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Analysis and Treatment of Stator Coil Contamination Accident of Large Condenser

As an important reactive power compensation device for UHV DC systems, large condensers played a vital role in the safety and stable operation of the power grid. It is common for DC receivers to use dual internal water cooling models, and the water quality requirements for large condenser are also quite strict. During the operation of a domestic adjustment condenser, the flow rate of the stator coil was significantly reduced, and the pressure difference between the inlet and outlet water showed an increasing trend. The way of positive and negative washing during operation and maintenance made the problem significantly improved and solved the problem of stator coil contamination.