An Investigation of Trend Filter Based Collaborative Piecewise Linearization Method for Transient Curve

In nuclear power plants,both the calculated design transient and monitored real transient are constructed by massive data.Due to the high computational cost,the raw transient data can not be used for fatigue analysis directly.Therefore,how to piecewise linearize the raw data is a key issue for fatigue analysis.A trend filter based collaborative piecewise linearization method for transient curve is proposed in the present work.An assumed reference transient and a real monitored transient are used to verify the present method.The results show that the present method can linearize the real transient curve accurately and efficiently.