| 引用本文: | 王二永,王帅.自适应下垂系数的低压微电网功率控制策略[J].电力系统保护与控制,2019,47(23):52-56.[点击复制] |
| WANG Eryong,WANG Shuai.Power control strategy of low voltage microgrid based on adaptive droop coefficient[J].Power System Protection and Control,2019,47(23):52-56[点击复制] |
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| 摘要: |
| 在多分布式电源(DG)并列运行的低压微电网系统中，反下垂控制是实现负荷合理分配的有效方式。但各DG的等效输出阻抗和线路阻抗差异较大时，传统反下垂控制的功率分配精度将受到明显的影响，降低了系统的稳定性。针对这一问题，提出一种适用于低压微电网系统的自适应下垂系数功率分配控制策略。其下垂系数的值随额定负载功率与实际负载功率的差值的变换而自适应调整，提高了对公共负荷合理分配的精确性。最后，在仿真平台上验证了所提策略的正确性和有效性。 |
| 关键词: 低压微电网 多分布式电源 反下垂控制 自适应 下垂系数 |
| DOI：10.19783/j.cnki.pspc.190405 |
| 投稿时间：2019-04-11修订日期：2019-09-06 |
| 基金项目:河南省高等学校重点科研项目资助(17A510002);河南理工大学博士基金项目资助(B2016-18) |
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| Power control strategy of low voltage microgrid based on adaptive droop coefficient |
| WANG Eryong,WANG Shuai |
| (School of Electrical Engineering and Automation, Henan University of Technology, Jiaozuo 454150, China) |
| Abstract: |
| In low-voltage microgrid system in which multiple DGs are operated in parallel, reverse drooping control is an effective way to realize reasonable load distribution. However, when the equivalent output impedance and the line impedance of the DG are different, the power allocation accuracy of the traditional reverse droop control will be obviously affected and the stability of the system will be reduced. In order to solve this problem, an adaptive droop coefficient power allocation control strategy for low voltage micro-grid system is proposed. The value of droop coefficient is adjusted adaptively with the transformation of the difference between rated load power and actual load power, which improves the accuracy of reasonable distribution of public load. Finally, the correctness and effectiveness of the proposed strategy are verified on simulation platform. This work is supported by the Key Scientific Research Projects in Henan Colleges and Universities (No. 17A510002) and PhD Foundation of Henan Polytechnic University (No. B2016-18). |
| Key words: low-voltage micro-grid multiple DGs inverse droop control adaptive droop coefficient |
