摘要
随着智能电网和能源互联网的快速发展,电力通信网(EPCN)承载的业务越来越多样。为提高EPCN资源利用率,降低网络风险,保证电力业务的可靠传输,提出了一种区分电力业务保护质量的链路故障差异化保护(DLFDP)策略。首先,基于电力通信业务流特征,分析链路失效风险,对EPCN中业务风险进行建模。其次,根据业务重要度和链路风险度提出了基于服务质量的3类保护模型,考虑负载均衡的影响,将网络中的业务向风险较低的链路上进行疏导,在为高重要度业务分配独立保护路径的基础上,复用P圈来保护高风险链路,同时降低网络的阻塞率和风险。仿真结果表明,DLFDP算法可以更加高效地利用网络资源,降低网络中的业务风险和链路风险,同时降低网络的阻塞率。
With the rapid development of the smart grid and the Energy Internet, the services carried by the electric power communication network(EPCN) are becoming more diverse. In order to improve the utilization of EPCN resources, reduce the network risk, and ensure the reliable transmission of power services, this paper proposes a differential protection strategy of link fault(DLFDP) for distinguishing protection quality of power business. Firstly, based on the characteristics of power communication service flow, the failure risk of the link is analyzed, and the business risk in EPCN is modeled. Secondly, based on the importance of the business and the risk of the link, three types of protection models based on service quality are proposed.Considering the impact of load balancing, the services in the network are channeled to the links with lower risk, and the services are allocated for high importance. Based on the independent redundant path, the multiplexed P-cycle protects the high-risk link to simultaneously reduce the network blocking rate and risk. The simulation results show that the DLFDP algorithm can effectively utilize network resources, reduce service risk and link risk in the network, and reduce the network blocking rate.
作者
祁兵
叶欣
李彬
刘林
程紫运
奚培锋
QI Bing;YE Xin;LI Bin;LIU Lin;CHENG Ziyun;XI Peifeng(School of Electrical and Electronic Engineering,North China Electric Power University,Beijing 102206,China;Economics and Technology Research Institute of State Grid Gansu Electric Power Company,Lanzhou 730050,China;Shanghai Key Laboratory of Smart Grid Demand Response(Shanghai Electrical Apparatus Research Institute(Group)Co.,Ltd.),Shanghai 200063,China)
出处
《电力系统自动化》
EI
CSCD
北大核心
2020年第11期181-188,共8页
Automation of Electric Power Systems
基金
中央高校基本科研业务费专项资金资助项目(2019MS004)。
关键词
电力通信网
业务风险
链路风险
差异化保护
electric power communication network
business risk
link risk
differential protection
