Understanding and Implementing the ANSI/NETA ECS-2015 Standard for Electrical Commissioning Specifications

摘要

One of the more common problems found during energization or system loading, is the misoperation of differential protection. If the equipment was only acceptance tested and the components tested individually without looking at the protection system as a whole, it would be easy to miss a design error or setting error especially on more complex protection schemes. This can be easily avoided with proper commissioning. Simple primary injection tests of differential protection circuits will verify correct connection and settings of the protection scheme. By defining the commissioning process, the NETA ECS will help guide the owner and the commissioning team to work together to develop the OPR, BOD, and commissioning plan. It is important to note the commissioning work starts early in the project and continues throughout the project. Fundamental documents such as the OPR and BOD, are valuable tools that should be the focus of commissioning tests.