GridLink G99 Variant

Built to project rating · G99 FRT compliant · TUV Rheinland certified

G99
TÜV Rheinland

Factory-assembled power conversion skid, built to the capacity each project requires, with 33/0.69 kV rectification, DC link battery voltage support and 0.69/11 kV inversion. Fault ride-through and fast fault current injection performed by the converter output stage. IP54, C3 anti-corrosion, ONAN cooling. Brochure figures are for the certified 5 MVA reference build.

5 MVA reference build; FRT and FFCI performed by the converter output stage
Power conversion system blocks certified against G99 by TÜV Rheinland
Operates as an islanded supply or in parallel with the public grid on a dual connection
Rectification stage 33/0.69 kV, inversion stage 0.69/11 kV, with DC link battery voltage support
Factory-assembled and tested as a complete containerised unit before shipping
Outdoor-rated skid, IP54 with C3 anti-corrosion grade

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Overview

GridLink provides a controlled electrical interface between a generator and a private consumer, delivering part or all of the generator's output directly to site, either as an islanded supply or in parallel with the public grid. At its core is a power electronics converter that manages voltage, frequency and active power flow.

The G99 variant addresses a change in regulatory interpretation of G99: the converter's output stage now performs fault ride-through (FRT) and fast fault current injection (FFCI) directly, removing dependency on the generator's own ride-through capability and the earlier disconnection interlock. The 5 MVA skid footprint and interfaces are unchanged from the original variant.

Figures are indicative and subject to change; project-specific ratings and certified data are confirmed per project.

Market: United Kingdom

Specifications

Power conversion skid

Reference capacity: 5 MVA
Architecture: 33/0.69 kV rectification, DC link, 0.69/11 kV inversion
PCS modules: 4 per stage, across 2 DC-linked conversion stages
Transformer cooling: ONAN
Dimensions (W×H×D): 6058 × 2896 × 2438 mm
Weight: 24,300 kg
Enclosure rating: IP54
Anti-corrosion grade: C3
Certification: G99 (TUV Rheinland)

Battery enclosure

Dimensions (W×H×D): 1300 × 2350 × 1350 mm
Weight: 3,700 kg
Enclosure rating: IP55
Anti-corrosion grade: C5M
Design life / warranty: 10-year design life, 2-year warranty
Function: DC link voltage support only; no DC, DM or DR frequency energy-storage services

G99 compliance

Reactive power capability across voltage range: Yes
Voltage control and reactive power stability: Yes
Fault ride-through and fast fault current injection: Yes, performed by the converter output stage
LFSM-O (over-frequency): Yes
LFSM-U (under-frequency): Yes

Operation & control

Operating modes: Islanded supply, or dual connection in parallel with the public grid
Active power flow: One-directional delivery within the private-wire arrangement
SCADA / control: Indicative architecture: master controller, RTU and BCU measurement units on each MV skid; interfaces agreed per project
Scope exclusions: DC link cabling by others; external communications architecture to be agreed per project

Downloads

GridLink G99 Variant: 5 MVAProduct brochure · PDF · English

Certification & warranty

Certification

G99
TÜV Rheinland

Fault ride-through compliant to G99. Power conversion system blocks are certified against G99 by TÜV Rheinland. Type-test reports, G99 witness-test certificates and TÜV Rheinland certification are available to support DNO connection applications.