Hierarchy control of power quality for wind – battery energy storage system

Li, Kai; Xu, Huiling; Ma, Qian; Zhao, Ji

doi:10.1049/iet-pel.2013.0654

Cited by 43 publications

(30 citation statements)

References 13 publications

(24 reference statements)

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“…Points A, B, C, D, E and F are used to obtain the upper and lower boundaries of the operational area. The upper boundary of the operational area follows the path of ''A-B-C'', on which the EV is charged with the rated charging power from t is determined by (7). …”

Section: State Model Of Evmentioning

confidence: 99%

“…Another method to tackle this problem is through the utilization of energy storage system (ESS), such as batteries, flywheels, etc., to respond to the power fluctuations [5,6]. The ESS was used to improve the voltage profile which was affected by the stochastic outputs of the DGs [7,8]. The ESS was investigated for peak load shaving of the tie-line in [9,10].…”

Section: Introductionmentioning

confidence: 99%

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Load curve smoothing strategy based on unified state model of different demand side resources

Wang

Jiang

Jia

et al. 2018

J. Mod. Power Syst. Clean Energy

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Renewable energy based distributed generation (DG) has the potential to reach high penetration levels in the residential region. However, its integration at the demand side will cause rapid power fluctuations of the tieline in the residential region. The traditional generators are generally difficult to manage rapid power fluctuations due to their insufficient efficiency requirements and low responding speed. With an effective control strategy, the demand side resources (DSRs) including DGs, electric vehicles and thermostatically-controlled loads at the demand side, are able to serve as the energy storage system to smooth the load fluctuations. However, it is a challenge to properly model different types of DSRs. To solve this problem, a unified state model is first developed to describe the characteristics of different DSRs. Then a load curve smoothing strategy is proposed to offset the load fluctuations of the tie-line of the residential region, where a control matrix deduced from the unified state model is introduced to manage the power outputs of different DSRs, considering the response order and the comfort levels. Finally, a residential region with households is used to validate the load curve smoothing strategy based on the unified state model, and the results show that the power fluctuation rate of the tie-line is significantly decreased. Meanwhile, comparative study results are shown to demonstrate the advantages of the unified state model based load curve smoothing strategy.

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Section: State Model Of Evmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Load curve smoothing strategy based on unified state model of different demand side resources

Wang

Jiang

Jia

et al. 2018

J. Mod. Power Syst. Clean Energy

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show abstract

“…Consequently, the control approaches for VSI have been initially introduced to drive the ES systems [4,5]. Subsequently, the control approaches for power converters [6,7] and microgrids [8,9] have been adopted. With the increasing power generation from RESs [10], the ESs have gained an increasing interest and many papers have appeared, reporting on system modeling [11], reactive power compensation [2], power decoupling [12,13], voltage and frequency control [14], power balance control for a three-phase system [15], and so on.…”

Section: Introductionmentioning

confidence: 99%

Dead-Beat Control Cooperating with State Observer for Single-Phase Electric Springs

et al. 2018

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Aiming at improving the performance of the existing for single-phase electric springs (ESs), such as the fastness of the voltage stabilization and the mitigation of the voltage harmonics across the critical loads (CLs), the dead-beat control cooperating with state observer is proposed in this paper. First, the δ control is reviewed, outlining its features of regulation of the CL voltage while keeping the ES operation stable. After describing the operation of an ES in the continuous-time domain by the state-space technique, its discrete-time model is formulated using the zero-order-hold (ZOH) algorithm. Then, the control system for an ES is designed around the dead-beat control cooperating with a state observer and implementing the two typical compensation functions achievable with the δ control, namely the pure reactive power compensation and the power factor correction. Results obtained by simulation demonstrate that the control system is able to both properly drive an ES and to implement the two functions. The results also show that the proposed control system has the advantage of eliminating harmonic components in CL voltage when grid voltage distorts.

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“…In the past few years, renewable energy generation is increasing developed, especially the photovoltaic power generation and wind power generation [1]. Three phase voltage source inverter (VSI) is an important equipment for renewable energy sources connecting to utility grid.…”

Section: Introductionmentioning

confidence: 99%

Elimination of zero sequence circulating current between parallel operating three-level inverters

Wang

Dong

et al. 2016

IECON 2016 - 42nd Annual Conference of the IEEE Industrial Electronics Society

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Abstract-In order to suppress the zero sequence circulating currents (ZSCCs) between parallel operating three level voltage source inverters with common AC and DC buses, a common mode voltage reduction PWM (CMVR-PWM) technique and neural point potentials (NPPs) control based method is proposed in this paper. An equivalent model of ZSCC is developed, and two excitation sources of ZSCC, differences of common mode voltages (CMVs) and NPPs between paralleled inverters, are analyzed. A CMVR-PWM method is investigated to reduce the CMV, and a simple electric circuit is adopted to control the NPPs. With this two strategies, ZSCCs between parallel inverters can be eliminated effectively. This strategy has the advantage of without carrier synchronization and can be utilized to parallel operating inverters with different types of filter. Simulation result validate the proposed ZSCC elimination schemes.

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Hierarchy control of power quality for wind – battery energy storage system

Cited by 43 publications

References 13 publications

Load curve smoothing strategy based on unified state model of different demand side resources

Load curve smoothing strategy based on unified state model of different demand side resources

Dead-Beat Control Cooperating with State Observer for Single-Phase Electric Springs

Elimination of zero sequence circulating current between parallel operating three-level inverters

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