أول كراس كتب باللغة العربية يشرح فيه جهاز إعادة التوصيل التلقائي (Recloser) وجهاز تقسيم الشبكة (Sectionalizer) في شبكات توزيع الطاقة الكهربائية كما يقوم بتوضيح أنواعهما وأجزاءهما وطريقة ربطهما على الشبكة والتحكم بهما بأسلوب مختصر ووافي.
This PPT explains about the circuit breaker, and its types. Then about the need and purpose of the circuit breaker. And finally the testing and types of testing of circuit breakers.
Power cable selection, cable selection Methodology wessam alaslmi
Cable installation and Selection Methodology according to IEC code supported with an example of how to do so.
Explain what practical environment requires when establishing a new facility requires electricity.
explain the purpose of the selected cable.
explain when to use the cable carrier types.
explain how to carry out calculations of such thing.
This gives you brief description to electrical power quality problems such as Ttransients, short and long duration voltage variation, voltage unbalance, waveform distortion,voltage fluctuations and power frequency variations.
Module 2 ee369 KTU syllabus-high voltage ac generation,resonant circuitsAsha Anu Kurian
Generation of high AC voltages-Testing transformer – single unit testing transformer, cascaded transformer – equivalent circuit of cascaded transformer – generation of high frequency AC voltages- series resonance circuit – resonant transformer – voltage regulation.
Practical Medium and High voltage Testing of Electrical Equipment for Enginee...Living Online
Testing is an essential activity in any engineer’s career. Whatever your role in industry (electrical designer, purchase engineer, manufacturer, installation contractor or maintenance engineer) a solid knowledge of tests to be carried out on a given piece of electrical equipment and interpretation of results obtained is a necessity. This workshop is designed to familiarise you with various aspects of testing general electrical equipment and high voltage testing in particular.
Examples will be cited from various international standards regarding the procedure for conducting of tests and interpreting the test results. The need for keeping proper records of tests conducted both in the initial stages and later during routine maintenance will be discussed. Some of the tests are too complex to be performed on a routine basis or may require specialised equipment which may not be normally available to user industries or even manufacturers. This is where the services of an independent and accredited test lab is useful. The role of such labs will be briefly discussed.
WHO SHOULD ATTEND?
Building service designers
Consulting engineers
Control engineers
Data systems planners and managers
Electrical engineers
Electrical technicians
Instrumentation engineers
Instrumentation technicians
Maintenance engineers
Power system protection engineers
Project engineers
MORE INFORMATION: http://www.idc-online.com/content/practical-medium-high-voltage-testing-electrical-equipment-engineers-and-technicians-48
Identification and minimization of HarmonicsMayur Hiwale
In this ppt we will get to know about basic idea of harmonics, types of harmonics , measuring devices and minimizing techniques and also covering the there impact on power system and impact on consumer equipment's.
Modern underground power cables are sophisticated assemblies of insulators, conductors and protective materials. Within these components are sensors, which enable cable operators to monitor conditions along the cable in real time.
The condition of the cable insulation is usually monitored through the following two main methods:
Loss tangent measurements
Partial discharge (PD) measurements
This PPT explains about the circuit breaker, and its types. Then about the need and purpose of the circuit breaker. And finally the testing and types of testing of circuit breakers.
Power cable selection, cable selection Methodology wessam alaslmi
Cable installation and Selection Methodology according to IEC code supported with an example of how to do so.
Explain what practical environment requires when establishing a new facility requires electricity.
explain the purpose of the selected cable.
explain when to use the cable carrier types.
explain how to carry out calculations of such thing.
This gives you brief description to electrical power quality problems such as Ttransients, short and long duration voltage variation, voltage unbalance, waveform distortion,voltage fluctuations and power frequency variations.
Module 2 ee369 KTU syllabus-high voltage ac generation,resonant circuitsAsha Anu Kurian
Generation of high AC voltages-Testing transformer – single unit testing transformer, cascaded transformer – equivalent circuit of cascaded transformer – generation of high frequency AC voltages- series resonance circuit – resonant transformer – voltage regulation.
