2.b. Micro Hydro Basic Knowledge and Potential - Site Reconnaisance - Ifnu Setiadi

7/29/2019 2.b. Micro Hydro Basic Knowledge and Potential - Site Reconnaisance - Ifnu Setiadi

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Ifnu Setiadi Gunawan

Micro Hydro Basic Knowledge and Potential

of Micro Hydro Power (MHP)Site Reconnaissance

the Training Programme on Renewable Energy :

Micro Hydro Power for Rural Development in ASEAN Region

Bandung, 18

25 June, 2012


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Site Recconaissance

On Potensial Site On Demand Site

Identification of System Layout

Confirmation of Design Discharge

Selection of Civil Structures Location

Confirmation of the Head

Selection of the Generating System

Crossflow, Pelton, PAT, Propeller, etc

Selection of Power Demand

Facilities

Examination of Demand & Supply Balance

Rough Project Cost

EstimationProject Implementation Stage

unbalance unbalance

balance

FLOWC

HAR

TOF

MHPPROJECTPLANNING


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to investigate potential sites and supply area in order to evaluate the

feasibility of projects and get information for electrification planning.

Activities in site reconnaissance are :

to measure water discharge and head that could be utilized for micro-

hydropower generation.

Investigations of intake site, waterway route, powerhouse site and

transmission route etc.

Power demand survey.

Collecting socio-economic data such as number of households and publicfacilities in supply area, availability of local industries which will use

electricity, solvency of local people for electricity and the acceptability of local

people to the electrification scheme.


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As advance information, 1/50,000 topographic maps are prepared to

check the topography of the target site and villages, the catchment

area, villages distribution and access road. More accurate

information on site accessibility could be collected by contacting

local people concerned

Check list and interview sheet are also prepared for each site

reconnaissance.


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(1) Access conditions to reach project site & transportation of equipment

(2) Situation of existing system and future plan.

(3) Situation of river water utilization

(4) Existence of other development plans/projects in terms of roads,

farmland, housing and tourism, etc. which may affect the planned project

site and/or its surrounding area.

(5) Civil structures in adjacent area and materials used. Most civil structures

of a micro hydropower plant are similar to those of irrigation facilities and

road drainage facilities. The materials used for these structurers are often

available or can be obtained near the planned project site.

(6) Presence of natural topographical features and existing structures usable

for power generation. When an existing irrigation channel or similar is

used (including widening and/or reinforcement) as a waterway for powerstation, it is necessary to check the cross-section, gradient and current

water conveyance volume, etc. of such a channel.


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1. Topography survey to establish a waterway

route and other relevant information for theplanning of a micro-hydropower plant.

2. Measurement River Flow. However, when river

flow data is difficult to obtain, it is preferable to

measure the river discharge in the dry season,

by means of simple method, to confirm the

appropriateness of the estimated flow duration.

Ideally the project can derive Flow Duration

Curve for better design.

3. Measurement of Head. The head between the

intake point and the headtank and the head

between the headtank and the outlet point

should be measured. At the initial planning

stage, however, it may be sufficient to measurethe head between the planned headtank

location and the outlet level.

4. Demand Survey :


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(1) Location

The suitable route and distance, etc. to each power

demand facility should be surveyed to examine theoptimal transmission and distribution lines.

(2) Owners

The opinions and intentions of the owners of power

demand facilities regarding the introduction of a new

power supply source should be clarified.

(3) Types and required quality of equipment

The situation of power use by equipment (for power,heating, lighting and electrical control, etc.) and the

required level of accuracy (in terms of the allowable

voltage fluctuation and frequency fluctuation) should be

surveyed.

(4) Equipment capacity, etc.

The equipment capacity, power consumption level and

electricity tariff (or estimated electricity tariff in the caseof planning) should be surveyed.

(5) Likely problems associated with power cut

The likely problems and financial losses associated with

a power cut to power demand facilities should be

surveyed.


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w

ab

cd

e

A (cross section area) = W x H (average)

H (average) = ( a+b+c+d+e) / 5

Q = A x VmQ in m3/s

A in m2

Vm in m/s


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Stop watch to measure

time taken (t) by float to

travel distance L

Chart the cross-sectional

area at both ends. The

average cross-sectional

area is Amean

L

Average velocity (Vmean)

Use section or

count squares to

estimate the cross-

sectional area


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Using clear Hose

Water Level

Theodolite/Total Stasion


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Thank you

2.b. Micro Hydro Basic Knowledge and Potential - Site Reconnaisance - Ifnu Setiadi

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