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12012dsadasdas 2013 Annual Report
CONTENTS 1. INTRODUCTION 1
2. MISSIONS AND OBJECTIVES 1
3. PQC MEMBERS 2
4. 2013 PQC ACHIEVEMENTS 3
4.1 PQC Achievements – 1st Meeting …………………….………………………. 3
4.2 PQC Achievements – 2nd Meeting ………………….…………….………….. 5
4.3 PQC Achievements – 3rd Meeting ………………….…………………………. 7
4.4 PQC Achievements – 4th Meeting ………………….…………………………. 9
5. FOLLOW UP THE 2012 PQC RECOMMENDATIONS 12
6. 2013 BULK CUSTOMERS DISTURBANCES 13
6.1 Disturbance Records – Trend Data …………………….……………………….. 13
6.2 Disturbance Records – Causes ………………….…………….………………….. 14
6.3 Disturbance Records – Voltage Levels…………….……………………………. 16
6.4 Disturbance Records – Locations ………………….…………………………….. 17
6.5 Key Performance Indicators – KPIs………………….…………………………… 20
6.5.1 Customer Average Interruption Duration Index………………….………. 20
6.5.2 Voltage Dip ……………………….…………………………………………………… 21
7. CONCLUSIONS 22
8. 2013 PQC RECOMMENDATIONS 23
9. 2014 PQC PLAN 24
Appendix (A) 25
12012dsadasdas 2013 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 2013. 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 2013 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. King Abdullah City for Atomic and Renewable Energy (K.A.CARE)
Detail contact information, name, affiliation, contact phone and e-mail of all the PQC
members are listed in appendix (A)
12012dsadasdas 2013 Annual Report
3
4. 2013 PQC ACHIEVEMENTS
PQC has been verifying certain achievements throughout definite schedule meeting during the
year of 2013. Dates, hosts, locations, and PQC discussion points of the assigned meetings are
explained in the following sub-sections.
2013 MEETING SCHEDULE
Meeting # Meeting Date Host Location
1 Feb 27, 2013 National Grid SA Riyadh
2 May 22, 2013 SABIC Eastern Province
3 Sep 19, 2013 Saudi Aramco Eastern Province
4 Dec 19, 2013 ECRA Riyadh
4.1 PQC Achievements – 1st Meeting
Meeting Discussion Points
The meeting started at 09:30, Mr. Abdulrahman Al-Shabnan, started the meeting by
welcoming all attendees and thanking them for attending the First Power Quality Committee
(PQC) meeting, 2013. 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 review the tentative outline of the PQ Training Course:
Already done by the PQC members before the meeting. Opinions and
comments have been sent to Dr. Mahmoud Kassas to be considered in the
revising of the outline of the PQ Training course.
o Topics for all technical papers for 2013 PQ Workshop should be sent to Dr.
Mahmoud Kassas:
All participants have sent the topics they are going to present in thee
intended PQ workshop.
o Registration in the PQ training course according to the commitment from
each party of PQC:
Dr. Mahmoud Kassas confirmed the completion of the registration from
most of the entities of PQC as per their commitment. The remaining ones
Date : Wednesday, 27-02-2013
Time : 09:30 AM - 01:00 PM
Venue : Riyadh
12012dsadasdas 2013 Annual Report
4
have been requested to expedite the registration process in the PQ
training course.
o Invitations and Outline of the 2013 PQ Workshop:
Dr. Mahmoud Kasass already sent thee invitations along with the outline
of the PQ workshop to PQC members.
o Invitation to non PQC members shall be sent by KFUPM for participation in
the 2013 PQ workshop:
Dr. Mahmoud Kasass already sent thee invitations along with the outline
of the PQ workshop to Marafiq and SWCC.
o Registration in the 2013 PQ Workshop:
The registration in the PQ workshop is going on and all entities shall
complete thee registration process by 03 March 2013.
o Resend invitation to SWCC for sending representatives to PQC meetings:
Mr. Abdulrahman Al-Shabnan will resend the invitation to SWCC after
getting the contact person information.
o Resend invitation to Marafiq for sending representatives to PQC meetings:
Mr. Hussein Al-Abbad already sent again the invitation to Marafiq.
