Non‐synchronous generation impact on power systems coherency

International Journal of Electrical Power & Energy Systems

Riano

Gerndt

et al. 2019

Self Cite

The transformation of the traditional transmission power systems due to the current rise of non-synchronous generation on it presents new engineering challenges. One of the challenges is the degradation of the inertial response due to the large penetration of high power converters used for the interconnection of renewables energy sources. The addition of a supplementary synthetic inertia control loop can contribute to the improvement of the inertial response. This paper proposes the application of a novel Fuzzy Adaptive Differential Evolution (FADE) algorithm for the tuning of a fuzzy controller for the improvement of the synthetic inertia control in power systems. The method is validated with two test power systems: (i) an aggregated power system and its purpose is to understand the controller-system behavior, and (ii) a two-area test power system where one of the synchronous machine has been replaced by a a full aggregated model of a Wind Turbine Generator (WTG), whereby different limits in the tuning process can be analyzed. Results demonstrate the evolution of the membership functions and the inertial response enhancement in the respective test cases. Moreover, the appropriate tuning of the controller shows that it is possible to substantially reduce the instantaneous frequency deviation.

Section: Non-synchronous Generation and Synthetic Inertiamentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Synthetic inertia control based on fuzzy adaptive differential evolution

International Journal of Electrical Power & Energy Systems

Riano

Gerndt

et al. 2019

Self Cite

“…Low-inertia operated systems, and potential improvements have been studied by several authors. Similarly, representative dynamic measurements have been identified by the gradual integration of non-synchronous generation as well as novel methods have been studied to counteract the inertia reduction and its dynamic impact [22].…”

Section: Wind Power Impact On Measurementsmentioning

confidence: 99%

Dynamic Measurements of the Wind Power Impact on Power System Inertia and Stability

2018 IEEE Innovative Smart Grid Technologies - Asia (ISGT Asia)

González-Longatt

Sood³

2018

The integration of wind power generation (WPG) have many different impacts on the current power transmission and distribution systems. Most of them are related to their effect on the dynamic behaviour and frequency deviation during system frequency disturbances affecting the system inertia response. Different approaches have been presented to show the dynamic behaviour diminution, and several metrics have been proposed to quantify the impact of the inertia reduction. This scientific paper looks at the background system inertia problem, presenting some of the most significant contributions in observation of power system dynamic under high penetrations of WPG and presents two dynamic measurements. First one measures the damping ratio of the power lines quantifying it in an online fashion. The second one measures the frequency of an electrical power signal. The dynamic measurements are tested in a hypothetical active power signal with the inclusion of wind energy showing the affectivity of the dynamic measurements presented and the impact of wind farms in power systems. Finally, future work and conclusions are given.

“…where, x i is the synthetic inertia regulator and P ord i is the ordinary power supplied by the non-synchronous generation [18]. Hence, resulting in the following dynamics of the system frequency: Fig.…”

Section: B Non-synchronous Generation and Synthetic Inertiamentioning

confidence: 99%

Distributed synthetic inertia control in power systems

2017 International Conference on ENERGY and ENVIRONMENT (CIEM)

Sanchez

Øverjordet³

et al. 2017

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Due to the increasing use of renewables into the grid connected through power converters, the rotational inertia in power systems has been reducing. Consequently the frequency response requires the activation of the so-called synthetic inertia control. The synthetic inertia control aims to inject an extra power component when the system experiences a frequency disturbance event. In this paper, it is proposed that a distributed dynamic controllers for sharing the synthetic inertia control actions between the various active power converters in the grid for the improvement of the frequency response. It is assumed that a communication structure between the synthetic inertia controllers and the local power converters is involved in the system. The convergence of the control system is reached through a game population theory and the primary frequency control has been improved. The results are validated based on simulation of a two-area test system.