12012dsadasdas 2012 Annual Report
CONTENTS 1. INTRODUCTION 1
2. MISSIONS AND OBJECTIVES 1
3. PQC MEMBERS 2
4. 2011 PQC ACHIEVEMENTS 3
4.1 PQC Achievements – 1st Meeting …………………….………………………. 3
4.2 PQC Achievements – 2nd Meeting ………………….…………….………….. 4
4.3 PQC Achievements – 3rd Meeting ………………….…………………………. 6
4.4 PQC Achievements – 4th Meeting ………………….…………………………. 7
5. FOLLOW UP THE 2011 PQC RECOMMENDATIONS 10
6. 2012 BULK CUSTOMERS DISTURBANCES 11
6.1 Disturbance Records – Trend Data …………………….……………………….. 11
6.2 Disturbance Records – Causes ………………….…………….………………….. 12
6.3 Disturbance Records – Voltage Levels…………….……………………………. 14
6.4 Disturbance Records – Locations ………………….…………………………….. 15
6.5 Disturbance Records – Impacts From Non-Transmission Parties……… 18
6.6 Key Performance Indicators – KPIs………………….…………………………… 19
6.6.1 Customer Average Interruption Duration Index………………….………. 19
6.6.2 Voltage Dip ……………………….…………………………………………………… 19
7. CONCLUSIONS 21
8. 2012 PQC RECOMMENDATIONS 22
9. 2013 PQC PLAN 23
Appendix (A) 24
12012dsadasdas 2012 Annual Report
1
1. INTRODUCTION
The Power Quality committee (PQC) was formed according to the recommendations of 2004
PQ Workshop held in Riyadh March, 2004. The PQC is a permanent committee with
membership comprising of major industries, institutional firms and utilities such as Saudi
Electricity Company (SEC) and its subsidiaries , chaired by the representative of the hosting
organization.
One of the important recommendations of the 2004 PQ Workshop is to start establishing an
annual report dealing with the existing PQ levels across National Grid SA transmission
networks and its relative impacts upon the bulk industrial customers. The target of the desired
annual report is to:
Exchange information of PQ related topics between all PQC members.
Extract lessons learned from discussing disturbances and fault incidents reported by
SEC transmission systems and reported by bulk customers.
Develop PQ database identifying records of disturbances and their effects upon the
operation of their major industrial customers specifically Saudi Aramco and SABIC
companies.
Recommend for follow up actions so that secure supply system and high quality of
power supply can be verified.
The purpose of implementing the work is to coordinate between all PQC members,
information and experiences exchange, and to ensure secure supply electricity delivered by
National Grid SA transmission networks to the major industrial customers so that adequate
quality of power supply that meets customer's requirements and needs can be obtained.
Yearly, PQC members with the concern of the PQ issues do a comprehensive report
discussing their efforts and their feature plans. During the year of 2012, PQC members have
scheduled four meetings. The assigned meetings were useful where PQ related topics have
been discussed, recent customer or university PQ studies and projects have been
demonstrated, and follow up actions and recommendations have been reviewed.
2. MISSIONS AND OBJECTIVES
PQC will exchange information and technical data and unify procedures related to PQ issues
in the Kingdom through the year of 2012. The Committee will form a good interconnection
tool between SEC and its subsidiaries, the major bulk customers (Saudi Aramco and SABIC),
and Kingdom research institutes. Supplying system disturbances that cause bulk customer's
miss-operations or stop of production will be recorded and analyzed. Identifying and
following causes of disturbances and providing recommendations to enhance the performance
of the supplying systems will also be carried out.
The main objectives of the desired PQC- annual report are:
12012dsadasdas 2012 Annual Report
2
Reporting Disturbances:
The performance of the supplying system will be identified throughout reporting
disturbances that affect the operation of the bulk customers with the transmission
networks. Any event in the power systems, that results in deviation of the supplying
system voltage from the normal (±5 %) and emergency (±10%) conditions are planned
to be collected.
Identifying PQ Problems:
Analysis tools will be executed to identify disturbances, its origin and causes. This
will be useful in providing suitable remedy action to reduce the possibility of
disturbance occurrence.
Recommend Follow up actions:
Following the analysis procedures, certain recommendations might be stated for
specific remedy actions to be followed.
Enhance coordination between all parties:
Coordination between all parties is one of the PQC objectives. Coordination between
transmission supplying system capabilities and bulk customer's needs, exchange
information and experiences, and scheduled meetings between all parties will be
useful to verify the maximum secure operating conditions and decrease the possibility
of disturbance re-occurrence.
Handle PQ database:
Finally, National Grid SA is handling the PQ database (Previous 5 years of data)
required for the evaluation in the PQC annual disturbance report.
