Alternating current and direct current hybrid power flow calculation method and device, storage medium and terminal

A technology for AC/DC hybrid connection and power flow calculation, which is applied to measurement devices, circuit devices, AC network circuits, etc., and can solve problems such as poor convergence reliability of power flow calculation and ill-conditioned correction equation

Active Publication Date: 2019-07-05
SHANDONG UNIV +3
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] In view of the above existing problems, the embodiment of the present invention provides a method and device, storage medium and terminal for AC / DC hybrid power flow calculation, which can solve the technical problems of poor convergence reliability of power flow calculation and prone to ill-conditioned correction equations in the prior art

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  • Alternating current and direct current hybrid power flow calculation method and device, storage medium and terminal
  • Alternating current and direct current hybrid power flow calculation method and device, storage medium and terminal
  • Alternating current and direct current hybrid power flow calculation method and device, storage medium and terminal

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Embodiment Construction

[0107] The present invention will be further described in detail below with reference to the drawings and embodiments. It can be understood that the specific embodiments described here are only used to explain the present invention, but not to limit the present invention. In addition, it should be noted that, for ease of description, only a part of the structure related to the present invention is shown in the accompanying drawings instead of the entire structure.

[0108] The embodiment of the present invention provides a method for power flow calculation of the AC / DC hybrid power system, which is applicable to the case of performing power flow calculation for the AC / DC hybrid power system. The AC-DC hybrid tidal current calculation method provided by the embodiment of the present invention can be executed by an AC-DC hybrid tidal current calculation device, which can be implemented by software and / or hardware. figure 1 It is a flow chart of a method for AC-DC hybrid power flow...

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Abstract

Embodiments of the invention disclose an alternating current and direct current hybrid power flow calculation method and device, a storage medium and a terminal; the state calculation of a direct-current network is completed according to the control mode of a converter station, and the connection point of the direct-current network and an alternating-current network is equivalent to a power node;and power flow calculation is carried out by using a Newton-Raphson method. According to the embodiments of the invention, the problem of convergence reduction caused by alternating iteration of an alternating iteration method is overcome, and the problems of initial value selection and jacobian matrix scale expansion caused by a simultaneous solving method can be avoided; and the method has the dual advantages of high convergence and small memory occupied in an iterative process.

Description

[0001] The present invention claims the priority of the Chinese patent application filed with the Chinese Patent Office on September 07, 2018 with application number 201811045461.5. The entire content of the application is incorporated into the present invention by reference. Technical field [0002] The embodiments of the present invention relate to the technical field of power system power flow calculation, and in particular, to a method and device, storage medium and terminal for AC / DC hybrid power flow calculation. Background technique [0003] Power flow calculation is a basic calculation for studying the steady-state operation of power systems. The voltage and / or power flowing through each node in the transmission and distribution line from the generation of electricity to the consumption by the load can be obtained through power flow calculation. At present, the calculation methods for power flow of AC / DC hybrid power system mainly include alternating iteration method and s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J3/06H02J3/36
CPCH02J3/06H02J3/36H02J2203/20G01R21/1331H02J5/00H02J2203/10Y02E60/60G01R21/003
Inventor 李海峰陈庆董晓明杨明杨晓梅费益军金涛陈全刘昊汶
Owner SHANDONG UNIV
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