Presenter
Mr. Lingling Li, 云南省水利水电勘测设计院有限公司
Co-author(s)
Ms. lilingling 玲玲 李, 云南省水利水电勘测设计院有限公司
Mr. tongbaolin 保林 童, 云南省水利水电勘测设计研究院
Organisation: Yunnan Institute Co.,Ltd of Water and Hydropower Engineering Investigation Design
Sub-theme
5. Establishing Sustainable Water Infrastructures
Topic
5-1. Exploitation and development of Nature-based Solutions in water engineering and technology
Body
Abstract: As the main measure of water resources dispatching and distribution, water diversion projects must solve the horizontal and vertical distribution of water resources, especially in plateau mountainous areas where residents are at a high place while water is at a low place. It is often necessary to solve the horizontal and vertical distribution of water resources at the same time. Taking a supporting project of comprehensive utilization of water resources in Yunnan Province as an example, the key technologies such as engineering layout of pump stations, flow matching between stations, calculation of hydraulic transition process of water lifting and conveying system, etc. are analyzed and studied, and an overall layout plan is reasonably selected. Improve the economy of the scheme; solve the problems of flow matching and control between the cascade pump stations in distributed layout, through calculation and analysis, select control equipment to solve the problems of high fluctuation and high water pressure in the pipeline, improve the safety of the project, make the project operation stable and dispatch and control accurate. The total length of the water transmission line of the project is 230km, 15 pumping stations are scattered along the line, the total installed capacity of the pump station is 158.9Mw, the maximum cascade design head of 1000m, at present, the first phase of the project has been in normal operation for more than 6 months, with accurate flow matching among the cascade pump stations, stable water level of the inlet and outlet pools of the pump stations, no overflow and large fluctuations in the water level of the pools under normal operating conditions, the electromechanical equipment of the pump stations and the water lifting and conveying buildings in good condition; under accidental power failure conditions, the operation and control status of the water delivery system is within the design range. The research on key technologies for the design of high-lift pump stations provides a reference for the design of water diversion projects in plateau mountainous areas.