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在总结我国可再生能源发展形势的基础上,论述了风电、太阳能发电等间歇性可再生电源的并网消纳对电网安全运行和电能传输质量所产生的影响.可再生能源发展的关键在于并网消纳,涉及发电、输电、配电、运行、调度等电力生产的多个环节,从并网方式、控制技术、输电技术、调度技术等角度分别总结了相关技术发展现状及应用情况.并网友好、控制智能、输电可靠、多能互补是未来可再生能源发电并网关键技术的主要发展方向. 相似文献
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直流电网在中国的应用前景分析 总被引:38,自引:0,他引:38
随着化石能源的日益枯竭,中国已将发展可再生能源提升至重要地位,并逐步实现能源结构的战略性调整。分析可再生能源发电的间歇性与不稳定性特点,以及可再生能源发电集中并网带来的稳定性问题,提出通过建设广域覆盖的直流电网以有效解决可再生能源集中并网的有功波动问题。建设全国性的直流骨干输电网,不仅可更有效地利用可再生能源,也将积极推动坚强智能电网的建设。与交流系统相比,直流电网在未来城市配电、微网等领域也有较大的优势。根据中国国情,对直流电网在中国建设的可行性进行了具体分析,并提出中国直流电网主干结构设想图,指出了直流电网建设的一些关键技术问题,为中国直流电网建设提供参考。 相似文献
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随着我国可再生能源发电产业规模的不断扩大,可再生能源发电并网问题提上了国家立法议程。本文在充分调查分析我国可再生能源发电并网的现状和立法诉求的基础上,提出我国可再生能源发电并网具体的法律思考,为我国可再生能源发电并网立法提供有益帮助。 相似文献
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可再生能源在欧盟未来的能源框架中扮演着重要角色。到2020年,在欧盟总的能源消耗量中,预期20%将来自可再生能源,并且能效将提高20%。智能电网将是未来电力系统接纳大规模可再生能源发电并网的基石。文中介绍了欧洲的可再生能源开发现状和规划以及能源政策,并讨论了欧盟在智能电网相关技术方面的研发进展。丹麦是欧盟国家中可再生能源使用和相关关键技术研发的领跑者,文中重点以其为例进行介绍和阐述。 相似文献
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可再生能源发电的开发利用日益受到重视,其规模的扩大也给电网调度运行带来了新的课题和挑战。在分析可再生能源发电运行特点的基础上,归纳了其对电网运行的影响,并提出了可再生能源并网运行的相关对策。 相似文献
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Abstract The environmental concerns due to conventional power plants have given impetus for widespread utilization of renewable energy based distributed generation technologies. As a consequence, the concepts pertaining to a smart grid with advanced functional architecture are evolving to incorporate these technologies. Many such smart grid strategies are focused on maximum utilization of renewable energy sources compared to conventional fossil or nuclear fuels for meeting real-time load demand. The diverse characteristics of renewable energy based distributed generation technologies compared to conventional power plants have led to many operational stability concerns for the smart grid. This article discusses these stability concerns in smart grid with distributed generation technologies. 相似文献
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认为智能电网实际上是伴随第三次工业革命而出现的新生事物。通过分析智能电网与第三次工业革命的关系,揭示出智能电网内涵的本质要求是电网的绿色化及能源的高效利用;其主要特征表现在电网与用户双向互动、分布式电源与集中式电源并重、电能实现普遍储存、电网管理向经营服务型转变等方面。指出智能电网建设不等同于电网的智能化建设。智能电网建设的主要内容是可再生电源的建设和接入电网,小型和微型绿色电网的建设,智能用电及需求响应系统、储能及电动车充电系统、以及相应的调度自动控制和信息交互系统的建设等。未来的电网将形成由主干电网与众多小型电网相结合的新形态。 相似文献
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考虑新能源发电与储能装置接入的智能电网转供能力分析 总被引:3,自引:0,他引:3
可再生能源发电和新型储能系统接入电网后使得N 1重构路径的选择更为复杂,为解决此背景下智能电网转供能力的计算问题,在对二者时变运行特性分析的基础上,提出基于智能电网转供能力指标体系的N 1恢复模型,通过对转供能力指标计算公式线性化处理,并结合基于拓扑模型简化的人工智能(artificial intelligence,AI)优化算法,利用优化调整电网、可再生能源发电、新型储能系统的运行方式,实现电网N 1后转供能力最大。最后,以某实际典型电网为例,分析可再生能源发电和新型储能系统接入电网对提升系统应对N 1故障能力和实现负荷有效转移的作用,验证了转供能力指标对于定量描述智能电网自愈特性的有效性。 相似文献
