T/CES 194-2023 Microgrid Emission Accounting Standards

Scope

Scope: This document specifies the accounting steps and methods for carbon emissions of microgrids. This document applies to the accounting of carbon emissions under the operating conditions of microgrids with a voltage level of 35kV and below, and does not include the processes of their new construction, renovation, expansion, and maintenance. Main technical content: This document specifies the accounting steps and methods for carbon emissions of microgrids. (1) Basic provisions mainly include the basic principles of standard preparation and the scope of standard accounting. The preparation principles include the accounting cycle, the selection of grid carbon emission factors, and the handling of emergency power supplies, etc. The scope of accounting includes carbon dioxide emissions from the combustion of fossil fuels, carbon dioxide emissions from the purchased electricity of microgrids, and carbon dioxide emissions reduced by carbon capture and storage. (2) Accounting methods and accounting boundaries mainly include the accounting methods and accounting boundaries applied in the process of carbon emission accounting of microgrids. The accounting subject of carbon emissions takes the grid-connected point of the microgrid connected to the grid as the boundary. The main entities within this boundary include the production part, the transmission part, the users, and the auxiliary control part (excluding heat and cold, only counting the carbon emissions of electricity-related fuels). Among them, the production part mainly refers to distributed power sources, the transmission part mainly refers to the grid network, and the auxiliary control part includes monitoring, protection, and automation devices, as well as energy storage devices, etc. (3) Carbon emission calculation mainly includes the carbon emission calculation of distributed power sources and the grid network of microgrids, as well as the carbon capture and storage within the scope of accounting. At the same

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