Black-start leakage drainage pump power-loss allowable operation time measuring device and method

Abstract

The invention discloses a black-start leakage drainage pump power-loss allowable operation time measuring device and method. The device comprises a liquid level measuring sensor, a signal processing module, a processor module, a display module, a key module and a power source module. According to the device, the working state of the whole device is controlled by a setting module, the highest operating water level of a leakage water collecting well is set according to the specification of the leakage water collecting well, and the liquid level measuring sensor transmits a measured 4-20mA current signal to the signal processing module; the signal processing module converts the 4-20mA current signal into a corresponding voltage signal and transmits the voltage signal to the processor module;the processor module restores an actual liquid level value; measurement is started through the key module; a worker operates a leakage drainage pump to make the leakage drainage pump lose power, the processor module records the starting time and the starting liquid level, and records one liquid level value every two minutes; when the liquid level value reaches the highest operation water level ofthe leakage water collecting well, measurement is automatically stopped; and a measured liquid level curve, allowable operation time and a water level rising rate are displayed through the display module.

Description

technical field [0001] The invention belongs to the technical field of black start, and in particular relates to a device and method for measuring the allowable running time of a black start seepage drainage pump without power. Background technique [0002] After the power grid loses power, the power supply of the hydropower station’s factory system is completely lost. At this time, the leakage drainage pump loses its working power, and the water level of the leakage collection well will gradually rise. If it has not been restored, it may face a safety accident of flooding the plant, which also means that the black start failed. The hydropower station has not completed the black start task assigned by the power grid, which will seriously affect the recovery operation of the entire power grid. The hydropower station therefore faces under serious examination. Therefore, how to accurately measure the allowable running time of the leaking drainage pump when the power is lost, a...

AI Technical Summary

Problems solved by technology

At present, the known black-start leakage drainage pump power failure allows the measurement of the allowable running time to be measured manually, which requires the cooperation of multiple people to measure, and a special person records the liquid level value and time. Due to the leakage drainage pump power failure, the drainage well reaches the highest water level. For several hours, it brings more inconvenience to the measurement. At the same time, there is currently a lack of a device that reduces the operating pressure of the operator and has the ability to automatically measure the allowable running time of the leakage drainage pump when the power is lost.

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