Dispersed generation impact on distribution networks

Hadjsaïd, Nourédine; Canard, Jean-François; Dumas, F.

doi:10.1109/67.755642

Cited by 353 publications

(126 citation statements)

References 5 publications

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“…Extensive research is done to address possible protection problems in distribution grids including distributed generation. For instance, in (Deuse et al, 2007;Doyle, 2002;Driesen & Belmans, 2006;Driesen et al, 2007;Hadjsaid et al, 1999;Kauhamieni & Kumpulainen, 2004) it is discussed that the following protection problems might appear:…”

Section: Protection Problemsmentioning

confidence: 99%

“…To prevent fault detection problems a first attempt is to modify the relay settings of the relays and reclosers (Baran & El-Markabi, 2004;Hadjsaid et al, 1999;Kumpulainen et al, 2005;Mäki et al, 2004). The generator contribution leads to a reduction of the grid contribution to the fault current hence the pick-up current of the relays has to be reduced.…”

Section: Prevention Of Detection and Selectivity Problemsmentioning

confidence: 99%

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Effect of DG on Distribution Grid Protection

Coster¹,

Myrzik²,

Kling³

2010

Distributed Generation

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Section: Protection Problemsmentioning

confidence: 99%

Section: Prevention Of Detection and Selectivity Problemsmentioning

confidence: 99%

Effect of DG on Distribution Grid Protection

Coster¹,

Myrzik²,

Kling³

2010

Distributed Generation

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“…Some advantages appear due to the influences followed as; decrease in transmission and distribution line losses, lowering the pick power demands, and better voltage profile. However some disadvantages arise as; changing power flows directions, voltage rises in condition of low power demand, harmonic-flicker issues and protection problems such as selectivity loss [2]. Grid connected DG sources creates an impact which increases the short circuit level of network depend on its output power, power converter interface and generator electrical parameters.…”

Section: Introductionmentioning

confidence: 99%

Effects of Distributed Generation on Overcurrent Relay Coordination and an Adaptive Protection Scheme

Ilik

Arsoy

2017

IOP Conf. Ser.: Earth Environ. Sci.

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Abstract. Integration of distributed generation (DG) such as renewable energy sources to electrical network becomes more prevalent in recent years. Grid connection of DG has effects on load flow directions, voltage profile, short circuit power and especially protection selectivity. Applying traditional overcurrent protection scheme is inconvenient when system reliability and sustainability are considered. If a fault happens in DG connected network, short circuit contribution of DG, creates additional branch element feeding the fault current; compels to consider directional overcurrent (OC) protection scheme. Protection coordination might get lost for changing working conditions when DG sources are connected. Directional overcurrent relay parameters are determined for downstream and upstream relays when different combinations of DG connected singular or plural, on radial test system. With the help of proposed flow chart, relay parameters are updated and coordination between relays kept sustained for different working conditions in DigSILENT PowerFactory program.

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“…However there are several issues concerning the integration of DGs with existing power system networks; that needs to be addressed in [19][20]. The integration of DG changes the system from passive to active networks, which affects the reliability and operation of a power system network as given in [21][22]. Furthermore, the nonoptimal placement of DG can result in an increase of the system losses and thus making the voltage profile lower than the allowable limit by referring to Griffin et al [23].…”

Section: Introductionmentioning

confidence: 99%

Loss Allocation reduction to customers by optimal location and sizing of DG in electrical distribution systems

Ramana¹,

Ganesh²,

Sivanagaraju³

2017

ijeei

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This paper deals radial distribution system power losses allocation to connected consumers before and after distribution generator (DG) in a deregulated environment. Allocation of power loss is made in a proposed exact method way, which is calculated based on allocating power losses to consumers by taking each branch current suppling to customer load from substation to customer load. Proposes a new methodology to reduce the burden of loss allocation to customers by allocating the optimal DG size at best location. The best location derive based on highest value line of power stability index (PSI) and increase in small steps of DG values in best location obtain the optimal DG size at the best location. The impact of DG on voltage profile, system losses and customer losses allocation are visualized by an analytical approach. The robustness and scalability of proposed method is tested on 12 bus and 69-bus radial distribution networks and compared with the existing Golden Section Search (GSS) algorithm

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Dispersed generation impact on distribution networks

Cited by 353 publications

References 5 publications

Effect of DG on Distribution Grid Protection

Effect of DG on Distribution Grid Protection

Effects of Distributed Generation on Overcurrent Relay Coordination and an Adaptive Protection Scheme

Loss Allocation reduction to customers by optimal location and sizing of DG in electrical distribution systems

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