Advanced grid event analysis at ISO New England using PhasorPoint

Luo, Xiaochuan; Litvinov, Eugene; Dahal, Nischal; Parashar, Manu; Hay, Karine; Wilson, Douglas

doi:10.1109/pesgm.2014.6938874

Cited by 11 publications

(4 citation statements)

References 3 publications

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“…The self-oscillation instability is mostly caused by improper designs of automatic control [10], and it is highly related to the damping of oscillatory modes. Therefore, the damping ratio of poorly-damped modes deserve dedicated monitoring programs in operations and planning [11] to avoid self-oscillation instability. The aperiodic instability refers to the mechanism that two conjugate eigenvalues first collide on the real axis at point P co , split into two real eigenvalues and one of them becomes positive at point C ap leading to an aperiodic instability, as illustrated by black curves in Fig.…”

Section: B Scope Of This Workmentioning

confidence: 99%

“…The determination of the transformation in ( 10) is intuitively generalized from the investigation of a general singlemachine-infinite-bus (SMIB) power system [17] [18] as shown in (11), where the system has an equilibrium at origin and β = P max ω s /2H for simplicity (note that P m = P max sin δ s and P e = P max sin(δ + δ s )). The linearization of (11) at the origin is obtained as (12).…”

Section: A Simplifying Nonlinear Dynamic Model In Modal Spacementioning

confidence: 99%

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A Modal-Space Method for Online Power System Steady-State Stability Monitoring

Wang,

Xie,

Maslennikov

et al. 2020

Preprint

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This paper proposes a novel approach to estimate the steady-state angle stability limit (SSASL) by using the nonlinear power system dynamic model in the modal space. Through two linear changes of coordinates and a simplification introduced by the steady-state condition, the nonlinear power system dynamic model is transformed into a number of singlemachine-like power systems whose power-angle curves can be derived and used for estimating the SSASL. The proposed approach estimates the SSASL of angles at all machines and all buses without the need for manually specifying the scenario, i.e. setting sink and source areas, and also without the need for solving multiple nonlinear power flows. Case studies on 9bus and 39-bus power systems demonstrate that the proposed approach is always able to capture the aperiodic instability in an online environment, showing promising performance in the online monitoring of the steady-state angle stability over the traditional power flow-based analysis.

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Section: B Scope Of This Workmentioning

confidence: 99%

Section: A Simplifying Nonlinear Dynamic Model In Modal Spacementioning

confidence: 99%

A Modal-Space Method for Online Power System Steady-State Stability Monitoring

Wang,

Xie,

Maslennikov

et al. 2020

Preprint

Self Cite

View full text Add to dashboard Cite

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“…With the rapid increment in the number of phasor measurement units (PMUs) in the modern power system, many aspects of network dynamic behaviour manifesting as oscillation events have become more observable [1]. These oscillations may be poorly damped natural oscillations or forced due to repetitive network activity commonly termed as sustained oscillation which may pose a threat to the overall power system security [2].…”

Section: Introductionmentioning

confidence: 99%

Forced oscillation source location in power systems using system dissipating energy

Jha

Senroy

2019

IET Smart Grid

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A dissipating energy-based technique is proposed to locate the source of forced oscillations (FOs) in power systems. The network and load information is incorporated into the developed algorithm and continuously updated using supervisory control and data acquisition (SCADA) measurement. The effect of electromechanical damping on system response in FO scenario is discussed; and therefore, the efficiency of the proposed technique to locate the source has been investigated. The proposed methodology is tested and verified for different simulation test cases and for different scenario viz. for single and multiple sources of disturbances. In the case of multiple sources of disturbances with different time of initiation of the disturbance, the proposed technique successfully locates all sources in their time durations of disturbance. Different load models have been evaluated for their impact on the success of the proposed algorithm in a real-time digital simulation environment. The proposed technique is successfully verified for the test cases reported by the IEEE PES Task Force on Oscillation Source Location.

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“…Such unexpected sustained oscillations may reduce the power transfer limit and even result in detrimental consequences on the system equipment. To solve this problem, researches on the analysis, detection, classification, location and control design have always been active during the past several decades while only a few of them have been integrated into system control centers to help system operators [1,2].…”

Section: Introductionmentioning

confidence: 99%

Location methods of oscillation sources in power systems: a survey

Wang

Sun

2016

J. Mod. Power Syst. Clean Energy

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The deployment of a synchrophasor-based widearea measurement system (WAMS) in a power grid largely improves the observability of power system dynamics and the operator's real-time situational awareness for potential stability issues. The WAMS in many power grids has successfully captured system oscillation events, e.g. poorly damped natural oscillations and forced oscillations, from time to time. To identify the root cause of an observed oscillation event for further mitigation actions, many methods have been proposed to locate the source of oscillation based on different ideas and principles. However, most methods proposed so far for locating the oscillation source in a power grid are not reliable enough for practical applications. This paper presents a comprehensive review of existing location methods, which basically fall into four major categories, plus a few other methods. Their advantages and disadvantages are discussed in detail. Some trends and challenges on the problem of oscillation source location are pointed out along with potential future research directions. Finally, a practical, general scheme for oscillation source location using available location methods is suggested and analyzed.

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Advanced grid event analysis at ISO New England using PhasorPoint

Cited by 11 publications

References 3 publications

A Modal-Space Method for Online Power System Steady-State Stability Monitoring

A Modal-Space Method for Online Power System Steady-State Stability Monitoring

Forced oscillation source location in power systems using system dissipating energy

Location methods of oscillation sources in power systems: a survey

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