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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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Problems solved by technology

[0003] The invention provides a starting and excitation system and method of a gas turbine generating set to solve the technical problems of large installation space and high cost in the existing starting and excitation implementation methods

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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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Embodiment Construction

[0028] It should be noted that, in the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and examples.

[0029] refer to 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 arranged on a base 1, a speed reducer 3, a generator G and a separately excited DC motor XM. In this preferred embodiment, the generator G is a brushed generator, and the separately excited DC motor XM is a standard separately excited DC motor. The gas turbine 2 is coaxially installed and connected to the generator G through a speed reducer 3 . Separately excited DC motor XM is coaxially installed with generator G, and the rated speed is the same.

[0030] refer to figure 2 with image 3 , the starting and excitation system of th...

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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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