Vertical reactive power flexibility through distributed energy resources for a reactive energy management

Talavera, I.; Hanson, Jutta; Bott, Christian; Oechsle, F.

doi:10.1109/cpe.2017.7915152

Cited by 7 publications

(3 citation statements)

References 4 publications

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“…Semiconductor elements that generate mostly «white noise» are poorly suited for the usual Fourier analysis. Its low accuracy may affect the failure of semiconductor voltage sensors that are used in systems of APM, smart home, smart city, lean manufacturing, and others [15][16][17][18]. Given that above things are being developed and placed everywhere, elimination of frequency noise and its diagnosis will be a priority in near future.…”

Section: Processing Of Results and Conclusionmentioning

confidence: 99%

Analysis of power quality in presence of frequency distortions

et al. 2020

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Today, semiconductor elements are becoming more popular in power supply networks. Their presence in any objects of electrical equipment provides high performance with high operating efficiency. However, modern research shows the semiconductor element base negatively affects quality of electricity when they are used in parallel. In lowand medium-voltage networks, this is fraught with the appearance of frequency «noise», which negatively affects parameters equipment with presence of latter, as well their control system. To detect them, a special approach is necessary, since such harmonics can appear both from directly semiconductor elements and from operating mode of equipment where element base is applied. The purpose of this article identifies higher harmonic distortions generated by objects containing semiconductor elements.

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Section: Processing Of Results and Conclusionmentioning

confidence: 99%

Analysis of power quality in presence of frequency distortions

et al. 2020

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“…When the ADN has a high DG penetration [5,6], there is an increased power interaction between the transmission network and the ADN. Additionally, the DGs can inject the reactive power into the power grid via the grid-connected inverter [7][8][9]. Hence, the ADN can provide the RPAS to the transmission network and help the TSO to address its voltage issues [10,11].…”

Section: Introductionmentioning

confidence: 99%

An integrated market solution to enable active distribution network to provide reactive power ancillary service using transmission–distribution coordination

Chen

Lin

et al. 2021

IET Energy Syst Integration

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The active distribution network (ADN) can provide the reactive power ancillary service (RPAS) to improve the operations of the transmission network operations (such as voltage control and network loss reduction) as distribution generation grows. In this context, an RPAS market is required to motivate the ADN to provide the RPAS to the transmission network since the transmission system operator (TSO) and the distribution system operator (DSO) are different entities. Hence, to obtain the TSO–DSO coordination in the RPAS market, this study proposes a two‐stage market framework on the basis of the successive clearing of the energy and RPAS markets. Additionally, a distributed market‐clearing mechanism based on an alternating direction method of multipliers (ADMM) is adopted to guarantee TSO's and DSO's information privacy. Furthermore, a binary expansion (BE) method is used to linearise the non‐convex bilinear terms in the market‐clearing model. The effectiveness of the proposed RPAS market framework and distributed market‐clearing mechanism is validated using two different test systems with different system scales.

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“…When implementing synchronous frequency start with the rotor powered from the DC link of the current inverter, no additional starting power elements on the stator or rotor side are required, only the control system of the FC changes in relation to the control circuit for static modes. Therefore, along with the advantages, synchronous frequency start requires a more complex auto control system [4,5].…”

Section: Introductionmentioning

confidence: 99%

Frequency Control System for a Synchronized Asynchronous Electric Drive

2020

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Considering the problem of energy saving at industrial enterprises, attention should be paid to the fact that about 70 ... 80% of all electric motors are asynchronous, and most of them are installed in unregulated drives. Most of these electric drives are equipped with asynchronous electric motors with a squirrel-cage rotor (AM SC). Energy saving problem in such cases can be solved by using a frequency converter (FC), however, all FC models are intended for AM SCs, while until the mid-90s the most common variable AC drives were electric drives equipped by an asynchronous motor with a phase rotor (AD PR) as they provided easy speed regulation through the rotor circuit. Such drives are usually used in hoisting and transport machines (conveyors, cranes, etc.). Direct transfer of the abovementioned drives to frequency-controlled mode is quite complicated due to the fact that standard inverters are designed to work with AM SCs having no phase rotor winding, and whose short-circuiting leads to additional electromagnetic losses in comparison with AM SC. An upcoming engineering trend is the development and research of synchronized AM control systems.

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Vertical reactive power flexibility through distributed energy resources for a reactive energy management

Cited by 7 publications

References 4 publications

Analysis of power quality in presence of frequency distortions

Analysis of power quality in presence of frequency distortions

An integrated market solution to enable active distribution network to provide reactive power ancillary service using transmission–distribution coordination

Frequency Control System for a Synchronized Asynchronous Electric Drive

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