电网技术
電網技術
전망기술
Power System Technology
2015年
4期
1053-1058
,共6页
耦合模型%级联失效%负载重分配%节点重要度
耦閤模型%級聯失效%負載重分配%節點重要度
우합모형%급련실효%부재중분배%절점중요도
coupling model%cascading failure%load redistribution%node importance
电网与信息通信(information and communication technology，ICT)网的关联程度不断增强，网络节点的重要度评估需要考虑双网的耦合特性。为此，针对传统单一网络节点重要度评估算法在关联性方面的不足，提出一种考虑级联失效的耦合网络节点重要度评估方法，并以电网和 ICT网拓扑关联关系为基础建立了双网耦合模型。该方法从带负载耦合网络出发，在级联失效过程中加入负载因素，引入最大负载分支，采用相邻节点平均负载均衡度和网络负载率参数融合方法衡量失效节点对网络的影响，从而判断耦合网络节点的重要度，避免了单一指标在单个网络中度量节点重要性的局限性。采用IEEE30节点系统构建耦合网络仿真模型，并与节点收缩法和 Max-Cas 算法进行了对比，结果表明所提方法在鉴别触发级联失效节点的基础上更细致地区分耦合网络中各节点重要度差异。
電網與信息通信(information and communication technology，ICT)網的關聯程度不斷增彊，網絡節點的重要度評估需要攷慮雙網的耦閤特性。為此，針對傳統單一網絡節點重要度評估算法在關聯性方麵的不足，提齣一種攷慮級聯失效的耦閤網絡節點重要度評估方法，併以電網和 ICT網拓撲關聯關繫為基礎建立瞭雙網耦閤模型。該方法從帶負載耦閤網絡齣髮，在級聯失效過程中加入負載因素，引入最大負載分支，採用相鄰節點平均負載均衡度和網絡負載率參數融閤方法衡量失效節點對網絡的影響，從而判斷耦閤網絡節點的重要度，避免瞭單一指標在單箇網絡中度量節點重要性的跼限性。採用IEEE30節點繫統構建耦閤網絡倣真模型，併與節點收縮法和 Max-Cas 算法進行瞭對比，結果錶明所提方法在鑒彆觸髮級聯失效節點的基礎上更細緻地區分耦閤網絡中各節點重要度差異。
전망여신식통신(information and communication technology，ICT)망적관련정도불단증강，망락절점적중요도평고수요고필쌍망적우합특성。위차，침대전통단일망락절점중요도평고산법재관련성방면적불족，제출일충고필급련실효적우합망락절점중요도평고방법，병이전망화 ICT망탁복관련관계위기출건립료쌍망우합모형。해방법종대부재우합망락출발，재급련실효과정중가입부재인소，인입최대부재분지，채용상린절점평균부재균형도화망락부재솔삼수융합방법형량실효절점대망락적영향，종이판단우합망락절점적중요도，피면료단일지표재단개망락중도량절점중요성적국한성。채용IEEE30절점계통구건우합망락방진모형，병여절점수축법화 Max-Cas 산법진행료대비，결과표명소제방법재감별촉발급련실효절점적기출상경세치지구분우합망락중각절점중요도차이。
The interdependence between power grid and information and communication technology (ICT) network is increasingly enhanced, so in the evaluation on importance of network nodes the coupling characteristics between the two networks should be considered. For this reason, in allusion to the insufficiency of traditional node importance evaluation algorithm for single network, a node importance evaluation method for coupled networks, in which the cascading failure is taken into account, is proposed and based on the topological incidence relation between power grid and ICT network a dual network coupling model is established. Starting from the loaded coupling network, the proposed method adds in the load factor during the process of cascading failure and leads in the branch with the maximum load to cope with post-failure subnets and the impacts of invalid node on the network are measured by merging the average load balance degree of adjacent nodes with the parameter of network load rate, thus the importance of nodes in the coupled network can be judged, and the limitation of measuring node importance by single index in single network can be avoided. A simulation model of coupled networks is constructed by IEEE 30-bus system and simulation results are contrasted with those by node contraction method and Max-Cas algorithm respectively, contrast results show that on the basis of identifying the node that triggers the cascading failure the proposed method can distinguish importance differences among nodes in the coupled network in detail.
