Location

This example model can be found in the software under the category "Distribution and Industrial Power Systems" > "Feeder_20kV_600Node.ecf".

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Description

The model consists of a simplified version (reduction of the lines number and aggregation of the low-voltage distribution networks into loads) of a real French 20kV network, exploited in a radial topology studied in 2012 by researchers from Grenoble Institute of Technology and Université de Lilles. [1] This example model was initially designed for power flow management studies using DGs using a radial distribution network. The substation contains a “YY” transformer (110 kV/36 kV; 108 MVA) with a 17 taps OLTC (On Load Tap Changer). From this substation five feeders are connected. This power network has 205 bus, 205 lines and 122 loads. The average load is about 15 MW (residential: 30%; industrial: 40%; service sector: 30%). The total length of the lines is about 68 km for an average length of main lines about 7.5 km. Schematic of the distribution network is presented in figure below. First table summarizes the description of the distribution network and second table lists the components used in the model.

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Schematic of the distribution network

Distribution Power Network:

List of component in HYPERSIM model:

Simulation and Results

The implemented scenario involves applying a fault for 0.1 seconds to bus B2, located directly at the output of the transformer leading to the 5 feeders. The fault occurs precisely at t = 0.2s and is cleared at t = 0.3s. The system goes back into steady-state after less than 0.1 s after the fault is cleared. The following figures shows the 3-phase voltage and current measured at the source and at the beginning and end of each feeder. Legends specify at which bus of each feeder the voltages and currents are measured.

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Source Voltage and Currents

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Feeder 1 Voltage and Currents

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Feeder 2 Voltage and Currents

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Feeder 3 Voltage and Currents

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Feeder 4 Voltage and Currents

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Feeder 5 Voltage and Currents

Reference

[ 1 ] A. Teninge, Y. Besanger, F. Colas, H. Fakham and X. Guillaud, "Real-time simulation of a medium scale distribution network: Decoupling method for multi-CPU computation," 2012 Complexity in Engineering (COMPENG). Proceedings, Aachen, Germany, 2012, pp. 1-6, doi: 10.1109/CompEng.2012.6242944. keywords: {Computational modeling;Real time systems;Load modeling;Substations;Reactive power;Delay;Load management;Power distribution network;distributed generation;real-time simulation;voltage var control},