Practices and Regulator Requirements to Collect and Compute Reliability Indices
Name / JAVIER AMANTEGUI / Session / 2
Company / IBERDROLA DISTRIBUCION / Block / 4
Address / C/.Gardoqui, 8 / Question n° / 12.1
48008 BILBAO - SPAIN / Language used on the floor / SPANISH
Phone / 34944663482 / Accompanying visuals on file ? / YES .ppt
e-mail /
Practices and regulator requirements to collect and compute reliability indices
In Spain, the aspects concerning Quality of Supply are defined in regulations RD 1955/2000 and ECO 797/2002.
These regulations establish the Availability of Supply requirements regarding indices and limits. Two kind of limits are defined for Zonal Quality ( by “Province”) and Individual Quality. In case of non-fulfilment of individual quality, discounts have to be applied to customers .
Zonal quality
URBAN / SEMI-URBAN / CONCENTRATED RURAL / DISPERSED RURALTIEPI
(Equivalent interruption time) / 2 / 4 / 8 / 12
Percentile 80% / 3 / 6 / 12 / 18
NIEPI (>3 min)
(Equivalent interruption number) / 4 / 6 / 10 / 15
Individual quality
URBAN / SEMI-URBAN / CONCENTRATED RURAL / DISPERSED RURALMV / Hours (No.) / 4 / 8 / 12 / 16
Int. (No.) / 8 / 12 / 15 / 20
LV / Hours (No.) / 6 / 10 / 15 / 20
Int. (No.) / 12 / 15 / 18 / 24
Regulation also determine the requirements to be satisfy by the “Continuity of Supply Measuring System” used by distribution companies. These procedures have to be homogeneous among different utilities and must save the information needed in order to be audited .
Logically these requirements have obliged the Spanish utilities to make very important efforts.
With reference to IBERDROLA, this adaptation has been carried out through an internal Project on Quality of Supply, which has been developed mainly in three activities:
· Connectivity: Electric connectivity between each customer and the corresponding distribution transformer has been established, for all the 9.2 million customers.
· Systems adaptation: As explained in paper 3.35, both technical and commercial systems have been modified in order to calculate individual quality of each LV customer and the consequent invoice discount in case of non-fulfilment.
· Operative procedures adaptation, so that process can be audited. Basically it implies that support documentation must be kept to justify some aspects such us:
§ Registration of calls from customer at interruptions beginning
§ Automatic operation registered by the SCADA system
§ Manually introduced events and data
§ Customer notification in case of planned interruptions
§ Documentation of interruption caused by third parties, at which distribution companies are exonerated from responsibility.
As mentioned above, this adaptation has been performed by IBERDROLA within a large internal project. This project have lasted 4 years and more than 1.000 people have been involved.