a i ti slti f h ian innovative solution for harnessing...

A I ti S l ti f H iAn Innovative Solution for Harnessing Ultra Low Head Hydro Potential y

New Delhi, 2014-01-23,

Abhishek Swarnkar | AHEC | 2015-02-06 1

CContents

1. Attractiveness to Hydro Power Plant Developer

2. Need for Sustainable Solution

3. Tapping the Low Head Potential

4. Introduction to STREAM DIVERTM

i. Construction details

ii. Typical Application Range

iii. Assembly-Operation- Services

iv. Prototype and results.

v Plant Configurationv. Plant Configuration


1. Attractiveness to Hydro Power Plant Developer’s

Mandar Pachegaokar | India Infraline | 2015-01-23 3

A i H d P Pl D l ’Attractiveness to Hydro Power Plant Developer’s

Following features are attractive to Hydro Power Developer’s for Electro-Mechanical Equipment's

• Short Development Cycle of the Project

• Low capital Investment

• Ecological and Economical Solutions

• Less Maintenance time and easy to do.

• Easy to operate


ECONOMICALECONOMICAL

SUSTAINABILITY

ENVIRONMENT TECHNICALLY FRIENDLY SIMPLE


2. Need for Sustainable solution

N d f S i bl S l iNeed for Sustainable Solution

• Since India and majority of Asian countries are starving for the energy to satisfy their basic needs, it is imperative to come up with sustainable and innovative solution which shall satisfy the developers and investors expectations.

• Moreover there is still huge potential offered by of ultra low head sites and avenues which can offer good source of energy.

• Sustainable solution shall consider the factors like initial investments, Environmental Friendly and Technically Simple Solutions.

• Sustainability shall offer the betterment of human life with satisfaction of• Sustainability shall offer the betterment of human life with satisfaction of needs.


Mandar Pachegaokar | India Infraline | 2015-01-23 7

3.Tapping the Low Head Potential

T i h L H d P i lTapping the Low Head Potential

Head available across Check dams

Head available in Irrigation canals


T i h L H d P i lTapping the Low Head Potential

Head available across Flood control dams

H d il bl i it fHead available in exit of cooling water of large

Thermal Plants



4.Introduction to StreamDiver®

I C i D ilI. Construction Details

1 Permanent magnet generator• Water-floated

2 Thrust and guide bearings

22 4 51 3

2 Thrust and guide bearings• Water-lubricated

3 Turbine bulb• Water-filledWater-filled• no dynamic seals

4 Turbine housing with fixed guide vanesvanes

5 Propeller runner

Safe low-maintenance due to absence of dynamic seals and yperipheral systems


W Fl d P M GWater-Floated Permanent-Magnet Generator

• The air gap is water-floated

• Due to the application of high-performance magnets there is no need for active rotor coolingactive rotor cooling

• Rotor and stator are static-sealed


W L b i d Sl B iWater-Lubricated Sleeve Bearings

• Process water-lubricated bearings, 100% oil-free design

• Bearing design based on hard-soft pairing principle. Synthetic bearing pads and shells with high-strength abrasion

fsurface

• Bearing concept has proven itself in other Voith products, e. g. tidal flowother Voith products, e. g. tidal flow turbines, HyTide and Voith Inline Thruster

• Wear resistance of bearings has been tested and analyzed in bench tests


C i l B fi Th hCommercial Benefits Through Easy Technology

• Economical solutions utilizing easy and proven technology

• Eco-friendly due to oil-free operation

• Reduced technical complexity and low maintenance

• Standardized modular design

• Versatile applications with minimum installation requirements


ii A li i Rii. Application Range

Modular concept with 5 different runner diameter

• Runner diameter between 790mm• Runner diameter between 790mm –1310mm

• Between 6m – 10m Head t i d l ticustomized solution

• Unit flow is limited by runner diameter

• Overlapping application range


T i l O i DiTypical Operation Diagram

Multi unit application:

