Power quality issues related to power flow control in systems with renewable energy micro sources

Morávek, Jan; Drápela, Jiří; Wasserbauer, Vojtech; Mastny, Petr

doi:10.1109/epe.2016.7521784

Cited by 16 publications

(3 citation statements)

References 6 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…It can be deduced that with an increasing number of such customers, the standard (consuming only) customers will be billed for the DS operation costs unfairly, as shown in previous studies [3], [16]. Furthermore, the balancing prosumers may contribute to voltage disturbances (typically voltage harmonics, fluctuation [17], and imbalance). Thus, the losses might even be amplified because of their negative effects on other appliances and elements in DSs [18]- [20].…”

Section: Introductionmentioning

confidence: 87%

Revenue Metering of Unbalanced Prosumers in Energy Communities

Klusáček

Drápela

Langella

2023

IEEE Open J. Power Energy

View full text Add to dashboard Cite

The presence of power generating plants owned by prosumers may lead to unbalanced bidirectional energy flows at the points of connection to the relevant distribution systems. This will impact future energy communities, where appropriate metering within the community is a crucial issue for billing purposes. This paper shows that the current metrics for active energy measurement and the registration of three-phase revenue meters may fail to fairly charge unbalanced prosumers for their use of the distribution system as an inherent phase-to-phase balancer. On the other hand, it is proven here that adopting metrics based on positive sequence power/energy measurement would lead to more fair billing within the community. A comparative study was performed using a simplified but realistic model of a distribution system feeding two prosumers (i.e., an archetype of an energy community). First, representative case studies were considered. Then, a more realistic simulation of a single day of operation was conducted. The main contribution of the paper is a detailed and systematic comparison of the methods used for measuring and sorting energy into registers in revenue meters to support the ongoing discussions about fair metering within future energy communities.

show abstract

Section: Introductionmentioning

confidence: 87%

Revenue Metering of Unbalanced Prosumers in Energy Communities

Klusáček

Drápela

Langella

2023

IEEE Open J. Power Energy

View full text Add to dashboard Cite

show abstract

“…The energy flow is typically intentionally diverted in the prosumers' installations behind their revenue meters (RMs) [3], [4] in a local energy community [5], or on the scale of a grid-tie microgrid [6], leading to bidirectional energy flows. Such changes in the energy flow direction may be periodic as a result of the concurring operation of a generating power plant and an energy divertor with specific hardware [7] providing full-cycle pulsewidth regulation (PWR). PWR is typically utilized for appliances controlling thermal loads (e.g., cooking appliances, air conditioners, air heaters, and water heaters).…”

Section: Introductionmentioning

confidence: 99%

Performance of Smart Revenue Meters Under Bidirectional Active Energy Flows in Energy Communities

Klusacek,

Langella,

Meyer

et al. 2024

IEEE Trans. Instrum. Meas.

Self Cite

View full text Add to dashboard Cite

Bidirectional active energy flows are expected to increase in electrical distribution systems worldwide as a result of future incentives to exchange energy within local energy communities. Distributed generation (e.g., solar rooftop photovoltaic systems) in combination with full-cycle pulse-width regulated loads (e.g., thermal appliances or some energy diverters), battery storage systems, or regenerative loads will result in periodic changes in the energy flow direction. If the regulation periods are close to the aggregation time window of smart revenue meters (RMs), the deviation from the correct readings of export and import registers might be significant, Subsequently, economic transactions that rely on readings from RMs, especially in community grids, might fail. The paper presents an overview of the active power and energy metrics that are either already being implemented in static RMs or derived from other applications of active power measurement. A parametric analysis and an experimental case-study demonstrated quantitatively that different metrics and different influencing factors/conditions can lead to large deviations in the readings of RMs in community grids, causing significant technical and financial consequences. Finally, a new testing procedure capable of verifying the susceptibility of RMs to these quickly changing bidirectional energy flows is proposed and experimentally demonstrated with the goal of including it in future updates of the relevant standards.

show abstract

“…A distortion in the voltage waveform of the power source from a sine wave, or in the amplitude from a known reference level is considered as a power quality issue [1]. Voltage fluctuations, voltage sags, voltage unbalance, transients and harmonics are the well-known issues that affect the power quality [2].…”

Section: Introductionmentioning

confidence: 99%

Sliding mode control for performance improvement of shunt active power filter

Ullah

Ashraf

2019

SN Appl. Sci.

View full text Add to dashboard Cite

The increased use of non-linear loads results in more harmonics content in the source current. Shunt active power filters are used for correction of distorted source current by injecting a compensating current in parallel to the load current. The injected current will shape the supply current to a sinusoidal. In this paper an improved performance of shunt active power filter is achieved by using sliding mode controller for generation of gate pulses of voltage source inverter. The implemented control technique has been evaluated and compared with hysteresis current control. The performance parameters used for evaluating the shunt active power filter are total harmonic distortion, power factor and harmonics compensation ratio. The simulation results show excellent performance of active power filter in terms of harmonics mitigation and dynamic response. Experimental tests are also performed using NI DAQ card in Labview environment to validate the simulation results. Both the simulation and experimental results prove good performance of sliding mode control for accurate injection of reference current.

show abstract

Power quality issues related to power flow control in systems with renewable energy micro sources

Cited by 16 publications

References 6 publications

Revenue Metering of Unbalanced Prosumers in Energy Communities

Revenue Metering of Unbalanced Prosumers in Energy Communities

Performance of Smart Revenue Meters Under Bidirectional Active Energy Flows in Energy Communities

Sliding mode control for performance improvement of shunt active power filter

Contact Info

Product

Resources

About