老挝南塔河1号水电站水轮机进水阀动水关闭试验前的准备工作浅析

Preliminary Analysis of Preparatory Work before Hydroturbine Inlet Valve Hydrodynamic Closing Test of Nam Tha No.1 Hydropower Station in Laos

老挝南塔河1号水电站是采用一管三机的引水式电站,笔者结合老挝电网的特殊性,详细研究水轮机进水阀的动水关闭试验要求及目的,在机组调试运行前期,从设计规范、设计手册、相关报告等分析水轮机进水阀动水关闭的试验目的、依据、准备工作等,对动水关闭试验可能发生的风险提出针对建议和方案。文章可为今后东南亚地区建设类似一管多机的引水式电站的动水关闭试验提供借鉴和思路。

Nam Tha No.1 Hydropower Station in Laos is a diversion type hydropower station which uses one pipe to supply three turbines.According to the particularity of Laos power grid,the authors study in detail the requirements and purposes of the hydrodynamic closing test of the hydroturbine inlet valve.In the early stage of unit commissioning and operation,the purpose,basis and preparation of the hydrodynamic closing test of the hydroturbine inlet valve are analyzed from design specifications,design manuals and related reports.Suggestions and schemes are put forward for the possible risks of hydrodynamic closing test.This paper can provide reference and ideas for the future hydrodynamic closing test of diversion type hydropower station with similar one pipe supplying multiple turbines in Southeast Asia.