Hierarchical Distributed Voltage Optimization Method for HV and MV Distribution Networks

Chai, Yuanyuan; Guo, Li; Wang, Chengshan; Liu, Yixin; Zhao, Zongzheng

doi:10.1109/tsg.2019.2928701

Cited by 49 publications

(14 citation statements)

References 32 publications

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“…Several national standards and grid codes [11,12] predict operation of PV systems with power factor below unity. Most of the contributions consider usage of PV systems' inverters as ancillary service providers [2][3][4][11][12][13][14][15] but some of them analyzed the influence of reactive power compensation on power system losses. In general, compensation of inductive reactive power with high share proliferation of PV systems is considered.…”

Section: Introductionmentioning

confidence: 99%

Reactive Power Compensation with PV Inverters for System Loss Reduction

Vlahinić

Franković

Komen³

et al. 2019

Energies

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Photovoltaic (PV) system inverters usually operate at unitary power factor, injecting only active power into the system. Recently, many studies have been done analyzing potential benefits of reactive power provisioning, such as voltage regulation, congestion mitigation and loss reduction. This article analyzes possibilities for loss reduction in a typical medium voltage distribution system. Losses in the system are compared to the losses in the PV inverters. Different load conditions and PV penetration levels are considered and for each scenario various active power generation by PV inverters are taken into account, together with allowable levels of reactive power provisioning. As far as loss reduction is considered, there is very small number of PV inverters operating conditions for which positive energy balance exists. For low and medium load levels, there is no practical possibility for loss reduction. For high loading levels and higher PV penetration specific reactive savings, due to reactive power provisioning, increase and become bigger than additional losses in PV inverters, but for a very limited range of power factors.

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Section: Introductionmentioning

confidence: 99%

Reactive Power Compensation with PV Inverters for System Loss Reduction

Vlahinić

Franković

Komen³

et al. 2019

Energies

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“…The large-scale deployment of new electricity demand, such as electrified heat and transport, will significantly increase the peak demand of distribution networks [1]- [3]. The increasing connection of low-carbon distributed generators, such as photovoltaic (PV) panels and wind turbines, may incur violations of voltage and thermal limits of distribution networks [4]. Moreover, there are great uncertainties in local power generation and consumption, and traditional regulation methods, such as on-load tap changers of transformers, cannot satisfy the requirements for real-time continuous regulation [5].…”

Section: Introductionmentioning

confidence: 99%

An Overview of Soft Open Points in Electricity Distribution Networks

Jiang

Zhou

Ming

et al. 2022

IEEE Trans. Smart Grid

108

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“…To overcome the shortcomings in centralized methods, some researchers have proposed decentralized voltage control methods [16][17][18]. By parting a distribution network into serval subnetworks, the edge computing devices with data storage, analysis, and communication capabilities are equipped in each subnetwork to realize distributed and localized voltage control.…”

Section: Introductionmentioning

confidence: 99%

Decomposition-Coordination-Based Voltage Control for High Photovoltaic-Penetrated Distribution Networks under Cloud-Edge Collaborative Architecture

Han

2022

International Transactions on Electrical Energy Systems

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With the integration of high proportional photovoltaics (PVs) into distribution networks, the superposition of uncertain output power of PVs and stochastic load demand fluctuations have posed a serious challenge to voltage stability. In this paper, a multitimescale decomposition-coordination-based voltage control method is proposed under the cloud-edge cooperative architecture. The distribution network is firstly decomposed into several subnetworks. In each subnetwork, the edge computing device is equipped to realize the distributed control and provide external computing resources for the cloud center. Then, a multitimescale control scheme containing the interval dispatch stage and the real-time time-window stage is proposed. In the interval dispatch stage, a cloud-edge collaborative calculation strategy considering balanced resource allocation is well designed to obtain the global optimal power flows and the corresponding reference operating points of the voltage control equipment. Meanwhile, in the real-time time-window stage, a consensus-based voltage correction mechanism under the optimal power flow boundary constraints is designed to avoid the voltage violations caused by unexcepted power fluctuations deviating from the representative scenarios. Simulation results with the improved 33-bus and IEEE 123-bus systems have demonstrated the effectiveness of our proposed method.

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Hierarchical Distributed Voltage Optimization Method for HV and MV Distribution Networks

Cited by 49 publications

References 32 publications

Reactive Power Compensation with PV Inverters for System Loss Reduction

Reactive Power Compensation with PV Inverters for System Loss Reduction

An Overview of Soft Open Points in Electricity Distribution Networks

Decomposition-Coordination-Based Voltage Control for High Photovoltaic-Penetrated Distribution Networks under Cloud-Edge Collaborative Architecture

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