3. PQC MEMBERS
Members who are willing and able to commit or engage their organization or institution in
PQC activities consists of:
Saudi Electricity Company (SEC).
National Grid SA.
Electricity and Co-Generation Regulatory Authority (ECRA).
King Abdulaziz City for Science and Technology (KACST).
King Fahd University of Petroleum & Minerals (KFUPM).
Saudi Aramco.
SABIC.
Detail contact information, name, affiliation, contact phone and e-mail of all the PQC
members are listed in appendix (A)
12012dsadasdas 2012 Annual Report
3
4. 2012 PQC ACHIEVEMENTS
PQC has been verifying certain achievements throughout definite schedule meeting during the
year of 2012. Dates, hosts, locations, and PQC discussion points of the assigned meetings are
explained in the following sub-sections.
2012 MEETING SCHEDULE
Meeting # Meeting Date Host Location
1 Mar 07, 2012 SEC Riyadh
2 May 30, 2012 SABIC Eastern Province
3 Sep 19, 2012 Saudi Aramco Eastern Province
4 Dec 26, 2012 KACST Makkah
4.1 PQC Achievements – 1st Meeting
Meeting Discussion Points
The meeting started at 09:30, Mr. Abdulrahman Al-Shabnan, National Grid SA, the meeting
chairman, started the meeting by welcoming all attendees and thanking them for attending the
First Power Quality Committee (PQC) meeting, 2012. Then, PQC members reviewed the
meeting agenda and the following were discussed:
I. Review Last Minutes of Meeting
The last minutes of Meeting were reviewed and action items were discussed as follow:
o Contact SWCC to send representative:
Dr. Ayman Alabduljabbar contacted SWCC to send a representative to
the meetings. PQC chairman will send official invitation to SWCC to
send a representative to the meetings.
o Contact MARAFIQ to send representative:
Mr. Hussain Al-Abbad contacted MARAFIQ to send a representative to
the meetings. PQC chairman will send official invitation to MARAFIQ to
send a representative to the meetings.
o Updated Manual:
The manual already updated and sent to the PQC members.
o Abstracts for 2012 P.Q workshop by KFUPM:
Date : Wednesday, 07-03-2012
Time : 09:30
Venue : Riyadh
12012dsadasdas 2012 Annual Report
4
Dr. Mohamed Kassas requested that the abstracts of the presentations
shall be sent before the coming workshop to KFUPM.
II. Presentation " SEC and National Grid SA preparation for next
summer "
o A brief presentation was presented by Mr. Hashim Al-Zahrani and Mr.
Abdullah Al-Shehri, National Grid SA, followed by group discussion.
III. 2012 Power Quality Workshop
o Dr. Mohamed Kassas distributed during the meeting program of the
workshop, followed by group discussion about the organizing and preparing
for the workshop.
o Dr. Mohamed Kassas mentioned that invitation to workshop has been sent to
all PQC members and he requested names of the participants to be sent to
KFUPM.
IV. S. Aramco & SABIC Disturbances List
o Mr. Abdulrahman Al-Shabnan and Saad Al-Aamri presented the disturbance
incidents that affected S. Aramco and SABIC during January and February
2012, followed by group discussion.
o S. Aramco and SABIC are requested to send their records of disturbance
incidents to National Grid SA periodically.
V. Next PQC Meeting Location
o The next meeting will be on May 30th
, 2012, at Eastern Province.
4.2 PQC Achievements – 2nd Meeting
Meeting Discussion Points
The meeting started at 09:30, PQC Chairman Mr. Laith Al-Bassam, National Grid SA, started
the meeting by welcoming all attendees and thanking them for attending the second Power
Quality Committee (PQC) meeting, 2012. Then, PQC members reviewed the meeting agenda
and the following were discussed:
I. Review Last Minutes of Meeting
Date : Wednesday, 30-05-2012
Time : 09:30 AM- 01:00 PM
Venue : Al-Khobar
12012dsadasdas 2012 Annual Report
5
The last minutes of Meeting were reviewed and action items were discussed as follow:
o Official invitation to SWCC & MARAFIQ to send representatives:
Mr. Laith Al-Bassam, PQC Chairman, already sent official invitation to
SWCC & MARAFIQ requesting them to send representatives to PQC
meetings and awaiting their response.
o S. Aramco records of disturbance incidents for the 1st Quarter 2012:
Mr. Mohammad Al-Shamrani will send the requested records to Mr.
Saad Al Aamri.
Mr. Saad Al-Aamri shall send reminder Email to Mr. Mohammad Al-
Shamrani whenever the records are needed.
