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- Data applies to the current year only. Data will be updated annually in line with the release of the Distribution Annual Planning Report (DAPR).
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About this map
This mapping portal forms part of our Distribution Annual Planning Report (DAPR) (.pdf) and presents:
- the topology of our regulated network, including transmission network connection points, substations and sub-transmission network
- forecast loads for transmission network
- connection points, forecast loads and capacity information for each of our substations and sub-transmission feeders
- joint owned connection points
- sub-transmission & substation constraints that are forecast to emerge in the next 5 years.
As a Distribution Network Service Provider (DNSP), we are required to publish this information under Rule 5.13 and Schedule 5.8 of the National Electricity Rules (NER).
Forecast Information
Peak Load Forecast and Capacity Tables
These tables show information about the substation’s customer category, transformer capacity, including emergency cyclic capacity and normal cyclic capacity, load at risk, and the compliance of each substation with its security standard.
Definition of Terms - Bulk Supply Point Capacity and Forecast Tables
Peak Risk Period
The time period over which the load is highest (Day/Night).NCC Rating (MVA)
Normal Cyclic Capacity - the total capacity with all network components and equipment in service.Contracted non-network (MVA)
The amount of embedded generation and contracted curtailed demand management capacity available within the supply area of a substation during peak times. The impacts of these have been incorporated into the load forecasts. Solar PV connections are not included in the reported figure.10 PoE Load (MVA)
Peak load forecast with 10% probability of being exceeded (one in every 10 years will be exceeded). Based on normal expected growth rates and weather corrected starting loads.LARn (MVA)
Security standard load at risk under system normal condition, expressed in MVA.LARn (MW)
Security standard load at risk under system normal condition, expressed in MW.Power Factor at Peak Load
Compensated power factor at 50 PoE Load.ECC Rating (MVA)
Emergency Cyclic Capacity – The maximum permissible peak emergency loading for a given load cycle that an item of plant can supply for an extended period of time without unacceptable damage.50 PoE Load (MVA)
Peak load forecast with 50% probability of being exceeded (one in every two years will be exceeded). Based on normal expected growth rates & weather corrected starting loads.Hours PA > 95% Peak Load
The amount of load greater than 95% 50 PoE Load.Raw LAR (MVA)
The amount of load exceeding ECC rating. (50 PoE Load – ECC Rating)2-Hour Rating (MVA)
Two Hour Emergency Capacity (2HEC) – the short term or firm delivery capacity under single contingency conditions.Auto Trans Avail (MVA)
SCADA or automatically controlled load transfers that can be implemented within one minute.Remote Trans Avail (MVA)
Load transfers that can be implemented through SCADA switching procedures by the network control officer. It is assumed that this can generally be achieved within 30 minutes.Manual Trans Avail (MVA)
Load transfers can also be deployed via manually controlled switchgear locally by field staff.Mobile Plant Avail (MVA)
The capacity of mobile substation or mobile generation that can be deployed within the timeframe and capacity prescribed by the security standard.POPS
Plant Overload Protection Scheme (POPS) consists of several applications which continuously monitor specific items of plant for overload conditions. If overload conditions are detected and validated, POPS will initiate predefined actions in order to relieve the overload condition.LARc (MVA)
Security standard load at risk for single contingent conditions.LARc (MW)
Estimated generation / load reduction required to defer the forecast system limitation. This is the security standard load at risk under single contingency condition, expressed in MW.Substation Category
For security standard application, the general type of customer a substation or feeder supplying the area.For further information, please refer to Appendix D of Energex Distribution Annual Planning Report.
Peak Load Forecast and Capacity Tables
These tables show information about the substation’s customer category, transformer capacity, including emergency cyclic capacity and normal cyclic capacity, load at risk, and the compliance of each substation with its security standard.