II. Presentations.
o " SEC and National Grid SA preparation for next summer "
A brief presentation was presented by Mr. Abdullah Al-Shehri, National
Grid SA, 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. 2013 Power Quality Workshop
o The attendance discussed the preparations by the organizing committee and
agreed on the overall program off the PQ workshop.
IV. Next PQC Meeting Location
o The next meeting will be on 22th
May 2013, at Eastern Province.
12012dsadasdas 2013 Annual Report
5
4.2 PQC Achievements – 2nd Meeting
Meeting Discussion Points
The meeting started at 09:30, Mr. Hussein Al-Abbad, PQC Vice Chairman - SABIC, started
the meeting by welcoming all attendees and thanking them for attending the Second Power
Quality Committee (PQC) meeting, 2013. 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 Re-send invitation to SWCC for sending representatives to PQC meetings:
Mr. Abdulrahman Al-Shabnan confirmed that the invitation to SWCC to
join the PQC has been re-sent by the PQC chairman.
II. Last Power Quality Workshop & Training Evaluation and Improvement Ideas
o The committee members expressed deep thanks to Dr. Mahmoud Kassas on
the excellent works of the organization and the arrangement and the exerted
efforts that led to successful workshop and training.
o Dr. Mahmoud Kassas presented the evaluation of the conducted PQ training
course and PQ workshop based on the feedback by the participants on the
collected questionnaires.
o The attendance discussed the improvement needs and ideas.
o The members emphasized to keep up the same level of excellence or go
beyond when the future events of training and workshop are planned.
o The group agreed to conduct one PQ training course yearly and it shall
contains basic as well as advanced parts relevant to the Power Quality
discipline.
o PQC members will decide in the 3rd
meeting the date and venue for the 2014
PQ training course. Proposals and ideas about 2014 PQ training course shall
be collected by Saad Al-Aamri from the members. Dr. Mahmoud Kassas will
present in the 3rd
meeting the study of such proposals and ideas.
o The members agreed for one theme in the yearly PQ workshop and the PQ
workshop shall be one day.
o The members recommend that two committees shall be constituted in the 3rd
meeting and to be effective as following: 1) Organizing committee to do all
Date : Wednesday, 22-05-2013
Time : 09:30 AM - 01:00 PM
Venue : Al-Khobar
12012dsadasdas 2013 Annual Report
6
necessary organize, arrangement and coordination of the workshop activities.
2) Technical committee to review early the technical papers and the topics in
the workshop and elevate their level.
o The attendance recommended that the manufacturers and vendors shall be
invited to attend and participate in workshop.
III. Presentations
o “Voltage Dips Impact and Mitigation to Petrochemical Industries-Case
study”
A brief presentation was presented by Mr. Majdi Al-Faraj, SABIC,
followed by group discussion.
o " S. Aramco & SABIC Disturbances List”
A brief presentation was presented by Mr. Saad Al-Aamri, National Grid
SA, followed by group discussion.
IV. Power Quality Incidents Record and Discussion
o The group recommended that the PQC members should share experience and
present in each meeting case study or records of PQ incidents.
V. Other Issues
o Review of PQC Charter.
The members decided to review the PQC charter and make assessment
and gap analysis in the 4th meeting.
Points for discussion and proposals and ideas shall be sent to the PQC
secretary before the 4th meeting.
The attendance recommended to invite K.A.CARE (King Abdullah City
for Atomic and Renewable Energy) to join the PQC and participate in the
meetings and the PQC activities.
VI. Next PQC Meeting Location
o The members agreed on changing the date of the 3rd
PQC meeting to be 19th
September 2013, at Eastern Province.
