Device and method for measuring generator subsynchronous oscillation modal signal

A subsynchronous oscillation, modal signal technology used in engine testing, machine/structural component testing, measuring devices, etc.

Active Publication Date: 2018-09-21
CHINA SHENHUA ENERGY CO LTD +4
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The purpose of the present invention is to provide a measuring device and method for generator subsynchronous oscillation mode signal, which is used to solve the problem of accurately determining the subsynchronous oscillation mode of generator

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  • Device and method for measuring generator subsynchronous oscillation modal signal
  • Device and method for measuring generator subsynchronous oscillation modal signal
  • Device and method for measuring generator subsynchronous oscillation modal signal

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Embodiment Construction

[0016] Specific embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings. It should be understood that the specific embodiments described here are only used to illustrate and explain the present invention, and are not intended to limit the present invention.

[0017] figure 1 It is the block diagram of the measuring equipment of generator subsynchronous oscillation modal signal provided by the present invention, as figure 1 As shown, the device includes a signal generator, a measuring device and a processing device. The signal generator is used to output the excitation signal, and the measuring device is used to measure the amplitude of the change of the generator speed. The processing device is connected with the signal generator and the measuring device, and acts on the generator through the properties of the excitation signal and the signal excited by the excitation signal. The magnitude of the resulting generato...

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Abstract

The invention relates to the technical field of subsynchronous oscillation modal signal measurement, and discloses a power generator subsynchronous oscillation modal signal measuring device and method. The device comprises a signal generator which is used for outputting an excitation signal; a measuring device which is used for measuring rotating speed change amplitude of a power generator; and a processing device which is connected with the signal generator and the measuring device and determines the attribute of a subsynchronous oscillation modal signal via the attribute of the excitation signal and the rotating speed change amplitude of the power generator generated after the signal excited by the excitation signal affects on the power generator. The attribute of the modal signal causing subsynchronous oscillation of the power generator can be determined via the corresponding relation between the excitation signal obtained after the excitation signal affects on the power generator and the generated shafting oscillation of the power generator so that any special equipment does not need to be additionally arranged in the whole process, operability is high, economic benefit is substantial, and thus the device has important meaning in solving a subsynchronous oscillation problem of a power plant and an electric network.

Description

technical field [0001] The invention relates to a measurement technology of a subsynchronous oscillation mode signal, in particular to a measurement device and method for a generator subsynchronous oscillation mode signal. Background technique [0002] Large-scale thermal steam turbine units play an important role in my country's power system. The shafting of high-power units has the characteristics of light weight and flexibility, multiple supports, large span, and high power density. The natural frequency spectrum of the shafting is relatively dense, so the induced The energy of the vibration is low. At the same time, with the development of power transmission and transformation to the direction of ultra-high voltage and long-distance and the adoption of a large number of series compensation on the AC transmission line, the subsynchronous oscillation of the generator set is becoming more and more serious. The shafting torsional vibration of the generator set It will stimulat...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01M15/00
Inventor 薛成勇侯小平卓华陈录范景利耿群鲁录义于洋丁雅丽
Owner CHINA SHENHUA ENERGY CO LTD
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