Transmitting Power System Dynamics in Existing SCADA Using Sampling/Interpolation Based Data Compression

Grasping system dynamic information is helpful for dispatcher in control center to take correct control action in time under emergency condition. Wide Area Measurement Systems (WAMS) has been viewed as an ideal system to monitor power systems since it can provide comprehensive profile and dynamic behavior of the power systems. Whereas, for its demanding request on communication systems, it might not operate when part of communication systems fails. Therefore, it is highly preferred to facilitate Supervisory Control and Data Acquisition (SCADA) with the capability to transmit power system dynamics as an alternation. Based on the development of substation automation system, a novel approach is proposed to transmit system dynamics in existing SCADA using data compression. Uniform sampling based data compression and interpolation based reconstruction are utilized to reduce data volume and mitigate restriction of communication capacity. The system dynamics is compressed in Remote Terminal Units (RTUs) so that a few samplings could contain system dynamics information. The sampled data could be used to reconstruct dynamics information by interpolation. Simulation on a 36 nodes system shows feasibility of the proposed approach.

[1]  K.K. Li,et al.  Agent-based self-healing protection system , 2006, IEEE Transactions on Power Delivery.

[2]  A. Apostolov,et al.  Functional Testing of IEC 61850 Based Protection Relays , 2007, 2007 60th Annual Conference for Protective Relay Engineers.

[3]  Hoay Beng Gooi,et al.  Internet-based SCADA display system , 2002 .

[4]  J. S. Thorp,et al.  State Estimlatjon with Phasor Measurements , 1986, IEEE Transactions on Power Systems.

[5]  M. Begovic,et al.  Nondominated Sorting Genetic Algorithm for Optimal Phasor Maesurement Placement , 2002 .

[6]  A. Apostolov.  Disturbance Recording in IEC 61850 Substation Automation Systems , 2006, 2005/2006 IEEE/PES Transmission and Distribution Conference and Exhibition.

[7]  James S. Thorp,et al.  Application of synchronised phasor measurements to real-time transient stability prediction , 1995 .

[8]  James S. Thorp,et al.  Decision trees for real-time transient stability prediction , 1994 .

[9]  Damir Novosel,et al.  Wide-Area Protection and Emergency Control , 2004, Proceedings of the IEEE.

[10]  S. J. Huang,et al.  Application of ATM-Based Network for an Integrated Distribution SCADA-GIS System , 2002, IEEE Power Engineering Review.

[11]  J. I. Escudero,et al.  Analytic Model of the Measure Errors Caused by Communications Delay , 2002, IEEE Power Engineering Review.

[12]  M. Begovic,et al.  Nondominated sorting genetic algorithm for optimal phasor measurement placement , 2002, 2003 IEEE Power Engineering Society General Meeting (IEEE Cat. No.03CH37491).

[13]  Chen-Ching Liu,et al.  The strategic power infrastructure defense (SPID) system. A conceptual design , 2000, IEEE Control Systems.

[14]  Daniel Karlsson,et al.  Wide-Area Protection and Power System Utilization , 2005, Proceedings of the IEEE.

[15]  A. Kalam,et al.  The Real-Time Publisher/Subscriber Communication Model for Distributed Substation Systems , 2007, IEEE Transactions on Power Delivery.

[16]  A. P. Apostolov.  Distributed protection, control and recording in IEC 61850 based substation automation systems , 2004 .

[17]  Zeng Xiangjun,et al.  Context Information-Based Cyber Security Defense of Protection System , 2007, IEEE Transactions on Power Delivery.

[18]  A.G. Phadke,et al.  Phasor measurement unit placement techniques for complete and incomplete observability , 2005, IEEE Transactions on Power Delivery.

[19]  김정민,et al.  Cubic Spline Interpolation을 이용한 얼굴 영상의 단순화 , 2010 .

[20]  S. Dyer,et al.  Cubic-spline interpolation. 1 , 2001 .

[21]  Lu Chao,et al.  Wide-area stability control for damping interarea oscillations of interconnected power systems , 2006 .

[22]  A.P. Apostolov.  IEC 61850 distributed analog values applications in substation automation systems , 2005, IEEE Power Engineering Society General Meeting, 2005.

[23]  R.J. Landman,et al.  Fiberoptic SCADA system safeguards underground distribution network , 1992, IEEE Computer Applications in Power.

[24]  J. Thorp,et al.  State Estimation with Phasor Measurements , 1986, IEEE Power Engineering Review.

[25]  G.N. Ericsson,et al.  A broadband wide-area network as an enabler of improved power system maintenance , 2006, IEEE Transactions on Power Delivery.

[26]  A. Abur,et al.  Multi area state estimation using synchronized phasor measurements , 2005, IEEE Transactions on Power Systems.

[27]  Peng Wang,et al.  Online short-term reliability evaluation using a fast sorting technique , 2008 .

[28]  He Fei-yue.  Networked AGC Robust Controller Design in Consideration of Communication Delay , 2006 .

[29]  G.T. Heydt,et al.  A Distributed State Estimator Utilizing Synchronized Phasor Measurements , 2007, IEEE Transactions on Power Systems.