BSC Procedure 32 Metering Dispensations Error! Unknown document property name.

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BSCP32/4.1 Application for a Metering Dispensation

Part A – Applicant Details

To: BSCCo Date Sent: _19 July 2013_

From: Requesting Applicant Details

Name of Sender: __________Shijun Yi____________________________________________________________

Contact email address: _____shijun.yi@centrica.com_________________________________________________

Contact Tel. No. __07557 615851__________________ Contact Fax. No.___N/A______________________

Name of Applicant Company:____Lincs Wind Farm Limited___________________________________________

Address:______1st Floor, Millstream East, Maidenhead Road _________________________________________

_____________Windsor, Berkshire, UK______________________________________________________

______________________________________________________________________________________________

______________________________________________________________________________________________

Post Code:_______SL4 5GD _____________________ Our Ref: ___________________________________

Name of Authorised Signatory: _______Shijun Yi___________________________________________

Authorised Signature: ____________ Password: __ ____________________

Request for Confidentiality NO* *Delete as applicable

BSC Procedure 32 Metering Dispensations Error! Unknown document property name.

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BSCP32/4.1 Application for a Metering Dispensation (Cont.) Part B - Affected Party Details Number of Affected parties__2___1

Contact Name at Affected party: __Mike Lee________________________________________________________

Contact email address: _______mike.lee@transmissioninvestment.com__________________________________

Contact Tel. No. ____0203 668 6688_________________ Contact Tel. No. _____07836 538 270_________

Company Name of Affected party:________ Transmission Capital Partners________________________________

Address:_______________ Sixth Floor, 134 Cannon Street____________________________________________

_______________________London, UK________________________________________________________

______________________________________________________________________________________________

______________________________________________________________________________________________

Post Code:______EC4N 5BP_______________________

Contact Name at Affected party: _____Sarah Hall_____________________________________________________

Contact email address: ________sarah.a.hall@nationalgrid.com________________________________________

Contact Tel. No. ____01926 654196 _______________ Contact Tel. No. _____07876 504907 _________

Company Name of Affected party:______National Grid______________________________________________

Address:____ Floor A3, National Grid House_______________________________________________________

___________Warwick Technology Park, Gallows Hill _________________________________________

___________Warwick, Warwickshire, UK_______________________________________________________

______________________________________________________________________________________________

Post Code:___CV34 6DA________________________

Contact Name at Affected party: ___________________________________________________________________

Contact email address: __________________________________________________________________________

Contact Tel. No. _________________________________ Contact Tel. No. _____________________________

Company Name of Affected party:__________________________________________________________________

Address:_______________________________________________________________________________________

______________________________________________________________________________________________

______________________________________________________________________________________________

______________________________________________________________________________________________

Post Code:_______________________________________

1 For more than one Affected party, Part B should be completed for each, using additional copies of Part B as required.

BSC Procedure 32 Metering Dispensations Error! Unknown document property name.

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BSCP32/4.1 Application for a Metering Dispensation (Cont.)

Part C – Reason for Application If the application is an extension or update for an existing Metering Dispensation, enter existing ref: D/400.

Site Specific *Delete as applicable.

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Background

Lincs Wind Farm Ltd (LWFL) was granted a temporary Metering Dispensation D/400 at the ISG Panel Committee meeting of 23 April 2013. The ISG agreed to grant a temporary 18 month Metering Dispensation (to 23 October 2014) to allow sufficient time for LWFL to plan for and install metering on reactor circuits.

LWFL noted the comments made by the ISG members based upon which the decision was made. After the ISG decision, we carried out further investigation and analysis to study the feasibility of installing Metering Equipment on the reactor circuits at the offshore platform. We also addressed the concerns/questions raised by the ISG members during our investigation. In the end we came to the conclusion that a lifetime Metering Dispensation is the most effective and economic solution. Therefore LWFL would like to apply for the lifetime Metering Dispensation to replace the current temporary Metering Dispensation D/400. Our reasons for seeking the lifetime Metering Dispensation are set out as below.

Reasons for the lifetime Metering Dispensation

1. Technical Challenges

LWFL sought the review from one metering service provider on the technical feasibility of installing physical meters to accurately measure the Active Energy on the reactor circuits. Because the laboratory’s accreditation for Metering Equipment only covers power factor down to 0.25, our metering service provider carried out the separate tests to investigate the accuracy of metering Active Energy on the reactor circuits. The tests indicated that the Meter error could be very large and there could be reverse power flow recorded if the power factor is very low. In the case of Lincs, the power factor of each reactor circuit is extremely low (0.0026), therefore it is not suitable to use a physical Meter to measure the Active Energy. We were advised that a Metering Dispensation is a better solution than physical Meters in this case because the estimated 105kW Active Power loss provides much better accuracy than the metered solution.

Further detail of the technical review is attached to the application.

