SLDC-Gujarat: Draft Procedure

GRID CONNECTION TO INTRA

STATE NETWORK

DRAFT

PROCEDURE FOR GRID

CONNECTION
(TO BE FOLLOWED BY NEW GRID USER
AND
EXISTING GRID USER
AND
GRID CONNECTION AFTER
SUBSEQUENT MODIFICATION/EXPANSION)

STATE LOAD DISPATCH CENTRE

GUJARAT ENERGY TRANSMISSION CORPORATION LTD.

PREPARED BY COMMERCE DEPARTMENT

SLDC, GOTRI, VADODARA

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SLDC-Gujarat: Draft Procedure

GRID CONNECTION PROCEDURE

1. PREAMBLE:

1.1 This procedure provides guidelines for grid connection to intra state network
applicable to long term open access users including generating &
Distribution Company before commencement of long term open access.

1.2 The procedure prepare for providing grid connection to intra state network
as per prevailing regulation issued by GERC i.e. provision 10(iii) of “Open
Access in Intra-state Transmission and Distribution regulation 2005’ and
provision 3 of “Levy and Collection of Fees and Charges by SLDC
Regulations, 2005”

1.3 This procedure is prepared in order to facilitate implementation of

regulation issued by Gujarat Electricity Regulatory Commission (as
mentioned in above para) exercising powers conferred to State Load
Dispatch Centre under IE Act’2003.

1.4 An interpretation/meaning of any words, statements and expressions

hereunder this procedure shall have a same meaning as stipulated in
regulation. Any dispute, therefore, arise due to incorrect interpretation shall
be resolved as per meaning of regulation.

2. INTRODUCTION

2.1 All long term open access users or users running in parallel with system are
obtaining approval for connectivity to intra state network under connectivity
condition of State Grid Code or prevailing regulation from State
Transmission Utility.

2.2 An intending grid user has supposed to compliance all terms and condition
mentioned there under in approval given by STU and obtained certificate for
confirmation from respective STU.

2.3 The user who have obtained approval for connectivity to intra state network
and complied all conditions of approval as per connectivity procedure
stipulated in State Grid Code are eligible for connection to grid. The
procedure followed thereafter, from application to grid by intending user
and releasing grid connection, shall be exercised by SLDC.

2.4 Such application filed by intending grid users is to be processed by SLDC as

per prevailing regulation of GERC. Regulation applicable are reproduced as
under :

■ Provision 3 of “Levy and Collection of Fees and Charges by SLDC

Regulations, 2005’ is reproduced as under:

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SLDC-Gujarat: Draft Procedure

“3. Application for connection to Grid

(i) Generating companies and licensees requiring long term access to the
grid shall submit an application to the SLDC in the specified format at
least one month before the proposed date of connection to the State grid,
along with fee of Rs. 10,000.00 ( Rupees ten thousands only). The
existing licensees and generating companies shall register themselves
with SLDC by filing an application along with above mentioned fees.

(ii) The SLDC, after scrutinizing the application and after being satisfied of
the completeness and correctness of the information furnished in the
application, shall register the application in SLDC records duly intimating
the applicant regarding the acceptance of the same.

■ Provision 10(iii) of “Open Access in Intra-state Transmission and

Distribution regulation 2005’ is reproduced as under:

“10. Bulk Capacity Agreement

(i) A long term open access user shall entire into Bulk Power
Transmission/Distribution capacity agreement with the
transmission/distribution licensee. An open access user shall enter into
commercial agreements with the transmission and distribution licensees,
for use of their transmission and distribution systems.

(ii) The agreement shall provide, amongst other things for the eventuality of
premature termination of agreement and its consequences on the
contracting parties.

(iii) After agreements have been entered into and copies furnished to State
Load Dispatch Centre, the State Load Dispatch Centre shall inform the
open access user the date from which open access will be available
which will not be later than 3 days from the date of furnishing of
agreements.”

