水火发电系统随机生产模拟的两阶段定区间等效电量函数法

发布时间：2018-01-08 21:26

本文关键词：水火发电系统随机生产模拟的两阶段定区间等效电量函数法　出处：《电力自动化设备》2017年11期 　论文类型：期刊论文

【摘要】：针对等效电量函数有效区间在随机生产模拟过程中不断变化的性质,通过平移变换得到了固定的有效区间,提高了计算效率。基于等效电量函数法误差来源的分析,提出了两阶段定区间等效电量函数法。第一阶段进行水火电带负荷位置的协调优化,根据系统负荷及各机组容量的"最大公因子"确定尽可能大的模拟间隔,以在不损失精度要求的前提下提高计算效率;第二阶段仅对存在空闲容量的水电厂进行模拟,采用较小的间隔以提高失负荷概率(LOLP)指标的计算精度。采用IEEE-RTS 79修正及扩大系统的仿真分析表明,相比于传统的等效电量函数法,所提方法在相同的精度要求下具有更高的计算效率,特别适用于对LOLP指标精度要求较高的场合。
[Abstract]:In view of the constant change of the effective interval of the equivalent electricity function in the process of stochastic production simulation, the fixed effective interval is obtained by the translation transformation. Based on the analysis of the error source of the equivalent electricity function method, a two-stage fixed interval equivalent electricity function method is proposed. In the first stage, the coordinated optimization of the location of the hydro-electric power belt load is carried out. According to the "maximum common factor" of the system load and the capacity of each unit, the maximum simulation interval is determined, so as to improve the calculation efficiency without losing the precision requirement. In the second stage, only hydropower plants with idle capacity are simulated. A small interval is adopted to improve the calculation accuracy of the LOLP index. The IEEE-RTS 79 is used to modify and expand the simulation analysis of the system. Compared with the traditional equivalent power function method, the proposed method has higher computational efficiency under the same precision requirement, especially for the situation where the precision of LOLP index is high.
【作者单位】：国网安徽省电力公司电力调度控制中心;广西电网公司电力调度控制中心;浙江大学电气工程学院;
【基金】：国家自然科学基金资助项目(51537010)~~
【分类号】：TM743
【正文快照】： 0引言电力系统随机生产模拟是指通过优化发电机组的生产情况,考虑机组的随机故障及电力负荷的随机性,从而计算出最优运行方式下各机组的发电量、系统的生产成本及系统的可靠性指标[1-4]。目前国内外专家学者已经提出了多种随机生产模拟算法,广泛应用在电力系统电源规划、运行

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