Research On The Key Technology Of 220kV Kumishi Substation Intelligent Transformation In Xinjiang

The metamorphosis of substation automation technology and microcomputer protection technology widespread application, greatly improve the automation level and management level of the power grid. However, due to the substation automation system and communication protocol between the protection equipment is not consistent, seamless integration is difficult, the system equipment and equipment between operational performance is poorer, short life cycle, secondary upgrade difficulty is big. At the same time, the station equipment and a secondary protection, background monitoring system of the analog signal, “four remote” signal between the implementation of the control and transport to use a large number of cable connection, which in turn increased spending money and manpower, anti-interference is also greatly reduced. IEC61850 standards promulgated by IEC(International Electrotechnical Commission), The IEC 61850-9-2 and IEC 61850-7-2 standard in the application of new intelligence station opened up a new road for the development of intelligent substation, makes the substation equipment of communication to achieve a unified standard, alleviate the contradiction between the interoperability between the device, effectively improve the reliability of communication. The development of intelligent devices, especially in intelligent switch equipment, and on-line state detection device, electronic transformer substation operation training simulation technology is mature, With the continuous updating and improvement of the computer network technology, such as for the intelligent substation transformation provides the necessary technical foundation.Based on the research of intelligent substation, on the basis of related theory and technology, the development of substation automation communication system are summarized and the development of intelligent technology present situation and future development trend, initially formed the overall building model of intelligent substation. On this basis, the author studies Xinjiang 220 kV Kumishi intelligent transformation of the actual engineering and construction scheme. By building a hierarchical structure, and realize the three layers and two nets of intelligent substation network communication structure, and discusses the construction of access to the equipment type selection and the problem such as compatibility mode, detailed analysis the basic principle of the bus and the substation bus, finally in view of the intelligent substation communication network structure carried on the thorough analysis. At the same time, this paper looks forward to the development of the second generation Smart Substation mode and technology applications.