多源融合下计及调频优化的经济调度研究Research on Economic Dispatch Considering Frequency Modulation Optimization under Multi-source Integration
陈东海,蔡振华,金力,李亦凡
CHEN Donghai,CAI Zhenhua,JIN Li,LI Yifan
摘要(Abstract)：
针对新能源渗透率日益增高造成多源融合电网调频能力下降的问题,提出以常规发电机组调频为主、新能源场站与储能电站调频为辅的联合调频方法。以不同种类机组的调频死区作为联合调频策略的划分区间,使得联合调频方法能够应用于电网日常运行。同时建立计及调频成本、频率稳定指标和主体运营商收益的多目标联合经济调度模型,将频率稳定性指标转化为惩罚成本函数,采用MILP(混合整数线性规划)方法求解模型。最后经算例仿真验证,该联合调度模型能够有效降低系统调度成本,提高运营收益。
In view of the declining frequency regulation capability of multi-source integrated power grids with an increasing penetration rate of new energy, this paper proposes a joint frequency regulation method that relies mainly on traditional generating units frequency regulation with new energy station and energy storage station frequency regulation being only subsidiary. The frequency modulation dead zone is used as the division interval of the joint frequency modulation strategy so that the joint frequency modulation of multi-source generators can be applied to the daily operation of the power grid. At the same time, a multi-objective joint economic dispatch model that takes into account the cost of frequency modulation, frequency stability indicators and the main operator's income is established to convert the frequency stability indicators into a penalty cost function, and the MILP(mixed-integer linear programming) method is employed to solve the model. Finally,the simulation results of a calculation example show that the joint dispatch model can effectively reduce the system dispatch cost and increase operation profit.
关键词(KeyWords)：
新能源渗透;多源联合调频;多目标联合调度;混合整数线性规划
new energy penetration;multi-source integrated frequency modulation;multi-objective joint dispatch;MILP
基金项目(Foundation): 国家电网有限公司科技项目（5211NB1800VQ）;; 国家自然科学基金（U1866206）
作者(Author):
陈东海,蔡振华,金力,李亦凡
CHEN Donghai,CAI Zhenhua,JIN Li,LI Yifan
DOI: 10.19585/j.zjdl.202104005
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