High Voltage Cascade Energy Storage Converter Standard

This standard specifies functional requirements for high voltage cascade energy storage converters, including start-stop, power control, alarm and protection, insulation resistance detection, communication, operating information monitoring, statistics, data display and storage, as well as electrical and safety performance. It covers normal working conditions, appearance and protection level, electromagnetic compatibility, auxiliary systems, inspection rules, marking, packaging, transportation, and storage. The standard applies to grid-connected high-voltage cascade storage converters with electrochemical cells as energy storage carriers and AC port voltages of 6kV, 10kV, and 35kV. Key environmental conditions include temperature range -20℃ to +40℃, relative humidity below 95%, and compliance with altitude and marine climate requirements. Grid-connected electrical conditions must meet harmonic, voltage deviation, fluctuation, unbalance, and frequency deviation limits. Appearance requirements include structural integrity, flexible cabinet operation, and clear markings. Protection levels are IP20 for indoor and IP54 for outdoor converters. Basic functions encompass start-stop control, continuous active and reactive power regulation, fault diagnosis with alarm, insulation resistance detection, and communication capabilities.