Introduction  Due to the intermittent, random and anti-peaking characteristics of wind power output, large-scale renewable energy wind power grid integration has made serious problem of wind power curtailment in winter heating period within Beijing-Tianjin-Tangshan region.

  Method  To make quantitative research of the influence on wind power curtailment when power-peaking, tie-line delivery changes and accurately measure the accommodation capacity of wind power under different scenarios, the wind power curtailment evaluation method is established from the perspective of system peak-load regulation and subject to the balance of electric load, heating load and generator output constraints.

  Result  The results show that the deeper depth of conventional peak-load regulation and the smaller depth of outside system delivery is, the large space of wind power accommodation capacity is accepted; while rapid growth of wind power installed capacity and higher rate of thermal power unit heating will inhibit wind power output, resulting in wind power curtailment.

  Conclusion  So the ability of wind power accommodation capacity can be improved by activating the system peak-load regulation, controlling the liaison lines peak-to-valley difference and reduce the output range of the thermal power unit. While selecting a certain proportion of wind power installed capacity growth rate can control the amount of wind power to be rejected within a certain level.