The blooming HVDC links has caused a serious frequency problem for the multi-infeed grid.To make full use of the interruptible load,reduce the risk of under-frequency load shedding and the risk of triggering a serious accident,an interruptible load shedding scheme according to the frequency and the value setting method is proposed.An equivalent model is adopted for the interruptible load shedding study considering the load frequency characteristics.The reasonable frequency setting values and load shedding percentage are analyzed.The completed scheme is checked by the detailed grid model.The simulation results show that the proposed scheme is effective.In case of large power loss which may cause the under-frequency load shedding,the scheme can remove the interruptible load.As a result,the risk of under-frequency load shedding is reduced and the frequency stability of the grid is improved.