计及动态响应特征的农村综合能源系统分层调控

Hierarchical Management for Rural Integrated Energy System Considering Dynamic Response Characteristics

针对农村综合能源系统中平抑间歇式可再生能源波动造成的生态养殖热电联产系统大范围出力波动问题,提出了一种计及储能和热电联产快慢协同的农村综合能源系统分层控制框架。首先,分析了生态养殖过程中的废弃物和沼气发电的多能耦合特征及其典型结构。进而,建立考虑光伏发电、沼气热电联产、生物质储能等的生态综合能源系统模型,提出基于饱和滤波器的快慢协同控制系统。最后,建立考虑经济调度和快慢协调控制的分层框架,兼顾最小化外购电成本需求以及光伏和负荷不确定性对设备调控的影响。算例分析表明,所提调度策略能够有效降低运行成本,平抑光伏和负荷预测误差导致的热电联产出力频繁调整,帮助农村综合能源系统实现光伏发电的完全消纳。

To mitigate the large-scale output fluctuations in a biogas-driven combined heat and power(CHP)system caused by the fluctuations in intermittent renewable energy,a hierarchical management framework for an rural integrat⁃ed energy system considering energy storage and CHP under coordinated control is proposed in this paper.First,the multi-energy coupling characteristics of waste and biogas power generation during the ecological cultivation process are analyzed,together with the corresponding typical structure.Then,a model of ecological integrated energy system is es⁃tablished considering photovoltaic(PV)power generation,biogas-driven CHP,methane storage,etc.,and a coordinat⁃ed control system based on saturated filter is put forward.Finally,a hierarchical framework is established considering economical scheduling and coordinated control,as well as the minimization of electricity purchase costs and the impact of uncertainties in PV and loads on equipment scheduling.The results of an example demonstrate that the proposed scheduling strategy can effectively reduce the operating cost while mitigating the frequent CHP output regulations caused by the forecasting errors of PV and loads,thus helping the rural integrated energy system realize the complete consumption of PV power generation.