摘要
高比例新能源电力系统的惯量支撑能力弱、随机波动性强,电网频率质量难以得到保障。引入不同品类调频资源共同参与自动发电控制(automatic generation control,AGC)是应对上述问题的有效手段,但这也要求AGC指令分配能够适配不同品类资源的差异化调节特性。对此,提出面向多源协调互济的AGC指令两阶段分配方法。首先,将不同资源分别安排至与自身调节特性相匹配的超前分配阶段和实时分配阶段。其次,在实时分配阶段提出基于资源调节优先级的AGC指令分配策略,根据不同品类资源的调节特性以及电网频率状况对资源调节优先级进行设定,以互补利用各类资源的调节优势。然后,在超前分配阶段,建立优化分配模型以实现不同品类资源的协调最优利用。同时,嵌入与资源剩余调节裕度相关的惩罚项,以保障资源持续调节能力。最后,基于电网实际数据的算例仿真验证了所提方法的有效性。
The weak inertia support and strong stochastic fluctuations of high-proportion renewable energy power systems make it difficult to ensure the frequency quality of the power grid.Introducing different types of frequency regulation resources to participate in automatic generation control(AGC)is an effective way to handle the above problem,but it also requires that the AGC command allocation can adapt to the differentiated characteristics of different frequency regulation resources.To address this issue,a two-stage allocation method for AGC command with multi-resource coordination is proposed.First,different types of resources are arranged into the proactive AGC allocation stage or the real-time AGC allocation stage that matches their characteristics.Second,in the real-time allocation stage,an AGC command allocation strategy based on the allocation priority of resources is proposed.The allocation priority is designed according to the regulation characteristics of different resources and the frequency status of power systems.In this way,the superiority of different resources can be complementally utilized.Third,in the proactive allocation stage,an optimal allocation model is established to achieve the coordinately optimal utilization of different resources.The penalty terms related to the residual regulation redundancy of regulation resources are embedded to ensure the persistence of the frequency regulation ability of resources.Finally,case studies based on practical power grid data verify the effectiveness of the proposed method.
作者
雷雨
向明旭
黄子蒙
许懿
杨知方
LEI Yu;XIANG Mingxu;HUANG Zimeng;XU Yi;YANG Zhifang(State Grid Chongqing Electric Power Company,Chongqing 400015,China;State Key Laboratory of Power Transmission Equipment Technology(Chongqing University),Chongqing 400044,China)
出处
《电力系统保护与控制》
EI
CSCD
北大核心
2024年第14期71-81,共11页
Power System Protection and Control
基金
国家自然科学基金青年科学基金项目资助(52307082)
国网重庆市电力公司科技项目资助(SGCQ0000DKJS2250027)
中央高校基本科研业务费资助(2023CDJXY-029)。
关键词
自动发电控制
指令分配
多源协调互济
持续调节能力
automatic generation control(AGC)
command allocation
multi-resource coordination
persistence of regulation ability
