T/CPSS 1002-2022 The debugging procedures for a direct-current distributed power flow controller system

Scope

Scope: This document specifies the system commissioning conditions, projects, methods, and requirements for direct-series distributed current flow controllers. This document is applicable to direct-series distributed current flow controllers in power grids with voltages of 220 kV and below. Other types of distributed current flow controllers may be referenced for implementation. Main technical content: A distributed current flow controller (DPFC) is a new type of flexible current flow control device based on high-power power electronics technology. It can be installed in a distributed manner within substations or on line-tension towers, enabling optimized control of target current flow sections, fully utilizing line corridor resources, solving over-limit section issues, enhancing the grid structure and carrying capacity of the system, and improving the resilience of regional power grids against faults and risks. Combined with its inherent characteristics of low cost, high reliability, small footprint, and scalability, DPFC represents another development direction for future flexible AC transmission (FACTS) technology and holds broad prospects for promotion and application. With the increasing deployment of DPFC, conducting comprehensive assessments of the functions and performance of DPFC main equipment and systems during project system commissioning is crucial for ensuring reliable project operation and safe and stable system performance. Currently, there are no standards for DPFC project system commissioning either domestically or internationally. This document standardizes the projects and methods for DPFC project system commissioning, enhancing the comprehensiveness and accuracy of commissioning to ensure the safe and reliable operation of DPFC.

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