What is PD IEC/TR 61000-3-6—Connection of distorting installations to power systems about?
PD IEC/TR 61000-3-6 is a part of an international multi-series standard that covers the aspects of Electromagnetic compatibility (EMC) for public power systems.
PD IEC/TR 61000-3-6 is a technical report that provides guidance on principles, used as the basis for determining the requirements for the connection of distorting installations to MV, HV, and EHV public power systems.
PD IEC/TR 61000-3-6 addresses the allocation of the capacity of the system to absorb disturbances. It gives guidance for the coordination of the harmonic voltages between different voltage levels to meet the compatibility levels at the point of utilization.
The boundaries between the various voltage levels may be different for different countries. PD IEC/TR 61000-3-6 uses the following terms for system voltages:
- Low voltage (LV) refers to Un ≤ 1 kV
- Medium voltage (MV) refers to 1 kV < Un ≤ 35 kV
- High voltage (HV) refers to 35 kV < Un ≤ 230 kV
- Extra high voltage (EHV) refers to 230 kV < Un
Note 1: In addressing installations, PD IEC/TR 61000-3-6 is not intended to replace equipment standards for emission limits.
Note 2: PD IEC/TR 61000-3-6 does not address how to mitigate disturbances, nor does PD IEC/TR 61000-3-6 address how the capacity of the system can be increased.
Note 3: The recommendations in PD IEC/TR 61000-3-6 do not address harmonic interference phenomena in communication circuits (i.e., only the first of the above categories is addressed).
Who is PD IEC/TR 61000-3-6—Connection of distorting installations to power systems for?
PD IEC/TR 61000-3-6 on the connection of distorting installations to MV, HV, and EHV power systems is relevant to:
- EMC testing authorities
- Electrical engineers
- Power system engineers
- Electromagnetic engineers
- Installers of MV, HV, and EHV power system
Why should you use PD IEC/TR 61000-3-6—Connection of distorting installations to power systems?
Electromagnetic compatibility (EMC) is the ability of an equipment or system to function satisfactorily in its electromagnetic environment without introducing intolerable electromagnetic disturbances to anything in that environment.
PD IEC/TR 61000-3-6 sets a framework for a distorting installation, i.e., an installation (which may be a load or a generator) that produces harmonics and interharmonics. It provides guidance to system operators or owners on engineering practices, which facilitates the provision of adequate service quality for all connected end-users. PD IEC/TR 61000-3-6 also presents you with guidance on emission, emission level, and emission limit. It lays out the immunity level that is described as the maximum level of a given electromagnetic disturbance on a particular device, equipment, or system for which it remains capable of operating with a declared degree of performance. PD IEC/TR 61000-3-6 recommends a coordination approach that relies on individual emission levels being derived from the planning levels. Thus, the same indices are applied both while evaluating actual measurements against the emission limits and against the planning levels.
Overall, PD IEC/TR 61000-3-6 serves the objective for the assessment of emission limits for the connection of distorting installations to MV, HV, and EHV power systems.