R&m Efficiecy CEA

7/30/2019 R&m Efficiecy CEA

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Energy EfficiencyinThermal Power Generation

SECOND MEETING OF THE INDO-GERMAN ENERGY

CENTRAL ELECTRICITY AUTHORITY (CEA)

NATIONAL THERMAL POWER CORPORATION (NT

- DECEMBER 2007-


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DRIVERS FOR HIGHER PLANT EFFICIEN

Demand of power is set to grow with growing econ Large capacity needs to be added to meet the

growth in demand With Electricity Act 2003 coming into vogue, the p

is set to attract a lot of investors and competition With tariff based bidding becoming a norm, utili

bring down their cost of generation to remain comp Increased emphasis on Environmental consideratio

technology CDM opportunities arising out of global warming co Fuel, Land & Water availability becoming more

difficult Efficiency enhancement feasible in future plants

existing plants


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THERMAL POWER GENERATIONTECHNOLOGIES IN INDIA NEW U

Present

Pulverized coal firing units upto 500 MWsub-critical steam parameters.

Combined cycle power plant firing naturnaphtha

Use of Advanced class gas turbines

CFBC boilers for high sulphur lignite angrade fuels such as washery rejects.


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Under Induction / Development

Super critical technology few plants with 660 MWconstruction

Super critical units of 800 MW rating with higher

conditions under consideration Ultra Mega Power projects (UMPPs) envisage u

technology

IGCC as a demo plant of 100-125 MW rating (forhigh ash, low CV coals)

A major portion of future thermal capacity additiounits of 660/800 MW rating:

XI th PLAN - 12

XII th PLAN - 43

THERMAL POWER GENERATIONTECHNOLOGIES IN INDIA NEW U


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EFFICIENCY ROADMAP

02 07 1712Xth

Plan

XIth

Plan

XIIth

Plan

00

170/537/537

(500 MW)

247/537/565

(660 MW)

247/565/593

(660/800 MW)

G

rossEfficiency,

GCV

Basis


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NEED FOR R&M EXISTING UNITS

Improvement in performance paramAvailability, heat rate/efficiency, auconsumption, partial loading & forced o

Restore derated capacity Extension of economic life.

Obsolescence & non availability of spare

Environmental issues/other statutory re

Safety requirements.


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STATUS OF R&M ACTIVITIES IN IN

Planned R&M started in 1984

Programme & Achievements in various Five

SUSTENANC

2000 MU (

PERFORMANCE

11 (985 MW)

10th Plan R&M

(2002-07) LE

14500 MU

(2200 MW)

127 (17306 MW)

25 (1685 MW)

9th Plan R&M

(1997-02) LE

5085 MU

(763 MW)

198 (20869 MW)8th Plan

(1992-97)

100000 MU

(2000 MW)

163 (13570 MW)7th Plan

Additional G

(Eqvt. MW)

No. of Units (MW)Plan


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FUTURE APPROACH TOWARDS R&M

Shift in focus from Generation Maximisation to POptimisation Older units have many more opportunitrate than newer units.

Retirement of very old small size low efficiency unit sandhigher efficiency units.

Use of high end technology solutions for efficiency enhanrising costs & reduce carbon fuel points, e.g.,

- Steam flow path modification- Steam turbine and boiler upgrades- Improved plant control- Repowering

- Higher steam parameters

Additionality in efficiency improvement- Efficiency improvement as a result of normal

minimising losses ( to approach design values)- Efficiency improvement through technology interve

R&M targeting efficiency enhancement even beyond


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Cost effeupgrades

In-kind replacement

ConditionOptimisabenefit e

From Time based R&M

Pro-activReactive R&M

Improve efficiency

Attain design efficiency

UpratingRestoration of lost capacity

NEAR PAST FUTU

FUTURE APPROACH TOWARDS R&M


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STUDY ON EFFICIENCY INTEGRATE

Objectives To identify the Optimal R&M technolog

which will not only extend the life, but will asubstantial improvement in the efficiency, creliability of 200 / 210 MW and 500 MW UNITeffective manner.

To move away from the current scenario maon restoration to design conditions and beyond.

Handholding first few units e.g. NTP

MAHAGENCO etc. to demonstrate methodeffectiveness, technology choices and imstrategy.


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Methodology: Identification of specific power stations with

project authorities, State Governments & Go Selection of consultant (s) to carry out the d Constitution of a counter team from India

members from concerned utility, CEA & Min Analysis of present condition of the plant. Carrying out study at the Power Plant to est

conditions for the power plant retrofit. Preparation of detailed feasibility report for

plant.



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Deliverables from the Study.

Identification of current international practices in theand Retrofitting, up gradation and Life Extension apconditions.

Identification of various R&M options like StUpgrades, Turbine - Generator (TG) Upgrades, TG aintegrated power plant upgrades etc.

Identification of optimized R&M option for retrofit along with the time schedule for its implementation.

Development of efficiency/performance parametconsidering Indian coal quality & climatic conditions.

Bill of Quantity along with costs Cost-Benefit Analysis. Process mapping for execution of the optimized solut Road map for CDM benefits.



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IMPLEMENTATION OF EFFICIENCYINTEGRATED R&M

PART A STUDY AND PREPARATION OF FEASIBILIT

REPORT

Formation of Joint Team

India Representatives from concerned pow

Germany Funding Agency Representative ( Assimilation of Plant data, operational h

procedural requirements by power station

Preparations of documents for consultant (s) Joint team

Assessment, scope, evaluation of alternatistrategy, feasibility report by consultant

PART B IMPLEMANTATION OF R&M ACTIVITIES A

AGREED ACTION PLAN Selection of consultant for preparatio

document, implementation, evaluatioperformance acceptance power sGerman funding agency representative.

Total plant approach on EPC basis.


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A large number of 200/250 MW & some 500 MW being with German Technology are in operation for and have considerable potential for life extenimprovement

Total No.of units

> 15

200/210 MW Units (LMZ design) 53 5200/210 MW units (KWU design) 88 3

500 MW units 35 1

Thus large portion of existing capacity (25000 MW)for efficiency integrated R&M

Investment Requirement would be of the order of (US 12 million $)

POTENTIAL FOR A EFFICIENCYINTEGRATED R&M


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POTENTIAL FOR A EFFICIENCYINTEGRATED R&M

Joint strategy & its implementation woway in improving operational efficiency be

Studies to help in development of suitab

analysis, Strategy for implementation to incl

components for improved O&M practicefor long term sustenance of performance.


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R&m Efficiecy CEA

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