Analysis of Hydraulic Transients for Design and Operation of Two Powerhouses in Series

by F. A. Locher, Bechtel Civil Inc, San Francisco, CA, USA,
C. Liang Lee, Bechtel Civil Inc, San Francisco, CA, USA,

Document Type: Proceeding Paper

Part of: Water Power '87


The Dinkey Creek Project will be located in the southern Sierra Nevada mountains 40 miles north-east of Fresno, California, and will develop about 4000 ft of gross head with a maximum flow of 480 cfs. Two powerhouses, each containing a single 60MW Pelton unit will be connected in series. The topography of the area around the first powerhouse is so steep that there is virtually no storage available in the afterbay for Unit 1. This small storage volume coupled with the long tunnels and penstocks further complicates the startup, flow balancing, and control problems for the system hydraulics. The analysis for and development of the control logic is presented in this paper.

Subject Headings: Hydraulic design | Hydraulic transients | Transient response | Power plants | Flow control | Hydro power | Control systems | Rivers and streams | United States | Nevada | California

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