Mr. Saad Al-Aamri shall compare National Grid SA records of
disturbance incidents with S. Aramco records.
o Sabic records of disturbance incidents for the 1st Quarter 2012:
Mr. Hussein Al-Abbad will send the requested records to Mr. Saad Al-
Aamri.
Mr. Saad Al-Aamri shall send reminder Email to Mr. Hussein Al-Abbad
whenever the records are needed.
Mr. Saad Al-Aamri shall compare National Grid SA records of
disturbance incidents with SABIC records.
II. Presentations
o “United Blackout April 2012”
A brief presentation was presented by Mr. Majdi Al-Faraj, SABIC,
followed by group discussion.
o "Disturbance Analysis Working Group: Efforts to improve PQ and System
Performance”
A brief presentation was presented by Mr. Saad Al-Amri, National Grid
SA, followed by group discussion.
o "S. Aramco & SABIC Disturbances List"
A brief presentation was presented by Mr. Saad Al-Amri, National Grid
SA, followed by group discussion.
Attendance recommended that S. Aramco & SABIC shall select some
disturbance incidents before a meeting and inform National Grid SA PQC
members. And then National Grid SA members will invite the concerned
departments for discussion within that PQC meeting accordingly.
The members recommended adding analysis & statistics to each
presentation of the disturbances list that affected S. Aramco & SABIC.
III. Other Issues
o Discussing the Last Power Quality Workshop:
12012dsadasdas 2012 Annual Report
6
Attendance thanks “KFUPM” for the good organization of the last PQ
workshop and the valuable participation from other members of PQC.
Moreover, the attendance discussed advantages and disadvantages of the
last PQ workshop.
The members agreed to continue in conducting annual PQ workshop and
promoted for ideas to enhance the PQ workshops in the coming years.
The attendance recommended inviting speakers to the coming PQ
workshops from non PQC members.
The attendance recommended inviting international experts from
overseas countries to provide training sessions one day before the day of
the PQ workshop and as speakers in the PQ workshop.
The group recommended that some higher studies students from the
universities shall be invited to present PQ relevant topics in the PQC
meetings and the PQ workshops.
PQC members shall suggest names of international experts as speakers in
the coming PQ workshop as well as to give training sessions one day
before the PQ workshop.
IV. Next PQC Meeting Location
o The members agreed on changing the date of the 3rd
PQC meeting to be 19
September 2012 at Eastern Province.
4.3 PQC Achievements – 3rd Meeting
Meeting Discussion Points
The meeting started at 09:30, Mr. Abdulrahman Al-Shabnan, National Grid SA, the meeting
chairman, started the meeting by welcoming all attendees and thanking them for attending the
Third Power Quality Committee (PQC) meeting, 2012. Then, PQC members reviewed the
meeting agenda and the following were discussed:
I. Review Last Minutes of Meeting
The last minutes of Meeting were reviewed and action items were discussed as follow:
o PQC members shall suggest names of international experts as speakers in the
coming 2013 PQ workshop as well as to give training sessions one day
before the PQ workshop:
Date : Wednesday, 19-09-2012
Time : 09:30 AM- 01:00 PM
Venue : Dhahran
12012dsadasdas 2012 Annual Report
7
PQC members agreed to conduct the coming annual PQ workshop and
training during 12 & 13, March 2013.
Dr. Mahmoud Kassas will contact the candidates’ speakers for the 2013
PQ Workshop.
Topics for all technical papers for 2013 PQ Workshop should be ready
by next meeting.
Invitations to entities that are non-Power Quality Committee members
shall be sent for participation in the coming 2013 PQ Workshop by
technical papers and attendance.
II. Presentations
o "Transformer Failure at Water Inject Facility"
A brief presentation was presented by Mr. Mohammed Al-Hamdan, S.
Aramco, followed by group discussion.
o "S. Aramco & SABIC Disturbances List"
A brief presentation was presented by Mr. Abdulrahman Al-Shabnan,
National Grid SA, followed by group discussion.
III. Site Visit
o "Power System Solar Test Field"
S. Aramco made a tour to “Power System Solar Test Field” where the
attendees get acquainted with state-of-art technologies in the solar power
systems.
IV. Next PQC Meeting Location
o The next meeting will be on December 26th
, 2012, at Makkah.
4.4 PQC Achievements – 4th Meeting
Meeting Discussion Points
The meeting started at 09:30, PQC Vice Chairman Mr. Hussain Al-Abbad, SABIC, the
meeting chairman, started the meeting by welcoming all attendees and thanking them for
attending the Fourth Power Quality Committee (PQC) meeting, 2012. Then, PQC members
reviewed the meeting agenda and the following were discussed:
Date : Wednesday, 26-12-2012
Time : 09:30 AM- 01:00 PM
Venue : Makkah
12012dsadasdas 2012 Annual Report
8
I. Review Last Minutes of Meeting
The last minutes of Meeting were reviewed and action items were discussed as follow:
o Dr. Mahmoud Kassas will contact candidates’ speakers for the 2013 PQ
Workshop:
Dr. Mahmoud Kassas contacted Mr. Alex McEachern, President of
Power Standards Lab, for speaking in the intended 2013 PQ workshop
and to provide two days training preceding the workshop. However, Dr.
