Grid-Forming Energy Storage EPC General Contracting Project Practice Sharing

This document presents a comprehensive practice sharing on Grid-Forming Energy Storage EPC General Contracting Projects, authored by the Eleventh Design & Research Institute of Information Industry, Science & Technology Engineering Co., Ltd. It covers policy direction, design schemes, equipment selection, construction management, and operation & maintenance assurance. The background highlights China's shift from traditional synchronous power grids to 'dual high' systems with high renewable energy and power electronic equipment, causing issues like low inertia and voltage instability. Grid-forming energy storage, which adds control strategies for frequency and voltage regulation akin to synchronous generators, is proposed as a solution. The document reviews national and Xinjiang policies, industry performance, and pain points. It details technical routes, system schemes, fire protection, battery and PCS selection, EMS with AI empowerment, and project planning. Key challenges include AC/DC side contradictions and bid differentiation. The practice aims to enhance grid stability and support large-scale new energy integration.