Third Benchmarking Report on Quality of Electricity Supply

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ADDITIONAL INFORMATION 1.2 – DATA ON SHORT INTERRUPTIONSThe frequency of short interruptions (between 1” and 3’) is not available to the French regulator fordistribution networks. However, other data are available. The distribution company reports howmany customers (in percentage) had between 0 and 5 short interruptions during the year, howmany customers had between 6 and 10 short interruptions during the year, how many between 11and 15, 16 and 20, 21 and 25, 26 and 30, and more than 30 short interruptions during the year.This information is collected for both MV and LV customers. Italy adopts a similar approach, as distributioncompanies are required to give the Regulator, each year, data on the worst-served customersin the following format (the thresholds for number of long and short interruptions varyaccording to the type of territory; the example refers to urban districts).Example of format for worst-served analysis used in Italy (urban districts)Up to 1 longinterr/year2 longinterr/year3 longinterr/year4 longinterr/year5 or more longinterr/yearTotalUp to 1 shortinterr/year2 or 3 shortinterr/year4 or 5 shortinterr/year6 or more shortinterr/yearTotalContinuity indicators regarding planned interruptions (annual frequency and duration per customer) are available frommost of the countries surveyed, with the exception of Poland and Latvia. Indicators for the Czech Republic will beavailable beginning in 2007. In Estonia, although planned interruptions are recorded, indicators of averagefrequency and duration are not available. France has only an indicator of average duration per consumer, in Norwaythe information is on the ENS per MV transformer, and Spain uses TIEPI as an indicator for planned interruptions.The regulators have established rules for the timing of the advance notice to be given for a planned interruption only inapproximately half of the countries surveyed (Austria, Belgium (Wallonia), Czech Republic, Estonia, Hungary, Ireland,Italy, Portugal, Spain and Great Britain) (as set out in Annex 2, planned interruptions rules). This varies between 1 day(in Italy and Spain) and 15 days (in Czech Republic). In most of these countries the procedure for notification is notindicated: in Ireland the notification must be by mail, and in Spain by any verifiable means to customers above 1 kV,and by advertising posters placed in visible spots with regard to all other consumers and by means of two of the mostwidely circulated printed media in the province; in all other countries the procedure is only indicative or left to thecompanies (newspaper, websites, newsletters are all acceptable means of communication).In the other half of the surveyed countries different situations are found: in Finland, Norway and Sweden the only ruleis to give an advance warning that enable consumers to be prepared; in France the matter is regulated in detail bycontractual agreements; in Hungary the regulator approves the procedures established by the companies; in Lithuaniathe matter is regulated by the Ministry of Economy; in Greece, Latvia, and Slovenia the regulators have not addressedthe subject yet.11<strong>Third</strong> <strong>Benchmarking</strong> <strong>Report</strong> on Quality of Electricity Supply – 2005 · Chapter 1
ADDITIONAL INFORMATION 1.3 – NOTICE TO CONSUMERSIn Italy the minimum time for notice is 24 hours in advance, otherwise the interruptions must beconsidered as unplanned. Should the planned interruption start before the notified timetable (morethan 5 minutes in advance), it must be considered as unplanned. Should the planned interruptionlast longer than notified, the extra duration must be considered as unplanned.In Portugal the Commercial Relations Code, published by ERSE, establishes rules about the noticeto the customer according to the reasons of interruption:· Interruptions for reasons of public interest: the entity responsible for the network must inform,whenever possible, and with a minimum prior notice of thirty-six hours, the customers which maybe affected by the interruption.· Interruptions for service reasons: the entity responsible for the network has the duty to minimisethe impact of the interruptions among customers. For this purpose, distributors may agree withthe clients that will be affected the best moment for the interruption. If the agreement is not possible,the interruptions must occur, preferentially, on Sundays, between 05:00 hours and 15:00hours, with a maximum duration of eight hours per interruption and five Sundays per year, percustomer affected. The entity responsible for the network must inform with a minimum priornotice of thirty-six hours.· Interruptions due to customer responsibility: The supply interruption may only take place following8 days’ noticeNote that in Great Britain an interruption is treated as planned provided that the start of the interruptionis within the period of interruption stated on the notice to the customers.Most of the countries collect continuity indicators for the transmission system, with the exceptionof Austria, Estonia, Greece, Latvia, and Slovenia. The most common indicators used for transmissionare listed in Table 1.5.TABLE 1.5CONTINUITY INDICATORS FOR TRANSMISSIONEnergy not supplied (ENS)Average interr. time (AIT)SAIDI at T-levelSAIFI at T-levelOther indicatorsNoneFI, FR, HU, IE, IT, LT (from 2006), PL, PT, ES, SE, GB, NOBE, FR, IT, LT (from 2006), PL, PT, ES, SECZ, FR, PT, NO (from 2006)CZ, FR, PT, IT, NO (from 2006)total time of interruption: CZ, HUMAIFI: FR, IToutage rate: HUnumb. of incidents: IE, HU, SE, GBAT, EE, GR, LV, SI12Council of European Energy Regulators – Ref: C05-QOS-01-03
Page 1: Council ofEuropeanEnergyRegulatorsT
Page 4: Council ofEuropeanEnergyRegulatorsE