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Facing the growth of energy demand and the worldwide interests in renewable energy sources, smart grid has been proposed in order to accommodate the needs of power grid development. In China, digital substations have been widely applied. Moreover, as the worldwide interest and development in smart grid have increased significantly, the digital information availability and communication capability of modern substation have been improved. Different with traditional substation protection configuration based on local information, Integrated Protection (IP) is used to denote the integration of several protective devices for multiple power equipment within the substation into one protective relay, obtaining all the real time information of the substation by communication network. The analysis of sharing information and cooperation among different protection functions helps to realize more reliable and sensitive fault detection. This paper describes several different integrated protection schemes and their respective advantages and disadvantages. The principles and functions applied in integrated protection systems are addressed to provide an overview of the current state of the technology. A new coordinated protection system based on inter-substation information is proposed and simulation study is discussed to verify the improved reliability and sensitivity. 相似文献
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Facing the growth of energy demand and the worldwide interests in renewable energy sources, smart grid has
been proposed in order to accommodate the needs of power grid development. In China, digital substations have
been widely applied. Moreover, as the worldwide interest and development in smart grid have increased
significantly, the digital information availability and communication capability of modern substation have been
improved. Different with traditional substation protection configuration based on local information, Integrated
Protection (IP) is used to denote the integration of several protective devices for multiple power equipment within
the substation into one protective relay, obtaining all the real time information of the substation by communication
network. The analysis of sharing information and cooperation among different protection functions helps to realize
more reliable and sensitive fault detection. This paper describes several different integrated protection schemes and
their respective advantages and disadvantages. The principles and functions applied in integrated protection
systems are addressed to provide an overview of the current state of the technology. A new coordinated
protection system based on inter-substation information is proposed and simulation study is discussed to verify the
improved reliability and sensitivity. 相似文献
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基于大规模储能系统的智能电网兼容性研究 总被引:10,自引:3,他引:7
有效协调小容量分布式发电(distributed generation,DG)和集中式可再生能源发电(collected renewable generation,CRG)是中国未来智能电网发展的重要特征。分散储能系统(distributed energy storage system,DESS)和集中储能系统(mass energy storage system,MESS)将在大容量CRG和小容量DG的安全、稳定接入大电网中发挥重大作用。文中在对智能电网兼容性问题进行深入分析的基础上,探讨了考虑电网供蓄特性的协同调度,提出了涵盖输配电网CRG-MESS供蓄配置以及微网DG-DESS供蓄配置的智能电网兼容性解决方案。 相似文献
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微电网是利用可再生能源的主要方式之一,是典型的"源-网-荷"一体化系统,与智能电网、需求侧管理、分布式电源等技术联系紧密,目前已经成为能源研究的重要领域。本文通过考虑微网内源侧的不同类型分布式能源运行特点、负荷侧的不同类型需求侧响应方式以及网侧的电压约束等,建立了微网源-网-荷互动优化运行数学模型,通过滚动优化算法进行仿真分析。算例分析表明,利用本文提出需求侧响应下的管理系统模型,不仅提高了电网用电的经济性和环境友好性,而且降低了微网的负荷峰值和负荷冲击,提高了用电效率。 相似文献