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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.
STUDY ON EFFICIENCY INTEGRATE
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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.
STUDY ON EFFICIENCY INTEGRATE
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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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