Mahmoud Kassas informed the group that he is negotiating with Mr.
Alex McEachern for conducting three days training instead of two days.
Dr. Mahmoud Kassas send to PQC members the tentative outline of the
training course for review and he is awaiting reply.
The group decided that the PQ workshop will be conducted in KFUPM
premises during one day of 13 March 2013.
The group discussed the arrangement and organization of the training
course as well the 2013 PQ workshop.
The group decided that the training course is limited on entities that are
members of PQC and the training course shall be attended by senior
engineers in power quality discipline.
The attendance agreed on the commitment from each entity that is
member of PQC on the number of the persons who will register in the
training course. Marafiq, RCJY and ECRA shall be invited for
registration in the training course.
PQC members discussed the opening of an account at Saudi Scientific
Association for deposit and to fund the PQC activities.
o Topics for all technical papers for 2013 PQ Workshop should be ready this
meeting:
National Grid SA has submitted the topic of technical paper to Dr.
Mahmoud Kassas to be considered in the outline of 2013 PQ workshop.
KFUPM has already defined the topic of its technical paper to 2013 PQ
workshop.
Other members of PQC who are selected and agreed for participation in
the 2013 PQ workshop by technical papers, have been requested to
submit their topics to KFUPM.
o Invitations to entities that are non-Power Quality Committee members shall
be sent for participation in the coming 2013 PQ Workshop, by technical
papers and attendance:
Invitation to non PQC members shall be sent by KFUPM for
participation in the 2013 PQ workshop.
II. Presentations
o "Power Quality of Smart Grid"
12012dsadasdas 2012 Annual Report
9
A brief presentation was presented by Dr. Mohamed Smiai, KASCT,
followed by group discussion.
PQC members recommended for the adoption of the awareness about
the Smart Gird and the associated issues and problems of Power Quality.
o "S. Aramco & SABIC Disturbances list and 2012 statistics"
A brief presentation was presented by Mr. Saad Al-Amri, National Grid
SA, followed by group discussion.
o "Static Var Compensation need for SEC Grid"
A brief presentation was presented by Mr. Abdulrahman Al-Shareef,
SEC-Transmission, followed by group discussion.
III. Review of PQC Activities during 2012 and the Implementation Status of the Respective Recommendations.
o Mr. Hussain Al-Abbad, vice chairman of PQC, discussed with the group
brief on PQC activities during 2012, the implementation status of the 2011
recommendations and list of 2012 recommendations.
o Mr. Hashim Al-Zahrani, National Grid SA, will send invitation to PQC
members to attend CIGRE meeting during 30 December 2012.
o PQC will resend invitation to SWCC and Marafiq for sending representatives
to PQC meetings.
IV. Next PQC Meetings Location
The next meeting will be as following:
Meeting # Meeting Date Host Location
1 Feb 27, 2013 National Grid SA Riyadh
2 May 22, 2013 SABIC Eastern Province
3 Sep 18, 2013 Saudi Aramco Eastern Province
4 Dec 18, 2013 ECRA Riyadh
12012dsadasdas 2012 Annual Report
10
5. FOLLOW UP THE 2011 PQC RECOMMENDATIONS
One of the main PQC objectives is to follow recommendations that already assigned in the
previous PQC meetings by the committee members (PQC 2011 Recommendations).
Following are the 2011 PQC recommendations and their implementation status:
No. Recommendation Statement Action Taken
1 PQC shall undertake all efforts to conduct the PQ workshop each year. Done
2 The PQC members agreed on sending invitation to CIGRE's system
operation and control chairman to participate in one of the PQC
meetings.