Definition of Terms - Zone Substation Capacity and Forecast Tables
Peak Risk Period
The time period over which the load is highest (Day/Night).NCC Rating (MVA)
Normal Cyclic Capacity - the total capacity with all network components and equipment in service.Contracted non-network (MVA)
The amount of embedded generation and contracted curtailed demand management capacity available within the supply area of a substation during peak times. The impacts of these have been incorporated into the load forecasts. Solar PV connections are not included in the reported figure.10 PoE Load (MVA)
Peak load forecast with 10% probability of being exceeded (one in every 10 years will be exceeded). Based on normal expected growth rates and weather corrected starting loads.LARn (MVA)
Security standard load at risk under system normal condition, expressed in MVA.LARn (MW)
Security standard load at risk under system normal condition, expressed in MW.Power Factor at Peak Load
Compensated power factor at 50 PoE Load.ECC Rating (MVA)
Emergency Cyclic Capacity – The maximum permissible peak emergency loading for a given load cycle that an item of plant can supply for an extended period of time without unacceptable damage.50 PoE Load (MVA)
Peak load forecast with 50% probability of being exceeded (one in every two years will be exceeded). Based on normal expected growth rates & weather corrected starting loads.Hours PA > 95% Peak Load
The amount of load greater than 95% 50 PoE Load.Raw LAR (MVA)
The amount of load exceeding ECC rating. (50 PoE Load – ECC Rating)2-Hour Rating (MVA)
Two Hour Emergency Capacity (2HEC) – the short term or firm delivery capacity under single contingency conditions.Auto Trans Avail (MVA)
SCADA or automatically controlled load transfers that can be implemented within one minute.Remote Trans Avail (MVA)
Load transfers that can be implemented through SCADA switching procedures by the network control officer. It is assumed that this can generally be achieved within 30 minutes.Manual Trans Avail (MVA)
Load transfers can also be deployed via manually controlled switchgear locally by field staff.Mobile Plant Avail (MVA)
The capacity of mobile substation or mobile generation that can be deployed within the timeframe and capacity prescribed by the security standard.POPS
Plant Overload Protection Scheme (POPS) consists of several applications which continuously monitor specific items of plant for overload conditions. If overload conditions are detected and validated, POPS will initiate predefined actions in order to relieve the overload condition.LARc (MVA)
Security standard load at risk for single contingent conditions.LARc (MW)
Estimated generation / load reduction required to defer the forecast system limitation. This is the security standard load at risk under single contingency condition, expressed in MW.Substation Category
For security standard application, the general type of customer a substation or feeder supplying the area.For further information, please refer to Appendix D of Energex Distribution Annual Planning Report.
Peak Load Forecast and Capacity Tables
These tables show information about the feeder capacity, load at risk, and the compliance of each feeder with its security standard.
Interconnected or feeders that supply multiple customers are examined in the following tables. Feeders exclusively supplying a customer owned substation or dedicated to a customer are not included in these tables.
Definition of Terms - Feeder Capacity and Forecast Tables
NCC Rating (A)
Normal Cyclic Capacity - the total capacity with all network components and equipment intact. This is the maximum permissible peak daily loading for a given load cycle that a feeder can supply each day of its life. For overhead feeders, the NCC is the conductor rating with an assumed 1m/s wind, orthogonal to the line. For underground cables, the NCC assumes that there are sufficient temperature and current operating margins from the thermal inertia of the cable and its surroundings.10 PoE Load (A)
Peak load forecast with 10% probability of being exceeded (one in every 10 years will be exceeded) under System Normal condition. Based on normal expected growth rates and weather corrected starting loads.ECC Rating (A)
Emergency Cyclic Capacity – Some underground cables are installed in close proximity to other circuits and are normally de‑rated to allow for the heat generated by the adjacent cables. ECC is the higher capacity available when any adjacent circuits have been unloaded. For overhead conductors which do not benefit from this phenomenon, the ECC is synonymous with the NCC.50 PoE Load [N-1] (A)
Peak load forecast with 50% probability of being exceeded (one in every two years will be exceeded) following the worst case single contingency (N-1) event. Based on normal expected growth rates & weather corrected starting loads.Customer Category/Sec. Standard
For security standard application, the general type of customer a sub-transmission, or transmission feeder is supplying.Transfers Available(A)
This is the total amount of load transfers that are available following the worst case network contingency. This includes automatic transfers that are controlled automatically through SCADA and are generally implemented within a minute, load transfers that can be implemented through screen switching by a network controller, manual transfers that are deployed via manually controlled switchgear locally by field staff, and mobile generation which can be deployed by field staff by moving generation to specific sites. It should be noted under the Safety Net in the Distribution Authority, it is generally assumed that 4MVA (70A) of generation is available for Urban feeders to meet this criteria and 10MVA (175A) is available for Rural feeders. These values have been used as a default in the forecast tables where these are sufficient to reduce the 50PoE load below the ECC rating. Where the load is still above the ECC rating, specific load transfers have been calculated for the feeder to determine whether the Safety Net criteria is met.For further information, please refer to Appendix E of Energex Distribution Annual Planning Report.
