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Title:
GROUP-BASED ONLINE OPTIMIZATION METHOD FOR OPTIMAL POWER GRID TOPOLOGY TAKING PREDICTED ACCIDENT SETS INTO CONSIDERATION
Document Type and Number:
WIPO Patent Application WO/2021/077596
Kind Code:
A1
Abstract:
A group-based online optimization method for optimal power grid topology taking predicted accident sets into consideration. Under the constraint of the number of lines that are allowed to be connected and disconnected, a set of optimal connection and disconnection line schemes taking a mathematical model of the optimal connection and disconnection line, with an enhanced voltage stability, of predicted accident sets into consideration are found. The schemes satisfy the following conditions: maximizing a load margin of an expected ground-state power system after disconnection, such that load margins of all predicted accidents and the expected ground-state power system can satisfy threshold value requirements, and the expected ground-state power system can satisfy safe operation constraints after disconnection. The problem of online connection and disconnection line identification of power system voltage stability enhancement control is solved through four stages of evaluation, predicted accident grouping and predicted accident representative connection and disconnection line identification, expected ground-state power system connection and disconnection line identification, and verification, and finally, connection and disconnection line schemes satisfying a voltage stability load margin threshold value of an expected ground-state power system and predicted accidents sets are provided in order to enhance the static voltage stability of the power system.

Inventors:
WANG LEI (CN)
CHIANG HSIAO-DONG (CN)
Application Number:
PCT/CN2019/127465
Publication Date:
April 29, 2021
Filing Date:
December 23, 2019
Export Citation:
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Assignee:
UNIV SHANDONG TECHNOLOGY (CN)
International Classes:
H02J3/00
Foreign References:
CN103746368A2014-04-23
CN107069749A2017-08-18
CN107785889A2018-03-09
US20150378387A12015-12-31
CN106374460A2017-02-01
Other References:
WANG, LEI: "On-Line Network Topology Optimization for Increasing Static Stability Limit of Large-Scale Power Systems", CHINESE DOCTORAL DISSERTATIONS FULL-TEXT DATABASE, ELECTRONIC JOURNALS, no. 8, 15 August 2016 (2016-08-15), pages 1 - 122, XP055805060, ISSN: 1674-022X
WANG, LEI: "On-Line Network Topology Optimization for Increasing Static Stability Limit of Large-Scale Power Systems", CHINESE DOCTORAL DISSERTATIONS FULL-TEXT DATABASE, ELECTRONIC JOURNALS, no. 08, 15 August 2016 (2016-08-15), pages 1 - 122, XP055805060, ISSN: 1674-022X
WANG LEI; CHIANG HSIAO-DONG: "Toward Online Line Switching for Increasing Load Margins to Static Stability Limit", IEEE TRANSACTIONS ON POWER SYSTEMS., IEEE SERVICE CENTER, PISCATAWAY, NJ., US, vol. 31, no. 3, 1 May 2016 (2016-05-01), US, pages 1744 - 1751, XP011606591, ISSN: 0885-8950, DOI: 10.1109/TPWRS.2015.2442265
Attorney, Agent or Firm:
JINAN CHENGZHI TRADEMARK & PATENT OFFICE CO., LTD. (CN)
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