Peak shaving operation of hydro-thermal-nuclear plants serving multiple power grids by linear programming
Peak shaving operation of hydro-thermal-nuclear plants serving multiple power grids by linear programming
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DOI：
10.1016/j.energy.2017.06.097
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发表时间：
2017-09
期刊：
影响因子：
9
通讯作者：
Zhong-kai Feng;Wen-jing Niu;Chun-tian Cheng;Jian-zhong Zhou
中科院分区：
文献类型：
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作者：
Zhong-kai Feng;Wen-jing Niu;Chun-tian Cheng;Jian-zhong Zhou
近年来，随着经济的快速发展，中国的高峰负荷需求正处于一个繁荣期。华东电网是世界上负荷最大的区域性电网，负责同时协调本区电厂向下属几个省级电网发电。然而，由于电力结构不合理，缺乏灵活的能源来快速响应多个电网的峰值负荷，这给中国大多数区域电网的调度中心带来了新的现实挑战。因此，为了满足中国调峰运行的实际需求，本文提出了一种新颖的线性规划优化模型，在满足一组复杂约束条件的情况下，找出最优的每小时电量分配方案。在该模型中，通过将各电网的原始负荷减去总分配发电量，使剩余负荷序列的峰谷差之和最小。利用该模型求解了ECPG中14座多网水热核机组的日尖峰运行问题。不同算例的结果表明，与目前工程中使用的方法相比，所提出的模型能够为各电网提供更平滑的剩余负荷序列。因此，该方法可以为中国多个互联电网服务的电厂大规模发电分配提供科学的决策支持。
With the rapid economic development in recent years, the peak load demands of China are experiencing a booming period. As a regional power grid with the maximum electrical load in the world, the East China Power Grid (ECPG) is in charge of coordinating simultaneously the power generation of its own power plants to several subordinate provincial power grids. However, due to unreasonable power structure, there is a lack of flexible energy to quickly respond the peak loads of multiple power grids, which has brought a new real challenge for the dispatching center of most regional power grids in China. Hence, to meet the practical requirement of peak shaving operation in China, a novel linear programming optimization model is proposed in this paper to find out the optimal quarter-hourly generation allocation plan while satisfying a group of complex constraints. In this model, the objective is to minimize the summation of peak-valley difference of the residual load series by subtracting the total allocated generation from the original load of each power grid. This model is used to solve the day-head peak operation of 14 hydro-thermal-nuclear plants serving multiple power grids in ECPG. The results from different cases show that compared with the current method used in practical engineering, the proposed model is capable of providing results with smoother remaining load series for each power grid. Thus, this method proves to be effective technique to provide scientific decision support for large-scale generation allocation of plants serving multiple interconnected power grids in China.