Peak Load Forecast and Capacity Tables
These tables show information about the feeder capacity, load at risk, and the compliance of each feeder with its security standard.
Interconnected or feeders that supply multiple customers are examined in the following tables. Feeders exclusively supplying a customer owned substation or dedicated to a customer are not included in these tables.
Definition of Terms - Feeder Capacity and Forecast Tables
NCC Rating (A)
Normal Cyclic Capacity - the total capacity with all network components and equipment intact. This is the maximum permissible peak daily loading for a given load cycle that a feeder can supply each day of its life. For overhead feeders, the NCC is the conductor rating with an assumed 1m/s wind, orthogonal to the line. For underground cables, the NCC assumes that there are sufficient temperature and current operating margins from the thermal inertia of the cable and its surroundings.10 PoE Load (A)
Peak load forecast with 10% probability of being exceeded (one in every 10 years will be exceeded) under System Normal condition. Based on normal expected growth rates and weather corrected starting loads.ECC Rating (A)
Emergency Cyclic Capacity – Some underground cables are installed in close proximity to other circuits and are normally de‑rated to allow for the heat generated by the adjacent cables. ECC is the higher capacity available when any adjacent circuits have been unloaded. For overhead conductors which do not benefit from this phenomenon, the ECC is synonymous with the NCC.50 PoE Load [N-1] (A)
Peak load forecast with 50% probability of being exceeded (one in every two years will be exceeded) following the worst case single contingency (N-1) event. Based on normal expected growth rates & weather corrected starting loads.Customer Category/Sec. Standard
For security standard application, the general type of customer a sub-transmission, or transmission feeder is supplying.Transfers Available(A)
This is the total amount of load transfers that are available following the worst case network contingency. This includes automatic transfers that are controlled automatically through SCADA and are generally implemented within a minute, load transfers that can be implemented through screen switching by a network controller, manual transfers that are deployed via manually controlled switchgear locally by field staff, and mobile generation which can be deployed by field staff by moving generation to specific sites. It should be noted under the Safety Net in the Distribution Authority, it is generally assumed that 4MVA (70A) of generation is available for Urban feeders to meet this criteria and 10MVA (175A) is available for Rural feeders. These values have been used as a default in the forecast tables where these are sufficient to reduce the 50PoE load below the ECC rating. Where the load is still above the ECC rating, specific load transfers have been calculated for the feeder to determine whether the Safety Net criteria is met.For further information, please refer to Appendix E of Energex Distribution Annual Planning Report.
General Information
Disclaimer
The DAPRM (Distribution Annual Planning Report Map) is an interactive geospatial map that has been developed to provide indicative information regarding Energex’s regulated network topology, forecast loads and capacities, and network constraints. The DAPRM is an information service available to the public.
Users of this service must acknowledge and accept that:
- The information obtained from the DAPRM is intended as general in nature, may be based on assumptions that change with time and may not necessarily be complete. Information contained in, or obtained from, the DAPRM should not be relied upon.
- Energex makes no representation or warranty as to the accuracy or completeness of any information obtained from the DAPRM. The DAPRM is not a substitute for independent advice and research.
- Energex does not accept any responsibility for any loss or damage, however caused, which any person or entity may suffer in connection with the information contained in, or obtained from, the DAPRM.