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Convex distributed optimal power flow solving method for 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: 2020-12-11
SOUTH CHINA UNIV OF TECH
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Problems solved by technology

[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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  • Convex distributed optimal power flow solving method for power system
  • Convex distributed optimal power flow solving method for power system
  • Convex distributed optimal power flow solving method for power system

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[0057] In order to make the purpose, technical solution and advantages of the present invention more clear and definite, the present invention will be further described in detail below with reference to the accompanying drawings and examples.

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

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

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Abstract

The invention provides a convex distributed optimal power flow solving method for a power system. The method comprises the following steps: S1, dividing the power system into a plurality of independent regions according to the topological relation of a power system model, and adding boundary coupling condition constraints; S2, according to a penalty convex-concave process method, establishing a convex distributed optimal power flow model of the power system on the distributed framework in step S1; S3, establishing and solving the distributed optimal power flow problem on the basis of step S2 according to an alternating direction multiplier method; and S4, judging whether a preset convergence condition is met or not according to the partial solving output result. According to the method, anon-convex distributed optimal power flow problem is converted into a convex optimization problem, and the optimal power flow problem of each region is solved through independent distribution, so thatthe accuracy of the obtained solution is ensured, and the privacy of power information of each region is ensured.

Description

technical field [0001] The invention relates to the field of optimal power flow algorithms, in particular to a method for solving power system convex distributed optimal power flow. Background technique [0002] Traditional power grids mainly use centralized algorithms for calculation in optimal dispatching, which requires a central computer to collect global data to perform centralized calculation and control. However, with the continuous expansion of the scale 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-mentioned limitations of centralized algorithms, and can reduce the amount of information transmitted 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...

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Application Information

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Patent Type & Authority Applications(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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