IEEE Guide for Technical Requirements for Hybrid High-Voltage Direct Current Transmission Protection and Control Equipment

General requirements, functional and technical performance requirements, test requirements, labeling requirements, packaging, transportation and storage requirements, supply integrity requirements, and quality assurance requirements for hybrid high-voltage direct current (HVDC) transmission control and protection equipment are provided in this guide. This guide could be applied to the control and protection equipment of parallel two-terminal or multiterminal hybrid dc transmission system with a dc voltage level of ±110 kV and above, including line-commutated converter (LCC) and voltage-source converter (VSC).