Power Quality: Overview and monitoring

Putrus, Ghanim; Wijayakulasooriya, J. V.; Minns, Peter

doi:10.1109/iciinfs.2007.4579238

Cited by 12 publications

(6 citation statements)

References 15 publications

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“…In this case, the local storage can absorb active and reactive power in order to mitigate frequency variation and voltage swell. Conversely, the ESS operation can mitigate the voltage sag caused by the connection of a large load [50]. End-users can be protected against poor power quality, depending on the nature and magnitude of the grid disorder, by utilising the energy capability combined with non-unity power factor operation of the storage [2].…”

Section: Service Reliability -Uninterruptible Power Supplymentioning

confidence: 99%

Aggregated applications and benefits of energy storage systems with application-specific control methods: A review

Katsanevakis

Stewart

2017

Renewable and Sustainable Energy Reviews

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Distributed energy storage systems (ESSs) are becoming essential components for the operation of the increasingly complex electricity grid, where dispersed generation is causing powerflows occurring both top-down and bottom-up. Specifically, the combination of ESSs coupled with application-specific control methods can achieve the interdependent objectives of system stakeholders such as the system operator, electrical utilities, retailers, equipment vendors, the government and the electricity customers. The necessity for an accelerated rate of transition to a multi-directional grid arrangement has been exacerbated by the rapid proliferation of distributed renewable energy sources (RESs) that are now price comparable to traditional supply sources. While there are review articles covering ESS technologies and applications as well as the plethora of future advanced grid arrangements that may eventuate, there is none which comprehensively covers individual and aggregated ESS applications and the corresponding benefits, comparing different technology selection methods and providing application-specific controls. Both operational and monetary benefits are identified and critically reviewed from the perspective of the aforementioned stakeholders. Wholesale and retail energy market regimes are also considered for monetisation of the benefits. The control methods that are provided cover both balanced and unbalanced grid conditions. This comprehensive review paper will be of immense value to researchers and practitioners seeking to understand and unpack the aggregated benefits of ESS in the electricity grid.

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Section: Service Reliability -Uninterruptible Power Supplymentioning

confidence: 99%

Aggregated applications and benefits of energy storage systems with application-specific control methods: A review

Katsanevakis

Stewart

2017

Renewable and Sustainable Energy Reviews

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“…For the energy consumption computing through numerical integration, the Generalized Newton's rules (1,2,3) and Newton-Cotes classic rules (4,6,8) have been used [12].…”

Section: ▀▀ ▀▀mentioning

confidence: 99%

“…Power quality monitoring instruments can vary from a simple true RMS. Meter, to advanced techniques that are capable of automatically capturing and classifying power quality events [1].…”

Section: Introductionmentioning

confidence: 99%

Electric substation ancillary services power consumption analysis. Case study: Timisoara 400/220/110 kV substation

Bărbulescu

Kilyeni

Jigoria-Oprea

et al. 2010

Proceedings of 14th International Conference on Harmonics and Quality of Power - ICHQP 2010

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Within the paper, the authors deal with electric substation ancillary services power consumption analysis. They are focusing on load curve numerical processing. A real case study is discussed, Timisoara 400/220/110 kV substation, the consumers being supplied from the autotransformer tertiary winding. The parameters specific to ancillary services load curves are computed using a software tool developed in Matlab, based on the monitored results. Several additional issues are tackled: numerical approximation of load curve, consumed energy computing through numerical integration and load curve forecasting. To achieve this goal, a software tool in Delphi environment has been developed. The results are discussed and the appropriate conclusions are highlighted.

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“…Feeding renewable energy into the power system is mainly implemented in the distribution grid, and the conversion system plays a significant role, which can lead to the reduction of inertia of power system with the expending of the renewable feed-in-power [5]- [7]. Due to the inherent quick switching characteristic and non-linear nature of electronicbased controllers, these power electronic semiconductors in the conversion system have brought challenges to the stable operation of the power grid [3]- [5]. On the one hand, the volatility of renewable energy could cause system-wide instability; on the other hand, the non-linear characteristic of the semiconductor elements often leads to power quality problems and various interactions of different application areas [7]- [8].…”

Section: Introductionmentioning

confidence: 99%

Research on Performance of Real-Time Simulation Based on Inverter-Dominated Power Grid

et al. 2021

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This paper proposes two methods to improve the performance in real-time simulation. The increased inverter-based generations are gradually shifting the operation of the power grid. Consequently, the investigation for the safe operation and further application is essential in the inverter-dominated power grid. As the simulated number of non-linear switch elements like inverter increases, the numerical complexity of the simulation model rises exponentially. Accordingly, the scale of the simulated power grid with inverters is normally constricted by taking account of the burdensome numerical calculation. The emerging of realtime simulator provides the opportunity to enable the simulation of the large-scale power grids. Nevertheless, the simulation boundary condition is still exceeded in the inverter-dominated model. Hence, the improvement of the performance to extend the limitation in real-time simulation is constituted in this paper. The first method proposed is co-simulation. This approach is to simulate the power grid and inverters by models in different deep levels. The phasor model and electrical-mechanical-transient model are utilized to develop the co-simulation model. The second method is network reduction. Based on the dynamic feature of the inverter, it is reduced to an equivalent current source, which decreases the complexity of the model and retains its characteristics. The evaluation of the methods is demonstrated by two indexes: real-time capability and the similarity degree. INDEX TERMS real-time simulation, inverter-dominated power grid, co-simulation, network reduction

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Power Quality: Overview and monitoring

Cited by 12 publications

References 15 publications

Aggregated applications and benefits of energy storage systems with application-specific control methods: A review

Aggregated applications and benefits of energy storage systems with application-specific control methods: A review

Electric substation ancillary services power consumption analysis. Case study: Timisoara 400/220/110 kV substation

Research on Performance of Real-Time Simulation Based on Inverter-Dominated Power Grid

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