计及接纳风电能力的电网调度模型

Power System Dispatch Considering Wind Power Grid Integration

当电网接入一定规模的风电时,为追求风电高效利用会使电网调度更加复杂。针对风电接入电网时调度面临煤耗量与风电高效利用之间的矛盾问题,将风电能够为电网节约的煤耗量作为风电价值的量度,构建计及接纳风电能力的电网调度决策模型,以确定风电允许的波动范围,使调度中的煤耗量和电网接纳风电的能力得到有效协调。通过烟台电网算例验证说明,该方法对计及不确定型可再生电源的电网调度是有效的,符合节能发电调度的理念。

As wind power capacity in a power grid reaches a certain level, the system dispatch becomes more complex for efficient utilization of wind power. In a power grid with wind farms connected, there is a contradiction between fuel cost and effective utilization of wind power in the scheduling process. The fuel cost saved by the wind power is taken as the measurement for the value of wind power. A scheduling method considering wind power integration is proposed so that a fluctuation range can be calculated to coordinate the fuel cost and wind power grid connection. Case study in the Yantai power grid shows that the method proposed is appropriate for the power grid scheduling in accordance with the principle of economic generation dispatch.