1 research outputs found
Reducing BESS Capacity for Accommodating Renewables in Subtransmission Systems with Power Flow Routers
Widespread utilization of renewable energy sources (RESs) in subtransmission
systems causes serious problems on power quality, such as voltage violations,
leading to significant curtailment of renewables. This is due to the inherent
variability of renewables and the high R/X ratio of the subtransmission system.
To achieve full utilization of renewables, battery energy storage systems
(BESSs) are commonly used to mitigate the negative effects of massive
fluctuations of RESs. Power flow router (PFR), which can be regarded as a
general type of network-side controller, has also been verified to enhance the
grid flexibility for accommodating renewables. In this paper, we investigate
the value of PFR in helping BESSs for renewable power accommodation. The
performance of PFR is evaluated with the minimum BESS capacity required for
zero renewable power curtailment with and without PFRs. The operational
constraints of BESSs and the terminal voltage property of PFRs are considered
in a multi-period optimization model. The proposed model is tested through
numerical simulations on a modified IEEE 30-bus subtransmission system and a
remarkable result shows that 15% reduction of BESS capacity can be achieved by
installing PFRs on a single line.Comment: 5 pages, 5 figure