Capability Statement 2020-2022 Doc Ref No: DPC-NPD-08-CPSR-2000 DHOFAR POWER COMPANY S.A.O.C. Dhofar Power Company S.A.O.C Member of NAMA Group Contents EXECUTIVE SUMMARY ............................................................................................................................................. 5 INTRODUCTION .......................................................................................................................................................... 6 2.1 Content of the Statement ........................................................................................................................................ 6 2.2 DPC Distribution Network ......................................................................................................................................... 7 Design Philosophies and practices .................................................................................................................... 9 3.1 Background .................................................................................................................................................................... 9 3.2 Technical, Design and Operational Criteria ..................................................................................................... 10 3.3 Distribution System Security Standard ............................................................................................................. 13 3.4 Health, Safety and Environment ......................................................................................................................... 14 3.5 Technical Standards ................................................................................................................................................. 14 Overview of the distribution system .............................................................................................................. 17 4.1 Load Management ..................................................................................................................................................... 17 4.2 Load Profiles ................................................................................................................................................................ 17 4.3 Voltage Magnitude .................................................................................................................................................... 21 4.4 System Losses ............................................................................................................................................................ 22 4.5 Interconnections ........................................................................................................................................................ 23 4.6 Renewable Energy – Solar Power Generation ................................................................................................ 23 4.7 Demand Forecast ...................................................................................................................................................... 24 4.7.1 Distribution Demand Forecast ......................................................................................................................... 24 4.7.2 Generation and Transmission Demand Forecast ...................................................................................... 27 The Medium Voltage Distribution System. .................................................................................................. 29 5.1 System Configuration .............................................................................................................................................. 29 5.2 Modelling Approach .................................................................................................................................................. 32 5.3 Primary Equipment Loading .................................................................................................................................. 32 5.4 Voltage Non-Compliance ........................................................................................................................................ 32 5.5 Short Circuit Analysis .............................................................................................................................................. 32 5.6 System Security Compliance ................................................................................................................................ 33 5.7 Noncompliance to DSSS: ....................................................................................................................................... 36 5.8 Suitability for connections...................................................................................................................................... 38 5.9 RAECO Interconnection ........................................................................................................................................... 38 The Low Voltage System ...................................................................................................................................... 39 6.1 System Configuration .............................................................................................................................................. 39 6.2 System Security......................................................................................................................................................... 39 6.3 Application of LV Infrastructure ........................................................................................................................... 39 Strategic Development Statement .................................................................................................................. 41 7.1 33 kV Network Improvements ............................................................................................................................. 42 Annexure ..................................................................................................................................................................... 43 8.1 Short Circuit Analysis .............................................................................................................................................. 43 8.2 33kV Feeder Load Forecast. .................................................................................................................................. 46 References .................................................................................................................................................................. 50 9.1 Glossary of terms ...................................................................................................................................................... 50 9.2 Abbreviations .............................................................................................................................................................. 51 R2 DPC-NPD-08-CPSR-1900 Capability Statement 2020-2022.docx PAGE 2 Dhofar Power Company S.A.O.C Member of NAMA Group List of Tables Table 2.2-1: DPC Asset Information (as on 30th Sep’19) ........................................................................... 7 Table 2.2-2: Total number of Customer Account and Energy Consumption for all customer categories up to September 2019 ........................................................................................................................ 8 Table 3.2-1: DPC design short circuit levels .................................................................................................. 10 Table 3.3-1: DPC Distribution System Security Standard ........................................................................ 13 Table 3.5-1: Conductors in DPC Distribution System ................................................................................. 14 Table 3.5-2: Standard Switchgear Continuous Ratings ............................................................................. 15 Table 4.2-1: Historical Peak Demand Data for Salalah Power System ................................................ 19 Table 4.2-2: Peak Demand Data for all primary substations for the Y2019 ...................................... 20 Table 4.3-1: Voltage Magnitude for all the primary substations for the Y2019. .............................. 21 Table 4.4-1: DPC Losses Targets for PCR-3 ................................................................................................... 22 Table 4.7.1-1: The Overall Peak Demand Forecast for the period 2020-2022 ................................. 25 Table 4.7.1-2: Primary Substation load forecast for the period 2020-2022 ..................................... 25 Table 5.6-1: Security compliance of primary substations ........................................................................ 33 Table 5.7-1 : List of 33/11kV Primary Substations non-compliance to DSSS .................................. 36 Table 5.7-2 : List of 33kV Feeders non-compliance to DSSS .................................................................. 37 Table 7.1-1: Summary of 33kV on-going and proposed projects .......................................................... 42 Table 8.1-1 : 3-Phase Short Circuit (Ik'') [kA] levels at PSS 11 kV bus bars ................................... 43 Table 8.1-2 : 3-Phase Short Circuit (Ik'') [kA] levels at PSS 33 kV bus bars ..................................