RIIO Project System Studies
Undertook AC & DC thermal load flow and fault level zonal studies for the RIIO project, (Revenue, Investing, Innovation, and Output), formerly known as the Transmission Price Control Review, (TPCR).
This was to assess National Grid Electricity Transmission, (NGET) requirements for the period up to 2020 to integrate large volumes of renewable generation onto their transmission system providing compliance with the regulatory obligations, transmission licenses and codes.
RIIO Studies were performed on six (6) boundaries:- B6, B7, B12, B13, B16, and South West 2 (SW2) using generic base data, and modified base data for 2010, 2011, 2012, 2013, 2015 and 2017 year scenarios.
Base data for internal interconnectors B6 and B7 used generic 6GW boundary transfers and 2012 Anglo Scotland RIIO assumed generation background data. System Studies were carried out using National Grid's in house power system simulation tool, ELLA.
All studies included changes to main transmission system such as reconductoring system circuits, substation running arrangement changes to reduce fault levels on switchgear such as sectioning/opening section circuit breakers, system outages on 275 kV and 400 kV Grid circuits - either N-1, N-2, or N-D permutations, various generation backgrounds such as Gone Green (GG), and changes in reactive compensation equipment such as mechanically switched capacitors, (MSCs), Shunt Reactors, (SR), Static Var Compensators, (SVCs) and Quadrature Phase Shifter Transformers, (PSTs) being altered, switched in or out at various locations around the network to ensure maximum boundary transfers were being achieved without the additional expense of new reinforcement assets.
In particular studies were undertaken at Melksham 275 kV, Feckenham 400 kV, Dinorwig 400 kV, Melksham to Hinkley Point 400 kV and Melksham to Bramley 400 kV, as part of South West 2, (SW2) boundary studies.
Finally wrote RIIO 2010 to 2017 year System Analysis Report including scope, study data, outages, system changes, and boundary transfer information.
This was to assess National Grid Electricity Transmission, (NGET) requirements for the period up to 2020 to integrate large volumes of renewable generation onto their transmission system providing compliance with the regulatory obligations, transmission licenses and codes.
RIIO Studies were performed on six (6) boundaries:- B6, B7, B12, B13, B16, and South West 2 (SW2) using generic base data, and modified base data for 2010, 2011, 2012, 2013, 2015 and 2017 year scenarios.
Base data for internal interconnectors B6 and B7 used generic 6GW boundary transfers and 2012 Anglo Scotland RIIO assumed generation background data. System Studies were carried out using National Grid's in house power system simulation tool, ELLA.
All studies included changes to main transmission system such as reconductoring system circuits, substation running arrangement changes to reduce fault levels on switchgear such as sectioning/opening section circuit breakers, system outages on 275 kV and 400 kV Grid circuits - either N-1, N-2, or N-D permutations, various generation backgrounds such as Gone Green (GG), and changes in reactive compensation equipment such as mechanically switched capacitors, (MSCs), Shunt Reactors, (SR), Static Var Compensators, (SVCs) and Quadrature Phase Shifter Transformers, (PSTs) being altered, switched in or out at various locations around the network to ensure maximum boundary transfers were being achieved without the additional expense of new reinforcement assets.
In particular studies were undertaken at Melksham 275 kV, Feckenham 400 kV, Dinorwig 400 kV, Melksham to Hinkley Point 400 kV and Melksham to Bramley 400 kV, as part of South West 2, (SW2) boundary studies.
Finally wrote RIIO 2010 to 2017 year System Analysis Report including scope, study data, outages, system changes, and boundary transfer information.