丹江口大坝加高对机组运行的影响及改造方案研究

丹江口电站首台机组于1968年10月投产发电,经过数十年的运行,机组设备老化,部分机组已陆续改造。南水北调中线工程实施丹江口大坝加高后,正常蓄水位由目前的157 m提高到170 m,对机组运行产生一定影响。本文简要介绍了机组运行现状,从机组强度、能量特性、空蚀特性、稳定性等方面详细分析了对机组运行的影响,并提出了机组改造的具体方案。

Influence of heightening Danjiangkou Dam on unit operation and unit renovating scheme

Since the first unit was put into operation in October 1968, Danjiangkou Hydropower Station has operated for tens years. After the dam has been heightened in the middle route project of the south-to-north water transfer, the storage level will rise from 157m to 170m, which would affect the unit operation. This thesis briefly introduces the present condition of the units, analyzes the influence in the respects of the unit strength, the energy performer, the cavitation character and the stability due to the storage level rising. The renovating scheme is proposed also.