Using GM(1,1) model to predict short-period load has good accuracy, but to the high waving peak load, its accuracy is low.

• 用GM(1,1)模型预测短期负荷虽具有很好的精确性,但对于波动性较大的高峰负荷,它的预测精度比较低,而马尔可夫模型可以克服负荷波动较大的局限性。