A novel operating strategy for unscheduled interchange price-based automatic generation control
by V. Murali; K. Rama Sudha
International Journal of Energy Technology and Policy (IJETP), Vol. 15, No. 2/3, 2019

Abstract: In order to maintain grid discipline and bring about more responsibility and accountability among the participants in the system, the availability-based tariff (ABT) mechanism was introduced in Indian power sector. Though there is a considerable improvement, it is further required to maintain the system with greater frequency stability and reduced fuel cost for power generation. This paper presents a control scheme for unscheduled interchange (UI) price-based automatic generation control (AGC) to nullify the deviations in frequency following a disturbance in the system. This scheme gives the system operator flexibility to schedule the generations in a desired manner on various units by which the merit order dispatch can be maintained. The proposed scheme is tested on a single area system with four generating units and is compared with an existing system and found effective. The results indicate that the frequency is maintained at normal value following a disturbance and the increased load can be shared among the generators in a desired manner.

Online publication date: Mon, 04-Mar-2019

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