共查询到20条相似文献,搜索用时 224 毫秒
1.
我国大规模风电接入电网面临的挑战 总被引:5,自引:1,他引:4
我国风电大规模接入电网,电网规划和运行面临着诸多挑战。风能资源的开发利用,需要进行详细的风能资源调查,电网规划、电网调度与运行应考虑风电开发因素。提出了电网对风电大规模接入应在协调电网规划、风电与其他电源协调发展等方面采取的相应措施。 相似文献
2.
3.
大规模风电接入对福建电网调峰的影响 总被引:3,自引:0,他引:3
福建省风资源丰富,可供风电开发的场址较多,风电在福建电网中所占比重不断提高。大规模的风电并入电网后,风电出力的随机性和间歇性对电力系统调峰的影响将日益增大。目前对该影响的研究多集中在内陆风电,沿海风电研究相对较少。介绍了风电出力对系统负荷峰谷差的影响机理。结合福建电网的实际负荷数据,分析福建电网的月负荷特性和日负荷特性。在此基础上,结合福建已投沿海风电近三年的实际出力数据,利用数理统计和概率分析的方法,对大规模风电接入对福建电网负荷峰谷差的影响大小及影响的概率分布规律进行研究。分析结果对福建电网风电规划、电网调度等具有意义。 相似文献
4.
由于经济快速发展,对能源的需求日益增大,其中电力缺口尤其明显,此外严峻的环境污染形势,迫切需要改变能源格局,改善生态环境,对新能源与可再生能源进行大规模的开发应用。江苏位于中国风能资源较丰富区域,沿海尤其是近海海域风能资源更为丰富,为大规模、超大规模海上风电发展创造了巨大空间。大规模非并网风电的应用,更是开辟了一条中国特色风电多元化发展之路。文中分析了江苏沿海风能资源布局及沿海风电开发现状;在风电非并网理论指导下,以规模化制氢和氯碱产业为例,探讨非并网风电与高载能产业间的链合路径,并构建相应产业链;依据产业链合机制,探讨大规模非并网风电产业基地建设的实施目标与战略规划。 相似文献
5.
樊建兵 《能源技术(上海)》2009,30(1):24-26
根据上海风能发电的发展沿革及多元化供电模式的特点与应用,在发展大规模风力发电场的同时开发各种小型分布式风能发电互联系统,对上海能源结构的优化和可持续发展具有深远的战略意义;户用多元化风能发电互联模式是一种创新的可再生能源发电形式,特别适合在风能资源较丰富的城市周边和用电需求量较大的地区,值得推广应用。 相似文献
6.
根据对地理和气象资料的分析,我国的低风速风能资源更丰富且分布区域广大,约占全国总面积的68%。据广东省的初步测算,达到可开发标准的低风速风电场资源储量约为4级以上风资源的3倍;在东部沿海、湖等地区的低风速风资源储量同样也很可观。由于临近用电负荷中心,电网、路网条件好,电价承受力强,开发利用这些区域的风能将是我国风电发展的重要方向。因此, 相似文献
7.
为方便我国风电设备制造商及发电企业参与智利风能资源开发,搜集气象观测和风电并网消纳相关资料,进行了智利风能评估与开发前景的分析。首先选取33个地面气象观测站点的典型年份,然后根据典型年气象数据评估了风能资源的地域分布;然后结合用电负荷、电网建设和已有电源情况,分析了各区域发展风力发电的并网与消纳条件,总结适合进行风电投资的目标区域。最后还分析了当地进行风电开发的扶持政策和制约因素,总结了我国能源企业赴智利开发风电的优势和适宜采用的方式。 相似文献
8.
我国海上风能资源丰富,且靠近电力负荷中心,随着国家扶持力度不断加大和我国海上风电技术的进一步发展,海上风电具有广阔的的发展前景。然而,技术不成熟、经验欠缺和投资收益率低等因素仍使现阶段大规模开发海上风电面临较大投资风险。 相似文献
9.
A compressed air energy storage system for wind power generation in western Inner Mongolia
下载免费PDF全文
![点击此处可从《储能科学与技术》网站下载免费的PDF全文](/ch/ext_images/free.gif)
内蒙古自治区陆上风能资源总储量达到了1380 GW,其中技术可开发量为380 GW,几乎占全国风电资源的一半.风力发电负荷已经占到内蒙古电网负荷的20%以上.针对这种情况,对大规模风电并入内蒙古电网进行了研究.在此研究基础之上,为了更有效的利用风电资源,设计了一台压缩空气储能电站.该压缩空气储能电站可以利用风电场夜晚的弃风电量进行储热,为白天的运行提供部分热源.最后,从热耗率,充电比与发电效率三方面对压缩空气储能电站进行了分析,研究结果表明,更高的储气压力和更大的储气容量能够得到更好的发电效率. 相似文献
10.
11.
The current development of wind power in China was presented in this paper. Many regions such as Xinjiang Uygur Autonomous
Region, Inner Mongolia Autonomous Region and southeast coastal region, etc. in China have abundant wind energy resource. At
the same time, the utilization of wind power in China has been developing quickly and its prospect is promising in spite of
many some obstacles. With the implementation of the Renewable Energy Law, some previous obstacles have been or are being eliminated.
