ENIP-2 PMU
ENIP-2 phasor measurement unit (PMU) integrates to automated control systems of substations and power plants as a part of Wide Area Measurement Systems (WAMS) used for power grid monitoring, as well as detection and prevention of instabilities in power grid networks.
ENIP-2 PMU measures first harmonic of voltage and current at a high rate assigning a precise timestamp to each measurement, known as synchrophasor. Time synchronization, which is critical for PMUs, is provided by the global positioning systems.
ENIP-2 PMU uses a built-in GPS receiver, or is synchronized by an external ENCS-2 module.
ENIP-2 PMU is designed to comply with both IEEE C37.118.1 classes P (Protection) and M (Measurement). The original signal processing algorithms rule out the influence of electromagnetic transients and higher harmonics on accuracy of measurements.
ENIP-2 PMU can be panel-mounted or mounted in cabinets. Typically, it is mounted in special cabinets, along with other components of WAMS.
Measurements
- voltages RMS (phase, phase-to-phase and average);
- currents RMS (phase and average);
- power (active, reactive and apparent: per phase and total);
- frequency;
- power factor (per phase and apparent);
- active and reactive energy in direct and reverse directions.
ENIP-2 uses 50 ms sliding window measurement calculation method. The values are updated every 20 ms.
