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电网购电边际成本最低是电力市场追寻的目标。采用等报价分配电网间各运行机组的发电功率可使电网边际成本COM最低 ,因此 ,等报价法在发电厂上网报价中具有很重要的作用。等报价的计算方法有线性方程组法、牛顿内插法、牛顿外插法、合成曲线法、夹板二分法。这些方法都有各自的局限性 ,而等报价的抛物线法计算简单 ,可操作性较强 ,收敛较快。通过将抛物线法与上述 5种方法比较后得出 :抛物线法在电厂供电上网等报价中是较好的一种方法。
The lowest marginal cost of power grid purchases is the goal pursued by the power market. The use of such quotations to distribute power generated by each operating unit between the grids can make the marginal cost of the grid COM the lowest. Therefore, the equal price method plays an important role in the online quotation of power plants. The methods for calculating such quotations are linear equation group method, Newton interpolation method, Newton extrapolation method, compound curve method and splint dichotomy method. Each of these methods has its own limitations, and the parabolic method such as quoting has simple calculation, strong operability, and rapid convergence. By comparing the parabola method with the above five methods, the parabola method is a better method for quoting power grids and other power supplies.