II SIM Training and Development on Electrical Metrology

These Tutorials/courses are for SIM members. However, some registration will be made available to Metrologia 2011 participants.

Introduction

About half of all manufactured products in the world is accounted for by individual items such as aircraft, motor vehicles and computers, together with their component parts. The other half mostly comprises commodities. About half of the former is in the automobile industry, other important sectors being aerospace and instrumentation. For most of these products their performance and perceived quality, and hence their commercial success, is determined by how well they are made. Electrical technology is increasingly being used in manufactured products. The performance of such products is therefore often evaluated by measuring to what extent the electrical quantities depart from specifications. The field of electrical metrology is also important in the performance evaluation of the electrical power transmission and distribution network of each country. Several electrical quantities need to be measured traceably to generate and distribute electrical power safely, economically and attending quality requirements. International telecommunication systems work reliably and efficiently, but for high rates of data transmission time scales across the world must be closely coordinated and must not fluctuate from microsecond to microsecond, from minute to minute or from day to day. In addition, traceable radio-frequency measurements need to be done to ensure the security and quality of the communication network.

 This is what we call electrical metrology. All these measurements need to be reliable and traceable to a National Metrology Institute (NMI) in each country. This traceability is ensured by periodic calibration of industry standards in the National Calibration Network of each country. Also, the calibration network standards are sent to the NMI to be calibrated periodically. In order to provide confidence among the traceability chains of each country, international comparisons on electrical quantities are held periodically among the several NMIs of the respective Regional Metrology Organization (RMO). A total of five RMOs have been setup in the world. The Inter-American System of Metrology (SIM) is the RMO of the Americas.

 Inter-American System of Metrology (SIM)

 The Inter-American System of Metrology (SIM) resulted from a broad agreement among national metrology organizations from all 34 member nations of the Organization of American States (OAS). Created to promote international, particularly Inter-American, and regional cooperation in metrology, SIM is committed to the implementation of a Global Measurement System within the Americas, in which all users can have confidence.

The objectives of SIM are: (a) cooperate in the development of NMIs in each country in the region; (b) contribute to the development of measurement infrastructure required to promote equity in trade; (c) foster competitiveness and quality of the manufacturing sector in order to promote trade and commerce; (d) identify sectors and institutions that can conduct specific multinational activities in support of metrology; (e) contribute to the development of metrological infrastructure required to protect the environment and to promote the general well-being of the population, including its health and safety.

For this purpose, measures taken by the members will help to achieve the following: (a) the establishment of national and regional measurement systems; (b) the establishment of a hierarchy of the national standards of each country and their linkage with regional and international standards; (c) the compatibility of results obtained from measurement processes performed in laboratories within the system; (d) the development of competitive technical and scientific personnel; (e) the collection and distribution of technical and scientific information and documentation; (f) the linkage with the several international organizations specialized in the area of metrology.
SIM has specific working groups, each dealing with specific measurement quantities.  For more details consult http://www.sim-metrologia.org.br

SIM Electricity and Magnetism Metrology Working Group

The SIM Electricity and Magnetism Metrology Working Group (SIM EM MWG) is concerned with (a) promoting closer collaboration among SIM laboratories in projects related to electrical metrology and measurement services, (b) optimizing the use of EM resources and services of the SIM laboratories and foster the development of these EM services so they may satisfy regional demands, (c) documenting the traceability of EM measurement systems in SIM laboratories and encourage the regional acceptance of this traceability, in accordance with international definitions and trends, (d) evaluating the current status of the ongoing international comparisons on electrical quantities among the SIM laboratories and studying the future EM comparison needs of SIM laboratories, (e) supervising SIM EM comparisons, taking the necessary measures to expedite them in case of delays, (f) harmonizing procedures proposed by the SIM EM MWG to perform EM comparisons of SIM laboratories and (g) evaluating the training and development needs of SIM laboratories.

In order to accomplish the above goals annual meetings have been organized attached to training and development events.

II SIM Training and Development on Electrical Metrology

The main objective of the II SIM T&D on Electrical Metrology is the training and capacity building of country representatives in the field of electrical metrology. For that it has been envisaged the organization of tutorials on electrical metrology, and the participation at the XVIII IMEKO TC4 Symposium and the IX International Congress on Electrical Metrology (IX SEMETRO) to be held in September 2011 in the city of Natal, in Brazil.

The tutorial concentration will be on measurements related to electrical quantities.

It is expected that the tutorials will promote the strengthening of electrical metrology activities within the region, increasing the recognition and reliability of metrological services that support international trade. For that, the methodology proposed consists of, besides the exchange of experience among participants, the multiplication of such experience in their countries, through national meetings, seminars and other internal activities.

Audience

Scientists, engineers, managers, auditors, consultants and representatives from universities, governmental agencies, industry and commerce, calibration and test laboratories, and national metrology institutes.

