基于随机模拟和EMD的含风光电力系统AGC调频储能定容  

Energy storage capacity determination for AGC frequency modulation in the power system with wind and photovoltaic power based on the stochastic simulation and EMD

作　　者：杨海晶 饶宇飞 李朝晖 孙鑫 YANG Haijing;RAO Yufei;LI Zhaohui;SUN Xin(Electric Power Research Institute,State Grid Henan Electric Power Company,Zhengzhou 450052,China)

机构地区：[1]国网河南省电力公司电力科学研究院,河南郑州450052

出　　处：《电力科学与技术学报》2022年第5期58-65,99,共9页Journal of Electric Power Science And Technology

基　　金：国网河南省电力公司科技项目(52170220000V)。

摘　　要：风电和光伏的大量接入导致电力系统转动惯量减少,从而引发电力系统自动发电控制的调频问题。储能装置能快速、精准的参与电网调频,在实际工程问题中已得到广泛应用。在此背景下,提出一种基于随机模拟和经验模态分解的含风光电力系统自动发电控制储能定容方法。首先,在创建随机生产模拟模型的基础上,采用经验模态分解区域控制偏差从而获得储能调频的高频分量和传统机组调频的低频分量,随后,通过储能负责的高频分量求解储能容量,并考虑储能充放电条件对储能进行模拟。最后,对比无储能和不同储能容量下的调频效果,得到调频效果最优的储能容量。算例仿真及结果表明文中方法有效可行,可以获取含风光电力系统自动发电控制最优储能容量。With the deep penetration of wind and photovoltaic power,the moment of inertia in the power system is reduced,resulting in the problem of frequency modulation for the automatic generation control of the power system.Energy storage is widely applied in the frequency modulation of power systems due to its fast reaction and accuracy.As a result,random simulation and empirical mode decomposition are combined to propose an energy storage capacity determination method in automatic generation control.Firstly,the empirical mode decomposition is utilized to decompose the regional control deviation into the high-frequency and low-frequency components.The energy storage frequency modulation is responsible for its high-frequency components,while traditional unit frequency modulation is in charge of its low-frequency components.Afterwards,the energy storage capacity is calculated via the high-frequency components of regional control deviation,and the energy storage is simulated considering the energy storage charge and discharge conditions.In the end,the frequency modulation effect is compared for the scenarios with different energy storage capacities and also without energy storage,and the energy storage capacity with the best frequency modulation effect is given consequently.The example simulation and results show that the proposed method is effective and feasible for obtaining the optimal energy storage capacity of automatic generation control in wind and solar power systems.

关 键 词：自动发电控制 风光 随机生产模拟 经验模态分解 储能定容 

分 类 号：TM711[电气工程—电力系统及自动化]