Review of Cabling Techniques and Environmental Effects Applicable

Review of Cabling Techniques and Environmental Effects Applicable to the Offshore Wind
Farm Industry – Technical Report
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The Distribution Safety Rules of EDF Energy Networks; and
GB Security and Quality of Supply Standard.
Unless noted to the contrary, all equipment, materials and labour should be
supplied, designed and constructed in accordance with the applicable sections
of the latest revisions of the following:
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British Standards (BS);
ISO standards (ISO);
DNV standards (DNV);
Electricity Networks Association standards (ENA) – applicable to possible
DNO future owned equipment; and
International Electro-technical Commission standards (IEC).
Electrical Supply Characteristics and Conditions
Aside from the Grid Code, Distribution Code and Connection Agreement
conditions the latest editions of the following should be applicable to the
electrical connection in line with standard UK practices:
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Engineering Recommendation P28 – Planning Limits for Voltage Fluctuations
Caused by Industrial, Commercial and Domestic Equipment in the United
Kingdom;
Engineering Recommendation P29 – Planning Limits for Voltage Unbalance
in the United Kingdom;
Engineering Recommendation G5/4-1 – Planning Levels for Harmonic Voltage
Distortion and the Connection of Non-Linear Equipment to Transmission
Systems and Distribution Networks in the United Kingdom;
Engineering Recommendation G59/1 – Recommendations for the Connection
of Embedded Generating Plant to the Regional Electricity Companies’
Distribution Systems;
Engineering Recommendation G75 – Recommendations for Embedded
Generating Plant Connecting To Public Electricity Suppliers’ Distribution
Systems Above 20kV or with Outputs Over 5MW;
ENA Technical Specification 41-24 – Guidelines for the Design, Installation,
Testing and Maintenance of Main Earthing Systems in Substations; and
Engineering Recommendation S34 – A Guide for Assessing the Rise of
Potential at Substation Sites.