Flexible multi-state switch reliability modeling method with consideration to voltage load sharing mechanism

A sharing mechanism and modeling method technology, applied in the direction of circuit devices, AC network circuits, single-network parallel feeding arrangements, etc., can solve problems such as unreached, conservative reliability calculation results, etc.

Active Publication Date: 2018-10-02
NORTH CHINA ELECTRIC POWER UNIV (BAODING)
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Problems solved by technology

However, in previous studies, the failure rate of the SM sub-module is usually taken as a constant, that is, the failure rate of the SM sub-module under rated conditions is used for calculation, but the working status of the SM sub-module is constantly changing during actual operation, and usually does not reach the rated value. o

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  • Flexible multi-state switch reliability modeling method with consideration to voltage load sharing mechanism
  • Flexible multi-state switch reliability modeling method with consideration to voltage load sharing mechanism
  • Flexible multi-state switch reliability modeling method with consideration to voltage load sharing mechanism

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[0070] In order to make the objectives, technical solutions and advantages of the present invention clearer, the technical solutions in the embodiments of the present invention will be described in more detail below in conjunction with the drawings in the embodiments of the present invention. In the drawings, the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The described embodiments are some, but not all, embodiments of the invention. The embodiments described below by referring to the figures are exemplary and are intended to explain the present invention and should not be construed as limiting 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.

[0071] The reliability modeling method of flexible multi-state switch...

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Abstract

The invention discloses a flexible multi-state switch reliability modeling method with the consideration to a voltage load sharing mechanism, and the method is characterized in that the method comprises the following steps: 1, constructing a single-end MMC physical structure reliability model; 2, building a bridge arm state-dependent reliability model based on the voltage load sharing mechanism; 3, building an eight-state reliability model of a flexible multi-state switch.

Description

technical field [0001] The invention relates to the technical field of reliability modeling of power system components, in particular to a reliability modeling method of a flexible multi-state switch considering a voltage load sharing mechanism. Background technique [0002] The flexible multi-state switch is a kind of power electronic equipment, which can realize the flexible control of the power flow when applied to the distribution network, so as to effectively balance the grid load and promote the consumption of renewable energy, and when the distribution network fails, the flexible multi-state switch The switch can realize uninterrupted power supply in non-faulty areas by switching the control mode, and improve the reliability of power supply in the distribution network. On the one hand, with the development of smart distribution network, the role of flexible multi-state switches in distribution network is becoming more and more significant, and the reliability of its e...

Claims

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Application Information

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IPC IPC(8): H02J3/38
CPCH02J3/38H02J2203/20
Inventor 刘文霞徐雅惠刘鑫杨粤李征洲
Owner NORTH CHINA ELECTRIC POWER UNIV (BAODING)
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