Control of HVDC Links in Synchronous and Asynchronous AC Grids using Wide Area Phase Angle Measurement

High Voltage DC Transmission (HVDC) is used for bulk power transfer over long distances. Manitoba Hydro’s HVDC system involves collection of AC power in the north where it is converted to DC and then transferred to southern Manitoba (approx 900km) through asynchronous HVDC links where it is converted back to AC to feed consumers. Asynchronous HVDC links can be used for improving electro-mechanical dynamics of the interconnected AC grids. This includes the functions of power swing damping, emulation of inertia and power-frequency droop. A key concern is the possible electro mechanical coupling which may arise if feedback signals from the more than one AC grid are used for power flow control. In this internship, we will examine the power flow control strategies for asynchronous links and explores the use of wide-area measurements to improve their stability, flexibility and robustness.

Faculty Supervisor:

Aniruddha Gole

Student:

Prashant Agnihotri

Partner:

Manitoba Hydro

Discipline:

Engineering - computer / electrical

Sector:

Energy

University:

University of Manitoba