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A Method for Solving Convex Distributed Optimal Power Flow in Power System

A power system and optimal power flow technology, applied in electrical components, circuit devices, AC network circuits, etc., can solve problems such as non-convex distributed optimization, reduce the risk of information congestion, reduce the amount of information transmission, and solve distribution problems. The effect of the optimization problem

Active Publication Date: 2022-07-26
SOUTH CHINA UNIV OF TECH
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[0005] The present invention proposes a method for solving a convex distributed optimal power flow in a power system, which is used to solve the convex relaxation problem of non-convex items in the distributed optimal power flow problem and the distributed optimization problem

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  • A Method for Solving Convex Distributed Optimal Power Flow in Power System
  • A Method for Solving Convex Distributed Optimal Power Flow in Power System
  • A Method for Solving Convex Distributed Optimal Power Flow in Power System

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[0057] In order to make the objectives, technical solutions and advantages of the present invention clearer and clearer, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments.

[0058] like figure 1 , figure 2 , image 3 and Figure 4 As shown, this embodiment provides a method for solving a convex distributed optimal power flow in a power system, including the following steps:

[0059] Step S110 , according to the topological relationship of the power system model, divide the power system into several independent regions to form a distributed framework of the power system, without loss of generality, assume that it is divided into two regions, and add boundary coupling condition constraints.

[0060] Step1. According to the topological relationship of the power system model, the power system is divided into several independent areas to form a distributed framework of the power system. Without loss of ge...

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Abstract

The present invention proposes a convex distributed optimal power flow solution method for a power system, which includes the following steps: S1. According to the topology relationship of the power system model, the power system is divided into several independent regions, and boundary coupling condition constraints are added; S2, According to the method of penalizing convex and concave process, establish a convex distributed optimal power flow model of the power system on the distributed framework in step S1; S3, according to the alternating direction multiplier method, establish and solve the distributed optimal power flow problem on the basis of step S2; S4, according to the partial solution output result, determine whether the preset convergence condition is satisfied. The method of the invention transforms the non-convex distributed optimal power flow problem into a convex optimization problem and independently distributes and solves the optimal power flow problem in each region, thereby ensuring the accuracy of the obtained solution and the privacy of power information in each region.

Description

technical field [0001] The invention relates to the field of optimal power flow algorithms, in particular to a method for solving a convex distributed optimal power flow of a power system. Background technique [0002] Traditional power grids mainly use centralized algorithms for calculation in optimal scheduling, which requires a central computer to collect global data to perform centralized calculation and control. However, with the continuous expansion of the power grid and the development of the power market, the system operation of each sub-region of the power grid has a certain degree of privacy, which makes the centralized optimal dispatch no longer applicable. Distributed algorithms can solve the above limitations of centralized algorithms, and can reduce the amount of information transmission and the risk of information blocking. In recent years, more and more attention has been paid to power system applications. [0003] The optimal power flow (OPF) problem is ver...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02J3/06
CPCH02J3/06H02J2203/10H02J2203/20
Inventor 吴为聪余涛
Owner SOUTH CHINA UNIV OF TECH
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