Multi-objective optimal scheduling strategy for wind power, PV and pumped storage plant in VSC-HVDC grid

The Journal of Engineering

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[1] Grid-connected Operation Technology For Wind-Solar-Storage Hybrid System State Grid Corporation Key Laboratory, Electric Power Research Institute, State Grid Jibei Electric Power Co., Ltd., Xicheng District, Beijing, People's Republic of China;

关键词: energy consumption;    pumped-storage power stations;    power generation control;    HVDC power transmission;    wind power plants;    power grids;    substations;    HVDC power convertors;    power generation scheduling;    wind power;    solar power;    photovoltaic power systems;    voltage-source convertors;    state conversion;    unit start-up–shutdown;    grid security;    day-ahead forecasts;    t-location scale;    Beijing;    pumped storage power;    VSC-HVDC power grid;    maximum renewable energy consumption;    renewable energy power;    pumped storage power plant;    VSC-HVDC capacity;    minimum power fluctuation;    maximum energy consumption;    renewable energy generation;    convertor substation;    pumped storage generation;    pumped storage unit;    solar power;    Zhangbei demonstration project;    PV;    wind power;    multiobjective optimal scheduling strategy;   

DOI  :  10.1049/joe.2018.8435

来源: publisher

【 摘 要 】

Zhangbei demonstration project will be the world's highest voltage level and largest capacity VSC-HVDC power grid, by which millions of kilowatts of renewable energy and pumped storage power will be supplied to Beijing. Due to the uncertainty of wind power and solar power, and the operating range restriction of pumped storage unit, it is urgent to find the solution to the problem of plan making of pumped storage generation and convertor substation after the Zhangbei demonstration project completes. This paper analyses the fluctuation characteristics of renewable energy generation in converter substation, based on the t-location scale, then proposes a multi-objective optimal scheduling strategy for wind power, PV, and pumped storage plant in VSC-HVDC grid, with maximum energy consumption and minimum power fluctuation at the load side and vicinity of the adjusting side as the target, considering the constraints from day-ahead forecasts, VSC-HVDC capacity, unit start-up–shutdown, and state conversion. Simulation results show that authors’ strategy can make use of pumped storage power plant to inhibit the fluctuation of renewable energy power and make the maximum renewable energy consumption within the allowed power fluctuation at the sides, attaining a good balance between energy consumption and grid security.

【 授权许可】

CC BY