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An interval type-2 fuzzy logic controller for TCSC to improve the damping of power system oscillations

Frontiers in Energy 2013年第3期7卷 307-316页

作者： Manoj Kumar PANDA Gopinath PILLAI Vijay KUMARx Electronics & Computer Engineering Department Indian Institute ofTechnology Roorkee 247667 India Electrical Engineering Department Indian Institute of TechnologyRoorkee 247667 India

In this paper an interval type-2 fuzzy logic controller （IT2FLC） was proposed for thyristor controlled series capacitor （TCSC） to improve power system damping. For controller design, memberships of system variables were represented using interval type-2 fuzzy sets. The three-dimensional membership function of type-2 fuzzy sets provided additional degree of freedom that made it possible to directly model and handle uncertainties. Simulations conducted on a single machine infinite bus （SMIB） power system showed that the proposed controller was more effective than particle swarm optimization （PSO） tuned and type-1 fuzzy logic （T1FL） based damping controllers. Robust performance of the proposed controller was also validated at different operating conditions, various disturbances and parameter variation of the transmission line parameters.

关键词： power system oscillations thyristor controlled series capacitor (TCSC) type-2 fuzzy logic system interval type-2 fuzzy logic controller (IT2FLC)

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Adaptive Control for Damping of power system oscillations

Adaptive Control for Damping of Power System Oscillations

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2009中国控制与决策会议

作者： Jo■ef Ritonja Drago Dolinar Bojan Grar University of Maribor Faculty of Electrical Engineering and Computer ScienceSmetanova 172000 MariborSlovenia

＜正＞The paper treats the simple adaptive control for stability improvement of a synchronous generator connected to an infinite *** are:the influence of the operating point on the eigenvalues of the synchronous generator simplified linear model,the simple adaptive power system stabilizer derived from the model reference adaptive control based on command generator tracker theory,the effects of changing the design parameters and the bursting phenomenon. The control system design was carried out for the simplified linear model of a synchronous generator but for the evaluation of the control system performance the full order non-linear model of the synchronous generator was *** and experimental results show the applicability of the presented approach.

关键词： Adaptive control power system oscillations

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Estimation Method of Center of Inertia Frequency Based on Phasor Measurement Data

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Journal of Energy and power Engineering 2012年第3期6卷 434-445页

作者： Takuhei Hashiguchi Masayuki Watanabe Tadahiro Goda Yasunori Mitani Osamu Saeki Masahide Hojo Hiroyuki Ukai Graduate School of Information Science and Electrical Engineering Kyushu University Fukuoka 812-0383 Japan Faculty of Engineering Kyushu Institute of Technology Fukuoka 804-8550 Japan Graduate School of Engineering Osaka University Osaka 565-0871 Japan Faculty of Engineering The University of Tokushima Tokushima 770-8506 Japan Faculty of Engineering Nagoya Institute of Technology Aichi 466-8555 Japan

In the world, recent increased disturbances, congestion management problems, and increases of complexity in operating power systems have brought the need for integrations and improvements of power systems. Advanced applications in WAMPAC （wide area monitoring, protection, and control） systems provide a cost effective solution to improve system planning, operation, maintenance, and energy trading. Synchronized measurement technology and the application are an important element of WAMPAC. In addition, PMUs （phasor measurement units） are the most accurate and advanced time-synchronized technology available for WAMPAC application. Therefore, the original measurement system of PMUs has been constructed in Japan. This paper describes the estimation method of a center of inertia frequency by applying actual measurement data. The application of this method enables us to extract power system oscillations from measurement data appropriately. Moreover, this proposed method will help to the clarification of power system dynamics and this application will make it possible to realize the monitoring of power system oscillations associated with the power system stability.

关键词： Phasor measurement unit power system oscillations signal processing center of inertia frequency monitoring.

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