Coordination of Multiple Energy Storage Units in a Low-Voltage Distribution Network

Wang, Lei; Liang, Daniel; Crossland, Andrew F.; Taylor, Phil; Jones, Darren; Wade, Neal

doi:10.1109/tsg.2015.2452579

Cited by 102 publications

(61 citation statements)

References 31 publications

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“…They also bring several new challenges to power system. With the improvement of permeability of PV generation in the distribution network, the traditional distribution network becomes an active network, whose voltage bus connected PV generation is higher than other bus [1].…”

Section: Introductionmentioning

confidence: 99%

Coordinated control for voltage regulation of distribution network voltage regulation by distributed energy storage systems

Zhang

Dong

2018

Prot Control Mod Power Syst

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With more and more distributed photovoltaic (PV) plants access to the distribution system, whose structure is changing and becoming an active network. The traditional methods of voltage regulation may hardly adapt to this new situation. To address this problem, this paper presents a coordinated control method of distributed energy storage systems (DESSs) for voltage regulation in a distribution network. The influence of the voltage caused by the PV plant is analyzed in a simple distribution feeder at first. The voltage regulation areas corresponding to DESSs are divided by calculating and comparing the voltage sensitivity matrix. Then, a coordinated voltage control strategy is proposed for the DESSs. Finally, the simulation results of the IEEE 33-bus radial distribution network verify the effectiveness of the proposed coordinated control method.

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Section: Introductionmentioning

confidence: 99%

Coordinated control for voltage regulation of distribution network voltage regulation by distributed energy storage systems

Zhang

Dong

2018

Prot Control Mod Power Syst

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“…Storage located by the network operator could be built with control algorithms which are targeted towards a DNO objective of voltage control [34,35]. Street storage itself might be favourable for DNOs as it does not need to be located in customer homes.…”

Section: Discussionmentioning

confidence: 99%

Comparison of the Location and Rating of Energy Storage for Renewables Integration in Residential Low Voltage Networks with Overvoltage Constraints

Crossland¹,

Jones

Wade

et al. 2018

Energies

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Expansion of photovoltaic (PV) generation is increasing the challenge for network operators to keep voltages within operational limits. Voltage rise occurs in low voltage (LV) networks when distributed generators export, particularly at times of low demand. However, there is little work quantifying the scale of voltage issues and subsequently potential solutions across large numbers of real networks. In this paper, a method is presented to analyse a large quantity of geographically and topographically varying distribution networks. The impact of PV on voltages in 9163 real LV distribution networks is then quantified. One potential mitigation measure is increased network demand to reduce voltages. In this work, location algorithms are used to identify where increased demand, through energy storage, has the greatest effect on overvoltage. The study explores the impact on overvoltage of two modes of storage installation reflecting differing routes to adoption: purchase of storage by homeowners and purchase by network operators. These scenarios are compared with traditional re-conductoring in the 9163 networks. It is shown that to avoid violation of absolute voltage limits, storage should be installed at strategically important locations. Storage in homes reduces overvoltage, offering clear benefits to the network operator, but very wide deployment is required to completely remove the need for reinforcement.

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“…[6], [7], is gaining increased focus even in the context of large interconnected power systems thanks to their decreasing cost, longer life span and technical progression of associated technologies, see e.g [8], [9]. In the existing technical literature, BESSs have been proposed in applications to provide ancillary services to the grids, like voltage support and primary frequency regulation [10]- [13], improvement of self consumption [14], load peak shaving [15], and dispatch of aggregated stochastic renewable generation and prosumption [16]- [22].…”

Section: Introductionmentioning

confidence: 99%

Concurrent Voltage Control and Dispatch of Active Distribution Networks by Means of Smart Transformer and Storage

Gao

Sossan

Christakou

et al. 2018

IEEE Trans. Ind. Electron.

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Abstract-Dispatching active distribution networks is expected to play an important role in the smart grid technologies. Voltage control is also starting to be widely proposed to avoid voltage violations in the electrical grid. The integration of the storage in the so called smart transformer (ST), which is a solid state transformer with control and communication functionalities, can help combine both the services. The added value of such a configuration is that it allows the full decoupling of the reactive power flows between the medium voltage (MV) and low voltage (LV) networks. We show the augmented flexibility of such a configuration by proposing a control strategy where, i), the storage system is used to achieve dispatched-by-design operation of the LV network active power flow, and, ii), the two ST power converters to control the voltage in both the MV and LV grid on a best effort basis. The control strategy is validated by simulations using the IEEE 34 nodes MV test feeder and the Cigre LV reference network. Moreover, control performance is benchmarked against a conventional network setup, where the BESS is connected to the LV network through a DC/AC power converter and the ST transformer is replaced by a conventional transformer.

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Coordination of Multiple Energy Storage Units in a Low-Voltage Distribution Network

Cited by 102 publications

References 31 publications

Coordinated control for voltage regulation of distribution network voltage regulation by distributed energy storage systems

Coordinated control for voltage regulation of distribution network voltage regulation by distributed energy storage systems

Comparison of the Location and Rating of Energy Storage for Renewables Integration in Residential Low Voltage Networks with Overvoltage Constraints

Concurrent Voltage Control and Dispatch of Active Distribution Networks by Means of Smart Transformer and Storage

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