T/CPSS 1004-2022 Guidelines for Risk Assessment of Voltage Sudden Loss for Users Connecting to the Power Grid

Scope

Scope: This document specifies the risk assessment process for voltage sag-sensitive users (referred to as "sensitive users") accessing the 35kV distribution network, including the assessment process, assessment information, assessment methods, and the framework of the risk assessment report content. This document applies to new and expanded voltage sag-sensitive users accessing the 35kV distribution network. Existing sensitive industrial users or users of other types can refer to it for implementation. Main technical content: At present, there are no standards for risk assessment of voltage sag for sensitive users accessing the grid. The results of voltage tolerance tests for sensitive equipment and processes alone cannot replace the standards for risk assessment of voltage sag for sensitive users accessing the grid. Because power quality issues are a compatibility problem between the disturbance level in the power supply system and the tolerance of electrical equipment connected to the grid. Therefore, it is not only necessary to pay attention to the anti-disturbance ability of the connected equipment, but also to consider various factors such as the strength of the system at the actual connection point. In order to promote and popularize the assessment work of sensitive users accessing the distribution network, this technical standard is established to standardize the risk assessment of voltage sag for sensitive users accessing the grid, so as to improve the high-quality power consumption experience of high-end manufacturing users and assist the development of the "Made in China 2025" strategy. It has important engineering application value and practical guidance significance.

Development Information

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