2.5 Procedure of grid connection can be applicable case to case base

depending on complexity involved. Though it is not generic, SLDC has
attempted to generalize procedure in order to diffuse complexity involved
and to maintain smooth implementation.

2.6 If the grid connection is terminated or renewed due to expiry of agreement,

shall also have to obtained grid connection as per procedure stipulated
hereunder. The any loss or damage occur due to power exchange takes
place without approval of grid connection is to be reported to appropriate
commission and shall be treated under breach of regulation.

2.7 In case there is a change in status of network, which was existed during
permission granted for grid connection by SLDC, shall also be updated to
SLDC and obtain fresh permission for grid connection.

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SLDC-Gujarat: Draft Procedure

2.8 Application of grid connection, not in conformity with procedure stipulated

here shall not be processed. Any delay arises due to incomplete or
incorrect information to SLDC shall be on account of applicant only.

2.9 SLDC may change, modify procedure for providing grid connection. SLDC
shall inform such changes in procedure to GERC for conformity and
circulated to all users and published on our website.

3. PROCEDURE FOR REGISTRATION OF APPLICATION:

The forthcoming generating companies and distribution licensees as well as

existing generating companies shall have to get registration as per procedure
described as under:

3.1 Generating companies and licensees intend to commence grid connection

after obtaining necessary approval from STU shall submit application to
SLDC in advance along with necessary fees. The application should be
made in specified format as per Annexure I to III duly filled in two copies.

3.2 The application shall contain non refundable application fee of Rs.10,
000.00 (Rupees ten thousands only) in the favor of Chief Engineer, SLDC,
GETCO, Gotri as a grid connection fees. The application received date
shall be consider from date of payments of application fee. Any delay due
to postal or clearance in bank etc. for which SLDC shall not be
responsible.

3.3 SLDC shall scrutinize the application, verify completeness and correction
of information as above, shall register application and give
acknowledgement of application.

4. SUBMISSION / PROCESSING OF GRID APPLICATION:

4.1 The relevant documents and details as per prescribed check list is to be
made available to SLDC along with application. The check list provides
generalized documents but there may be exception based on case to case
for which SLDC may require additional information. Applicant has to
provide such information in reasonable time period.

4.2 Generating Companies has to furnished details and copies of bulk Power
Purchase Agreement (PPA) duly signed by its beneficiaries as per clause 10
of GERC regulation 13 of 2005. Based on BPPA, generating companies
shall derived allocation in percentage to its beneficiaries ( up to 4 digit
accuracy after decimal point ), single figure for entire day without
discriminating peak or off peak etc.

4.3 After allocation of capacity as per BPPA, if there is surplus capacity

available with generating station, may please be specified in application
with probable mode of utilization of such capacity like sale through STOA
or pending LTOA etc.

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SLDC-Gujarat: Draft Procedure

4.4 Licensee and Generating companies intend to get grid connection has to
furnished details and copies of Bulk power transmission agreement (BPTA)
to SLDC along with relevant transmission scheme approved by appropriate
commission irrespective of dedicated lines or system strengthening
scheme.

4.5 Generating companies or licensee shall arrange to carry out system study
with connectivity of adjoining network clearly specifying period for which
study carried out with underlying assumption. Such system study is
provided by STU (GETCO) or respective RLDC on payment basis. It is
crucial for SLDC to ascertain deviation in assumption consider during
system study and real time parameters, in order to determine suitable
period/date for providing grid connection, after ensuring reliable and
secure operation. Copy of system study carried out is to be submitted
along with application.

4.6 Intending grid user, Generating companies or licensee, has to arrange data
communication facility to SLDC for real time monitoring and controlling as
per requirement of SLDC well in advance as per State Grid Code. The data
communication to SLDC is important for system operation, and same shall
be tested and obtain satisfactory certificate from SLDC in one month
advance before application of grid connection. Same is to be submitted
with application.

4.7 Generating companies & licensees has to approach SLDC with Stage wise
planning of non commercial and commercial operation, schematic network
with clear demarcation of interface points for deciding scheduling,
metering and energy accounting scheme. Single line diagram for each
stage wise planning to be submitted along with application.

