Multifunctional power grid dispatching system and method containing electric vehicle aggregator

Abstract

The invention discloses a multifunctional power grid dispatching system and method containing an electric vehicle aggregator. The system comprises a power grid regulation and control center, a thermal power plant, a renewable energy power plant, the electric vehicle aggregator and a user load. The multifunctional power grid dispatching system realizes power grid multifunctional dispatching by using an electric vehicle cluster under the flag of an electric vehicle aggregator, including peak load shifting, renewable energy consumption and power grid emergency dispatching; the electric vehicle aggregator comprises a data processing module, a prediction module, a central decision module and a charging and discharging control module. The data processing module receives a dispatching instruction of a power grid regulation and control center and transmits the instruction to the central decision module; and the central decision module receives the scheduling instruction of the data processing module and the electric vehicle state information and quoted price of the electric vehicle cluster, executes charging and discharging calculation of the electric vehicle cluster, and transmits data to the charging and discharging control module to control the electric vehicle cluster.

Description

technical field [0001] The invention belongs to the field of power systems, and more specifically relates to a multifunctional power grid dispatching system and method including an electric vehicle aggregator. Background technique [0002] As a new type of electric load, electric vehicles have strong randomness and large fluctuations in their charging behavior, which often cause additional burdens on the power grid. It can be foreseen that in the future when large-scale electric vehicles are connected, disorderly electric vehicles The grid-connected charging of vehicles will affect the economical, stable and reliable operation of the grid, so it is necessary to adopt a reasonable and orderly optimization and regulation method for the charging behavior of electric vehicles. [0003] In order to achieve the goal of "double carbon", China proposes to increase the total installed capacity of wind power and solar energy to 1.2 billion kilowatts in 2030, and the proportion of non-...

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Problems solved by technology

[0002] As a new type of electric load, electric vehicles have strong randomness and large fluctuations in their charging behavior, which often cause additional burdens on the power grid. It can be foreseen that in the future when large-scale electric vehicles are connected, disorderly electric vehicles The grid-connected charging of vehicles will affect the economical, stable and reliable operation of the grid, so it is necessary to adopt a reasonable and orderly optimization and regulation method for the charging behavior of electric vehicles

[0003] In order to achieve the goal of "double carbon", China proposes to increase the total installed capacity of wind power and solar energy to 1.2 billion kilowatts in 2030, and the proportion of non-fossil energy consumption to reach 25%, and plans to further increase the proportion of renewable energy in energy consumption in 2050 To more than 60%, intermittent renewable energy sources such as wind power and photovoltaics will gradually change from secondary energy sources in the power system to primary energy sources. Large characteristics, grid connection and consumption are difficult, and at the same time, it will have an impact on the stability of the power grid, seriously affecting the long-term development of my country's renewable energy industry

[0004] At the same time, with the continuous increase of the proportion of renewable energy in the power grid, the synchronous generators on the power supply side are gradually replaced by power electronic equipment, the traditional frequency modulation resources in the system are gradually scarce, and the continuous reduction of inertia has become a problem faced by most national power systems. The common problem is that the reduction of reserve capacity often leads to large-scale fluctuations in the system frequency after the power system is seriously disturbed and the active power is unbalanced.

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