Firstly, as the incremental rate of fuel-cost curve might benon-monotonically increasing, a weighted least-square method is proposed to smooth thecurve.

• 首先,确定机组煤耗特性曲线,针对由于煤耗曲线可能出现微增率曲线非单调上升的现象,提出了用加权等式约束的最小二乘法建立机组煤耗特性曲线的方法。