Analysis of voltage stability of transmission network with high photovoltaic (PV) integration is a challenging problem because of the stochastic generation of a solar system. Stabilization of the output power is an important criterion for determining the degree of penetration of PV in active distribution networks, considering loading capability. This article describes the effective voltage regulation strategy for the transmission system using the STATCOM module to resolve the drop and the effect aspects on the voltage stability in the transmission network. This paper analyzes also the influence of the STATCOM control system on preventing the combination of injection voltage STATCOM with harmonics from achieving pure voltage compensation. The proposed test system under analysis is the 53-Bus Tunisian distribution power network integrating 12 MW solar PV plant. Simulation results are added to demonstrate the efficiency of the proposed control technique for enhancing the power system quality based on the Tunisian grid code. Investigation of voltage stability shows that the dynamic behavior of the voltage depends strongly on the short circuit capacity of the power network at the point of PVs integration.

由于太阳能系统的随机发电，分析具有高光伏 (PV) 集成度的输电网络的电压稳定性是一个具有挑战性的问题。考虑到负载能力，输出功率的稳定性是确定光伏在有源配电网络中渗透程度的重要标准。本文介绍了使用 STATCOM 模块的输电系统的有效电压调节策略，以解决输电网络中的压降及其对电压稳定性的影响。本文还分析了STATCOM控制系统对防止注入电压STATCOM与谐波结合实现纯电压补偿的影响。所分析的拟议测试系统是集成了 12 MW 太阳能光伏电站的 53-Bus 突尼斯配电网。添加了仿真结果以证明所提出的控制技术的效率，以提高基于突尼斯电网代码的电力系统质量。电压稳定性的研究表明，电压的动态行为在很大程度上取决于光伏集成点电网的短路容量。