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Reservoir gate frequency converting control device

A frequency conversion control and monitoring device technology, applied in electrical program control, program control in sequence/logic controllers, water conservancy projects, etc., can solve problems such as inaccurate stop positions, soft mechanical characteristics, and small speed regulation range, and achieve Smooth start, reliable performance, small impact on motor and power supply

Inactive Publication Date: 2013-04-03
STATE GRID CORP OF CHINA +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Winding rotor asynchronous motor rotor series resistance speed regulation belongs to energy consumption type slip speed regulation, which has high energy consumption, soft mechanical characteristics, small speed regulation range and poor smoothness
At low speed, the mechanical characteristics are soft, resulting in inaccurate stop position and easy to cause safety accidents

Method used

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  • Reservoir gate frequency converting control device

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Experimental program
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Effect test

Embodiment Construction

[0012] Describe in detail below in conjunction with accompanying drawing and specific embodiment:

[0013] Such as figure 1 As shown, the frequency conversion control device for the reservoir gate includes a display screen monitoring device 1, a programmable controller PLC2 and a frequency conversion speed control device 3, and the display screen monitoring device 1 is connected to the programmable controller PLC2 and the frequency conversion speed control device 3 respectively , the display screen monitoring device 1 adopts a Siemens K-PT177B color touch screen, and the frequency conversion speed regulating device 3 adopts a MM440-45KW frequency converter.

[0014] The display screen monitoring device 1 is used to display various state quantities including gate opening, gate speed, inverter frequency, inverter current and opening and closing time, and is also used to set various parameters and their protection limits, such as performing Calibration of the upper and lower lim...

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Abstract

The invention discloses a reservoir gate frequency converting control device which relates to opening-closing control of a reservoir entering access door of an energy storage power station. The reservoir gate frequency converting control device comprises a display screen monitoring device (1), a programmable logic controller (PLG) (2) and a frequency control speed regulation device (3), the display screen monitoring device (1) adopts a Siemens K-PT177B type color touch screen, the frequency control speed regulation device (3) adopts an MM440-45KW type frequency changer, the display screen monitoring device (1) is used for displaying various state quantities including gate aperture, gate speed, frequency changer frequency, frequency changer current and opening-closing time, used for setting various parameters and protection limiting values of the parameters and further used for displaying alarm when exceeding the limiting values of the various parameters. The reservoir gate frequency converting control device is simple in structure and strong in function, adopts the color touch screen to operate, set, display and alarm, achieves smooth starting of a motor through the frequency changer and is high in safety.

Description

technical field [0001] The invention relates to the opening and closing control of the inspection door of the lower reservoir of an energy storage power station, in particular to a frequency conversion control device for the reservoir gate. Background technique [0002] In order to ensure that the water from the lower reservoir can be cut off during maintenance, the pumped storage power station has specially set up a maintenance gate for each diversion tunnel. The gate is opened and closed in still water under normal conditions, and the gate is a plane steel gate. The fixed hoist in the gate control room of the lower storehouse is responsible for the gate opening and closing. Under normal circumstances, it is braked by the working brake of the hoist and fixed on the maintenance platform of the gate shaft with a mechanical lock. When the door needs to be closed for maintenance, the hoist can be operated in the hoist room, and the operator will manually withdraw the mechanica...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G05B19/05E02B7/20
Inventor 肖仁军刘传东付伟王洪博赵路明周坤
Owner STATE GRID CORP OF CHINA
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