国网莆田供电公司：自主施工促增效 设备升级强动能

Core Viewpoint - The upgrade of the bus protection device at the 220 kV Xindu Substation is aimed at enhancing the performance of the substation and ensuring the reliability of the power supply in the Putian area, thereby supporting local economic and social development [1][2]. Group 1: Project Background - The 220 kV Xindu Substation was put into operation in 2009 and serves the power supply needs of towns such as Xindu and Huangshizhen [2]. - The existing bus protection device has shown signs of aging, which directly impacts the reliability of the power supply [2]. - The bus protection device is crucial for quickly isolating faulty busbars from the power system, ensuring the safe and stable operation of the power grid [2]. Group 2: Upgrade Details - The upgrade involves replacing the existing bus protection device to improve the operational efficiency of the substation [2]. - The project requires the installation of 49 secondary cables, with the longest cable measuring 130 meters, presenting challenges such as twisting and entanglement during installation [3]. - The installation process is complicated by the limited working space in cable trenches and shafts, as well as the need for precise and standardized connections [3]. Group 3: Implementation and Challenges - The core maintenance team is following standardized procedures to ensure efficient and orderly progress of the upgrade [3]. - Despite challenging conditions, including hot weather, the team maintains a focused and meticulous approach to the installation [3]. - Each step of the process is subject to repeated checks to ensure high-quality execution of the upgrade [3]. Group 4: Expected Outcomes - The upgraded bus protection device will feature the latest system programs, offering faster response times and more accurate fault detection, thereby reducing the risk of erroneous operations [5]. - The team aims to complete the upgrade by the end of September, providing stronger technical support for the safe operation of the substation [5]. - This project will also enhance the core team's capabilities in risk management and autonomous implementation, contributing valuable experience for future projects [5].