Distributed energy virtual power plant operation optimization method and system

Abstract

The invention discloses a distributed energy virtual power plant operation optimization method and system. The method comprises the steps of determining virtual power plant power generation power according to gas turbine unit power generation power, interruptible load interruption electric quantity, power of an energy storage device and wind-solar power generation power in a virtual power plant; determining the operation cost of the virtual power plant according to the generated power of the virtual power plant; determining the operation cost of the traditional power plant according to the coal-fired unit power generation power in the traditional power plant; determining the pollution discharge of the gas turbine unit according to the generated power of the gas turbine unit; determining the pollution discharge of the coal-fired unit according to the generated power of the coal-fired unit; and performing distributed energy virtual power plant operation optimization processing by takingthe minimum sum of the virtual power plant operation cost, the traditional power plant operation cost, the gas turbine set pollution discharge amount and the coal-fired unit pollution discharge amountas a target. By adopting the method and the system provided by the invention, the influence of uncertainty of the distributed power supply on the power system can be reduced, and the pollutant discharge amount and the total operation cost can be effectively reduced.

Description

technical field [0001] The invention relates to the technical field of power systems, in particular to a distributed energy virtual power plant operation optimization method and system. Background technique [0002] The physical structure of a virtual power plant (Virtual Power Plant, VPP) is different from that of traditional power plants. Virtual power plants rely on communication technology and software systems to aggregate distributed energy sources such as distributed power sources, energy storage devices, and demand response loads for unified coordination. Control and participate in the operation and scheduling of the power system, coordinate the contradictions between the power grid and distributed energy, and fully reflect the benefits that distributed energy brings to the power grid and users. Although the virtual power plant can provide an effective smart grid operation framework for distributed energy, and can effectively solve the problem of grid-connected consum...

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Problems solved by technology

[0003] The existing optimization operation for virtual power plants to participate in power system scheduling is mainly to transform the uncertainty of multiple random variables such as distributed power output and load into deterministic problems, so as to solve the optimal scheduling model, but in actual virtual power plants participating in In the grid dispatching operation, this processing method cannot reduce the impact of distributed generation uncertainty on the power system

In addition, distributed renewable energy power generation, demand response loads, and energy storage equipment in the power components aggregated by distributed energy virtual power plants have no pollutant gas emissions during the operation process. The existing technology takes the minimum total operating cost of the power system as the objective function, and a single Emphasis on economy, without considering the environmental protection of distributed energy virtual power plants compared with traditional thermal power plants participating in power system dispatching

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