01-Section Project Rev00

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SECTION PROJECT


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SECTION -PROJECT

Clause No. PARTICULARS Page

No.

1.0 GENERAL 1

2.0 PROJECT DESCRIPTION 1

3.0 SCOPE 1

4.0 SCHEDULE OF QUANTITIES 2

5.0 BASIC REFERENCE DRAWINGS 3

6.0 ORDER OF PRECEDENCE OF DIFFERENT PARTS OF

TECHNICAL SPECIFICATION

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7.0 SPARES 4

8.0 SPECIAL TOOLS AND TACKLES 4

9.0 FACILITIES TO BE PROVIDED BY THE OWNER 4

10.0

11.0

SPECIFIC REQUIREMENT

SPECIFIC EXCLUSIONS

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ANNEXURE I LIST OF DRAWINGS 6


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SECTION-PROJECT

1.0 GENERAL

1.1 Power Grid Corporation of India Ltd. (POWERGRID), Govt. of India Enterprise

is responsible for bulk Power transmission and distribution of electrical energy

from various Central Govt. Power Projects to various utilities/beneficiaries andinterconnecting regional grids, operating and maintaining the National electrical

grid of India. It is established with mandate of "Establishment and operation of

regional and national power grids to facilitate transfer of power within and

across the regions with reliability, security and economy on sound commercial

principles, as its mission.

1.2 POWERGRID is implementing Process Bus Technology with Integration of

Optical Current transformer at 400/220kV Bhiwadi S/s.

2.0 PROJECT DESCRIPTION

2.1 At present, Power Grid has adopted Substation Automation through Station Bus

Technology. In this scheme, Protection relays & Bay control devices (Bay level)

are connected to each other and to the substation gateway (Substation Level)

and local Human Machine Interface (HMI) through a communication network

known as Station Bus. Here, Point to point connection is provided between

various process equipments and Protection relays & Bay control devices.

2.2 To further enhance the system reliability & efficiency, POWERGRID is looking

for Process Bus Technology. Process Bus shall facilitate time critical

communication between Control & Protection system (Bay Level) to the primary

process equipment (Process Level). Data gathered at the Process Level shall

be sampled, digitalized, formatted and transmitted through the process bus LAN

to Bay/Unit Level.

2.3 Fibre Optic Ethernet link shall be provided for communication between Bay

Level & Process level.

2.4 In the proposed scheme, all the input signals which are extended to the existing

protection scheme shall be duplicated. No tripping would be extended from the

proposed scheme. Parallel meter shall assess the accuracy of metering

thorough Optical Current Transformer.

3.0 SCOPE

3.1 Design, Engineering, Manufacturing, Testing, Supply, Storage & handing,

Erection and commissioning of

A. 1 no. Pilot Bay consisting of

i. 400kV Optical Current Transformer alongwith necessary support

insulators, structures etc.


4/12Y:\Process Bus\Pilot Project\01-Section project_rev00.doc

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ii. C&R Panel and HMI: Electronic & Protection panel with IEC 61850

compatible Distance Protection Relay with Ethernet module to accept

inputs from merging unit along with HMI PC

iii. Merging Unit

iv. Cable management boxv. All Power & Control cables and Cable terminations

vi. All Communication cables including Fibre optic cables

vii. Installation hardware equipment, connectors, jumpers, spacers,

grounding material etc. required for pilot bay.

3.2 Civil Works - The scope of work shall include but shall not be limited to the

following based on Owner supplied drawings to be provided during detailed

engineering:-

i. Foundation for Optical Current Transformer

ii. Foundation of BPI

iii. Cable Trench/other miscellaneous works required for installation of the

proposed system

3.3 POWERGRID SCOPE: POWERGRID shall provide the meter of the same

make as their existing meter (at Bhiwadi S/s) and integration of the same with

the existing metering workstation.

4.0 SCHEDULE OF QUANTITIES

The requirement of various items/equipments and civil works are indicated in

Bid price Schedules.

All equipments/items and civil works for which bill of quantity has been indicated

in BPS (Bid price Schedules) shall be payable on unit rate basis. During actual

execution, any variation in such quantities shall be paid based on the unit rate

under each item incorporated in Letter of award.

Wherever the quantities of items/works are not indicated, the bidder is required

to estimate the quantity required for entire execution and completion of works

and incorporate their price in respective Bid price schedules. For erectionhardware items, Bidders shall estimate the total requirement of the works and

indicate module-wise lump sum price bay wise and include the same in relevant

Bid price schedules. For module identification, Bidder may refer typical drawings

enclosed with the specifications. Any material/works for the modules not

specifically mentioned in the description in BPS, as may be required shall be

deemed to be included in the module itself.



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Bidder should include all such items in the bid proposal sheets, which are not

specifically mentioned but are essential for the execution of the contract. Item

which explicitly may not appear in various schedules and required for successful

commissioning of substation shall be included in the bid price and shall be

provided at no extra cost to Owner.

5.0 BASIC REFERENCE DRAWINGS

5.1 Single line diagram and general arrangements are enclosed with the bid

documents for reference at Annexure-I, which shall be further engineered by the

bidder. The bidder shall maintain phase to earth clearance, phase to phase

clearance and sectional clearances as per IE rules.

5.2 The enclosed drawings give the basic scheme, layout of substation, proposed

scheme. In case of any discrepancy between the drawings and text of

specification, the requirements of text shall prevail in general. However, the

Bidder is advised to get these clarified from Owner.

