浙江舟山：640千伏超高压直流电缆试验平台建成投运

Core Insights - The successful operation of the 640 kV ultra-high voltage direct current cable comprehensive performance testing platform marks a significant advancement in China's testing technology and equipment for ultra-high voltage direct current cables, supporting offshore clean energy development and interconnection of cross-sea power grids [2][4] Group 1: Technological Advancements - The newly developed platform utilizes all-direct current multi-physical field coupling technology, allowing precise simulation of 640 kV voltage and high current under complex marine environments, achieving international leading consistency between test data and actual operating conditions [3] - The platform features a new generation of optical fiber intelligent monitoring system, enabling millisecond-level dynamic capture and comprehensive analysis of cable conductor temperature rise, providing high-precision testing support for the optimization of ultra-high voltage cable design and verification of domestic insulation material performance [3] Group 2: Industry Impact - The platform addresses the long-standing limitations in evaluating the long-term live performance of high voltage cables, enabling continuous testing for hundreds of hours and early warning of potential failures, thus enhancing the entire lifecycle of cable engineering [3][4] - The operation of the 640 kV testing platform signifies the establishment of independent testing capabilities for direct current cables at voltage levels of 640 kV and below, laying the groundwork for the development of even higher voltage level cables in the future [4] Group 3: Strategic Goals - The "Guojiao No. 1" team aims to continue advancing intelligent and green technologies for ultra-high voltage cables, aligning with strategic needs for deep-sea wind power transmission and cross-sea energy internet, contributing to the achievement of carbon neutrality goals and the construction of a maritime power [4]