نتایج جستجو برای: unbalanced grid voltage

تعداد نتایج: 195068  

In order to solve the problem of voltage drop and voltage imbalance in the distribution systems, the injection of reactive power by multiple static compensators is used. The distributed generation such as photovoltaic systems could play a role of the static compensators by producing reactive power. In this paper, the integral to droop line algorithm is used to control the reactive power in busb...

2017
Wenyu Wang Nanpeng Yu Zhouyu Lu

Many important distribution network applications, such as load balancing, state-estimation, and network reconfiguration, depend on accurate phase connectivity information. The existing data-driven phase identification algorithms have a few drawbacks. First, the existing algorithms require the number of phase connections as an input. Second, they can not provide accurate results when there is a ...

Journal: :Electric Power Systems Research 2021

Grid-feeding inverters require much better operation monitoring and improved performance for their safe efficient integration into the power system. Specifically, these must participate in grid stability enhancement under faulty conditions without any disconnection. In this regard, a fault ride-through capability is proposed an inductive filtered grid-feeding inverter, which controlled both pos...

Journal: :Electronics 2022

In this paper, a grid-connected photovoltaic (PV) generation system is proposed with the purpose of providing support to low-voltage grids, namely through elimination or attenuation grid imbalances. This compensation must consider load types, which can be either linear non-linear, and whether reactive power current harmonics generated by non-linear loads need compensated in addition unbalanced ...

2013
T. Murali Krishna N. V. Ramana S. Kamakshaiah

This paper presents a novel distribution power flow algorithm to estimate losses and analyze unbalanced distribution systems. An unbalanced distribution network is decomposed into clusters. The unbalanced laterals are solved using the backward/forward sweep method in each phase. The clustering of total network makes faster computation. The three phase modeling of all the distribution transforme...

Journal: :Energy Engineering 2022

Under complex grid conditions, the voltage usually has an imbalance, low order harmonics, and a small of DC bias. When contains harmonics amount bias component, inverter's output current cannot meet connection requirements, there is three-phase imbalance in control strategy common VSG under unbalanced voltage. A theoretical analysis non-ideal power grids carried out, operating conditions propos...

Journal: :Anais do VI Simpósio Brasileiro de Sistemas Elétricos 2022

The three-phase four-wire VSCs voltage source converters are used to connect sustainable sources the distribution system where loads predominantly single-phase. with unbalanced neutral has unwanted negative and zero sequence components. In this condition synchronism between VSC electrical grid that is done using PLL (Phase Locked Loop) affected. SRF-PLL (Synchronous Reference Frame-PLL) popular...

2016
P. B. Chennaiah G. Venkatesh

The matrix association of appropriated era frameworks, basically wind and Photo voltaic (PV) frameworks are turning out to be extremely demanding. The transmission framework administrators (TSOs) are especially stressed over the low voltage ride through prerequisites (LVRT) by using fuzzy logic controller. Cures by establishment of STATCOMs and element voltage controllers (DVRs), disseminated e...

In conventional power systems, frequency and voltage deviations are chosen as indexes for characterizing conventional power system security. While  in an autonomous micro grid with Electronically Interfaced Distributed Generation (EIDG), frequency and voltage deviations  against power and loads disturbances perfectly controlled by f-P and V-Q controller. Unlike conventional power syst...

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