Real Time Stability Analysis with Distributed Generation in Multi-fed RDN Using PMU and Feed Forward Technique

Abstract—

This paper analyses the stability issues of a multi-fed radial distribution network (RDN) by evaluating its states using a state-of-the-art technique under different operating condition. In its working principle, the entire RDN is visualized as a network comprising of N number of 2-bus sections cascaded sequentially. The required bus states are evaluated using the feed forward technique on the basis of the measurements from customized PMU(s) and smart meters (SMs) placed at suitable locations within the RDN. The inherent single iterative feature of the feed forward technique reduces the computational time leading toward the possibility of real time monitoring. The stability indices are evaluated based on these measured parameters for different case studies viz. normal, contingent, and faulty as well as inclusions and/or exclusions of renewables at different bus nodes conditions. The stability indices are also analyzed for inclusions and/or exclusions of renewables at different bus nodes. The findings of the analysis are summarized to propose the prediction about the abnormal running of the segment(s) of this multi-fed RDN in real time. The MATLAB simulation shows the nature of variation in voltage and power angle profiles of different buses with change in positions of DERs.

Keywords:

• multi-fed RDN
• condition monitoring
• voltage stability index
• smart meter
• phasor measurement unit (PMU)
• renewable integration
• state evaluation
• real time
• sample shifting technique
• distribution network

Additional information

Notes on contributors

Ayindrila Roy

Ayindrila Roy is associated with the department of Electrical Engineering at Techno International New Town, Rajarhat, Kolkata. She has obtained her B.Tech from Sikkim Manipal Institute of Technology and M.Tech degree from University of Calcutta. Her research areas include power system, control system and wireless communication.

Jitendranath Bera

Prof. Jitendranath Bera is associated with the department of Applied Physics, University of Calcutta, Kolkata. He has obtained his B.Tech, M.Tech degree from University of Calcutta and Ph.D. from Jadavpur University. He has more than 20 research publications in national and international journals. His research areas include power system, electrical machines, control system, wireless communication and embedded system.

Gautam Sarkar

Prof. Gautam Sarkar is associated with the department of Applied Physics, University of Calcutta, Kolkata. He has obtained his B.Tech, M.Tech and Ph.D. degree from University of Calcutta. He has more than 50 research publications in national and international journals. His research areas include power system, electrical machines and control system.