基于单片机的风光互补系统监控模块设计探究

风光互补发电是一种优秀的清洁能源供电方式,但是由于系统多采用铅酸电池储电供电,系统的寿命也会受限于充放电控制的精确性。本文提出的风光互补智能控制系统的主要功能是数据采集、处理和蓄电池充、放电控制。     

浅谈风光储能发电系统在无人值守高速公路收费系统的应用

高速公路收费系统一般处于城市的郊区,为了保证收费的正常进行一般需要建设UPS系统。采用风光互补储能供电,可解决UPS利用率低以及未来低强度人工干预收费的需求。风光储能发电系统利用风能和太阳能资源的互补性,很好的解决了单一的太阳能或者单一风能不能够提供持续的能量来源的问题,符合国家未来新能源产业发展趋势,具有很好的应用前景。     

风光互补供电技术在3G基站的应用

现如今,移动通信已经普及,尤其是3G通信的发展速度更是无可比拟。3G基站的建设已经不仅限于城市内,城镇乡村,山区也随之发展起来。然而偏僻的山区的3G基站供电问题已成为亟待解决的重要问题。为了解决这一问题,风光互补供电技术诞生了,其主要是利用风能和太阳能之间互补的特性,因此是一种性价比较高的新型发电系统。本文通过对风光互补供电技术的原理及特点进行分析,从而提出了一套合理、可靠的3G基站供电系统设计方案。     

基于自主创新的风光互补发电实训系统设计与实现

风光互补发电系统是利用风能和太阳能资源的互补性,具有较高性价比的一种新型能源发电系统,具有很好的应用前景。本文设计了一种工业级模块化风光互补发电实训系统,包括能源模块、风光互补发电控制模块及监控模块。其中光伏发电系统采用双轴追日支架,基于PLC控制,可时刻保持光伏板正对太阳,可提高光伏发电系统发电效率30%。该实训系统既可以满足新能源装备技术专业的项目课授课需要又可以满足教师的科学研究需求。     

浅析风光互补发电系统

研究了风光互补发电系统的发展过程及目前国内外的研究情况,列举出风光互补发电系统的几个应用前景,并为该系统的推广提出了几点建议。     

连载16：风光互补供电技术

采用风光互补供电系统的目的是为了更高效地利用可再生能源,实现风力发电与太阳能发电的互补。中国西北、华北、东北地区冬、春季风力强,夏秋季风力弱,但太阳辐射强,从资源的利用上恰好可以互补,因此在电网覆盖不到的偏远地区或海岛利用风光互补供电系统是一种合理和可靠获得电力供应的方法。主要介绍风光互补供电技术的工作原理、主要特点和优势,提出风光互补供电技术应用时应注意的事项和适用的条件和场合,并提供实际使用的案侈4。     

互补联合的风光发电系统分析

阐述风光互补发电的特点,风光互补联合发电原理,系统的设计与应用,包括系统设计、设计模型、系统实现流程,保证联合发电功率与最终输出的功率之间相互守恒。     

混合储能在风光互补发电系统中的能量管理与控制策略

储能技术在风光互补发电技术中的应用使得风光互补发电技术得到了进一步完善,各个部分的控制更加合理、有效,系统更加稳定、安全,并且使用效率及寿命得到了提高。通过仿真验证了一种蓄电池与超级电容混合储能结构,在这种结构中通过控制DC/DC变换器将蓄电池的高能量密度及超级电容的高功率密度的特点相结合,并且运用滑动滤波器进行二者的能量分配,同时通过DC/DC变换器达到对各储能部分实时控制的目的,从而提高了混合储能系统的灵活性与实用性。     

风光水联合发电系统多目标优化运行策略研究

本文针对风、光发电并网功率波动性较大以及风光资源浪费的问题,基于风光水互补特性,构建了风光水互补发电系统拓扑结构;以并网波动指数最小、风光丢弃率最小以及电站经济收益最大为目标函数,综合考虑风光水电厂机组的各种约束条件,建立风光水电互补系统的三目标优化运行模型。以湖北省某地区为例,对模型进行了算例仿真。通过案例分析,验证了本文所提出的优化运行策略有效性,为高比例水电电网大规模消纳新能源提供了新思路。     

基于双转子发电机的风光互补发电系统优化策略研究

本文为了研究提高风光互补发电系统的效率,引入了双转子发电机结构,有效提高了发电效率和电力输出的稳定性。以期为国内风光混合发电系统优化问题的合理解决提供参考。     

风光合用供电系统及应用探析

基于先进、高效的风力发电技术和太阳能光伏转换技术,设计、生产并投入实际运行的＂风光合用供电系统＂,可以为各类重要设备提供连续、可靠的电力供应,并且作为节能减排的绿色能源,具有广泛的使用和推广意义。     

新能源不间断供电系统的优化设计与应用研究

针对无电地区设备不间断供电难的问题,提出采用新能源离网型不间断供电的思路;对风光互补供电系统的设计方法、容量配置的计算方法和设备的选型等做了详细讨论和优化设计,并结合军用风光油互补系统实验样机的实际应用,论证了系统优化设计的合理性和可行性。     

Experience with PV‐diesel hybrid village power systems in Southern Morocco

In October 2002, under the auspices of Spanish Cooperation, a pilot electrification project put into operation two centralised PV‐diesel hybrid systems in two different Moroccan villages. These systems currently provide a full‐time energy service and supply electricity to more than a hundred of families, six community buildings, street lighting and one running water system. The appearance of the electricity service is very similar to an urban one: one phase AC supply (230 V/50 Hz) distributed up to each dwelling using a low‐voltage mini‐grid, which has been designed to be fully compatible with a future arrival of the utility grid. The management of this electricity service is based on a ‘fee‐for‐service’ scheme agreed between a local NGO, partner of the project, and electricity associations created in each village, which are in charge of, among other tasks, recording the daily energy production of systems and the monthly energy consumption of each house. This register of data allows a systematic evaluation of both the system performance and the energy consumption of users. Now, after 4 years of operation, this paper presents the experience of this pilot electrification project and draws lessons that can be useful for designing, managing and sizing this type of small village PV‐hybrid system. Copyright © 2007 John Wiley & Sons, Ltd.     

