A plant connectivity study contains a technical assessment of the possible connection of a plant according to the applicable Rules for Operating Distribution Systems (specifically, Annex 4) and it is often required by distribution system (DS) operators at their discretion.
The study is drawn up with regard to:
The distribution system operator will provide data for creating a connectivity study in the scope required for it to be drawn up.
The data usually include:
For power supplies connected to LV and HV networks, the scope is usually given by the station with the network supply transformer, the line with the assessed power supply and its recommended connecting point, and other lines with operated or planned power supplies and the loads of these lines. The operating states defined by the distribution system operator are assessed. Also, the study assesses possible overflows to higher voltage levels and their effect on the operation of the transformer voltage regulation.
The necessary calculations of the network run are performed using the PSSE programme (from Siemens) and, according to the distribution system operator’s requirements, they are performed for minimum summer loads, maximum winter loads or such loads at which maximum production in that network is reached.
The calculations are performed using the PSSE programme (from Siemens) on the basis of data obtained from the customer.
In terms of the company’s laboratory work and test engineering, there are several accredited workplaces providing a wide range of services. In the heavy current field, the HV/VHV test laboratory operates using a number of specified methods and tests which can also be applied to oils, the emissions and air pollutant measuring laboratories deal with air protection, the calibration laboratory for pressure and temperature deals with physical methods, while the fuel quality laboratory assesses fuels and their solid residues, including taking samples at a particular combustion or other source.