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Dual power cabinet dynamic voltage detection system and method

A dynamic voltage and power cabinet technology, applied in the direction of measuring only voltage, voltage/current isolation, measuring current/voltage, etc., can solve the position recognition system deviation, affect the safe and stable operation of the finishing mill, and the detection technology has poor anti-interference ability, etc. problems, to achieve the effect of achieving continuity and long-term safe and stable operation

Pending Publication Date: 2022-01-28
YANGCHUN NEW STEEL CO LTD
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  • Abstract
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  • Application Information

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Problems solved by technology

[0003] The entire finishing rolling 6000KW synchronous motor load commutation inverter consists of control cabinet A500, system 1 rectifier cabinet A111, system 1 inverter cabinet A112, reactance current sharing cabinet A200, system 2 rectifier cabinet A111, system 2 inverter cabinet A112, excitation The above six control subsystems of the whole system are closely related to the dynamic voltage detection of the dual power cabinet, because the dynamic voltage detection of the dual power cabinet is directly related to the detection of the rotor position and the precise quantification and identification of the initial positioning, but the original detection The technical anti-interference ability is poor, the degree of precise quantification and the accuracy of rotor position conversion are poor, which leads to deviations in the position recognition system and affects the safe and stable operation of the entire finishing rolling unit. Therefore, the present invention proposes a dynamic voltage detection method for dual power cabinets. System and method to solve the problems existing in the prior art

Method used

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  • Dual power cabinet dynamic voltage detection system and method
  • Dual power cabinet dynamic voltage detection system and method

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Embodiment 1

[0031] according to figure 1As shown, this embodiment proposes a system for dynamic voltage detection of dual power cabinets, including a power control unit, a high-frequency conversion unit, a surge isolation unit, a voltage vector acquisition unit, and a photoelectric conversion transmission unit. The power control unit uses To implement precise and non-interference control on the power supply system while maintaining the continuity of the entire power supply system; the high-frequency conversion unit is used to convert the power supply frequency and smooth out the interference output, and perform vector acquisition through frequency high-frequency conversion High speed and data accuracy; the surge isolation unit is used for surge isolation and surge absorption of drive signals and transmission signals, and eliminates interference and disturbance of external environmental factors on signals;

[0032] The voltage vector acquisition unit is used to convert the electrical signa...

Embodiment 2

[0039] according to figure 2 As shown, this embodiment proposes a method for dynamic voltage detection of dual power cabinets, including the following steps:

[0040] Step 1: Start the power supply control unit, supply power to the DC rectifier device through the AC power supply of the power cabinet of the high and low voltage room, and carry out visual identification and substantive inspection of the two-phase electric sequence;

[0041] Step 2: The DC rectification device outputs 24V DC power after internal programming calculation and conversion of related components, and the positive and negative phases of the 24V DC power supply are respectively output to the 60KHZ high-frequency power supply unit;

[0042] Step 3: Start the high-frequency conversion unit, use the 60KHZ high-frequency power supply unit to perform programmed calculations, transmit internal components, and output combined logic operations. The 60KHZ high-frequency power supply unit outputs high-frequency el...

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Abstract

The invention provides a dual-power cabinet dynamic voltage detection system and method and relates to the technical field of steel production. The system comprises a power supply control unit, a high-frequency conversion unit, a surge isolation unit, a voltage vector collection unit and a photoelectric conversion transmission unit, wherein the power supply control unit is used for carrying out precise and interference free control of a power supply system, and continuity of the whole power supply system is maintained; the high-frequency conversion unit is used for carrying out conversion and flat wave filtering output on power supply frequency, and carrying out high-speed vector acquisition and data accuracy through frequency high-frequency conversion. According to the system, dynamic voltage detection of a dual-power cabinet can be accurately quantified without deviation, so interference-free and deviation-free detection of the synchronous position and a synchronous induction angle is further realized, accuracy and no deviation of the electric sequence are ensured when a finishing mill group is started, rotation deviation and rotation degradation of related transmission components of the finishing mill are not caused, and therefore, long-period safe and stable operation of a finish rolling system and a finish rolling unit is realized.

Description

technical field [0001] The invention relates to the technical field of iron and steel production, in particular to a system and method for dynamic voltage detection of dual power cabinets. Background technique [0002] The dynamic voltage detection of the double power cabinet in the rolling mill is very important, which is directly related to the safe and stable operation of the load commutation inverter of the 6000KW synchronous motor in the finishing rolling. The stable operation of the entire control system and the orderly and quantitative connection of each control part; [0003] The entire finishing rolling 6000KW synchronous motor load commutation inverter consists of control cabinet A500, system 1 rectifier cabinet A111, system 1 inverter cabinet A112, reactance current sharing cabinet A200, system 2 rectifier cabinet A111, system 2 inverter cabinet A112, excitation The above six control subsystems of the whole system are closely related to the dynamic voltage detect...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R19/00G01R15/14
CPCG01R19/0084G01R15/14
Inventor 朱春韶朱国俊马东浩刘逖王鑫桂立波刘晓明高耀
Owner YANGCHUN NEW STEEL CO LTD
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