Practical Medium and High voltage Testing of Electrical Equipment for Enginee...Living Online
Testing is an essential activity in any engineer’s career. Whatever your role in industry (electrical designer, purchase engineer, manufacturer, installation contractor or maintenance engineer) a solid knowledge of tests to be carried out on a given piece of electrical equipment and interpretation of results obtained is a necessity. This workshop is designed to familiarise you with various aspects of testing general electrical equipment and high voltage testing in particular.
Examples will be cited from various international standards regarding the procedure for conducting of tests and interpreting the test results. The need for keeping proper records of tests conducted both in the initial stages and later during routine maintenance will be discussed. Some of the tests are too complex to be performed on a routine basis or may require specialised equipment which may not be normally available to user industries or even manufacturers. This is where the services of an independent and accredited test lab is useful. The role of such labs will be briefly discussed.
WHO SHOULD ATTEND?
Building service designers
Consulting engineers
Control engineers
Data systems planners and managers
Electrical engineers
Electrical technicians
Instrumentation engineers
Instrumentation technicians
Maintenance engineers
Power system protection engineers
Project engineers
MORE INFORMATION: http://www.idc-online.com/content/practical-medium-high-voltage-testing-electrical-equipment-engineers-and-technicians-48
Identification and minimization of HarmonicsMayur Hiwale
In this ppt we will get to know about basic idea of harmonics, types of harmonics , measuring devices and minimizing techniques and also covering the there impact on power system and impact on consumer equipment's.
Modern underground power cables are sophisticated assemblies of insulators, conductors and protective materials. Within these components are sensors, which enable cable operators to monitor conditions along the cable in real time.
The condition of the cable insulation is usually monitored through the following two main methods:
Loss tangent measurements
Partial discharge (PD) measurements
من دراسة طرق وبرامج الصيانة الخاصة بالمحولات وجد انه لابد من عمل الفحوصات والاختبارات المختلفة بالدقة المطلوبة وعند تجميع المحول وقبل تشغيله يجب ملاحظة الأمور الآتية:
التحفة الشدوية في صيانة الكمبيوترات الشخصيةalshadwi
شرح مكونات الحاسب المادية مثل اللوحة الأم والقرص الصلب والمعالج والكروت الإضافية والذاكرة وغيرها، وكذلك شرح تنصيب نظام التشغيل مثل ويندوز اكس بي ويندوز 7 وأوبنتو
Hardware and Software
29. Reclosers & Sectionalizers
28
الفصلالثالث:-بطرأجهزة(Reclosers( و )Sectionalizers)
يتمبطراجلهازبشكل ينالفصل اترم من حمدد عدد متثل مرحلة كلمتعددة احلرممن جزء فإن فصلها وعندشبكة
: وضبطها األجهزة بطر كيفيةعن مثالي أييت وفيما .املغذي شبكة ابقي تغذية يستمر لكي فقط فصله يتم املغذي-
: أوال-بطرم بشكلتوايلم بشكل أيتسلسلالشبكة على
In our example of one autorecloser and 2 sectionalizers, the settings can be as follows:
A. Autorecloser Number of operations before lock out R.OP = 4
B. Autorecloser’s Dead Time one = 0.5 sec. Autorecloser will open for a short time of
0.5seconds allowing the downstream sectionalizers to count.
C. Autorecloser’s Dead Time two = 10 sec. Autorecloser will open now for a longer and second
time to allow sectionalizers S2 to trip in case of permanent fault.
D. Autorecloser’s Dead Time three = 10 sec. Autorecloser will open now for a third time to
allow sectionalizers S1 to trip.
E. Sectionalizer S1 Counter S.OP = 3 (R.OP -1). Having counted 3 times, the sectionalizer will
trip if the downstream fault is permanent.
F. Sectionalizer S2 Counter S.OP = 2 (R.OP -2). Having counted 2 times, the sectionalizer will
trip if the downstream fault is permanent.
G. Sectionalizers opening time = 1.05 sec. If the sectionalizer has counted 2 down times, it will
trip 1.05 seconds after the autorecloser’s opening. This falls within the autorecloser second
dead time of 10 seconds. The line trip sequence will be as shown below.
