Parallel variable frequency power supply for high power and high voltage test

A variable frequency power supply and high-voltage test technology, applied in the field of power systems, can solve the problems of misdecoding of the main variable frequency power supply controller and the inability to achieve remedial operation of the variable frequency power supply, achieve power and capacity improvement, and meet high-power withstand voltage tests, capacity and The effect of power boost
CN102983754AActive Publication Date: 2013-03-20上海思源光电有限公司
8 Cites 10 Cited by

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
上海思源光电有限公司
Publication Date
2013-03-20

Smart Images

  • Figure 1
    Figure 1
  • Figure 2
    Figure 2
  • Figure 3
    Figure 3
Patent Text Reader

Abstract

The invention discloses a parallel variable frequency power supply for a high power and high voltage test, and belongs to the technical field of electric systems. The parallel variable frequency power supply comprises two or more parallel variable frequency power supply parts with current limiting reactors. The parallel variable frequency power supply solves the problem that a main variable frequency power supply controller decodes falsely due to the fact that the signal transmission quantity of optical fiber communication is large when two or more power supplies run in parallel; the parallel variable frequency power supply ensures that asynchronism of output voltage of the parallel variable frequency power supplies is controlled within 1 microsecond; the output synchronism of the variable frequency power supplies is improved; and circular current of output among the power supply parts is realized. In addition, as guard signals are arranged among a main variable frequency power supply and slave variable frequency power supplies, the deficiency in the prior art that when remedial operation cannot be conducted when the variable frequency power supplies fail is overcome.
Need to check novelty before this filing date? Find Prior Art

Description

technical field

[0001] The present invention relates to a device in the field of power system technology, specifically a dual-machine parallel connection, which can be used for on-site AC withstand voltage test of GIS below 1000kV voltage level, non-partial discharge test of main transformer below 500kV voltage level, and long-distance No partial discharge variable frequency power supply for AC withstand voltage test of cables. Background technique

[0002] With the rapid development of the national economy, the voltage level of power transmission is getting higher and higher, and its capacity is getting bigger and bigger. Therefore, higher requirements are put forward for the reliability of power transmission and distribution equipment and transmission cables, and they are also communicated. The capacity and power of the variable frequency power supply used in the withstand voltage test put forward higher requirements.

[0003] At present, the capacity of a single variable...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More