Distributed robust optimization method for flexible resources of power system

A system flexibility and robust optimization technology, applied in the field of distributed robust optimization of flexible resources in power systems, can solve problems such as inconvenient real-time communication, unbalanced supply and demand, and difficulties

Active Publication Date: 2020-01-07
GUANGDONG POWER GRID CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The problem with deterministic optimization is that it is impossible to take into account the characteristics of renewable energy such as uncertainty and volatility in the optimization, and it is easy to cause an imbalance between supply and demand in actual situations, resulting in greater economic losses; while c

Method used

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  • Distributed robust optimization method for flexible resources of power system
  • Distributed robust optimization method for flexible resources of power system
  • Distributed robust optimization method for flexible resources of power system

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Embodiment 1

[0058] Please refer to the attached figure 1 , is a schematic flowchart of a distributed robust optimization method for flexible resources in a power system provided in Embodiment 1 of the present invention. The method specifically includes the following steps:

[0059] S101. Obtain the cost expectations and constraints of each power supply energy in the power system, and establish a robust optimization model for flexible resources;

[0060] S102. Using a dual method to convert the flexible resource robust optimization model into several single-objective optimization problems;

[0061] Specifically, step S102 further includes:

[0062] Transform the flexible resource robust optimization model into an equivalent Lagrangian dual problem:

[0063]

[0064] Among them, L can be decomposed into several different single-objective optimization problems Li:

[0065] x i =[x 1i , x 2i ,...,x Mi ] T .

[0066] S103. Solve several single-objective optimization problems to ...

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Abstract

The invention discloses a distributed robust optimization method for flexible resources of a power system. The method comprises steps of obtaining cost expectation and constraint conditions of power supply energy sources in the power system, and establishing a flexible resource robust optimization model; converting a flexible resource robust optimization model into a plurality of single-target optimization problems by adopting the duality method; and solving a plurality of single-target optimization problems to obtain a power system flexible resource distributed robust optimization scheme. Themethod is advantaged in that problems existing in flexible resource optimization in the prior art can be solved, the purpose of minimizing the total cost is achieved, moreover, the calculation burdencan be relieved, data privacy can be protected, and system stability can be improved.

Description

technical field [0001] The invention relates to the technical field of power systems, in particular to a distributed robust optimization method for flexible resources of a power system. Background technique [0002] In order to solve the serious environmental problems caused by the massive use of fossil fuels and meet the growing energy demand in an environmentally friendly manner, the current solution is to integrate a large proportion of renewable energy into the power system. However, the uncertain and unpredictable nature of renewable energy such as wind energy and photovoltaic power generation poses great challenges to the dispatch and operation of power systems. Therefore, there is an urgent need for dispatchable flexible resources, such as conventional generators, energy storage systems, and deferrable loads, to maintain the power supply-demand balance between fluctuating renewable energy generation and time-varying load demands. [0003] Existing research results sh...

Claims

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Application Information

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IPC IPC(8): H02J3/00H02J3/38
CPCH02J3/00
Inventor 罗松林罗煜司徒友陈威洪张鑫李敬光刘树安宋想富陈守滨吴伟东周娟邱泽坚
Owner GUANGDONG POWER GRID CO LTD
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