The PMU Interface using IEC 61850

As industry develops, the complexity of power networks will increase, which will place heavier demands on their reliable management. To increase the reliability of power networks, new technologies related to the operation of smart grids and micro grids are currently under development, and various intelligent devices are applied to control and monitor power networks. PMU is a microprocessor-based intelligent measuring device that has recently been used in various field and applications because of its high-resolution data information. Its main application is in wide-area power network monitoring and control. PMU is also used in applications in the fields of fault analysis and power quality analysis. Although PMU's high-resolution data is a main advantage, its large data make its interface, IEEE C37.118, difficult to handle.. C37.118 standard is used to interface PMU. It also describes on measurement requirements, measurements, error limits, data transmission, etc. It is also used to facilitate the effective transfer of large amounts of data and to describe the measuring reference of PMU. IEC 61850 is the communication interface standard for power facilities. Although it was developed for the system interface between power facilities for substation automation, its application field is growing rapidly. The IEC 61850 standard for the PMU interface has also developed as IEC 61850-90-5. Because most intelligent power facilities will be integrated via IEC 61850 standards, the development of a PMU interface using IEC 61850 has various advantages. For the development of management systems for powerful smart grid and micro grid, applications require much information, including static and dynamic data. Because PMU is an intelligent system that can provide time synchronized dynamic data, its interface with application systems will be very helpful in the design and development of control and monitoring systems. In this paper, we describe a PMU interface using IEC 61850 standards.