摘要
为了解决将可再生能源与火电集成耦合为一个发电主体后,耦合系统与现有电网调度体系不兼容的问题,提出了适用于风-光-火耦合系统运行控制的状态感知及预测技术。首先,针对耦合系统的运行特性,从“状态感知数据获取—运行状态评价指标建立—运行状态划分”3个步骤提出运行状态的实时感知方法,实现了耦合系统运行状态的准确感知。然后,提出耦合系统整体出力预测方法,为电网调度提供功率控制指令的决策信息。针对耦合系统内部多电源的协同控制,提出多电源可行运行域建模方法,实现了耦合系统整体运行状态的预测。基于东北某地区实际算例及运行数据的仿真结果表明,所提方法能够有效实现风-光-火耦合系统的运行状态感知及预测,有助于提升耦合系统的整体运行控制性能并使其更好地融入实际电网的调度体系。
When renewable energy and thermal power are integrated and coupled into a power generation entity,the coupled system will be incompatible with the existing power grid dispatching system.In order to solve this problem,a state perception and prediction technology applicable to operation control of the wind-photovoltaic-thermal power coupled system is proposed.Firstly,according to the characteristics of the coupled system,a real-time state perception method is proposed from the three steps of“state perception data acquisition,operating state evaluation index establish-ment,and operating state division”to achieve the accurate perception of the real-time operation state of the coupled system.Then,a method for predicting the overall output of the coupled system is proposed to provide the decision-making information of power control command for grid dispatching.For the cooperative control of multiple power sources in the coupled system,a modeling method for the dispatchable operation region based on multi power supply is proposed,and the prediction of the overall operation state of the coupled system is realized.The simulation results of a practical example and operation data in Northeast China show that the proposed method can be adopted to effectively realize the operation state perception and prediction of the wind-photovoltaic-thermal coupled system,help improve the overall operation control performance of the coupled system,and facilitate the integration into the current power grid dispatching system.
作者
唐冰婕
陈宁
张磊
崔岩
黄笑伯
TANG Bingjie;CHEN Ning;ZHANG Lei;CUI Yan;HUANG Xiaobo(State Key Laboratory of Operation and Control of Renewable Energy&Storage Systems,China Electric Power Research Institute,Nanjing 210003,China;State Grid Liaoning Electric Power Co.,Ltd.,Shenyang 110004,China)
出处
《高电压技术》
EI
CAS
CSCD
北大核心
2024年第4期1596-1607,I0036,I0037,共14页
High Voltage Engineering
基金
国家重点研发计划(2019YFB1505400)。
关键词
可再生能源
耦合系统
状态感知
趋势预测
可行运行域
renewable energy
the coupled system
state perception
trend prediction
dispatchable operation region
