摘要
自能源是一种具备全双工、分布式、对等化和智能化等重要特性的能源互联网基本能源单元,其对于促进可再生能源消纳、提升能源利用效率、降低能源系统碳排放具有重要意义。该文研究了自能源运行时的安全性与经济性,提出一种针对自能源的双层控制策略。结合异构能源网络的网络特性与动力学规律,首次推导得到综合能源系统多维"负载–参数"演化规律,进而提出自能源外层控制策略,实现自能源电能与热能输出按比例分配,避免自能源出现高负荷或过载现象。当新能源出力波动时,外层控制策略将自适应调节参数来保证其有效性。同时所提控制策略不需要自能源间进行信息交互,从而减少通信问题对系统安全运行带来的影响。内层控制以自能源的能量转换特性为基础,通过对自能源内部设备进行控制来最小化自能源的运行费用,同时保证各个设备的容量裕度,减少设备过载的情况,实现自能源的经济与安全运行。为验证方法有效性,以一个若干自能源组成的综合能源系统为算例进行分析,同时给出不同负荷变化情况对控制方法的影响。
As a basic energy unit of energy Internet with full duplex,distributed,peer-to-peer and intelligent characteristics,we-energy(WE)is of great significance for promoting the consumption of renewable energy,improving energy utilization efficiency and reducing carbon emission of energy system.This paper proposed a dual control of WE considering security operation and economic efficiency.Combining the network characteristics and dynamics of heterogeneous energy networks,the multi-dimensional‘load-parameter’evolution law of the integrated energy system was derived for the first time.And a control strategy of WE outputs was proposed to proportionally allocate the electricity and heat outputs of WEs so as to avoid high load or overload of the WE.When the output of new energy fluctuates,the control strategy will adaptively adjust the parameters to ensure its effectiveness.Meanwhile,the decentralized control of WEs can be realized to eliminate the impact of communication on security operation by implementing the proposed method.Furthermore,in view of the characteristics of WE,the elements in energy hubs also need to be regulated to reduce the cost and ensure security operation.The control of inner devices can reach to the minimal cost and ensure the security operation of the WE.Numerical simulations demonstrate the effectiveness of the proposed method.
作者
张宁
孙秋野
杨凌霄
黄博南
ZHANG Ning;SUN Qiuye;YANG Lingxiao;HUANG Bonan(Intelligent Electrical Science and Technology Research Institute,Northeastern University,Shenyang 110819,Liaoning Province,China)
出处
《中国电机工程学报》
EI
CSCD
北大核心
2020年第S01期155-166,共12页
Proceedings of the CSEE
基金
国家重点研发计划项目(2018YFA0702200)
国家自然科学基金项目(61573094,61603085)
关键词
综合能源系统
自能源
双层控制
安全运行
经济效益
比例分配
新能源
integrated energy systems
we-energy(WE)
dual control
security operation
economic efficiency
power sharing
renewable energy
作者简介
张宁(1993),男,博士研究生,研究方向为能源互联网、分布式协同控制、增强学习、综合能源系统能量管理,hbuzhangning@163.com;孙秋野(1977),男,教授,博士生导师,研究方向为电力系统、电气工程及其自动化、能源互联网、微电网、分布式优化、分布式控制等,sunqiuye@ise.neu.edu.cn;杨凌霄(1992),女,博士研究生,研究方向为机器学习及其在能源互联网、微网、配电网等,ylxiao66@163.com;黄博南(1982),男,副教授,硕士生导师,研究方向为综合能源系统、信息物理系统,huangbonan@ise.neu.edu.cn。
