Characterised measuring system for PQ measurements on the MV grid

• Abstract:

  The features of a Power Quality measurement system which includes both voltage and current transducers and a self-developed measuring instrument are described. The system is intended for measurements in substations at medium voltage level. A Rogowski coil and a voltage divider are the used transducers, whereas the measuring system is based on a Reconfigurable I/O-FPGA system with embedded software. Attention is focused on the procedures adopted for the characterisation of the current sensor, which is carried out taking into account the expected on-site measurement conditions, allowing reduction of the measurement uncertainty of nearly an order of magnitude. An example of use of the measurement system in a private substation that connects an industrial load and two photo-voltaic generation plants to the public MV voltage network is presented, together with the associated current uncertainty budget.
• Keywords:

  Power Quality measurement, Current transducers, MV measurements, Calibration
• Download:

  IMEKO-TC4-2013-134.pdf
• DOI:

  _unreg_tc4-2013.134

Event details:

• IMEKO TC:

  TC4
• Event name:

  TC4 Symposium 2013
• Title:

  19th IMEKO TC4 Symposium Measurements of Electrical Quantities (together with 17th TC4 IWADC Workshop on ADC and DAC Modelling and Testing)
• Place:

  Barcelona, SPAIN
• Time:

  18 July 2013 - 19 July 2013