Assessment of emission limits for disturbing installations connected to HV distribution networks in AT, CH, CZ and GE

In 2007 the German-Austrian-Swiss-Czech working group “D-A-CH-CZ EMC” published the 2nd edition of the “Technical Rules for the Assessment of Network Disturbances”. They are used in the 4 countries to assess the emission limits of large consuming and generating installations (in Germany consuming installations only). The rules define assessment methods and emission limits for LV and MV distribution networks. The HV distribution networks are not covered, because assessment methodologies are usually different to those used for LV and MV distribution networks. During the last 3 years the working group prepared an amendment document that is especially focused on HV distribution networks. The amendment has been published at the begin 2012. It describes methods for the assessment of emission limits for the following network disturbances: voltage changes and flicker, harmonics, unbalance, commutation notches, interharmonics and higher frequency components, ripple control systems. The paper gives an overview of the new amendment document and describes the assessment methods for selected network disturbances in detail. The application is illustrated by an example assessment for a distorting installation.