Valmont India - Utility

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Valmont India - Utility

� UTILITY POLES

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Introduction to Utility Poles

� Traditionally lattice towers common for high voltage transmission lines.

� Use of steel poles started in late 1960s in US with extensive research,

engineering and testing in early stages.

� Received wider acceptance in 70s & 80s. Valmont one of pioneers in

design and manufacturing.

� Today steel poles are the dominant type structures for new age power

transmission & are commonly used in many countries, being adopted in

more new markets. Valmont has solid business experience world wide

and a pioneer in India.

400 kV D/C Pole V/S 400 kV D/C Tower - KPTCL

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Utility Products from Valmont

Monopole H-frame Y-frame

� Sub-transmission Line Structures (up to 66 kV)

� Transmission Line Structures (up to 400 kV)

� Substation Structures

X-frame

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Steel Pole Types

� Tangent, Angle & Dead End

33 kV S/C Pole, MSEDCL 132 kV S/C Pole, UPPTCL 400 kV D/C Double Dead End Pole,

KPTCL

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Steel Pole Advantages

� Less right-of-way

� Better appearance

� Less components & fast installation

� Better reliability under extreme conditions

� Flexibility in design

� Reliable performance and long service life

400/220 kV M/C Pole, KPTCL

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Less Right of Way

� Smaller foundation takes less land

� Self supporting poles. No Stays or Strut structures required

� Efficiently placed along Highways, Road dividers, Rail tracks, etc.

� Can be installed at locations with very limited space

132 kV S/C Pole, RRVPNL 132 kV S/C Pole, UPPTCL 110 kV D/C Pole, TNEB 400/220 kV M/C Pole, KPTCL

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Better Appearance

� Remove “visual” pollution

� Structure compatible with environment

� Bulky clutter lattice tower visually unpleasant

132 kV S/C Pole, UPPTCL 132 kV D/C Pole, RRVPNL 132 kV D/C Pole, MSETCL 220 kV D/C Pole, KPTCL

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Less Components & Faster Installation

� Typical steel pole only has 15 or less components

� Whole structure can be assembled before erection

� Multiple structures can be installed in one day




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Better Reliability under Extreme Conditions

� Steel monopoles are more flexible than lattice towers, concrete or other steel structures under heavy loads

� In broken conductor case, bigger deflection of the steel pole reduces tension in intact span and induces smaller bending moment at base

� Round or multi-side profile induces less wind load

� In past cases where lattice towers and steel poles structures failed in severe wind storms, no steel poles were damaged

� Reliable performance and long service life with zero maintenance

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Flexibility in Design

� Various structure

� Different voltages grades and multiple circuits on same pole

� Distribution under-built

� Multiple circuits in different orientation

� With extensions dealing with elevations/undulations becomes easy

400 kV DDE (900) & 220 kV NH

Crossing M/C Pole, KPTCL

220 kV D/C Pole with vertical cross arm

arrangement, KPTCL400 kV DDE (900) NH Crossing

D/C Pole, KPTCL

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Reliable performance and Long service life

� Engineered product

� Effective corrosion protection (Zinc coating thickness 80 to 100 µ min)

� Controlled fabrication process and high tolerance

� Structural integrity maintained through service life (Life cycle 50 Years)

92 Mtr, 345 kV D/C Pole

Special design for river crossing

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Steel pole - Joining

� Sections joints – Slip joints and Flange joints.

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Steel pole - Other Arrangements

� Climbing arrangements with step bolts.

� Anti climbing arrangement.

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� Foundation types – Direct embedded type.

Embedded type foundation of 33 kV S/C

pole for MSEDCL

Steel pole - Foundation Options

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� Foundation types – Concrete foundations with anchor bolts.

400/220 kV M/C pole for KPTCL

(Before & After casting)

132 kV D/C pole for MSETCL

(Before casting)


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� Foundation types – Concrete foundations with anchor bolts.

132 kV D/C pole for RRVPNL

(Before & After casting)

132 kV S/C pole for UPPTCL

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� ADVANTAGE VALMONT

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Valmont India - Manufacturing Process

Plasma + Oxy cutting(To cut trapezoid and base plate)

Break press(To form the shell)

Submerged arc

longitudinal seam weld

Base plate weldingGalvanizingInstallation

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� Dedicated professional design & engineering team in India specialized in transmission pole structures.

