全省首个变电站内储能项目投运， “虚拟发电机”为高温供电上“保险”

Core Insights - The first grid-type energy storage project built within a substation in Hubei Province has successfully commenced operation, capable of outputting up to 20,000 kWh to the main grid during peak electricity usage, effectively alleviating load pressure on electrical equipment and ensuring reliable power supply during high-temperature periods [1][7]. Group 1: Project Overview - The energy storage project at the 110 kV Bao'an Substation has a total capacity of 10,000 kVA and can output a maximum of 20,000 kWh to the main grid, supporting 10% of the load of the substation's main transformer during peak times [7]. - The project consists of four energy storage battery units, inverters, and a storage control room, all housed within approximately 500 square meters of the substation [4][7]. Group 2: Operational Mechanism - Unlike traditional energy storage systems that passively receive instructions, the grid-type energy storage system acts as a "virtual generator," using power electronics and control algorithms to simulate synchronous generator characteristics, thus actively participating in grid regulation [4]. - The energy storage system charges during low load periods and discharges during peak times, seamlessly integrating with the main grid to reduce load pressure on the substation's main transformer [8]. Group 3: Implementation Challenges and Achievements - The project faced various challenges, including tight construction timelines, adverse weather conditions, and difficulties in equipment transportation, but the company employed strategies such as pre-set foundations and cross-operation to ensure timely operation [8]. - As of July 22, the energy storage project has completed four safe charge and discharge cycles, delivering a total of 80,000 kWh, significantly enhancing reliable power supply during peak load periods [8].