An intelligent current limiter and Zero Active Power Injection algorithm for microgrid voltage support

Author

Rowe, C.N. ; Summersz, T.J. ; Betz, R.E. ; Cornforth, David J.

Author_Institution

Sch. of Electr. Eng. & Comput. Sci., Univ. of Newcastle, Newcastle, NSW, Australia

fYear

2011

fDate

5-8 Dec. 2011

Firstpage

770

Lastpage

775

Abstract

This paper presents an ancillary control scheme to be used by a generic Distributed Generator (DG) for voltage support. It consists of an intelligent current limiter coupled with a Zero Active Power Injection (ZAPI) algorithm. The ZAPI algorithm can ensure voltage support without effecting the nominal real power output of the distributed generator. The intelligent current limiter ensures that the current demanded by the voltage support scheme does not effect the angle or magnitude of currents associated with DG real power injection. The control scheme is able to be utilised by parallel inverters as it is based on open loop current control and direct power flow solutions. SABER^® simulations are provided to show the operation of the control scheme for an individual inverter and two parallel inverters whilst grid connected.

Keywords

current limiters; distributed power generation; electric current control; open loop systems; ancillary control scheme; distributed generator; intelligent current limiter; microgrid voltage support; open loop current control; zero active power injection algorithm; Inverters; Program processors; Distributed Generation; Microgrids;

fLanguage

English

Publisher

ieee

Conference_Titel

Power Electronics and Drive Systems (PEDS), 2011 IEEE Ninth International Conference on

Conference_Location

Singapore

ISSN

2164-5256

Print_ISBN

978-1-61284-999-7

Electronic_ISBN

2164-5256

Type

conf

DOI

10.1109/PEDS.2011.6147340

Filename

6147340