The Transformer Short-circuit Test And the High Power Laboratory in China-the Past, Present, and Future

摘要

53 sets 110 220KV transformers from 44 enterprises (No. 30 60kV system in northeast network is the same class as 110kV in other part of China) passed short-circuit test. The rate of qualified 110kV transformers was approximate 100% (in the first tune). If Transformer Works need to pass the short-circuit test, usually it can be done by themselves. Otherwise, STI (R&D department) can provide help. 40 transformers that passed the test were delivered to customers and they are in operation in the power system all over China. The remaining 13 sets are in the process of assembly and delivery. Feedback from clients suggests that all these transformers function well. They have been operating from a few months to more than five years. Report from State Electric Company indicates that there is no fault in system for 40 enterprise's new products (the same type series produced after special short-circuit test). This fact suggests that China's transformer manufacturing and testing has improved and become more reliable than before and HST contributes significantly to Chinese transformer industry.