System and method of linear state estimation of a distribution network from synchronous smart meter and line sensor

Patent metadata

Field	Value
Publication number	US-12562580-B2
Application number	US-202318137301-A
Country	US
Kind code	B2
Filing date	Apr 20, 2023
Priority date	Apr 22, 2022
Publication date	Feb 24, 2026
Grant date	Feb 24, 2026

Abstract

A system for determining a linear state estimation of a power distribution network. The system includes a plurality of metering devices, a plurality of power sources, each of the plurality of power sources coupled to a respective metering device, and a plurality of collection devices, each of the plurality of collection devices in electronic communication with a respective metering device. The plurality of collection devices measure an Advanced Metering Infrastructure (AMI) dataset and calculate a phase angle of the power source coupled to the metering device. The system includes a host device in electronic communication with the plurality of collection devices. An electronic processor of the host device receives the AMI dataset and the phase angle of the plurality of metering devices, determines the linear state estimation of the power distribution network based on the phase angle and the AMI dataset, and identifies information associated with the power distribution network.

First claim

What is claimed is:

1 . A system for determining a linear state estimation of a power distribution network, the system comprising:
a plurality of metering devices; a plurality of power sources, wherein each one of the plurality of power sources is coupled to a respective metering device of the plurality of metering devices; a plurality of collection devices, wherein each of the plurality of collection devices is in electronic communication with a respective metering device of the plurality of metering devices,
wherein the plurality of collection devices are configured to measure an Advanced Metering Infrastructure (AMI) dataset and calculate a phase angle of the power source coupled to the metering device; and
a host device in electronic communication with the plurality of collection devices, the host device including a memory and an electronic processor, wherein the electronic processor is configured to:
receive the AMI dataset and the phase angle of at least one of the plurality of metering devices,
determine the linear state estimation of the power distribution network based on the phase angle and the AMI dataset, and
based on determining the linear state estimation, identify information associated with the power distribution network.

2 . The system of claim 1 , wherein the AMI dataset and the phase angle of each of the plurality of power sources are associated with a first time.

3 . The system of claim 2 , wherein the first time is a synchronous time that the AMI dataset is measured and the phase angle is calculated for each of the plurality of power sources.

4 . The system of claim 3 , wherein the linear state estimation is determined based on the AMI dataset and the phase angle of each of the plurality of collection devices associated with the first time.

5 . The system of claim 4 , wherein the plurality of collection devices are further configured to measure the AMI dataset and calculate the phase angle of each of the plurality of power sources at a second time.

6 . The system of claim 5 , wherein a second linear state estimation is determined based on the AMI dataset and the phase angle of each of the plurality of collection devices associated with the second time.

7 . The system of claim 1 , wherein the AMI dataset includes at least one of a voltage measurement, a current measurement, or a power factor.

8 . The system of claim 1 , wherein the host device is further configured to:
receive a circuit map of the power distribution network; and determine, based on the linear state estimation of the power distribution network and the circuit map, information associated with the power distribution network.

9 . The system of claim 1 , wherein the host device is further configured to:
calculate a complex voltage value of at least one of the plurality of metering devices; and based on the identified information and the complex voltage value, determine a power flow, a line loss localization, a failing component, a high impedance fault, or a theft detection of the power distribution network.

10 . The system of claim 1 , wherein the host device is a server based computing system.

11 . A method for determining a linear state estimation of a power distribution network, wherein the power distribution network includes a plurality of metering devices; a plurality of power sources, wherein each one of the plurality of power sources is coupled to a respective metering device of the plurality of metering devices; a plurality of collection devices, wherein each of the plurality of collection devices is in electronic communication with a respective metering device of the plurality of metering devices; and a host device in electronic communication with the plurality of collection devices, the host device including a memory and an electronic processor, the method comprising:
measuring, via the plurality of collection devices, an Advanced Metering Infrastructure (AMI) dataset of the power source coupled to the metering device; calculating, via the plurality of collection devices, a phase angle of the power source coupled to the metering device; receiving, via the host device, the AMI dataset and the phase angle of at least one of the plurality of metering devices; determining, via the host device, the linear state estimation of the power distribution network based on the phase angle and the AMI dataset; and identifying, via the host device, information associated with the power distribution network based on the linear state estimation.

12 . The method of claim 11 , wherein the AMI dataset and the phase angle of each of the plurality of power sources are associated with a first time.

13 . The method of claim 12 , wherein the first time is a synchronous time that the AMI dataset is measured and the phase angle is calculated for each of the plurality of power sources.

14 . The method of claim 12 , wherein the linear state estimation is determined based on the AMI dataset and the phase angle of each of the plurality of collection devices associated with the first time.

15 . The method of claim 13 , wherein the plurality of collection devices are further configured to measure the AMI dataset and calculate the phase angle of each of the plurality of power sources at a second time.

16 . The method of claim 15 , wherein a second linear state estimation is determined based on the AMI dataset and the phase angle of each of the plurality of collection devices associated with the second time.

17 . The method of claim 11 , wherein the AMI dataset includes at least one of a voltage measurement, a current measurement, or a power factor.

18 . The method of claim 11 , wherein the method further comprises:
receiving, via the host device, a circuit map of the power distribution network; and determining, via the host device, based on the linear state estimation of the power distribution network and the circuit map, information associated with the power distribution network.

19 . The method of claim 11 , wherein the method further comprises:
calculating a complex voltage value of at least one of the plurality of metering devices; and determining, via the host device, a power flow, a line loss localization, a failing component, a high impedance fault, or a theft detection of the power distribution network based on the identified information and the complex voltage value.

20 . The method of claim 11 , wherein the host device is a server based computing system.

Assignees

• Aclara Tech Llc

Inventors

• Rieken David William
• Piyasinghe Lakshan Prageeth
• Smith Roger Alan
• Emelko Glenn Anthony

Classifications

• G01R21/133

  by using digital technique · CPC title

• G01R29/18

  Indicating phase sequence; Indicating synchronism · CPC title

• G01R25/00

  Arrangements for measuring phase angle between a voltage and a current or between voltages or currents · CPC title

• G01R19/2513

  Arrangements for monitoring electric power systems, e.g. power lines or loads; Logging · CPC title

• Y02E60/00

  Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation · CPC title