LIU Keyan, SHENG Wanxing, ZHAO Pengjie, et al. Distributed Control Strategy of Photovoltaic Cross-district Based on Consistency Algorithm[J]. 2021, 47(12): 4431-4439.
LIU Keyan, SHENG Wanxing, ZHAO Pengjie, et al. Distributed Control Strategy of Photovoltaic Cross-district Based on Consistency Algorithm[J]. 2021, 47(12): 4431-4439.DOI:
基于一致性算法的跨台区光伏分布式控制策略
摘要
电能路由器(能量路由器)是构建能源互联网的关键设备。针对含有多台电能路由器(electrical energy router
EER)的交直流配电网中分布式光伏(photovoltaic
PV)跨区域消纳和功率互济问题
提出了EER互联端口基于时间一致性算法的分布式控制(distributed control based on consistency algorithm
DCCA)策略
在保证直流母线电压稳定的前提下
同时实现了PV功率跨区域互济消纳。DCCA策略采用分层控制结构
在下垂控制基础上
引入PV输送二次控制和PV分配三次控制
EER仅需与相邻单元通信即可获得全局信息
克服了信息物理系统(cyber physicalsystem
CPS)集中控制高度依赖通信的局限;部分通信线路故障仍可保持可靠运行
鲁棒性强。通过MATLAB平台和中国电力科学研究院配电网CPS仿真平台搭建了相应的模型
仿真了高渗透率PV功率波动及通信故障算例
验证了控制策略的有效性和鲁棒性。
Abstract
The multi-port electrical energy router or energy router is a key device for constructing AC and DC energy internet. In the AC/DC distribution network based on electrical energy router(EER)
a distributed control based on consistency algorithm(DCCA) strategy for the EER interconnected port is proposed
which solves the problem of cross-district photovoltaic(PV) power mutual complement under the requirements of ensuring the stability of the DC bus voltage. By using the hierarchical structure
the power transmission secondary control and power distribution third control are introduced into the DCCA strategy based on traditional droop control. EER only needs to communicate with neighboring units to obtain global information
which overcomes the limitation of the cyber physical system(CPS) that is highly dependent on communication system. EER can still maintain reliable operation and strong robustness even if part of the communication line has faults. To verify the proposed strategy
the corresponding model through the MATLAB and China Electric Power Research Institute CPS simulation platform was built to simulate different scenarios such as PV fluctuation and communication failure
the effectiveness and robustness of the DCCA are verified.