Y2K Concerns: Don't Neglect T&D Operations

Transmission & Distribution World July 1998

By Chuck Newton, Automation Editor

After scanning recent headlines and listening to testimony from congressional hearings, I get the impression that the electric utility industry, both in the United States and abroad, is flirting with catastrophe as we approach the millennium. Dire predictions have been made by a number of "observers" in whose collective opinions, the majority of electric utilities are "not prepared" for the changeover from 1999 to 2000.

For T&D managers, there are software and embedded hardware concerns to ponder. The bigger problem may be in the "mix" of field devices. Some of the millions of such devices now being installed are of recent vintage, likely with embedded digital or solid state electronics, while some of the other equipment are older electro-mechanical devices. A fundamental question concerning these devices is whether or not dates and times are used in conjunction with activity or event data acquisition, and if so, where are the points at which date information is collected, routed and processed?

Year 2000 compliance issues are much broader for most organizations than answering "What can we expect to happen in the control center at the stroke of midnight on Dec. 31,1999?" As one web site information page (NETRIX) points out, several related dates could trigger serious problems beginning as early as the end of 1998.

The IEEE draft "Year 2000 Terminology" also points out the multi-faceted date issues facing operations and utility IS groups. A second IEEE draft, "Year 2000 Test Methods," is also in the works, so some help is on the way. Such help is not without its costs, however. EPRI's Y2K Embedded Systems Program, for example, is geared to electric utilities, and has an initial membership fee of US$75,000. This program provides members with information sharing, workshop attendance and related services. Compliance "solutions," however, are not guaranteed.

If we look at basic problem solving techniques and incorporate elements of the scientific method and formal systems analysis, we can take some steps that may well result in timely and successful "compliance" initiatives. First, utility management needs to fully understand the situation that confronts the utility's data and time-oriented technology base. The need for management awareness and resulting action planning is critical. One key is to ensure that T&D is included in the utility plans for Year 2000 compliance. While this sounds like a "no-brainer," nearly one quarter of IS senior officials told us that their compliance plans do not include any funding or resources for embedded systems.

Secondly, take stock in the T&D information technology assets, many of which are imbedded systems likely to be under the control of Operations departments. These assets may not have been included in the IS department's Year 2000 compliance review program. Among the many device types that could be date/time oriented and need to be evaluated and tested are relays, meters, switches and other similar devices found in substations, and along the T&D grid infrastructure.

Next, contingency plans must be formulated. The need for such planning, together with the design of effective work-arounds, development of usable back-up methods and procedures, should be self-evident. We need to prepare and validate such plans for our mission-critical systems (EMS, SCADA, DCS), sub-systems (such as those found in the substation or in the Engineering Department), and system elements (an array of data acquisition devices, including remote terminal units, programmable logic controllers and other substation-based equipment and field devices). Remember, both hardware elements and software components are suspect at this point.

The fourth step involves solution development or remediation. We need to develop approaches to resolve whatever problems have been uncovered in the T&D asset/inventory assessment from the second step above. Develop actual solutions, some maybe as simple as device/subsystem or system replacement, or upgrading or bypassing the same. Redevelop software and modify computers and communications links as required. Remember that the weakest "date-oriented" link in the system could cause failure. Keep in mind that no utility is an island unto itself. Check out how neighboring utilities and regional pool operations are coming with their Year 2000 compliance programs.

After this step, we need to test our work-arounds, or software patches, or our chip fixes and validate that the fixes will work. Finally, these validated solutions need to be implemented.

Most investor owned utilities are budgeting from US$1 million-US$10 million on Year 2000 compliance activities. Unfortunately, most of that funding (75%) is earmarked to ensure date compliance of the administrative and business management systems. The remaining share is allocated for embedded systems such as those supporting generation, transmission and distribution activities.

If we can work with time zone changes twice each year in all of our time-based monitoring and control activities, implement complex PEX/ISO systems without losing a beat, operate sophisticated energy management systems with elements from multiple vendors that speak different protocols, then the electric utilities of the world can successfully marshal the resources required to meet the challenge of Year 2000 compliance.