A novel hybrid islanding detection method combination of SMS and Q-f for islanding detection of inverter- based DG

New Low-Distortion $Q$–$f$ Droop Plus Correlation Anti-Islanding Detection Method for Power Converters in Distributed Generation Systems

“…The method is based on the positive feedback principle like other known techniques [12]- [15], [26]. However, this method does not reduce the power factor quality, and it works properly if the power factor reference is not the unity.…”

“…There are different types of disturbances among positive feedback methods like Frequency Drift, Sliding Mode Frequency Shift (SMS) [11], Sandia Voltage Shift (SVS), or based on reactive power disturbances [12]- [14], among others [15]. The proposed Q-f correlation method belongs to the latter category.…”

Computational Intelligence based techniques for islanding detection of distributed generation in distribution network: A review

“…In these techniques, the active techniques are used only when passive technique is unable to distinguish islanding events. The examples of hybrid islanding detection techniques include methods based on voltage unbalance and frequency set point [107], method based on rate of voltage change and real power shift [4], method based on proportional power spectral density and active frequency drift [108], method based on monitoring of high frequency components of DG output power, output LCL filter, current controller [109], method based on rate of change of reactive power and load connecting strategy [110], method based on monitoring current and active power of circuit breakers [111], and method based on slip mode frequency shift and reactive power versus frequency [112]. Fig.…”

Protection Coordination and Anti Islanding Protection Solution for Biomass Power Plant Connected on Distribution Network

“…In the literature, the problem of passive and active methods of protection of isolated operation is well elaborated [1][2][3][4].New methods of active protection especially for PV power plants are based on 3rd harmonic component of output current to diagnose an anti islanding [5]. Also, an algorithm which is a combination of slip mode frequency-shift (SMS) and reactive power versus frequency (Q−f) represents an active method forthe islanding phenomena detection [6]. A passive islanding detection scheme for both synchronous and inverter based distributed generations interfaced to a microgrid using Decision Tree method is presented in [7].…”