4.8 As per para (ix), concerned generating companies & licensees shall
complete this exercise well in advance and obtain confirmation of
scheduling, metering and accounting scheme from SLDC which is to be
jointly agreed by all stakeholders. Meters are to be installed by respective
agencies as per metering scheme prepared by SLDC. In Gujarat, Hon’ble
commission has directed GETCO to provide meter, hence metering scheme
finalized shall be installed by generating companies or distribution
licensee in consultation with GETCO. Joint Minutes indicating
confirmation of each concerned parties is to be submitted along with
application.

4.9 Distribution licensee has to submit detail of load to be connected category

wise, and approved planning for load management within respective
control area, network diagram and important places like airport, railway
station, hospital etc.

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SLDC-Gujarat: Draft Procedure

4.10 Distribution licensee has to set up their independent control centre for
exercising their role of grid user, with real time data availability for taking
necessary action in maintaining grid, demand side management and for
single point communication with SLDC.

4.11 The purchase agreement is to be submitted by distribution licensee with

summarize statement showing each supplier, contract capacity along with
deficit and surplus for next one year.

4.12 The Co generating Plant has to apply for grid connection as per procedure
mentioned for generating station. However they have to indicate allocation
to their own company, mentioning at same place (without injecting grid)
and quantum of MW to be injected into network.

4.13 Any dedicated lines or parallel operation of co-generating plant or any

other plant shall has to follow same procedure during grid connection.

5. PROCESSING OF GRID CONNECTION:

5.1 SLDC will study impact on system due to interconnection of new

generating stations & associated network with prevailing system
conditions and provide date from which open access to grid available.

5.2 SLDC shall ensure the metering accounting, conduct meeting if necessary
with concerned stakeholders for role to play by each individual and verify
application, verify completeness and correction of information as above,
shall register application and give confirmation of acceptance to associated
parties.

5.3 The evacuation network will be studied by SLDC and ensure that it is as
per approved planning. In case deviation from planning, during incomplete
network or partial installation, SLDC has to ensure availability of adequate
transmission capacity with necessary margin.

5.4 Based on current system behavior, SLDC will determine probable date for
commencement of grid connection looking to the system reliability
conditions after fulfillment of all requirement of SLDC. The date of
commencement for open access to be adhered by respective users and
change their planning accordingly.

5.5 SLDC will finally issue a commencement order for grid connection suitably
along with suitable notes as applicable to respective grid connection.

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SLDC-Gujarat: Draft Procedure

6. APPLICABILITY OF PROCEDURE:

6.1 While connection of one or more element of transmission element to grid or

part of distribution licensee or generating companies after every
modification or upgrdation or expansion, the treatment of such connection
is not specified in regulation.

6.2 If such expansion or modification affects the capacity of generating station,

flow of transmission network and addition of new area of supply in
distribution licensee which is electrified first time shall affect grid
performance and operational planning of State Load Dispatch Centre.

6.3 In view of above consideration, procedure mentioned hereunder is to be

follow for such medication and expansion of network and addition of
generating capacity.

6.4 Licensee or generating companies has to register such up gradation or

modification and obtain approval for connection to grid. Application fee for
such up gradation and modification not mentioned in regulation.

6.5 In such type of grid connection, part of information and procedure would be
covered while earlier connection to grid, SLDC will have to provide grid
connection for additional network or capacity only.

6.6 Therefore, every modification/expansion in generating station or existing

network shall be treated as revised grid connection and accordingly revised
grid connection application to be filed. Application fee shall be applicable as
mentioned in regulation for grid connection.

7 TIME LIMIT

7.1 All existing grid users have to register with SLDC before 1st April’2009.
7.2 All New grid users have to register 45 days in advance before
commencement.

