Review on Frequency Adjustment for Power Systems with Grid Connected Wind Farm

Ahmad, Kanij; Mohammad, Mohammad; Quamruzzaman, Muhammad

doi:10.1109/icrest.2019.8644155

Cited by 14 publications

(2 citation statements)

References 18 publications

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“…When the grid frequency drops, the inertia controller is a widely used method specially to respond quickly to grid frequency drop during the first few seconds (<10 s). It can be realised by designing proper inertia controllers or droop controllers to utilise the rotating kinetic energy of a wind turbine (WT) [5, 6]. AGC is specifically used to respond to frequency drops within 10 s to tens of seconds.…”

Section: Introductionmentioning

confidence: 99%

Active power dynamic interval control based on operation data mining for wind farms to improve regulation performance in AGC

Liu

Wang

Chen

et al. 2020

IET Generation Trans & Dist

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With the real‐time changes of wind speed and operating conditions, it is a challenge to fully tap the active power regulation ability and improve the control performance of automatic generation control (AGC) in a wind farm (WF). The essence of tapping the active power regulation ability is to realise the coordination and complementarity of each wind turbine's (WT's) dynamic adjustment performance (DAP). To address this, a novel data mining method is developed to derive the internal relations between WTs’ output power and pitch angle, impeller speed and pitch angle during the power adjustment process, and a unified mechanism model is established to describe DAP of WTs. Based on the discovered relationship between WTs’ DAP and its operating states, an active power distribution algorithm and a dynamic interval control method are proposed. Then, an active power dynamic interval control strategy that has been implemented using Java script in MyEclipse for WFs is further developed. The control strategy has been tested and applied in a 50 MW WF in northwest China. The preliminary results showed that the control strategy has improved the rapidity and accuracy of AGC in the WF.

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Section: Introductionmentioning

confidence: 99%

Active power dynamic interval control based on operation data mining for wind farms to improve regulation performance in AGC

Liu

Wang

Chen

et al. 2020

IET Generation Trans & Dist

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“…frequency, the energy into the grid must match the energy out of the grid [23] If they are not matched then the frequency will slowly start to rise or fall. Modern grid level generators are equipped with sensors to detect these frequency shifts and can generally adjust power output minutely over the course of a few seconds to maintain this balance.…”

Section: Figure 12mentioning

confidence: 99%

Microemulsion electrolytes for electrochemical energy storage devices

Hughson

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The demand for electrical energy storage technology is growing at a rapid pace. The current market leader is the lithium ion battery which has found use in many applications from stationary, grid level storage to transportation and smaller applications like mobile phones.Supercapacitors are an up-and-coming alternative energy storage technology that compliments lithium ion batteries in many ways. Where lithium ion batteries have a high energy density, delivering energy for a long time, supercapacitors have a high power density which means they are capable of being charged and discharged within seconds.Both of these technologies rely on organic electrolytes that are toxic and flammable. Replacing these organic electrolytes with alternatives would go a long way to improving their sustainability and lessening the environmental impact. Using a water based electrolyte is an attractive option however water is limited by its electrochemical window. Above a voltage of 1.23 V it is thermodynamically favourable for water to be split into hydrogen and oxygen gasses. This voltage restriction limits the energy density of water based batteries and supercapacitors making them economically non-viable. The research in this thesis was investigating the use of microemulsions as an alternative class of electrolytes in ion batteries and supercapacitors. Microemulsions are a thermodynamically stable mixture of two immiscible phases. Despite being mostly made up of water, microemulsions can have a greatly extended electrochemical window, as much as 5 V. This means that they could have all of the benefits of aqueous and organic electrolytes in one solvent. Microemsulions have never been applied to supercapacitors or ion batteries before. They were found to retain their enhanced electrochemical stability and still allow for the devices to perform. In almost all aspects the devices presented within out-perform any other water based electrolyte in the literature and in many cases show comparable performance to organic electrolytes.

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Implementing Demand Response in The Residential Energy System to Solve Duck Curve Problem

Rahman

Mohammad

2020

2020 2nd International Conference on Advanced Information and Communication Technology (ICAICT)

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Review on Frequency Adjustment for Power Systems with Grid Connected Wind Farm

Cited by 14 publications

References 18 publications

Active power dynamic interval control based on operation data mining for wind farms to improve regulation performance in AGC

Active power dynamic interval control based on operation data mining for wind farms to improve regulation performance in AGC

Microemulsion electrolytes for electrochemical energy storage devices

Implementing Demand Response in The Residential Energy System to Solve Duck Curve Problem

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