共查询到18条相似文献,搜索用时 979 毫秒
1.
新型可再生能源的应用正日益广泛地用作传统大型中心电站的补充和替代。本文阐述了电力电子技术在风能、太阳能发电中的应用、现状及未来的发展趋势,同时阐述了电力电子技术在风光互补发电系统中的应用,以及风光互补可再生能源的发展前景。 相似文献
2.
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。 相似文献
3.
4.
5.
6.
风光互补供电技术在3G基站的应用 总被引:1,自引:0,他引:1
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。 相似文献
7.
8.
9.
实践证明,风能、太阳能混合供电系统在性能和成本上是最合理的独立的电源系统,其具有许多独特的优势,主要包括以下几个方面:不需要提供燃料,所占用的空间合理,不会产生污染,运行的成本低,互补系统能够提供稳定的能源。但风光互补发电系统也存在着一定的问题,风能、太阳能资源不稳定,转换的效率较低;太阳能电池板和风力发电机的价格昂贵;技术还不够成熟,有待于进一步的完善;综合管理能力也有待于进一步提升。随着资源的不断耗竭,风光互补发电作为一种新型的能源提供方式,必将在新能源领域中占有很重要的地位。因此,对风能、太阳能混合发电系统的研究是非常必要的。 相似文献
10.
由于太阳能和风能在时间上和地域上的互补性,本文构建了一种风光互补发电系统并介绍了其中的硬件结构、工作原理以及充放电控制的设计方法,并对其中的关键技术:如最大功率点的选取、逆变器的设计以及三段式充电的流程等详加阐述。 相似文献
11.
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。 相似文献
12.
13.
14.
风电和光伏发电具有间歇性和随机性,为了降低在多源联合发电系统中的弃风弃光率,采用含氢储能系统和火电机组配合来平滑风电和光电机组出力。文中以系统运行成本最小和弃电惩罚成本最小为目标,以系统功率平衡、火电机组出力和爬坡、热备用、风电和光电出力及储能系统储氢罐容量、电解槽和燃料电池功率等为约束条件构建了多源联合发电系统日前调度模型。通过YALMIP工具箱对模型进行编程,并调用CPLEX对编写的程序进行求解。对含有风电、光电、火电机组以及储能系统的多源联合发电系统进行算例分析,通过对比有无储能系统的弃风弃光量和系统总运行成本,证明了含氢储能系统可以有效降低系统的弃风弃光率,并提高系统的经济性。 相似文献
15.
The global electrical energy consumption is rising and there is a steady increase of the demand on the power capacity, efficient production, distribution and utilization of energy. The traditional power systems are changing globally, a large number of dispersed generation (DG) units, including both renewable and nonrenewable energy sources such as wind turbines, photovoltaic (PV) generators, fuel cells, small hydro, wave generators, and gas/steam powered combined heat and power stations, are being integrated into power systems at the distribution level. Power electronics, the technology of efficiently processing electric power, play an essential part in the integration of the dispersed generation units for good efficiency and high performance of the power systems. This paper reviews the applications of power electronics in the integration of DG units, in particular, wind power, fuel cells and PV generators. 相似文献
16.
针对目前单一式离网型新能源发电系统的发电不稳定性及能源溢出浪费等问题,提出了一种风电与光电相结合的互补式并网发电系统的设计理念。利用风能与太阳能二者较强的互补性,解决传统单一式发电系统昼夜间歇性供电问题。同时,该发电系统采用并网式结构,可以将溢出的多余能源回馈给电网系统,实现系统发电量的有效利用,保证供电系统的长期稳定性供电。最后采用著名的电力系统计算机辅助设计软件PSCAD对该风光互补并网发电系统进行仿真验证,结果表明该方案可有效实现发电系统的稳定性,完成10kV中压城市配电网络的并网,对改善区域经济发展有着重大意义。 相似文献
17.
《IEE Review》2002,48(1):9-13
The belief that wind energy can make only a marginal contribution to the UK's energy needs is based on fundamental misconceptions. The DTI suggests that up to half of the 2010 target for renewable electricity (10%) could be met by wind energy. The British Wind Energy Association argues that this is quite feasible and has carried out a detailed analysis, suggesting possible regional distributions. The industry struggles, however, to overcome misconceptions. 'What happens when the wind stops blowing?' is a frequent question, and even power engineers suggest-quite erroneously-that thermal plant must be held in readiness to pick up any reductions in output. It is also argued that electricity distribution systems, designed to cope with power flows from central power stations, cannot easily cope with power from wind farms flowing in the opposite direction. Although this may be true in some locations, wind is no different from any other form of generation-welcome in some locations, but more difficult to assimilate in others. Experience in Denmark suggests such problems can be overcome, with wind now accounting for more than a third of the generation capacity in Jutland. This paper discusses the issues and involved in overcoming the misconceptions. No matter how strong the engineering argument for wind energy, as with any other energy option, wind power will only be deployed on a significant scale if it can generate electricity at a cost comparable to alternative forms of generation technology. The latest figures suggest that wind is more than equal to this challenge 相似文献