幕墙薄膜光伏发电系统电气设计探讨

以某大型公共建筑屋面彩色玻璃幕墙薄膜光伏发电系统为例,阐述由5种渐变颜色光伏组件构成的光伏发电系统的设计,解析多颜色光伏组件串并联的计算、校验方法,测算系统发电量及进行节能分析、使用的安全性等探讨.     

浅析城市综合体的供配电系统方案设计

通过某工程实例,从整体供配电的合理性和经济性等方面阐述了上海某城市综合体的负荷计算、供配电系统、应急电源系统及光伏发电系统等内容,并引入了LEED等级及绿色节能的概念。     

光伏发电技术在建筑工程中的应用

从国家节能减排的政策方针人手,论述了光伏发电系统的原理、分类、运行方式及其关键技术,阐述了太阳能光伏发电系统在建筑工程项目中的应用型式、光伏建筑一体化概念及设计要点,希望籍此技术基础与工程设计问题的研究,对广大设计人员在建筑工程项目中合理高效的利用光伏发电技术起到指导作用。     

民用建筑电气系统碳排放计算及分析

针对民用建筑碳排放的计算方法、碳排放因子选取及核算边界等重点、难点问题进行分析，并结合浙江省标《民用建筑碳排放计算标准》的编制，提出民用建筑电气照明、插座、电梯、光伏发电等系统碳排放计算范围和公式。     

某太阳能光伏并网发电工程的分析

研究了太阳能光伏发电系统的组成及光伏发电基本原理,简单概述了光伏发电的优点和局限性,结合实例对太阳能光伏发电工程进行了分析,得出现阶段太阳能发电系统可以并网运行,但不能倒送电的结论。     

利用光伏发电制冷的冷藏车设计选型

介绍太阳能冷藏车(配备了两台压缩机,分别由汽车发动机以及由光伏电池板组件供电的电动机带动,两台压缩机共用一套制冷环路)的太阳能光伏发电系统。计算冷藏车厢的冷负荷,对压缩机、太阳能发电系统设备(包括蓄电池、光伏电池板组件、光伏控制器、逆变器、变频器)进行选型,测算利用太阳能发电制冷的节油量。     

浅谈太阳能光伏发电系统原理及设计与应用

太阳能作为可再生、最原始、最安全、最环保、最直接的新能源,越来越受到人们的青睐,太阳能光伏发电正成为我国可再生能源的一支生力军。文章主要介绍太阳能光伏发电系统的基本工作原理、组成及特点,并探讨太阳能光伏发电系统的设计与应用。     

沪滇临港昆明科技园分布式光伏发电项目设计研究

以实际工程为例,从光伏组件选型、逆变器选型、光伏组件方位角和倾角确定、阴影遮挡计算、光伏组串设计和接入方案确定等方面,对分布式光伏发电系统设计的要点和难点进行分析,完整展示分布式光伏发电系统设计过程。     

太阳能光伏发电概述及发展前景

本文概述了全球及我国的能源现状,表明了光伏发电的重要性和前景.文中详细介绍了太阳能电池的原理和工作特性,并列举出当今市场上主要的三种太阳能光伏发电系统,对其中的应急防灾独立/并网混合型光伏发电系统进行了着重介绍.最后指出了国内外光伏产业发展现状,并对未来我国太阳能光伏发电技术进行了展望.     

光伏发电与建筑的有机结合

本文介绍了光伏发电的概念及系统构成，光伏发电与建筑相结合的优点，光伏发电的控制，以及光伏发电与建筑相结合的意义，有助于推动绿色建筑的发展和建筑节能。     

分布式光伏并网系统运行中存在的问题

光伏建筑一体化作为分布式光伏电站的一种存在形式,越来越受到关注。分布式光伏系统接入配电网运营后,改变了传统电网的结构,从过去的无源电网转变为有源电网。由于光伏发电系统输出的电能具有间歇性、不稳定性等特点,必然会对所接入配电网的电能质量、潮流分布、短路电流、保护协调、孤岛效应、光伏逆流等方面产生不同程度的影响。根据国家电网公司颁布的《分布式电源接入系统典型设计》的要求,针对分布式光伏并网系统运行中存在的问题,提出了改进措施和具体的技术要求。     

The strategic siting and the roofing area requirements of building-integrated photovoltaic solar energy generators in urban areas in Brazil

Building-integrated photovoltaic (BIPV) generators are typically small and distributed solar power plants that occupy virtually no space because they are part of the building envelope, and they generate power at point of use. A more widespread use of grid-connected photovoltaics (PV) is hindered by a number of reasons which include the declining, but still high costs of the photogenerated kilowatt hour, and the lack of knowledge about the benefits of distributed generation with PV in the urban environment. When strategically sited, PV generators integrated to building façades and rooftops in urban areas at limited penetration levels can benefit local feeders with these distributed “negative loads”. A number of studies have been published, with learning curves demonstrating the cost-reduction potential of large-scale PV production, and in some markets the cost of PV electricity is approaching residential tariffs, the so-called grid parity. Due to the intermittent nature of the solar radiation resource, PV is considered non-despatchable power, but under some conditions, in sunny urban areas with electricity load curves dominated by air-conditioning loads, there is a high correlation between PV generation and feeder loads. In these situations, a considerable fraction of a given PV generator can be considered despatchable power. In this work we assess the potential of building-integrated, grid-connected PV generation in the state capital Florianópolis, in South Brazil. The deployment of six different commercially available PV technologies is compared with total roof area availability, solar generation profiles, and local feeder load curves for a selected number of urban areas in the city. Our results demonstrate the advantages of strategically siting PV generators in the urban environment.     

