| With the development of national economy, the demand of electricity increases continuously. The development of power network requires that the data of electric power dispatch has the reliability of communication, the real time and accuracy of information transmission. Electric power dispatching data network is the basis of power production and maintenance of power network. In this paper, from the ’domestic and foreign literature study, combined with the daily work of the Nanchang company control center, the network of power data network to carry out a preliminary study.(1) Foreign viewsThe United States researchers define the grid development as "smart grid", "smart grid" for the integration of power users and the market to provide theoretical support and technical support, in theory, can be built into the. system is intelligent, that is, with self-healing function and automatic response function, intelligent exchange of information, to meet the human society to respond to emergencies.Europe has also made similar assumptions and idea for "smart grid", but Europe is more biased comprehensive information integration and all-round monitoring, advocate a market-based electricity trading, power supply, the maximum possible improve the safety factor of power grid operation, efficiency threshold and operational efficiency, impact on the environment down to minimum, so green and meet the growing life and industrial demand.(2) Domestic research directionIn China, the China State Grid Corp has been adhering to the digital, information technology to improve the level of automation of power grids and improve the level of enterprise management modernization. In transmission, substation and power distribution, the dynamic and timely reporting and intelligence of the statistical data is realized. The network construction of broadband network construction has already begun to take shape.At present, the use of national power grid scheduling automation system has been in the international first-class level, in the known 6 IEC61850 and IEC61970 standard maneuverability test, the experimental results show that the power dispatching automation integrated system in perfect scheduling data, adjust the integrated data platform is in the leading level.The State Grid encourages companies to set up digital power companies, use broadband networks for transmission and distribution, scheduling and marketing management; use video surveillance to achieve remote control of substations.(3) There is a shortageThe power grid enterprise application system can basically meet the daily work of the business and a one to two departments, incompatibility between systems, different data formats makes the company system is unlikely to do data on the internal coordination linkage, resulting in information resources scattered and formed one "information isolated island, longitudinal mufti-level, mufti lateral system and disorderly information, incomplete and repeat ability makes the information can not be shared, not to mention information effective, efficient processing.Power dispatching data network is based on the communication network, and the routing, switching, and service are realized. To improve the power dispatch information, the information collection and integration, the integrated transmission platform is allocated to the respective needs, which greatly improves the unified data transmission and exchange between:the dispatching center and the center and the central station.In the continuous development of the power grid, the power dispatch data network has the function of the power grid dispatching, automation control and so on. At the same time as the management of operation, security and stability control and automation of the foundation, to ensure the normal operation of the electricity market, improve the power system modernization, has become an indispensable condition of the system, the normal production management is also benefit from this, thinking and strengthening the construction of data network is also very necessary.Compared with other domestic industry, power industry has different properties, power grid enterprises often face the operation level, cross a wide range, poor production conditions and risk high, in order to improve the operating efficiency of power grid, power grid enterprises often want safe operation of power grid, scheduling, reduce the loss, pressure loss, so rely on the convenience of communication developed the high quality communication effect, Nanchang power supply company will use this kind of new technology, new technology to protect the power grid dispatching remote control, makes the grid more stable and secure, construction of electric power communication.network also highlights the high economic price value.With the power grid construction in Nanchang, Nanchang power supply company in operation of the 13 220 kV power transmission project. At the same time, Nanchang electric power dispatching data communication network is experiencing a severe test, in urgent need of capacity expansion, increase network bandwidth and the network transmission speed is improved, plan within three years basically completed in optical fiber communication based city and county levels, transmission network, District of Nanchang City wide coverage.Grid scheduling system is a platform with high level of digital level, and it has been built up in the domestic technology level, the energy management system and the electric energy metering system, which is controlled by the network transmission limit in the platform. Today, the rapid development of science and technology, the traditional network application system has been unable to meet the demand for electricity development, and even can not adapt to the trend of the technology, the network trend of grid data has become irreversible, the information transmission and organization in the system will change. In order to meet the needs of the business system, the basic requirements for the real-time performance, the key is to provide the network for each application domain data platform, that is, power dispatch data network.The national grid has been committed to the development of UHV power grid and to make it safe and stable operation, to meet the security, reliability and other requirements of the power grid dispatching, and to provide a stable technical support for the backup scheduling technology support system, and the next step of the scheduling data network is given to.The research content of this thesis is to analyze the power grid dispatching in Nanchang area, which is to analyze the requirement of the scheduling in real operation:Firstly, the paper introduces the development status and existing problems of , power communication network, power dispatch data network, from business requirements, technology system, routing strategy, network function, network performance, network security and network management. |
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