Flexible multi-state switching device based on turn-off power electronic switching device

A technology for power electronic devices and switching devices, which is applied in the field of intelligent equipment, can solve the problem of high voltage requirements for accessible equipment, and achieve the effect of improving power flow characteristics and power quality of distribution networks.

Pending Publication Date: 2020-03-27
ELECTRIC POWER SCI & RES INST OF STATE GRID TIANJIN ELECTRIC POWER CO +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to overcome the deficiencies of the prior art, propose a flexible multi-state switch device based on power electronic switching devices that can be turned off, and solve the technical problem that the existing flexible multi-state switch requires high voltage for the connected equipment

Method used

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  • Flexible multi-state switching device based on turn-off power electronic switching device

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Embodiment Construction

[0013] Embodiments of the present invention are described in further detail below in conjunction with the accompanying drawings:

[0014] A flexible multi-state switching device based on turn-off power electronic devices, such as figure 1 As shown, it includes DC positive and negative bus bars, a control module, a DC voltage / current measurement module, an AC voltage / current measurement module, and a communication module, multiple AC / DC conversion modules and DC / DC conversion modules;

[0015] The DC positive and negative bus bars are connected to the DC interface module through the DC / DC conversion module to realize the conversion of the DC voltage level; the DC positive and negative bus bars are also connected to the AC interface module through the AC / DC conversion module to use To realize the conversion of DC power and AC power energy; the DC positive and negative busbars are also connected to the AC interface module through the DC / DC conversion module and the AC / DC conversi...

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Abstract

The invention relates to a flexible multi-state switching device based on a turn-off power electronic device. The flexible multi-state switching device is characterized by comprising a direct-currentpositive and negative bus, a control module, a direct-current voltage/current measurement module, an alternating-current voltage/current measurement module, a communication module, a plurality of AC/DC conversion modules and a DC/DC conversion module. According to the invention, the control of an electric energy flow and the fusion of an information flow are realized, the loop closing operation ofa power distribution network of the same voltage level and different voltage levels is realized, the access of the direct-current electric devices and direct-current power supplies with different voltage levels is realized, and the power flow characteristic and the electric energy quality of the power distribution network can be further improved.

Description

technical field [0001] The invention belongs to the technical field of intelligent equipment, and relates to a flexible multi-state switch, in particular to a flexible multi-state switch device based on a power electronic switch device that can be turned off. Background technique [0002] The distribution network is at the end of the power system, directly facing the power users, and undertakes the important task of distributing electric energy and serving customers. At present, the construction of the distribution network is lagging behind, the structure is unreasonable, and the means of regulation are limited, which restricts the flexibility of the operation and control of the distribution network, and causes problems such as unbalanced feeder load and long power supply recovery time. On the other hand, new energy sources such as photovoltaic power generation, wind power generation, and fuel cells are booming, but these new energy sources are intermittent and regional. Ce...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J3/00H02J3/02
CPCH02J3/00H02J3/02
Inventor 崇志强陈培育马世乾于光耀李国栋时燕新霍现旭王旭东徐科郭悦吕金炳吴磊王峥戚艳王天昊刘云刘亚丽杨邦宇李振斌郑卫红
Owner ELECTRIC POWER SCI & RES INST OF STATE GRID TIANJIN ELECTRIC POWER CO
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