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Control method of high-pressure oil jacking system of power generator motor

A technology of generator motor and control method, which is applied in the directions of engine components, machines/engines, hydropower generation, etc., can solve the problem that the safe operation of thrust pads cannot be guaranteed to the maximum extent, and achieve the effect of shortening downtime and ensuring safe operation.

Active Publication Date: 2017-07-21
STATE GRID CORP OF CHINA +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The conventional control strategy is generally to switch the main pump to the backup pump in case of failure, and the control logic cannot guarantee the safe operation of the thrust tile to the maximum extent.

Method used

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  • Control method of high-pressure oil jacking system of power generator motor
  • Control method of high-pressure oil jacking system of power generator motor
  • Control method of high-pressure oil jacking system of power generator motor

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0020] Embodiment: The present invention provides a control strategy for the high-pressure oil jacking system that can take into account various situations. When the controller of the unit local control unit (LCU) is normal, the controller of the unit local control unit (LCU) can When abnormal, when the speed measuring device is normal, when the speed measuring device is abnormal, etc., the safe operation of the thrust tile is guaranteed to the maximum extent.

[0021] The generator motor high-voltage oil jacking system is redundantly equipped with two high-pressure oil injection pumps, one AC pump and one DC pump, and adopts the operation mode of AC pump as main and DC pump as backup.

[0022] Control Method:

[0023] 1. When the local control unit (LCU) controller of the unit is normal:

[0024] (1) When the unit is started, the DC standby pump test is performed first. After the DC standby pump test runs normally, stop the DC pump and start the AC pump. The test of the DC ...

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PUM

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Abstract

The invention discloses a control method of a high-pressure oil jacking system of a power generator motor. The control method comprises a power generation motor unit and an unit local control unit controller (LCU); the high-pressure oil jacking system of the power generator motor is redundantly configured with two high-pressure oil injecting pumps, one alternating-current pump and one direct-current standby pump; and an operating mode of mainly using the alternating-current pump and assisting by the direct-current standby pump is adopted. The invention provides a control policy of the high-pressure oil jacking system under various conditions, and can guarantee the operation safety of a thrust tile to the greatest extent under such conditions as normal unit local control unit controller (LCU), abnormal controller of the power generation unit local control unit (LCU), normal speed measuring device and abnormal speed measuring device.

Description

technical field [0001] The invention relates to the field of generator auxiliary equipment control of a pumped storage power station, in particular to a control method for a high-voltage oil jacking system of a generator motor. Background technique [0002] During the power generation process of the pumped storage power station, the high-voltage oil jacking system of the generator motor is an important auxiliary equipment for the generator. During the low-speed operation stage of the generator motor unit, an oil film is established between the thrust bearing shoe and the mirror plate to prevent the thrust shoe from Dry friction with the mirror plate will burn the tiles to ensure the safe operation of the thrust tiles. [0003] Due to its importance, the generator motor high-pressure oil jacking system usually has two redundant high-pressure oil injection pumps. Adopt a working method of one master and one backup. The conventional control strategy is generally to switch the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F03B15/00F03B11/00F03B11/06F03B13/06
CPCF03B11/008F03B11/06F03B13/06F03B15/00Y02E10/20Y02E60/16
Inventor 刘鹏龙马聖恒吴小锋康晓义付东成方书博张红方栗庆龙
Owner STATE GRID CORP OF CHINA