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Frequency converter control cabinet in mutual backup automatic switching mode realized by utilizing hard logic

A frequency converter control and logic control unit technology, applied in the field of electric power, can solve the problems of tail gas stagnation, easy to cause serious accidents, wrong switching, etc., to achieve the effect of increasing seismic performance, ensuring normal operation, and simple structure

Active Publication Date: 2020-04-17
ZHEJIANG JAROL SCI INSTR CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Because of its good starting performance, speed regulation performance and energy-saving effect, it has become the current popularized power drag method. The exhaust fan in the nuclear power plant is often connected with the control cabinet with the frequency conversion cabinet, and the control cabinet is used to control the exhaust fan. To ensure the normal operation of the exhaust fan of the nuclear power plant, the existing control cabinet is equipped with a backup self-switching module to deal with the failure of some exhaust fans, resulting in the occurrence of tail gas retention. However, in actual use, the backup self-switching module may be In the case of bug switching by mistake, switching the normal running fan or switching the normal fan to the faulty fan may easily cause serious accidents under certain conditions. inverter control cabinet

Method used

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  • Frequency converter control cabinet in mutual backup automatic switching mode realized by utilizing hard logic
  • Frequency converter control cabinet in mutual backup automatic switching mode realized by utilizing hard logic
  • Frequency converter control cabinet in mutual backup automatic switching mode realized by utilizing hard logic

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Embodiment Construction

[0021] Referring to the accompanying drawings, the present invention uses hard logic to realize a frequency converter control cabinet with mutual backup and self-switching mode, including a main control cabinet 1 and an on-site cabinet 2, and between the main control cabinet 1 and the on-site cabinet 2 is an electric Sexual connection, the front of the main control cabinet 1 is provided with a main control cabinet door 3, the inside of the main control cabinet 1 is provided with an installation vertical bar 4, and the installation vertical bar 4 is provided with several installation beams 5, so A first logic control unit 6 and a first logic control unit 7 are arranged on the uppermost installation beam 5, the first logic control unit 7 is located on the left side of the first logic control unit 6, and the first logic control unit 6 and the mounting beam 5 below the first logic control unit 7 are provided with a transformer 8 and a circuit switch 9 in turn, the front of the on-s...

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Abstract

The invention discloses a frequency converter control cabinet in a mutual backup automatic switching mode realized by utilizing hard logic. The frequency converter control cabinet comprises a main control cabinet and a local cabinet. The main control cabinet is electrically connected with the local cabinet, and the local cabinet is connected to a first exhaust fan and a second exhaust fan. Compared with the prior art, the frequency converter control cabinet is simple in structure and reasonable in design, the mutual backup automatic switching is achieved through the hard logic, the control isvery reliable, the situation of program bug mistaken switching is avoided, and mistaken switching is eliminated fundamentally.

Description

【Technical field】 [0001] The invention relates to the field of electric power technology, in particular to a frequency converter control cabinet in a mutual backup and automatic switching mode realized by hard logic. 【Background technique】 [0002] The frequency conversion cabinet is a control cabinet that uses a frequency converter to drive the power unit. Because of its good starting performance, speed regulation performance and energy-saving effect, it has become the current popularized power drag method. The exhaust fan in the nuclear power plant is often connected with the control cabinet with the frequency conversion cabinet, and the control cabinet is used to control the exhaust fan. To ensure the normal operation of the exhaust fan of the nuclear power plant, the existing control cabinet is equipped with a backup self-switching module to deal with the failure of some exhaust fans, resulting in the occurrence of tail gas retention. However, in actual use, the backup s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H05K7/20F16F15/04
CPCF16F15/04H05K7/20
Inventor 潘峰富勤飞肖海乐王晨辉王建军高加基李嘉渊张晓丽石明兴
Owner ZHEJIANG JAROL SCI INSTR CO LTD
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