Voltage prevention and emergency coordinated control strategy for photovoltaic power plants considering reactive power allocation

Wang, Qi; Chen, Lianger; Hu, Minqiang; Tang, Xiaobo; Li, Tianran; Ji, Shunxiang

doi:10.1016/j.epsr.2018.06.003

Cited by 17 publications

(11 citation statements)

References 14 publications

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“… Test 3: Fixed irradiance commanding constant active power pump to grid, Volt-VAR operation Here the irradiance is kept fixed at 500 W m 2 ⁄ . During the time period, 0 < t < 1 and 3 < t < 5 when the grid voltage (in per unit) is between U 1 and U 2 values of characteristic curve of figure 5, the inverter operates at unity power factor with zero reactive power [25]. During the time period, 1 < t < 2, when the gird voltage is below U low (refer characteristic curve), reactive capacitive power injected into the grid (positive value set).…”

Section: Three-phase Grid-linked Inverter Controller Systemmentioning

confidence: 99%

Modelling of Large-scale Grid-connected PV System with Reactive Power Control Methods

Oum

Zhang

2022

J. Phys.: Conf. Ser.

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This paper describes detailed scrutiny of the main components contained in the system. There is a DC-DC converter that extracts the maximum amount from the photovoltaic generator. The interface inverter was developed to transfer energy from the PV module into the grid with constant common dc voltage. A 90MW PV system with a 3-phased framework linked is planned and reviewed. This system is a high-fidelity exemplary with power control in the inverters, DC-DC converters, DC-AC inverters, and three-phase service grids used as components designed and formed mathematically as a reproduction model. The model contains various components such as the boost converter, the PV control modes, the inverter, and the framework utility. The essence of the reactive power generation in the PV inverter is represented. The components are modelled physically to generate high-fidelity simulation. Active and reactive power measurements are accurately taken and analysed. The study of the PQ controller is presented in the framework connection control of the system. The simulation results obtained in the modelling process show an effective power-controlled model.

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Section: Three-phase Grid-linked Inverter Controller Systemmentioning

confidence: 99%

Modelling of Large-scale Grid-connected PV System with Reactive Power Control Methods

Oum

Zhang

2022

J. Phys.: Conf. Ser.

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“…Because the VDAPF is capable of reactive power compensation in addition to harmonic mitigation, the dominant nodes determined based on the harmonic index from ( 9) and the integrated sensitivity index from (10) are used as the candidate nodes for VDAPFs, as shown in (11). The dominant nodes determined based on the reactive power index from ( 12) are used as the candidates for SVGs.…”

Section: Selection Of Dominant Nodes As Candidatesmentioning

confidence: 99%

“…There are much Var equipment for voltage problem, including on-load tap changers, shunt capacitors, static var compensators and static var generators (SVGs). Among them, SVG has great characteristics of outputting capacitive or inductive reactive power smoothly and reacting to instructions rapidly, so it is widely used [9,10]. The harmonic level of the network can be controlled by installing filters directly on the customer side in the traditional DNs where harmonic disturbance sources are fewer and generally concentrated in some special customers IET Gener.…”

Section: Introductionmentioning

confidence: 99%

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Two‐layer model of siting and sizing for active power filters and static var generators considering reactive power capability and active power curtailment of DGs

Tian

Jia

Xue

et al. 2022

IET Generation Trans & Dist

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To solve the voltage harmonics and voltage deviation caused by highly penetrated distributed generations (DGs) and power electronic equipment in distribution networks, a two‐layer model of the allocation for the voltage detection active power filters (VDAPFs) and static var generators (SVGs) considering reactive power capability and active power curtailment of DG based on the distribution network partition is proposed in this study. First, the network partition based on the defined integrated voltage sensitivity is presented. Dominant nodes that are candidates of VDAPFs and SVGs are obtained based on the single and integrated sensitivity in all regions. Second, the voltage deviation mitigation regions of the DG grid‐connected inverters (GCINs) are determined considering the coupling between different GCINs. A curtailment method for DGs active power in and inter regions is proposed. On this basis, a two‐layer allocation model is designed. The siting and sizing of VDAPF and SVG are obtained in the upper layer by minimizing the total annual cost. In the lower layer, the power quality level is optimized in each operation scenario by the allocations provided in the upper layer. Finally, case studies on the IEEE 33‐bus and PG&E 69‐bus systems demonstrate that the proposed strategy is feasible and effective.

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“…[1][2][3][4] The return on investment of PV systems has increased as a consequence of the PV panels and their associated components price reduction. 5,6 New PV technologies have emerged regarding materials like multi-crystalline…”

mentioning

confidence: 99%

Modeling and design of a photovoltaic‐fed single‐ended primary‐inductor converter for maximum power point tracking with current mode control

Rais,

Mandal,

Zakriti

et al. 2023

Circuit Theory & Apps

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SummaryIn this work, the control of a Single‐Ended Primary‐Inductor Converter (SEPIC) supplied from a photovoltaic energy source and linked at its output to a DC current sink is addressed. The system is used for maximum power point tracking under varying environmental conditions. A strategy based on two loops of control is considered. A peak current mode controller is used for the inner loop, and a Proportional‐Integral (PI) controller is used for the outer voltage loop. Then, a comprehensive time‐domain and frequency‐domain modeling of the inner loop is theoretically addressed and then verified by the switched model of the system implemented in PSIM© software. The obtained results show that the system exhibits accurate tracking of the desired PV voltage while guaranteeing a fast maximum power point tracking under sudden changes in the environmental conditions. The mathematical modeling, design procedures, and the numerical simulations are validated using experimental results obtained from a laboratory prototype.

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Voltage prevention and emergency coordinated control strategy for photovoltaic power plants considering reactive power allocation

Cited by 17 publications

References 14 publications

Modelling of Large-scale Grid-connected PV System with Reactive Power Control Methods

Modelling of Large-scale Grid-connected PV System with Reactive Power Control Methods

Two‐layer model of siting and sizing for active power filters and static var generators considering reactive power capability and active power curtailment of DGs

Modeling and design of a photovoltaic‐fed single‐ended primary‐inductor converter for maximum power point tracking with current mode control

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