12012dsadasdas 2013 Annual Report
7
4.3 PQC Achievements – 3rd Meeting
Meeting Discussion Points
The meeting started at 09:30, Mr. Hussein Al-Abbad, PQC Vice Chairman - SABIC, started
the meeting by welcoming all attendees and thanking them for attending the Third Power
Quality Committee (PQC) meeting, 2013. 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 Send invitation to KA-CARE for sending representatives to PQC meetings:
Invitation to KA-CARE has been sent by the VP of Planning, National
Grid SA, and awaiting the reply to join PQC.
o Proposals and ideas by the members about 2014 PQ training course:
Mr. Saad Al-Aamri compiled the proposals and ideas by the PQC
members about 2014 PQ training course and forwarded them to Dr.
Mahmoud Kassas for study.
o Present the study of the proposals and ideas about 2014 PQ training course:
Dr. Mahmoud Kassas studied the received proposals and ideas and
briefed the attendees with the study result.
o Decide the date and venue of 2014 PQ training course and workshop:
The group discussed in this meeting the appropriate date and place to
conduct 2014 PQ training courses and workshop.
o Constitute the organizing committee and the technical committee for 2014
PQ workshop:
The attendance agreed in the meeting to assign one committee,
designated to undertake the overall organizing and technical preparation
for conducting 2014 PQ training courses and workshop.
o Distribute existing PQC charter and list up points for discussion and
proposals and ideas for the 4th meeting:
Mr. Saad Al-Aamri already sent the PQC charter to the members.
Mr. Saad Al-Aamri shall prepare main points, extracted from the charter,
and send them to the PQC members to get respective opinions and ideas
for discussion in the next meeting.
Date : Thursday, 19-09-2013
Time : 09:30 AM - 01:00 PM
Venue : Khobar
12012dsadasdas 2013 Annual Report
8
II. Discuss the Organization and the Preparation for 2014 PQ Training Course and 2014 Annual Workshop
o The members agreed on the theme of intended 2014 Power Quality
Workshop to be: “Impact of Integrating Renewable Energy Sources on the
Power Quality”.
o PQC agreed to conduct two PQ training courses, Basics & Advanced, instead
of one course during 2014.
o Attendance agreed preliminary on the targeted date for PQ Workshop and
Advanced PQ Training Course to be in the week 16-20, March 2014.
o Dr. Mahmoud Kassas contacted with some experts and specialists to
introduce PQ training course and to be as speaker in the PQ workshop.
o During the meeting, the attendance discussed some suggested names of
international experts in PQ. However, the members may suggest names of
international experts or specialists in PQ and to be sent to Dr. Mahmoud
Kassas soon.
o The attendance agreed in the meeting to assign one committee, designated to
undertake the overall organizing and technical preparation for conducting
2014 PQ training courses and PQ workshop. Names of the committee
members as following:
Dr. Mahmoud Kassas (Leader).
Dr. Aymen Al-Abduljabbar.
Mr. Abdulaziz Al-Zahrani.
Mr. Hashim Al-Zahrani.
Mr. Saad Al-Aamri.
III. Presentations
o “Islanding Scheme Enhancement: Technology and Methodology “
A brief presentation was presented by Mr. Miguel Aguiar, Saudi Aramco,
followed by group discussion.
o " Power Quality Incidents Record and Discussion"
A brief presentation about the incident records of “Dammam Area Partial
Blackout during 26 June 2013” was presented by Mr. Abdullah Al-
Shehri, National Grid SA, followed by group discussion
o "S. Aramco & SABIC Disturbances List"
A brief presentation was presented Mr. Saad Al-Aamri, National Grid
SA, followed by group discussion
IV. Next PQC Meeting Location
o The next meeting will be on 19th
December 2013, at Makkah.
o ECRA and KACST shall decide the host for the next meeting and the
meeting venue
12012dsadasdas 2013 Annual Report
9
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, 2013. 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 Suggest names of international experts as speakers in coming 2014 PQ
workshop as well as to introduce advanced PQ training course:
Dr. Aymen Al-Abduljabbar and Dr. Mahmoud Kassas are searching and
talked with a group of experts in the Power Quality discipline to
participate in 2014 PQ workshop as well as to deliver advanced training
course before that.
