Voltage dip and long duration interruption (LDI) are among the most costly power quality phenomena. In this study, a Monte‐Carlo based approach is proposed to consider cost of sensitive loads disruption caused by LDI in optimal planning synchronous distributed generations (SDGs). The idea link between trip probability due their yearly costs employing simulation acquiring total during horizon. addition along with traditional objectives like network upgrade loss allows utilities include...

One of the recently arisen issues for transformerless grid‐connected photovoltaic (PV) systems is high‐frequency leakage current, which flows through parasitic capacitance PV system and neutral grounding resistor (NGR) grid. This paper deals with a systemic analysis on large considering interconnecting conductors. A new Y‐bus model proposed to analyse current strings/arrays any size in domain. In model, different capacitances panels inductance cables are considered. Subsequently, two‐port...

Voltage dip is a serious and effective disturbance for many industrial customers. This phenomenon competes with long interruption causing the largest annual economic loss. The integration of synchronous distributed generations (SDGs) into power systems affects system voltage performance. In this paper, methodology proposed, which optimizes performance in presence SDGs minimizes total cost by presenting an interpretation numbers. New indices are proposed based on modified Monte Carlo...

Harmonics and waveform distortion are substantial power quality concerns for systems with high penetration of renewable energy generation non-linear loads. interharmonics should be mitigated efficient proper operation grids, harmonic injection from electric loads devices. In this paper, an intelligent Active Power Filter (APF) based on Adaptive Linear Neuron (Adaline) is proposed which can provide accurate estimation mitigation in real-time without any prior knowledge about...

Direct harmonic monitoring of a complete power system can be costly and impractical. Harmonic State Estimation (HSE) refers to indirect techniques, where unknown variables are estimated based on limited observations. HSE is crucial in developing systems thus enabling high quality. In this paper, universal formulation for derived Simplified Bayesian Learning (SBL) technique Markov Chain Monte Carlo (MCMC) simulation proposed solve the problem different cases simultaneously operating sources....

In modern power systems, harmonics are amongst the significant issues attributed to renewable energy sources and nonlinear loads.Direct harmonic monitoring of entire system may be too costly or impractical, measured data could limited.In this paper, a new methodology is proposed estimate current rms values unmonitored sources, based on voltage magnitudes only, at limited number monitored buses.A technique output curve-normalization employed in pre-processing.Subsequently, method refine...

Voltage quality is a one of the major concerns in distribution systems. Distributed Generations (DGs) have potential to improve voltage quality, if optimally planned and operated. Considering problem DG siting sizing, this paper aims at integrating technical factors, particularly planning DGs. Hence, methodology proposed which optimizes presence DGs can be used as objectives multi-objective or an intermediate stage usual planning. Modified indices are consider factors including profile,...

Identification of harmonic sources contributing to distortion, and characterization current injected by them, are crucial tasks in analysis modern power systems. In this paper, these addressed based on the permissible limits recommended IEEE 519 Standard, with a determination whether or not harmonics within limits. If violated, extent violations characterized provide information about levels system facilitate remedial actions if necessary. A novel feature extraction method is proposed,...

Harmonic analysis in power systems is a significant challenge due to the increasing prominence of harmonics and owing customer requirements for high quality. This paper proposes new harmonic flow method considers different key categories nonlinear loads: loads with defined V-I functions, thyristor-controlled converters, inverters. A novel formulation each device derived effect these sources are studied single-source multiple source scenarios. not only simpler than conventional methods but...