Submitted to ICHQP 2008 1 Abstract —This paper presents the status of the work, by April 2008, in C4.110, a joint working group by CIGRE, CIRED and UIE. The scope of the working group is to gather technical knowledge on the immunity of equipment, installations and processes against voltage dips, and to use this knowledge in the further development of methods and standards. The activities ofthe working group are divided in seven “chapters”. Chapters 1 and 7 are introduction and conclusions, respectively. Chapter 2 gives a general description of voltage dips as they appear at the terminals of sensitive equipment. Chapter 3 describes the performance of equipment and processes during voltage dips. This chapter also includes recommendations on the design ofprocesses. In Chapter 4 the results from Chapter 2 and Chapter 3 are combined to set requirements for the dip characteristics that should be included in immunity testing. Chapter 5 is the data gathering chapter, covering data on voltage-dip statistics at different locations, but also data on the economics of equipment immunity and testing. Finally, in Chapter 6, recommendations for immunity objectives will be given. Important contributions of the working group are: a check- list of voltage dip characteristics to be used early in the design ofequipment; a methodology to assess the performance of a complete installation and to include voltage-dip performance in the design of the installation; recommendations for characterization testing of equipment against voltage dips; recommendations for voltage-dip immunity of equipment. Index Terms — power quality, electromagnetic compatibility, voltage dips, equipment immunity, process design. I. INTRODUCTIONjoint working group on voltage dip immunity ofequipment is supported by CIGRE, CIRED, and UIE. The scope of the working group is to gather technical knowledge on the immunity of equipment and processes against voltage dips and to use this knowledge in the further development of methods and standards. M.H.J. Bollen is with STRI AB, 77180 Ludvika Sweden and with Luleå University of Technology, 931 87 Skellefteå Sweden (E-mail: [email protected]). Ian McMichael is with Power Quality Solutions, East Malvem, Vic 3145, Australia. Mark Stephens is with EPRI, Knoxville, USA, Kurt Stockman is with Hogeschool West Vlaanderen, Kortrijk, Belgium, Sasa Djokić is with University of Edinburgh, Edinburgh, UK, Francisc Zavoda is with IREQ, Montreal, Canada, Bill Brumsickle is with Soft Switching Technologies, USA, Alex McEachern is with Power Standards Lab, USA, José Romero Gordon is with Endesa, Sevilla, Spain, Gaetan Ethier is with Hydro Quebec, Montreal, Canada, Robert Neumann is with Qualitrol, UK. The working group was formed during the autumn of 2005 and started its activities early 2006. Two meetings were held in 2006, three in 2007 and one in 2008. Two further meetings are scheduled for 2008 and one for early 2009. Starting from a core of about 10 people, the group has been growing steadily and currently consists of 40 persons: 22 regular members and 18 corresponding members. The members have the following background: 13 network operators; 10 academics and consultants; 6 industrial customers; 5 equipment manufacturers; 3 regulators and 3 persons with extensive experience on immunity testing of equipment. For more information, the reader is referred to the working-group website [1]. The scope and status of the working group were presented earlier in [2][3][4][5]. This paper presents the status of the working group activities and preliminary results after 6 meetings, by April 2008. It should be clearly noted that this paper is not a working group document and that the final results and conclusions may deviate from the contents of this paper. II. SCOPE OF THE WORKING GROUPThe results of the work will be delivered in the form of a technical report, in January 2009. This report will provide guidelines for power companies dealing with customers, equipment manufacturers and other interested parties, and give recommendations for future IEC standardization. To organize the work on this difficult but interesting subject, it was decided to split up the activities into a number of“chapters” that should later correspond to the chapters in the working-group report. 1. Introduction. 2. Voltage dips. 3. Equipment and processes. 4. Immunity testing. 5. Statistics and Economics. 6. Immunity objectives. 7. Conclusions. These chapters, with the exception of “Introduction” and “Conclusion” are shown in a systematic and chronological way in Fig. 1. CIGRE/CIRED/UIE JWG C4.110 - Voltage Dip Immunity of Equipment in Installations – Status April 2008 Math Bollen, Ian McMichael, Mark Stephens, Kurt Stockman, Sasa Djoki ć, Francisc Zavoda, Bill Brumsickle, Alex McEachern, José Romero Gordon, Gaetan Ethier, Robert Neumann A
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XI. REFERENCES
[1] http://www.jwgc4-110.org[2] M. Bollen, M. Stephens, K. Stockman, S. Djokic, A. McEachern,
J.Romero Gordon, CIGRE/CIRED/UIE JWG C4.110, voltage dipimmunity of equipment in installations, scope and status of work, Int
Conf on Electricity Distribution (CIRED), Vienna, May 2007.[3] M. Bollen, M. Stephens, K. Stockman, S. Djokic, A. McEachern, J.
Romero Gordón, CIGRE/CIRED/UIE JWG C4.110, Voltage dip
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in installations, scope and status of the work, April 2008, UIE Congress,Krakow, Poland, May 2008.
[6] S. Djokic, M.H.J. Bollen, Dip segmentation method, this conference.
[7] European Regulators’ Group for Electricity and Gas, Towards VoltageQuality Regulation In Europe - An ERGEG Public Consultation Paper.
Ref: E06-EQS-09-03, 06 December 2006.[8] European Regulators’ Group for Electricity and Gas, Towards Voltage
Quality Regulation in Europe - An ERGEG Conclusions Paper, ERGEG
document E07-EQS-15-03, July 2007.[9] European Regulators’ Group for Electricity and Gas, ERGEG Public
Consultation Towards Voltage Quality Regulation in Europe -Evaluation of the Comments Received, ERGEG document E07-EQS-15-