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Control method of air brake system of power generation motor

A technology for generating motors and control methods, which is applied to engine components, machines/engines, hydroelectric power generation, etc., and can solve the problems of shortening the inertial running time of shutdown and poor control ability of generator motors, so as to shorten the inertial running time, shorten downtime, The effect of avoiding catastrophic failure

Active Publication Date: 2020-10-30
STATE GRID CORP OF CHINA +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Aiming at the defects and problems existing in the existing equipment, the present invention provides a method for controlling the damper of the generator motor, which effectively solves the problem of poor control capability of the generator motor in the existing equipment, and can be used under various operating conditions of various units. Minimize the idle running time of the unit shutdown to ensure the safe operation of the thrust tile

Method used

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  • Control method of air brake system of power generation motor
  • Control method of air brake system of power generation motor
  • Control method of air brake system of power generation motor

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Embodiment 1

[0033] Embodiment 1: This embodiment aims to provide a method for controlling the wind brake system of a generator motor, which is used to brake the pumped storage unit. The wind brake system is an important auxiliary equipment for the generator motor of the pumped storage unit. It acts as a unit brake during shutdown, switching of working conditions, and unit creep monitoring and control, reducing the inertia running time of the unit, so as to protect the thrust bearing pad of the unit and shorten the downtime.

[0034] The present invention provides a control method for the air brake system in the transition of various working conditions of the unit and under abnormal conditions, including normal shutdown of the unit, shutdown of the mechanical accident, shutdown of the electrical accident, power failure of the water pump, pumping and forwarding of power, and abnormal bearing tile temperature , unit start-up, unit creep, high-speed damper abnormal input, etc., the damper cont...

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Abstract

The invention provides a control method of an air brake system of a power generation motor. The control method comprises an air brake control strategy and safety locking under the conditions of normalunit shutdown, mechanical accident shutdown, electrical accident shutdown, power failure of a water pump, conversion from water pumping to power generation, abnormal bearing bush temperature, unit starting, unit creeping, high-rotating-speed air brake abnormal input and the like, unit shutdown inert operation time can be shortened to the maximum under various operation conditions of various units, and safe operation of thrust pads is ensured, so that thrust bearing bushes of the units are protected, the shutdown time is shortened, the occurrence of malignant faults is avoided to the maximum,and the safety and the reliability of the air brake system are improved.

Description

technical field [0001] The invention belongs to the technical field of generator motors, and in particular relates to a control method for a wind brake system of generator motors. Background technique [0002] Pumped storage units have the characteristics of two-way rotating operation, high water head, high speed, and frequent start-up. In the power grid, they generally undertake tasks such as peak regulation, valley filling, frequency modulation, phase modulation, and emergency backup. The air brake system is an important auxiliary equipment for the generator motor of the pumped storage unit. It plays the role of unit braking during unit start-up, shutdown, working condition conversion and unit creep monitoring and control, reducing the inertia running time of the unit to protect the unit. Thrust bearing pads and reduced downtime. [0003] Malignant faults such as high-speed operation of the air brake and speed-up with the air brake occasionally occur, which may cause seri...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F03B15/00F03B15/02F03B11/00F03B13/06
CPCF03B11/008F03B13/06F03B15/00F03B15/02Y02E10/20Y02E60/16
Inventor 刘鹏龙吴小锋方书博马聖恒常东亮康晓义
Owner STATE GRID CORP OF CHINA
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