Technical Programme

Tutorial 1: Advanced Resistance Metrology

This Tutorial covers several concepts in DC resistance metrology as practiced in National Measurement Institutes (NMIs). Measurement uncertainty and its sources are developed from a practical and scientific point of view. Methods of analyzing uncertainty in direct current comparator (DCC) and active arm bridge (AAB) systems are discussed, and results are compared to the measurement methods used with two types of cryogenic current comparator (CCC) bridges. The development of these CCC methods is extended to include measurementsof the quantized Hall resistance (QHR) standard. Finally, the application of these concepts to the maintenance of the SI ohm, international comparisons, and recent resistance comparisons between NMIs and the BIPM are explained.

Language: English

Date/time: 27 September / 14h 20min – 16h

Instructor: Rand Elmquist (NIST/USA)

Room: CEDRO 6 (To confirm)

In 1986, Randolph E. Elmquist joined the National Institute of Standards and Technology in Gaithersburg, MD, where he has contributed to absolute measurements of the Watt and the Ohm. His work in these areas has included the development of improved calculable coaxial resistors and cryogenic current comparators. He has been involved in international activities through the Inter-American System of Metrology (SIM) and has helped to develop information technology tools for NIST. Currently he leads the Metrology of the Ohm project and NIST research efforts on quantum Hall effect standards based on graphene.

Tutorial 2: High Accuracy AC-DC Transfer Measurements and Quantum AC Voltage Standards

This tutorial will consist of two parts. The first part will discuss selected topics in high accuracy ac voltage and current measurements. These include Fast Reverse DC Source measurements and other auxiliary acdc techniques, as well as issues associated with shielding, grounding, cabling, and loading. The second part will concentrate on two methods used in the design of the AC Josephson Voltage Standard and the progress achieved thus far in establishing a quantum-based absolute AC Voltage Source.

Language: English

Date/time: September 29 / 10h 40min -12h  20min

Instructor: Peter Filipski (National Research Council - NRC/Canada)

Room: CEDRO 6 (To confirm)

Piotr (Peter) S. Filipski is a Senior Research Officer in the Institute for the National Measurement Standards, National Research Council Canada (NRC).  He received the M.S. and Ph.D. degrees in electrical engineering from the Silesian Technical University (STU), Gliwice, Poland, in 1972 and 1977, respectively. From 1971 to 1981, he was with STU. In 1981 he joined the staff of the Power Engineering Section of the NRC Electrical Engineering Division, where he was involved in development of measurement techniques and instrumentation for measurement of active and reactive power, particularly in nonsinusoidal situations. Since 1992 he is with the Electrical Standards Group where his research is aimed at the high precision ac-dc transfer measurements.

 

Tutorial 3A: AC-DC Thermal Transfer Standards

The primary standards of alternating voltage and current are the thermal converters. In INTI they are used together with range resistors for the voltage scale and with shunts for the current scale. The fundamentals of the thermal converters, the procedure for defining the voltage and current scales and the shunt design will all be described in this tutorial. The advances in the design and construction of new thermal converters at INTI will also be shown.

Tutorial 3B: Electric Power and Energy Measurements

The measurement of electric power and energy is highly important for the community and for a sound strategic planning. A survey of the electric power measurement systems placing emphasis on the power standard developed by INTI some years ago and the current power and energy measurement systems based on sampling techniques will be presented in this tutorial. Some proposals for the measurement of power and energy at high frequencies will also be discussed.

Language: Spanish

Date/time: September 29 / 14h - 15h (Tutorial 3A) / 15h - 16h (Tutorial 3B)

Instructor: Lucas Di Lillo (Instituto Nacional de Tecnología Industrial - INTI/Argentine)

Room: CEDRO 6 (To confirm)

Lucas Di Lillo was born in Argentina in 1970. He received a degree in Physics from the Universidad de Buenos Aires, Argentina, in 2001. In 1994, he joined the Instituto Nacional de Tecnología Industrial (INTI), Argentina, where he was assigned to dielectric measurements. From 2000 to 2008 he worked in the AC-DC Transfer and Electric Power Laboratory at INTI. In these areas he developed new AC-DC voltage and current step-ups and participated representing INTI in several International comparisons organized by SIM and CCEM. Currently he is working in the design of a new thermal converter using resistive sensing. Since 2008 he is the head of the Electricity Division at INTI, whose major activities are the calibration and measurement from low voltages and currents (from DC to 1 MHz) to high voltages (up to 600 kV).

Venue

The II SIM T&D on Electrical Metrology will be held in the same venue of Metrologia 2011 in Natal, Brazil. Detailed information will be provided later.

Tutorial Notes

The SIM member participant in the II SIM T&D on Electrical Metrology will receive tutorial notes whose details will be provided later.

Contact

More Information about courses, registration and for further details on the programme contents, please contact Dr. Gregory Kyriazis at gakyriazis@inmetro.gov.br