Protection coordination for a distribution system in the presence of distributed generation

Abstract

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.

Challenges and novel solution for wide‐area protection due to renewable sources integration into smart grid: an extensive review

“…The protection can ensure the interruption of supply is given in [85]. The current protection challenges and solutions for distributed generation penetration in the distribution system are discussed in many papers [86][87][88][89][90][91][92]. The protection schemes using overcurrent relays and fuses for re-coordination are well extensively discussed and covered.…”

Optimum recloser–fuse coordination for radial distribution systems in the presence of multiple distributed generations

“…In (11) and (12), I FR, j is the fault current passing through the recloser for fault at node j and PCS the pick-up current setting for the recloser defined in (2). The operating times of fuses are defined as follows [8]:…”

“…In [10], a simple and effective strategy by utilising directional properties of microprocessor-based recloser and feeder relays has been discussed in order to prevent recloser-fuse miscoordination in the presence of DGs. Also, in [11], to mitigate the impact of DGs integration to radial distribution system, activation of directional feature of recloser and feeder relay along with modification of recloser curve has been discussed. Subsequently, various types fault current limiters (FCLs) including superconducting fault current limiters (SFCLs) have also been proposed to restore original recloser-fuse coordination by limiting the short-circuit contributions from DGs [12][13][14].…”

Recloser-Fuse settings in distribution systems with optimizing multiple distributed generation considering technical aspects

“…In [16], An optimum setting of the recloser and the fuses using interior point method (IPM) based algorithm was introduced to remain proper coordination for multiple network conditions systems in the presence of FCLs with single/multiple DGs. Integrating DG in radial system can mitigate, activate the recloser feature and feeder relay with change in recloser curve by modifying the time multiplier setting using minimum ratio of recloser current to fusing current to insure that the coordination is achieved as illustrated in [17]. In [18], an adaptive setting of recloser is performed by adjustment the instantaneous over current device with the presence of different sizes of DG.…”