New Calibration and Measurement Capabilities at VTT MIKES
The CIPM Mutual Recognition Arrangement (CIPM MRA) is the framework through which National Metrology Institutes demonstrate the international equivalence of their measurement standards and the calibration and measurement certificates they issue. The outcomes of the CIPM MRA are the internationally recognized (peer-reviewed and approved) Calibration and Measurement Capabilities (CMCs) of the participating institutes. Approved CMCs are publicly available in the KCDB database.
In 2024, new CMCs (high voltage and current) of VTT MIKES have been accepted and published in KCDB for sampled value (SV) based digital substation instrumentation up to 200 kV:
- High AC current: current transformer ratio error;
- Instrument under study: current transformer, current transducer, merging unit;
- Method: comparison with reference standard,
- High AC current: current transformer phase displacement;
- Instrument under study: current transformer, current transducer, merging unit;
- Method: comparison with reference standard.
Traceable timing calibration service for PTP-based substation devices
With the rise of decentralized renewable energy resources, future power grids need real-time control and monitoring to maintain stability under challenging conditions. Digital substation solutions are increasingly replacing aging analogue instrumentation. To support the European power industry, the European Metrology Partnership project Metrology for digital substation instrumentation, Digital-IT(* (coordinated by VTT MIKES) is developing calibration reference systems for digital substation equipment. As part of this work, we aim to introduce the first traceable timing calibration service for Precision Timing Protocol (PTPv2) based substation devices. In practice, we are setting up a link between a physical 1-pulse-per-second (1PPS) timing signal and a PTPv2 link between a device under calibration and its master clock. Once a traceable link between a physical timing standard and PTPv2 has been established, the findings will be shared with the IEC technical committee TC 38 (Instrument transformers) to recommend amendments to existing standards.
For more information see the EURAMET news or contact the project coordinator Jari Hällström.
Videos and presentations of the workshop ‘Measurements and metering in digital substations’ now available online
The Digital-IT project together with the industry-funded project DigIT held a successful online workshop Measurements and metering in digital substations with 85 attendees. The workshop presentations covered topics including digital substation measurements, stand-alone merging unit (SAMU) performance and precision time protocol (PTP) calibrations. It also featured a review of results from both projects as well as contributions from stakeholders.
Selected presentations and recordings from the workshop are now available online.
For more information see the EURAMET news or contact the project coordinator Jari Hällström.
____________________________________________________________________________________
* The project (21NRM02 Digital-IT) has received funding from the European Partnership on Metrology, co-financed from the European Union’s Horizon Europe Research and Innovation Programme and by the Participating States.