� The analysis and design of various elements are carried out by in-house developed software “Impax”.

� Global engineering capabilities to support.

� Design methodology – Non-linear Elastic Analysis

� Manufacturing & Inspection Norms based on ASTM


Valmont India’s design capability

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� 400 kV DC & 220 kV DC pole for KPTCL and 132 kV DC poles for UETCL - full scale test in L&T test centre - Chennai

Type Test in India

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Type Test in India

� 132 kV DC pole full scale test for MSETCL – CPRI, Bangalore

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Valmont India – Full scale type test reference

FULL SCALE TYPE TEST REFERENCE LIST

End Customer

Project NamePole

Height (Mtr)

Pole Black

Weight (MT)

Voltage & Ckt TypeTest Pole

QuantityDate of Test Test Report No. & Date

MSETCL132 kV D/C line height raising project

23.93 3.06 132 kV D/CDA+3

(0-2 Deg)1 23/12/2012

CPRI/MED/TTS/2012/S24/VI/T-28/2012-13, 11th Jan’ 2013

KPTCL 66 kV D/C line diversion project 31.55 7.94 66 kV D/C Dead end 1 6/7/2013CPRI/MED/TTS/2013/S5/GK/T-9/2013-14, 11th July’2013

KPTCL400 kV & 220 kV line diversion project

44.1 15.99 400 kV D/C DY-50 1 28.09.2013L&T/TLTRS/FR/FR/DY/DC/134

UETCL MBRA-NKDA new line 29.1 8.39 132 kV D/C DTA15 1 5/10/2013 L&T/TLTRS/FR/FR/DC/130

UETCL MBRA-NKDA new line 29.43 7.10 132 kV D/CDS1

(Revision)1 21/11/2013 L&T/TLTRS/FR/FR/DC/139

UETCL MBRA-NKDA new line 29.1 15.68 132 kV D/C DTA 60 129th & 30th

Nov’2013L&T/TLTRS/FR/FR/DC/140

UETCL MBRA-NKDA new line 29.1 19.82 132 kV D/C DTA 90 1 3/12/2013 L&T/TLTRS/FR/FR/DC/141

TATA Power

220 kV Trombay - SalsetteTransmission Line

14.43 2.70 220 kV M/C DF+5 Model 1 30/1/2014L&T/TLTRS/KPM/TR/DF+5/MP/MC/129-01/2014 Dtd-6th Feb’2014.

KPTCL 220 kV Line diversion project 37.57 12.20 220 kV D/CDSX-1

(42 Deg)1 17/05/2014

L&T/TLTRS/FR/VALMONT-DSX1/DC/158Dtd - 17/05/2015

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Valmont India – Utility project reference

Client Name End Customer Project Name Voltage LevelNo of

PolesCompletion

R S Infraprojects Pvt Ltd UPPTCL 132 kV Single Circuit new line project 132 kV 67 July’2012

Valmont Plant MSEDCL 33 kV Single Circuit new line to connect Valmont Plant to MSEDCL Grid 33 kV 72 April’2012

Rahul Agency MSETCL 132 kV Double Circuit line height raising project 132 kV 1 March’2013

Tulsyan NEC LtdTulsyan NEC Ltd

(TNEB)110 kV Double Circuit new line project for power plant 110 kV 15 October’2013

Lily Realty Pvt Ltd KPTCL 400 kV/220 kV Multi Circuit line diversion project 400 kV / 220 kV 6 August’2014

Geekay Infrastractures KPTCL 66 kV Double Circuit line diversion project 66 kV 3 September’2014

Kalpataru Power Transmission Ltd UETCL, Uganda 132 kV Double Circuit new line project 132 kV 133 August’2014

Kay Cee Electricals RRVPNL 132 kV Single/Double Circuit NH Crossing project 132 kV 4 September’2014

Ithaca Estate Pvt Ltd KPTCL 220 kV Double Circuit line diversion project 220 kV 7 February’2015

Adeco Energy HVPNL 220 kV Double Circuit line height raising project 220 kV 1 March’2015

Kalpataru Power Transmission Ltd UETCL, Uganda 132 kV Double Circuit new line project 132 kV 13 April'2015

