Determining Criteria for the Selection of
Optimal Grounding for Medium-Voltage
Electricity Distribution Networks
The most important features of the project include the creation of criteria for the
selection of optimal neutral point grounding for medium-voltage (MV) networks
and the selection of adequate relay protection. The implementation and interpretation
of measurement results, impact valuation for each parameter and the elaboration
of a mathematical model shall enable the Institute’s experts to create a computer
model for determination of voltage and current conditions.
The way in which neutral point grounding is performed influences network operation
conditions, the quality of supply, safety of personnel, type and price of utilised
equipment, the selection of network configuration, protection and automation. It is
necessary to measure voltage and current conditions in the network during normal
and extraordinary operating conditions and to register disturbance and its duration.
On a theoretical basis, it is necessary to make a mathematical and computer network
model. The model needs to be verified through adequate measurements.
Technical and economic parameters would provide a basis for determining criteria
for selecting modalities in which to perform grounding within MV networks. In addition,
the parameters would facilitate the selection of other necessary equipment.
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