摘要
随着光伏装机容量占比不断增大,其出力的不稳定性和间歇性给电网运行带来安全风险,合理配置储能是提升光伏消纳率和保障电网安全运行的有效手段。为此,从输电网和配电网两个层面,在计及潮流交换约束的条件下进行全局考虑。在输电网层面,利用可灵活调节的电解铝负荷参与光伏电量消纳,在配电网侧合理配置储能对光伏出力波动进行平抑;输电网层面采用计及无功功率的输电网线性化潮流模型,配电网侧采用Distflow潮流模型。基于某一市级输电网和IEEE14配电网系统设计的算例进行仿真分析,计算结果表明,计及输电网电解铝负荷特性能够降低配电网侧储能配置成本。
With the increasing proportion of photovoltaic installed capacity,the instability and intermittency of its output bring security risks to power grid operation.Rational allocation of energy storage is an effective means to improve the photovoltaic consumption rate and ensure the safe operation of the power grid.Therefore,from the two aspects of transmission network and distribution network,the overall consideration is made under the condition of power flow exchange constraints.The flexible adjustable electrolytic aluminum load is used to participate in the consumption of photovoltaic power at the transmission network level,and the reasonable allocation of energy storage at the distribution network side can smooth the fluctuation of photovoltaic output.The linear power flow model with reactive power is adopted at the transmission network level,and the Distflow power flow model is adopted at the distribution network side.Based on the design of a municipal transmission network and IEEE14 distribution network system,the simulation analysis shows that taking into account the electrolytic aluminum load characteristics of the transmission network can reduce the energy storage configuration cost on the distribution network side.
作者
黄锦禄
HUANG Jinlu(Baise New Aluminum Power Co.,Ltd.,Baise 533000,Guangxi,China)
出处
《电力大数据》
2024年第5期46-53,共8页
Power Systems and Big Data
关键词
储能配置
光伏消纳
输电网
配电网
电解铝负荷
energy storage configuration
photovoltaic consumption
transmission network
distribution network
electrolytic aluminum load
