Voltage stability monitoring from a transmission bus PMU

Vournas, Costas; Lambrou, Charalambos; Mandoulidis, Panagiotis

doi:10.1109/ptc.2017.7981273

Cited by 10 publications

(38 citation statements)

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“…The same principle should also apply to DSOs who should receive real-time information about the condition of the transmission system, so that they best operate their assets for supporting the system in case of large disturbances. For example, the transmission of time-synchronized voltage measurements (using PMUs) from transmission system grid supply points (GSPs) to DG units would be useful in improving the support of the distribution network to the transmission system [27]. This is showcased in Section III.…”

Section: F Actors' Role Towards Realizing the Strategymentioning

confidence: 99%

Provision of Voltage Ancillary Services Through Enhanced TSO-DSO Interaction and Aggregated Distributed Energy Resources

Rousis

Tzelepis

Pipelzadeh

et al. 2021

IEEE Trans. Sustain. Energy

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The electrical energy generated from renewable energy resources connected to transmission and distribution systems and the displacement of synchronous generators continues to grow. This presages a paradigm-shift away from the traditional provision of ancillary services, essential to ensure a robust system, from transmission-connected synchronous generators towards provision from synchronous and non-synchronous generation (including distribution-connected resources). Given that the available resources at the disposal of system operators are continuously increasing, the flexibility for operating the network can be enlarged. In this context, this paper introduces a dedicated voltage ancillary services strategy for provision of reactive power. A main feature of the proposed strategy is that it is technology-neutral, unlike existing ones that are focused on synchronous generators. The system need for voltage stability is placed at the core of this strategy, which is translated into a requirement for reactive power provision. The proposed strategy achieves, through the combined utilization of distributed generation and traditional resources, to defer the investments in reactive compensating equipment. Dynamic and transient studies are conducted to demonstrate the technical benefits of the strategy, while its practical feasibility is also validated through hardware-in-the-loop testing.

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Section: F Actors' Role Towards Realizing the Strategymentioning

confidence: 99%

Provision of Voltage Ancillary Services Through Enhanced TSO-DSO Interaction and Aggregated Distributed Energy Resources

Rousis

Tzelepis

Pipelzadeh

et al. 2021

IEEE Trans. Sustain. Energy

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“…erefore, the voltage stability monitoring and assessment of power systems based on PMU data are of great significance in the new context [22][23][24][25].…”

Section: Introductionmentioning

confidence: 99%

Online Static Voltage Stability Monitoring for Power Systems Using PMU Data

Pan

Dong

Fan

et al. 2020

Mathematical Problems in Engineering

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A new online static voltage stability monitoring method for power systems is proposed by using phasor measurement unit (PMU) data in this paper. This approach uses the real-time power, voltage, and phase angle data collected by the PMU to estimate the power flow Jacobian matrix of the system, and then the static voltage stability is monitored via the minimum singular values (MSVs) of the power flow Jacobian matrix. The novelty of the approach lies in the fact that it only utilizes PMU data for implementing online monitoring of the power system static voltage stability, independent of the physical model and its parameters. The application results on the IEEE 57-bus test system verify the effectiveness of the proposed approach.

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“…The first part of the question (awareness of stability) is answered using the real-time voltage stability assessment algorithms. Early detection of impending voltage instability is one of the great interests in power system research over the years and is still under consideration [2][3][4][5][6]. In general, studies in this area can be categorised in different ways such as time of detection (near to instability occurrence versus close to and/or just after disturbance), required structure (model-based versus measurement based), measurement configuration for those measurement-based approaches (local versus global, standard supervisory control, and data acquisition-type versus synchronised phasor measurement), the cause of voltage instability that is discussed (smooth load-increase scenarios versus outages and severe load-increase scenarios), and the type of analysis used to model instability (static versus dynamic).…”

Section: Introductionmentioning

confidence: 99%