Review of Efficiency Improvement Technologies of Wind Diesel Hybrid Systems for Decreasing Fuel Consumption

Sosnina, Elena; Dar’enkov, Andrey; Kurkin, A. A.; Lipuzhin, Ivan; Мамонов, А. М.

doi:10.3390/en16010184

Cited by 1 publication

(2 citation statements)

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“…The current control is configured with proportional-integral controllers with K pcc and K icc gains similar to the conventional VC-VSG. The VSG control within the considered CC-VSG structure is described according to (2)- (6) in the rotor synchronous frame with the q-axis 90 • leading the d-axis. Figure 4b depicts the power converter control time scale.…”

Section: Enhanced Cc-vsg Modelmentioning

confidence: 99%

“…The value of inertia determines the rate of change of frequency (RoCoF) and the value of its nadir or zenith, the maximum permissible values of which are strictly regulated in the grid codes of various countries [4]. The importance of the latter is associated with the provision of reliable operation of automation devices and stability of power systems, which becomes very challenging under the development of converter-dominated power systems and requires the use of novel smart and flexible technologies [5,6].…”

Section: Introductionmentioning

confidence: 99%

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An Adaptive Inertia and Damping Control Strategy Based on Enhanced Virtual Synchronous Generator Model

Suvorov,

Askarov,

Ruban

et al. 2023

Mathematics

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In modern converter-dominated power systems, total inertia is very variable and depends on the share of power generated by renewable-based converter-interfaced generation (CIG) at each specific moment. As a result, the limits required by the grid codes on the rate of change of frequency and its nadir or zenith during disturbances become challenging to achieve with conventional control approaches. Therefore, the transition to a novel control strategy of CIG with a grid-forming power converter is relevant. For this purpose, a control algorithm based on a virtual synchronous generator (VSG) is used, which simulates the properties and capabilities of a conventional synchronous generation. However, due to continuously changing operating conditions in converter-dominated power systems, the virtual inertia formed by VSG must be adaptive. At the same time, the efficiency of adaptive algorithms strongly depends on the used VSG structure. In this connection, this paper proposes an enhanced VSG structure for which the transfer function of the active power control loop was formed. With the help of it, the advantages over the conventional VSG structure were proven, which are necessary for the effective adaptive control of the VSG parameters. Then, the analysis of the impact of the VSG parameters on the dynamic response using the transient characteristics in the time domain was performed. Based on the results obtained, adaptive algorithms for independent control of the virtual inertia and the parameters of the VSG damper winding were developed. The performed mathematical modeling confirmed the reliable and effective operation of the developed adaptive control algorithms and the enhanced VSG structure. The theoretical and experimental results obtained in this paper indicate the need for simultaneous development and improvement of both adaptive control algorithms and VSG structures used for this purpose.

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Section: Enhanced Cc-vsg Modelmentioning

confidence: 99%