Mountain Area long distance water transfer project system global optimization method

Mountain Area long distance water transfer project system global optimization method

  • CN 105,587,003 B
  • Filed: 02/02/2016
  • Issued: 07/06/2018
  • Est. Priority Date: 02/02/2016
  • Status: Active Grant
First Claim
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1. A kind of 1. Mountain Area long distance water transfer project system global optimization method, which is characterized in that the Mountain Area is defeated over long distancesHydraulic Projects system is, along the water-carriage system of water delivery engineering beginning and end on the continuous several grades of setting, wrapped per level-oneForebay, pumping plant and hydraulic pipeline are included, forebay is equipped with before the pumping plant, before connecting hydraulic pipeline to next stage pumping plant after pumping plantPond, the hydraulic pipeline is selected from according to topography variation to be passed through or the aqueduct of leaping over obstacles, tunnel, closed conduit for conveying flowIn one or more combinations;

  • For the distribution structure that connects water user and equipped with diverter valve on along the water-carriage systemBleeder;

    The pumping plant connects the electrical control equipment for providing power and control with distribution structure;

    Include the following steps:

    Step 1:

    According to intake area position and topography and geomorphology along the water head site of water-carriage system and water supply target and system, justStep drafts multiple feasible water-carriage system Layouts;

    Step 2:

    According to the circuit topographic(al) profile figure feature of the above-mentioned multiple water-carriage system Layouts drafted and water deliveryDesign discharge, bleeder position along system and divide water flow, primarily determine building composition and the position of each scheme;

    Step 3:

    The quantities of each scheme is calculated respectively:

    Including pumping plant, pipeline, tunnel, closed conduit key construction and all kinds of valvesThe annex of well;

    Step 4:

    The construction investment of above-mentioned each scheme is calculated respectively;

    Step 5:

    Calculate running cost, the administration fee of each scheme;

    Determine engineering service life, equipment replacement period and discount rate;

    MeterCalculate net present value (NPV);

    Step 6:

    Above-mentioned result of calculation is ranked up according to net present value (NPV) is ascending;

    Step 7:

    Select above-mentioned net present value (NPV) minimum and therewith one or two scheme relatively as primary election Decision Making of Line Schemes (CIth, C II), then carry out the optimization advanced optimized with water-carriage mode of water-carriage system;

    The step is divided on the basis of water forceOther composition, parameter or specification to each scheme water-carriage system is combined, and forms the new scheme under identical primary election Decision Making of Line SchemesGroup;

    Step 8:

    Repeat the 3rd~6 step action to each scheme in new scheme group to get to the net value of water-carriage systemMinimum optimal case;

    Building composition and the position of each scheme are primarily determined in the step 2 by following steps:

    (1) pile No. and elevation of features of terrain point along determining;

    (2) pipeline radical, caliber and tubing are primarily determined, calculates the hydraulic loss h under the conditions of each pipeline section design discharge;

    (3) according to the hydraulic loss h result of calculations of each scheme, pumping plant lift control point is primarily determined;

    With single-stage pump station lift notIt is basic principle more than 90m, line length 45-55km, Combining with terrain, geological conditions just intend pumping plant position;

    Side comprising tunnelCase has primarily determined pressure or without pressure, tunnel inlet and outlet position and elevation, tunnel length;

    Primarily determine duct length and closed conduitLength;

    Primarily determine the pump head of pumping plant series and every grade of pumping plant in each scheme, number of units, installed capacity;

    Composition, parameter or the specification of each scheme water-carriage system are combined respectively by following approach in the step 7:

    (1) increase one specification of caliber;

    (2) reduce one specification of caliber;

    (3) tunnel bottom import and export elevation is reduced, corresponding tunnel length may extend;

    (4) partly or entirely using the lower tubing of roughness;

    (5) Forward at pumping plant control point, the caliber behind new control point increase;

    (6) it adds without pressure pond, pipeline work pressure along reduction;

    (7) reduction of pumping plant series;

    (8) adjustment of pumping plant position;

    (9) closed conduit section and length are adjusted;

    (10) selection is suitable for the water pump assembly of each operating mode (different flow) high efficient district operation, determines constant speed pump and speed-variable pump numberAmount;

    Water-carriage mode is optimized in the step 7:

    Obtain water delivery distance L and flow Q, water level Z1 and outlet water level Z2;

    (1) if Z1 <

    Z2, water delivery of pressurizeingPump head Hp=Z2-Z1+h (m)H is the head loss m of water delivery process(2) if Z1 >

    Z2, it is contemplated that gravity water delivery, gravity aqueduct hydraulic gradient ifWith average terrain slope i0Just like ShiShimonosekiSystem:

    if

    i0, wherein i0=(Z2-Z1)/LWherein, if there is:

    F1 >

    F2+F3+F4, then using pressurization water deliveryThe expenditure of construction of F1 gravity aqueducts;

    The expenditure of construction of F2 penstocks;

    F3 pumping plant expenditures of construction;

    F4 administration and operation costsWith;

    If there is:

    F1 <

    F2+F3+F4, preferably using gravity water delivery, water delivery caliber will meet the hydraulic gradient in maximum stream flow and be less thanOr equal to terrain slope;

    The selection of the tubing uses aqueduct tubing economic technology Quantitatively Selecting method, includes the following steps:

    (1) selection is suitable for water delivery engineering, more pipelines of identical aqueduct circuit or wherein a variety of tubing of pipeline;

    (2) economic evaluation value is calculated:

    To ensure the reasonability of various tubing economic comparisons, corresponding pipeline engineering year operating charges calculating be with identical water deliveryPremised on the hydraulic loss of scale, equal length and unit length is equal or close;

    Calculate the year operating charges of tubing to be evaluatedAj=Acj+Avj+ASj (1)Wherein j=1,2,3 ... ..m;

    In formula, AjFor year operating charges;

    AcjYear cost for the corresponding pipeline engineering of tubing;

    AVjTake for annual production;

    ASjForYear power consumption expense;

    M is the tubing quantity participated in than choosing;

    (3) computing technique evaluation of estimate:

    (3-1) gives the scoring of tubing influence factor project quantification;

    Influence factor project includes major influence factors Ka, and General Influence factor project Kb, wherein major influence factors KaIncludingPipe diameter, operating pressure, geological conditions, external loads, ambient enviroment, anti-corrosion measure, product quality, installation quality ensure journeyDegree and Maintenance and Repair, i=1,2,3 ... 9;

    General Influence factor project KbIncluding way of supplying water, pipeline radical, pipeline designs, valveDoor equipment, secondary pollution and engineering management, i=1,2,3 ... 6;

    (3-2) calculates tubing technical characteristic evaluation of estimate

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