中国电机工程学报2017，Vol.37Issue(10)：2840-2851,12.DOI:10.13334/j.0258-8013.pcsee.160246
配电网的安全距离:定义与方法
Security Distance of Distribution Network: Definition and Method
摘要
Abstract
The rigorous definition of the security distance in distribution network was proposed,and a new security evaluation method based on security distance was developed.Security distance of distribution network is the distance from the current state (operating point) to the security boundaries,and it is critical data for security evaluation.Firstly,a rigorous definition of security distance was proposed,in which two kinds of security distances were defined,including geometric security distance (GSD) and feeder security distance (FSD).The calculation formulas were also presented.Secondly,the application of the security distance in security evaluation was analyzed.It is found that GSD can provide conservative security margin of multiple feeder loads;and FSD can provide accurate security margin of single feeder load.Furthermore,a new security evaluation method based on operating point displacement and security distance was proposed.This method uses both the displacement of the new point and the security information of the original point to obtain the security evaluation results of the new point.It is much faster than conventional security distance method,which is suitable for real time tracking and security evaluation for changing operating points in real operation.Finally,the results of FSD and GSD as well as the accuracy and speed of the proposed method are verified and compared in the case study.The research is helpful to understand the security distance of distribution network;and makes the security distance more efficient for online security evaluation application.关键词
配电网/安全距离/安全边界/几何安全距离/馈线安全距离/安全评价/工作点位移Key words
distribution network/security distance/security boundary/geometric security distance (GSD)/feeder security distance (FSD)/security evaluation/displacement分类
信息技术与安全科学引用本文复制引用
肖峻,甄国栋,王博,王成山..配电网的安全距离:定义与方法[J].中国电机工程学报,2017,37(10):2840-2851,12.基金项目
国家重点研发计划项目课题(2016YFB0900103) （2016YFB0900103）
国家自然科学基金项目(51477112) （51477112）
国家电网公司科技项目(DZ71-16-039).The National Key Research and Development Program of China (2016YFB0900103) （DZ71-16-039）
Project Supported by National Natural Science Foundation of China (51477112) （51477112）
Science and Technology Project of SGCC (DZ71-16-039). （DZ71-16-039）
