NGHIÊN CỨU ẢNH HƯỞNG CỦADAO ĐỘNG MỰC NƯỚC TRONG QUÁ TRÌNH CHUYỂN TIẾP ĐẾN KẾT QUẢ PHÂN TÍCH KẾT CẤU THÁP ĐIỀU ÁP-ÁP DỤNG CHO TRẠM THỦY ĐIỆN SUỐI CHĂN 1

Abstract

Small hydropower, especially the pressure-driven hydropower is being invested heavily in Vietnam. For this form of hydropower, the construction of a surge tank is needed to improve the quality of the process of transfer unit and reducing the water hammer pressure in the transient process. The determination of size and structure of the surge tank will bring economic benefits to the project so it should be analyzed and selected carefully. Nowadays, when analyzing the structure of the surge tank, it is often considered that the water pressure in the surge tank is hydrostatic pressure type without taking into account the fluctuation of water level in this. In this paper, the authors focus on the effect of water level fluctuations on the structural analysis of the surge tank. The model is constructed taking into account the influence of the surrounding environment on surge tank.