| 引用本文: | 牛焕娜,钱立,杨璐,王坤.计及灵活性辅助服务费用的配电网灵活型资源优化配置[J].电力自动化设备,2021,41(10): |
| NIU Huanna,QIAN Li,YANG Lu,WANG Kun.Optimal allocation of flexible resources in distribution network considering cost of flexible auxiliary services[J].Electric Power Automation Equipment,2021,41(10): |
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| 摘要: |
| 针对高渗透率可再生能源配电网短时间大幅功率波动造成的灵活性调节能力不足问题，为了减少配电网对上级电网灵活性供给的依赖，提出了计及上级电网灵活性辅助服务费用的灵活型资源优化配置方法。定义了表征配电网灵活性水平的关口功率波动程度评价指标，基于Copula理论制定了配电网灵活性评估方法，给出了基于节点功率对关口功率波动影响指标排序的灵活型资源安装位置选择方法；进而面向未来电力市场场景，基于配电网对上级电网灵活性需求和上级电网灵活性供给能力之间的平衡博弈，结合各类型灵活型资源设备灵活性供给约束，构建了计及上级电网灵活性辅助服务费用的灵活型资源优化配置模型。配电网算例仿真结果表明，所提出的灵活型资源配置方法能够有效降低配电网年总运行费用，提高可再生能源消纳量和系统供电可靠性，削弱关口功率波动程度，从而减轻可再生能源和随机性负荷波动对上级电网造成的冲击影响。 |
| 关键词: 配电网 灵活性评估 灵活型资源 辅助服务费用 优化配置 |
| DOI：10.16081/j.epae.202110039 |
| 分类号:TM74 |
| 基金项目:广西电网公司科技项目(GXKJXM20190612) |
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| Optimal allocation of flexible resources in distribution network considering cost of flexible auxiliary services |
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NIU Huanna1, QIAN Li1, YANG Lu1,2, WANG Kun3
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1.College of Information and Electrical Engineering, China Agricultural University, Beijing 100083, China;2.School of Electric Power, Civil Engineering and Architecture, Shanxi University, Taiyuan 030006, China;3.State Grid Zhejiang Electric Power Economy Research Institute, Hangzhou 310008, China
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| Abstract: |
| Aiming at the problem of insufficient flexible adjustment capacity of distribution network caused by large power fluctuation of high-permeability renewable energy in a short time, in order to reduce the dependence of the distribution network on the flexible supply provide by the upper-level power grid, a flexible resource optimal allocation method is proposed, which takes into account the flexibility auxiliary service fees of the upper-level power grid. The evaluation index of gate power fluctuation degree is defined, which represents the flexibility level of distribution network. Based on the Copula theory, the evaluation method of distribution network flexibility is formulated, and the installation location selection method of flexible resources is proposed based on the ranking index of influence of node power on gate power fluctuation. For the future power market scenarios, based on the balance game between the distribution network’s flexible demand for the upper-level power grid and the flexible supply capacity of the upper-level power grid, and combined with the flexible supply constraints of various types of flexible resource equipment, a flexible resource optimal allocation model including the flexibility auxiliary service fees of the upper-level power grid is constructed. Distribution network example simulative results show that the proposed flexible resource allocation method can effectively reduce the total annual operating cost of distribution network, improve the consumption of renewable energy and the power supply reliability of the distribution network system, weaken the degree of gate power fluctuation, so as to reduce the impact of renewable energy and random load fluctuation on the upper-level power grid. |
| Key words: distribution network flexibility assessment flexible resources auxiliary service fees optimal allocation |
