适应分布式光伏动态特性的改进电能计量模型  

Improved model for power metering based on dynamic characteristics of distributed photovoltaic power generation

作　　者：窦晓波[1] 杨磊[1] 马建 陈克绪 全相军[1] 

机构地区：[1]东南大学电气工程学院,江苏南京210096 [2]国网江西省电力科学研究院,江西南昌330019

出　　处：《电力自动化设备》2017年第10期34-42,共9页Electric Power Automation Equipment

基　　金：国家重点研发计划资助项目(2016YFB0900404);国家自然科学基金资助项目(51777031);江苏省重点研究计划资助项目(BE2015012-1);国家电网公司科技项目(521820150005)~~

摘　　要：针对分布式光伏发电模型,建立了分布式光伏并网信号数学表征式;基于时分割乘法器(TDM)电能计量模型,分析电能计量算法在谐波和电压波动条件下的误差产生理论,设计适应分布式光伏动态特性的有功计量修正模块,给出基于Hilbert变换的无功功率计量方法;将光伏并网信号数学表征式与改进的电能计量模型结合,提出了适应分布式光伏动态特性的改进电能计量模型,通过仿真验证了所提模型的有效性。Based on distributed PV（Photo Voltaic） power generation model,the mathematical expressions of distributed PV grid-connected signals are formulated. To analyze theoretical error expressions under harmonic and voltage fluctuation conditions,TDM（Time Division Multiplier） based power metering model is presented.Meanwhile,error correction modules of active power metering based on the harmonic frequency and voltage fluctuation detection are designed,and an improved approach of reactive power metering through Hilbert transform is proposed. An improved model for power metering based on dynamic characteristics of distributed PV power generation is proposed,which is combined with the mathematical models of distributed PV gridconnected signals. Simulative results verify the validity of the proposed model.

关 键 词：分布式光伏发电 谐波分析 电压波动 有功计量 无功计量 

分 类 号：TM615[电气工程—电力系统及自动化]