TITLE:
A Novel Approach for a Two Area Load Frequency Control in a Competitive Electricity Market Adopting Unscheduled Interchange Price
AUTHORS:
Murugesan Bhavani, Kamatchi Selvi, Ravi Durga
KEYWORDS:
Deregulated Electricity Market, Bilateral Contract, Unscheduled Interchange, Contract
JOURNAL NAME:
Circuits and Systems,
Vol.7 No.7,
May
30,
2016
ABSTRACT: This paper proposes a
novel price based load frequency control scheme for a two area system, using an
Unscheduled Interchange (UI) price signal, which is ideal and suitable for
electricity market. The Government of India has introduced Availability Based
Tariff (ABT) structure with an intention of ensuring grid security and to
regulate grid indiscipline through Central Electricity Regulatory Commission
Regulation. After the introduction of this regulation, the over or under
injection by the generating companies (GENCOs) during off peak or peak hours
are demoralized and the frequency is maintained at the nominal value. In this
paper, the GENCOs instead of reacting to this price signal manually, an
automated mode of frequency control is deployed in each area using UI price
signal to achieve fast response to load change. The Distribution Company
(DISCO) Participation Matrix (DPM) has also been employed in this work to
relate the scenario under deregulation of electricity market. The proposed scheme
has been verified for different cases by simulating it on a two area system,
each having four GENCOs and one DISCO in MATLAB/SIMULINK environment. From the
results, it is clearly observed that if the proposed method is employed by all
GENCOs, it will certainly enhance the control of system frequency and at the
same time throw down the UI liability of market participants. It also ensures
that the GENCOs and DISCOs strictly adhere to the bilateral contract following
the DISCO participation matrix.