Review on Reactive Power and Voltage Optimization of Active Distribution Network with Renewable Distributed Generation and Time-Varying Loads

Li, Xingmin; Li, Hongwei; Li, Shuaibing; Jiang, Zhanjun; Ma, Xiao

doi:10.1155/2021/1196369

Cited by 10 publications

(6 citation statements)

References 40 publications

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“…According to the simplified equivalent circuit of the DSTATCOM, the currents and voltages will be presented in the Park reference frame as follows [42][43][44],…”

Section: Modelling Of Dstatcommentioning

confidence: 99%

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Performance Enhancement of an Islanded Microgrid with the Support of Electrical Vehicle and STATCOM Systems

et al. 2023

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Modern electrical power systems now require the spread of microgrids (MG), where they would be operating in either islanded mode or grid-connected mode. An inherent mismatch between loads and sources is introduced by changeable high renewable share in an islanded MG system with stochastic load demands. The system frequency is directly impacted by this mismatch, which can be alleviated by incorporating cutting-edge energy storage technologies and FACTS tools. The investigated islanded MG system components are wind farm, solar PV, Electric vehicles (EVs), loads, DSTATCOM, and diesel power generator. An aggregated EVs model is connected to the MG during uncertain periods of the generation of renewable energy (PV and wind) to support the performance of MGs. The ability to support ancillary services from the EVs is checked. DSTATCOM is used to provide voltage stability for the MG during congestion situations. The MG is studied in three scenarios: the first scenario MG without EVs and DSTATCOM, the second scenario MG without DSTATCOM, and the third scenario MG with all components. These scenarios are addressed to show the role of EVs and DSTATCOM, and the results in the third scenario are the best. The system voltage and frequency profile is the best in the last scenario and is entirely satisfactory and under the range of the IEEE standard. The obtained results show that both EVs and DSTATCOM are important units for improving the stability of modern power grids. The Matlab/Simulink program is considered for checking and validating the dynamic performance of the proposed configuration.

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“…According to the simplified equivalent circuit of the DSTATCOM, the currents and voltages will be presented in the Park reference frame as follows [42][43][44],…”

Section: Modelling Of Dstatcommentioning

confidence: 99%

“…The active and reactive currents have to be separated, then a control strategy for monitoring the desired voltage value will be demonstrated. According to the simplified equivalent circuit of the DSTATCOM, the currents and voltages will be presented in the Park reference frame as follows [42][43][44],…”

Section: Modelling Of Dstatcommentioning

confidence: 99%

Performance Enhancement of an Islanded Microgrid with the Support of Electrical Vehicle and STATCOM Systems

et al. 2023

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“…The DC microgrid structure that is under investigation in this paper is shown in Figure 1. As can be seen, the system mainly contains PV generation units, an ESU, load units (including critical load and uncritical load [16,17]), and interface circuits. When the system operates in isolation environments, all the loads must be appropriately distributed to ensure that the bus voltage is smooth for the DC microgrid.…”

Section: Structure Of DC Microgrid and Hierarchical Control Scheme Of...mentioning

confidence: 99%

Coordinated Control of Distributed Energy Storage Systems for DC Microgrids Coupling Photovoltaics and Batteries

Zhang¹,

Song²,

Ru³

et al. 2023

Energies

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To adapt to frequent charge and discharge and improve the accuracy in the DC microgrid with independent photovoltaics and distributed energy storage systems, an energy-coordinated control strategy based on increased droop control is proposed in this paper. The overall power supply quality of the DC microgrid is improved by optimizing the output priority of the multi-energy storage system. When photovoltaic and energy storage work simultaneously, the proposed method can dynamically adjust their working state and the energy storage unit’s droop coefficient to meet the system’s requirements. In DC microgrids with energy storage units of different capacities, the proposed strategy can be used to maintain the stability of bus voltage, improve the equalization speed and accuracy of the energy storage state of charge, and avoid the shutdown of energy storage units due to overcharge or discharge. Verification of the proposed strategy is implemented with MATLAB/Simulink. The simulation results show the proposed control strategy’s effectiveness in balancing energy supply and demand and reducing the time of charging and discharging energy storage units.

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“…Reactive supply is also a strategy, which allows power distributors to require generators to supply reactive power to the distribution network (Li et al 2021). Sources belonging to utilities or large consumers, such as dynamic reactive compensation devices, static compensators, and even capacitor banks are traditionally used when reactive power is needed.…”

Section: 𝛥𝑉 = 𝑅𝑃 + 𝑋𝑄 − 𝑄 𝑉mentioning

confidence: 99%

Voltage Regulation in Rural Networks With Distributed Generation

et al. 2023

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The increase in distributed generation (DG) interferes with the energy distribution system, which may present low voltages due to voltage drops and high voltages due to the insertion of distributed generation, resulting from renewable energy sources in rural areas. These voltage levels must be controlled to comply with the limits imposed by the distribution rules and procedures (PRODIST). This study aims to evaluate the voltage rise caused by DG, simulating three DG insertion scenarios, as well as simulate strategies to correct these voltage levels, such as the limitation of the active power supply, the reactive supply by the consumer and the utility, and the installation of on-load tap changers. The simulations were performed using the MATLAB ® program, more specifically the PSAT toolbox. Correction techniques were simulated using the active power supply limitation method, the reactive power supply method by consumers, and the voltage regulator process once the voltage rise effect was identified. The first two proved to be ineffective in this case, while the last one meets the voltage levels required by the National Electric Energy Agency.

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Review on Reactive Power and Voltage Optimization of Active Distribution Network with Renewable Distributed Generation and Time-Varying Loads

Cited by 10 publications

References 40 publications

Performance Enhancement of an Islanded Microgrid with the Support of Electrical Vehicle and STATCOM Systems

Performance Enhancement of an Islanded Microgrid with the Support of Electrical Vehicle and STATCOM Systems

Coordinated Control of Distributed Energy Storage Systems for DC Microgrids Coupling Photovoltaics and Batteries

Voltage Regulation in Rural Networks With Distributed Generation

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