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Pump storage plant generator/ motor stator transient time constant test method

A pumped storage power station, generator stator technology, applied in the direction of motor generator testing, etc., can solve the problem of rotor circuit danger, etc., achieve the effect of simple test method and save test cost

Active Publication Date: 2010-03-24
ELECTRIC POWER RESEARCH INSTITUTE OF STATE GRID SHANDONG ELECTRIC POWER COMPANY +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The test itself brings additional and potential dangers to the large-capacity thyristor rectifier cabinet and the excitation transformer of the generator excitation system, and the disassembly, assembly and transformation of the rotor circuit of the motor also causes potential dangers to the rotor circuit

Method used

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  • Pump storage plant generator/ motor stator transient time constant test method
  • Pump storage plant generator/ motor stator transient time constant test method

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Embodiment Construction

[0017] The present invention will be further described below in conjunction with embodiment.

[0018] figure 1 , figure 2 It is the test result of Unit 2 of Tai'an Taishan Pumped Storage Power Station:

[0019] The method of the present invention for testing the stator open-circuit transient time constant and the stator short-circuit transient time constant of the generator / motor of the pumped-storage unit does not involve all the technical performance parameters of the generator / motor, but is only used to test the generator / motor. Stator open-circuit transient time constant, stator short-circuit transient time constant, the specific process is:

[0020] 1) Directly intercept and control the control value of the exciting silicon controlled rectifier, so that the rotor voltage of the generator generates a step;

[0021] 2) In the stable time period after the rotor voltage step is generated, the interpolation algorithm is used to calculate the open circuit and short circuit ...

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Abstract

The invention discloses a pumped storage station generating electricity / motor stator transient time constant testing method, with advantages: saving the test cost, reducing the tested machine risk andreducing the work load. The method comprises the following steps: 1) directly capturing and controlling the controlling quantity of the excitation silicon controlled rectifier to generate a stepped amount of the generator rotor voltage; 2) calculating the open circuit, short circuit transient time constant using interpolation algorithm during the stable time after rotor voltage stepping, whereinthe open circuit, short circuit transient time constant is 2e-t1 / T-e-t2 / T=1.

Description

technical field [0001] The invention relates to a test method for testing technical performance parameters of a large-scale power generation / motor, in particular to a test method for a transient time constant of a pumped storage power station power generation / motor stator. Background technique [0002] With the development of the power industry, the capacity and coverage of the power grid are rapidly expanding, and problems such as power grid peak regulation, emergency backup and black start are becoming more and more prominent. my country's economic development and the geographical distribution of hydropower resources are very unbalanced, which brings greater peak-shaving difficulties to the power grid in the eastern region where hydropower resources are scarce. Building a pumped storage power station is an economical and efficient way to solve the above problems. In addition, the construction of nuclear power units also requires the cooperation of pumped storage power pla...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01R31/34
Inventor 张维超谢峰
Owner ELECTRIC POWER RESEARCH INSTITUTE OF STATE GRID SHANDONG ELECTRIC POWER COMPANY