Hydraulic interference in low head water conveyance and power generation systems with multi-node surge chamber
CAO Linning1*, XIONG Dou1, WU Daoke2
1. College of Energy and Electrical Engineering, Hohai University, Nanjing, Jiangsu 210098, China; 2. Power China Huadong Engineering Corporation Limited, Hangzhou, Zhejiang 311122, China
Abstract：For water delivery systems with special channel arrangements such as single pipe, single machine, and multi node surge chambers, surge chambers are usually set up to meet the requirements of regulating and ensuring the calculation of large fluctuation control values and stable operation of small fluctuations. Due to the mutual flow of water in the large well of the surge chamber, hydraulic connections between the units are inevitable. In order to deeply study the hydraulic interference phenomenon in this kind of hydropower system, based on the data of the expansion project of a power station, and the method of characteristics of the pressurized water delivery system, a multi node surge chamber model was introduced to analyze the impact amplitude of hydraulic interference according to different surge chamber locations, different regulation modes and other factors. At the same time, the transient process simulation calculation was carried out for the two typical hydraulic interference conditions of single unit load rejection and single unit startup load increase, and the unit output and surge chamber water level fluctuation data were obtained. According to the unit output fluctuation at different surge chamber positions, the impact amplitude of hydraulic interference was analyzed, and the measures to improve the regulation quality of units in the hydraulic interference transient process were proposed, which provided a reference for similar hydropower systems.
曹林宁*,熊豆,吴道科. 具有多节点调压室的低水头输水发电系统水力干扰[J]. 排灌机械工程学报, 2023, 41(11): 1127-1132.
CAO Linning*,XIONG Dou,WU Daoke. Hydraulic interference in low head water conveyance and power generation systems with multi-node surge chamber. Journal of Drainage and Irrigation Machinery Engin, 2023, 41(11): 1127-1132.