Not
Implemented
3 Presentation on power quality related topics shall be done by the host of
each meeting. Done
4 Titles of the Power Quality studies conducted by the members of PQC
during the last five years should be presented. Done
5 Arranging for a presentation to PQC members by a power quality expert,
Mr. Johan Rens, about power quality related issues and experiences. Done
6 It is suggested that PQC shall submit a paper at 2011 Innovative Smart
Grid Technology (ISGT) conference. Not
Implemented
7 National Grid SA shall conduct a presentation on National Grid SA
preparation for summer during 2nd meeting of each year. Done
8 Proposing a plan to launch a national power quality monitoring system
across the kingdom. Done
9 PQC shall invite RCJY, SWCC and Marafiq to send representatives to
the PQC meetings. Done
10 Conducting presentations by PQC members at the universities for the
students to enhance PQ awareness. Done
11 PQC members shall discuss during the 4th meeting of each year the
contents and the formatting of the annual report. Done
12 The members agreed to change the group name to PQC "Power Quality
Committee", updating its manual and select a logo for the committee. Done
13 Saudi Aramco and SABIC should choose the most affected disturbance
incidents for presenting and discussion during the meetings. Done
14 PQC members agreed to have a quarterly disturbances report for
discussion during the meetings. Done
12012dsadasdas 2012 Annual Report
11
6. 2012 BULK CUSTOMERS DISTURBANCES
6.1 Disturbance Records – Trend Data
During the year of 2012, PQC reported (57) fault incidents that having major effects upon
the operation of Saudi Aramco & SABIC industrial bulk customers. The major effects
were recorded in Saudi Aramco where 87.72 % of the total disturbances introduce
significant effects on Saudi Aramco operating systems.
Figure (6.1) shows numbers of disturbance records reported by each of the two industrial
customers (Saudi Aramco and SABIC) while, for comparison, Figure (6.2) shows number
of disturbances that have been recorded within last three years.
Figure 6.1: 2012 Total Number of Disturbances Affected Saudi Aramco & SABIC
Figure 6.2: Number of Disturbances Affected Saudi Aramco & SABIC 2010-2012
S.ARAMCO
SABIC
42 41
50
15
8 7
0
10
20
30
40
50
60
2010 2011 2012
No
. of
Dis
urb
ance
s
ARAMCO SABIC
%Parties
to
Transmission
Incidents
Total
Transmission
Dist.
No. of
Dist. Affected
Customer
3.52 %
1422
50 ARAMCO
0.49 % 07 SABIC
57 Total
12012dsadasdas 2012 Annual Report
12
6.2 Disturbance Records – Causes
The potential of disturbances could be resulted from number of basic causes that may
include Weather Related Conditions, Equipment Failure, Human Errors, Mal-Operation,
System or/and Equipment Deficiency (weakness of the supplying system), and
Miscellaneous. Figures 6.3 and 6.4 show the distribution of disturbances causes and their
percentage parties that effected each of the industrial companies (Saudi Aramco and
SABIC). Figures 6.5 and 6.6 show the monthly distribution of disturbances causes that
effected Saudi Aramco and SABC respectively.
Results obtained from cause of disturbances representing figures indicate that, among the
different cause of interruption classes, the Weather Related class is the major cause which
has significant effects upon system operation of Saudi Aramco and Equipment Failure
class is the major cause upon system operation of SABIC. The obtained results showed
that 64.0% of the total Saudi Aramco disturbances are due to Weather Related and 71.0%
of the total SABIC disturbances are due to Equipment Failure. The highest number of
incidents that effected Saudi Aramco occurred during April.
On the other hand, the Equipment Failure class is the second major cause in Saudi
Aramco while the Human Error class has the second effects upon system operation of
SABIC. The obtained results showed that 24% of the total Saudi Aramco disturbances are
due to Equipment Failure and 29% of the total SABIC disturbances are due to Human
Error.
Also, human error as a third cause of disturbance upon Saudi Aramco where it records 8%
of the total Saudi Aramco disturbances.
Figure 6.3: 2012 Causes of Disturbances affected Saudi Aramco
24%
8% 2% 2%
0%
64%
Equipment Failure Human Error Miscellaneous
Mal Operation System Deficiency Weather Related
12012dsadasdas 2012 Annual Report
13
Figure 6.4: 2012 Causes of Disturbance affected SABIC
Figure 6.5: 2012 Monthly trend of Disturbances and their Causes –Saudi Aramco
71%
29%
0% 0% 0% 0%
Equipment Failure Human Error Miscellaneous
Mal Operation System Deficiency Weather Related
0
2
4
6
8
10
12
14
16
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
EF HE Mis MO SD WR 2012 Total
12012dsadasdas 2012 Annual Report
14
Figure 6.6: 2012 Monthly trend of Disturbances and their Causes –SABIC
6.3 Disturbance Records – Voltage Levels
The reliability / Availability of the supplying system provided by National Grid SA should
also be taken in considerations when evaluating National Grid SA – Customers nature of
disturbances. Means of supplying systems provided by National Grid SA to the major bulk
customers (Saudi Aramco and SABIC) include different kV transmission levels (380, 230,
132, and 115 kV levels).
