Imperial College London
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Professor Tim Green, FREng

Faculty of Engineering, Department of Electrical and Electronic Engineering

Academic Leader for Sustainability, Professor
 
 
 
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Contact

 

+44 (0)20 7594 6171t.green Website CV

 
 
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Location

 

1107EElectrical EngineeringSouth Kensington Campus

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Summary

 

Publications

Citation

BibTex format

@article{Mian:2021:10.1109/TPWRD.2020.3029312,
author = {Mian, S and Judge, P and Junyent, Ferre A and Green, T},
doi = {10.1109/TPWRD.2020.3029312},
journal = {IEEE Transactions on Power Delivery},
pages = {2893--2903},
title = {A delta-connected Modular Multilevel STATCOM with partially-rated energy storage for provision of ancillary services},
url = {http://dx.doi.org/10.1109/TPWRD.2020.3029312},
volume = {36},
year = {2021}
}
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RIS format (EndNote, RefMan)

TY  - JOUR
AB  - This paper proposes a delta-connected Modular Multilevel STATCOM with partially rated storage (PRS-STATCOM), capable of providing both reactive and active power support. The purpose is to provide short-term energy storage enabled grid support services such as inertial and frequency response, either alongside or temporarily instead of standard STATCOM voltage support. The topology proposed here contains two types of sub-modules (SM) in each phase-leg: standard sub-modules (STD-SMs) and energy storage element sub-modules (ESE-SMs) with a dc-dc interface converter between the SM capacitor and the ESE. A control structure has been developed that allows energy transfer between the SM capacitor and the ESE resulting in active power exchange between the converter and the grid. Injecting 3rd harmonic current into the converter waveforms can be used to increase the amount of power that can be extracted from the ESE-SMs and so reduce the required ESE-SMs fraction in each phase-leg. Simulation results demonstrate that for three selected active power ratings, 1 up, 2/3 pu, & 1/3 pu, the fraction of SMs that need be converted to ESE-SMs are only 69%, 59% & 38%. Thus, the proposed topology is effective in adding real power capability to a STATCOM without a large increase in equipment cost.
AU  - Mian,S
AU  - Judge,P
AU  - Junyent,Ferre A
AU  - Green,T
DO  - 10.1109/TPWRD.2020.3029312
EP  - 2903
PY  - 2021///
SN  - 0885-8977
SP  - 2893
TI  - A delta-connected Modular Multilevel STATCOM with partially-rated energy storage for provision of ancillary services
T2  - IEEE Transactions on Power Delivery
UR  - http://dx.doi.org/10.1109/TPWRD.2020.3029312
UR  - https://ieeexplore.ieee.org/document/9216022
UR  - http://hdl.handle.net/10044/1/84481
VL  - 36
ER  -
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