Design And Implementation Of The System For Scheduling Mode In Power Communication Network

The power communication network is a physical network that guarantees the power system to operate safely, with providing communication channels for other business departments, such as relay protection department, security stability control department and Automation department. As one of the most important step in ensuring the communication business, scheduling mode provides operation and maintenance work, like new channel creating, faults detection, measure and restore. However, with the complex network structure and diverse types of equipment resource in power system, scheduling mode comes across a lot of difficulties and challenges.According to the current situation of scheduling mode, improvements and innovations will be raised in this paper. Based on the fact that operation and maintenance implements on different network layers, the department of information and communication in State Grid Corporation of China has organized to construct the State Grid Telecommunication Management System, characterize as "Level3deployment-level4application". As one part of this system, scheduling mode system provides three main functions:cross-system scheduling implementation, scheduling compiling module, comparing module. To support the cooperation between superior system unit and subordinate unit system, split and merge mechanism is raised. The main technology issues need to be resolved includes the implementation of vertical connection interface and the selection of workflow engine. Scheduling compiling module includes scheduling compiling module, implementing scheduling and comparing module. Firstly the professional of dominant unit splits the scheduling into several parts and sends to each unit through vertical connection interface; then professional in each unit finishes the compiling, at last the system will merge all of compiled parts into a whole scheduling. The most difficult issue when compiling is to find an appropriate algorithm. Refer to the famous Dijkstra algorithm, a quick and accurate algorithm is proposed, that is, to determine several shortest paths after constructing the associated tree. After finishing the implementation of the whole scheduling, actual resource information will be collected to the database. Then the system will automatically compare the actual scheduling with the former scheduling, and update the resource data stored in system. And different channel types adopts different comparing algorithms:compare the difference of the first and last stations of the channel, their ports, slots and the transmission section when dredging or changing the channel, or simply judge whether the connection between slot and transmission section exists to achieve comparing.