Start-up and excitation system of gas turbine generator set, method

A technology for gas turbines and generator sets, which is applied to the control of generators, control of generators through magnetic field changes, and control systems. cost effect

Active Publication Date: 2019-01-25
AVIC PST NANFANG GAS TURBINE COMPLETE MFG & INSTALLATION
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  • Abstract
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  • Application Information

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Problems solved by technology

[0003] The invention provides a starting and excitation system and method of a gas turbine generating set to solve the te

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  • Start-up and excitation system of gas turbine generator set, method
  • Start-up and excitation system of gas turbine generator set, method
  • Start-up and excitation system of gas turbine generator set, method

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[0028] It should be noted that the embodiments in the application and the features in the embodiments can be combined with each other if there is no conflict. Hereinafter, the present invention will be described in detail with reference to the drawings and in conjunction with the embodiments.

[0029] Reference figure 1 The gas turbine generator set of the present invention is a small gas turbine generator set, which as a whole includes a gas turbine 2, a reducer 3, a generator G and a separately excited DC motor XM arranged on the base 1. In this preferred embodiment, the generator G uses a brushed generator, and the separately excited DC motor XM uses a standard separately excited DC motor. The gas turbine 2 is coaxially installed and connected with the generator G through the reducer 3. Separately excited DC motor XM and generator G are installed coaxially with the same rated speed.

[0030] Reference figure 2 with image 3 The starting and excitation system of the gas turbi...

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Abstract

The invention discloses a startup and excitation system of a gas turbine generator set. A DC switching power supply connected to an excitation winding of the DC motor through a first contactor for supplying an excitation current to the DC motor during startup of the unit; A startup control module connected to the main winding of the DC motor through a second contactor for supplying a startup current to the DC motor during startup of the unit; An output end of the automatic excitation device is connected to an excitation winding of the DC motor through a first contactor for supplying excitationto the DC motor after the start-up of the unit is completed. The main winding of the separately excited DC motor is connected with the excitation winding of the generator through the normally open main contact of the third contactor, Also connected to the input of the automatic excitation device through a second contactor is a separately excited DC motor for supplying an excitation current to thegenerator as an exciter after the start-up of the unit and for supplying a power supply to the automatic excitation device.

Description

technical field [0001] The invention relates to the field of gas turbines, in particular to a starting and excitation system of a gas turbine generating set. In addition, the invention also relates to a starting and excitation method of a gas turbine generating set. Background technique [0002] In the existing small gas turbine generator sets, the starting system and the excitation system are two independent systems. Generally, an AC asynchronous motor is used as the starting motor. The starting system is responsible for the cold running and starting of the unit, and the excitation system is responsible for the completion of the unit starting to reach the rated speed. Then provide excitation to the generator. This method of starting and excitation requires a large installation space and high cost. Contents of the invention [0003] The invention provides a starting and excitation system and method of a gas turbine generating set to solve the technical problems of large ...

Claims

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Application Information

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IPC IPC(8): H02P9/08H02P9/14H02P101/25
CPCH02P9/08H02P9/14H02P2101/25
Inventor 叶汉武邹红梅谢冬俊王嗣庆朱亚逸
Owner AVIC PST NANFANG GAS TURBINE COMPLETE MFG & INSTALLATION
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