Loss measurement system of flexible DC converter valve power module

A power module, flexible DC technology, applied in dielectric performance measurement, measurement of electricity, measurement devices, etc., can solve the problems of electrical measurement accuracy easily affected by measurement instruments, inability to measure air dielectric loss, and inability to obtain all losses, etc. , to achieve the effects of controllable measurement, high accuracy and improved measurement efficiency

Inactive Publication Date: 2019-11-05
ELECTRIC POWER RESEARCH INSTITUTE, CHINA SOUTHERN POWER GRID CO LTD +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] The double-pulse method can only measure the switching loss of the device through the test, and cannot obtain the full loss; the accuracy of the electrical measurement method is easily affected by the measuring instrument; The loss taken away by the air medium, the measurement is not accurate enough

Method used

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  • Loss measurement system of flexible DC converter valve power module
  • Loss measurement system of flexible DC converter valve power module
  • Loss measurement system of flexible DC converter valve power module

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Embodiment Construction

[0028] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, but not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0029] see figure 1 , is a schematic flowchart of a power module loss measurement system for a flexible DC converter valve provided in Embodiment 1 of the present invention, including: a thermal insulation box 1, an in-box temperature measurement module 2 arranged in the thermal insulation box 1, a heater 3, a water cooling Module 4, water inlet temperature measurement module 5 arranged on water cooling module 4, outlet water temperat...

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Abstract

The invention discloses a loss measurement system of a flexible DC converter valve power module. The system comprises a heat insulation box, a temperature measurement module, a heater, a water coolingmodule, an inlet water temperature measuring module, an outlet water temperature measuring module, an air inlet module, an inlet air temperature measuring module, an air outlet module and an outlet air temperature measuring module; the temperature measurement module, the heater and the water cooling module are arranged in the heat insulation box, the inlet water temperature measuring module and the outlet water temperature measuring module are arranged in the water cooling module, the inlet air temperature measuring module is arranged in the air inlet module, and the outlet air temperature measuring module is arranged in the air outlet module; the heater is used to heat the internal of the heat insulation box; the water cooling device is used to carry out water cooling on a measured powermodule arranged in the heat insulation box; and the wall of the heat insulation box is provided with an air inlet and an air outlet connected with the air inlet module and the air outlet module respectively. The system can obtain a more accurate loss measurement result via a simpler measurement structure, and the measuring efficiency is improved.

Description

technical field [0001] The invention relates to the technical field of flexible direct current power transmission, in particular to a loss measurement system of a flexible direct current converter valve power module. Background technique [0002] Compared with the traditional high-voltage direct current transmission technology, flexible direct current transmission is a new type of direct current transmission mode with more flexible control and less harmonics. system. With the development of power electronic devices and the promotion of renewable energy power generation technologies such as wind and solar energy, flexible DC transmission technology has been rapidly developed and applied in the fields of new energy grid connection, island power supply, and asynchronous networking at home and abroad. [0003] In the flexible DC transmission system, the loss of the flexible DC converter valve is higher than that of the conventional DC converter valve, but there is still room fo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R31/00G01R27/26
CPCG01R27/2694G01R31/00
Inventor 熊岩饶宏李岩许树楷朱喆周月宾
Owner ELECTRIC POWER RESEARCH INSTITUTE, CHINA SOUTHERN POWER GRID CO LTD
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