Table 6.1 shows the 2012 records of disturbances and the related voltage levels. As it can
be seen from the table, the majority of the fault incidents that affect the operation system
in Saudi Aramco are due to disturbances within the 115 kV supplying transmission
systems (90% of the interruptions are due to 115 kV faults). On the other hand, most of
the SABIC disturbances are due to faults within the 230 kV transmission systems (71 %
of the interruptions are due to 230 kV faults). See the below table 6.1 and figures (6.7 and
6.8). Table 6.1: 2012 Disturbance Records – Related Voltage Levels
Bulk
Customers
Supplying kV
Levels
Number of
Interruptions Total Interruptions
Saudi Aramco
380kV 01 (02.0%)
50 230 kV 03 (06.0%)
132 kV 01 (02.0%)
115 kV 45 (90.0%)
SABIC 380 kV 02 (29.0%)
07 230 kV 05 (71.0%)
0
0.5
1
1.5
2
2.5
3
3.5
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
EF HE Mis MO SD WR 2012 Total
12012dsadasdas 2012 Annual Report
15
Figure 6.7: 2012 Percentage Parties of Voltage Levels Interruptions Affected Saudi Aramco
Figure 6.8: 2012 Percentage Parties of Voltage Levels Interruptions Affected SABIC
6.4 Disturbance Records – Locations
Defining locations that disturbances were originate is another aspect to be taken in
consideration when analyzing disturbance records. This may help in building predictive or
defense actions such as increasing maintenance processes and inspection tests at the
interrupted locations that may result in decreasing the possibility of disturbances re-
occurrences.
2% 6%
2%
90%
380 kV Transmission Interruptions
230 kV Transmission Interruptions
132 kV Transmission Interruptions
115 kV Transmission Interruptions
29%
71%
380kV Transmission Interruptions
230kV Transmission Interruptions
12012dsadasdas 2012 Annual Report
16
Among the different disturbance locations, the highest interruption frequency of
occurrence that effect Saudi Aramco was reported by EOA-South S/Ss (Shedgum, Ain
Dar, Uthmaniyah, Hawiyah and Khurais) where 68% of the total effected disturbances
were originated from these EOA- South Area S/Ss. Moreover, significant 32% of the
total effected disturbances were originated from these EOA- North Area S/Ss (Safaniyah,
Khursaniyah, Berri, Juaymah, Qatif, Ras Tanura and Abu Ali). On the other hand, Berri
Area S/Ss are the main severe disturbance locations affected SABIC where 43 % of the
total disturbances were originated from Berri Area S/Ss.
Tables (6.2 and 6.3) show lists of disturbances locations that affect Saudi Aramco as well
as SABIC facilities while figures 6.9 and 6.10 indicate for the distribution of the
percentage parties.
Disturbance
Location
No. of
Disturbances
Ghazlan 2
Riyadh 1
Jubail 1
Berri 3
Total 7
Disturbance
Location
No. of
Disturbances
Safaniyah 3
Khursaniyah 7
Berri 2
Juaymah 1
Abu Ali 1
Shedgum 5
Ain Dar 9
Uthmaniyah 13
Hawiyah 6
Khurais 1
Ras Tanura 1
Qatif 1
Total 50
Table 6.3: 2012 Disturbance Locations
Affected SABIC
Table 6.2: 2012 Disturbance Locations
Affected Saudi Aramco
12012dsadasdas 2012 Annual Report
17
Figure 6.9: 2012 Percentage Parties of Disturbance Locations – Saudi Aramco
Figure 6.10: 2012 Percentage Parties of Disturbance Locations – SABIC
0%
5%
10%
15%
20%
25%
30%%
Of
Dis
turb
an
ce
Re
co
rds
Disturbance Locations EOA - North Area
EOA - South Area
0%
5%
10%
15%
20%
25%
30%
35%
40%
45%
Ghazlan Riyadh Jubail Berri
% O
f D
sit
urb
an
ce
Rec
ord
s
Disturbance Locations
12012dsadasdas 2012 Annual Report
18
6.5 Disturbance Records – Impacts from Non-Transmission Parties.
Not all incidents are attributable to transmission. External Parties (Non Transmission) can
also cause disruption to the Transmission network. External Parties that may significantly
affect Transmission system performance include Generation, Distribution, IWPP/IPP,
Bulk Customers, and Contractors.
Review of the Transmission incidents that affected Saudi Aramco and SABIC during
2012 showed that 11 out of the 57 disturbance incidents, (or 19.30 %), were initiated by
Non-Transmission as represented in Table 6.4.
Distribution Generation
IWPP
/IPP
Bulk
Customer Contractor Public Total
Parties
%
ARAMCO 0 0 0 4 2 1 7 12.28%
SABIC 0 2 1 0 1 0 4 07.02%
Total 0 2 1 4 3 1 11 19.30%
During 2012, the major external party that affected the performance of Saudi Aramco is
Bulk Customers (36.36% out of external parties). However, the remaining 63.64.% of
external parties disturbance records are caused by Generation, IWPP/IPP, Contractor and
Public. Around 75% of the external parties that effected SABIC are caused by Generation,
IWPP/IPP.
