Voltage Regulation with Hybrid RES based Distributed Generation in the for Active Distribution Networks

In this paper adaptive zone-based Volt/VAR management is proposed, which coordinates active participation of DGs with conventional voltage regulation equipment. To achieve a flexible and scalable solution while minimizing complexity and requirements for data-handling capability, DG management systems are integrated with decentralized parts of the Volt/VAR management system in smaller geographical zones. Coordination of DGs with conventional voltage regulation equipment is based on predefined control hierarchies. However, to reduce requirements for data handling capability, the distribution grid is divided into zones with individual voltage regulation and reactive support schemes. To add flexibility and scalability, these zones can be combined into larger zones with a common Volt/VAR management scheme. This is referred to as adaptive zoning. The results indicate that the control schemes successfully restore voltage to within limits after disturbance of grid conditions. Adaptive zoning effectively reduces system complexity and requirements for data handling capability, while still ensuring a grid-wide solution. The proposed concept is implemented to hybrid RES method the simulation results are presented by using Matlab/Simulink platform.