IPFC-containing power system power flow optimization method based on MISOCP

An optimization method and power system technology, applied in design optimization/simulation, AC networks with the same frequency from different sources, electrical components, etc., can solve problems such as strong non-convexity

Active Publication Date: 2021-02-23
STATE GRID JIANGSU ECONOMIC RES INST +3
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Problems solved by technology

However, the inequality constraints (such as capacity constraints) of this model still take the amplitude and phase angle of the equivalent voltage source as variables, and there is also a strong non-convexity. Whether it is solved by the type I method or the type II method, there are local The hidden danger of the optimal solution

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  • IPFC-containing power system power flow optimization method based on MISOCP
  • IPFC-containing power system power flow optimization method based on MISOCP
  • IPFC-containing power system power flow optimization method based on MISOCP

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[0064] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0065] In describing the present invention, it is to be understood that the terms "opening", "upper", "lower", "thickness", "top", "middle", "length", "inner", "surrounding" etc. Indicating orientation or positional relationship is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the components or elements referred to must have a specific orientation, be constructed and operated in a sp...

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Abstract

The invention discloses an IPFC-containing power system power flow optimization method based on MISOCP. The method comprises the following steps: S1, carrying out mathematical deformation and variablesubstitution of an IPFC conventional injection model, and building an IPFC model; S2, carrying out IPFC equality constraint convexity processing; S3, carrying out IPFC inequality constraint convexityprocessing; S4, adding a convex IPFC constraint into a linearized power flow optimization model; S5, carrying out MATLAB/GUROBI optimization calculation; and S6, according to an optimization result,obtaining an amplitude and a phase angle of an output voltage of the converter through reverse derivation. According to the IPFC-containing power system power flow optimization method based on the MISOCP, by utilizing mathematical deformation, approximate processing and binary expansion technologies, the convexity processing of an IPFC model is realized, a highly non-convex nonlinear optimizationproblem is converted into the MISOCP model, the model is high in solving speed, and a solution has global optimality. The method can accurately, efficiently and quickly complete the calculation of thepower flow optimization of the power system, is higher in practical value, and can provide theoretical and technical support for the online optimization and regulation of comprehensive FACTS.

Description

technical field [0001] The invention belongs to the field of power system operation control and optimal scheduling, and in particular relates to a MISOCP-based power flow optimization method for power systems containing IPFC. Background technique [0002] With the continuous development of science and technology, in the field of power system planning and control, the problem of optimal power flow (OPF) has frequently received attention. The so-called OPF refers to the use of controllable measures to adjust the corresponding parameters of the system under the precondition of satisfying the normal operation constraints of the system, so that the system can reach the best operating state. Since the economic and security aspects of the system can be integrated into a mathematical model, this type of problem can be applied to the safe operation of the power system, economic dispatch, power grid planning, etc. The interline power flow controller (IPFC) is one of the most powerful...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J3/06G06F30/20
CPCH02J3/06G06F30/20H02J2203/20H02J2203/10
Inventor 祁万春吴熙王瑞蔡晖彭竹弈赵菲菲许偲轩王亮黄成辰张文嘉孙文涛
Owner STATE GRID JIANGSU ECONOMIC RES INST
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