Large Pumping Station Optimize Scheduling And Its Economic Problems Discussed

Large-sized pump stations are rapidly developed in China. During 1960s, people constructed a lot of pump stations for irrigation and drainage in rural areas. In 1980s, pump stations were built for water-supply. Some water transfer projects over river basin are planned, some are constructed in 1990s. To meet the demand of water transfer over river basin , different types of pump stations with various lifts and variable-discharge pumps are being constructed. From engineering-technical point of view, a first class of pump stations can be built in China.However, improper operation and management for a pump station becomes a troublesome problem. It involves both administration system and economical operation. Sometimes the two problems are ihterWeaved, so technical and economical operation indexes are in disadvanced situation for a lot of pump stations in China.To counter the above mentioned problems, this thesis is based on the practical situation of pump station operation to analyse its operation cost. The operation cost of pump stations consists of fixed and variable parts. To find the fixed and variable cost, the idea of investment allotment method(IAM) is introduced to obtain the depreciation cost which is the main part of fixed cost. The optimum operation method is used to find electricity fee which is main part of the variable cost for pumping. The economical operation of pump station is based on the above-mentioned cost analysis.This thesis consists of five chapters. The constructions and development of large-size pump stations are presented in chapter 1. Based on the theory of investment allotment, the application of depreciation calculating for pump stations is discussed in chapter 2.In chapter 3, different models of optimum operations for a pump station and a group of pump stations are set up.In chapter 4 , the practical example is presented to show the application of optimum operations models of pump stations , which are located at the site of water source of the Eastern Route of South to North water tranfer project. The conclusions, which involve technicaland economical problems of pump station operation are arrived at in chapter 5, the guide lines are also drawn for economical operation of large-sized pump stations in China.