计及储能调节特性的直流微电网优化调度研究

Research on Optimal Scheduling of DC Microgrid Considering Energy Storage Regulation Characteristics

具有分布式电源及储能系统的独立直流微电网在提高供电可靠性方面发挥着重要的作用。探讨了不同运行模式下的直流微电网的能源调度优化问题,包括柴油发电机、燃料电池、微型燃气轮机以及光伏、风电等典型的分布式电源以及电力负荷需求。根据系统模型的运行和维护成本、燃料成本、能源的污染物排放成本以及储能运行成本,以系统总运行成本最小为目标建立了优化调度模型。采用一种基于天牛群搜索算法的改进智能算法对模型进行求解。通过对含储能设备和不含储能设备两种工作环境进行优化测试,验证了储能的调节特性对于优化微电网运行以及减小成本方面的重要意义,同时也证明了所提出调度模型的有效性和优越性。

Independent DC microgrid with distributed power supply and energy storage system plays an important role in improving power supply reliability.The energy scheduling optimization of DC microgrid under different operating modes was discussed,including diesel generator,fuel cell,micro gas turbine,photovoltaic,wind power and other typical distributed power sources and power load requirements.According to the operation and maintenance cost,fuel cost,pollutant emission cost of energy and energy storage operation cost of the system model,the optimization scheduling model was established to minimize the total operating cost of the system.An improved intelligent algorithm based on beetle swarm optimization algorithm was used to solve the model.Through the optimization test of two working environments with and without energy storage devices,the significance of considering energy storage regulation characteristics for optimizing microgrid operation and reducing costs was verified,and the effectiveness and superiority of the proposed scheduling model were also proved.