混合电源系统接纳风电能力的一种新算法

A New Algorithm for the Acceptance Capacity of Wind Power in Hybrid Power System

从某典型水电厂日发电量方块图入手,叙述了常规电源为风电调峰的机理,通过梳理相应依存关系,分析和比较后选用考虑水电电量的计算方法,关键是增加了对风电出力的随机性和波动性的考虑。在考虑水电电量的基础上,对原有电量模型和计算方法进行完善和改进,给出一个适合电网运行、计算简便、数据准确的风电接纳能力计算方法的步骤及逻辑框图。新算法利用大型水电厂的调节能力,平滑原本随机的风电出力,使风电与水电出力之和保持基本稳定。在考虑水电电量的基础上,先算出水电可平衡的风电出力,再确定火电可平衡的风电出力,以此确定混合电源系统可接纳风电能力。

Starting from a typical diagram of a hydropower daily electricity, described the mechanism of peak regulation of wind farms by conventional power. By combing the corresponding dependency relations, selected the method considering the hydropower electricity after analyzing and comparing. The key is to consider the randomness and volatility of wind power additionally. On the basis of considering hydropower electricity, refined and improved the original model, then gave the steps and logic diagrams of a new algorithm for the ac ceptance capacity of wind power. The algorithm is simple for calculation and suits the grid operation well. It u ses the ability of large hydropower reservoirs to regulate the random output of wind power, then form a relatively stable output to realize the coordination of wind power and hydropower. Based on considering the hydro-power electricity to calculate the acceptance capacity of wind power that can be balanced by hydropower, then calculate the acceptance capacity of wind power that can be balanced by thermal power, in order to determine the acceptance capacity of wind power in hybrid power system.