在电网调度规划中，减少水电站因电力系统调峰容量不足而产生的调峰弃水电量,不但符合当下国家发展节能发电调度、环保、降耗的趋势，而且能够更加合理、有效地利用有限的能源资源。文章通过区别水、火电站在电力电量平衡计算中其工作容量调峰能力的差异，利用平衡关系定性分析水、火电站间不同备用容量配置与电力系统总调峰容量的变化规律，建立相应的调峰弃水电量最小的备用容量优化配置模型。基于等备用原则和启发式搜索得到初始解，并利用水、火电站调峰能力的差异和步长加速法对模型进行求解。算例结果分析验证本文所提出的调峰弃水电量最小的备用容量优化配置模型及其求解思路的正确性、可行性和有效性。
Abstract
To reduce the peaking abandoned hydropower of hydropower station for the power system being lack of peak-shaving capacity in grid dispatching planning, not only in line with the current national development of energy-saving power generation dispatching, environmental protection, consumption trends, and more reasonable and effective use of limited water resources. In this paper, the difference of peak shaving capability of hydropower and thermal power stations is analyzed in the balance of electric power and energy, By using the equilibrium relation, the variation law between the reserve capacity allocation and the total peak shaving capacity of the power system is qualitatively analyzed, and establish the corresponding the minimum of peaking abandoned hydropower for the optimization of reserve capacity model. Put forward the reserve principle to obtain initial solution based on the idea to solve the model and the use of water power station, peaking capacity difference and step acceleration method. Propose a solving idea based on getting initial solution from the principle of equivalent reserve capacity, and the peak-shaving capacity difference between hydropower and thermal power stations, and step acceleration method. The correctness, feasibility and effectiveness for the results of the minimum of peaking abandoned hydropower for the optimization of reserve capacity model and the solving idea are verified by numerical examples.
关键词
调峰弃水电量 /
备用容量 /
电力电量平衡 /
等备用原则 /
启发式搜索
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Key words
peaking abandoned hydropower /
power balance calculation /
reserve capacity /
step acceleration method /
heuristic search
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