Power Grid Integrated Data Network Simulation System Design And Implementation

Power grid integrated data network bears all information services of power system, compared with the general telecommunication network, Power grid integrated data network has higher requirements for network security, stability and reliability. With the continuous increase of network services and expansion of functionalities, the way of concentrating all information services on an unified network, will inevitably lead to such situations that for timely response to fault events and for optimization on the network structure and for the estimation of new services and equipments have become increasingly complex and also very difficult to verify. Thus, by simulation of integrated data network for research becomes increasingly necessary. The main work and achievements of this thesis are:After deep research and analysis in the network topology, device configuration, network protocols and bearer services of the integrated data network, This thesis built an integrated data network simulation system aims at the following three questions: First, design and implement a complete set of function modules; Second, Enhance the efficiency of parallel simulation and increase the availability of the simulation system. The main work is as follows:(1) Designed and built a set of integrated data network simulation system based on functional requirements and the actual network environment. that provides simple and friendly user interface, network topology, device properties, simulation tasks can be configured by user interface, to display a visual simulation running, Provide interfaces to set fault event and flow behavior changes event in network topology, user can visually see influences of the node or link failure and behavior change on the entire network.(2) To improve simulation efficiency and to optimize system performance., we have made a number of optimization and improvement. The simulation system is deployed on a cluster system and we provide serial/parallel simulator. For file synchronization modules whose efficiency and stability didn’t meet the requirement in actual use, designed a two-way file synchronization module based on dual center; To modify the drawback that the exist network partition method didn’t take the actual network traffic into consideration when partitioning the network, the thesis improved the method by combining with SNMP data, respectively proposed link weight based and node weight based partitioning algorithm; NS3 network simulator have poor support to analog bottom layer device, this thesis proposed optimization by using parallel packet transmission method. For parallel simulation system’s deficiencies, we provided NS3 multithread simulation methods.(3) Make full use of the real network’s data to optimize algorithms and implementation for simulation system. Collect real network SNMP and NetFlow data as the data source of the entire system, then design database for storage and management purpose for the original data after preprocessing, design a real traffic import method to make simulation tasks approach the real network traffic.This thesis modeled from real power grid integrated data network to build simulation system. Evaluate from the actual operation and test results, this thesis implemented a relatively complete set of function modules for the power grid integrated data network simulation system, with the simulation efficiency and performance get obvious promotion.