数字化变电站介绍（Introduction of digital substation）.doc

数字化变电站介绍（Introduction of digital substation） Introduction of digital substation 1 digital substation technical characteristics The core technology of digital substation equipment is two times a network of digital devices and, in the process layer, spacer layer and control layer, IEC61850 in accordance with international standards, implementation of substation and substation centralized control station and information sharing between the interoperation process. 1.1 digital primary equipment. The digital primary equipment includes electronic transformer, intelligent switch and other intelligent equipment in the station. Through the realization of equipment in digital, to achieve the effective electrical isolation in the one or two system, increase the range of dynamic measurement of electrical quantities and improve the measurement accuracy, to achieve the transformation and redundant information from the device redundancy of conventional substation to modern substation and provides a solid foundation for information integration application. 1.2, network based information exchange. Digital substation using IEC61850 standard network communication system based on information interaction between substation equipment through high-speed network, two equipment no longer appear I / O interface function of repetition, function of conventional devices into a logical function module, realize the data and resource sharing. 1.3, object-oriented, hierarchical and distributed modeling ideas. According to the object-oriented and hierarchical distributed modeling idea of IEC61850, a structured semantic space for information interaction is established for digital substation automation system. The semantic space is not only a consistent and determined for the application, and can be expanded and reconstructed to realize the consistency of semantic information model and information, to ensure interoperability and sharing of information inside and outside the station. 1.4 information int