Cascading failure analysis of power flow on wind power based on complex network theory  

作　　者：Yushu SUN Xisheng TANG 

机构地区：[1]Institute of Electrical Engineering,Chinese Academy of Sciences,Beijing,China

出　　处：《Journal of Modern Power Systems and Clean Energy》2014年第4期411-421,共11页现代电力系统与清洁能源学报（英文）

基　　金：This work was financially supported by a grant from the National Basic Research Program of China(973 Program)(No.2012CB215204);the Key Project of the CAS Knowledge Innovation Program“Research and demonstration of the coordinated control system based on multi-complementary energy storage”(No.KGCX2-EW-330).

摘　　要：Cascading failure is a potential threat in power systems with the scale development of wind power,especially for the large-scale grid-connected and long distance transmission wind power base in China.This introduces a complex network theory(CNT)for cascading failure analysis considering wind farm integration.A cascading failure power flow analysis model for complex power networks is established with improved network topology principles and methods.The network load and boundary conditions are determined to reflect the operational states of power systems.Three typical network evaluation indicators are used to evaluate the topology characteristics of power network before and after malfunction including connectivity level,global effective performance and percentage of load loss(PLL).The impacts of node removal,grid current tolerance capability,wind power instantaneous penetrations,and wind farm coupling points on the power grid are analyzed based on the IEEE 30 bus system.Through the simulation analysis,the occurrence mechanism and main influence factors of cascading failure are determined.Finally,corresponding defense strategies are proposed to reduce the hazards of cascading failure in power systems.

关 键 词：Complex network theory(CNT) Cascading failure Wind power Power flow analysis model Defense strategies 

分 类 号：TP3[自动化与计算机技术—计算机科学与技术]