Transmission Availability Data System (tads) Data Reporting Instruction Manual August 1, 2014 For Calendar Year 2015
Appendix 6 Forms for Detailed Non-Automatic Outage Data
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- Navigate this page:
- 6.3 Transformer Detailed Non-Automatic Outage Data
- Appendix 7 – TADS Definitions
- Equivalent Circuit Mileage
- Equivalent Number of Elements
- 29.Inventory Data Entry Example
- Quarter 2 Data Changes and Additions
- Quarter 3 Data Changes and Additions
- Quarter 4 Data Changes and Additions
- Quarter 4 Multi-Circuit Structure Miles
- For the Eexample system above, Multi -Circuit Structure Miles for AC Circuits that were added or removed during the reporting year (FORM 3.5)
- Two Questions in Form 3.5 for the Example System
Appendix 6 Forms for Detailed Non-Automatic Outage Data6.1 AC Circuit Detailed Non-Automatic Outage Data
6.2 DC Circuit Detailed Non-Automatic Outage Data
6.3 Transformer Detailed Non-Automatic Outage Data
6.4 AC/DC Back-to-Back Converter Detailed Non-Automatic Outage Data
Appendix 7 – TADS DefinitionsThe TADS Definitions is a separate document with its own page numbering. Appendix 8 – Inventory Data ExamplesThe following examples demonstrate a calculation method that can be used to complete the TADS inventory spreadsheet data for detailed inventory reporting and summary Multi-Circuit Structure Mile reporting. Also, these methods are applicable in calculating Equivalent: DC Circuit Mileage, Number of DC Circuits, Number of Transformers and Number of AC/DC Back to Back Converters. Conceptually, equivalent measurements are defined as the measure multiplied by the percent of the year that the Element was able to be in an In-Service State. The TADS Working Group acknowledges that other calculation methods can be utilized to complete the inventory spreadsheet. Every reporting entity must determine the method that is best for their organization. 28.ConceptsEquivalent Circuit MileageConceptually, equivalent measurements are defined as the measure multiplied by the percent of the year that the Element was able to be in an In-Service State. For Circuit Mileage, this is defined as: 
For example, a 5 mile5-mile circuit commissioned on midnight March 1, 2014 with no outages would have 5.0 Circuits × (306.00 + 0.00)/365.00 ≈ 4.19 Equivalent AC Circuit Miles for the entire year. DC Circuit Elements are calculated similarly. To increase accuracy, fractional days may be used to take into account the circuit commissioning time. If taking into account the fractional days from the beginning of a reporting year, count from January 1 at 00:00:01 UTC for the beginning of the year. For the end of the year, count to December 31 at 23:59:59 UTC. Equivalent Number of ElementsConceptually, equivalent measurements are defined as the measure multiplied by the percent of the year that the Element was able to be in an In-Service State. For Number of Elements, this is defined as: 
For example, a circuit commissioned on midnight March 1, 2014 with no outages would have 1.0 Circuits × (306.00 + 0.00)/365.00 ≈ 0.84 Equivalent AC Circuits for the entire year. A similar calculation is performed for DC Circuit Elements. To increase accuracy, fractional days may be used to take into account the circuit commissioning time. If you are using the fractional days from the beginning of a reporting year, the count would begin fromon January 1 at 00:00:01 UTC. For the end of the year, count to December 31 at 23:59:59 UTC. 29.Inventory Data Entry ExampleThe following sections describe the detailed inventory data entry of a small, example system. In the example, it is assumed that all of the original circuits (not added during the year) were placed In-Service prior to January 1, 20134. Therefore, their Change/Reconfiguration dates would all be set to January 1, 20134. Also, a format of {From Bus, To Bus, _, Circuit Number, _, Circuit TADS Version} is used for the Unique Element Identifiers. Finally, it is assumed that the base model is not initially entered into webTADS. For most TO’s, an initial inventory from 2013 will already be entered. If this is not the case, the TO can export their inventory from a prior year and import it into the current year using webTADS. Base ModelIn the figure below, an example base system needs to be reported in webTADS. The entire system is 345 kV, and it consists of multiple AC Circuits added and removed throughout the year. Also, a temporary substation is used to perform maintenance on AC Circuit DF during the year. This will need to be accounted for in the detailed inventory as it changes both element identifiers and mileages. Figure 1: One-line diagram showing both new and removed circuits 
Quarter 1 Data EntryDuring the first quarter, all of the initial circuits in the base model are entered. There were no changes from 2014, Quarter 4 2014 to 2015, Quarter 1 2015.
Quarter 2 Data Changes and AdditionsDuring Quarter 2, circuit CD_2_1 is commissioned. Temporary substation G splits line DF_1_1 into DG_1_1 and FG_1_1. Note the use of the Precursor Element to indicate the splitting of the circuit.
Quarter 3 Data Changes and AdditionsIn the third quarter, temporary substation G is removed. This results in circuits DG_1_1 and FG_1_1 combines into the new AC Circuit, DF_1_2. Note that more than one Precursor Element can be entered.
Quarter 4 Data Changes and AdditionsIn the fourth quarter, AC Circuit CF_1_1 is placed into serviceis added.
Quarter 4 Multi-Circuit Structure MilesDuring Quarter 4, the Multi-Circuit Structure Miles are calculated. This information is entered on a summary basis. For the example system above,Example: Multi-Circuit Structure Miles for AC Circuits that were in-service at the end of the reporting year (FORM 3.5):
60 would be entered into the column titled “Multi-Circuit Structure Miles (End of Year)”. For the Eexample system above, Multi-Circuit Structure Miles for AC Circuits that were added or removed during the reporting year (FORM 3.5):
25 would be entered into the column titled “Multi-Circuit Structure Miles for Circuits Added”. 14.11 would be entered into the column titled “Equivalent Annual No. of Multi-Circuit Structure Miles for Circuits Added”. 25 Structure Miles (205 days in service during the year/366 days in year) = 14.11 A similar calculation would be performed for Multi-Circuit Structure Miles for Circuits Removed during a reporting year. Two Questions in Form 3.5 for the Example SystemNo Multi-Circuit Structure Miles are on a common structure reported by another Transmission Owner. 
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