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 SLDC-Gujarat: Draft Procedure

FORMAT 1

APPLICATION FORMAT FOR GRID CONNECTION

FOR GENERATING COMPANIES
(To be applicable for Generating Station )

Name of Generating Company :

Registered Address of Generating Company :
Name of Generating Station:
Location of Generating Station :
Category of Generating Station(IPP/CPP/MPP) :
Approval obtained from various Statutory
agencies
(Name /Reference)
(Name /Reference)
Legal/Regulatory cases pending with
generating station
(Name/ Case No/Description of Subject)
(Name/ Case No/Description of Subject)
Proposed date of connection with grid
(A) Details of Generating Station
Total Generating Capacity ( in MW)
Capacity of each COD of each Rating MVAR Terminal Rated Aux
Unit Units in Capabili Voltage Req.
(MW) ty
Unit 1(Make : )
Unit 2(Make : )
Unit 3(Make : )
Unit 4(Make : )
Unit 5(Make : )
Details of Generating Transformer Type Rating Ratio HV/LV Voltage
(MVA) Var. limit
GT of Unit 1
GT of Unit 2
GT of Unit 3
GT of Unit 4
GT of Unit 5
(B) Type of Fuel
Type of Rated consumption
Fuel

Gas Bas station

Thermal Station
Cogenerations plant

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 SLDC-Gujarat: Draft Procedure

(C) Bulk Power Purchase Agreement (BPPA)

Period of Quantum Beneficiar Injection Drawal
Agreement y/Buyer point point
For supply to Licensee
Transaction 1(Route)
Transaction 2(Route)
Transaction 3(Route)
For supply to Licensee
Transaction 1(Route)
Transaction 2(Route)
Transaction 3(Route)
For supply to Licensee
Transaction 1(Route)
Transaction 2(Route)
Transaction 3(Route)
(D) Bulk Power Transmission Agreement (BPTA)
Period Quantum Connection Points
I. Intra -State Agency Interface points Voltage
1.
2
3.
4.
II. Inter-State Agency 1.
2
3.
4.
(E) Parallel Connectivity Approval
STU(Intra State) Quantum Date Period Ref No/Date
CTU( Inter State)
(F) Long Term Open Access
STU (Intra State) Quantum Period Injecting Drawee Remarks
Point Point

CTU (Inter State) Quantum Period Injecting Drawee Remarks

Point Point

(G) Operating Parameters

i) Ramp-up rate (MW/Minute)

Hot Start up

Warm Start up

Cold Start up

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 SLDC-Gujarat: Draft Procedure

ii) Ramp-down rate (MW/Minute)

Hot Start up

Warm Start up

Cold Start up
iii) Time required for synchronizing generating station

Hot Start up

Warm Start up

Cold Start up
iv) Minimum Notice required from desynchronization to
synchronized unit
v) Technical Minimum load required in open cycle by
regulating fuel consumption
vi) Technical Minimum load required in combine cycle by
regulating fuel consumption
vii) Technical Minimum load required in open cycle by
with oil support
viii) Technical Minimum load required in combine cycle
with oil support
ix) Minimum MVAR injection without loss of active power
x) Minimum time required for switching from open cycle
to combine cycle mode
xi) Minimum Time required for synchronizing units one
after another (only GT units).

(H) Metering Arrangement

(i) Metering Scheme finalized by SLDC (Ref/Date)
(ii) No of Meter Assessed (Category Assessed Installed Pending
wise )

Main Meters

Check Meters

Stand by Meters
(ii) Submission of Schematic diagram (Enclosed herewith)
showing meter number at each
location to be furnished to SLDC
(iv) Joint Testing of meters ( Date/ ( Record Notes enclosed h/w)
Testing date and record notes duly
signed)
(v) Scheduling & Accounting Scheme
finalized by SLDC(Ref/Date)
(I) Communication Scheme
(i) Communication Scheme
confirmed by SLDC (Ref/Date)
(ii) Details of data communication

No of RTU

No of Transducers /Sensors

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 SLDC-Gujarat: Draft Procedure

No of points taped

Data communication
redundancy

Date of Testing

Acceptance confirmation of
SLDC
(iii) Details of voice communication

Mode of communication (PLCC/any other)

