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Department of Electrical Engineering

Industrial Visit Report

Sardar Sarovar Narmada Nigam Limited

Hydro Electric Power Station

on

10th March, 2017

Faculties Accompany: Prepared by:

Prof. Anish Vora Prof. Anish Vora

Prof. Chirag Pandya

Principal

Prof. (Dr.) H. M. Nimbark

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CONTENT

1. Acknowledgement 3

2. General Information 4

3. Objective 5

4. Assimilation 6

5. Outcome 13

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ACKNOWLEDGEMENT

We express our feeling of gratitude to the Chief Engineer, SSVNL for granting the

permission to visit the River Bed Power House (RBPH) and Canal Head Power House

(CHPH) at Sardar Sarovar Hydro Electric Power Plants.

We are very much thankful to Dr. H.M.Nimbark, Principal, GMIT for allowing and guiding

for the proper execution of the visit. We are also very much thankful to the management of

GMIT for allowing the visit.

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GENERAL INFORMATION

About SSNNL

The Sardar Sarovar Dam and Power Project and the Gujarat Water Delivery and Drainage

Project form part of the Narmada River Development Plan, whose overall objective is to

harness the Narmada River through a series of dams, for irrigation, water supply and

energy. The arrangements for sharing and utilizing water by the four benefiting states

(Madhya Pradesh, Gujarat, Maharashtra and Rajasthan) were defined by the Narmada

Water Disputes Tribunal (NWDT) in December 1979. Under this award, Gujarat was

allocated 11,000 Mm³ representing about one-third of the 75 percent dependable usable

annual water flow, and was authorized to implement a project comprising: (i) the Sardar

Sarovar Dam, (ii) a 1,200 megawatt (MW) riverbed powerhouse (RBPH), (iii) a 250 MW

canal head powerhouse (CHPH), (iv) a canal system to irrigate 1.87 m. ha in Gujarat and

70,000 ha in Rajasthan, and (v) a water supply system for about 30 million people in the

drought-prone areas of Saurashtra and Kachchh. On that basis, Gujarat prepared the Sardar

Sarovar Project in 1980, which was to be implemented in various phases over a period of

about 20 years. Phase I comprised: (i) the Sardar Sarovar Dam, (ii) the RBPH, (iii) the

CHPH, (iv) the first 144 km of the main canal up to the Mahi River, and (v) a network of

branch and distribution canals and drainage system to irrigate about 450,000 ha.

The operation and maintenance of SSP power complex and transmission lines is being done

by Gujarat State Electricity Company Limited (GSECL), for which O&M agreement between

SSNNL and GSECL has been signed.

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OBJECTIVE

Industrial visits represent an important activity in any engineering undergraduate program

that contributes to the achievement of various essential learning outcomes and

program objectives. This is achieved through identifying learning outcomes and a

suitable industrial site to achieve them. For this purpose a hydro power plant w as

indentified as a site to be visited by students. The visit was planned for 51 students

of 4th semester to help to achieve the learning outcomes.

The main objective of the industrial visit was to get all the students acquainted with actual

industrial environment and to observe that how power is generated, different controls

required and to understand function of numbers of electrical & mechanical machines and

an interdisciplinary approach.

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ASSIMILATION

Department of Electrical Engineering had organized an industrial visit of Hydro Electric

Power Station, Sardar Sarovar for 4th semester students. 51 students along with 2 faculty

members visited the Hydro power station.

The sardar Sarovar Project is one of the largest resources projects of India covering four

major states – Maharashtra, Madhya Pradesh, Gujarat and Rajasthan. Dam’s spillway

discharging capacity would be third highest in the world.

Hydro Power House

• There are two power houses. River Bed House and Canal Head Power House with an

installed capacity of 1200 MW and 250 MW respectively. The power will be shared

by three states – Madhya Pradesh – 57%, Maharashtra – 27%, and Gujarat – 16%.

This will provide a useful peaking power to western grid of the country which has

very limited hydel power production at present.

River Bed Power House (RBPH)

• The RBPH is an underground power house stationed on the right bank of the river

located about 165 meters downstream of the dam. It has six number of Francis type

reversible turbine generators each of 200 MW installed capacity. The T.G. Sets are

supplied by M/S Sumitomo Corporation, Japan and M/S BHEL. These units can

operate at minimum reservoir water level of 110.64 meters. These six units have

been commissioned in a phase manner during Feb-05 to June-06. The generation of

energy depends upon inflow of water from upstream projects and need of water for

irrigation in Gujarat.

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Canal Head Power House (CHPH)

• The CHPH is a surface power station in a saddle dam on right bank of the reservoir

having total installed capacity of 250 MW (5 x 50 MW). These five units have been

commissioned in a phased manner during Aug-04 to Dec-04. These units can be

operated with minimum reservoir water level of 110.18 meters.

• The CHPH is being operated in consultation and as per advice of NCA/WREB based

on irrigation requirement of Gujarat/Rajasthan and availability of water in reservoir

and release from upstream project of Madhya Pradesh.

Switchyard

• The energy generated from both the power houses is to be evacuated through 400

KV level through interconnecting transformers at GIS, situated in RBPH switch yard.

The 400 KV Switchyard is indoor type having Gas Insulated Switch Gear and Bus

bars. The energy is transmitted to party states i.e. Gujarat, Maharashtra and Madhya

Pradesh in the proportion of 16:27:57 respectively through 400 KV double circuit

transmission lines, namely SSP-Kasor, SSP-Asoj, SSP-Dhule and SSP-Nagda

respectively. All the transmission lines are commissioned and charged.

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Main Futures of CHPH

General 1 Location Right Bank 2 No. of Units 5 3 Rated Capacity of each unit 50 MW 4 Installed Capacity 250 MW 5 Type of Turbine Kaplan (Conventional) 6 Type of Power House Surface

Turbine 1 Rated Speed 136.4 RPM 2 Diameter of Runner 4.7 m 3 Max head race level 138.20 m 4 Min head race level 110.18 m 5 Max tail water level 95.10 m 6 Min tail water level 92.07 m

Generator 1 Rated Output 50.55 MVA 2 Line Voltage 11 +5% KV 3 Power factor (Generating) 0.9 lag 4 Frequency 50 (3%) Hz

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Main Futures of RBPH

General 1 Location Right Bank 2 No. of Units 6 3 Rated Capacity of each unit 200 MW 4 Installed Capacity 1200 MW 5 Type of Turbine Francis (Reversible) 6 Type of Power House Underground

Turbine 1 Rated Speed 136.36 RPM 2 Diameter of Runner 5.7 m 3 Max head race level 136.69 m 4 Min head race level 110.64 m 5 Max tail water level 25.91 m 6 Min tail water level 20.80 m

Generator 1 Rated Output 222.22 MVA 2 Line Voltage 13.8 +10% KV 3 Power factor (Generating) 0.9 lag 4 Power Factor (Motoring) 0.95 lead 5 Frequency 50 (3%) Hz

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OUTCOME

The visit consists of understanding about the hydro electric power plant and power

generation. The students are able to understand

Different major components of hydro power house

Difference in Francis & Kaplan Turbine

Controls, protection and Synchronization

Gas Insulated Substation

Renewable energy source

Peak load and base load power station