HVDC commutation failure suppression method based on energy storage virtual synchronous machine with multiple points

Authors

Qiang LI, Electric Power Science Research Institute of State Grid Jiangsu Electric Power Co., Ltd., Nanjing 211103 , China
Shengjun WU, Electric Power Science Research Institute of State Grid Jiangsu Electric Power Co., Ltd., Nanjing 211103 , China
Yang YI, School of Electrical & Information Engineering,Changsha University of Science & Technology, Changsha 410114 , China
Zewen LI, School of Electrical & Information Engineering,Changsha University of Science & Technology, Changsha 410114 , China

Keywords

energy storage virtual synchronous machines, commutation failure, HVDC, multipoint layout

Abstract

With the continuous expansion of the scale of the HVDC transmission system, the commutation failure in the converter station has an increasing impact on the safe and stable operation of the DC transmission project. This paper proposes the concept of an energy storage virtual synchronous machine, completes the construction of the model, and verifies that it has strong support for the commutation voltage drop of the HVDC system. Then,makingfull use of the reactive power compensation characteristics of the energy storage virtual synchronous machine.andthemulti-point deployment method using energy storage virtual synchronous machine is proposed to cope with multi-infeed DC commutation failure. The method firstly starts with the electrical distance between each node and the converter station to determine the area to be compensated.Then, calculates the average value of the non-fault point voltage response rate of the nodes in the compensation area is calculated.An indicator is used to determine the best The energy storage virtual synchronous machine installation site; finally, the simulation is performed in PSCAD to obtain the suppression effect of the single energy storage virtual synchronous machine access on the commutation failure.By comparing the actual grid operating data, it is verified that the proposedmethod couldeffectively exert the storage It can virtualize the aggregation effect of synchronous machines, and better suppress the failure of commutation.

DOI

10.19781/j.issn.1673-9140.2022.03.009

First Page

77

Last Page

84

Recommended Citation

LI, Qiang; WU, Shengjun; YI, Yang; and LI, Zewen (2022) "HVDC commutation failure suppression method based on energy storage virtual synchronous machine with multiple points," Journal of Electric Power Science and Technology: Vol. 37: Iss. 3, Article 9.
DOI: 10.19781/j.issn.1673-9140.2022.03.009
Available at: https://jepst.researchcommons.org/journal/vol37/iss3/9