A study of temporary overvoltage at HVDC rectifier stations

Author

Zhou, Chenghong ; Wang, Pei

Author_Institution

Syst. Planning Dept., Manitoba Hydro, Winnipeg, MB, Canada

fYear

2011

fDate

3-5 Oct. 2011

Firstpage

211

Lastpage

215

Abstract

This paper presents a study of Temporary Overvoltage (TOV) on the Manitoba Hydro rectifier system under the proposed development of a new HVDC link and generations. The TOV assessment is based on a full load rejection of three Bipoles, which should result in the highest temporary fundamental frequency overvoltage. The detailed PSSE TOV studies include several system topologies regarding generation and transmission line connections as well as new converter ratings. The paper also discusses the relationship between the system strength described by Multi-Infeed Effective Short Circuit Ratio (MIESCR) and the TOV. A more general analytical equation for estimating TOVs was derived by introducing a multiplying factor related to Bipole parameters. The validation of the equation based on PSSE studies indicates that the revised equation could be used as a screening tool for predicting TOVs in a multi-infeed system.

Keywords

HVDC power convertors; hydroelectric power stations; overvoltage; rectifiers; Bipole parameters; HVDC link; HVDC rectifier stations; LCC; MIESCR; Manitoba hydro rectifier system; PSSE TOV; converter ratings; line commutated current; multi-infeed effective short circuit ratio; temporary fundamental frequency overvoltage; transmission line connections; Equations; HVDC transmission; Mathematical model; Planning; Reactive power; Rectifiers; Voltage control; Line Commutated Current (LCC); Multi-Infeed Effective Shout Circuit Ratio (MIESCR); Multi-Infeed Interactive Factor (MIIF); Northern Collector System (NCS); Temporary Overvoltage (TOV);

fLanguage

English

Publisher

ieee

Conference_Titel

Electrical Power and Energy Conference (EPEC), 2011 IEEE

Conference_Location

Winnipeg, MB

Print_ISBN

978-1-4577-0405-5

Type

conf

DOI

10.1109/EPEC.2011.6070198

Filename

6070198