摘要
电网拓扑只在二维平面反映地理位置节点的连接情况,无法动态显现状态量之间的关系。将电网映射成三维空间展开布置的纵向受力的弹性网络,既保持了电网原有的拓扑连接状态,又显现了功角之间的物理特性。将广域测量系统(wide area measurement system,WAMS)实测状态量放入该映射模型,通过弹性网络形变直观地显现电网功角状态变化,摆脱对元件参数精确性的依赖,提高对电网状态变化的预判能力。算例和分析都证明了该映射的合理性。映射的弹性网络适用于功角特性突出的电网状态分析,如静态功角稳定分析、功角可靠性分析和低频振荡机制分析等。该研究对实现电网可视化智能分析与控制具有实际意义。
Two-dimensional power grid topology can only reflect the connection of the location nodes,while can not show the dynamic relationships among the state variables.The power grid was mapped to elasticity network with plane layout in three-dimensional space,which is born of the vertical force.The network maintains the original topology and shows the power-angle physical characteristics.The state variables measured by wide area measurement system（WAMS） were put into the mapping model.The model shows the power angle changes by intuitive deformation in elasticity network and dose not depend on model parameters accuracy.The model improves the ability in predicting grid state changes.Example and analysis result shows that the map is reasonable.The elasticity network fits in grid state analysis when power-angle feature is prominent,such as the static angle stability analysis,reliability analysis and low-frequency oscillation mechanism analysis.The research has benefits for grid visualization intelligent analysis and control.
出处
《中国电机工程学报》
EI
CSCD
北大核心
2011年第31期109-117,共9页
Proceedings of the CSEE
基金
国家自然科学基金项目(61040049)
湖南省自然科学基金项目(11JJ6032)
湖南省科技计划项目(2010FJ4095)~~
关键词
智能电网
弹性网络
弹性系数
拓扑映射
功角特性
smart grids
elasticity network
elastic coefficient
topology mapping
power angle characteristic
