| 引用本文: | 楼佩婕,边晓燕,崔勇,王小宇,林顺富,赵耀.计及辅助服务的微电网源荷协同调频优化控制策略[J].电力自动化设备,2022,42(1): |
| LOU Peijie,BIAN Xiaoyan,CUI Yong,WANG Xiaoyu,LIN Shunfu,ZHAO Yao.Optimal control strategy of source-load coordinated frequency regulation in microgrid considering ancillary service[J].Electric Power Automation Equipment,2022,42(1): |
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| 摘要: |
| 针对含高比例新能源微电网中调频资源缺乏且源荷参与调频意愿较低而导致的系统频率稳定性下降问题，通过辅助服务机制激励风电机组与可控负荷提供调频辅助服务，提出一种计及综合经济效益最优的源荷协同调频优化控制策略。该策略根据双馈异步风电机组调频、可控负荷一次调频、柴油机惯量调频以及一次调频计算提供辅助服务的效益和成本，综合考虑微电网的调频经济效益及调频效果，利用深度信念网络优化双馈异步风电机组的减载率、虚拟惯量、下垂控制及可控负荷的控制参数，实现双馈异步风电机组、可控负荷及柴油机多时间尺度的协同调频。通过搭建高比例新能源微电网模型仿真验证了源荷协同调频优化控制策略的有效性，使源荷提供辅助服务后能获得最优经济效益以及较好的调频效果，可有效挖掘源荷提供调频辅助服务的能力。 |
| 关键词: 高比例新能源 微电网 辅助服务 源荷协同控制 调频控制 经济效益 深度信念网络 |
| DOI：10.16081/j.epae.202109018 |
| 分类号:TM727;TM761 |
| 基金项目:国家自然科学基金资助项目(51977127)；上海市科学技术委员会资助项目(19020500800)；上海市教育发展基金会和上海市教育委员会“晨光计划”(17CG56) |
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| Optimal control strategy of source-load coordinated frequency regulation in microgrid considering ancillary service |
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LOU Peijie1, BIAN Xiaoyan1, CUI Yong2, WANG Xiaoyu1, LIN Shunfu1, ZHAO Yao1
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1.College of Electric Power Engineering, Shanghai University of Electric Power, Shanghai 200090, China;2.State Grid Shanghai Municipal Electric Power Company, Shanghai 200122, China
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| Abstract: |
| In a renewable-dominated microgrid, the shortage of frequency regulation resources and the low willingness of power sources and loads to participate in frequency regulation negatively impact the power system frequency stability. An optimal control strategy of source-load coordinated frequency regulation in microgrid is proposed, in which the optimal comprehensive economic benefits are considered, and wind turbines and controllable loads are motivated to provide frequency regulation ancillary services by the anciliary service mechanism. Additionally, the benefits and costs are calculated according to the anciliary service provided by frequency regulation of DFIG(Doubly-Fed Induction Generator),primary frequency regulation of controllable load and inertia frequency regulation and primary frequency regulation of diesel engine. The present work comprehensively considers economic benefits and frequency regulation effects of microgrid, the parameters of load shedding rate, virtual inertia, droop control of DFIG, and control parameters of controllable load are optimized by DBN(Deep Belief Network). Hence, the proposed model achieves coordinated frequency regulation of DFIG, controllable load and diesel engine between multiple time scales. The effectiveness of the proposed strategy is verified by an isolated microgrid model with high penetration of renewable energy. Simulative results demonstrate that this strategy provides economic operating decisions and positively improves the frequency regulation ability, and the potential capability of source-load coordination to provide anciliary services for frequency regulation is exploited. |
| Key words: high penetration of renewable energy microgrid anciliary service source-load coordinated control frequency regulation control economic benefit deep belief network |
