Title:
MODELING SYSTEM AND METHOD FOR PUMPED-STORAGE UNIT SPEED REGULATING SYSTEM
Document Type and Number:
WIPO Patent Application WO/2016/029694
Kind Code:
A1
Abstract:
A modeling system and method for a pumped-storage unit speed regulating system. The method comprises the following steps of: identifying a proportionality coefficient and an integral coefficient in a PID link on the basis of pure proportion and pure integral measured data; identifying an integral time constant and a feedback time constant of a main distributing valve on the basis of measured data of the main distributing valve; identifying an integral time constant, a feedback time constant and an amplification coefficient of a main servomotor on the basis of measured data of the main servomotor; identifying a linear relationship coefficient between a power and an aperture on the basis of power-aperture measured data; identifying a prime mover parameter on the basis of measured data of an open-loop disturbance power; identifying generator set parameters on the basis of measured data of closed-loop power disturbance; optimizing the obtained parameters and returning the parameters to each sub-link parameter identification module, calculating model response, and iteratively optimizing the parameters continuously if a difference between the model response and the measured response exceeds a limit; otherwise, outputting a result. The system and method facilitate the rapid and accurate measured modeling for the pumped-storage unit speed regulating system.
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Inventors:
XU ZHENHUA (CN)
WU DANYUE (CN)
HUANG DAOSHAN (CN)
WU DANYUE (CN)
HUANG DAOSHAN (CN)
Application Number:
PCT/CN2015/075780
Publication Date:
March 03, 2016
Filing Date:
April 02, 2015
Export Citation:
Assignee:
STATE GRID CORP CHINA (CN)
STATE GRID FUJIAN ELECTRIC POWER CO LTD (CN)
STATE GRID FUJIAN ELECTRIC POWER RES INST (CN)
STATE GRID FUJIAN ELECTRIC POWER CO LTD (CN)
STATE GRID FUJIAN ELECTRIC POWER RES INST (CN)
International Classes:
G05B13/04
Foreign References:
| CN103345546A | 2013-10-09 | |||
| US4581531A | 1986-04-08 | |||
| CN102594215A | 2012-07-18 | |||
| EP1825809A2 | 2007-08-29 | |||
| CN104199302A | 2014-12-10 |
Attorney, Agent or Firm:
FUZHOU YUANCHUANG PATENT AND TRADEMARK AGENT LTD. (CN)
福州元创专利商标代理有限公司 (CN)
福州元创专利商标代理有限公司 (CN)
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