Electrical Single Line Diagram for Photovoltaic Field
Budget: €30 – €250 EUR
We are looking for an experienced electrical engineer to assist us in solve this issue an Electrical Single Line Diagram (SLD) for a Photovoltaic field with a capacity of 2.8 MW.
"The single-line diagram lacks all the part related to the MT side protection systems (DG+SPG, DDI+SPI, backup system, etc.) as per CEI 0-16 standard." additionally they tell me this: Additionally, considering that the distribution network voltage in Umbria is at 20 kV, there is a transformer power limit of 2000 kVA with Vcc at 6%. In fact, CEI 0-16 standard states that 'The user must not install transformer sections exceeding this power threshold; except for cases of larger sizes provided that, due to the impedances between the connection point and the LV side of the transformers (MT user lines, transformer short-circuit impedance, any limiting reactances), the fault current calculated at the transformer's LV terminals is limited to a value equivalent to that obtained considering only the limiting effect due to transformers of the limit size referred to in the previous paragraph.' As described in CEI-016 standard paragraph 8.5.13. Therefore, it is requested either to change the reference Vcc % or to clearly and comprehensively include a limiting reactance in the single-line diagram."
The successful candidate will be responsible for accurately and comprehensively documenting the electrical system of the PV field.
"The single-line diagram lacks all the part related to the MT side protection systems (DG+SPG, DDI+SPI, backup system, etc.) as per CEI 0-16 standard." additionally they tell me this: Additionally, considering that the distribution network voltage in Umbria is at 20 kV, there is a transformer power limit of 2000 kVA with Vcc at 6%. In fact, CEI 0-16 standard states that 'The user must not install transformer sections exceeding this power threshold; except for cases of larger sizes provided that, due to the impedances between the connection point and the LV side of the transformers (MT user lines, transformer short-circuit impedance, any limiting reactances), the fault current calculated at the transformer's LV terminals is limited to a value equivalent to that obtained considering only the limiting effect due to transformers of the limit size referred to in the previous paragraph.' As described in CEI-016 standard paragraph 8.5.13. Therefore, it is requested either to change the reference Vcc % or to clearly and comprehensively include a limiting reactance in the single-line diagram."
The successful candidate will be responsible for accurately and comprehensively documenting the electrical system of the PV field.