Incorrect operational isolation of primary or secondary equipment n/a n/a n/a 0.0 Sources: TransGrid, Revenue proposal 2014/15–2018/19, p. 226; AER analysis. TransGrid's market impact parameter performance targets that will apply within the 2015–18 regulatory control period will be published annually as part of our service standards compliance reporting process. The AER has determined that the priority projects and improvement targets shown in Table 5 will apply to TransGrid during the 2015–18 regulatory control period. Table AER’s final decision on TransGrid's network capability priority projects ($ 000s, 2013–14) Ranking Project Description Improvement target Capex Opex Total 1 Current Transformer Secondary Ratios - Queensland – New South Wales Interconnector Changes to current transformer secondary ratios on 8C, 8E, 8L and 8M lines. Full use of line thermal capacity of 1200MVA for 8C and 8E Armidale - Dumaresq circuits and 8L and 8M Dumaresq - Bulli Creek circuits during system normal conditions. 0 55 55 2 Terminal Equipment Upgrades - 67 & 68 Murray – Dederang Switchbays Replace wave traps, disconnectors and change CT ratios and protection settings on 67 & 68 line switchbays at Murray. Terminal equipment ratings that the use of dynamic rating capacity of 1486MVA for 67 & 68 Lines. 360 0 360 3 Protection & Metering Upgrades - 993 Line Protection & Replace the secondary systems panel for 993 Line at Full use of contingent capacity of 122 90 0 90
Metering Upgrade Wagga 330 substation. MVA for 993 Line. 4 Dynamic Line Ratings & Transmission Line Uprating - 83 Liddell – Muswellbrook, 84 Liddell – Tamworth 330, 85 & 86 Tamworth 330 – Armidale & 88 Muswellbrook – Tamworth 330 Lines Install dynamic line ratings based on real time ambient temperatures and wind speeds on 83, 84, 85, 86 and 88 Lines. Improved rating information based on real time ambient temperature and wind speed for these lines, which will allow increased line ratings of approximately 20% at times of favourable conditions. 1,100 0 1,100 5 Protection & Metering Upgrades - 99P Line Protection & Metering Upgrade Change to CT ratios at Gadara. (The change to CT ratios at Tumut will be undertaken as part of the secondary systems replacement project at Tumut.) Full use of contingent capacity of 128 MVA for 99P Line. 0 50 50 6 Dynamic Line Ratings & Transmission Line Uprating - 65 Murray – Tumut & 66 Murray – Lower Tumut 330kV Lines Install dynamic line ratings based on real time ambient temperatures and wind speeds on 65 and 66 Lines. Improved rating information on real time ambient temperature and wind speed for these lines, which will allow increased line ratings of approximately 20% at times of favourable conditions. 400 0 400 7 Control Schemes - Extension of Extend the Directlink emergency Full use of line capacity of the Directlink 600 0 600
Directlink Tripping Scheme tripping scheme to include the transformers at Lismore 330kV substation, 872B bay at Armidale and 872A, 872B and 892A bays at Coffs Harbour. Interconnector during outages of the Lismore transformers, 872B bay at Armidale or 872A, 872B and 892A bays at Coffs Harbour 8 Protection Changes - 976 Line Configuration & Protection Changes Install disconnector at Yass substation and change protection settings at Canberra, Yass and Queanbeyan. Reduced likelihood of loss of supply to Queanbeyan for a second contingency. This includes a reduction in recall times for 976/1 and 976/2 Lines. 110 0 110 9 Terminal Equipment Upgrades - 94E Mt Piper 132 – Wallerawang 132 Switchbays Replace interplant connections and change current transformer secondary ratios on the 94E Line switchbay at Wallerawang 132. Full use of contingent capacity of 373 MVA for 94E Line. 50 0 50 10 Dynamic Line Ratings & Transmission Line Uprating - Northern 132kV System Install dynamic line ratings on real time ambient temperatures and wind speeds on 967, 96R, 96T and 966 Lines. Improved rating information on real time ambient temperature and wind speed for these lines, which will allow increased line ratings of approximately 20% at times of favourable conditions. 1,000 0 1,000
