2018 General Rate Case

Transcription

1 Application No.: A.1-0- Exhibit No.: SCE-0, Vol. 0 Witnesses: M. Flores B. Tolentino A (U -E) 01 General Rate Case ERRATA Transmission & Distribution (T&D) Volume 0 Substation Construction & Maintenance Before the Public Utilities Commission of the State of California Rosemead, California September 1, 01

2 SCE-0: Transmission & Distribution Volume 0 - Substation Construction & Maintenance Table Of Contents (Continued) Section Page Witness. Substation Maintenance Crew Supervision (Portions of GRC Accounts.10 and.10)...1 Cost Forecast...1. Substation Work Performed by Power Production (GRC Accounts.10 and.10)...1 Cost Forecast...0 F. Grid Operations O&M Expenses Operating the Grid Control Center (GCC) (GRC Account 1.10)...1 Monitoring and Operating SCE s Bulk Power System...1 Coordinating Planned Outages... Developing and Maintaining Procedures... (1) Cost Forecast.... Operating the Substation and Distribution System (GRC Accounts.10 and.10)... Cost Forecast... G. Substation Capital Expenditures Substation Capital Maintenance... Cost Forecast.... Substation Protection and Control Replacements...0 Distribution & Transmission Protection and Control System Replacement...0 Digital Fault Recorder Replacement...0 Cost Forecast...1. Subtransmission Relay Upgrade Program... -ii-

3 SCE-0: Transmission & Distribution Volume 0 - Substation Construction & Maintenance Table Of Contents (Continued) Section Page Witness -iii Overview... Program Necessity... d) e) f) Program Description... Program Alternatives... Program Benefits... Cost Forecast.... Substation Spare Parts... Cost Forecast.... Substation Tools and Work Equipment...0 Cost Forecasts...1. Substation Physical Security... Copper Theft Program... Tiered Physical Security Systems... (1) () Tier 1 NERC CIP-01 Compliance Program... Tier - Physical Security Program... Cost Forecast.... Operational Facilities Maintenance... Substation and Switching Center Facility Maintenance... Control Building Modernization... Cost Forecast... II. SUMMARY OF GRC ACCOUNTS...0 A. GRC Account

4 Figure I- Substation Construction and Maintenance GRC Authorized Variance Summary 01 Capital (CPUC-Jurisdictional Nominal $Millions) The 01 recorded expenditures for substation construction and maintenance capital was approximately $0 million over the amount authorized. The major cost increases were due to the modernization of our operational facilities (substation control rooms) where our system operators are located, compliance requirements for physical security, spare parts inventory replenishment, and substation maintenance replacements including Coupling Capacitor Voltage Transformers (CCVT), disconnect switches, power cable and ground grid upgrades. E. Substation Inspection and Maintenance Expenses 1. Circuit Breaker Inspection and Maintenance (Portions of GRC Accounts.10 and.10) The primary function of circuit breakers is to isolate problems on the electric system before they can cascade into a complete system outage. Circuit breakers are the first line of defense in 10 Refer to WP SCE-0 Vol. 0, pp (Capital Authorized vs. Recorded).

5 Figure I- Substation Construction and Maintenance GRC Authorized Variance Summary 01 Capital (CPUC-Jurisdictional Nominal $Millions) 1 The 01 recorded expenditures for substation construction and maintenance capital was approximately $0 million over the amount authorized. The major cost increases were due to the modernization of our operational facilities (substation control rooms) where our system operators are located, compliance requirements for physical security, spare parts inventory replenishment, and substation maintenance replacements including Coupling Capacitor Voltage Transformers (CCVT), disconnect switches, power cable and ground grid upgrades. E. Substation Inspection and Maintenance Expenses 1. Circuit Breaker Inspection and Maintenance (Portions of GRC Accounts.10 and.10) 10 The primary function of circuit breakers is to isolate problems on the electric system 11 before they can cascade into a complete system outage. Circuit breakers are the first line of defense in 10 Refer to WP SCE-0 Vol. 0, pp (Capital Authorized vs. Recorded). A

6 1 and develops and implements corrective plans accordingly. The scope varies based on site factors, but the general goal of the program is to develop a standardized deployment to improve SCE s facility security maintenance and management. c) Cost Forecast Figure I- Substation Physical Security Multiple WBS Elements CET-ET-IR-ME (Portion) Recorded /Forecast (Total Company Constant 01 and Nominal $000) Nominal 01=11, 01=1, Constant 01=1,01 01=1, 10 The WBS element CET-ET-IR-ME (portion) captures these programs expenditures in the Transmission Substation portion of the projects. Broadly, these expenditures are required to fund physical security enhancements such as: providing AC/DC power feeds to security equipment and lighting, providing ballistic barriers around critical equipment, installing concealment, and replacing or modifying substation fences and gates. The breakdown of the forecast cost per program described above can be found in Table I-1. Refer to WP SCE-0 Vol. 0, pp WBS CET-ET-IR-ME (portion), CET-PD-OT-FO (portion), CET-PD-IR-SP (portion).

