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基于离散一致性算法的直流配电网多光伏协调控制策略
作者:
作者单位:

1.东南大学电气工程学院,江苏省南京市 210096;2.新能源电力系统国家重点实验室,华北电力大学,北京市 102206

摘要:

针对多光伏直流配电网系统在不同应用场景下存在的功率波动,文中提出了一种基于离散一致性算法的分布式多光伏协调控制策略。首先,相邻光伏控制器之间可以进行功率偏差和运行模式信息的交换,通过离散一致性算法可以获得功率偏差和运行模式的平均值。然后,更新运行模式指令和功率参考指令,并通过利用光伏之间的互补功率来平衡功率偏差。光伏可自适应地工作在最大功率跟踪模式或定功率模式。采用这种方式,即使光伏的光照强度和额定容量不均匀,也可以保证功率平衡。最后,通过仿真结果验证了所提控制策略的有效性。

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基金项目:

国家重点研发计划资助项目(2018YFB0904100);国家电网公司科技项目(SGHB0000KXJS1800685)。

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作者简介:


Multi-photovoltaic Coordinated Control Strategy in DC Distribution Network Based on Discrete Consensus Algorithm
Author:
Affiliation:

1.School of Electrical Engineering, Southeast University, Nanjing 210096, China;2.State Key Laboratory of Alternate Electrical Power System with Renewable Energy Sources, North China Electric Power University, Beijing102206, China

Abstract:

Aiming at the power fluctuation of multi-photovoltaic (PV) DC distribution network systems in different application scenarios, this paper proposes a distributed multi-PV coordinated control strategy based on the discrete consensus algorithm. First, the information of the power deviation and the operation modes can be exchanged between neighbor PV controllers. The average value of power deviation and operation modes can be obtained through the discrete consensus algorithm. Then the operation mode instructions and power reference instructions can be updated and the power deviation is balanced by utilizing power complementary between PVs. PVs can operate in maximum power tracking mode or constant power mode adaptively. In such way, power balance will be guaranteed even if the light intensity and rated capacity of PVs are uneven. Finally, the simulation results verify the effectiveness of the proposed control strategy.

Keywords:

Foundation:
This work is supported by the National Key R&D Program of China (No. 2018YFB0904100) and State Grid Corporation of China (No. SGHB0000KXJS1800685).
引用本文
[1]汤茂东,曲小慧,姚若玉,等.基于离散一致性算法的直流配电网多光伏协调控制策略[J/OL].电力系统自动化,http://doi. org/10.7500/AEPS20200513004.
TANG Maodong, QU Xiaohui, YAO Ruoyu, et al. Multi-photovoltaic Coordinated Control Strategy in DC Distribution Network Based on Discrete Consensus Algorithm[J/OL]. Automation of Electric Power Systems, http://doi. org/10.7500/AEPS20200513004.
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  • 收稿日期:2020-05-13
  • 最后修改日期:2020-09-28
  • 录用日期:2020-09-06
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