US 11,870,262 B2Granted

Control architectures for power distribution networks with distributed energy resources

AssigneeHitachi Energy Ltd

InventorsAlexander Brissette, Joseph A. Carr, Zhenyuan Wang

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Abstract

Architectures, apparatuses, methods, systems, and techniques for controlling electrical power distribution network are disclosed. Embodiment distributed, hierarchical controls including layered locational energy service control variables may be utilized to determine and control the provision of energy services, including real power, reactive power (VAR), and capacity reserves, by DERs in a distribution network. In a first ex-ante iteration a simulation may be performed to calculate a set of subnetwork-specific control variables based on subnetwork locational energy service prices and a plurality of sets of DER-specific control variables based on DER locational energy service prices. A second ex-ante iteration calculates a set of actual subnetwork-specific control variables based on subnetwork locational energy service prices and a plurality of sets of actual DER specific control variables based on DER locational energy service prices. Provision of energy services by DERs in a distribution network occurs in response to the determined control variables.

Claims22

Dependent claims

A method for controlling operation of an electrical power network including a hierarchy of control layers, the method comprising:

providing a first layer controller at a first layer, the first layer controller being configured to couple the electrical power network to a higher layer electrical power transmission grid;
providing second layer controllers at a second layer;
providing third layer controllers at a third layer, each of the third layer controllers being configured to control at least one third layer entity,
the first layer controller and the second layer controllers are configured to bi-directionally communicate which each other, and the second layer controllers and the third layer controllers are configured to bi-directionally communicate which each other, and
each of the second layer controllers are configured to control a respective subnetwork comprising at least one of the third layer controllers and the respective at least one third layer entity;
determining a service control variable for controlling operation of the electrical power network, the determining comprising:
(a) determining and transmitting to the first layer controller by the second layer controllers aggregate energy service forecasts for their respective subnetworks determined based upon third layer entity energy service forecasts provided by the respective at least one third layer controller in each subnetwork,
(b) determining and transmitting to each of the second layer controllers by the first layer controller respective second layer controller-specific energy service forecasts determined in response to the aggregate energy service forecasts and a power flow optimization for the electrical power network, and
(c) determining and transmitting to the respective at least one third layer controller by the second layer controllers respective third layer controller-specific energy service forecasts and energy service requests determined in response to the respective second layer controller-specific energy service forecasts;
and
in response to transmission of the third layer controller-specific energy service forecasts and energy service requests, receiving at the second layer at least a portion of the energy services requested by the third layer controllers and receiving at the first layer at least a portion of the energy services requested by the second layer controllers.

8 more elements

A system for controlling operation of an electrical power network including a hierarchy of control layers, the system comprising:

a first layer controller at a first layer, the first layer controller being configured to couple the electrical power network to a higher layer electrical power transmission grid;
second layer controllers at a second layer;
and
third layer controllers at a third layer, each of the third layer controllers being configured to control at least one third layer entity,
the first layer controller and the second layer controllers are configured to bi-directionally communicate which each other, and the second layer controllers and the third layer controllers are configured to bi-directionally communicate which each other, and
each of the second layer controllers are configured to control a respective subnetwork comprising at least one of the third layer controllers and the respective at least one third layer entity;
the system being configured to determine a service control variable for controlling operation of the electrical power network in which:
the second layer controllers are configured to (a) determine and transmit to the first layer controller aggregate energy service forecasts for their respective subnetworks determined based upon third layer entity energy service forecasts provided by the respective at least one third layer controller in each subnetwork,
the first layer controller is configured to (b) determine and transmit to each of the second layer controllers respective second layer controller-specific energy service forecasts determined in response to the aggregate energy service forecasts and a power flow optimization for the electrical power network, and
the second layer controllers are configured to (c) determine and transmit to the respective at least one third layer controller respective third layer controller-specific energy service forecasts and energy service requests determined in response to the respective second layer controller-specific energy service forecasts;
the second layer being configured to, in response to transmission of the third layer controller-specific energy service forecasts and energy service requests, receive at least a portion of the energy services requested by the third layer controllers;
and
the first layer being configured to receive at least a portion of the energy services requested by the second layer controllers.

10 more elements

Dependencies are inferred from the claim text.

Facts

Application: 17/425,136Filed 6 Feb 2020 · continuation
Priority: 13 Feb 2019
Published: US 2022/0115870 A114 Apr 2022
Granted: 9 Jan 2024
Term ends: Not estimatedThe source records don’t support an estimate.

Classification25 codes

G06Q 10/04
Administration; Management: forecasting or optimisation specially adapted for administrative or management purposes, e.g. linear programming or…
H02J 3/18
Circuit arrangements for AC mains or AC distribution networks: arrangements for adjusting, eliminating or compensating reactive power in networks
G05B 17/02
Systems involving the use of models or simulators of said systems: electric
G06Q 10/06315
Resource planning, allocation, distributing or scheduling for enterprises or organisations: needs-based resource requirements planning or analysis

Family

Application16/274,314Parent of this continuation · filed 13 Feb 2019
US 2022/0115870 A1Pre-grant publication · published 14 Apr 2022
US 10,903,652 B2Parent of this continuation
US 2020/0259329 A1Published application
US 11,870,262 B2This patent

From the US filing history. Foreign family members aren’t listed.