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.
Highlights
After the deregulation of electricity market, the vertical integrated utility has been transformed to novel and divergent entities
All the Generation Companies (GENCOs) and Distribution Company (DISCO) in various areas can sign the contract for power transaction and transfer from any GENCO to any DISCO which is known as bilateral transaction [2]
The load variations of the DISCOs are met by the GENCOs in both the areas based on the bilateral contract executed between them
Summary
After the deregulation of electricity market, the vertical integrated utility has been transformed to novel and divergent entities. During pre-ABT periods, the generators were not paid incentives for producing extra power under peak load conditions, and at the same time, the generators enjoyed some financial advantages without reducing the generation according to the demand during off-peak hours This will affect the regulation in grid discipline. These drawbacks are overcome by the introduction of Availability Based Tariff This acts as a potential way to resolve the problem of regulating grid frequency automatically while introducing the deregulated scenario simultaneously. In this work an attempt has been made to incorporate the UI mechanism for a two area system, in such a way that the tie-line power flow is regulated, based on the bilateral contracts paving the way for elimination of congestion taking place in deregulated electricity market. The rest of the paper is structured as follows: Section 2 discusses deregulated electricity market and a brief insight into Availability Based Tariff; Section 3 explains the implementation of proposed work with suitable block diagrams; Section 4 discusses the note-worthy results; and Section 5 gives the imperative conclusions from this work
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
