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电网动态监控系统设计和建设要点 总被引:2,自引:2,他引:2
从认真规划、做好需求分析、协调各方关系、把握技术开发重点等方面提出了设计和建设电网动态监控系统中需要关注的问题,同时,概述了华东电网动态监控系统设计和建设的总体规划思路及主要功能,对大区电网和省电网建设动态监控系统有一定的参考价值。 相似文献
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从认真规划、做好需求分析、协调各方关系、把握技术开发重点等方面提出了设计和建设电网动态监控系统中需要关注的问题,同时,概述了华东电网动态监控系统设计和建设的总体规划思路及主要功能,对大区电网和省电网建设动态监控系统有一定的参考价值。 相似文献
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根据仿真计算结果,东北华北联网后东北电网的动态特性恶化,各输电断面稳定极限下降,其计算结果的准确度、计算模型的有效程度均有赖于实测数据的验证。基于这一现实问题,有必要在东北电网配量具备实时监测功能的动态监控系统。叙述了分层式电网动态监控系统的构成、各部分装置的功能,并提出了逐步实施该系统的方案,以及实施电网动态监控系统时需要进一步研究解决的问题。 相似文献
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电网可视化是处理海量电力大数据、提高电网态势感知的重要技术之一。文中回顾了国内外电网可视化发展历程,以ECharts技术为核心,结合实际电网开发了一套电网Web可视化展示模块。主要有:基于SVG地理接线图和点线标记技术的电网动态潮流展示;基于指针表盘技术的电网运行状态实时监控;在动态拓扑技术基础上开发了基于电压信息的电网动态拓扑展示;基于力导向算法的电网弹性拓扑。该套可视化系统基于Web浏览器,兼容性好、维护成本低、易于开发,直观形象的展示了电网运行状态,为调度运行人员的决策和研究人员的工作提供了便利,工程应用广泛。 相似文献
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基于超导储能的小扰动动态安全在线评估 总被引:3,自引:3,他引:0
利用超导储能(SMES)技术进行电力系统小扰动动态安全在线监测和评估是该技术在电力系统中的一种新应用.基于改进的Levy曲线拟合方法,文中建立了3阶7变量的局部传递函数拟合模型,通过对系统频域响应曲线峰值的拟合,获得了峰值对应模式的阻尼和频率特性,形成了小扰动安全的在线评估算法.通过EPRI-36节点系统的模式特征值与响应曲线峰值拟合结果的对比分析,说明了该算法的有效性和适用性. 相似文献
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安徽电网实时动态监测系统平台功能设计 总被引:1,自引:0,他引:1
电网实时动态监测系统对电力系统安全稳定运行及监测起着重要作用。介绍了安徽电网实时动态监测系统主站的配置和平台方案,论述了以PI数据库+Oracle数据库为电网实时动态监测系统主站平台,以PI数据库存储电网动态数据,以Oracle数据库存储电网模型和结构的优越性:分析了电网扰动与电网正常运行操作表现出的不同物理特性,找出了合理的判据,实现了电网扰动情况下的实时正确报警;阐述了状态估计和低频振荡实现的方法。 相似文献
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大电网动态安全风险智能评估系统 总被引:4,自引:4,他引:0
针对大规模交直流混联系统的快速动态安全风险防控需求,研究了系统动态安全风险智能评估系统的架构与关键技术。结合电力系统安全风险评估的一般流程,提出了基于机器学习的安全风险智能评估系统的总体框架和动态安全风险统一评估模型结构;构建了包含发电负荷运行方式、网络拓扑结构和故障位置特征的训练样本集合,采用样本平衡技术提高评估模型精度;基于深度学习提取动态安全风险高级特征,采用主流机器学习框架构建和更新动态安全风险统一评估模型。以省级电网为例验证了所提动态安全风险智能评估系统的可行性。 相似文献
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Hiroyuki Kita Ken-Ichi Nishiya Jun Hasegawa Takahiro Mizuno 《Electrical Engineering in Japan》1992,112(8):44-54
To maintain power system security, the authors are developing an integrated security monitoring and control (ISMAC) system which consists of the three main functions: security monitoring, preventive control and emergency control. This paper focuses on the dynamic preventive control which deals with the transient stability immediately after the contingency has occurred. The proposed method is based on the transient stability assessment using the pattern recognition with two-dimensional feature space. Therefore, a preventive control strategy can be obtained rapidly. An index which represents the severity of the contingency quantitatively (security index) is defined by the distance from a linear decision surface which divides a feature plane into a stable and an unstable region. Further, this method has also the advantage that it is possible to consider the effect of the control devices or damping to some extent and specify the operator demand for stabilization flexibly. The effectiveness of the proposed method is ascertained through numerical examples for model power systems. 相似文献
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For the purpose of maintaining the power system security, an integrated security monitoring and control (ISMAC) system, is being developed in which both preventive and emergency control have important roles. Static security control strategies which deal with the steady state after the contingency is cleared, have been studied by various researchers including the authors. However, the basic research on dynamic security control which deals with the transient state immediately after the contingency has occurred is seldom found. This paper presents a method of dynamic preventive control for the transient stability considering plural contingencies and coordinating in a flexible way the requirements of both security and economy. In the preventive control for transient stability, it is necessary to judge the transient behaviors properly and also to evaluate the security quantitatively for a postulated contingency. The authors define a security index which represents absorbing capacity of post-fault kinetic energy based on the energy function method. The index has these advantages: it is possible to calculate values rapidly; and physical meanings are easily understood. The effectiveness of the proposed method is ascertained through numerical examples for model power systems. 相似文献
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In this paper, a new approach for power system online dynamic security assessment, as well as a tool for calculating the proposed fuzzy dynamic security index is presented. This proposal is based on a three-stage fuzzy inference system, which composes the fuzzy dynamic security index making use of seven performance indexes herein defined. The calculation of the performance indexes is based on the results obtained through dynamic simulations of the system behaviour after each one of the credible contingencies in a given operation state. With the aim of reducing the calculation time a novel distributed processing of the dynamic simulations is also developed. High voltage systems are used to illustrate the ideas presented in the paper. 相似文献
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针对电力系统安全性问题特性,提出一种基于动态安全域的安全概率评估模型。模型核心是不安全概率指标,并通过该指标来表征各电力元件以及整个电力系统的安全性状况。概率方法的引入,使得模型不仅计及系统中各种主要的不确定性因素,而且对系统的安全状况进行了定量的描述。动态安全域理论大大降低了安全概率评估的计算量,使得该模型具有实用性。评估结果可以用于指导运行人员在安全控制中制定正确的决策。用新英格兰10机39节点系统(New England 10-generator 39-bussystem)对该模型做了验证。 相似文献
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