T/CES 237-2023 Active Group standards

T/CES 237-2023 Method for Evaluating the Status of Modular Multi-Level Converters in Flexible DC Transmission Converter Stations

T/CES 237-2023

Publish Date: 2023-10-19 Implement Date: 2023-10-20 For services related to genuine standard inquiry, procurement, translation, and other related services in China, please Contact Us

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Basic Information

Standard Code: T/CES 237-2023

Standard Type: Group standards

Standard Status: Active

is_force_gb: no

CCS Name: -

ICS Name: Rectifiers, converters, and regulated power supplies

Publish Date: 2023-10-19

Implement Date: 2023-10-20

Scope

Scope: This standard specifies the technical requirements for the state evaluation method of insulated gate bipolar transistors (IGBTs) and DC support capacitors in the sub-modules of modular multilevel converters (MMC) of flexible DC transmission converter stations. This standard applies to the state evaluation of sub-modules of modular multilevel converters (MMC) of flexible DC transmission converter stations composed of half-bridge sub-modules and full-bridge sub-modules; Main technical content: With the development of new energy, flexible DC transmission technology has been widely applied. At present, there are no standards for the state evaluation method of sub-modules of modular multilevel converters (MMC) of flexible DC transmission converter stations in foreign countries. Existing standards only stipulate system tests, routine tests, factory tests, and handover tests, without providing feasible solutions and clear requirements for monitoring technology. There are no standards for the state evaluation method of sub-modules of modular multilevel converters (MMC) of flexible DC transmission converter stations in China. The existing standard DLT1833-2018 "Maintenance Procedures for Flexible DC Converters" stipulates the maintenance strategy, maintenance conditions, and maintenance item requirements for flexible DC transmission converters, but does not provide specific state evaluation methods for sub-modules of modular multilevel converters (MMC) of flexible DC transmission converter stations. Therefore, it is urgent to formulate a standard for the state evaluation method of sub-modules of modular multilevel converters (MMC) of flexible DC transmission converter stations to ensure the reliable operation of MMC-HVDC systems.