基于分频原理和区域控制的风储火联合调频策略  

Frequency combination modulation strategy of wind power,energy storage and thermal power unit system based on frequency division and regional control principle

作　　者：曲彤 苏小林 阎晓霞 谭逸雪 Qu Tong;Su Xiaolin;Yan Xiaoxia;Tan Yixue(Department of Electrical Engineering,Shanxi University,Taiyuan 030013,China)

机构地区：[1]山西大学电力工程系,太原030013

出　　处：《电测与仪表》2018年第20期122-129,147,共9页Electrical Measurement & Instrumentation

摘　　要：为解决大规模风电并网带来的系统频率不稳定问题,在分析储能系统、风电机组、火电机组调频特性的基础上,提出了风储火联合调频策略。在一次调频中,以所提出的分频系统自动确定风储火的有功出力,提高了系统调频速度和调频质量。二次调频是在考虑一次调频容量的需求条件下,提出了计及机组备用大小、经济性、安全性、区域控制要求的联合调频策略,减轻了火电机组调频负担,提高了系统的频率调整速度和频率稳定性。通过仿真试验分析,结果表明所提出的联合调频策略较传统调频方式更适合于高风电渗透率的电力系统调频。In order to solve the problem of system frequency instability caused by large-scale wind power grid connection,based on the analysis of energy storage system,wind turbine and thermal power unit frequency modulation characteristics,this paper puts forward a frequency combination modulation strategy of the combined system.In the primary frequency modulation,the active power output of each source is determined by the proposed frequency division system,by this way,the frequency modulation speed and quality of the system are improved.Secondary frequency modulation based on the capacity demand of primary frequency modulation,a combined frequency modulation strategy is proposed considering the reserve size of each unit,economic,safety,regional control requirements,so as to reduce the burden of thermal power unit of frequency modulation,and improve the frequency adjusting speed and stability of the system.The simulation results show that the proposed combined frequency modulation strategy is more suitable for power system frequency modulation with high wind power permeability than the traditional frequency modulation method.

关 键 词：双馈型风力发电机 电池储能系统 频率稳定性 一次调频 二次调频 

分 类 号：TM93[电气工程—电力电子与电力传动]