发电技术 ›› 2025, Vol. 46 ›› Issue (4): 768-777.DOI: 10.12096/j.2096-4528.pgt.24062
高杉, 邢洁, 单英浩, 顾怡
收稿日期:
2024-06-09
修回日期:
2024-09-03
出版日期:
2025-08-31
发布日期:
2025-08-21
通讯作者:
邢洁
作者简介:
基金资助:
Shan GAO, Jie XING, Yinghao SHAN, Yi GU
Received:
2024-06-09
Revised:
2024-09-03
Published:
2025-08-31
Online:
2025-08-21
Contact:
Jie XING
Supported by:
摘要:
目的 考虑单相分布式光伏接入配电网后的影响,针对低压配电台区三相不平衡问题,提出了一种考虑柔性负荷响应协同光伏调节的低压配电台区三相不平衡治理方法。 方法 所提治理方法包含柔性负荷响应模式和光伏调节模式,其中柔性负荷响应模式以网损和负荷调节成本最小为优化目标,光伏调节模式以光伏换相次数最少为优化目标。采用不同编码策略的粒子群算法对这2种调节模式分别进行求解。最后,以华北地区某实际低压配电台区为例对所提方法进行了验证。 结果 该方法降低了光伏换相动作次数和负荷响应的调节成本。此外,通过分析权重系数对目标函数的影响,给出了权重系数的建议范围。 结论 该方法能有效治理三相不平衡越限,并减少治理成本。
中图分类号:
高杉, 邢洁, 单英浩, 顾怡. 考虑光伏换相与柔性负荷协同的配电网三相不平衡研究[J]. 发电技术, 2025, 46(4): 768-777.
Shan GAO, Jie XING, Yinghao SHAN, Yi GU. Research on Three-Phase Imbalance in Distribution Networks Considering Coordinated Photovoltaic Phase Switching and Flexible Load[J]. Power Generation Technology, 2025, 46(4): 768-777.
类型 | 治理方法 | 不平衡越限 | 不平衡度达标率/% | 网损/(kW⋅h) | 负荷调节成本/元 | 换相开关动作次数 |
---|---|---|---|---|---|---|
晴天 | 初始状态 | 是 | 16.67 | 18.67 | — | — |
负荷响应模式 | 是 | 70.83 | 17.34 | 15.17 | — | |
光伏调节模式 | 是 | 66.67 | 18.26 | — | 5 | |
联合调节模式 | 否 | 100 | 17.52 | 6.96 | 1 | |
阴天 | 初始状态 | 是 | 16.67 | 19.44 | — | — |
负荷响应模式 | 是 | 70.83 | 18.10 | 15.21 | — | |
光伏调节模式 | 是 | 33.33 | 17.27 | — | 6 | |
联合调节模式 | 否 | 100 | 18.36 | 10.01 | 1 |
表1 不同天气下各种模式治理效果
Tab. 1 Mitigation performance of different modes under different weather conditions
类型 | 治理方法 | 不平衡越限 | 不平衡度达标率/% | 网损/(kW⋅h) | 负荷调节成本/元 | 换相开关动作次数 |
---|---|---|---|---|---|---|
晴天 | 初始状态 | 是 | 16.67 | 18.67 | — | — |
负荷响应模式 | 是 | 70.83 | 17.34 | 15.17 | — | |
光伏调节模式 | 是 | 66.67 | 18.26 | — | 5 | |
联合调节模式 | 否 | 100 | 17.52 | 6.96 | 1 | |
阴天 | 初始状态 | 是 | 16.67 | 19.44 | — | — |
负荷响应模式 | 是 | 70.83 | 18.10 | 15.21 | — | |
光伏调节模式 | 是 | 33.33 | 17.27 | — | 6 | |
联合调节模式 | 否 | 100 | 18.36 | 10.01 | 1 |
类型 | 柔性负荷响应模型 | 不平衡度达标率/% | 不平衡度平均值/% | 不平衡度最大越限值 | 网损/(kW⋅h) | 柔性负荷调节成本/元 |
---|---|---|---|---|---|---|
晴天 | 初始状态 | 16.67 | 32.74 | 53.95 | 18.67 | — |
w1=0.9 | 70.83 | 25.88 | 46.79 | 15.47 | 38.28 | |
w1=0.7 | 70.83 | 28.76 | 48.44 | 17.17 | 17.47 | |
w1=0.5 | 70.83 | 29.13 | 49.35 | 17.34 | 15.17 | |
w1=0.3 | 70.83 | 29.44 | 51.71 | 17.47 | 13.20 | |
w1=0.1 | 66.67 | 30.12 | 52.47 | 17.54 | 13.16 | |
阴天 | 初始状态 | 16.67 | 30.73 | 46.95 | 19.44 | — |
w1=0.9 | 70.83 | 23.93 | 41.32 | 16.19 | 37.24 | |
w1=0.7 | 70.83 | 26.84 | 42.81 | 17.84 | 17.95 | |
w1=0.5 | 70.83 | 27.05 | 43.16 | 18.10 | 15.21 | |
w1=0.3 | 70.83 | 27.62 | 44.63 | 18.22 | 14.13 | |
w1=0.1 | 66.67 | 28.05 | 45.91 | 18.36 | 12.01 |
表2 不同权重下的结果
Tab. 2 Results under different weights
类型 | 柔性负荷响应模型 | 不平衡度达标率/% | 不平衡度平均值/% | 不平衡度最大越限值 | 网损/(kW⋅h) | 柔性负荷调节成本/元 |
---|---|---|---|---|---|---|
晴天 | 初始状态 | 16.67 | 32.74 | 53.95 | 18.67 | — |
w1=0.9 | 70.83 | 25.88 | 46.79 | 15.47 | 38.28 | |
w1=0.7 | 70.83 | 28.76 | 48.44 | 17.17 | 17.47 | |
w1=0.5 | 70.83 | 29.13 | 49.35 | 17.34 | 15.17 | |
w1=0.3 | 70.83 | 29.44 | 51.71 | 17.47 | 13.20 | |
w1=0.1 | 66.67 | 30.12 | 52.47 | 17.54 | 13.16 | |
阴天 | 初始状态 | 16.67 | 30.73 | 46.95 | 19.44 | — |
w1=0.9 | 70.83 | 23.93 | 41.32 | 16.19 | 37.24 | |
w1=0.7 | 70.83 | 26.84 | 42.81 | 17.84 | 17.95 | |
w1=0.5 | 70.83 | 27.05 | 43.16 | 18.10 | 15.21 | |
w1=0.3 | 70.83 | 27.62 | 44.63 | 18.22 | 14.13 | |
w1=0.1 | 66.67 | 28.05 | 45.91 | 18.36 | 12.01 |
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