This article proposes a pitch control scheme for rapid active power of permanent-magnet synchronous generator (PMSG)-based wind plant (WPP). To minimize the angle fluctuation, target is determined by using an analytical calculation, not conventional proportional-integral controller. When signal received from grid operator, WPP controller sends reference to each PMSG. The proposed obtains coefficient (C <sub xmlns:mml="http://www.w3.org/1998/Math/MathML"...

An investigation into the possibility of using linear programming to design levelling networks been carried out. The method is shown be practically useful but further research needed before it can described as universally applicable. A brief introduction included.

A hybrid energy storage system (HESS) comprising of battery and supercapacitor (SC) has been employed to resolve the issues faced by single systems used for electric vehicles (EVs) application. The ESS is able provide better mileage, but unable deliver a higher speed. Also, under high-stress level undergoes degradation requires frequent replacement. Besides, SC speed; however, it desired mileage vehicle. In order solve it, HESS required. Various topologies exist in literature, which defines...

Rice (Oryza sativa L.) is first staple crop of Nepal. The national average yield rice less than its potential yield, for which poor agronomic management has been reported as the critical factor. Among various agro-management practices seedling age, seeding density and nitrogen rates significantly affect growth rice. lower produces taller plant, more effective tiller, sterility higher grain yield. On other hand, older age from gives lowest Transplanting younger with low application...

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Wind turbine generator should inject the reactive power to support grid voltage and suppress increase in DC-link during a fault order fulfil low ride-through (LVRT) requirement codes. This paper proposes rapid LVRT control of Doubly Fed Induction Generator (DFIG) based Power Plants (WPPs) on adaptive current characteristics that suppresses rise by reducing torque rotor side converter (RSC) DFIG proportion dip weighting factor at terminals DFIGs. The priorities from real more is proposed this...

Wind turbine generators should be kept connected to a power grid, while supporting the voltage recovery in case of grid fault meet low ride-through requirement some codes. This paper proposes coordinated control scheme that prevents increase DC-link by reducing active machine side converter permanent magnet synchronous (PMSGs) proportion dip at terminal PMSGs. The proposed changes current priorities from reactive inject more for severe depending on dip. In addition, grid-side operates mode...

Recent grid codes require connected Photovoltaic (PV) Systems to regulate their power fed grid. Power curtailment through modification of Maximum Point Tracking (MPPT) algorithm and use energy storage system for storing surplus are the popular methods that have been employed meet requirement. When used individually, former method does not make optimum utilization installed PV while later presents challenge higher average State Charge (SoC) during periods with high insolation. This paper...

As per the grid code requirements for low voltage ride-through (LVRT), wind turbine generator (WTG) should survive and produce reactive power to prop up during a disturbance. The manuscript proposes an enhanced LVRT control capability of doubly fed induction (DFIG) based plant (WPP). To accomplish it, rotor side converter (RSC) controller DFIG is provided with adaptive current (I <inf xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">Q</inf> -V)...

The voltage at all buses in a power system should be kept constant order to achieve regulation. This manuscript evaluates various regulation control schemes for wind plant (WPP) that uses doubly-fed induction generator (DFIG). These are particularly appropriate injecting the reactive fortify point of interconnection (POI) throughout disturbance without using external devices such as flexible AC transmission (FACTS) WPP. employed DFIG and WPP controllers reviewed, them also classified....

Distribution system is an indispensable component of the power delivery system. The voltage, loadability, reliability, and stability are more vulnerable to changes in operations. integration distributed generation (DG) units distribution network affects loss, loadability. As load demand increasing, it needed build new infrastructure or need adjust existing one. application DG increasing day by projected rise upcoming days. must be optimal manner such that will operate with peak efficiency....

This paper proposes a pitch control scheme for rapid active power of permanent magnet synchronous generator (PMSG)-based wind plant (WPP). To minimize the pitch-angle fluctuation, target is determined by using an analytical calculation, not conventional proportional-integral (PI) controller. When signal received from grid operator, WPP controller sends reference to each PMSG. The proposed obtains coefficient (c <sub xmlns:mml="http://www.w3.org/1998/Math/MathML"...

Unbalanced three-phase currents are drawn using the conventional current controllers in electric drive system of a permanent magnet synchronous machine (PMSM) with asymmetric phases. Consequently, negative sequence appears, which causes torque ripple PMSM. The yields noise and mechanical vibrations PMSM drive, reducing reliability, efficiency, life span machine. proportional-integral (PI) controller is unable to mitigate for phases due its incapability dealing unbalanced sinusoidal input...

An optimization model based protection coordination method of directional overcurrent relays (DOCRs) in highly interconnected large size meshed power system network is a complex task due to its nature constrained non-linear problem. To overcome this complexity DOCRs coordination, paper proposes an optimal considering selection standard time-current characteristic curves using enhanced linear population reduction technique success history adaptive differential evolution (enhanced...

The adaptation of renewable energy has been increasing in a very encouraging way all over the world. Among various resources, wind and solar are promising sources alternative energy. Wind photovoltaic (PV) have employed parallel as hybrid system for better electricity service. This paper presents case study modeling wind-solar Hriharpur Gadi village, Sindhuli District, Nepal. yields 110kWh per day meeting village’s demand 87 kWh day. Moreover, power with battery storage is modeled using...

Restructuring of power industry has now become a global trend as method best practice, reforming the sector towards more competitive market. In retail energy market, there are multiple choices for end-users based on their bidding price, reliability, quality and mutual agreements. The participants take timely information from market can make prepare strategies to get benefits. consumers adjust loads various offers price signals since aim is buy cheaper with acceptable quality. Every...

The grid codes define low voltage ride-through (LVRT) as capability of wind turbine generator (WTG) to support the by injecting reactive power and suppress rise DC-link inrush rotor current in side converter (RSC) doubly fed induction (DFIG) during a fault. Moreover, increases significantly severe disturbances if any protection schemes are not employed. Therefore, must be used avoid damage This paper proposes an enhanced LVRT control scheme DFIG employing crowbar RSC braking chopper across...