Voltage Stabilization Articles
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Meaning and role of reactive power quadrants in electric meter
The reactive power quadrants in electric meter refer to dividing a plane coordinate system into four regions, with the horizontal axis representing reactive power and the vertical axis representing active power. Each region represents a different combination of reactive power and active power states. These four regions are known as quadrants I, II, III, and IV, each with its own meaning and ...
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8 Parts of Electric Energy Meter
An electric energy meter is an instrument used to measure electrical energy, which is also known as a kilowatt-hour meter or electricity meter. Its unit of measurement is the degree or kilowatt-hour. It is a product of power and time and can be used to measure the power consumption of end users, serving as the basis for billing by electric companies. Electricity is an indispensable energy source ...
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Power Quality: Top Protection
The Power Quality problems of an electrical distribution network are often generated locally within the structures and can depend on various situations, such as, for example, construction works, switching on high loads, faulty distribution components and particular basic electrical disturbances. Furthermore, external causes such as atmospheric events (hurricanes, lightning, snow, ice and ...
By IREM SpA
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Hydro Power. Power Integrator Power Pilot
The Power Pilot power integrator has been specifically designed for use in hydroelectric plants with off-grid installations. The Power Pilot has been designed to allow the delivery of power in typically critical load conditions for the hydroelectric power production unit only and to improve the quality of the power supply to the users. Dedicated to Off-Grid Installations Those who manage a ...
By IREM SpA
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Steroguard Line Conditioners: customized Power Quality
With the increasingly widespread use of sensitive electrical and electronic equipment, it is essential to have a “clean” and stable mains power supply to protect and make critical applications reliable. IREM Steroguard Line Conditioners represent the solution for most of the disturbances coming from the electrical network: they offer complete galvanic isolation of the ...
By IREM SpA
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PowerSines LEC Saves 30% on Outdoor Lighting & High Masts in Savannah Port Case Study
Facilitating global trade through strategic U.S. East Coast gateways, the Georgia Ports Authority is a leader in the operation of modern terminals and in meeting the demands of international business. The port of Savannah specializes in the handling of container, reefer, breakbulk and RoRo cargoes. Georgia Ports Executive Director, Curtis Foltz, states that "This [PowerSines] new technology is ...
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Dacian Gold’s Mt Morgans Gold Project, Australia - Case study
Energy solutions provider Zenith Energy have signed a power purchase agreement (PPA) with Dacian Gold to deliver a 17MW gas fired power station at Mt Morgans Gold Project (MMGP) in Western Australia. Fuel gas for the power station will be delivered via a new four kilometer gas pipeline lateral supplied by APA Group. Under the terms of the PPA, Zenith Energy will construct the power station to ...
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Change 60Hz to 50Hz Power
In conventional power supplies, the mains is rectified (that means the negative parts of the main cycle are flipped over to become positive). This gives 50 or 60 positive pulses per second. These pulses are used to charge up capacitors that store the charge between top ups. If you put a scope on the capacitor, you will see a sawtooth waveform that shows the top of the pulse, then the voltage ...
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Optimal reactive power dispatch based on the improved seeker optimisation algorithm and statistical analysis
Optimal reactive power dispatch (ORPD) is one of the important non–linear mixed–variable optimisation problems in power system which includes both continuous and discrete control variables satisfying both equality and inequality constraints. This paper presents a new evolutionary optimisation algorithm to solve the optimal reactive power dispatch problem with operational constraints using the ...
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Optimal generation expansion planning considering maximum loadability limit
This paper describes a new approach to generation expansion planning (GEP) problem to optimise simultaneously multiple objectives such as cost and stability margin. It is formulated as a combinational optimisation problem in order to determine the type and capacity of the new generations as well as their timing and placement. This study presents a comprehensive model of hierarchical optimisation ...
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Voltage stability of radial distribution networks for different types of loads
The paper presents voltage stability analysis of radial distribution networks. A new voltage stability index is proposed for identifying the node, which is most sensitive to voltage collapse. It is shown that the node, at which the value of voltage stability index is minimum, is more sensitive to voltage collapse. For the purpose of voltage stability analysis, constant power, constant current, ...
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Optimal location of DG for maintaining distribution system stability: a hybrid technique
To enhance the distribution power quality and maintains the voltage stability is a challenging tasks in the complex distribution network. This can be achieved through the distributed generation (DG). In this paper, a hybrid technique has been proposed which improves the distribution stability by allocating the DG at the optimal place. This technique uses the artificial neural network (ANN) and ...
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Identification of weak buses and elements participation in voltage instability of large multi bus power system
In heavily loaded systems, voltage stability limit is usually dominant and voltage instability is usually observed following large disturbance. This is typically the case in the deregulated environment as the transmission systems are operating under more stressed condition due to increased transaction level associated with open access. In this paper simple voltage stability analysis is carried ...
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Stabilisation of grid connected wind farms using doubly–fed induction generators with FACTS controllers
The impact of the wind generation on the power systems is no longer negligible if high penetration levels are going to be achieved. It is very important to boost the transfer capability of the transmission system while improving the utilisation of transmission assets to accommodate high penetration of wind power on the network. Hence, more sophisticated control schemes using advanced power ...
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Advanced Voltage Optimsation Technology
Electric appliances with inductive characteristics, such as refrigerators, air conditioners and compressors are more efficient when the voltage suppliedis regulated and stabilised. This article will explain the physical principles behind voltage reduction on inductive loads, and will include case studies depicting energy savings using powersines comec (a universal energyefficiency controller) in ...
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Weakest bus identification for optimal location for FACTS systems in multimachine power network
As a result of the electronic revolution in power electronics technology, a number of control devices under the term flexible AC transmission system (FACTS) have been proposed and implemented and this has led to improvements in efficient energy transfer, reduced looses and maximised use of existing infrastructure. FACTS controllers have been designed using high power electronic system components, ...
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Voltage stabilisation of SMES VSI DC-link and compensation of reactive power by SMES using optimised switching strategies
This paper presents a novel and optimised switching strategy and control approach for a three-level two-quadrant chopper in a three-level neutral point clamped (NPC) voltage source inverter (VSI) superconducting magnetic energy storage (SMES). Using the proposed switching strategy, the voltage of the inverter capacitors in SMES can be independently controlled. Also, the minimum power and ...
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A novel particle swarm optimisation self-regulating stand-alone wave energy conversion scheme
The paper presents a novel stabilisation scheme system for a wave energy converter (WEC) using permanent magnet linear generator (PMLG) connected to a six-pulse diode rectifier. The proposed controller of WEC-battery renewable energy system is based on multi-objective particle swarm optimisation (MOPSO) technique. The optimisation algorithm is implemented to control a novel low cost dynamic AC ...
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Why the fossil-fuelled reactor fleet in France will not be affected by an evolution of the wind power capacity
Today's power electronics can confer high-performance adjustment capabilities on any technological object, including the frequency-power and voltage tuning of modern, synchronous-type wind turbines. However, this will not enable such devices to steadily produce electric power from an uncontrolled mechanical energy. Thus they cannot be considered independent generation units: the need to ...
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Study, modelling and control of a single-phase power factor corrector based on the Sheppard-Taylor topology
In this paper, a single-phase power factor corrector (PFC) based on the Sheppard-Taylor topology is studied. A novel mathematical representation of the converter is elaborated using the state-space averaging technique. In order to emphasise the usefulness of such model, three pulse-width-modulated (PWM) multi-loops control schemes are proposed and developed in the aim of ensuring a unity power ...
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