Wide-Area Measurement-Based Modal Decoupling for Power System Oscillation Damping

Journal Article · Wed Jan 01 00:00:00 EST 2020 · Electric Power Systems Research

DOI:https://doi.org/10.1016/j.epsr.2019.106022· OSTI ID:1569041

Fan, Rui ^[1]; Wang, Shaobu ^[1]; Huang, Renke ^[1]; Lian, Jianming ^[1]; Huang, Zhenyu  ^[1]

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1. BATTELLE (PACIFIC NW LAB)

Inter-area oscillation modes usually fall within the same frequency range of 0.1 to 1.0 Hz; thus, power oscillation damping (POD) control methods should avoid unnecessary excitation of weakly damped modes. This paper presents a decoupled control strategy to damp inter-area oscillations in the power grid. Pure oscillation mode signals are extracted from wide-area measurements and used as feedback input for POD actuators such as power system stabilizers or high-voltage direct current transmission. The decoupled control strategy is able to increase the damping of the concerned oscillation modes without deteriorating others. This proposed strategy could be implemented independently, or serve as a complement and work along with conventional POD controllers to damp concerned inter-area modes. The proposed method has been tested on a modied MinniWECC system. Extensive results indicate that inter-area oscillations can be successfully and precisely damped using the proposed decoupled strategy.

• Research Organization: Pacific Northwest National Lab. (PNNL), Richland, WA (United States)
• Sponsoring Organization: USDOE
• DOE Contract Number: AC05-76RL01830
• OSTI ID: 1569041
• Report Number(s): PNNL-SA-139779
• Journal Information: Electric Power Systems Research, Vol. 178
• Country of Publication: United States
• Language: English