TRANSFORMER SUBSTATION THREE-PHASE LINEAR GENERALIZED STATE ESTIMATION METHOD

WIPO Patent Application WO/2016/078477

A1

A transformer substation three-phase linear generalized state estimation method, comprising: establishing a linear measurement equation and an on-off state pseudo measurement equation based on split-phase zero impedance network by using three-phase multisource real-time data from a measurement and control device, phasor measurement unit and protective device to participate in the state estimation together; identifying bad data with the maximum residual error method, and simultaneously identifying topology errors. The method improves data redundancy and calculation reliability for state estimation and eliminates the need for iterative calculation, and resolves the bad data and topology error within the transformer substation, thus providing more accurate basic data and reducing state estimation calculation for a regulation and control center.

ZHANG TING (CN)
ZHAI MINGYU (CN)
ZHANG HAIBIN (CN)
QI MIAOMIAO (CN)

PCT/CN2015/090854

May 26, 2016

September 26, 2015

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NARI TECHNOLOGY DEV CO LTD (CN)

H02J3/00

CN104332997A	2015-02-04
CN101499659A	2009-08-05

LI, QINGXIN ET AL.: "Zero Impedance Branch Based Substation Three-phase Nonlinear State Estimation Method", PROCEEDINGS OF THE CSEE, vol. 31, no. 25, 5 September 2011 (2011-09-05), pages 75 - 76, ISSN: 0258-8013
YANG, TAO ET AL.: "Two-level PMU-based Linear State Estimator", POWER SYSTEMS CONFERENCE AND EXPOSITION, 2009.PSCE'09. IEEE /PES, 18 March 2009 (2009-03-18), pages 1 - 2, ISBN: 978-1-4244-3811-2

CHANGZHOU BAIYETENGFEI PATENT AGENCY(GENERAL PARTNERSHIP) (CN)
常州佰业腾飞专利代理事务所（普通合伙） (CN)

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