2. Costs of installing the COP2 Meters

LWFL requested a quotation from one service provider for installing the COP2 compliant Metering Equipment on the two reactor circuits at the offshore platform. It confirmed our previous estimation that the cost of the additional Metering Equipment is about £40k. This does not include any maintenance costs and overheads such as offshore access and possible secondary system (e.g. SCADA) modification.

3. Responses to the ISG members comments on D/400

a. Mandatory Service Agreement (MSA) on Reactive Power service at offshore boundary

LWFL can confirm that LWFL will not provide a Reactive Power service to National Grid as System Operator under the MSA signed in Feb 2013. Therefore there is no need to adjust the readings for the Reactive Energy measured by the main settlement Meters to offset the Reactive Energy flow from the reactor circuits.

If in future LWFL provides a Reactive Power service to National Grid at the offshore interface point, we will negotiate the commercial contract with National Grid and the Lincs OFTO. The main Meter readings for Reactive Energy can then be adjusted for settling the payments for Reactive Energy.

b. Active Energy loss on the reactor circuits

Although the Active Energy loss on the reactor circuits is not trivial, the Active Energy loss of each reactor circuit is very predictable. Because the reactors are used to compensate the export cables, they are always ‘in circuit’ unless the export cables are switched out of service, in which case a new Aggregation Rule has been submitted removing the 105kW compensation. LWFL submitted a comprehensive set of metering Aggregation Rules to take into account the whole range of operation scenarios.

The Active Energy loss estimate of 105kW for each reactor was taken from the reactor’s factory acceptance test report. This is the guaranteed losses at rated current and temperature (75oC) with a tolerance of +/-5%. We understand that the loss is not a constant and may vary depending on the operating factors such as voltage, temperature etc. The 33kV busbar voltage operating range is between -6% to +6% of the nominal voltage, however, in reality the 33kV busbar voltage is very close to the nominal voltage due to the voltage control by the tap changer of the power transformers. So the 105kW loss estimate represents a reliable and robust solution to address the reactor Active Energy losses.

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c. Significance of the cost of Active Energy loss on reactors

On face value the estimated £100,000 a year energy loss cost assumed by the ISG is high, however, the relative cost that is caused by the errors between what the reactors will actually consume and the estimate value (105kW) is very small, because the Aggregation Rules will compensate most of the actual energy loss using the estimated value and the positive and negative estimated tolerance errors will tend to offset each other.

For the above reasons, we believe the lifetime Metering Dispensation is the most suitable approach and therefore request the ISG to consider granting the lifetime Metering Dispensation for Lincs.

Site Details (for Site Specific Metering Dispensation)

Site Name: Lincs 132/33kV offshore substation

Site Address: Lincs 132/33kV offshore substation platform

MSID(s): 7256

Registered in: CMRS / SMRS *:

*Delete as applicable.

Yes

For SMRS, please advise of SMRA in space provided.

N/A

Manufacturer Details (for Generic Metering Dispensation)

Manufacturer Name:

Metering Equipment Details:

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BSCP32/4.1 Application for a Metering Dispensation (Cont.) Part D - Technical Details Code of Practice details Metering Dispensation against Code of Practice*

COP2

Issue of Code of Practice*: Issue 4

Capacity of Metering Circuits/Site Maximum Demand (MW/MVA):

105kW/40MVAr

(Proposed) Commissioning Date of Metering:

N/A

Accuracy at Defined Metering Point: As defined in COP2

Accuracy of Proposed Solution (including loss adjustments):

within the tolerance stipulated in the COP2 Issue 4

Outstanding non-compliances on Metering Systems:

N/A

Deviations from the Code of Practice (reference to appropriate clause):

No meters installed (clause 5.3 in COP2)

* insert Code of Practice number and issue Any Other Technical Information

Please see attached supporting documentation – Technical Appendix

Materiality

(1) If installed in accordance with the relevant CoP (2) Proposed Solution £ If extra Meters are to be installed at each reactor

circuit, the total cost would be in the region of £40,000. Additional costs would be incurred due to the overhead such as offshore access, system modification etc.

£ 0.00

Declaration

We declare that other than as set out above we are in all other respects, in compliance with the requirements of the relevant Code of Practice and the BSC. A schematic is attached to this application for clarification of the metering points involved. Signature: .......................................................... Date: 19 July 2013...................................... Password: .......................................................... Duly authorised for and on behalf of Applicant Company Confirmation of Receipt and Reference The BSCCo acknowledges receipt of this document and has assigned the reference number as indicated on the first page. Signature: M Smith ............................................ Date: 19/7/2013 .......................................... Duly authorised for and on behalf of the BSCCo

Life-time Metering Dispensation for Lincs Wind Farm Ltd

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Technical Appendix

Life-time Metering Dispensation for Lincs Wind Farm Ltd

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Life-time Metering Dispensation for Lincs Wind Farm Ltd

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Life-time Metering Dispensation for Lincs Wind Farm Ltd

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