EASA(SZ:300215) Zhong Guo Dian Li Bao·2025-07-28 08:06Core Viewpoint - The successful completion of the 750 kV high-voltage parallel reactor on-site partial discharge testing system by the State Grid Qinghai Electric Power Research Institute represents a significant advancement in ensuring the safety and stability of the power grid, particularly in high-altitude environments [1][4]. Group 1: Importance of High-Voltage Parallel Reactors - High-voltage parallel reactors are crucial for maintaining voltage stability and economic operation in ultra/high voltage long-distance transmission systems [1]. - Between 2011 and 2015, nine instances of 750 kV reactors in the Qinghai power grid experienced failures due to insulation defects, highlighting the need for effective diagnostic tools [2]. Group 2: Innovative Solutions - The research team at the State Grid Qinghai Electric Power Research Institute developed a unique solution combining the "energy balance" principle with "reactive wave blocking" technology, significantly reducing the external power input requirements by over 90% [3]. - The application of reactive wave blocking technology improved the signal-to-noise ratio and detection sensitivity by over 20%, enabling clearer identification of internal issues in complex field environments [3]. Group 3: Achievements and Economic Impact - After 19 months of development, the team created the world's first 750 kV high-voltage parallel reactor on-site partial discharge testing system, addressing the challenges of precise detection in complex electromagnetic environments [4]. - The technology has generated economic benefits exceeding 49.92 million yuan through various inspections and diagnostics across multiple substations in Qinghai and Gansu provinces [5]. - The project received the third prize for the National Grid Corporation's Technology Invention Award for 2024, indicating its significance in enhancing energy security and supporting the construction of a new power system in China [5].