Optimal configuration method of distributed power generation based on user-side economic index

Abstract

The invention discloses a distributed power source optimizing configuration method based on user-side economic indexes and relates to the technical field of distributed power generation in electric systems. The method includes the steps that firstly, an optimization problem mathematical model is established with the minimum user cost as a target and in combination with operation constraint conditions of all units, and then benefits and costs of a user side and a power grid side are obtained; then, capacities and power of all distributed power sources are changed and then are led into the optimization model to be calculated, corresponding benefits and costs are obtained, and the benefits and costs are used as inputs and outputs to train a neural network, and therefore the optimum distributed power source capacity and power can be obtained. The method has the advantages that economic analysis and estimation methods for a distributed power source grid-connected system based on the user-side economic indexes are provided, and the optimum configuration from which users can obtain the greatest benefits is obtained; based on the method, economic estimation is also performed on a power supply side, and the optimizing problem of the system is simplified to be a linear programming problem; accordingly, computation is simplified, a relatively comprehensive and systematic economic analysis method is provided, so the method has engineering promotional value.

Description

technical field [0001] The invention belongs to the technical field of distributed power generation in power systems, and in particular relates to an optimal configuration method of a distributed power supply based on user-side economic indicators. Background technique [0002] As global environmental and energy issues become increasingly prominent, more attention has been paid to environmentally friendly and economical distributed power generation. The system composed of distributed power supply and energy storage device, while the distributed power supply is generating electricity, the energy flow control of the system is more flexible due to the addition of the energy storage device, which can be based on the output power of the distributed power supply and the electricity price used by the user Such a system can reduce end-user costs, improve power quality, and maintain stable operation of the power grid. At the same time, it has the advantages of environmental friendlin...

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Problems solved by technology

At present, the research on distributed power at home and abroad is mainly focused on the economic dispatch of the system and the location and capacity of the power supply, lacking a relatively systematic and complete economic analysis and evaluation plan; Establish mathematical models for conventional power sources and energy storage devices, take the minimum total investment of the system as the objective function, and take the reliable operation of the power grid as the constraint conditions to determine the scheduling method and constant capacity. However, these studies pay more attention to the advanced nature of the algorithm, resulting in The calculation is cumbersome and the reliability of the results is not high, the engineering practice is not strong, and the promotion value is not high

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