7 01=$11, 01=$1,0 Table I-1 Substation Physical Security Enhancement Programs Recorded 01-01/Forecast (Nominal $000) Number of Substations Copper Theft /year from 01 and on $ $,0 $,11 $,1 $,0 $, $,0 Tier 1: Pre CIP 01 & CIP 01 $ 10,1 $ 1, $ 1,10 $,0 $,0 $ $ Tier $ $ $ $ $,0 $ 1,0 $ 1,00 Total $ 10,1 $ 1, $,1 $ 1,1 $,0 $,0 $, SCE plans to implement eight substation projects per year from to 01=$11, enhance 01=$1, fencing, gate, and lighting under the Copper Theft Mitigation program. These costs are determined by the number of feet of new fencing and the lighting needed to deter further copper theft. For Tiered Substation Physical Security programs, SCE will focus on completing the pre-cip-01 pilot site enhancements in 01. In 01, SCE will complete the majority of Tier 1 (CIP-1) site enhancements, with completion of all remaining work in 01. From 01 00, SCE will complete enhancements for Tier - sites. SCE used historical average costs from substation projects containing similar scope items as well as pilot site vendor quotes to develop the Tiered program forecast, inconsideration of each site s specific requirements.. Operational Facilities Maintenance This work category includes two distinct activities as described below. a) Substation and Switching Center Facility Maintenance The portfolio of SCE substations and switching centers were built between the 10s and the 10s. These substation facilities have aged and many require increased maintenance. Periodically, we must replace or rebuild failed or failing equipment at these substation facilities, such as heating, ventilating, and air conditioning (HVAC) systems, plumbing, electrical, roof replacements, fencing, motorized gates, fuel tanks, carpet, flooring, and asphalt or concrete driveways which undergo regular wear and tear. The historical and 01 forecast cost are allocated within this WBS account CET- PD-OT-FO. Starting in 01, facility maintenance costs will be recorded in the WBS account COS-00- See WP SCE-0 Vol. 0, pp. - (Substation Tiered Physical Security Forecast) / WP SCE-0 Vol. 0C pp (Substation Tiered Physical Security Forecast Confidential).

8 1 Nominal 011=1, 01=, 01=, 01=, 01=, c) Cost Forecast Figure I-10 Operational Facilities WBS Element CET-PD-OT-FO (portion) Recorded /Forecast (Total Company Constant 01 and Nominal $000) Constant 011=1,0 01=,1 01=,1 01=, 01=, In 01, SCE launched a program to renovate the aging facilities. SCE evaluated the project scope and included additional substations and grid control centers to maintain control model consistency and address immediate space needs for new relay and control schemes and impending NERC CIP compliance. SCE concluded the evaluation in 01 and identified various control building modification or replacement projects, which drove the increase in capital costs in 01 and 01. New control buildings were constructed at Devers, Lugo, Valley, and Vista substations, and expansions of existing control buildings were initiated at El Nido and Rector Substations. Modernization of control rooms and Distribution Operations Centers (DOC) at Mira Loma, Santa Ana, Lighthipe and Ventura, Eldorado, Mesa, and Vincent substations, as well as SCE s Grid Control Center and Alternate Grid Control Center, were also included for system consistency to allow seamless transfer of operational jurisdictions and reduce operator error. The control room and building designs incorporate NERC CIP version standards and SCE Corporate Security policies to address physical access controls, meet ADA Refer to WP SCE-0, Vol. 0, pp

9 1 accessibility requirements, and provide space for an IT room, security room, break room and lockers. The control room includes the system operator ergonomic consoles and a display wall system that allows all operators to project the Outage Management System, Energy Management System and Distribution Management System (OMS/EMS/DMS) for situational awareness during routine and emergency operating situations. An updated phone system that can transfer operational jurisdiction including telephone communications during system emergencies to other switching centers or DOCs was also installed to replace to existing system that had reached the end of its useful life. As shown in Table I-1, which is a subset of the costs represented in Figure I-10, SCE expects to complete these Control Room Modernization upgrades by the end of 01 with forecasted spend of $10. million. Table I-1 Control Room Modernization Recorded/01 Forecast (Total Company Nominal $000) (Nominal $000) Recorded Forecast Control Room Modernization Total $0 $0 $,0 $, $,11 $10,0 011=$0 01=$0 01=$,0 01=$, 01=$, See WP SCE-0 Vol. 0, pp. - (Control Room Modernization Cost Breakdown & Control Building Scope of Work).