研究目的
To assess the maximum Photovoltaic power penetration that can be installed into a Distribution Network without violating Voltage Constraints using Probabilistic Load Flow analysis.
研究成果
The study successfully calculates the maximum Photovoltaic power penetration for a typical Greek Electricity Distribution grid using Probabilistic Load Flow with Monte Carlo method. The maximum allowable photovoltaic power integration is approximately 8.8 MW, with specific installation levels at certain busses to avoid voltage constraint violations. The approach can be extended to other distribution networks with different loads and dispersed generation units.
研究不足
The study focuses on voltage changes and does not consider the violation of thermal limits at the lines of the grid. The scenarios examined are strictly determined, limiting the solution to specific photovoltaic power integration levels.
1：Experimental Design and Method Selection:
The study employs Probabilistic Load Flow (PLF) using Monte Carlo techniques to account for the stochastic behavior of Load Demands and Renewable Energy Sources.
2：Sample Selection and Data Sources:
A typical Greek semi-urban Distribution Network of 20 kV nominal voltage, consisting of 13 busses, is used. Load demand and photovoltaic generation are considered as random variables following normal distribution.
3：List of Experimental Equipment and Materials:
The study uses Matlab software for all cases of studies.
4：Experimental Procedures and Operational Workflow:
The PLF is applied using the Monte Carlo method (5000 iterations) to calculate the mean values of the voltages and the standard deviations for different scenarios of photovoltaic unit penetration.
5：Data Analysis Methods:
The results focus on voltage changes and the maximum allowable photovoltaic power integration without violating voltage constraints.
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