Proving a concept of flexible under-frequency load shedding with hardware-in-the-loop testing

Denis Sodin (Avtor), Rajne Ilievska (Avtor), Andrej Čampa (Avtor), Miha Smolnikar (Avtor), Urban Rudež (Avtor)

Povzetek

It is widely recognized that in the transition from conventional electrical power systems (EPSs) towards smart grids, electrical voltage frequency will be greatly affected. This is why this research is extremely valuable, especially since rate-of-change-of-frequency (RoCoF) is often considered as a potential means of resolving newly arisen problems, but is often challenged in practice due to the noise and its oscillating character. In this paper, the authors further developed and tested one of the new technologies related to under-frequency load shedding (UFLS) protection. Since the basic idea was to enhance the selected technology’s readiness level, a hardware-in-the-loop (HIL) setup with an RTDS was assembled. The under-frequency technology was implemented in an intelligent electronic device (IED) and included in the HIL setup. The IED acted as one of several protection devices, representing a last-resort system protection scheme. All main contributions of this research deal with using RoCoF in an innovative UFLS scheme under test: (i) appropriate selection and parameterization of RoCoF filtering techniques does not worsen under-frequency load shedding during fast-occurring events, (ii) locally measured RoCoF can be effectively used for bringing a high level of flexibility to a system-wide scheme, and (iii) diversity of relays and RoCoF-measuring techniques is an advantage, not a drawback.

Ključne besede

podfrekvenčno razbremenjevanje;pametne elektronske naprave;potrditev koncepta;preizkušanje v zaprti zanki;simulator za dinamičlne izračune v realnem času;rezerva;under-frequency load shedding;intelligent electronic device;proof of concept;hardware-in-the-loop testing;real-time digital simulator;frequency stability margin;

Podatki

Jezik:	Angleški jezik
Leto izida:	2020
Tipologija:	1.01 - Izvirni znanstveni članek
Organizacija:	UL FE - Fakulteta za elektrotehniko
UDK:	537
COBISS:	24709891
ISSN:	1996-1073
Št. ogledov:	164
Št. prenosov:	64
Ocena:	0 (0 glasov)
Metapodatki:

Ostali podatki

Sekundarni jezik:	Slovenski jezik
Sekundarne ključne besede:	podfrekvenčno razbremenjevanje;pametne elektronske naprave;potrditev koncepta;preizkušanje v zaprti zanki;simulator za dinamičlne izračune v realnem času;rezerva;
Vrsta dela (COBISS):	Članek v reviji
Strani:	str. 1-17
Letnik:	ǂno. ǂ14
Zvezek:	3607
Čas izdaje:	2020
DOI:	10.3390/en13143607
ID:	14101871