Page 10: CHAPTER 1 - Continuity of SupplyCON
Page 13 and 14: ··utes are defined as “short in
Page 15 and 16: interruptions is very small. AIT is
Page 17 and 18: Interruptions shorter than three mi
Page 19: 1.6.1 Weighting methods used for co
Page 23 and 24: and in Italy the integration of the
Page 25 and 26: 1.6.3 Rules for recording short int
Page 27 and 28: ADDITIONAL INFORMATION 1.8 - AUDITS
Page 29: SAIDI1.7.1 Unplanned SAIDI not attr
Page 34 and 35: FIG 1.7 UNPLANNED INTERRUPTIONS Sho
Page 36: ···There is some evidence to sup
Page 40 and 41: THE USE OF STANDARDS AND INCENTIVES
Page 42 and 43: 2.2.1 Continuity measurement system
Page 44 and 45: Almost all countries having adopted
Page 46 and 47: 2.2.3 Findings I: Quality measureme
Page 48 and 49: The incentive is symmetric and rela
Page 50 and 51: In Sweden, a quality of supply inde
Page 52 and 53: Regulators’ concern with the vola
Page 54 and 55: In Great Britain the regulator (Ofg
Page 56 and 57: ··A regime to avoid overquality i
Page 58 and 59: ··gets”; introduction of an upp
Page 60 and 61: FIG 2.4/b CONVERGENCE EFFECT OF THE
Page 62 and 63: 2.4 Continuity standards at single-
Page 64 and 65: Observation suggests that there is
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E SIStandard for long interruptions
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introduce single-customer standards
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STANDARDS IN COMMERCIAL QUALITY REG
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Commercial quality regulation attem
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The evaluation of the actual level
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TABLE 3.5MOST FREQUENTLY USED COMME
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the standards relating to a particu
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Quest.2.1.19Supp.1Recomm.✰✰✰
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3.3.3 Problems associated with volt
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the compensation paid by the electr
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Quest.2.1.23Supp.0Recomm.✰✰✰D
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answered (for instance Portugal and
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countries who supplied data have a
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metering problems, customer’s que
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step. CEER recommends that member s
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CHAPTER 4 - Voltage Quality Monitor
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For the rest of the voltage quality
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·In Czech Republic a monitoring sy
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tion point of single customers: in
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ADDITIONAL INFORMATION 4.2 - POWER
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ator must advise clients connected
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ADDITIONAL INFORMATION 4.3 - CUSTOM
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mandatory such values are applicabl
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ANNEXES - ANNEX TO CHAPTER 1.Sectio
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Appendix - BELGIUM - Wallonia1. Acc
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(CONTINUE) SECTION 2 - PLANNED INTE
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TABLE 3.4 - UNPLANNED INTERRUPTIONS
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TABLE 3.10 - ENERGY NOT SUPPLIED AS
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TABLE 4.2 - VOLTAGE LEVEL ANALYSIS
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The classification of continuity da
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The same pattern emerges with the i
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ANNEX TO CHAPTER 2.Annex 2.1 - Comp
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Quest.2.1.18Supp.0Recomm.✰✰DSO5
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Quest.1.1.9Supp.0Recomm.✰✰✰DS
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3.3.10.4 HungarySupply level in the
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TABLE 3.2INDICATORS1.1.1. Average w
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TABLE 3.3.AINDICATORS2.1.1. Respond
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TABLE 3.3.BINDICATORS2.1.1.Respondi
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TABLE 3.4INDICATORSAustriaBg Flande
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TABLE 3.6 ESTIMATING CHARGES (WORKI
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TABLE 3.10 CONNECTING (SUPPLY AND M
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TABLE 3.14 AVERAGE TIME TO PROVIDE
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TABLE 3.18 METER PROBLEMS (WORKING
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TABLE 3.22 RESPONSE TO CUSTOMER LET
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TABLE 3.27 AVERAGE WAITING TIME IN
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TABLE 3.32 NUMBER OF COMPLAINTS PER
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TABLE 3.38PREPAYMENT METER FAULT (W
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TABLE 3.43NUMBER OF REVISED BILLS P
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ANNEX TO CHAPTER 4.ANNEX 4.1 Voltag
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TABLE 2: NORWAY: Flicker severity l
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TABLE 5: PORTUGAL: for EHV and HV,
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Third Benchmarking Report on Quality of Electricity Supply

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