发电技术 ›› 2024, Vol. 45 ›› Issue (3): 423-433.DOI: 10.12096/j.2096-4528.pgt.23084
赵斌1, 梁告1, 姜孟浩2, 邹港1, 王力1
收稿日期:
2023-12-10
修回日期:
2024-01-20
出版日期:
2024-06-30
发布日期:
2024-07-01
作者简介:
基金资助:
Bin ZHAO1, Gao LIANG1, Menghao JIANG2, Gang ZOU1, Li WANG1
Received:
2023-12-10
Revised:
2024-01-20
Published:
2024-06-30
Online:
2024-07-01
Supported by:
摘要:
目的 电池储能是保证光伏发电系统可靠性、提高光伏发电利用率的有效手段之一,但在光储电站中存在功率波动平抑难、储能容量配置不合理等问题,为解决这些问题,开展了相关研究。 方法 针对能量型电池储能,分析了调度模式和自主模式特性,提出了一种基于储能运行在调度模式的光储系统限功率平抑策略,以实现功率平抑和减少储能充放电频繁切换。建立了以最小光储系统弃电损失为优化目标,以功率波动越限概率等作为约束条件的优化模型,并利用算法对储能配置进行求解和优化。以西藏朗明桑珠孜50 MW光储电站为例,验证了所提平抑策略的有效性。 结果 所提平抑策略在不增加储能充放电切换次数的前提下,将光储系统并网功率波动越限概率由25.64%降至6.41%,且并网功率波动越限概率为5%时,该50 MW并网光伏电站储能系统最优配置为14.5 MW/94 MW⋅h。 结论 所提抑策略及储能优化配置方法可为并网光储电站优化设计和运行提供技术参考。
中图分类号:
赵斌, 梁告, 姜孟浩, 邹港, 王力. 光储系统并网功率波动平抑及储能优化配置[J]. 发电技术, 2024, 45(3): 423-433.
Bin ZHAO, Gao LIANG, Menghao JIANG, Gang ZOU, Li WANG. Grid-Connected Power Fluctuation Suppression and Energy Storage Optimization Configuration of Photovoltaic-Energy Storage System[J]. Power Generation Technology, 2024, 45(3): 423-433.
储能功率配置/MW | 弃电量/(MW⋅h) | 波动越限概率/% | 最大波动量/MW |
---|---|---|---|
0 | 33.97 | 7.50 | 21.81 |
5.0 | 22.57 | 7.50 | 21.81 |
10.0 | 15.00 | 6.25 | 18.57 |
12.5 | 11.15 | 6.25 | 16.07 |
15.0 | 9.65 | 5.00 | 13.15 |
17.5 | 7.70 | 5.00 | 12.17 |
25.0 | 6.18 | 2.50 | 7.87 |
表1 配置不同功率时光储系统输出评价指标
Tab. 1 Output evaluation index of photovoltaic-energy storage system with different power configurations
储能功率配置/MW | 弃电量/(MW⋅h) | 波动越限概率/% | 最大波动量/MW |
---|---|---|---|
0 | 33.97 | 7.50 | 21.81 |
5.0 | 22.57 | 7.50 | 21.81 |
10.0 | 15.00 | 6.25 | 18.57 |
12.5 | 11.15 | 6.25 | 16.07 |
15.0 | 9.65 | 5.00 | 13.15 |
17.5 | 7.70 | 5.00 | 12.17 |
25.0 | 6.18 | 2.50 | 7.87 |
储能功率配置/MW | 储能最优容量配置/(MW⋅h) | 弃电量/(MW⋅h) |
---|---|---|
0 | 0 | 33.97 |
5.0 | 34.38 | 22.57 |
10.0 | 66.37 | 15.00 |
12.5 | 81.68 | 11.80 |
15.0 | 96.85 | 9.46 |
17.5 | 110.90 | 7.70 |
20.0 | 125.63 | 6.48 |
表2 不同功率配置时储能容量优化结果
Tab. 2 Optimization results of energy storage capacity with different power configurations
储能功率配置/MW | 储能最优容量配置/(MW⋅h) | 弃电量/(MW⋅h) |
---|---|---|
0 | 0 | 33.97 |
5.0 | 34.38 | 22.57 |
10.0 | 66.37 | 15.00 |
12.5 | 81.68 | 11.80 |
15.0 | 96.85 | 9.46 |
17.5 | 110.90 | 7.70 |
20.0 | 125.63 | 6.48 |
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