Economic Analysis of Main Transformer Parallel Operation in Suzhou Power System

Aimed at common parallel operation modes of 220 kv main transformers in Suzhou power system,the paper carries on active loss calculation,critical paralleling point calculation and economic analysis,and gives the criterion of economic operation,and proposes operation methods of main transformers at the different load of peak load and flat load and low load,by referring to actual load curves,and provides reference to economic operation mode of transformers for the dispatchers.