UPFC optimal configuration method based on DC power flow
A technology of DC power flow and optimized configuration, applied to AC networks with the same frequency from different sources, etc., can solve the problems of long construction time and high construction cost, and achieve the effects of adjusting line power flow distribution, improving power flow calculation, and improving economic costs.
Active Publication Date: 2020-03-06
WUHAN UNIV
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Problems solved by technology
As a basic means to reduce transmission pressure, power system expansion will involve new power plants and new transmission lines in key areas, with high construction costs and long construction time
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[0025] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention. In addition, the technical features involved in the various embodiments of the present invention described below can be combined with each other as long as they do not constitute a conflict with each other.
[0026] The invention provides a UPFC optimal configuration method based on DC power flow, which optimizes the installation capacity and installation position of the UPFC in the system, which is beneficial to adjust the power transmission capacity of the line and change the power distribution in the system so that the system can run efficiently.
[0027] figure 1 As shown, it is a schematic flow...
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The invention discloses a UPFC optimal configuration method based on DC power flow and belongs to the field of steady-state operation of a power system. Under the background of reducing the transmission pressure of the power system and optimizing the structure of a modern power system, the UPFC optimal configuration method based on DC power flow is provided. A UPFC device can adjust the line powerflow distribution in the power system and improve the economic cost of the system. The method model of the present invention is a UPFC optimal configuration mathematical model by using the economic cost of a generator as a objective function based on a constructed UPFC DC power flow model, and the nonlinear power flow equation of the model is processed by a Big-M method in order to convert a mixed integer nonlinear programming problem into a mixed integer linear programming problem suitable for more solvers, and optimize the installation position and capacity of the UPFC in the line. The model helps to adjust the line power transmission capacity and change the power distribution in the system so that the system runs efficiently.
Description
technical field [0001] The invention belongs to the field of steady-state operation of electric power systems, and more specifically relates to a UPFC optimal configuration method based on direct current flow. Background technique [0002] With the reorganization of the electricity market and the integration of renewable energy, the power industry is undergoing profound changes in technology, economics and organizational issues. The structure of the modern power system must be continuously optimized while taking into account the increasing power consumption, low predictability of power Widespread adoption of mobile and renewable energy sources has led to increased grid congestion. As a basic means to reduce transmission pressure, power system expansion will involve new power plants and new transmission lines in key areas, with high construction costs and long construction time. The proposal of Flexible Alternative Current Transmission Systems (FACTS) has greatly improved th...
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Login to View More IPC IPC(8): H02J3/06
CPCH02J3/06
Inventor 吴军刘畅陈俊锋郝露茜李保林徐剑冰甘佩莹周辉幸相渝
Owner WUHAN UNIV