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Approximation type hydropower station power pulse adjusting method and adjusting system

A power pulse and regulation system technology, applied in hydropower, engine control, mechanical equipment, etc., can solve problems such as overshoot or insufficient regulation, and achieve fast and accurate active power regulation

Active Publication Date: 2021-02-09
SICHUAN HUANENG BAOXINGHE HYDROPOWER CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide an approaching hydropower station power pulse adjustment method and adjustment system, so as to improve the existing power adjustment prone to overshoot or adjustment is not in place

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  • Approximation type hydropower station power pulse adjusting method and adjusting system
  • Approximation type hydropower station power pulse adjusting method and adjusting system

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Embodiment Construction

[0020] The present invention will be further described below with reference to the accompanying drawings and examples, and the embodiments of the present invention include but not limited to the following examples.

[0021] see figure 1 and figure 2 , an approaching type hydropower station power pulse regulation method, is characterized in that, comprises the following steps:

[0022] Step 1. Periodic sampling to obtain the real-time active power Pa, active power target value P and power regulation dead zone Pd of the hydropower unit. Step 2. Compare the absolute value |P-Pa| of the difference between the real-time active power Pa and the active power target value P with the size of the power adjustment dead zone Pd; if |P-Pa| is less than or equal to Pd, it will end after a delay adjust. Step 3. If |P-Pa| is greater than Pd, subtract the active power target value P from the active power actual value Pa at this moment to obtain ΔP, where ΔP=P-Pa. Step 4. According to △P, ...

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Abstract

The invention discloses an approximation type hydropower station power pulse adjusting method and adjusting system. The real-time active power, the active target value and the dead zone adjustment areperiodically collected, a closed-loop adjusting mode is formed for the active power, after the guide vane action direction is determined, the guide vane pulse action time is determined according to the difference value between the active target value and the active actual value, and therefore the guide vane opening degree of a water turbine is adjusted, and the active power of a hydropower station unit is adjusted. According to the approximation type hydropower station power pulse adjusting method and adjusting system, the active power of the unit can be rapidly and accurately adjusted.

Description

technical field [0001] The invention relates to the field of power regulation of hydropower stations, in particular to an approaching method and system for regulating power pulses of hydropower stations. Background technique [0002] Due to the characteristics of fast start-up and shutdown and quick load regulation response, hydropower stations often undertake the peak-shaving function in the power grid, and active power regulation is very frequent during operation. The active power adjustment of the hydroelectric unit is mainly based on the active power closed-loop adjustment of the monitoring system. When there is a new power target value, the adjustment function is triggered. The deviation of the target value of the power adjustment sends the pulse command of the active power adjustment switch to the governor in real time, and the governor modifies the given value of the guide vane opening according to the received pulse command to complete the active power regulation of ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F03B15/08F03B15/16
CPCF03B15/08F03B15/16F05B2270/328Y02E10/20
Inventor 李阳刘江涛周波周政
Owner SICHUAN HUANENG BAOXINGHE HYDROPOWER CO LTD