Patent RU-2608020-C1 (RU)
Title: Water supply system optimization method
Inventor: IGNATCHIK VIKTOR SERGEEVICH
IPC: E03B1/00
Filed: 2015-09-22
Granted: 2017-01-11
Abstract: FIELD: engines and pumps. 
     SUBSTANCE: invention relates to water supply systems field. Method consists in fact, that water pressure at pump outlet is measured, comparing measured pressure with preset value and minimizing of measured pressure deviation from preset value by acting on pump electric motor speed. Pump (1) used is set (2) of parallel installed pumps, wherein: a) creating water supply system hydraulic model, including pump (1), system of pipelines (3), supplying water to pump inlet, and system of pipelines (4) connected to pump (1) outlet and supplying water into distribution network (5), performing water supply system hydraulic simulation, determining required water pressure  H0  value at pump outlet under condition of required head  hi  providing at all  n  consumers (6),  i = 1, 2, …, n , and determining water supply system maintenance costs   over life cycle  t , adopted for 10 years, where   and   – are investment and operating activity costs, b) in distribution network  k  separating zones (7–10) with required head  pj  at inlet of  j  zone,  j=1, 2, …, k , where  p1>p2, p2>p3, …, pk-1>pk , c) reducing required water head value at pump outlet to  H1  under condition to ensure required heat  p2  of zone  j =2 consumers and determining water supply system maintenance costs   over life cycle, where   and   – are investment and operating activity costs,   – costs of individual booster pumping plant/plants maintenance over life cycle, providing increase of heads at zone  j =1 consumers from  p2  to  p1 , d) repeating step c), reducing required value of water heads at pump outlet to  H2, …, Hj, …, Hk-1  under conditions of ensuring required pressure  pj+1  at zone  j+1  consumers, and determining water supply system maintenance costs   over life cycle, where   and   – are investment and operating activity costs,   – costs of individual booster pumping plant/plants maintenance over life cycle, providing increase of heads at zone  j  consumers from  pj+1  to  pj , and zone  j–f  from  pj+1  to  pj-f , where  f = 1, …, j-1 , e) determining required value of water head  Hk  at pump outlet under condition of providing head  pk  at zone  k  inlet and determining losses   for water supply system maintenance over life cycle, where   and   – are investment and operating activity costs,   – costs of individual booster pumping plant/plants maintenance over life cycle, providing increase of heads at zone  j  consumers from  pk  to  pj , f) forming plurality  u = k +1  of costs  Cu  values pairs of water supply system maintenance over life cycle and corresponding to them arguments, required values of water heads  Hu  at pump outlet, where  u = 0, 1, …, k , define function  C=f(H) , which in points  H0, H1, …, Hk  takes values, as close as possible to values  C0, C1, …, Ck  or equal to these values, and water head at pump outlet specified value is determined by determining head  H , at which function of  C=f(H)  takes minimum values at  H0≤H≤Hk . 
     EFFECT: enabling maintenance costs reduction. 
     1 cl, 3 dwg