共查询到19条相似文献,搜索用时 171 毫秒
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随着智能电网建设的全面展开,智能化变电站通信网络的优化合理选择成为重要问题。结合智能变电站通信网络的不同需求,通过对站控层、过程层以及对时网络的各种实现方法的对比分析,得出智能变电站站内通信网络选择的最优化方案。研究结果表明:在当前技术条件下,充分考虑网络可靠性及经济性,合理实现不同结构和规模的智能变电站通信网络的建设,对智能电网稳定运行具有重要意义。 相似文献
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智能变电站一体化信息平台的设计 总被引:9,自引:1,他引:8
作为智能电网的关键节点,智能变电站的功能之一是为电网提供数据信息支撑。为此建立了一种智能变电站内的一体化信息平台,该平台采用分层分布式结构,统一和简化变电站的数据源,形成唯一性、一致性的基础数据和信息,以统一标准的方式实现变电站内外实时数据及信息的交互和共享,为电力系统运行控制提供可靠的信息支撑。阐述了建立平台所涉及的站内数据辨识、数据估计、数据及信息的分类、动态共享、智能传输以及站内数据及信息的安全等关键技术,提出了具体的解决方案。平台遵循IEC61850规范与站内外的设备联系。对所建立平台的信息流量和延迟进行了仿真,结果表明,平台的通信延迟可以满足站内外数据及信息使用者的要求。 相似文献
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接地保护是电力系统继电保护的重要组成部分,传统的接地保护装置存在可用故障信息有限、响应速度慢、算法复杂、可靠性低等问题,严重影响供电质量和运行效率的提高。智能变电站为解决单相接地保护提供了新的思路,以多智能变电站为基础,构筑区域集控式智能供电体系,通过GOOSE网络实现信息共享,构造故障识别与隔离系统,对站内信息集中处理、综合判断,采用基于分布式终端之间对等交换数据的智能控制技术,提出零序全电流功率方向原理,重点研究基于多判据的单相接地保护判据的构造以及GOOSE网络传输关键技术,保证了单相接地保护的选择性与可靠性,有效解决了传统保护方式存在的各种问题,为智能变电站多判据继电保护的实现提供了理论分析基础。 相似文献
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智能电网支撑智慧城市关键技术 总被引:1,自引:0,他引:1
智能电网对智慧城市建设具有强大的支撑潜力。阐述了智慧城市的内涵与特征,及其对智能电网的关键需求。通过梳理二者的关系认为智能电网是智慧城市的重要组成部分,以智能电网为基础构建智慧城市是智慧城市发展的重要途径。在智能电网建设中,需要深化应用信息通信类技术、分布式能源发电并网技术、绿色输变电工程技术、先进储能技术、主动配电网和微网技术、需求响应技术、电动汽车与电网互动技术、智能用电及用户用能行为分析技术、智能电网业务互动技术城市能源互联网等关键技术,使智能电网为智慧城市的发展提供强大的支撑。 相似文献
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准确快速检测智能变电站通信网络异常流量是发现系统异常、实现安全态势感知和主动防御的关键技术,对保证智能电网安全稳定运行有着重要意义。文中提出了基于时-频域混合特征的智能变电站通信网络异常流量检测新方法。首先,设计了基于分形自回归积分滑动平均(FARIMA)流量模型和小波包分析方法的流量频域特征提取方法,并结合电力信息流时域特征构建时-频域混合特征集。进而,采用人工蜂群优化的支持向量机算法进行异常流量辨识。最后,基于某110 kV变电站的站内实际网络流量和CIC DDoS2019数据集、KDD99数据集进行仿真,结果表明所提算法对网络异常流量识别有更低的误判率和漏检率。 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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通信信息平台是智能电网的重要支持系统,配、用电通信网一直以来缺乏适用的通信解决方案,成为制约智能电网在配、用电侧应用的瓶颈。分析了智能配、用电通信网的特点及业务发展需求,对无源光网络(passive optical network, PON)、全球微波接入互操作(world interoperability for microwave access,WiMAX)和电力线载波(power line carrier, PLC)等适用通信技术进行了分析,并对其在配、用电通信网中的应用进行了经济技术比较,最后提出了智能配、用电通信网的系统架构和组网技术方案。 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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智能电网已成为当今电网的发展趋势。作为支撑智能电网的重要组成部分,信息系统与配电一次网架系统相互耦合、密不可分,对电网规划和运行的影响日益突出,传统的配电网规划方法较少考虑信息系统与配电一次网架系统间的相互影响,已无法适应智能电网发展背景下的精细化规划的需求。该文探讨了配电网架规划、配电通信网规划、配电自动化规划三者之间的协调关系和协调指标,初步提出了三者协同规划的思路框架并具体探讨了各规划子问题的规划模型、指标和方法。研究结论可为未来主动配电网的一次电网架构、二次自动化系统与智能决策支持系统的三位一体协同规划提供思路。 相似文献