Presented by: Eng. A.Aziz Al Alawi Director, Electricity Distribution Directorate Kingdom of Bahrain 3rd Arab Union of Electricity, Electricity Distribution Conference Salalah-Sultanate Oman 27 th – 29 th August 2012

Contents  Road Map for Improvement of SAIFI, SAIDI & CAIDI  DMAIC Approach  Learning From The Current Experience  Electricity Distribution Directorate (EDD) Maintenance Process  Operational Loading Policy of Feeders  Maintenance Policy  EDD Maintenance Strategies  Maintenance Criteria  Maintenance Program  HV / LV Reinforcement & Replacement Program  11kV Cable Fault Elimination  Improvement Program  SAIFI, SAIDI, CAIDI Targets  Recommendations

Road Map for Improvement of SAIFI, SAIDI & CAIDI Maintenance Practice Maintenance programs Reinforcement & Replacement Programs Improvement Improvement of KPI (SAIFI, SAIDI, CAIDI) Achievement of Target 11kV & LV Cable Fault Elemenation KPIs An Assessment tool for improvement process Presented by Engineer Heyam Nassr Operation & Loading Policy

DMAIC APPROACH Define (D) Measure (M) Analyze (A) Implement (I) Control (C)

Condition Monitoring Program Condition Based Maintenance Asset Replacement Program Network Protection Systems Remote Controlling and Monitoring Capabilities Operational Readiness and Fast Response Generator Mobilization Prevention Containment Prevention Containment Reliability and Quality- Power Delivery Decide What To Do Based On Our Own Experience Policies, SOPs, Design, Specifications, Strategy Fixed Time Maintainence Learning From The Current Experience

Maintenance FUNCTION Maintenance OBJECTIVES Establishing a PLAN to achieve the maintenance Objective Building an ORGANIZATION to carry out the plan CONTROL systems to check if the plan and organization are meeting the objectives and to correct if necessary Ensuring and Controlling the reliability of HV & LV Networks To align EDD’s objectives with EWA‘s objectives of achieving the agreed N/W operating conditions and quality, within the accepted N/W conditions and safety standards and at minimum cost. 3-Lines Maintenance Wall boxes, Service Twin Wires, 11kV Over head lines and s/s 3 Maintenance Depots of Muharraq, Manama and Riffa Outsourcing. Implementing of Asset Management Concept. Controlling and monitoring of Productivity, Effectiveness, and Organization Efficiency. EDD Maintenance Process

 11kV network 150A(3 MVA) up to open point for copper cable feeders (50% cable loaded) 125A (2.5MVA) up to open point for aluminum cable feeders (50% cable loaded) Controlled by Distribution Control Centre (DCC)  400V network Maximum feeder load is 150kVA (5*60Amp, 3*100Amp, 2*160Amp or 1*250Amps) Controlled by Low Voltage Operations Operational Loading Policy of Feeders

 Maintenance Scheduling: Planned maintenance will be scheduled on an annual and monthly basis and be approved, in advance by DCC & LV Operation, as appropriate. Preventive maintenance and corrective maintenance should be planned and scheduled jointly by Maintenance & Operations groups. Overtime will be authorized based on the related Standard Operating Procedure (SOP).  Materials Requirements: Maintenance planning will include identification of requirements of materials and manpower; EDD and outsourced. Materials Requirements will be identified and expressed by Maintenance Group. Planning & Materials section will then deliver materials as and when specified.  Safety and Operating Procedures: HV and LV isolation works shall be done in accordance with the standard operating procedures. Mobilization of generators connection shall be done in accordance with standard operating procedure. Maintenance Policy

 3-lines Maintenance Strategy.  Continuous improvement of the network: Reinforcement and Correction Maintenance.  Fully implementation of CASCADE, via computerized Maintenance Management System.  Staff training and development (Multi skilling)  Deployment of new technologies such as Responder, to enhance quality of our services. EDD Maintenance Strategies

 First Line Maintenance Strategy o To Carry-Out Inspection: Objectively, by using Infrared Camera for inspection of Transformers, LV Panels & 11kv Overhead), 11KV Network partial Discharge test. (Condition Based Maintenance) Subjectively, by visually inspection of HV and LV transformer connection, oil checking, silica gel checking, etc. o To Respond to Inspection Results: Cleaning and minor rectification of equipment defects of LV Panel Board and Ring Main Units (RMUs) Refurbishment and cleaning of wall boxes. 3-Lines Maintenance Strategy