6.0 ORDER OF PRECEDENCE OF DIFFERENT PARTS OF TECHNICAL

SPECIFICATION

For the purpose of present scope of work, technical specification shall consist of

following parts and they should be read in conjunction with each other.

1. Section : Project Rev 00

2. Section : General technical Requirement Rev 12

3. Section : Power & Control Cable Rev 05

4. Section : Switchyard Erection Rev 07

5. Section : Structure Rev 04

6. Section Civil Works Rev 07

7. Section : Control & Relay Panels for

Process Bus Technology

Rev 00

8. Section : Substation Automation System Rev 03

In case of any discrepancy between Section-PROJECT, Section-GTR and othertechnical specifications on scope of works, Section-PROJECT shall prevail over

all other sections.

In case of any discrepancy between Section-GTR and individual sections for

various equipments, requirement of individual equipment section shall prevail.

7.0 SPARES



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Mandatory Spares

The Mandatory Spares shall be included in the bid proposal by the bidder. The

prices of these spares shall be given by the Bidder in the relevant schedule of

BPS and shall be considered for evaluation of bid. It shall not be binding on the

Owner to procure all of these mandatory spares.

The bidder is clarified that no mandatory spares shall be used during the

commissioning of the equipment. Any spares required for commissioning

purpose shall be arranged by the Contractor. The unutilized spares if any

brought for commissioning purpose shall be taken back by the contractor.

8.0 SPECIAL TOOLS AND TACKLE

The bidder shall include in his proposal the deployment of all special tools and

tackles required for erection, testing, commissioning and maintenance of

equipment. The special tools and tackles shall only cover items which are

specifically required for the equipment offered and are proprietary in nature.

However a list of all such devices should be indicated in the relevant scheduleprovided in the BPS. In addition to this the Contractor shall also furnish a list of

special tools and tackles for the various equipment in a manner to be referred

by the Employer during the operation of these equipment. The scope of

special tools and tackles are to be decided during detail engineering and the list

of special tools and tackles, if any shall be finalized.

9.0 FACILITIES TO BE PROVIDED BY THE OWNER

9.1 Owner shall make available the auxiliary power supply on chargeable basis at a

single point in the Sub-station. All further distribution from the same for

construction and permanent auxiliary supply shall be made by the contractor.However, in case of failure of power due to any unavoidable circumstances, the

contractor shall make his own necessary arrangements like diesel generator

sets etc. at his own cost so that progress of work is not affected and Owner

shall in no case be responsible for any delay in works because of non-

availability of power.

9.2 Owner shall make available construction water supply at a single point in the

substation. All further distribution for the same shall be made by the Contractor.

In case of non-availability or inadequate availability of water for construction

work, the contractor shall make his own arrangement at his own cost and the

Owner shall in no case be responsible for any delay in works because of non-

availability or inadequate availability of water.

10.0 SPECIFIC REQUIREMENT

10.1 The Bidders are advised to visit Sub-stations site and acquaint themselves with

the topography, infrastructure, etc.

10.2 The bidder shall be responsible for safety of human and equipment during the

working. It will be the responsibility of the Contractor to co-ordinate and obtain



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Electrical Inspectors clearance before commissioning. Any additional items,

modification due to observation of such statutory authorities shall be provided

by the Contractor at no extra cost to the Owner.

10.3 The Relay protection panels shall be placed in switchyard panel room (AC

Kiosk). The existing panel room (AC Kiosk) shall be used to house Relay

protection panels in switchyard. The architecture drawing & details of aboveswitchyard panel room is enclosed at AnnexureI of section project of technical

specification.

10.4 Erection and commissioning of 1 no. pilot bay consisting optical current

transformer. Erection, testing & commissioning of Control and protection Panels

shall be done by the contractors under the supervision of respective equipment

manufacturers. Charges for the above supervision shall be included by the

bidder in the erection charges for the respective equipment in the BPS.

10.5 In Section GTR and other Technical specifications, the term Purchaser and/or

Employer may be read as Owner.

10.6 The manufacturer(s) whose optical CTs are offered should have designed,

manufactured, tested as per IEC/IS or equivalent standard and supplied the

same for the 220kV or above system voltage and which are in satisfactory

operation for at least 1 (one) year as on the date of bid opening.

11.0 SPECIFIC EXCLUSIONS

The following clauses of specification for C&R panel (for automated sub-station)

are excluded for this project:

10.10.2 Back-up Directional Over Current and Earth fault protection scheme

11.0 Circuit Breaker Protection

12.0 Line Over Voltage Protection Relay

13.0 Reactor Protection

14.0 Transformer Protection

15.0 TEE Protection Differential Relay

16.0 Tripping Relay

17.0 DC Supply Supervision Relay

18.0 Bus Bar Protection

20.0 Disturbance Recording

21.0 Distance to Fault Locator

23.0 Relay Test Kit


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Annexure-I

LIST OF DRAWINGS

S. No. TITLE

1. Single Line diagram of 400/220kV Bhiwadi S/s.

2. Substation Layout of 400/220kV Bhiwadi S/s.

3. Proposed Scheme for Implementation of Process Bus Technology

4. Switchyard Panel Room of 400/220kV Bhiwadi S/s



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Annexure-I



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Bhiwadi S/s Layout

Proposed

NCIT


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Proposed Scheme

01-Section Project Rev00

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