Dr. Aymen Al-Abduljabbar and Dr. Mahmoud Kassas informed the
group about the negotiations with South African and Belgium Power
Quality engineers who are experts in the field of PQ standardizations &
regulation and impact of renewable energy resources on PQ.
Mr. Bander Mutwali, KACARE, informed the group that they can
capitalize on KACARE’s ongoing project “studying the impact of
introducing Sustainable Energy to the Saudi Grid” to serve the need
regarding the PQ training course and workshop. Hosting and sponsoring
the event, is based on management approval.
Mr. Bander Mutwali shall coordinate with Dr. Aymen Al-Abduljabbar
and Dr. Mahmoud Kassas to meet KACARE’s consultant or discuss the
requirements of PQC for 2014 PQ workshop and training course.
Dr. Aymen Al-Abduljabbar and Dr. Mahmoud Kassas shall select PQ
experts or candidates’ speakers who meet PQC requirements to
participate in 2014 PQ workshop and deliver advanced training course
before that.
o Prepare draft for the structure and the outline of 2014 PQ Training Courses
and 2014 PQ Workshop, and distribute among the PQC members for
review:
Dr. Mahmoud Kassas distributed among the attendance the outline of
2014 PQ workshop proposed for discussion during the meeting.
Date : Thursday, 19-12-2013
Time : 09:30 AM - 01:00 PM
Venue : Makkah
12012dsadasdas 2013 Annual Report
10
The group agreed that to put NO specific theme for 2014 PQ workshop
however Impact of Integrating Renewable Energy Sources on the Power
Quality and Solutions shall be the main topic in the intended workshop.
PQC agreed that, the date of 2014 PQ workshop is 20 March 2014 and
timing is 08:00 – 13:00. The training course will be conducted for three
days from 17-19, March 2014.
KACARE shall present during 2014 PQ workshop Introduction about
KACARE.
PQC recommended that topic about European/USA experience and
practices about the integration of renewable energy resources and their
impact on PQ & the solutions to be presented in 2014 PQ workshop by
the selected speakers.
PQC recommended that the Distribution Code Review Panel shall
introduce short presentation in 2014 PQ workshop about the Power
Quality standards and regulation contained in the Distribution Code.
All Members of PQC shall propose and provide topics related to Power
Quality for presenting in 2014 PQ Workshop and the topics should be
according to the functions of their Organization.
The organizing committee designated for 2014 PQ workshop will decide
and chose the appropriate topics for 2014 PQ workshop after receiving
all proposed topics from PQC members.
Based on the topics that will be selected, the presentation shall be
prepared and submitted to the organizing committee timely by the main
members of PQC and the Quality Assurance of the presentation content
and result will be their responsibility.
PQC recommended that SEC and National Grid SA shall present in 2014
PQ workshop about Benefits on PQ that will be realized from changing
the voltage from 220/127 Volts to 230/400 Volts.
o Prepare main points, extracted from the PQC charter, and send them to the
PQC members to get respective opinions and ideas for discussion in the
next meeting:
Mr. Saad Al-Aamri has prepared before the meeting the requested main
points that depicting the PQC charter and sent to the members for
review and perusal.
II. Discuss the revising of PQC Charter/Manual
o Discuss the revising of the PQC charter postponed to next year, 2014, ahead
the 2nd meeting by one day, fully dedicated to revise the PQC charter.
III. Presentations
o "Power Quality of Smart Grid for Power Distribution Network "
A brief presentation was presented by Dr. Mohamed Smiai, KASCT,
followed by group discussion.
12012dsadasdas 2013 Annual Report
11
o " Network Reliability Improvement Plan"
A brief presentation was presented by Mr. Shareef Al-Barrak, ECRA,
followed by group discussion.
IV. Other Issues.
o The attendance agreed on the commitment from each entity that is member
of PQC on the number of the engineers who will register in 2014 PQ training
course. The targeted number of participants is 20 - 25.