Figure 6.11: Distribution % of External Parties Affected Saudi Aramco & SABIC
3.51%
1.75%
1.75%
7.02%
3.51%
1.75%
0.00%
1.00%
2.00%
3.00%
4.00%
5.00%
6.00%
7.00%
8.00%
Distribution Generation IWPP/IPP Bulk Customer Contractor Public
Saudi Aramco Sabic
Table 6.4: External Parties Affected Saudi Aramco & SABIC – 2012
12012dsadasdas 2012 Annual Report
19
6.6 Key Performance Indicators – KPIs
The Key Performance indices (KPIs) are universally used to evaluate the performance of a
power system and its component units. They are the basic management tools serving to
identify potential system weaknesses and improvement needs.
The performance indices empower the concerned organizations for active participation in
the planning process and undertaking timely corrective measures for necessary
rectifications and system improvement actions, eventually leading to accomplishing a
better customer service target.
Customer Average Interruption Duration Index (CAIDI) and Voltage Dip (V.D), KPIs are
considered and analyzed for Saudi Aramco and SABIC for the year 2012.
6.6.1 Customer Average Interruption Duration Index
The Customer Average Interruption Duration Index (CAIDI) is a reliability index used
by electric power utilities. It is related to the duration of the interruptions when the
supply is off and the number of the experienced interruption incidents. CAIDI is
measured in minutes according to the following formula.
𝑪𝑨𝑰𝑫𝑰 =𝑺𝒖𝒎 𝒐𝒇 𝒂𝒍𝒍 𝒊𝒏𝒕𝒆𝒓𝒓𝒖𝒑𝒕𝒊𝒐𝒏 𝒅𝒖𝒓𝒂𝒕𝒊𝒐𝒏𝒔
𝑻𝒐𝒕𝒂𝒍 𝒏𝒖𝒎𝒃𝒆𝒓 𝒐𝒇 𝒊𝒏𝒕𝒆𝒓𝒓𝒖𝒑𝒕𝒊𝒐𝒏 𝒊𝒏𝒄𝒊𝒅𝒆𝒏𝒕𝒔
Customer Average Interruption Duration Index for the Saudi Aramco and SABIC is
presented in figure 6.13 for 2010-12.
Figure 6.13: 2012 Percentage of CAIDI for S. Aramco & SABIC
113.24
100.44
62.26
7.13 15.13
31.14
0
20
40
60
80
100
120
2010 2011 2012
S. Aramco SABIC
12012dsadasdas 2012 Annual Report
20
6.6.2 Voltage Dip - V.D
Voltage dip is reduction in voltage, 10% to 99% of nominal, typical lasting from cycles
to seconds. Voltage dips are caused by abrupt increase in loads such as faults, motor
starting, the furnaces turning on, or they are caused by abrupt increase in source
impedance caused by interruption elements.
Number of voltage dips that effected Saudi Aramco and SABIC are shown in figure 6.14,
2010-2012.
Figure 6.14: 2012 Voltage Dip interruptions for S. Aramco and SABIC
1
4
2 2
1
4
0
1
2
3
4
5
2010 2011 2012
Saudi Aramco SABIC
12012dsadasdas 2012 Annual Report
21
7. CONCLUSIONS
During the 2012 four meetings have been assigned by the PQC, the following conclusions
have been drawn:
Official invitations to SWCC & MARAFIQ are sent to send representatives to
PQC meeting.
Valuable information, technical data, and unified procedures related to PQ issues
have been exchanged between all PQC members.
PQC members discussed during the 4th
meeting of each year the contents and the
formatting of the annual report.
Saudi Aramco and SABIC selected the most affected disturbance incidents for
presenting and discussion during the meetings.
A quarterly disturbances report was done periodically for discussion by PQC
members during the meetings.
The group set the year agenda during the last meeting each year.
During 2012, PQC conducted 2012 PQ workshop and has prepared for 2013 PQ
workshop.
PQ related experiences have been demonstrated throughout successful
presentations as following:
a- "National Grid SA and SEC preparation for next summer", by National
Grid SA.
b- "United Blackout April - 2012", by SABIC.
c- "Disturbance Analysis Working Group: Effort to Improve PQ and
System Performance" by National Grid SA
d- "S. Aramco & SABIC Disturbances List", by National Grid SA.
e- "Transformer Failure At Water Inject Facility”, by S. Aramco.
f- “Power Quality of Smart Grid”, by KASCT.
g- "S. Aramco & SABIC Disturbance List and 2012 Statistics", by National
Grid SA.
