| 引用本文: | 黄弦超,封钰.考虑机组灵活性的独立微网日前日内协调优化调度[J].电力自动化设备,2020,40(4): |
| HUANG Xianchao,FENG Yu.Day-ahead and intra-day coordinated optimal scheduling of stand-alone microgrid considering unit flexibility[J].Electric Power Automation Equipment,2020,40(4): |
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| 摘要: |
| 作为高效利用分布式能源以及补充大电网灵活性的有效手段之一，微网的优化调度越来越受到重视。在全面考虑各类分布式资源调度灵活性的基础上，从日前和日内2个时间尺度出发，建立以总运行成本最小为目标的独立微网优化调度模型。日前调度计划为日内调度提供参考，必要时在日内调度中可调整满足灵活性要求的分布式资源的启停状态；日内调度采用滚动优化方式，并通过制定各类分布式资源的调整优先级，指导日内调度计划的优化调整。将蓄电池初始荷电状态作为优化变量，与分布式资源的调度计划同时进行优化，以进一步提高微网运营经济性。对该模型进行线性化处理，并调用CPLEX求解器求解该混合整数规划问题。算例分析结果验证了所提调度策略的合理性。 |
| 关键词: 独立微网 灵活性 经济调度 滚动优化 多时间尺度 混合整数规划 |
| DOI：10.16081/j.epae.202004007 |
| 分类号:TM727 |
| 基金项目:国家自然科学基金资助项目(51107037) |
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| Day-ahead and intra-day coordinated optimal scheduling of stand-alone microgrid considering unit flexibility |
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HUANG Xianchao, FENG Yu
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School of Electrical & Electronic Engineering, North China Electric Power University, Beijing 102206, China
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| Abstract: |
| As one of the effective means to effectively use distributed energy and supplement the flexibility of large power grid, the optimal scheduling of microgrid has received more and more attention. On the basis of comprehensive consideration of scheduling flexibility of various distributed resources, an optimal scheduling model of stand-alone microgrid is built from two time scales of day-ahead and intra-day, which takes the minimum total operation cost as its objective. The day-ahead scheduling provides reference for intra-day scheduling, and the start-stop state of the distributed resource that satisfying flexibility requirement can be adjusted in the intra-day scheduling if necessary. The rolling optimization mode is adopted in the intra-day scheduling, and the adjusting priority of various distributed resources is made to guide the optimal adjustment of intra-day scheduling. The initial state of charge of the storage battery is taken as the optimal variable, which is optimized together with the scheduling of the distributed resources to further improve the operation economy of microgrid. The model is linearized and CPLEX solver is applied to solve the mixed integer programming problem. The results of case analysis verify the rationality of the proposed scheduling strategy. |
| Key words: stand-alone microgrid flexibility economic scheduling rolling optimization multi-time scale mixed integer programming |
