## 7 Conclusions  
This paper thoroughly analyzes the impact of distributed PV power generation systems in multi-level distribution networks, with a particular focus on the research of PV penetration rates and their points of connection on the performance of low-voltage distribution systems. * By comparing the operational performance of systems at different connection points, it was found that the impact of PV on voltage is more significant when the connection point is closer to the end of the feeder;
* Simultaneously, through the controlled analysis of the PV penetration rate variable, it was revealed that as the PV integration leads to an increase in node voltage, system losses exhibit a pattern of initially increasing, then decreasing, and finally increasing again, which has important practical guiding implications for the design of distribution networks;
* The paper proposes a simplified method for distribution systems. To validate its practicality and simplicity, the article illustrates two strategies that can increase the upper limit of PV generation system capacity, and these strategies were compared and analyzed, effectively solving the problem of the upper limit of PV capacity being restricted by node voltage and system losses;
* The paper derives the relationship between the increase in PV capacity limits and system losses by studying the reactive power absorbed by inverters, analyzing PV \begin{table}
\begin{tabular}{c c c c c} \hline PV-0 capacity (kw) & 0 & 36 & 72 & 108 & 144 \\ PV-a capacity (kw) & 0 & 16 & 36 & 52 & 73 \\ PV-b capacity (kw) & 0 & 36 & 72 & 108 & 144 \\ \(V_{\text{SS3}}\) (V) & 395 & 401 & 407 & 413 & 420 \\ \(V_{\text{SS3}}\) (V) & 396 & 400 & 403 & 406 & 410 \\ \(V_{\text{TS}}\) (V) & 396 & 401 & 406 & 411 & 416 \\ \(V_{\text{TS-0}}\) (V) & 395 & 401 & 406 & 412 & 418 \\ \(P_{\text{less}}\) (kW) & 0.758 & 0.3719 & 1.4606 & 3.7772 & 7.5762 \\ \(P_{\text{loss-0}}\) (kW) & 0.758 & 0.3844 & 1.0272 & 2.5932 & 5.1032 \\ \hline \end{tabular}
\end{table} 
Table 7: Node Voltage and System Loss Data Sheet. \begin{table}
\begin{tabular}{c c c c} \hline
**Description of Method** & **Cost** & **Effect Increase** & **Source** \\ \hline PV Reactive Power Control & 2\% & 13.7\% & Part 5 \\ PV Separate & 18\% & 35.6\% & Part 6 \\ Floating PV System & 1000\% & 10.3\% & [32] \\ On Load Tap Changer of TR & 30\% & 6.7\% & [33] \\ Energy Storage System & - & 20\% & [34] \\ \hline \end{tabular}
\end{table} 
Table 8: Comparison with existing work. segmentation strategy, and deriving the correlation formulas between the segmented PV and the original PV, with simulations verifying the superiority of this strategy. The simulation results, based on the ETAP 21.0.1 software platform, confirm that by segmenting the PV system into multiple units, it is possible to significantly increase the capacity limit of the PV power generation system while ensuring voltage stability and controlling losses. The integration of PV systems is a complex process that requires balancing technology, regulation, and user demands. Technological advancements and favorable policies can support the sustainable growth of this sector. For the successful integration of distributed PV systems into electrical networks, the following indicators must be carefully controlled: penetration rate, production, consumption ratio, and the operating duration under surplus conditions. These factors have a positive promoting effect on energy planning and the widespread application of clean energy in the power grid. There is also significant application value for the optimization design and verification of actual engineering projects. The research results provide key theoretical foundations and calculation tools for the deepening application of distributed PV power sources in multi-level distribution networks, system stability assessment, and engineering economy analysis.