新能源接入交直流混合微电网的设备调度方法研究  

Research on Equipment Scheduling Method for New Energy Access to AC/DC Hybrid Microgrids

作　　者：罗世刚 刘正英 李威武 许青 妥建军 LUO Shigang;LIU Zhengying;LI Weiwu;XU Qing;TUO Jianjun(Development Division of State Grid Gansu Electric Power Company(Economic and Technological Research Institute),Lanzhou 730046,China)

机构地区：[1]国网甘肃省电力公司发展事业部(经济技术研究院),甘肃兰州730046

出　　处：《自动化仪表》2024年第6期111-115,共5页Process Automation Instrumentation

基　　金：国网甘肃省电力公司信息通信公司科技基金资助项目(SGGSXT00SJJS1900134);国网甘肃省电力公司科技基金资助项目(52272317000C)。

摘　　要：为解决现有交直流混合微电网设备调度效果不佳的问题,提出新能源接入交直流混合微电网的设备调度方法。首先,分析了交直流混合微电网在运行过程中的不确定因素。然后,以提升电网运行稳定性为目标,建立了微电网优化调度的目标函数;同时,通过对交直流侧功率平衡的等式约束和对分布式电源与蓄电池的不等式约束,构建了优化调度模型。最后,通过优化的烟花算法完成调度模型求解,在保证模型稳定性的同时实现交直流微电网设备的优化调度。试验结果表明:应用所提方法,微电网长期处于售电状态,且调度成本始终在15元以内。该方法可提升微电网运行的稳定性和经济性。To solve the problem of poor equipment scheduling of the existing alternating current/direct current(AC/DC)hybrid microgrid,the equipment scheduling method for new energy access to AC/DC hybrid microgrids is proposed.Firstly,the uncertainty factors of AC/DC hybrid microgrid in the operation process are analyzed.Then,the objective function of optimal scheduling of microgrid is established with the goal of improving the stability of grid operation;at the same time,the optimal scheduling model is constructed through the equation constraints on the power balance of the AC/DC side and the inequality constraints on the distributed power source and the storage battery.Finally,the optimal fireworks algorithm is used to solve the scheduling model,which ensures the stability of the model and also realizes the optimal scheduling of the AC/DC microgrid equipment.The experimental results show that by applying the proposed method,the microgrid is in the state of selling electricity for a long time,and the scheduling cost is always within CNY15.The method can improve the stability and economy of microgrid operation.

关 键 词：新能源 微电网 出力不确定性 优化调度 光伏出力 交直流 适应度 

分 类 号：TH-39[机械工程]