Abstract:RESUMENEste artículo presenta las características principales de una librería de módulos desarrollada para representar dispositivos de protección de una red de distribución de energía eléctrica con generación distribuida (GD). El impacto de la generación distribuida depende, entre otros aspectos, del diseño del sistema de protección y de la coordinación entre los diferentes dispositivos de protección. La presencia de unidades generadoras altera el flujo radial inherente a un sistema de distribución y afecta al… Show more
“…For proper coordination, there should be a time difference of 200 ms between primary and secondary protection as the recloser characteristics curve follow . Where TDS is the time dial setting of recloser, A and B are constants.…”
Section: Case Studymentioning
confidence: 99%
“…as the recloser characteristics curve follow (10). 39,40 Where TDS is the time dial setting of recloser, A and B are constants. I pick-up is the value of current at which it starts picking.…”
Summary
The distributed generation (DG) is getting extensively integrated in existing power distribution system because of the massive development in green energy technologies and their economical, technical, and environment benefits. However, apart from beneficial aspects, DGs also have various and complex technical limitations, major of which are loss of protection coordination among protection devices which can lead to malfunctioning of protection devices, blind protection, fuse blowing, and permanent outage of power supply due to temporary faults. In this paper, a novel curve fitting technique is designed to restore much influenced recloser‐fuse coordination using the directional properties of midline recloser for upstream and downstream protection devices coordination. It also works on fuse‐saving scheme. Using Electrical Transient Analysis Program (ETAP) Software, the proposed methodology is implemented on a real 11 kV Rajewala radial distribution feeder starting from 132 kV Eimnabad grid station, district Gujranwala, Pakistan. Present here are some key results. Different case studies are carried out and results validate the effectiveness of the proposed methodology, and the coordination among protection devices is sustained even after DGs integration in the system.
“…For proper coordination, there should be a time difference of 200 ms between primary and secondary protection as the recloser characteristics curve follow . Where TDS is the time dial setting of recloser, A and B are constants.…”
Section: Case Studymentioning
confidence: 99%
“…as the recloser characteristics curve follow (10). 39,40 Where TDS is the time dial setting of recloser, A and B are constants. I pick-up is the value of current at which it starts picking.…”
Summary
The distributed generation (DG) is getting extensively integrated in existing power distribution system because of the massive development in green energy technologies and their economical, technical, and environment benefits. However, apart from beneficial aspects, DGs also have various and complex technical limitations, major of which are loss of protection coordination among protection devices which can lead to malfunctioning of protection devices, blind protection, fuse blowing, and permanent outage of power supply due to temporary faults. In this paper, a novel curve fitting technique is designed to restore much influenced recloser‐fuse coordination using the directional properties of midline recloser for upstream and downstream protection devices coordination. It also works on fuse‐saving scheme. Using Electrical Transient Analysis Program (ETAP) Software, the proposed methodology is implemented on a real 11 kV Rajewala radial distribution feeder starting from 132 kV Eimnabad grid station, district Gujranwala, Pakistan. Present here are some key results. Different case studies are carried out and results validate the effectiveness of the proposed methodology, and the coordination among protection devices is sustained even after DGs integration in the system.
“…These equations show that fault current is always higher for a fuse in the presence of DGs so the fuse is operated before the recloser tripping causing a false tripping. The recloser follows the following equation [17,18]:…”
Section: Mathematical Modelingmentioning
confidence: 99%
“…For typical overcurrent protection coordination, the following constraints are to be met for proper coordination [18][19][20].…”
This paper proposes an effective strategy to overcome the impacts on coordination among protection devices due to distributed generator (DG) integration. Increased fault current magnitude and changes in power flow directions are the major impacts imposed by DGs on a typical distribution system. The recloser-fuse coordination is much influenced upon the integration of DGs. The proposed approach presents the rehabilitation of recloser-fuse coordination for post-DG integration effects using the directional properties of a recloser. The simulation results show that coordination among protection devices can be regained using fast operation of the recloser to design a fuse saving scheme in the scenario of temporary fault occurrence. The designed scheme also works satisfactorily for the isolation of a permanently faulted section of the feeder. This technique is verified by simulation results performed on a real 11-kV radial distribution feeder for different fault locations and DG sizes.
“…Как считает ряд исследователей, решить эту про-блему может замена предохранителей на секциона-лайзеры, срабатывание которых не зависят от ВТХ реклоузеров [14].…”
Section: влияние интеграции ирг в распределительные сети на работу срunclassified
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