Type of communication (Dedicated/Interdependent)
channel

Alternate Communication Channel1 Channel2 Channel3
channel

(J) Islanding & Restoration Scheme

(i) Proposed Islanding Scheme

Frequency Variation

Demand Variation

Voltage Variation
(ii)Proposed Restoration procedure

Availability of Synchronization facility

Possible sources of black start power

Availability of independent Black Start power
(iii) Mock trial of Islanding Scheme

Date of Trial

Hours system withstand in island mode

Stability Measurement
(iv) Proposed planning date for Mock trial of Islanding
Scheme ( Not more than four weeks or 30 days after
commercial operation of generating station)
(v) Coordinator /Responsible officer for operating
islanding scheme & restoration procedure (Min Two)
Name :
Address :
Contact No.(RTC) :
(K) List of Attachment

Schematic diagram

Power Purchase Agreement

Power Transmission Agreement

Registration fee receipt

Metering details including CT/PT

Switch yard diagram (Approved by EI)

Actual data as per Annexure A.2.1 of State Grid Code

Any other supporting documents

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 SLDC-Gujarat: Draft Procedure

FORMAT 2

APPLICATION FORMAT FOR GRID CONNECTION WITH SLDC

FOR DISTRIBUTION LICENSEE
(To be applicable for Distribution Licensee)

General :
Name of Distribution Licensee :
Registered Address of Distribution Licensee :
Area of Supply of Distribution Licensee:
Approval obtained from various agencies
(Name /Reference)
(Name /Reference)
Legal/Regulatory cases related with approval
of distribution licensee
(Name/ Case No/Description of Subject)
(Name/ Case No/Description of Subject)
Proposed date of grid connection :
(A) Details of Distribution licensee
1. Details of connected load Category of consumers
1 2 3 4
Total Number
Connected Load (MW)
2. Details of Interface points Voltage Wise
( Voltage wise list to be attached )* 400KV 220KV 132KV 66KV

3. Details of EHV lines Voltage Wise

400KV 220KV 132KV 66KV
Number of lines
Length of lines
4. Details of EHV Substations Voltage Wise
400KV 220KV 132KV 66KV
Number of Substations
Capacity of Substations
(B) Details of Transmission licensee with contract made & Capacity
Name of Transmission Licensee Capacity Period Seller Buyer

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(C) Details of Long Term Open Access in Transmission Network

Category Period Capacity Interface Injecting Drawee
(in STU/CTU) (From -------- To) Reserved Periphery Point Point

(D) Details of Long Term Open Access Consumers

Name of Open Period Capacity Interface Injecting Drawee
access consumer (From -------- To) Reserved Periphery Point Point

(E) Name of generating stations supplied power to distribution licensee

Name of Generating Station Capacity Contract Percentage
(in MW) Quantity (Share)
1.
2.
3.

(F) Communication Scheme

(i) Communication Scheme
confirmed by SLDC (Ref/Date)
(ii) Details of data communication

No of RTU(Substation wise
list to be attached)

No of Transducers /Sensors

No of points taped

Data communication
redundancy

Date of Testing

Acceptance confirmation of
SLDC
(iii) Details of voice communication

Mode of communication (PLCC/any other)

Type of communication (Dedicated/Interdependent)
channel

Alternate Communication channel
Channel 1
Channel 2
Channel 3

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 SLDC-Gujarat: Draft Procedure

(G) Planning for load management

Number of group Load 3Ph Load 1Ph Peak Load Min Load
A
B
C
D
E
F
G
H
(H) Details of Important Customers (Like Military Camp/Airport/Hospital etc.)
Name of Customers Location Feeding S/S Feeding Lines Remarks

(I) Metering Arrangement

(i) Metering Scheme finalized by SLDC (Ref/Date)
(ii) No of Meter Assessed (Category Assessed Installed Pending
wise )

