摘要
提出了配电网安全域(DSSR)全维观测的概念与方法。首先,在总结现有2维、3维投影观测不足的基础上提出全维观测的概念。其次,提出一种基于安全距离的全维观测方法。该方法包括以下内容:(1)定义DSSR的等效半径,即原点到所有有效安全边界的距离;(2)通过DSSR半径的折线图和雷达图进行全维可视化,以观察域的特征和凹陷;(3)定义凹陷指标和形状畸变指标量化描述域的凹陷程度和圆润程度;(4)分析凹陷对应的边界表达式,得出凹陷原因及改善方案。最后,进行算例验证并与投影法对比。上述方法能完整地观测高维域的形态,发现投影法难以发现的隐藏缺陷,为安全域信息的深度挖掘提供了新的工具。
The concept and method of full-dimensional（F-D）observation of distribution system security region（DSSR）are proposed.Firstly,on the basis of summarizing the shortcomings of the existing 2 Dand 3 Dprojective observation method,the concept of F-D observation is put forward.Secondly,the F-D observation method based on the security distance is proposed,which includes the following contents：（1）The equivalent radiuses of DSSR are defined as the distance from original point（zero loading point）to all of the effective security boundaries;（2）The DSSR radiuses are visualized by line and radar map to observe the characteristics and concavity of DSSR;（3）The concavity indices and the shape distortion index are defined to quantify the degree of concavity and distortion of DSSR;（4）The reasons of concavity and the solutions to solve the concavity problem are acquired by analyzing the concavity security boundaries expressions.Finally,the proposed F-D observation method is illustrated and compared with 2 D/3 Dprojective approach through the case studies.The result shows that the F-D method can achieve complete observation of high dimensional regions and detect the hidden defects which 2 D/3 D method is difficult to find.The new F-D method provides a powerful tool to explore the deeper information in DSSR.
作者
肖峻
张宝强
邵经鹏
张苗苗
甄国栋
XIAO Jun;ZHANG Baoqiang;SHAO Jingpeng;ZHANG Miaomiao;ZHEN Guodong(Key Laboratory of the Ministry of Education on Smart Power Grids （Tianjin University）, Tianjin 300072;Maintenance Company of State Grid Tianjin Electric Power Company, Tianjin 300031, China)
出处
《电力系统自动化》
EI
CSCD
北大核心
2018年第16期73-79,共7页
Automation of Electric Power Systems
基金
国家重点研发计划资助项目(2016YFB0900100)
国家自然科学基金资助项目(51477112)~~
关键词
配电网安全域
全维观测
安全距离
等效半径
凹陷
可视化
distribution system security region （DSSR）
full dimensional （F-D） observation
security distance
equivalent radius
concavity
visualization