V. Next PQC Meetings Location
o The program of PQC meetings during 2014 shall be prepared by Mr. Saad
Al-Aamri as agreed during the meeting and be sent to PQC members.
o The next meeting will be as following:
Meeting # Meeting Date Host Location
1 Mar 06, 2014 National Grid SA Riyadh
2 May 14, 2014 SABIC Eastern Province
3 May 15, 2014 SABIC Eastern Province
4 Sep 18, 2014 Saudi Aramco Eastern Province
5 Nov 27, 2014 To be Identified in
the 3rd
meeting Makkah
12012dsadasdas 2013 Annual Report
12
5. FOLLOW UP THE 2012 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 2012 Recommendations).
Following are the 2012 PQC recommendations and their implementation status:
No. Recommendation Statement Action Taken
1 PQC shall undertake all efforts to conduct the PQ Training Course and
Workshop each year. Done
2 Sending invitations to SWCC and MARAFIQ for sending
representatives to PQC meetings. Done
3 Presentation on power quality related topics shall be done by the host
of each meeting. Done
4 Presenting a quarterly presentation during the meetings about the
disturbances that affected S. Armco and SABIC. Done
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. Done
7 Inviting speakers to the coming PQ workshops from non PQC
members. Done
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. Done
9
Higher studies students from the universities shall be invited to
present PQ relevant topics in the PQC meetings and the PQ
workshops. Done
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. Done
11 PQC members shall discuss during the 4
th meeting of each year the
contents and the formatting of the annual report. Done
12012dsadasdas 2013 Annual Report
13
6. 2013 BULK CUSTOMERS DISTURBANCES
6.1 Disturbance Records – Trend Data
During the year of 2013, PQC reported (51) 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 98.0 % 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: 2013 Total Number of Disturbances Affected Saudi Aramco & SABIC
Figure 6.2: Number of Disturbances Affected Saudi Aramco & SABIC 2010-2013
S.ARAMCO
SABIC
42 41
50 50
15
8 7
2
0
10
20
30
40
50
60
2010 2011 2012 2013
No
. of
Dis
urb
ance
s
ARAMCO SABIC
%Parties
to
Transmission
Incidents
Total
Transmission
Dist.
No. of
Dist. Affected
Customer
3.00 %
1636
50 ARAMCO
0.12 % 02 SABIC
52 Total
12012dsadasdas 2013 Annual Report
14
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 84.0% of the total Saudi Aramco disturbances are due to Weather Related where
SABIC related disturbances were just two interruptions, the first caused by Equipment
failure class and the other one by Public and Other impacts. 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. The obtained results showed that 6.0% of the total Saudi Aramco disturbances
are due to Equipment Failure.
Also, Miscellaneous as a third cause of disturbance upon Saudi Aramco where it records
8% of the total Saudi Aramco disturbances.
Figure 6.3: 2013 Causes of Disturbances affected Saudi Aramco
6%
0%
4%
0%
0% 2%
2% 2%
84%
Equipment Failure Human Error
Miscellaneous Mal Operation
System Deficiency Protection Problem Related
Bulk Customer Impact Public & Others Impact
Weather Related
12012dsadasdas 2013 Annual Report
15
Figure 6.4: 2013 Causes of Disturbance affected SABIC
Figure 6.5: 2013 Monthly trend of Disturbances and their Causes –Saudi Aramco
50%
0%
0% 0% 0% 0%
50%
0% 0%
Equipment Failure Human Error(National Grid) SAMiscellaneous Mal OperationProtection Problem Related Bulk Customer ImpactPublic & Others Impact System DeficiencyWeather Related
0
2
4
6
8
10
12
14
16
18
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
EF HE Mis MO SD BCI PPR POI WR 2013 Total
12012dsadasdas 2013 Annual Report
16
Figure 6.6: 2013 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 2013 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 (96% of the interruptions are due to 115 kV faults). On the other hand, all of the
SABIC disturbances are due to faults within the 230 kV transmission systems (100 % 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: 2013 Disturbance Records – Related Voltage Levels
Bulk Customers Supplying
kV Levels
Number of
Interruptions Total Interruptions
SAUDI ARAMCO
230 kV 02 (4.0%) 50
115 kV 48 (96.0%)
SABIC 230 kV 2 (100.0%) 02
0
0.2
0.4
0.6
0.8
1
1.2
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
EF HE Mis MO SD WR 2013 Total
12012dsadasdas 2013 Annual Report
17
Figure 6.7: 2013 Percentage Parties of Voltage Levels Interruptions Affected Saudi Aramco
Figure 6.8: 2013 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.
