T/CES 016-2018 Low-voltage distribution network power electronic compensation device technical specification

Scope

Scope: This standard specifies the terms and definitions, technical requirements, test methods, inspection rules, marking, packaging, transportation, and storage requirements for power electronic compensation devices in low-voltage distribution networks. This standard applies to 50 Hz, rated working voltage of 400 V low-voltage distribution systems, and is used for balancing three-phase active power in distribution networks. It also includes devices with fundamental wave reactive power compensation and harmonic compensation functions, hereinafter referred to as "devices". Main technical content: The structure of low-voltage grids is complex, and long-distance single-phase power supply situations are very common, making it difficult to evenly and equidistantly connect all users' loads to three-phase lines. At the same time, with the continuous improvement of people's living standards, the use of high-power household appliances is becoming more frequent, and single-phase user loads have uncontrollable and non-synchronous power consumption characteristics, resulting in serious three-phase load imbalance problems. Therefore, it is necessary to actively adopt new technologies and equipment such as dynamic compensation and smooth adjustment, and selectively implement three-phase load imbalance management in low-voltage grids based on local conditions. Based on the above, many manufacturers have developed devices with different functions, such as active power balance devices for distribution networks, but their functions and quality vary greatly. To standardize the application of such devices in power grids, especially in current low-voltage distribution areas, this standard "Technical Specifications for Active Power Balance Devices in Distribution Networks" has been developed. In accordance with the technical principles of the new round of rural power grid transformation and upgrading and the notice from the Operation and Inspection Department of State Grid on the manag

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