Miscellaneous data recorders

Tender description

This tender process is complete. EirGrid has procured a supplier of Power Quality/Transient Fault Recorders to be used on the 400 kV, 275 kV, 220 kV and 110 kV Transmission network on the island of Ireland. The recorders shall be installed in transmission stations. The Framework Agreement period will be for an initial duration of five years with the option to extend annually for up to an additional three years, subject always to the satisfactory performance of the supplier. This tender process is complete. EirGrid procured a supplier of Power Quality/Transient Fault Recorders to be used on the 400 kV, 275 kV, 220 kV and 110 kV Transmission network on the island of Ireland. The recorders shall be installed in transmission stations and their primary functions will be: — Fault/Event recording in response to under, — over and rate-of-change of voltage, — current, — frequency and active power in addition to remote manual and binary input triggers, — Power Quality measurements, including flicker, unbalance and harmonics measurements up to and including the 50th harmonic, and, — data streaming on a continuous basis for Phasor Monitoring Units (PMU) application. The recorders shall be capable of receiving GPS time-stamped voltage and current inputs derived from either protection or metering class instrument transformer cores and shall monitor the circuit passively. The recorder, in addition to current and voltage measurements, should provide the following: — three-phase Active and Reactive Power measurements using the appropriate voltage and current channels for calculation, — the fundamental frequency of voltage measurement. It is desirable that the frequency is calculated using a phase-to-phase voltage, and, — positive, negative and zero phase sequence voltages and currents.