时频域特征混淆的问题，造成故障辨识难度加大。对此，本文提出基于零序电压的VMD-MPE-CNN接地故障辨识算法。首先，采用VMD-MPE算法对零序电压信号进行分解，并计算本征模分量的多尺度排列熵得到故障特征矩阵。然后 ...
龙国华 +5 more
doaj
Performance Analysis and Experimental Study of a Kind of Thin and Light Photovoltaic/Thermal Collector [PDF]
ObjectivesThe demand for energy in outdoor work and survival is increasing, and there are some significant shortcomings in the existing conventional energy supply methods, such as the need to carry a large amount of fuel for conventional generators and ...
CHEN Jianbin +4 more
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Gaoya dianqi为应对分布式光伏大规模接入配电网造成的净负荷波动问题，提出一种考虑需求响应的储能双层规划方法。首先，分析配电网在不同光伏渗透率下的灵活性需求以及各类灵活性资源的运行特性。其次，通过主成分分析法和分层聚类算法得到典型光—荷场景。然后，建立考虑需求响应的配电网储能双层规划模型，其中上层规划层以综合成本最小为目标优化储能的规划方案；下层运行层以运行成本最小为优化目标，考虑储能、价格型需求响应以及可中断负荷等可调控对象，制定各典型场景下的配电网运行策略。同时，为有效求解双层规划模型 ...
周燕 +6 more
doaj
Spatial Load Forecasting Method Based on Multiscale LDTW and TCN [PDF]
Spatial Load Forecasting(SLF) provides necessary guidance for the rational construction and use of substations and feeders, and it has become an indispensable aspect of distribution network planning.
Yue MA, Mi WEN
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Economic evaluation of biomass pyrolysis liquefaction technology based on life cycle assessment [PDF]
In the context of the "dual carbon" goals, exploring the production of bio-gasoline and bio-diesel through a biomass energy and pyrolysis liquefaction production chain holds significant potential.
GU Minyan +5 more
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Photovoltaic Output Prediction Based on Improved Long Short-Term Memory Network Using White Shark Optimization Algorithm [PDF]
ObjectivesIn order to ensure the safety, stability, and economic operation of the power system after photovoltaic integration, a photovoltaic power prediction model based on improved long short-term memory (LSTM) network using white shark optimization ...
LI Lanqing +5 more
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