Energy Management of Hybrid Three-Phase Photoelectric System with Storage Battery to Meet the Needs of Local Object

Shavolkin, Olexander; Shvedchykova, Iryna; Demishonkov, Yaroslav

doi:10.1109/mees52427.2021.9598482

Cited by 2 publications

(4 citation statements)

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“…The middle pin (n) of the VSI link DC was connected to the neutral connection point of the DG. This allowed ensuring the equalization of power consumption from the grid by phases under unbalanced load LO [9][10][11]. This also made it possible to control the active power P g in the PCC.…”

Section: The Results Of the Research On The Use Of Pvs With Sb To Inc...mentioning

confidence: 99%

“…With a power consumption of LO in excess of 10 kW, it is advisable to use three-phase multifunctional inverters while maintaining a power factor close to 1 at the point of common coupling (PCC) to the grid [5][6][7][8][9][10][11][12]. This allows to unload the grid from reactive power and ensures the symmetry of loading the phases of the grid at an unbalanced load [9][10][11][12]. A previous study [13] presented a three-phase PVS with an SB with four converters with a common link of direct current (DC).…”

Section: Literature Review and Problem Statementmentioning

confidence: 99%

“…The "multiconverter" provided a given active power with the proper quality of electricity, PV operation with tracking the maximum power point (MPPT), and extended battery life with hybrid storage. In [10,11], the structure of the control system of a multifunctional inverter of a PVS with an SB with voltage stabilization in the DC link with three VCs was considered. The VC controls the currents of the SB and PV, as well as current in the PCC.…”

Section: Literature Review and Problem Statementmentioning

confidence: 99%

“…Limitation unit LU2 has a lower I 1 gm ≥ 0, top I 1 gmLIM limits. Unit (RCU + CCL) provides i g in PCC taking into account the phase currents of the inverter i Ca,b,c, and load i La,b,c [10,11]. The control of switches in the structure and the formation of current references are carried out by the PCU.…”

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confidence: 99%

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Use of Hybrid Photovoltaic Systems with a Storage Battery for the Remote Objects of Railway Transport Infrastructure

et al. 2022

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The use of a grid-tied photovoltaic system with a storage battery to increase the power of objects of railway transport infrastructure above the limit on consumption from the grid with the possibility of energy saving is considered. The methods of analysis of energy processes in photovoltaic systems with a storage battery are used. They are added via the processing of archival data of power generation of a photovoltaic battery and computer modeling results. A technique of system parameter calculation to increase the power according to the given load schedule of the object at constant and maximum possible degree of power increasing is developed. The values of the average monthly generation of a photovoltaic battery at the location point of the object based on archival data are used. The principle of the control of power, consumed from the grid, according to the given values of the added and total load is developed. Using the basic schedule of added load power in connection with the graph of photovoltaic battery generation allows reducing the installed power of the storage battery. The additional reduction in the installed power of the photovoltaic and storage batteries is possible at the corresponding choice of the degree of power load increasing. The joint formation of current schedules with reference to the added power value and state of charge of the battery according to the short-term forecast of the generation of a photovoltaic battery is proposed. The value of added power at certain intervals of time is set according to the graph of actual generation of the photovoltaic battery, which contributes to the maximum use of its energy. With the average monthly generation of a photovoltaic battery in the spring–autumn period, the discharge of the battery during the hours of the morning load peak is not used. This reduces the number of deep discharge cycles and extends the battery life. The description of energy processes in steady-state conditions for the daily cycle of system functioning is formalized. On this basis, a mathematical model is developed in MATLAB with an estimation of the costs of electricity consumed from the grid. When modeling, archival data are used for days when the generation of a photovoltaic battery over time intervals is close to average monthly values. This makes it possible to evaluate the effectiveness of system management under conditions close to real during the year.

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Section: The Results Of the Research On The Use Of Pvs With Sb To Inc...mentioning

confidence: 99%