Abul Khair Steel Melting LtdAKSML,

Bangaladesh230 kV Double Circuit new line project 230 kV 25 April'2015

Bouygues (DCW)C I Energies, Ivory

Coast225 kVDouble Circuit new line project 225 kV 14 May'2015

TRANSMISSION LINE PROJECTS COMPLETED

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� POLE vs TOWER

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Comparison of transmission Tower & Monopole

TRANSMISSION STRUCTURES

Sl No PARTICULAR LATTICE STRUCTURE MONOPOLES

1 Ground Surface / Footprint More Less

Typical example Around 10 Mtr x10 Mtr

(for 132 kV)

Less than 2 Mtr base diameter

Around 30 Mtr x 30 Mtr

(for 400 kV)

Around 2 Mtr base diameter

2 Right of Way issue More due to wider footprint Lesser due to narrow footprint

Broader corridor Needs narrower corridor

3 Appearance Bulky clutter / Untidy Better appearance

4 Installation time Longer time Fast

Typical example 6-7 days post foundation 1 day post foundation

5 (a) Structural Model 3-D truss Cantilever beam

5 (b) Main force in action Tension & compression Bending movment

5 (c) Deflection Less Can take more deflections

6 Reliability in extreme condition Higher risk of collapse Comparatively much safer

7 Vandalism / Theft Higher risk

(Angles can be cut and stolen

leading to tower collapse)

No such issues in poles

(already such tower collapse

happened at several places in

India)

8 Environment friendly Less More

9 Space constraint solution Lesser chance and therefore

may need to go for high cost

cabling in absence of

monopoles

More chance and thereby avoiding

high cost of cabling

10 (a) Cost per transmission structure Cheaper Costlier

10 (b) Cost of transmission line with

these structures

Need to evaluate considering technical cost like… BOQ of line, etc.

AND Commercial costs like… Space/ROW issues, delay in completion,

etc.

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Comparison of distribution Pole & Monopole

DISTRIBUTION STRUCTURES

Sl No PARTICULAR RSJ POLE / CONCRETE POLE MONOPOLES

1 Span Less More (Almost double)

Typical span possibility 50-70 Mtr 120-150 Mtr

2 No. of poles / Km More (Due to lesser span) Lesser (Due to higher span)

3 Items requirement

(like... Insulator, hardware, etc.)

Activity requirement

(like... Erection, foundation, etc.)

More

(Due to more no. of poles/Km)

Lesser

(Due to less no. of

poles/Km)

4 Stay Wire / Guy Wire Normally required. Thus increasing

space requirement / ROW and chances

of failure due to failure of wire as well.

Not required (Self

sustaining)

5 Right of Way issues More

(Due to higher no. of poles/Km & stay &

strut requirement)

Lesser (Due to lower no. of

poles/Km & self sustaining

poles)

6 Life span RSJ Pole: Approx. 15 to 25 Yrs Almost 50 Yrs

Concrete Poles: Approx. 5 to 10 Yrs

7 Different circuit combinations Normally not possible

(Double ckt possible that too with dual

pole structure- thus taking more space)

multi-ckt possible on single

pole structure thus taking

lesser space

8 Coating Normally no protactive coating Galvanised, thus better life

& better appearance

9 Appearance Bad appearance More attractive

10 Flexibility in design Less options More options

(Single Ckt, Single side arm,

Double Ckt, Multi Ckt, etc.)

11 (a) Cost per pole Cheaper Costlier

11 (b) Cost of distribution line with

these poles

Need to evaluate considering technical cost like… BOQ of line, etc.

AND Commercial costs like… Space/ROW issues, delay in

completion, etc.

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� INTERNATIONAL PRESENCE

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110 kV Quadruple Circuit - China 230 kV X-Frame Line in Alaska

110 kV Dead End Pole

132 kV Double Circuit Tension Pole

Steel transmission pole - Photos

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132 kV Guyed Tension Pole

132 kV Self Supporting Angle Pole ->

330 kV Gantry

132 kV Twin Structure

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230 kV Double Circuit - Manila230 kV Twin Structure - Shanghai

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220 kV & 500 kV Tubular Substations

Sub station structure - Photos

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Conserving Resources. Improving Life.

Valmont India - Utility

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