风光互补发电在通信基站节能中的应用

节能减排、清洁能源是实现可持续发展的战略性举措。文中从通信行业现行供电系统的实际及新能源应用的趋势出发,介绍了风光互补供电系统的设计、部件结构和在通信基站中的应用,系统阐述了采用新能源对通信电源发展的重大意义,有助于新能源的推广应用和实现国家节能减排目标。     

Greenhouse gas emissions associated with photovoltaic electricity from crystalline silicon modules under various energy supply options

The direct and indirect emissions associated with photovoltaic (PV) electricity generation are evaluated, focussing on greenhouse gas (GHG) emissions related to crystalline silicon (c‐Si) solar module production. Electricity supply technologies used in the entire PV production chain are found to be most influential. Emissions associated with only the electricity‐input in the production of PV vary as much as 0–200 g CO₂‐eq per kWh electricity generated by PV. This wide range results because of specific supply technologies one may assume to provide the electricity‐input in PV production, i.e., whether coal‐, gas‐, wind‐, or PV‐power facilities in the “background” provide the electricity supply for powering the entire PV production chain. The heat input in the entire PV production chain, for which mainly the combustion of natural gas is assumed, adds another ∼16 CO₂‐eq/kWh. The GHG emissions directly attributed to c‐Si PV technology alone constitute only ∼1–2 g CO₂‐eq/kWh. The difference in scale indicates the relevance of reporting “indirect” emissions due to energy input in PV production separately from “direct” emissions particular to PV technology. In this article, we also demonstrate the utilization of “direct” and “indirect” shares of emissions for the calculation of GHG emissions in simplified world electricity‐ and PV‐market development scenarios. Results underscore very large GHG mitigation realized by solar PV toward increasingly significant PV market shares. Copyright © 2011 John Wiley & Sons, Ltd.     

光风能混合双动力智能小车设计说明

本文着重分析探讨研究微型风力-太阳能光伏互补发电系统.风能和太阳能具有天然互补性,因此风能与光伏混合双动力,给智能小车供电,可靠性高,同时合理的配置储能装置的容量,效率高.我们希望通过深入研究,为实现新能源综合利用提供一种研究思路与设计方法,以期能为以后的实际工作起到一定的借鉴作用.     

风电规模化发展,离不开风电功率预测

随着风力发电装机容量的不断提升,风电占所在电网的比例也在逐步增加。由于风的高度随机波动性和间歇性,使得大容量的风电接入电网会对电力供需平衡、电力系统的安全、以及电能质量带来严峻挑战。风电功率预测系统使风电场可以向电网公司提供准确的发电功率预测曲线,这使得电网调度可以有效利用风电资源,提高风电发电上网小时数额。对我国大型风电场进行功率预测,所得结果作为调度部门的有力借鉴,对促进风电的规模化发展大有裨益。     

Optimal sizing of photovoltaic‐hydro power plant

The work presents a technological concept of energetically independent and ecologically sustainable system of electric energy production by joint operation of photovoltaic (PV) and hydro electric (HE) power plant as a unique technological system of solar hydroelectric (SHE) power plant. The sustainability of such system is based exclusively on the solar energy input, as the renewable and pure energy resource, and the use of hydro energy, due to the possibility of its continuous production of energy and its well‐known flexibility in covering the consumers' needs. For the purpose of connecting all relevant values into one integral SHE system, a mathematical model was developed for selecting the optimal size of the PV power plant as the key element for estimating the technological feasibility of the overall solution. The model was tested on electric energy supply from the island of Vis in Croatia. The obtained power of the PV power plant was 41 MW_p which corresponds to collector field of approximately 25 ha, while the estimated related storage was 20 hm³. The results show that the subject model describes the SHE very well and that the proposed concept of joint operation of PV and HE power plants is real and possible. The application of such sustainable SHE systems could significantly increase PV industry worldwide, i.e. the share of solar energy in energy balances of numerous countries. Proposed hybrid simulation‐dynamic programming model is suitable to optimize PV plant in accordance with system characteristics. Copyright © 2009 John Wiley & Sons, Ltd.     

光伏并网逆变器控制策略研究

随着光伏技术的日益发展,对太阳能的利用逐渐从无电地区发展到有电地区,许多国家都推出了光伏发电计划。在光伏并网发电系统中,逆变器实现把太阳能电池板产生直流电能转化为和电网同频同相的交流电能并且馈入电网,光伏并网逆变器是光伏并网发电系统的枢纽单元。     

铁路5G-R基站太阳能供电架构及应用

针对铁路5G专用移动通信(5G-R)系统基站布置密集、单体功耗高的特点,结合铁路无线通信的需求,研究采用太阳能(PV)为5G-R系统基站的射频拉远单元(RRU)设备供电的方案。对比分析5G-R系统RRU设备日用电规律及太阳能电池日发电规律,确定了采用太阳能结合储能与外电源的供电体系,通过比较几种太阳能电池与外电源组合供电架构的经济性与可靠性,推荐采用直流侧切换的供电架构,并进一步提出了采用直流侧智能配电的太阳能供电方案。本研究在保证5G-R系统运行安全可靠的同时,通过采用太阳能供电方式降低了铁路5G-R系统对外电源的需求。