A short survey of methods for voltage instability detection

Glavić, Mevludin; Cutsem, Thierry Van

doi:10.1109/pes.2011.6039311

Cited by 117 publications

(107 citation statements)

References 44 publications

(66 reference statements)

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“…Even if the controllers solve a local optimization based on limited system observability, the information that are exchanged serve as an input for the optimization problem. Further methods for voltage instability detection including both centralized and local approaches are summarized in [11] and [12].…”

Section: Context and State Of The Artmentioning

confidence: 99%

Agent‐based identification and control of voltage emergency situations

Robitzky

Weckesser²,

Häger

et al. 2018

IET Generation, Transmission & Distribution

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Changing dynamics of power systems caused by the migration from conventional to distributed energy sources increase the risk of blackouts due to voltage instability, especially in case of unforeseen network conditions (e.g., (N-k)-cases). To enable a both secure and efficient power supply, novel monitoring and emergency control systems for the identification of voltage emergency situations as well as the execution of control actions are required that react reliably in due time and adaptively in case of changing network situations. This paper presents a distributed agent-based approach to counteract voltage instability that is based solely on local measurements and limited inter-agent communication. Distributed agents located at substations in the (sub-)transmission network monitor distribution and transmission voltages as well as load tap changer positions and are able to autonomously curtail load in case system stability is endangered. The applicability of the approach is demonstrated in a co-simulation environment interfacing the multi-agent system with a dynamic power system simulation. The presented approach allows for an early detection of voltage instability as well as a coordinated execution of available control actions. IntroductionThe large-scale integration of renewable energy sources and the related decommissioning of conventional power plants change the complexity and dynamics of future power grids. Especially in case of (N-k) situations, the risk of regional or large-scale blackouts due to long-term voltage instability has to be carefully assessed. To counteract critical network conditions, novel emergency control concepts acting timely and making use of available measures are essential for maintaining system stability in future power systems [1]. The major challenges for such systems are (i) a reliable reaction in due time, (ii) the adaptability in case of changing network conditions, (iii) the robustness to communication failures, and (iv) the coordinated activation of countermeasures.As an alternative to centralized system integrity protection schemes requiring significant computational effort in case of largescale grids or the comprehensive installation of wide-area monitoring and control systems, as proposed in [2]. is proposed. Future substations will be connected through high speed communication links which allows for distributed controllers communicating between each other. In particular, a Multi-Agent System (MAS) is developed with intelligent agents situated at substations in the transmission and subtransmission network. Agents monitor the trend of local bus voltages, communicate with other agents and decide about corrective control actions autonomously. The developed approach allows for fast detection of an evolving voltage instability after the system is subjected to severe disturbances as well as the autonomous activation of countermeasures in order to restore a stable state of equilibrium with acceptable bus voltages.The paper is structured as follows. First, in Section 2 the...

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Section: Context and State Of The Artmentioning

confidence: 99%

Agent‐based identification and control of voltage emergency situations

Robitzky

Weckesser²,

Häger

et al. 2018

IET Generation, Transmission & Distribution

Self Cite

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“…The aim of these methods as well as the one proposed in this paper is to identify an evolving instability before it is apparent from sole observation of bus voltage magnitudes. A review of 15 existing voltage instability detection methods has recently been published in [4]. The developed methods are either attempting to detect voltage instability on a system-wide level or purely locally.…”

Section: Introductionmentioning

confidence: 99%

Local identification of voltage instability from load tap changer response

Weckesser

Papangelis

Vournas

et al. 2017

Sustainable Energy, Grids and Networks

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“…HE objective of power system voltage stability monitoring and instability detection is to assess stability conditions based on the information about current system operating state and to detect the onset of instability [1].…”

Section: Introductionmentioning

confidence: 99%

“…In this respect, development of the PMU technology in late 80's opened new perspectives in dealing with problems of voltage stability monitoring and instability detection [1,2,3].…”

Section: Introductionmentioning

confidence: 99%

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A simple computation and visualization of voltage stability power margins in real-time

et al. 2012

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Abstract-This paper introduces a simple method to monitor power system voltage stability conditions in real-time. The method is based on the concept of Voltage Instability Predictor (VIP). The essence of the method is a simple computation of a voltage stability boundary based on VIP derived quantities. The stability boundary is assumed as a parabolic equation in the P-Q plane identified using measurements collected at a specific substation, transmission path, or load center. The computed stability boundary is further visualized in a P-Q plane, together with a point representing the current operating conditions, and generally re-computed as soon as the new set of measurements is collected (preferably at high rates using phasor measurement units). Simplicity and easy interpretation of the results brings this method as a useful tool to increase system operator situational awareness. Supporting results are provided using relatively big test system (52 bus Nordic test system) and a reallife system (a portion of the North-West USA system).

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A short survey of methods for voltage instability detection

Cited by 117 publications

References 44 publications

Agent‐based identification and control of voltage emergency situations

Agent‐based identification and control of voltage emergency situations

Local identification of voltage instability from load tap changer response

A simple computation and visualization of voltage stability power margins in real-time

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