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A hydroelectric generating set starting process stability state evaluation method

A hydroelectric unit, state evaluation technology, applied in the direction of motor generator testing, measuring electricity, measuring electrical variables, etc., can solve problems such as complex fault mechanisms

Active Publication Date: 2019-04-23
STATE GRID ZHEJIANG ELECTRIC POWER +1
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Various types of failures may occur during the operation of hydropower units, and the failure mechanism is complex

Method used

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  • A hydroelectric generating set starting process stability state evaluation method
  • A hydroelectric generating set starting process stability state evaluation method
  • A hydroelectric generating set starting process stability state evaluation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0052] Embodiment: A method for evaluating the stability state of a hydroelectric unit in the start-up process of this embodiment. The hydroelectric unit in the embodiment is a mixed-flow power station unit, and the unit parameters are shown in Table 1.

[0053] Turbine type

Rated speed(r / min)

Rated water head (m)

Current operating water head (m)

HLD333C-LJ-485

150

107

108

[0054] Table I

[0055] Such as figure 1 shown, including the following steps:

[0056] S1: Perform real-time stability monitoring on hydroelectric units working at different water heads, and obtain healthy samples of hydroelectric units working at different water heads during the normal start-up process. The healthy samples include working condition parameter data and 19 types of stability parameter data, as shown in the table II shows,

[0057] serial number

parameter name

Number of measuring points

signal source

1

Upper guide be...

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Abstract

The invention discloses a hydroelectric generating set starting process stability state evaluation method. The method comprises the steps of S1 obtaining the health samples of hydroelectric generatingsets working at different water heads in the normal starting process, wherein the health samples comprise working condition parameter data and N types of stability parameter data; S2 dividing workingwater head intervals of the hydroelectric generating set, and arranging health samples of the normal starting process of the hydroelectric generating set in each water head interval according to eachwater head interval; S3 extracting health samples in each water head interval, and drawing a stability parameter peak-to-peak health region corresponding to each type of stability parameters in eachwater head interval; and S4 monitoring the starting process of the hydroelectric generating set to be evaluated in real time, and calculating the overall stability state evaluation index of the starting process of the hydroelectric generating set to be evaluated. According to the method, the starting process of the hydroelectric generating set can be effectively monitored, and the stable state degree of the starting process of the set is quantitatively evaluated, so that the stable operation of the set is guaranteed, and the guidance suggestions are provided for stable operation of the starting process of the hydroelectric generating set.

Description

technical field [0001] The invention relates to the technical field of evaluation state of hydroelectric unit operation, in particular to a method for evaluating the stability state of a hydroelectric unit during start-up. Background technique [0002] With the improvement of manufacturing level and the progress of automation control technology, the Francis hydroelectric generating set presents a development trend of large size, high efficiency and intelligence. More and more attention has been paid to the level of unit operation stability. [0003] The unit operation stability parameters monitored by the state monitoring system of the hydro-generator set required by the industry standard include vibration, swing and pressure pulsation, etc., which are used to reflect the operation stability level of the unit. In order to ensure the safe and stable operation of the unit to a greater extent, it is necessary to realize the real-time monitoring of the stability parameters duri...

Claims

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Application Information

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IPC IPC(8): G06K9/00G01R31/34G01M7/02
CPCG01M7/025G01R31/343G06F2218/10
Inventor 陈启卷张巍张长伟包震洲王卫玉郭定宇
Owner STATE GRID ZHEJIANG ELECTRIC POWER
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