Optimal scheduling method for power grid with clean energy constrained by maximum capacity criterion

A technology with maximum capacity and clean energy, applied in data processing applications, system integration technology, forecasting, etc., can solve problems such as grid frequency instability

Active Publication Date: 2019-05-28
XIAN UNIV OF TECH
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Problems solved by technology

[0004] The purpose of the present invention is to provide an optimal dispatching method for power grids containing clean energy that is constrained by the maximum capacity criterion, which solves the problem that the frequency instability of the power grid may be caused by the prior art in the process of connecting a large amount of clean energy to the grid, and provides a method for ensuring the stability of the power grid The maximum change (scheduling) capacity of accessible fluctuating power under the premise

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  • Optimal scheduling method for power grid with clean energy constrained by maximum capacity criterion
  • Optimal scheduling method for power grid with clean energy constrained by maximum capacity criterion
  • Optimal scheduling method for power grid with clean energy constrained by maximum capacity criterion

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[0049] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0050] The method of the present invention gives the maximum value of the allowable fluctuating power of each node through Lyapunov's inverse theorem, and applies the theory in the power optimization dispatching of the power system, under the premise of rationally arranging the output of each conventional unit and the charging and discharging of the energy storage unit , can ensure the operation stability of the power grid, and realize the intelligent regulation of the power grid. It can reasonably arrange the output of each conventional unit and the charging and discharging power of the energy storage unit under the constraints based on the maximum capacity criterion, so as to realize the reasonable consumption of clean energy power generation.

[0051] The following is a brief description and analysis of the grid model based on the second-ord...

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Abstract

The invention discloses an optimized dispatching method of a clean energy containing power grid based on the maximum capacity criterion constraints. The optimized dispatching method comprises the steps that 1, the Laplacian matrix of a system is determined according to a power grid model; 2, parameters are determined; 3, the maximum capacity criterion constraints of all nodes in a power grid are determined; 4, target parameters and parameters to be optimized are determined; 5, constraint conditions are determined based on a maximum capacity criterion; 6, the multi-target problem is optimized by adopting an NSGA-II online rolling algorithm. The method gives the clean energy access capacity ultimate value which can be stably maintained by the power grid, and the operating stability of the system is ensured based on reasonable dispatching.

Description

technical field [0001] The invention belongs to the technical field of power grid optimal dispatching, and relates to a method for optimal dispatching of a power grid containing clean energy, which is constrained by a maximum capacity criterion. Background technique [0002] In recent years, the installed capacity of clean energy such as solar energy and wind energy in countries around the world has grown rapidly. It is estimated that by 2020, China's clean energy power generation capacity will account for 28.4% of the total installed capacity. However, these clean energy power generation is intermittent and "uncontrollable". , when it is connected to the grid on a large scale, it will seriously affect the power quality of the existing grid, and even cause the voltage and frequency to collapse. How to coordinate the schedulable resources of the entire network to achieve efficient allocation of resources, reasonable consumption of clean energy power generation, and stable ope...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06Q10/04G06Q50/06
CPCG06Q10/04G06Q50/06Y02E40/70Y04S10/50
Inventor 任海鹏李赞赞李洁郭鑫彭书涛锁军
Owner XIAN UNIV OF TECH
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