Patent · US Active

Sensitivity based Thevenin index for voltage stability assessment considering N-1 contingency

US11029344B2 · kind B2 · utility

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13Claims

0Family size

Assignee

Geiri Co Ltd, State Grid Jiangxi Electric Power Co, State Grid Corp Of China, Geirina Inc. · US

Inventors

Xiaohu Zhang · Suzhou, CN
Di Shi · Taizhou City, CN
Xiao Lu · Nanjing, CN
Zhehan Yi · San Jose, US
Qibing Zhang · Nanjing, CN
Zhiwei Wang · Beijing, CN

Key dates

Filing date	Aug 22, 2018
Grant date	Jun 8, 2021
Priority date	—
Expiry date	Jan 4, 2040

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY04S40/20
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

Systems and method are disclosed for monitor long-term voltage stability in a power system by estimating post-contingency operating point(s) considering PV-PQ transitions based on the current operating point; predicting a sensitivity based Thevenin index (STI) for each contingency using the estimated operating condition; and determining a voltage stability assessment (VSA) considering N−1 contingency.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.