复杂系统与复杂性科学
複雜繫統與複雜性科學
복잡계통여복잡성과학
COMPLEX SYSTEMS AND COMPLEXITY SCIENCE
2013年
1期
53-60
,共8页
蔡晔%陈彦如%曹一家%黄小庆%谭玉东
蔡曄%陳彥如%曹一傢%黃小慶%譚玉東
채엽%진언여%조일가%황소경%담옥동
连锁故障%复杂网络%结构熵%负荷分配
連鎖故障%複雜網絡%結構熵%負荷分配
련쇄고장%복잡망락%결구적%부하분배
cascading failure%complex networks%structure entropy%load distribution
为研究大规模互联电网连锁故障的发生机理,选取输电线路的电抗值作为线路权重,建立电网加权拓扑模型,定义综合考虑节点和边差异性的加权网络拓扑模型结构熵的概念,以此描述故障演化过程中电网拓扑结构的不均衡性.对新英格兰39节点系统和IEEE118节点系统动态仿真实验说明,在连锁故障中,结构熵值的变化规律能较好地表征连锁故障的传播特性,同时结构熵值越小,系统损失负荷越多.
為研究大規模互聯電網連鎖故障的髮生機理,選取輸電線路的電抗值作為線路權重,建立電網加權拓撲模型,定義綜閤攷慮節點和邊差異性的加權網絡拓撲模型結構熵的概唸,以此描述故障縯化過程中電網拓撲結構的不均衡性.對新英格蘭39節點繫統和IEEE118節點繫統動態倣真實驗說明,在連鎖故障中,結構熵值的變化規律能較好地錶徵連鎖故障的傳播特性,同時結構熵值越小,繫統損失負荷越多.
위연구대규모호련전망련쇄고장적발생궤리,선취수전선로적전항치작위선로권중,건립전망가권탁복모형,정의종합고필절점화변차이성적가권망락탁복모형결구적적개념,이차묘술고장연화과정중전망탁복결구적불균형성.대신영격란39절점계통화IEEE118절점계통동태방진실험설명,재련쇄고장중,결구적치적변화규률능교호지표정련쇄고장적전파특성,동시결구적치월소,계통손실부하월다.
@@@@To study the mechanism of the blackouts in power systems ,we propose an impedance‐based topological model and cascading failure mechanism model for weighted power grid .Consid‐ering both node and edge differences a new network structure entropy is defined to quantitatively describe the faults evolution and unbalanced distribution of power network structure .Simulation results on the New England 39‐bus system and IEEE118‐bus system indicate that power network structure entropy has important influence on the spread of cascading failures .The smaller net‐work structure entropy is ,the more load loss in power system .