• No gate or blade regulation

Example, 15 StreamDiver units fixed speed vs. variable speed

15 units

• Flow regulation via shut on and off individual units

• Optional: flow regulation via speed 8

unitsp g p

variation

• Step less flow regulation only with variable speed units

2 units

variable speed units


iii A bl O i S iiii. Assembly – Operation – Service

• The shutdown of the turbine occurs via an automatic shut-off device (gate valve)

• The turbine is embedded in a guide frame and can be retrieved via• The turbine is embedded in a guide frame and can be retrieved via a mobile crane without draining the water

• Turbine maintenance occurs outside the power station in a k hworkshop


A bl SAssembly Sequence

• Low requirements regarding assembly and disassembly in terms of tools and other equipment

• Easy alignment of bearings and turbine shaft• Easy alignment of bearings and turbine shaft

• The rotor is fixed by positioning devices, in order to ensure safe assembly in the event of high magnetic forces

• Low sensoric needs – only temperature sensor and stator leakage sensor required


G id C i V iGrid Connection Variants

PMG LS

Grid Direct grid connection:• Synchronization by draft-tube gate• High efficiencyHigh efficiency• No flow rate or reactive power regulation

Grid connection with reactive power regulation:Grid• Reactive power regulation by compensation device• High efficiency• No flow rate regulation

PMG LS

C

Grid connection with frequency converter:• Synchronization by converter• Stepless reactive power regulation possiblePMG LS

Grid

FU• Flow regulation via variable-speed operation• Efficiency optimization to comply with head heights


P d R lPrototype and Results.References – Prototype Nussdorf

Scope of supply: Main data:

Turbines Type: 1xSD 13,1/K89-3 Generators Output: 1x270 450kWGenerators Output: 1x270-450kWGears Head: 3,21-4,86mDigital and hydr. governors Speed: 333 min-1Electrical equipment Year: 2012Electrical equipment Year: 2012Erection and commissioning Country: Austria


R f B i T RiReferences – Bearing Test Rig

• Examination of operating behavior of water-lubricated bearings under real-time conditions with identification of wearing curves

• Robustness of bearings has been proven after one year of continuous• Robustness of bearings has been proven after one year of continuous operation with river water

• Wearing behavior with extreme amounts of sediments is currently tested (2 f t lit f i t )(2 grams of quartz per liter of river water)


R f Pl M d l T RiReferences – Plant Model Test Rig

1.Scope of supply: Main data:

2.Turbines Type: 1xSD 3 45/K89 33,45/K89-3 Generators Output: 1 x 1,77kWGears Head: 0,7-0,85mDigital and hydr governors Speed: 568 min-1Digital and hydr. governors Speed: 568 min 1Electrical equipment Year: 2013Erection and commissioning Country: Austria


Pl C fi iPlant Configuration General approach

Project Site Main Components of a Hydro Power Plant Final plant Concept

• Power unit compartment• Intake• Trash rack / -cleaner• Subsidiary building (for

BoP/E and BoP/M Equip.• Draft tube• Shut off valves• Outlet

Example (source: Voith)

The main components of a hydro power plant need to be adapted to project specific requirements.The configuration process will be influence by local site condition the customer andThe configuration process will be influence by local site condition, the customer and local regulations.


I ll i E l ‘Ri P S i ’Installation Example ‘River Power Station’

• Flooded power station with angular trash rack

• Flap gate positioned on top; injector effect can be utilized in the event of overflow

• Portal crane or passable/navigable weir system


Installation Example ‘Shaft Power Plant’

• Concept patented by Munich Technical University with horizontally arranged trash racks

• Cleaning of trash racks by opening the weir flap

• Fish-friendly power plant concept


Q & AQ & A


Contact:Mandar PachegaokarTel.:919958485755e-mail:mandar pachegaokar@voith come mail:[email protected]


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