3856 XXXI International Mineral Processing Congress 2024 Proceedings/Washington, DC/Sep 29–Oct 3
Figure 12. (a) Speed profile of Ball Mill 1 for an 8-month period. The green line indicates the designed Mill Speed, and
the Red line indicated the maximum operating speed that can be achieved by the motors (not the critical speed). (b)Speed
profile of Ball Mill 2 for an 8-month period. The green line indicates the designed Mill Speed, and the Red line indicated the
maximum operating speed that can be achieved by the motors (not the critical speed).
FUTURE WORK
Power Factor Compensation
Several methods proposed to strengthen a weak network
(Errath, R.A. 2001) such as Synchronous Condensers and
Static Voltage Compensators are used to either absorb or
generate reactive power to improve the voltage stability. The
Active Rectifier Units installed at Detour Lake allows for a
four-quadrant operation where a bi-directional power flow
is possible. Beside the dynamic response to load changes
and a regulated DC link voltage as discussed in the pre-
vious sections, a drive equipped with an ARU is capable
of reactive power compensation. In normal operation, the
ARU equipped drives at Detour Lake Mine operate with
a power factor of 1. However, if required, each drive can
produce or absorb 7.6MVar at a power factor of 0.9 (for a
total of 30.4MVar).
Currently, Detour Lake Mine has Static Voltage
Compensators (Reactor Bank) to provide the required
power factor compensation. Plans to install Synchronous
Condensers on the system are also underway. However, since
the mine has an aggressive electrification plan to achieve
its decarbonization goals, in the future, with the increased
load of the mine, the reserve power factor compensation
Figure 12. (a) Speed profile of Ball Mill 1 for an 8-month period. The green line indicates the designed Mill Speed, and
the Red line indicated the maximum operating speed that can be achieved by the motors (not the critical speed). (b)Speed
profile of Ball Mill 2 for an 8-month period. The green line indicates the designed Mill Speed, and the Red line indicated the
maximum operating speed that can be achieved by the motors (not the critical speed).
FUTURE WORK
Power Factor Compensation
Several methods proposed to strengthen a weak network
(Errath, R.A. 2001) such as Synchronous Condensers and
Static Voltage Compensators are used to either absorb or
generate reactive power to improve the voltage stability. The
Active Rectifier Units installed at Detour Lake allows for a
four-quadrant operation where a bi-directional power flow
is possible. Beside the dynamic response to load changes
and a regulated DC link voltage as discussed in the pre-
vious sections, a drive equipped with an ARU is capable
of reactive power compensation. In normal operation, the
ARU equipped drives at Detour Lake Mine operate with
a power factor of 1. However, if required, each drive can
produce or absorb 7.6MVar at a power factor of 0.9 (for a
total of 30.4MVar).
Currently, Detour Lake Mine has Static Voltage
Compensators (Reactor Bank) to provide the required
power factor compensation. Plans to install Synchronous
Condensers on the system are also underway. However, since
the mine has an aggressive electrification plan to achieve
its decarbonization goals, in the future, with the increased
load of the mine, the reserve power factor compensation