考虑光热发电的集中充电站有序充电决策

光热发电（concentrating solar power, CSP）作为一种重要的可再生能源发电技术, 通过聚光集热器、储热设备和汽轮机组等设备发电。相比光伏发电, CSP利用储热设备（thermal storage system, TSS）实现了类似传统燃汽轮机的调节性能好、爬坡能力强等出力特性, 并可在夜间或无光照时段持续放热发电。因此, 考虑CSP可为集中充电站提供可控、持续、稳定出力和良好的辅助服务, 利用其与集中充电站联合运行, 提出了考虑CSP的集中充电站有序充电策略, 构建了以集中充电站日购电成本和向电网缴纳的系统负荷波动惩罚费用综合最优为目标的有序充电模型。算例表明, 考虑CSP的集中充电站有序充电策略可有效降低购电成本和平抑系统负荷波动。此外, 对比分析了光伏发电和CSP对运行结果的影响, 对不同储热设备容量配置下的运行结果作了比较分析。

Decision-making of Orderly Charging of Centralized Charging Station Considering Concentrating Solar Power

Concentrating solar power （CSP）, as an important renewable energy power generation technology, generates electricity by using concentrating collectors, thermal storage system and steam turbines, etc. Compared with photovoltaic power generation, CSP uses thermal storage system （TSS） to achieve similar output characteristics such as good regulation performance and strong climbing ability with conventional gas turbines, and continuous heat generation at night or in the absence of light. Therefore, considering CSP can provide controllable, continuous and stable output, and good auxiliary services for centralized charging stations, CSP and centralized charging station are integrated to operate together. An orderly charging strategy for centralized charging stations considering CSP is proposed, and an orderly charging model with the objective of minimizing the total costs of daily purchase electricity cost and system load fluctuation penalty fee is constructed. Numerical simulation results show that, considering CSP can effectively reduce the electricity purchase costs and balancing the fluctuation of system load. Besides, the different effects of photovoltaic power generation and CSP on the operation results are analyzed comparatively, and the operation results under different TSS capacity configurations are analyzed comparatively.