0% 4%
0%
96%
380 kV Transmission Interruptions 230 kV Transmission Interruptions
132 kV Transmission Interruptions 115 kV Transmission Interruptions
0%
100%
0% 0%
380kV Transmission Interruptions 230kV Transmission Interruptions
132kV Transmission Interruptions 115kV Transmission Interruptions
12012dsadasdas 2013 Annual Report
18
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 Mahasen) where 76% of the total effected disturbances
were originated from these EOA- South Area S/Ss. Moreover, significant 24% of the
total effected disturbances were originated from these EOA- North Area S/Ss (Safaniyah,
Khursaniyah, Berri, Juaymah, Qatif, Ghunan and Abu Ali). On the other hand, Jubail
Area S/Ss, and Ghunan S/Ss are the main severe disturbance locations affected SABIC
where 50 % of the total disturbances were originated from each.
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.
Disturbanc
e Location
No. of
Disturbances %
Jubail 1 50%
Ghunan 1 50%
Total 2 100%
Disturbance
Location
No. of
Disturbances %
Safaniyah 1 2%
Khursaniyah 1 2%
Berri 1 2%
Juaymah 6 12%
Abu Ali 1 2%
Shedgum 4 8%
Ain Dar 12 24%
Uthmaniyah 16 32%
Hawiyah 5 10%
Mahasen 1 2%
Ghunan 1 2%
Qatif 1 2%
Total 50 100%
Table 6.3: 2013 Disturbance Locations
Affected SABIC
Table 6.2: 2013 Disturbance Locations
Affected Saudi Aramco
12012dsadasdas 2013 Annual Report
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Figure 6.9: 2013 Percentage Parties of Disturbance Locations – Saudi Aramco
Figure 6.10: 2013 Percentage Parties of Disturbance Locations – SABIC
8%
24%
32%
10%
2%
0%
5%
10%
15%
20%
25%
30%
35%%
Of
Dis
turb
an
ce
Re
co
rds
Disturbance Locations EOA - North Area
EOA - South Area
50% 50%
0%
10%
20%
30%
40%
50%
60%
Jubail Ghunan
% O
f D
sit
urb
an
ce
Rec
ord
s
Disturbance Locations
12012dsadasdas 2013 Annual Report
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6.5 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 2013.
6.5.1 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 2010-2013.
Figure 6.13: 2013 Percentage of CAIDI for S. Aramco & SABIC
113.24
100.44
62.26 59.34
7.13 15.13
31.14
3
0
20
40
60
80
100
120
2010 2011 2012 2013
S. Aramco SABIC
12012dsadasdas 2013 Annual Report
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6.5.2 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,
2010-2013.
Figure 6.14: 2013 Voltage Dip interruptions for S. Aramco and SABIC
1
4
2
3
2
1
4
1
0
1
2
3
4
5
2010 2011 2012 2013
Saudi Aramco SABIC
12012dsadasdas 2013 Annual Report
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7. CONCLUSIONS
During the 2013 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 2013, PQC conducted 2013 PQ workshop and has prepared for 2014 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- "S. Aramco & SABIC Disturbances List", by National Grid SA.
c- " Voltage Dips Impact and Mitigation to Petrochemical Industries-Case
study”, by SABIC.
d- “Islanding Scheme Enhancement: Technology and Methodology”, by
Saudi Aramco.
e- " Power Quality Incidents Record and Discussion ", by National Grid SA.
f- "Power Quality of Smart Grid for Power Distribution Network ", by
KASCT.
g- "Network Reliability Improvement Plan ", by ECRA.
Recommendations that already assigned in the last PQC report (2012 – 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. Inviting speakers to the coming PQ workshops from non PQC members.
c. Conducting presentations by PQC members at the universities for the
students to enhance PQ awareness.