 Second Line Maintenance Strategy o Replacement of defective items/components based on: Inspection of the First Line Maintenance Time Schedule Maintenance.  Third Line Maintenance Strategy o Life cycle Asset Assessment: Transformers (35-40 years), RMUs Oil (25 years) and RMU SF6 (15 years), LV Board (30 years), HV Cables (40 years), LV cables (35 years), 11kV poles switches (35 years), Air Break Switches(35 years)

Electrical EquipmentFrequency Distribution Substation EquipmentsFour Years Intake Substation EquipmentsTwo Years 11kV Overhead LinesTwo Years Wall BoxesThree Years Substation Civil Structures Based on the annual inspection of S/S Maintenance Section, urgent repairs will be carried out by Civil Unit. For those substations which are ten years or older, a five yearly inspection is carried out by civil unit. Block work enclosure for package units and replacement of wooden doors is on going. Maintenance Criteria

3. Replacement of 20 km of service twin wires. 4. Maintenance of 1,000 Substations. The target will be increased to 4,000 Substations (S/S) for 2012, Inspection of all overloaded Substations with emphasis on equipment with history of repeated faults. 6. Replacement of 200 units of transformer RMUs and LV Panels in the Substations. 7. Inspection and maintenance of 11 kV circuits terminations in Primary S/S, and in coordination with Transmission Directorate program. Nov 2011 DecJan 2012 FebMarAprMayJun AugSepOctNovDec Inspection and Overall of All 11kV O/H Lines 2. Maintenance of 15,000 Wall Boxes Maintenance Program

8. 11kV Partial Discharge measurements for feeders whose load is more than 300Amp. 9. Upgrade Transformers of which loads exceed 80% of it capacity. 10. Verifying functionality of 11kV protection system in RMUs. 11. Replace any RMUs of which fault current capacity is lower than 350MVA. 12. Install Moulded Case Circuit Breakers (MCCB) at Customer side. 13. Using Mini Feeder Pillars for the 400 Volts N/W. 14. Activate/ install new Earth Fault Indicators (EFIs). 15. Procurement of advanced HV Cable Fault locating equipment. Maintenance Program

HV / LV Reinforcement & Replacement Program o HV reinforcement 43 o HV cable replacement 5 o LV reinforcement 496 o LV replacement 71 o Uprating transformer from 1000kVA to 1500KVA 81

11kV Cable Fault Elimination  Partnership with Electricity Distribution Directorate  Pre-qualification of Contractors  Work Specifications / Job Catalogue  Training on proper practices - Contractors  Cable Joint procedures / Tools  Procedure for Contractor reporting of materials defects  Qualification of Supervisors/inspectors  Supervisors Procedure and List of Actions by the Supervisors  Maintain proper record of Joints/Cables? Tagging system  Procedure for Supervisor reporting of materials defects /bad workmanship  Training on proper practices – EDD Supervisors

 Automation of RMU Operations  Automation of Earth Fault Indicators  MCCB (Moulded Case Circuit Breakers) to control unauthorized load  To replace the LV Underground joints with Mini Feeder Pillars  Activation of CASCADE system (Computerised Maintenance System)  Utilization of Vehicle Tracking System Improvement Program

SAIFI, SAIDI, CAIDI Targets The number of interruptions 2011 and 2012  The interruptions in 2012 increased due to unauthorised loads.

SAIFI, SAIDI, CAIDI Target  Significant improvement is registered in SAIFI & SAIDI in 2012 over (April-May-Jun-Jul) 2012 (April-May-Jun-Jul) % Improved Target SAIFI 0.7 interruptions/customer 0.2 interruptions/customer 71.43% 0.5 interruptions/customer SAIDI 107 minutes/customer 77 minutes/customer 28.04% 25 minutes/customer CAIDI 143 minutes/interruptions 379 minutes/interruptions % 50 minutes/interruptions

Recommendations  Learning from the current experience and decide what to do based on our experience  People Drive Performance – enabling more people across the enterprise to increase competitive advantage  Adaption of 3 skilled capabilities (Monitoring, Analyse, Plan) Superiority in Monitoring – The monitoring capabilities will allow to execute on strategy and to increase the competitive advantage by improving on benchmarks on day-to-day operations. Superiority in Analyse – The analytic capabilities can be leveraged to enhance monitoring and planning capabilities. Superiority in the Plan – The capability in plan can attain the power to compete and to increase monitor plan & budget forecasts more broadly across the board.

T H A N K Y O U