摘要
我国已初步建成以特高压为骨干网架的交直流混联电网,电网的运行方式更加复杂和多样,这对调控运行的分析和展示提出了更高要求。文中从电力系统电气距离的角度出发,利用基于t分布的随机近邻嵌入(t-distribution stochastic neighbor embedding,t-SNE)把设备之间高维、复杂的电气距离关系,映射到二维或三维空间,并结合可视化方法来展示设备间的紧密程度,给运行和分析人员以更直观的印象。采用实际电网数据验证了方法的有效性,本方法可以快速响应网架的变化,满足在线分析和展示的要求。
The AC/DC hybrid power grid has already been built in China,which uses Ultra-High Voltage(UHV)grid as its backbone.Operation modes of power grid become more complex and diverse.The requirement for online analysis and visualization of dispatching operation will be much higher.From the view of electrical distance,this paper proposes a new method to represent the closeness degree of power equipment,which maps the high-dimensional and complicated relations of electrical distances into 2D images by using t-SNE(t-distribution stochastic neighbor embedding)algorithm,and gives dispatcher more intuitive impressions.The validation is verified by taking the actual data of power grid as an example,indicating the method can represent the variety of grid rapidly and meet online application.
作者
史东宇
胡文强
李刚
严剑峰
臧德春
SHI Dongyu;HU Wenqiang;LI Gang;YAN Jianfeng;ZANG Dechun(China Electric Power Research Institute,Beijing 100192,China;Southeast University School of Electrical Engineering,Nanjing 211189,China)
出处
《电力工程技术》
2018年第2期78-82,共5页
Electric Power Engineering Technology
基金
国家电网有限公司科技项目(XT71-15-047)
江苏省自然科学青年基金项目(BK20160678)
关键词
电力系统
电气距离
可视化
t-SNE
power system
electrical distance
visualization method
t-distribution stochastic neighbor embedding
