Smart metering features for managing low voltage distribution grids

According to low cost smart meters requirements a simple method providing weekly basic statistical information about voltage levels at costumer's sites was applied. The results from the meters in nine low voltage grids are presented and discussed in this paper. Lowest minimum but also highest maximum voltage values were observed at sites away from stations. Especially the increase of voltage is caused by unbalanced load. The results presented demonstrate that such observations are useful for the planning of low voltage grids. Further investigations are ongoing and more detailed analysis tools for better understanding the behaviour of low voltage grids are planned.