contents · operation of their major industrial customers specifically saudi aramco and ......

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


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:


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)


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


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


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:



Time : 09:30 AM- 01:00 PM

Venue : Al-Khobar


5


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"



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:


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


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:



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:


Time : 09:30 AM- 01:00 PM

Venue : Dhahran


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


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:


Time : 09:30 AM- 01:00 PM

Venue : Makkah


8



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"


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"



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



4 Dec 18, 2013 ECRA Riyadh


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


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


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


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


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


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




29%

71%

380kV Transmission Interruptions

230kV Transmission Interruptions


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


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


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


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


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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


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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.


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.


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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



4 Dec 18, 2013 ECRA Riyadh


24

Appendix (A)


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)

contents · operation of their major industrial customers specifically saudi aramco and ......

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