Digital Fault Recorders & PMU
The fast, sure way to identify weaknesses
General Information
- Description
The quality of a power system depends on a multitude of parameters that are defined precisely in international standards. Digital Fault Recorders & PMU are recording devices designed to measure and document all these parameters on both the supplier and consumer side.
They offer numerous functions, including fault recorder, power and frequency recorder, system quality recorder, message printer, and network diagnosis system with fault locator.
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SIMEAS R-PMU
In the test laboratory of the electro-technical faculty and information technology of the Otto-von-Guericke-University, one of the latest developments of Siemens, the SIMEAS R-PMU, successfully passed the testing procedure. On the 16th October 2008 representatives received the first certificate of the TÜV Nord CERT and the University of Magdeburg for a Phasor Measurement Unit (PMU).
This high-precision and GPS synchronised PMU-technology, by means of its measured data, provides the means for the detection of instable system conditions in the network such as for example power swings. In close co-operation, scientists of the Otto-von-Guericke- University Magdeburg and TÜV NORD CERT (Prof. Dr. Ulrich Adolph) developed a new testing procedure. It makes possible a complete check of the PMU measurement accuracy as well as its network data functionality.
During the testing procedure the measurement devices are examined under static conditions as well as dynamic conditions as they are to be expected in real networks. This is of special relevance for the monitoring, control and protection of current, and especially of future energy supply networks.
During the development of the new testing procedure, researchers of the Virginia Tech in Blacksburg, USA, where Prof. Arun Phadke developed the PMU technology teamed up with Magdeburg scientists. Furthermore, a big thank you has to be extended to the SIEMENS PMU specialists of SIEMENS development, who enabled a successful test.
The constant capturing and monitoring of various parameters in electrical networks is of paramount interest for the reliable operation. Energy, derived from the latest technologies and techniques such as for example wind energy, are increasingly fed into electrical networks. They however complicate network control and its security, by their weather dependent and non-continual in-feed. The newly developed test procedure of the Magdeburg scientists is an important step toward more security in future energy supply networks.