Locating method of disturbance source of forced power oscillation based on prony anyasis

Gao, Yi; Liu, Dichen; Huang, Guan-bin; Shi, Qiuyun

doi:10.1109/ciced.2012.6508616

Cited by 12 publications

(11 citation statements)

References 2 publications

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“…Another extension of this concept is mentioned in [31], where the damping torque coefficient for the same generator is supposed to be different with respect to different oscillation modes such that it should be calculated separately for each mode. Thus, the damping torque of a generator in a multi-machine system could be estimated using the system trajectories based on a certain modal analysis method, like total least square-estimation of signal parameters via rotational invariance technique (TLS-ESPRIT) [31] or Prony [32].…”

Section: Damping Torque Based Methodsmentioning

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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Section: Damping Torque Based Methodsmentioning

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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“…Besides poorly damped oscillation, it is well recognized that there is another common type of low‐frequency oscillation, known as forced oscillation. Extensive research has been reported on the subject …”

Section: Introductionmentioning

confidence: 99%

“…More specifically, methods for locating forced oscillation sources are proposed recently in the literatures . Wang and Sun gives a comprehensive review of the location methods and elaborates on their advantages and disadvantages.…”

Section: Introductionmentioning

confidence: 99%

“…Wang and Sun gives a comprehensive review of the location methods and elaborates on their advantages and disadvantages. Typical existing methods can be mainly summarized as hybrid simulation method, energy‐based methods, damping torque methods, mode shape estimation methods, effective generator impedance method, etc. Ma et al introduces a model‐based method using hybrid dynamic simulation to locate oscillation source, which combines dynamic simulation and measured PMU data.…”

Section: Introductionmentioning

confidence: 99%

“…The device level location of this method has not been solved. The damping torque‐based method in Gao et al is proposed which regards the generator whose damping torque coefficient is estimated to be positive as oscillation source. Sarmadi and Venkatasubramanian estimates the mode shape, and the generator with the largest mode shape magnitude or leading generator in the leading group is considered as oscillation source.…”

Section: Introductionmentioning

confidence: 99%

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Application of unknown input observers to locate forced oscillation source

Luan

Gan

Wang

et al. 2019

Int Trans Electr Energ Syst

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Summary In this paper, the problem of locating forced oscillation source at device level is addressed, using unknown input observer (UIO)‐based method to realize oscillation source isolation. Firstly, a linear power system model suitable for oscillation source detection and isolation is derived. Typical oscillation sources, namely, oscillation sources from prime movers and speed governors, excitation systems, are included in the model as unknown inputs. Then, a systematic method using UIOs and fault isolation scheme to locate oscillation source is proposed. Using the disparities between the model responses generated by UIOs and the recorded responses, the proposed method establishes a one‐to‐one relationship between a residual and an oscillation source. The location of oscillation source at device level is accomplished on the basis of the different sensitivities of residuals to oscillation sources from different devices. The detectability of oscillation source and the numerical check are also discussed. The effectiveness of the proposed location method is verified by several simulation examples. The results show that the location of oscillation source by the proposed method is effective and is accurate to control the device that the oscillation source originates from.

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Survey on forced oscillations in power system

Ghorbaniparvar

2017

J. Mod. Power Syst. Clean Energy

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The oscillations in a power system can be categorized into free oscillations and forced oscillations. Many algorithms have been developed to estimate the modes of free oscillations in a power system. Recently, forced oscillations have caught many researchers' attentions. Techniques are proposed to detect forced oscillations and locate their sources. In addition, forced oscillations may have a negative impact on the estimation of mode and mode-shape if they are not properly accounted for. To improve the power system reliability and dynamic properties, it is important to first distinguish forced oscillations from free oscillations and then locate the sources of forced oscillations in a timely manner. The negative impact of forced oscillation can be mitigated when they are detected and located. This paper provides an overview of the analysis technique of forced oscillations in power systems. In addition, some future opportunities are discussed in forced oscillation studies.

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Locating method of disturbance source of forced power oscillation based on prony anyasis

Cited by 12 publications

References 2 publications

Location methods of oscillation sources in power systems: a survey

Location methods of oscillation sources in power systems: a survey

Application of unknown input observers to locate forced oscillation source

Survey on forced oscillations in power system

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