Much investment and many enterprises start to enter this field. In spite of this, there still exist some financial and technological
obstacles. One of the technological obstacles is the stability of local power grid owing to the increasing proportion of the
wind power capacity. Because the centralized development mode of wind power was adopted, the quick fluctuation of wind speed
will influence the voltage and frequency stability of local power grid. In addition, large wind farm has little dispatching
ability because of the uncontrollability, randomness and fluctuation of natural incoming wind. To erase these obstacles, a
novel hybrid power system combining wind farm and small gas turbine power plants is discussed. 相似文献
12.
13.
Owing to the stochastic characteristic of natural wind speed, the output fluctuation of wind farm has a negative impact on power grid when a large-scale wind farm is connected to a power grid. It is very difficult to overcome this impact only by wind farm itself. A novel power system called wind-gas turbine hybrid energy system was discussed, and the framework design of this hybrid energy system was presented in detail in this paper. The hybrid energy system combines wind farm with several small gas turbine power plants to form an integrated power station to provide a relatively firm output power. The small gas turbine power plant has such special advantages as fast start-up, shutdown, and quick load regulation to fit the requirement of the hybrid energy system. Therefore, the hybrid energy system uses the output from the small gas turbine power plants to compensate for the output fluctuation from the wind farm for the firm output from the whole power system. To put this hybrid energy system into practice, the framework must be designed first. The capacity of the wind farm is chosen according to the capacity and units of small gas turbine power plants, load requirement from power grid, and local wind energy resource distribution. Finally, a framework design case of hybrid energy system was suggested according to typical wind energy resource in Xinjiang Autonomous Region in China. 相似文献
14.
新疆达坂城风电场风能资源特性分析 总被引:13,自引:0,他引:13
对新疆达坂城风电场的风能资源特性进行了详细的研究。基于在达坂城风电场实测的10m和24m高程的10min平均风速数据,分析了原始风速的分布特性。根据地表风速沿高度呈风剪指数分布的特性,计算了在各个轮毂高度上的风速分布。采用最小误差逼近算法原理,计算了风速韦布尔分布的参数以及平均风速和分布方差。通过对韦布尔分布的分析,计算了各个高度上风电场的平均风功率密度、有效平均风功率密度和可利用小时数等风能资源特性参数,为当地的风能开发提供分析基础。 相似文献
15.
16.
为研究风气互补发电系统对电网的影响,首先搭建了由风电机组、燃气轮机、电网线路、静止无功补偿器、电力系统稳定器和大型水力发电机组成的仿真系统,并对该系统的负载侧和电网线路中部节点进行了稳定性分析。仿真结果表明,电网在加载了风气互补系统后运行能保持稳定,并能在发生短时故障后恢复到原来状态。该文为进一步研究风气互补系统与电网的相互影响提供了良好的模型基础。 相似文献
17.
对风资源评估、选址地面情况和风机位置的排布等影响风电场微观选址的因素进行了分析.阐述了风电场发电量的预测方法,通过实例说明如何使用相关软件来预测风电场发电量,并根据预测结果对风电场微观选址注意事项进行了探讨. 相似文献
18.
风电与燃气轮机发电互补系统结构与容量配比的研究 总被引:1,自引:0,他引:1
对在我国新疆地区采用风力发电与燃气轮机发电组成的互补发电系统的结构和在一定风能资源条件下两种发电系统的容量配比进行了研究。论文首先针对实测的新疆达坂城风电场的风速数据,采用整体风电场功率输出模型,得到了风电场的输出与分布。根据实际的风电场输出负荷,设计了互补中燃气轮机的几种方案。针对燃气轮机的部分负荷运行特点,设计了不同方案的互补运行规则。最后根据不同运行规则,计算了互补系统的整体特性,得到了在一定条件下风电与燃气轮机发电较合适的容量配比。 相似文献
19.
中国西北清洁能源开发与输送若干问题分析 总被引:1,自引:2,他引:1
陈峰 《电网与水力发电进展》2009,25(1):3-6
分析了我国清洁能源发展形势和当前风电大规模开发面临的主要问题,指出必须依靠和建设坚强电网,才能实现风电等清洁能源大规模开发利用。提出了西北大规模开发输送风电的思路和举措,特别强调要加强750kV骨干网架及外送电通道建设,解决风电大量集中上网和输送问题;同时,借鉴我国水电梯级调度经验实施大区域流域化风电预测和调度,加强电网调峰能力建设,改善电网接纳风电的能力,提高风电开发经济效益和社会效益.促进清洁能源开发利用又好又快发展。 相似文献
20.
Owing to the stochastic characteristic of natural wind speed, the output fluctuation of wind farm has a negative impact on
power grid when a large-scale wind farm is connected to a power grid. It is very difficult to overcome this impact only by
wind farm itself. A novel power system called wind-gas turbine hybrid energy system was discussed, and the framework design
of this hybrid energy system was presented in detail in this paper. The hybrid energy system combines wind farm with several
small gas turbine power plants to form an integrated power station to provide a relatively firm output power. The small gas
turbine power plant has such special advantages as fast start-up, shutdown, and quick load regulation to fit the requirement
of the hybrid energy system. Therefore, the hybrid energy system uses the output from the small gas turbine power plants to
compensate for the output fluctuation from the wind farm for the firm output from the whole power system. To put this hybrid
energy system into practice, the framework must be designed first. The capacity of the wind farm is chosen according to the
capacity and units of small gas turbine power plants, load requirement from power grid, and local wind energy resource distribution.
Finally, a framework design case of hybrid energy system was suggested according to typical wind energy resource in Xinjiang
Autonomous Region in China. 相似文献