Recommendations that already assigned in the last PQC report (2011 – PQC
report) have been followed by the PQC. The most significant actions taken are:
a. Presentation on power quality related topics shall be done by the host of
each meeting.
b. Arranging for a presentation to PQC members by a power quality expert,
Mr. Johan Rens, about power quality related issues and experiences.
c. Conducting presentations by PQC members at the universities for the
students to enhance PQ awareness.
d. The members agreed to change the group name to PQC "Power Quality
Committee", updating its manual and select a logo for the committee.
12012dsadasdas 2012 Annual Report
22
Records of the 2012 bulk customers' disturbances have been discussed and
analyzed by the PQC. The analysis of the records reveal that:
a- PQC reported (57) fault incidents that having major effects upon the
operation of Saudi Aramco & SABIC industrial bulk customers. The
major effects were recorded in Saudi Aramco where (87.72%) of the total
disturbances introduce significant effects on Saudi Aramco operating
systems.
b- Weather Related class is the main cause of Saudi Aramco Disturbances
(64.0%) while Equipment failure class was the main cause of SABIC
related disturbances (71.4%).
c- Majority of the fault incidents that affect the operation process in Saudi
Aramco are due to disturbances within the 115 kV supplying
transmission systems, 90% of the total disturbances. While 71.4% of the
disturbances that affect SABIC are due to faults with the 230kV
supplying transmission system.
8. 2012 PQC RECOMMENDATIONS
Following are the 2012 PQC recommendations:
1. PQC shall undertake all efforts to conduct the PQ workshop each year.
2. Sending invitations to SWCC and MARAFIQ for sending representatives to PQC
meetings.
3. Presentation on power quality related topics shall be done by the host of each
meeting.
4. Presenting a quarterly presentation during the meetings about the disturbances that
affected S. Armco and SABIC.
5. S. Aramco & SABIC shall select some disturbance incidents before a meeting and
inform National Grid SA PQC members. And then National Grid SA members will
invite the concerned departments for discussion within that PQC meeting
accordingly.
6. Add analysis & statistics to each presentation of the disturbances list that affected
S. Aramco & SABIC.
7. Inviting speakers to the coming PQ workshops from non PQC members.
8. Inviting international experts from overseas countries to provide training sessions
before the day of the PQ workshop and as speakers in the PQ workshop.
9. Higher studies students from the universities shall be invited to present PQ
relevant topics in the PQC meetings and the PQ workshops.
10. Sending invitations to entities that are non-Power Quality Committee members for
participation in the coming 2013 PQ Workshop by technical papers and
attendance.
11. PQC members shall discuss during the 4th
meeting of each year the contents and
the formatting of the annual report.
12012dsadasdas 2012 Annual Report
23
9. 2013 PQC PLAN
Promote ideas of P.Q.
Maintain and activate the link between industry and Academia.
Follow up the 2012 PQC recommendations.
Prepare for the 2013 PQC annual report of achievement and shortcoming.
Conducting PQ Workshop on 2013.
Continue exchanging Power Quality data and information between PQC members.
Following represent the 2013 PQC scheduled meeting:
Meeting No. Date Host Location
1 Feb 27, 2013 National Grid SA Riyadh
2 May 22, 2013 SABIC Eastern Province
3 Sep 18, 2013 Saudi Aramco Eastern Province
4 Dec 18, 2013 ECRA Riyadh
12012dsadasdas 2012 Annual Report
25
PQC Members
Name Affiliate
Laith A. Al-Bassam National Grid SA
(Chairman)
Hussain Al-Abbad SABIC
(Vice Chairman)
Saad Al-Aamri National Grid SA
(Secretary)
Abdulrahman Al-Shabnan National Grid SA
(Main Member)
Abdulaziz Alzahrni SABIC
(Main member)
Abdullah Alshehri National Grid SA
(Main Member)
Ali Al-Qahtani Saudi Aramco
(Main member)
Fayez Al-Jabri ECRA
(Main member)
Hamed Al-Saggaf SEC
(Main member)
Hashim Al-Zahrani Saudi Aramco
(Main member)
Hussain hanbazazah Saudi Aramco
(Main member)
Khaled Al-Ghamdi SEC
(Main member)
Dr. Abdullah Al-Abbas SEC
(Main member)
Dr. Ayman Al-abduljabbar KACST
(Main member)
Dr. Mohamed Salah Smiai KACST
(Main member)
Dr. Mahmoud Kassas KFUPM
(Main member)
Dr. Othman Al-Natheer KACST
(Main member)
Mazen Al-Qurtas SEC
(Main member)
Mohammad Al-Shamrani Saudi Aramco
(Main member)
Sameer Sonbol National Grid SA
(Main Member)