Main Meters

Check Meters

Stand by Meters
(ii) Submission of Schematic diagram (To be enclosed herewith)
showing meter number at each
location to be furnished to SLDC
(iv) Joint Testing of meters ( Date/ ( Record Notes enclosed h/w)
Testing date and record notes duly
signed)
(v) Scheduling & Accounting Scheme Ref No/Date
finalized by SLDC(Ref/Date)
(J) Information of Control Centre of Distribution licensee
(i) Name of Control Centre:
(ii) Address of Control Centre:
(iii) Infrastructure Details:
On line data for Monitoring system:
Communication Channel:
Any other :

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 SLDC-Gujarat: Draft Procedure

(iv) Name and Designation of person responsible for grid operation

Name
Designation
Office Address:

Permanent Address:

(K) List of Attachment

o Schematic diagram
o Power Purchase Agreement
o Power Transmission Agreement
o Registration fee receipt
o Metering details including CT/PT
o Actual data as per Annexure A.2.1 of State Grid Code
o Any other supporting documents

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 SLDC-Gujarat: Draft Procedure

FORMAT 3

APPLICATION FORMAT FOR GRID CONNECTION

FOR TRANSMISSION LICENSEE
(To be applicable for Transmission Licensee)

General :
Name of Transmission Licensee :
Registered Address of Transmission Licensee :
Area of Supply of Transmission Licensee:
Approval obtained from various agencies
(Name /Reference)
(Name /Reference)
Legal/Regulatory cases related with approval
of distribution licensee
(Name/ Case No/Description of Subject)
(Name/ Case No/Description of Subject)
Proposed date of grid connection :
(A) Details of Transmission licensee
1. Details of Reactors Installed Voltage Wise
( Voltage wise list to be attached )* 400KV 220KV 132KV 66KV

3. Details of EHV lines Voltage Wise

(List to be attached) 400KV 220KV 132KV 66KV
Number of lines
Length of lines
4. Details of EHV Substations Voltage Wise
400KV 220KV 132KV 66KV
Number of Substations
Capacity of Substations
(B) Details of Distribution Licensee with contract made & Capacity
Name of Distribution Licensee Capacity Period Seller Buyer

(C) Details of Long Term Open Access Consumers

Name of Open Period Capacity Interface Injecting Drawee
access consumer (From -------- To) Reserved Periphery Point Point

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(D) Name of generating stations connected with Transmission licensee

Name of Generating Station Capacity Contract Percentage
(in MW) Quantity (Share)
1.
2.
3.

(F) Communication Scheme

(i) Communication Scheme
confirmed by SLDC (Ref/Date)
(ii) Details of data communication

No of RTU(Substation wise
list to be attached)

No of Transducers /Sensors

No of points taped

Data communication
redundancy

Date of Testing

Acceptance confirmation of
SLDC
(iii) Details of voice communication

Mode of communication (PLCC/any other)

Type of communication (Dedicated/Interdependent)
channel

Alternate Communication channel
Channel 1
Channel 2
Channel 3

(G) Metering Arrangement

(i) Metering Scheme finalized by SLDC (Ref/Date)
(ii) No of Meter Assessed (Category Assessed Installed Pending
wise )

Main Meters

Check Meters

Stand by Meters
(ii) Submission of Schematic diagram (To be enclosed herewith)
showing meter number at each
location to be furnished to SLDC
(iv) Joint Testing of meters ( Date/ ( Record Notes enclosed h/w)
Testing date and record notes duly
signed)
(v) Scheduling & Accounting Scheme Ref No/Date
finalized by SLDC(Ref/Date)

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 SLDC-Gujarat: Draft Procedure

(H) Information of Grid Substations

(i) Name of Grid Substation:
(ii) Address of Grid substation :
(iii) Infrastructure Details:
On line data for Monitoring system:
Communication Channel:
Any other :

(iv) Name and Designation of person responsible for grid operation

Name
Designation
Office Address:

(I) List of Attachment

o Schematic diagram
o Power Transmission Agreement
o Registration fee receipt
o Metering details including CT/PT
o Actual data as per Annexure A.2.1 of State Grid Code
o Any other supporting documents

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