11 Dynamic Line Ratings & Transmission Line Uprating - Snowy – Yass & Canberra 330kV Lines Install dynamic line ratings based on real time ambient temperatures and wind speeds on 01,2,3 and 07 Lines. Improved rating information on real time ambient temperature and wind speed for these lines, which will allow increased line ratings of approximately 20% at times of favourable conditions. 1,400 0 1,400 12 Control Schemes - Northern Reactive Plant Control Scheme The installation of a reactive equipment controller with the capability to control reactive equipment at Armidale 330kV Substation. The installation of emergency overvoltage and under voltage controls on reactive equipment at Armidale 330kV Substation and Dumaresq 330kV Switching Station. Operating of automatic reactive equipment control at Armidale Substation. Operation of emergency voltage control of QNI reactive equipment at Armidale and Dumaresq Substations. 524 0 524 13 Dynamic Line Ratings & Transmission Line Uprating - 4 & 5 Yass – Marulan, 9 Yass – Canberra, 61 Yass – Bannaby & 39 Bannaby – Sydney West Lines Install dynamic line ratings based on real time ambient temperatures and wind speeds on 4,5,9,61 and 39 Lines. Increase the height of transmission line conductor on 61 Improved rating information on real time ambient temperature and wind speed for these lines, which will allow increased line ratings of approximately 2,600 0 2,600
Line to achieve a maximum operating temperature of 100 degrees Celsius. 20% at times of favourable conditions. The increase in maximum operating temperature of 61 Line is expected to achieve an increase in contingency rating of this line of 137 MVA. 14 Dynamic Line Ratings & Transmission Line Uprating - 969 Tamworth 330 – Gunnedah 132kV Line Install dynamic line ratings based on real time ambient temperatures and wind speeds on 969 Line. Improved rating information based on real time ambient temperature and wind speed for this line, which will allow increased line ratings of approximately 20% at times of favourable conditions. 300 0 300 15 Terminal Equipment Upgrades - 81 & 82 Liddell – Newcastle & Tomago Lines Replace interplant connections on 81 & 82 Line switchbays at Liddell and Newcastle, and replace wave traps and change current transformer secondary ratios at Liddell. Full use of contingent capacity of 1646 MVA for 81 & 82 600 0 600 16 Capacitor Banks - Beryl Capacitor Bank Install a new capacitor bank at The installation of a capacitor bank at Beryl substation would 1,900 0 1,900
Beryl 132kV Substation. increase the total capacity available to the area by 6 MW in 2016. This additional capacity will reduce with load growth over time due to voltage constraints. 17 Travelling Wave Fault Location - Snowy Lines Install travelling wave locators on Snowy lines. Commissioning of the travelling wave fault locators on the above lines. 2,211 0 2,211 18 Travelling Wave Fault Location - North Western 132kV System Install travelling wave fault locators on the above lines. Commissioning of the travelling wave fault locators on the above lines. 877 0 877 19 Travelling Wave Fault Location - Northern 330kV Lines Install travelling wave locators on the above lines. Commissioning of the travelling wave fault locators on the above lines. 1,895 0 1,895 20 Travelling Wave Fault Location - Far North Coast 330kV and 132kV System Install travelling wave fault locators on the above lines. Commissioning of the travelling wave locators on the above lines. 890 0 890 21 Quality of Supply - Switching for 132kV Capacitor Banks Replace standard circuit breakers with circuit breakers. Installation of point-on-wave switching on 3 capacitor banks. 631 0 631 22 Quality of Supply - Point-on-Wave Switching for 66kV & Below Capacitor Banks Replace standard circuit breakers with circuit breakers. Installation of point-on-wave switching on 24 capacitor banks. 4,500 0 4,500
23 Research Projects - Behaviour of Residential Solar During System Events Install high speed monitors on connection points with significant penetration of residential solar installations, and fault recorders at locations representative of various load types. Installation and commissioning of high speed monitors and fault recorders at various representative connection points. 1,850 0 1,850 24 Travelling Wave Fault Location - Southern 330kV Network Install travelling wave locators on 63 and 51 Lines. Commissioning of the travelling wave fault locators on the above lines. 1,347 0 1,347 25 Travelling Wave Fault Location - Western 220kV Network Install travelling wave fault locators on the western 220kV network. Commissioning of the travelling wave fault locators on the above lines. 877 0 877 26 Remote Information - Remote Interrogation of Protection Relays Install remote interrogation of protection relays at 13 substations and commission production servers. Remote interrogation of protection information from 13 substations operational. 1,000 0 1,000 27 Communications - Communications to Albury, ANM & Hume Substations Installation of suitable bandwidth communications for SCADA to Albury, ANM and Hume substations. Commissioning of the communication link to Albury, ANM and Hume substations. 4,200 0 4,200 28 Research Projects - Energy Storage Install a pilot energy storage device in the Sydney area. Installation and commissioning of an energy storage device to the concept. 4,900 0 4,900 Total 36,215 105 36,317