Automation of water supply in the Tumen distribution network

Summary

In 2016 the system of automated control of the second-lift water pumping stations of the Metelevskii and Velizhanskii water intakes was put into industrial operation. For the first time the functions of maintaining the standard operating pressure and supply of the required water amount from the second-lift pumping stations to the municipal water distribution network were automated. Introducing the complex of controlling the operation of the second-lift pumping stations on the basis of the data on the pressure in the dictating points of the network in real time mode provided for qualitatively improving the operation efficiency of the distribution network. The introduction of the automated process control system in the water supply allowed reducing pressure fluctuation in the municipal distribution network. The result was the reduction of the failure rate. Automatic maintaining the operation mode of the municipal distribution network provided for eliminating the excess pressure at the pumping stations that were unavoidable in the manual control mode. According to the expert estimates the potential of pressure reduction in the collection pipelines of the second-lift pumping stations of the Metelevskii and Velizhanskii water intakes is 10–15%. The reduction of the energy consumption with the use of a variable speed drive will be equal to the pressure reduction.

Key words

water intake , pumping station , frequency-regulated electric drive , pressure monitoring , dictating points , water supply system optimization

History of development and applied aspects of the issues of the optimal synthesis of pipeline systems

Summary

The issues of development and applied aspects of the problematics of the optimal synthesis of pipeline systems, their role and place in the advanced practice of designing and operating network facilities are considered. An analysis of the generality of continuous and discrete formulations for addressing the problem of optimizing the parameters and schemes of pipeline systems is given. The main aspects of constructing an optimization criterion for technical and economic calculations; the mathematical and meaningful origin of the main criteria for evaluating the effectiveness of capital investments, i. e., reduced and discounted costs are considered. The analysis of methods of delivering the compared options of the technical solution to the identical material result is carried out. The results of applying the proposed criterion for the comparative economic efficiency of capital investments for solving the problem of optimizing the scheme and parameters of a group water main are presented. Principal approaches to the application of minimization formulations of the optimal synthesis problem to the solution of the problem of rational rise in the cost of technical solutions are proposed.

Key words

water supply system optimization , criterion of the capital investment effectiveness , development of the options of constructing and upgrading pipeline system