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Quasi direct current optimal power flow method based on interior point semi-definite programming

A technology of optimal power flow and semi-definite programming, applied in instrumentation, data processing applications, forecasting, etc., can solve problems such as large errors, unsatisfactory calculation results, neglect of voltage and reactive power factors, etc., and achieve fast calculation speed and convergence Fast, robust effects

Inactive Publication Date: 2015-04-29
HOHAI UNIV
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Problems solved by technology

The model structure is simple, the equations are completely linearized, and the solution speed is fast, but it ignores the voltage and reactive power factors in the power flow constraints, sometimes the calculation results are not ideal, and the error is large

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  • Quasi direct current optimal power flow method based on interior point semi-definite programming
  • Quasi direct current optimal power flow method based on interior point semi-definite programming
  • Quasi direct current optimal power flow method based on interior point semi-definite programming

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Embodiment Construction

[0026] Below in conjunction with accompanying drawing, technical scheme of the present invention is described in further detail:

[0027] Semidefinite programming refers to the extremum problem of linear functions under the affine combination semi-positive constraints of symmetric matrices. It is a special cone optimization problem and can be regarded as an extension of linear programming. It has become a research hotspot in the field of numerical optimization. SDP has weak duality, that is, it has a non-negative complementary gap. Among them, the standard form of the original problem of SDP is:

[0028] min A 0 · X s . t A i ...

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Abstract

The invention discloses a quasi direct current optimal power flow method based on interior point semi-definite programming. Although a quasi direct current model of optimal power flow performs certain approximation simplification on an alternating current model, the mathematic model is simple in structure and high in calculation efficiency, constraint is linearized, the influence of voltage and idle work is neglected in the model, and results are low in accuracy. Aiming at the defect of the quasi direct current model, an algorithm for solving a QDCOPF model based on an SDP is provided, the calculation accuracy of the algorithm is greatly improved, and variable combinations in the SDP model are recombined and optimized.

Description

technical field [0001] The invention relates to a quasi-direct current optimal power flow method based on interior point semidefinite programming, and belongs to the field of power system optimization operation. Background technique [0002] With the increasing scale of power system and the occurrence of some serious accidents, people pay more and more attention to the safety of power system operation. Sex was also taken to a new level. Therefore, under the premise of satisfying the security of the power system, improving the economy as much as possible, rationally utilizing resource allocation and existing equipment, and reducing energy consumption have become research hotspots in recent years. The optimal power flow (OPF) of the power system perfectly unifies the requirements of the power system for economy, safety and power quality. Therefore, it has been widely used in the field of power system optimization operation. [0003] The primal-dual interior point method (PD...

Claims

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Application Information

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IPC IPC(8): G06Q10/04G06Q50/06
CPCG06Q10/04G06Q50/06Y02E40/70Y04S10/50
Inventor 卫志农何天雨孙国强孙永辉高沁向育鹏李海欣
Owner HOHAI UNIV
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