Using Electromagnetic Continuously Variable Transmission in Gas Reciprocating Power Plant to Ensure Dynamic Stability

Zhidkov, Alexey

doi:10.1109/icieam48468.2020.9111923

Cited by 4 publications

(1 citation statement)

References 10 publications

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“…Therefore, to be integrated in a microgrid, either a mechanical reduction gear must be used to decouple the gas-turbine shaft and the generator shaft, or the generator outputs need to be equipped with an inverter. Feasibility studies show the latter to be a more effective solution [8][9][10].…”

Section: Introductionmentioning

confidence: 99%

An approach to arranging primary and secondary control of the operating parameters in microgrids featuring inverter-connected generator sets

Ilyushin

Suslov

Kulikov

2022

J. Phys.: Conf. Ser.

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Various low-power generator sets (GS) are mainly integrated into microgrids by means of inverters coupled with energy storage systems (ESS). ESSs are connected either to the DC busbars of GSs or to the AC busbars of the microgrid, in this case they are equipped with individual inverters. Use of ESS helps balance power in cases of load surge / loadshedding when the microgrid is islanded. This paper overviews approaches to arranging primary and secondary control of the operating parameters of microgrids. It discusses the technical challenges of, and possible solutions for, implementing primary and secondary control in low- and medium-voltage distribution grids featuring inverter-connected GSs. Calculations of electromechanical transients show that inverter-connected GSs have advantages over conventional GSs when used microgrids that are weakly connected to the power system (the external grid) or islanded. In a microgrid featuring inverter-connected GSs, active and reactive power need to be controlled separately as in power systems featuring conventional GSs; implementation of such controls must be adjusted for the parametric and topological characteristics of low- and medium-voltage distribution grids. To address the issues of linked control, this paper proposes a comprehensive approach that adjusts microgrid design for the specifics of inverter-connected GSs, improves inductance, and incorporates algorithmic solutions. It details upon the virtual impedance algorithm, which extends the common principle of droop speed control. Its implementation helps load the GSs and the ESS with adjustments for their installed capacity; it can also simulate the mechanical constant of GS inertia. Primary control has a low margin that mainly comes from the ESS; thus, backups available to secondary control must be used to compensate for the deviations in operating parameters; this is a key challenge of secondary frequency and voltage control in microgrids. When primary and secondary voltage and frequency controls have been duly implemented in a microgrid, its GSs, the ESS, and electricity delivery to the loads within the microgrid can all operate reliably in a variety of operating situations.

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Section: Introductionmentioning

confidence: 99%

An approach to arranging primary and secondary control of the operating parameters in microgrids featuring inverter-connected generator sets

Ilyushin

Suslov

Kulikov

2022

J. Phys.: Conf. Ser.

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Modelling electromagnetic transmission for gas-piston generator in RTDS to estimate its dynamic stability

Achitaev

Zhidkov

Domyshev

et al. 2023

Rudenko International Conference “Methodological Problems in Reliability Study of Large Energy Systems” (Rses 2021)

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Intelligent Control of the Energy Storage System for Reliable Operation of Gas-Fired Reciprocating Engine Plants in Systems of Power Supply to Industrial Facilities

et al. 2022

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Gas-fired reciprocating engine plants (GREPs) are widely used in power supply systems of industrial facilities, which allows for ensuring the operation of electrical loads in case of accidents in the power system. Operating experience attests to the fact that during islanded operations, GREPs are shut down by process protections or protective relays in the event of severe disturbances. This leads to complete load shedding, which is accompanied by losses and damage to industrial facilities. Severe disturbances include the following ones: large load surges on GREPs due to one of them being switched off, the group starting of electric motors, and load shedding (more than 50%) during short circuits or disconnection of process lines. Energy storage systems (ESS) have the ability to compensate for instantaneous power imbalances to prevent GREPs from switching off. The authors of this study have developed methods for intelligent control of the ESS that allow one to solve two problems: prevention of GREPs shutdowns under short-term frequency and voltage deviations as well as preservation of the calendar and cycling lifetime of battery storage (BS) of the GREP. The first method does not require performing the calculation of adjustments of control actions for active and reactive power on the ESS online but rather determines them by the value of frequency deviations and the voltage sag configuration, which greatly simplifies the system of automatic control of the ESS. The second method, which consists in dividing the steady-state power/frequency characteristic into sections with different droops that are chosen depending on the current load of the ESS and the battery state of charge, and offsetting it according to a specified pattern, allows for preventing the premature loss of power capacity of the ESS BS.

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Using Electromagnetic Continuously Variable Transmission in Gas Reciprocating Power Plant to Ensure Dynamic Stability

Cited by 4 publications

References 10 publications

An approach to arranging primary and secondary control of the operating parameters in microgrids featuring inverter-connected generator sets

An approach to arranging primary and secondary control of the operating parameters in microgrids featuring inverter-connected generator sets

Modelling electromagnetic transmission for gas-piston generator in RTDS to estimate its dynamic stability

Intelligent Control of the Energy Storage System for Reliable Operation of Gas-Fired Reciprocating Engine Plants in Systems of Power Supply to Industrial Facilities

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