高效P圈保护技术在电力通信网中的应用  

Application of High Efficient P-cycle Protection Techniques in Electric Power Communication Network

作　　者：李彬[1] 杨娇[1] 唐良瑞[1] 祁兵[1] 孙毅[1] 曾瑛 

机构地区：[1]华北电力大学电气与电子工程学院,北京市102206 [2]广东电网电力调度控制中心通信管理部,广东省广州市510600

出　　处：《电力系统自动化》2013年第20期83-87,共5页Automation of Electric Power Systems

基　　金：国家科技重大专项项目(2010ZX03006-005-001);中央高校基本科研业务费专项资金资助项目(12QN10);国家自然科学基金资助项目(51307051);广东电网公司科技项目(K-GD2012-292)~~

摘　　要：为解决电力通信网络带宽资源的瓶颈问题,文中针对电力通信网络现状,探索P圈保护技术在电力通信网络中的应用。引入分插复用器(ADM)P圈跨接链路扩展接口,以提供P圈的跨接链路保护。建立网络资源配置的数学模型,并以跨接链路算法生成基本P圈备选集,根据新开通业务加权因子并结合500kV站点的直连站点数目动态调节备选圈的权重,减小瓶颈节点产生的概率。在此基础上,提出一种启发式资源迭代配置算法,减小整数线性规划(ILP)方法的运算量,通过对路由信息修正提高保护资源的利用效率并扩展保护圈的容量效率。以广东电网东部区域500kV线路光缆覆盖的网络拓扑结构为例,分析电力通信网中的业务阻塞性能与资源冗余度,并验证该方法的有效性及未来的应用前景。In order to solve the network resource bottleneck problem of the electric power communication system in the process of the development of the power grid, the application of P-cycle protection in the electric power communication network is explored in light of the status quo of the network. The P-cycle straddle link protection interface on the advanced add/drop multiplexer （ADM） is introduced to provide highly efficient cycle protection. A mathematical model for network resource allocation is developed, and a heuristic algorithm is provided to support the integer linear programming （ILP） model. The candidate P-cycle set is calculated with the straddle link algorithm and the protection bandwidth is dynamically allocated according to the newly started service {actor and the number of stations directly connected to a 500 kV substation to reduce the probability of bottleneck station. On this basis of P-cycle enumeration algorithm, a heuristic resource iterative algorithm is proposed to improve the resource utilization with regulated routing information. Examples of the 500 kV fiber optic network in the eastern region of Guangdong power grid is presented as an example to illustrate the efficiency of the proposed approach. Resource redundancy and transaction blocking are analyzed and the prospects for future application are treated.

关 键 词：电力通信 生存性 保护恢复 资源冗余度 

分 类 号：TN915.853[电子电信—通信与信息系统]