A proposed framework for dynamic modelling of photovoltaic systems for DG applications

Dynamic modelling and simulation is essential to predict the overall electrical performance of photovoltaic (PV) systems. PV simulation models in the literature are not suitable for dynamic analysis with decentralised generation (DG) applications. This article proposes a framework for PV system dynamic modelling and simulation process. This framework presents the steps required to model the process of solar power generation, reflecting the environmental variables affecting the generation process. Based on the framework steps, a computer simulation model is developed in MATLAB-Simulink of the PV generator, and validated by comparing the developed PV electrical performance characteristic curves with those of the manufacturer's data sheet and the ones developed by commercial software. The last step of the proposed framework is dedicated for testing the developed PV model for grid-connected operation. The proposed framework resulted in a simulation photovoltaic decentralised generation model which constitutes a computer-aided design tool that is helpful for real-world solar energy engineering.     

太阳能光伏发电系统的技术发展

太阳能PV系统从军用到民用、从离网系统到并网系统已经走过了半个多世纪的历程,效率不断提高,技术日益完善,发电成本逐年下降。随着科技的发展,大规模利用PV技术进行太阳能发电已经蓬勃兴起,而大量分散型PV电源的入网又需要发展微网系统、智能电网系统和全球PV供电系统。     

并网光伏系统设计简析

简要介绍常见并网光伏系统设计依据、常用软件、组成部分及其原理,以及光设计中需要把握的原则、注意事项和一些经验教训,包括光伏支架、光伏方阵与场地的设计考虑,并网逆变器的选择、并网形式的选择、防雷接地等。     

The challenging economics of US residential grid defection

Declining costs for solar photovoltaics (PV) and excitement about new technologies have led to speculation that self-sufficient PV/battery storage systems will soon become competitive with traditional electricity service. We compare a grid-tied residential solar system with an off-grid solar-plus-battery system at 1020 US locations, and calculate three effects of “grid defection” for each: the private net costs to the homeowner, the change in system generation costs, and change in system emissions. For the average US location, an off-grid solar system is almost double the price of grid-connected solar, is associated with higher system generation costs, and has no emissions benefit.     

高速公路光伏收费站设计——以山西省太原地区高速公路收费站为例

太阳能是一种取之不尽、用之不竭的可持续能源,对它的研究与应用一直受到世界各国的关注。将分布广泛、数量众多的高速公路收费站进行太阳能光伏改造。针对山西省太原市高环城高速公路各出入口收费站雨棚的不同构造方式进行分类探讨,并提出其适宜的光伏应用方式。以松庄收费站为例,提出对其进行光伏改造的设计策略并进行潜力计算与测评,为未来高速公路交通系统中收费站光伏设计应用与潜力测评提供借鉴与参考。     

光伏建筑一体化并网发电系统的智能控制

本文介绍了光伏并网发电系统的组成,并对光伏并网发电中的最大功率点跟踪控制系统、并网电流控制系统以及反孤岛检测系统的实现方法进行了详细的论述。     

光伏发电系统在大型水厂中的设计与实践

结合亦庄水厂项目工程特点和对现有光伏系统的分析对比,最终选择了并网型发电形式和薄膜型光伏组件。详细阐述了光伏发电系统的逆变器和并网点的电气设计,介绍了光伏发电系统中光伏阵列的防腐、结构设计和电气设备的选型、监测的安全保障措施。该系统2018年实际发电量为80. 31×10~4kW·h,综合光伏发电系统衰减速率和实际运行经验等因素进行了能效分析预测,本次光伏发电系统年均发电量约为58. 75×10~4kW·h,年均CO_2减排量约为478. 22 t,年均SO_2减排量约为6. 53 t,年均NO_x减排量约为6. 81 t。证明了光伏发电系统在大型水厂的应用具有较好的发展前景。     

Modelling and simulation-based performance study of a transformerless single-stage grid-connected photovoltaic system in Indian ambient conditions

This paper presents a transformerless single-stage full-bridge inverter for a grid-connected photovoltaic system (GCPVS) and its performances based on power loss, efficiency, and total harmonic distortion for the conditions: (a) seasonal variations of inputs in the photovoltaic (PV) system, (b) variation of grid voltage, and (c) variation of carrier frequency and Modulation Index of sinusoidal pulse-width modulation of the inverter. A typical 2.8 kWp, 368 V nominal PV array-based GCPVS is modelled and simulated to evaluate proper load matching in Indian ambient and grid conditions prior to practical implementation. Detailed analyses on system powers, power losses, efficiency, and harmonic distortions as well as selection of parameters for the simulation model are presented. The impacts of penetrating PV power into electric grid are investigated in order to predict the possible unwanted consequences.