Design of Distributed Damping Controller in Smart Grid

doi:10.11930/j.issn.1004-9649.2017.01.067.07

Abstract

Abstract: With the support of wide area measurement system(WAMS), the smart grid can effectively control the stable operation of power grid through interaction of information. For the low frequency oscillation problem of wide area interconnected power system in smart grid, this paper proposes a distributed wide area damping controller by taking advantage of the flexibility of distributed control, which only uses the measurements from local and adjacent nodes as the input signals. The new graph theory is adopted to describe the communication topology of the controller’s input signals. By taking into account of the transmission delay of remote signals, the controller is designed under the sufficient condition of time-delay dependent stability. Finally, a simulation comparison is made on a four-machine two-area system, which shows that the designed controller can effectively improve the system damping and enhance the stability of system.

Key words: smart grid, interconnected electric power system, wide area measurement system(WAMS), distributed damping control, low frequency oscillation, delay dependent

CLC Number:

TM712

SHENG Lijian, SUN Jun, WANG Hailong, FU Rong, YONG Taiyou. Design of Distributed Damping Controller in Smart Grid[J]. Electric Power, 2017, 50(1): 67-73.

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URL: https://www.electricpower.com.cn/EN/10.11930/j.issn.1004-9649.2017.01.067.07

https://www.electricpower.com.cn/EN/Y2017/V50/I1/67

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