30. Reclosers & Sectionalizers
29
:ًااثني-بطرم بشكلازيوتأيالشبكة أفرع على
In our example of one autorecloser and 3 sectionalizers, the settings can be as follows:
A. Autorecloser number of operations before lock out R.OP = 3
B. Autorecloser’s Dead Time one = 0.5 sec. Autorecloser will open for a short time of
0.5seconds allowing the downstream sectionalizers to count.
C. Autorecloser’s Dead Time two = 10 sec. Autorecloser will open now for a longer time to
allow the sectionalizer to trip in case of permanent fault.
D. Sectionalizer Counter S.OP = 2 (R.OP -1). Having counted 2 times, the sectionalizer will
trip if the downstream fault is permanent.
31. Reclosers & Sectionalizers
30
E. Sectionalizer opening time = 1.05 sec. If the sectionalizer has counted 2 down times, it will
trip 1.05 seconds after the autorecloser’s opening. This falls within the autorecloser second
dead time of 10 seconds.
The line trip sequence will be as shown in below.
33. Reclosers & Sectionalizers
32
املصادر
العلمية الكتب
1. Power Distribution Engineering: Fundamentals and Applications James J.
Burke Taylor & Francis Group, LLC, 1994
2. Network Protection & Automation Guide Siemens
الكااتلوجاتالفنية اتراملنشوو
3. Reclosers Types RVE and WVE S280-40-8 Eaton’s Cooper Power
Systems Pittsburgh, PA 15230 USA
4. Reclosers Types RXE and WE S280-40-7 Cooper Power Systems
Pewaukee, WI 53072 USA 2004
5. Reclosers Types VWE, VWVE27, VWVE38X, WE, WVE27, and
WVE38X 280-40 Cooper Power Systems Pewaukee, WI 53072 USA
2005
6. Reclosers Types VWE, VWVE27, VWVE38X, WE, WVE27, and
WVE38X; three phase electronically controlled; installation and operation
instructions electronically controlled; installation and operation Eaton’s
Cooper Power Systems USA 2017
7. Outdoor vacuum circuit-breakers and reclosers for medium voltage
Siemens AG Erlangen Germany 2010
8. Molded Vacuum Recloser Thomas&Betts
9. Overhead distribution switchgear Eaton’s Cooper Power Systems
Cleveland, OH 44122 USA 2014
10. OSM Automatic Circuit Recloser - Technical Manual Tavrida Electric
2010.
11. SF6 GAS INSULATED VACUUM INTERRUPTION POLE
MOUNTED Automatic Circuit Recloser No. SSIEC-GRC-00100
Shingsung Industrial Electric Co.,Ltd Republic of Korea.
34. Reclosers & Sectionalizers
33
12. Sectionalizers Catalog information Eaton’s Cooper Power Systems
Cleveland, OH 44122 USA 2014
13. Stelmec SSSG12 OUTDOOR SF6 GAS INSULATED
SECTIONALIZER India
14. ABB AutoLink resettable electronic sectionalizers Buenos Aires
Argentina 2012
15. Hubbell Single-Phase Programmable Resettable Sectionalizers 2014
العلمية والدورايت اجملالت
16. Int. Journal of Engineering Research and Application/ Vol. 8, Issue 7
(Part -V) July 2018, pp 01-05/Modelling of Smart Auto-Recloser with
Over Current Protection/ Abdrabou Ashour
17.األول العدد ابءركهيعزلتو البحرية كةشر /مصر ابءرلكه القابضة كةية/الشرراملص ابءرالكه ارةزو–يناير-2016
اإلنرتنيت شبكة مواقع
18. http://www.cooperindustries.com/content/public/en/power_systems/produ
cts/overhead_distributionequipment/Reclosers.html
19. https://www.bayt.com/ar/specialties/q/80771/what-s-the-relation-between-
recloser-and-sectionalizer/
20. https://electrical-engineering-portal.com/sf6-gas-as-insulating-and-arc-
quenching-medium
21. http://www.engineermaths.com/2012/03/automatic-circuit-recloser.html
22. http://engineering.electrical-equipment.org/safety/how-to-select-a-
sectionalizer.html