Online Monitoring Technology And Application In Substation

As the grid scale is expanding, the converting station as the carriers of electric power transmission and distribution, the influence of the equipment failures of them is becoming larger. If it is not handled well, the whole system may collapse, which would have an impact on production and life. The use of online monitoring technology for substation equipment can obtain the aim of reliable and effective equipment condition monitoring, and protect the safe operation of substation equipment, and will lay a solid foundation for safe, reliable operation of power grid. In addition, along with the our country’s electric power reform, by condition monitoring and fault diagnosis for substation equipment to change the traditional plan periodic maintenance to condition based maintenance in order to reduce production cost of electricity enterprises has been an important way of the enterprise to cost reduction.Based on the status online monitoring technology, this paper mainly introduces the principle of online monitoring technology of transformer, GIS, lightning arrester, circuit breakers and other equipment in the substation, and discusses the characteristics, architecture, communication standard, advanced application of the hierarchical structure of the main substation equipment online monitoring system. In addition, according to the installation and operation of Ningbo electric power grid online monitoring, and through the research on online monitoring products as well as the mainstream manufacturers, makes some comparative analysis of the device principle, technical characteristics and practical application to provide technical constraints of equipment online monitoring substation and Select the reliable operation and advanced technology, on-line monitoring equipment.At last of the paper, the advantages and investment in smart substation on-line monitoring system is analyzed and calculated, and some examples of the equipment state monitoring system is provided, to explain the importance of the rational use of online monitoring.