US 12,424,849 B2
Method of controlling a power distribution system including a microgrid
Ritwik Majumder, Vasteras (SE)
Assigned to HITACHI ENERGY LTD, Zurich (CH); and ABB SCHWEIZ AG, Baden (CH)
Appl. No. 17/430,687
Filed by Hitachi Energy Ltd, Zürich (CH); and ABB Schweiz AG, Baden (CH)
PCT Filed Feb. 21, 2020, PCT No. PCT/EP2020/054592
§ 371(c)(1), (2) Date Aug. 12, 2021,
PCT Pub. No. WO2020/169788, PCT Pub. Date Aug. 27, 2020.
Claims priority of application No. 19158755 (EP), filed on Feb. 22, 2019.
Prior Publication US 2022/0166218 A1, May 26, 2022
Int. Cl. H02J 3/06 (2006.01); H02J 3/38 (2006.01); H02J 13/00 (2006.01)
CPC H02J 3/06 (2013.01) [H02J 3/388 (2020.01); H02J 13/00002 (2020.01)] 5 Claims
OG exemplary drawing
 
1. A method of controlling a distribution network comprising a first part and a second part, each of said parts comprising assets, said first part and said second part being selectively connected to each other into an interconnected state at a point of common coupling (PCC), said distribution network further comprising a distribution network controller, configured to control the assets in both the first part and the second part of the distribution network, and a microgrid controller, configured to control the assets in the second part of the distribution network, the method comprises:
monitoring the distribution network, including at least one electrical entity of the distribution network;
selecting a specific control function for the distribution network controller;
controlling the assets of the distribution network based on the monitoring, wherein the controlling includes
when the at least one electrical entity violates a range, controlling the assets of the distribution network in the interconnected state in accordance with a first control mode, in which the assets of the first part are controlled by the distribution network controller in accordance with the specific control function and the assets of the second part are controlled by the microgrid controller, and
in response to the at least one electrical entity no longer violating the range while in the first control mode, controlling the assets of the distribution network in the interconnected state in accordance with a second control mode, in which the assets of the first part and the second part are both controlled by the distribution network controller in accordance with the specific control function;
wherein one or both of the first control mode or the second control mode further includes informing the microgrid controller which specific control function is currently being used by the distribution network controller.