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d. Sending invitations to entities that are non-Power Quality Committee
members for participation in the coming 2013 PQ Workshop by technical
papers and attendance.
Records of the 2013 bulk customers' disturbances have been discussed and
analyzed by the PQC. The analysis of the records reveal that:
a- PQC reported (51) 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 (96.2%) of the total
disturbances introduce significant effects on Saudi Aramco operating
systems.
b- Weather Related class is the main cause of Saudi Aramco Disturbances
(84.0%) while SABIC related disturbances were just two interruptions,
the first caused by Equipment failure class and the other one by Public
and Other impacts.
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, 96.0% of the total disturbances. While 100.0% of
the disturbances that affect SABIC are due to faults with the 230kV
supplying transmission system.
8. 2013 PQC RECOMMENDATIONS
Following are the 2013 PQC recommendations:
1. PQC shall undertake all efforts to conduct the PQ workshop each year.
2. PQC shall conduct two Power Quality Training Courses: Basics & Advanced.
3. Sending invitations to SWCC, Marafiq and KA-CARE for sending representatives
to PQC meetings.
4. Presentation on power quality related topics shall be done by the host of each
meeting.
5. PQC members should share experience and present in each meeting case study or
records of PQ incidents.
6. Presenting a quarterly presentation during the meetings about the disturbances that
affected S. Aramco and SABIC.
7. Constitute committee from PQC members responsible for organizational and
technical aspects for preparation and organizing of the annual Power Quality
workshop and training courses.
8. Members shall revise the PQC charter/manual and make assessment and gap
analysis.
9. Inviting international experts from overseas countries to provide training sessions
before the day of the PQ workshop and as speakers in the PQ workshop.
10. The manufacturers and vendors shall be invited to attend and participate in the PQ
annual workshop.
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11. Inviting speakers to the coming PQ workshops from non PQC members.
12. Higher studies students from the universities shall be invited to present PQ
relevant topics in the PQC meetings and the PQ workshops.
13. Sending invitations to entities that are non-Power Quality Committee members for
participation in the coming the PQ Workshop by technical papers or attendance.
14. PQC recommended that topic about European/USA experience and practices about
the integration of renewable energy resources and their impact on PQ & the solutions
to be presented in 2014 PQ workshop by the selected speakers.
15. PQC recommended that the Distribution Code Review Panel shall introduce short
presentation in 2014 PQ workshop about the Power Quality standards and regulation
contained in the Distribution Code.
16. PQC members shall discuss during the 4th meeting of each year the contents and
the formatting of the annual report.
9. 2014 PQC PLAN
Promote ideas of P.Q.
Maintain and activate the link between industry and Academia.
Follow up the 2013 PQC recommendations.
Prepare for the 2014 PQC annual report of achievement and shortcoming.
Conducting PQ Workshop on 2014.
Continue exchanging Power Quality data and information between PQC members.
Following represent the 2014 PQC scheduled meeting:
Meeting No. Date Host Location
1 Mar 06, 2014 National Grid SA Riyadh
2 May 14, 2014 SABIC Eastern Province
3 May 15, 2014 SABIC Eastern Province
4 Sep 18, 2014 Saudi Aramco Eastern Province
5 Nov 27, 2014 To be Identified in
the 3rd
meeting Makkah
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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 Al-Zahrani SABIC
(Main member)
Abdullah Al-Shehri National Grid SA
(Main member)
Ali Al-Qahtani Saudi Aramco
(Main Member)
Bander Mutwali KACARE
(Main member)
Fayez Al-AJabri ECRA
(Main member)
Hamed Al-Saggaf SEC
(Main member)
Hashim Al-Zahrani 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. Fahad Abu-Mouti KACARE
(Main member)
Dr. Mohamed Smiai KACST
(Main member)
Dr. Mahmoud Kassas KFUPM
(Main member)
Dr. Othman Al-Natheer KACST
(Main member)
Mazen Al-Qurtas SEC
(Main member)
Sameer Sonbol National Grid SA (Main member)