考虑分级振动区的水电站厂内经济运行研究  

In-plant economical operation of hydropower stations considering graded hydro-unit vibration zones

作　　者：刘瑞[1] 王义民[1] 畅建霞[1] 马长宏 顾琦 巴贵 马大海 旦增晋美 LIU Rui;WANG Yimin;CHANG Jianxia;MA Changhong;GU Qi;BA Gui;MA Dahai;DANZENG Jinmei(State Key Laboratory of Eco-hydraulics in Northwest Arid Region,Xi’an University of Technology,Xi’an 710048;Huaneng Tibet Brahmaputra Hydropower Development Investment Co.,Ltd.,Chengdu 610200;State Grid Tibet Electric Power Company Limited,Lhasa 850000)

机构地区：[1]西安理工大学省部共建西北旱区生态水利国家重点实验室,西安710048 [2]华能西藏雅鲁藏布江水电开发投资有限公司,成都610200 [3]国网西藏电力有限公司,拉萨850000

出　　处：《水力发电学报》2022年第2期63-71,共9页Journal of Hydroelectric Engineering

基　　金：国家自然科学基金(U1965202);国家自然科学基金(52009101)。

摘　　要：水轮发电机机组振动区是影响水电站厂内安全运行与经济运行的核心所在。本次研究采用机组分级振动区思想,根据机组承担不同负荷时的振动程度,划分机组振动区为禁止运行区、不建议运行区和稳定运行区,在此基础上,建立了考虑机组分级振动区的水电站厂内经济运行模型,并采用粒子群优化算法进行求解。以藏木水电站为例,厂内经济运行结果表明:以电定水模式下,综合考虑机组分级振动区影响比仅考虑机组禁止运行区影响时,全厂耗水量增加0.69%,但机组运行更为稳定,振动程度更小。考虑机组分级振动区的厂内经济运行模型更为契合水电站经济运行以安全运行为前提的实际思想。Distinguishing hydro-unit vibration zones is the core that affects safe and economical operation of a hydropower plant.This study focuses on the difference in hydro-unit vibration intensity under different loads and adopts an idea of graded vibration zones,i.e.dividing the vibration zone into an operation-forbidden zone,an unrecommended zone,and a stable zone.Then,we construct an in-plant economical operation model of hydropower stations taking these graded zones into account,and solve it using a particle swarm algorithm.Application to the Zangmu hydropower station shows that in comparison to a single operation-forbidden zone,this new method predicts an increase as low as 0.69%in the water consumption by the plant operated in the allocated output mode,while keeping unit operation more stable with lower vibration.Thus,adoption of graded vibration zones improves model applicability to the real conditions of a hydropower station and helps find operation schemes that are more economical.

关 键 词：厂内经济运行 分级振动区 机组稳定性 负荷分配 

分 类 号：TV737[水利工程—水利水电工程]