دراسة تحليلية لتقييم تأثير ضعف جودة الربط في الوصلات الكهربائية الهوائية على أداء وكفاءة الشبكات الكهربائية

Abstract

This study aims to present an analytical model that highlights the weakness of electrical connection points and their impact during overload conditions, as well as during power loss within the medium and low voltage distribution network in a district of Misrata City. This area suffers from network instability and frequent outages. The study examined the condition of overhead electrical network components and included measurements of current flow in cables during different times of the day.

The study focuses on the impact of overhead electrical connections (cut-off links) used in transmission and distribution lines, and the poor linkage between these connections and distribution cables, which contributes to increased voltage loss within the network. It also identifies a mix of insulated and bare conductors within the distribution network, along with the widespread presence of overhead connections. This negatively affects voltage stability and load balancing, resulting in damage to consumers' electrical devices. One of the main factors influencing the lifespan of conductors is wind-induced aerial vibrations, which cause mechanical stress on overhead lines.

Field measurements conducted on the distribution lines revealed significant discrepancies between recorded values and the approved technical standards, indicating a deficiency in the overall network performance and the urgent need for corrective action